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WO2018147492A1 - Concasseur hydraulique, système de surveillance de fluide tampon et procédé de surveillance de fluide tampon - Google Patents

Concasseur hydraulique, système de surveillance de fluide tampon et procédé de surveillance de fluide tampon Download PDF

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Publication number
WO2018147492A1
WO2018147492A1 PCT/KR2017/001777 KR2017001777W WO2018147492A1 WO 2018147492 A1 WO2018147492 A1 WO 2018147492A1 KR 2017001777 W KR2017001777 W KR 2017001777W WO 2018147492 A1 WO2018147492 A1 WO 2018147492A1
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WO
WIPO (PCT)
Prior art keywords
pressure
piston
buffer
buffer fluid
hydraulic
Prior art date
Application number
PCT/KR2017/001777
Other languages
English (en)
Korean (ko)
Inventor
이원해
주진무
Original Assignee
대모 엔지니어링 주식회사
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Filing date
Publication date
Application filed by 대모 엔지니어링 주식회사 filed Critical 대모 엔지니어링 주식회사
Publication of WO2018147492A1 publication Critical patent/WO2018147492A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
    • E02F5/305—Arrangements for breaking-up hard ground
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/24—Safety devices, e.g. for preventing overload
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/26—Indicating devices
    • E02F9/267—Diagnosing or detecting failure of vehicles

Definitions

  • the present invention relates to a hydraulic breaker, a buffer fluid monitoring system and a buffer fluid monitoring method, and more particularly to a hydraulic breaker, a buffer fluid monitoring system and a buffer fluid monitoring method for monitoring the leakage of the buffer fluid buffering the movement of the piston. will be.
  • a breaker is a device used to crush a rock by hitting a chisel in contact with an object through a reciprocating motion of a piston, and a hydraulic attachment form that is mounted on a heavy equipment vehicle such as an excavator is mainly used in a large construction site. .
  • the conventional breaker has a long stroke mode that increases the stroke distance of the piston so that the impact force is strengthened for hard rock crushing according to the operator's operation, and the shot speed is improved even when sacrificing some impact force for soft rock crushing. It is configured to change the short stroke mode.
  • the breaker is provided with a buffer using a buffer fluid to buffer the movement of the piston reciprocating on the cylinder.
  • Buffer fluid is leaking due to scratches and cracks generated in the piston or cylinder.
  • the present invention is to solve the above problems, it detects the leakage of the buffer fluid, hydraulic breaker, buffer fluid monitoring system to inform the user or control the movement of the piston according to a predetermined condition when the buffer fluid leaks And buffer fluid monitoring methods.
  • a cylinder having a plurality of hydraulic ports, a piston reciprocating in the cylinder by the hydraulic pressure of the hydraulic fluid introduced or discharged through the hydraulic port, the movement of the piston using a buffer fluid
  • a buffer for buffering a pressure sensor for detecting pressure information on the buffer when the piston is moved on the buffer, and a check whether the buffer fluid leaks from the buffer based on the detected pressure information, and the buffer fluid leaks. If it is determined that the hydraulic breaker including a transmission module for outputting the pressure information to the controller for performing a warning operation may be provided.
  • a buffer fluid monitoring system for monitoring a buffer fluid leakage of a hydraulic breaker having a buffer buffer which is installed on the inner surface of the buffer part, and detects pressure information on the buffer part when the piston is moved on the buffer part.
  • a buffer fluid monitoring system including a controller for determining that a leak of the buffer fluid has occurred and performing a warning operation may be provided.
  • the chisel hitting the object in accordance with the reciprocating motion of the piston in the cylinder, the pressure sensor provided on the inner surface of the buffer for buffering the movement of the piston using a buffer fluid is the piston Detecting pressure information on the buffer unit when moving on the buffer unit, and determining that leakage of the buffer fluid has occurred and performing a warning operation when a controller satisfies a predetermined condition based on the detected pressure information.
  • a buffer fluid monitoring method may be provided.
  • the buffer fluid monitoring system and the buffer fluid monitoring method according to an embodiment of the present invention, to detect the leakage of the buffer fluid, if the buffer fluid leaks to inform the user according to a predetermined condition or the piston By controlling the movement of the breaker can be prevented.
  • FIG. 1 is a schematic diagram of construction equipment including a hydraulic breaker according to an embodiment of the present invention.
  • FIG. 2 is a schematic view of a hydraulic breaker according to an embodiment of the present invention.
  • FIG. 3 is an exploded perspective view of a hydraulic breaker according to an embodiment of the present invention.
  • FIG. 4 is a circuit diagram of a hydraulic breaker according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram showing an installation position of a pressure sensor according to an embodiment of the present invention.
  • FIG. 6 and 7 illustrate characteristics of pressure information detected by a pressure sensor according to an exemplary embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a buffer fluid monitoring system according to an embodiment of the present invention.
  • a cylinder having a plurality of hydraulic ports; A piston reciprocating in the cylinder by the hydraulic pressure of the hydraulic oil flowing in or out through the hydraulic port; A buffer for buffering the movement of the piston using a buffer fluid; A pressure sensor for sensing pressure information on the buffer when the piston is moved on the buffer; And a transmission module for determining whether the buffer fluid is leaked based on the detected pressure information, and outputting the pressure information to a controller that performs a warning operation when it is determined that the buffer fluid is leaked.
  • the pressure sensor and the transmission module may be provided on the inner surface of the shock absorbing portion is provided with a hydraulic breaker which is disconnected from the outside of the shock absorbing portion.
  • the hydraulic breaker may further include a position sensor installed on an inner surface of the shock absorber and configured to sense position information of the piston moving on the shock absorber.
  • the hydraulic breaker may be provided further comprising: a power charging unit which is installed on the inner surface of the buffer unit, the power charging unit can be wirelessly charged to supply power to the pressure sensor, the transmission module or the position sensor.
  • the movement of the piston using a cylinder having a plurality of hydraulic ports, the piston and the buffer fluid reciprocating in the cylinder by the hydraulic pressure of the hydraulic fluid flowing in or out through the hydraulic port A buffer fluid monitoring system for monitoring a buffer fluid leak of a hydraulic breaker having a shock absorber for cushioning the pressure, which is installed on the inner surface of the shock absorber and pressure information on the shock absorber when the piston is moved on the shock absorber.
  • a pressure sensor for detecting the; And a controller configured to determine that a leakage of the buffer fluid has occurred and perform a warning operation when the predetermined condition is satisfied based on the detected pressure information.
  • the buffer fluid monitoring system may include a buffer fluid monitoring system.
  • the predetermined condition may be a buffer fluid monitoring system in which the maximum pressure of the pressure information is equal to or less than a predetermined reference pressure.
  • the predetermined condition may be a buffer fluid monitoring system in which the frequency in which the highest pressure of the pressure information is equal to or less than the reference pressure in a reciprocating motion state of the piston is equal to or greater than a predetermined reference frequency.
  • the predetermined condition may be a buffer fluid monitoring system in which the pressure change value of the pressure information is equal to or greater than a predetermined reference pressure change value.
  • the predetermined condition may be a buffer fluid monitoring system in which the frequency of the pressure change value of the pressure information is greater than or equal to the reference pressure change value in a reciprocating state of the piston is equal to or greater than a predetermined reference frequency.
  • the apparatus may further include a position sensor installed on an inner surface of the shock absorber and configured to sense position information of the piston that is moved on the shock absorber.
  • the predetermined condition may include a predetermined position at which the piston is located based on the shock absorber.
  • a buffer fluid monitoring system may be provided in which the pressure of the pressure information at the position is equal to or less than a predetermined reference pressure.
  • the pressure of the pressure information is the piston at a predetermined position between the uppermost point of the upper end of the piston defined as the upper end of the piston reciprocates in the shock absorbing portion and the lowermost point of the shock absorbing portion.
  • a buffer fluid monitoring system can be provided which is the pressure at which the top of the pump advances.
  • the apparatus may further include a position sensor installed on an inner surface of the shock absorber and configured to sense position information of the piston that is moved on the shock absorber.
  • the predetermined condition may include a predetermined position at which the piston is located based on the shock absorber.
  • a buffer fluid monitoring system may be provided in which the pressure change value of the pressure information at the position is equal to or greater than a predetermined reference pressure change value.
  • the pressure change value of the pressure information is a predetermined position between the uppermost point of the upper end of the piston and the lowermost point of the shock absorbing part, which is defined as the upper end of the piston reciprocates in the shock absorbing part,
  • a buffer fluid monitoring system may be provided which is a pressure change value when the upper end of the piston is advanced.
  • the controller may further include an output module configured to output an image or an audio signal, wherein the controller may provide a buffer fluid monitoring system that outputs a warning message through the output module when it is determined that leakage of the buffer fluid occurs.
  • controller may be provided with a buffer fluid monitoring system for stopping the reciprocating motion of the piston when it is determined that the leakage of the buffer fluid occurs.
  • the hydraulic breaker connects a hydraulic source and the rear chamber of the cylinder for the forward movement of the piston or selectively blocks the flow of the hydraulic oil and a control valve for discharging the hydraulic oil from the rear chamber of the cylinder.
  • a shutoff valve The controller may be provided with a buffer fluid monitoring system for controlling the shutoff valve so that the shutoff valve blocks the flow of the working oil when it is determined that the leakage of the buffer fluid occurs.
  • And-the shutoff valve selectively blocks the flow of the hydraulic oil directed to the control valve-the controller is configured to block the flow of the shutoff valve so that the shutoff valve shuts off the flow of the hydraulic fluid when it is determined that leakage of the buffer fluid has occurred.
  • a buffer fluid monitoring system may be provided that controls the valve.
  • the controller may output a warning message through the output module when the maximum pressure of the pressure information is less than or equal to the first pressure, and when the maximum pressure of the pressure information is less than or equal to the second pressure less than the first pressure,
  • a buffer fluid monitoring system may be provided that stops the reciprocating motion.
  • the charging unit for filling the buffer fluid on the buffer portion; And a filling valve for selectively implementing and blocking a fluid connection between the filling part and the buffer part, wherein the controller stops the reciprocating motion of the piston, and then the filling part has a buffer fluid on the buffer part.
  • a buffer for controlling the filling valve so as to control the filling valve to block filling of the buffer fluid on the buffer part when the pressure of the pressure information reaches a predetermined buffer pressure due to the filling of the buffer fluid. Fluid monitoring systems may be provided.
  • the chisel hitting the object in accordance with the reciprocating motion of the piston in the cylinder Detecting, by a pressure sensor provided on an inner surface of the buffer part for buffering the movement of the piston using a buffer fluid, pressure information on the buffer part when the piston is moved on the buffer part; And determining that a leakage of the buffer fluid has occurred and performing a warning operation when the controller satisfies a predetermined condition based on the sensed pressure information.
  • the buffer fluid monitoring method may include providing a buffer fluid.
  • FIG. 1 is a schematic diagram of construction equipment including a hydraulic breaker according to an embodiment of the present invention
  • Figure 2 is a schematic diagram of a hydraulic breaker according to an embodiment of the present invention
  • Figure 3 is according to an embodiment of the present invention An exploded perspective view of a hydraulic breaker.
  • Figure 4 is a circuit diagram of a hydraulic breaker according to an embodiment of the present invention
  • Figure 5 is a schematic diagram showing the installation position of the pressure sensor according to an embodiment of the present invention.
  • FIG. 6 and 7 are diagrams illustrating pressure information characteristics sensed by a pressure sensor according to an embodiment of the present invention
  • FIG. 8 is a schematic configuration diagram of a buffer fluid monitoring system according to an embodiment of the present invention.
  • the longitudinal direction may mean an up and down direction based on FIGS. 2, 4 and 5.
  • the construction equipment 100 is equipment for performing a hitting operation on an object.
  • Construction equipment 100 for the blow operation is mainly implemented in the form that the hydraulic breaker 1000 is mounted as an attachment to a heavy-duty vehicle such as an excavator.
  • the hydraulic breaker 1000 is a device that performs an operation of hitting an object.
  • hydraulic breaker 1000 in the present invention is not limited to the above-described examples, it should be understood as a concept encompassing all other types of hitting device that performs a function of hitting the object in addition to the hydraulic breaker.
  • the hydraulic breaker 1000 is generally, but not necessarily, an attachment type mounted to a heavy-duty vehicle, ie, the carrier 120, and may also exist in an independent form from the carrier 120, such as a form directly handled by an operator.
  • the carrier 120 may be largely divided into a driving body 121 and a rotating body 122.
  • the traveling body 121 is mainly provided in a crawler type or a wheel type, and in some cases, may be a crane type or a truck type.
  • the rotating body 122 is mounted on the traveling body 121 to be rotatable about an axis in a direction perpendicular to the ground.
  • the rotating body 122 is provided with a connecting member 123 such as a boom or an arm.
  • the end of the connection member 123 may be detachably attached to the hydraulic breaker 1000 in the form of an attachment or fastened through the coupler 140.
  • the connecting member 123 is mainly two or more members are fastened in a link manner, connected to the cylinder can be bent or stretched by the expansion and contraction of the cylinder, stretching operation and the like.
  • the connection member 123 may position the hydraulic breaker 1000 attached to the end by the operation on the hit.
  • the carrier 120 may apply hydraulic pressure to the hydraulic breaker 1000 so that the mounted hydraulic breaker 1000 may operate, or in addition, the parts of the carrier 120 including the boom or the arm may be hydraulically applied to the coupler 140, or the like.
  • Hydraulic source 160 for supplying the hydraulic tank 160a for storing the operating oil may be installed.
  • a cabin 124 on which the operator boards is provided on the rotating body 122 so that the user can operate the carrier 120 or the hydraulic breaker 1000 by using a manipulation device such as a handle, a lever, or a button in the cabin 124.
  • a manipulation device such as a handle, a lever, or a button in the cabin 124.
  • FIGS. 2 and 3 a hydraulic breaker 1000 according to an exemplary embodiment of the present invention will be described with reference to FIGS. 2 and 3.
  • the hydraulic breaker 1000 may include a mounting bracket 1200, a main body 1400, and a chisel 1600.
  • the main body 1400 is a site for generating the striking force in the hydraulic breaker 1000, and has a cylinder 1430 and a piston 1440 accommodated in the cylinder 1430 therein for the hydraulic oil applied from the hydraulic source 160.
  • the chisel 1600 is a portion for directly hitting the hitting object, and the lower side of the main body 1400 (the piston 1440 in the following description) moves forward (extension) so that its upper end hits the lower end of the piston 1440. It defines downward, and is arrange
  • the mounting bracket 1200 is coupled to the upper end of the main body 1400, and is configured to connect the carrier 120 and the main body 1400.
  • the main components of the main body 1400 may be the cylinder 1430 and the piston 1440.
  • the piston 1440 is provided in a cylindrical shape
  • the cylinder 1430 may be provided in a hollow cylindrical shape so that the piston 1440 is inserted to reciprocate.
  • the inner surface 1435 of the cylinder is provided with various hydraulic ports 1433, 1434, 1435, and 1436 for supplying hydraulic pressure to the interior of the cylinder 1430 or for discharging the hydraulic pressure from the interior of the cylinder 1430.
  • the piston 1440 includes at least a small diameter portion 1446, a first large diameter portion 1444 positioned above the small diameter portion 1446, and a second large diameter portion 1442 positioned below the small diameter portion 1446. Can be.
  • the piston 1440 acts as a cylinder. It is possible to reciprocate forward and backward within 1430.
  • the front head 1450 and the buffer 1420 may be connected to the lower and upper ends of the cylinder 1430, respectively.
  • the front head 1450 is provided with a chisel pin (not shown) on which the chisel 1600 is placed, and the chisel 1600 is hit by the lower end of the piston 1440 when the piston 1440 is advanced by the chisel pin (not shown). Be placed in the proper position.
  • the front head 1450 includes a dust protector (not shown) for preventing foreign matter from entering the cylinder 1430 when the piston 1440 is reciprocated, or a sound absorbing member (not shown) for reducing the impact sound.
  • a dust protector for preventing foreign matter from entering the cylinder 1430 when the piston 1440 is reciprocated
  • a sound absorbing member (not shown) for reducing the impact sound.
  • the buffer unit 1420 has a buffer fluid chamber S therein, and the buffer fluid chamber S may impart an appropriate damping effect to the piston 1440 as its volume is compressed when the piston 1440 is retracted. have.
  • the buffer unit 1420 may have a buffer fluid injection hole 1402 formed by penetrating one surface of the buffer unit 1420 to fill the buffer fluid S with the buffer fluid chamber S.
  • the buffer fluid may be filled in the buffer fluid chamber S through the buffer fluid inlet 1402.
  • shock absorbing portion 1420 has been described as a configuration connected to the upper end of the cylinder 1430, the present invention is not limited thereto. From the standpoint, the installation location, shape, etc. can be changed in various ways.
  • the hydraulic breaker 1000 may further include a charging unit 1300 for filling the buffer fluid on the buffer unit 1420.
  • the charging unit 1300 may be configured to supply a buffer fluid to the buffer fluid chamber S of the buffer unit 1420.
  • the charging unit 1300 may be installed in the hydraulic breaker 1000, but is not limited thereto and may be installed in the carrier 120.
  • the charging unit 1300 may be installed in a space between the cover unit 1410 surrounding the cylinder 1430 and the cylinder 1430.
  • the hydraulic breaker 1000 may be provided with a filling valve 1310 for selectively implementing and blocking a fluid connection between the charging unit 1300 and the buffer unit 1420.
  • the filling valve 1310 may be installed in a path where the buffer fluid reaches the buffer fluid chamber S from the filling part 1300.
  • the filling valve 1310 may be installed in a path between the filling unit 1300, the buffer fluid inlet 1402, or the buffer fluid inlet 1402 from the filling unit 1300.
  • the buffer fluid cannot be moved from the filling part 1300 to the buffer fluid chamber S.
  • the buffer fluid is removed from the filling part 1300. It may be moved to the buffer fluid chamber (S).
  • the structure or structure of the hydraulic breaker 1000 described above is only one embodiment of the hydraulic breaker 1000 according to the present invention, and the hydraulic breaker 1000 according to the present invention may be similar to the above-described configuration or structure, although somewhat different. It is to be understood that other striking devices having functions are also included.
  • a circuit diagram of the hydraulic breaker 1000 according to the embodiment of the present invention will be described with reference to FIG. 4.
  • a piston 1440 is inserted into the cylinder 1430, and a chisel 1600 is disposed below the piston 1440.
  • the piston 1440 may include the small diameter portion 1446, the first large diameter portion 1444 positioned above the small diameter portion 1446, and the second large diameter portion 1442 positioned below the small diameter portion 1446. have.
  • the outer diameter of the first large diameter portion 1444 and the second large diameter portion 1442 may be substantially the same as the inner diameter of the cylinder 1430, and thus, the lower side and the second large portion of the cylinder 1430 may be disposed inside the cylinder 1430.
  • the front chamber 1431 may be formed between the necks 1442, and the rear chamber 1432 may be formed between the upper side of the cylinder 1430 and the first large diameter part 1444.
  • a reverse port 1433 is formed in the front chamber 1431, and the reverse port 1433 may be connected to the hydraulic source 160 through the reverse line 1433a.
  • hydraulic pressure may be applied to the front chamber 1431 by the hydraulic oil flowing from the hydraulic source 160 through the reverse line 1433a to the reverse port 1433.
  • the hydraulic pressure applied to the front chamber 1431 may act on the stepped surface 1442a of the second large diameter portion 1442, and a reverse force may be applied to the piston 1440.
  • a forward port 1434 is formed in the rear chamber 1432, and the forward port 1434 may be connected to the control valve 1460 through the forward line 1434a.
  • the control valve 1460 may be disposed in either one of the forward position 1460-2 or the reverse position 1460-1, and the forward position 1460-2 may move the forward line 1434a to the hydraulic source 160. ), And the forward line 1434a may be connected to the hydraulic tank 160a in the reverse position 1460-1.
  • the hydraulic pressure applied to the rear chamber 1432 acts on the stepped surface 1444a of the first large diameter portion 1444, and a forward force is applied to the piston 1440.
  • the rear chamber 1432 is connected to the hydraulic tank 160a via the forward line 1434a and the control valve 1460, and the forward position ( The hydraulic oil introduced into the rear chamber 1432 in 1460-2 is discharged to the hydraulic tank 160a.
  • the stepped surface 1444a of the first large diameter portion 1444 has an area larger than the stepped surface 1442a of the second large diameter portion 1442 so that the control valve 1460 is positioned at the forward position 1460-2.
  • the forward force may be greater than the backward force so that the piston 1440 may advance.
  • the reciprocating motion of the piston 1440 can be implemented as the control valve 1460 is disposed in the forward position 1460-2 or the backward position 1460-1.
  • the position control of the control valve 1460 may be hydraulic.
  • control valve 1460 may be a hydraulic valve in which the forward position 1460-2 and the reverse position 1460-1 may be selected according to the input hydraulic signal.
  • Both ends of the control valve 1460 may be provided with a forward action surface 1464 and a reverse action surface 1462 respectively connected to the hydraulic line.
  • the forward action surface 1464 may be connected to the forward control line 1464a branched into the long stroke line 1435a and the short stroke line 1434a.
  • Reverse action surface 1462 may be connected to hydraulic source 160 via reverse control line 1462a.
  • the forward acting surface 1464 has an area larger than the backward acting surface 1462, so that when the hydraulic pressure is applied to both acting surfaces, the control valve 1460 may be disposed at the forward position 1460-2. Accordingly, the piston 1440 may move forward.
  • the control valve 1460 may be disposed from the forward position 1460-2 to the reverse position 1460-1, and thus the piston 1440 may reverse.
  • the long stroke line 1435a is connected to the long stroke port 1435 formed in the cylinder 1430.
  • the long stroke port 1435 may be formed between the forward port 1434 and the reverse port 1433 of the cylinder 1430 to be connected or disconnected from the front chamber 1431 according to the position of the piston 1440.
  • the long stroke port 1435 has a front chamber 1431 when the piston 1440 is advanced so that the second large diameter portion 1442 is on the long stroke port 1435 or located below the long stroke port 1435. The connection with is cut off.
  • the long stroke port 1435 is connected to the front chamber 1431 when the piston 1440 is backward and the second large diameter portion 1442 is positioned above the long stroke port 1435.
  • the hydraulic pressure from the hydraulic source 160 is reverse line 1433a, the reverse port 1433, the front chamber 1431, the long stroke port 1435.
  • the control valve 1460 may be disposed at the forward position 1460-2 by being sequentially applied to the forward action surface 1464 through the long stroke line 1435a and the forward control line 1464a.
  • the short stroke line 1436a may be connected to the short stroke port 1434 formed in the cylinder 1430.
  • the short stroke port 1436 is formed between the forward port 1434 and the reverse port 1433 of the cylinder 1430 to be connected to or disconnected from the front chamber 1431 according to the position of the piston 1440, and the long stroke It may be formed at a position closer to the reverse port 1433 than to the port 1435.
  • the short stroke port 1434 is in contact with the front chamber 1431 when the piston 1440 is advanced so that the second large diameter portion 1442 is on the short stroke port 1434 or located ahead of the short stroke port 1434.
  • the connection is cut off.
  • the short stroke port 1434 is connected to the front chamber 1431 when the piston 1440 is backward and the second large diameter portion 1442 is located behind the short stroke port 1434.
  • a shift valve 1470 may be provided on the short stroke line 1436a to control a short circuit of the short stroke line 1436a.
  • the shift valve 1470 may be selectively disposed at any one of the long stroke position 1470-1 and the short stroke position 1470-2, and the short stroke line 1436a at the long stroke position 1470-1. ) And the short stroke line 1434a is connected at the short stroke position 1470-2.
  • the long stroke mode and the short stroke mode of the piston 1440 may be determined by the shift valve 1470.
  • the shift valve 1470 is disposed in the short stroke position 1470-2 and the second large diameter portion 1442 is located behind the short stroke port 1434 such that the short stroke port 1434 and the front chamber 1431 are positioned.
  • Hydraulic fluid is connected to the hydraulic source 160, the reverse line 1433a, the reverse port 1433, the front chamber 1431, the short stroke port 1434, the shift valve 1470, and the forward action surface 1464. Can be reached sequentially.
  • the piston 1440 may selectively perform reciprocating motion in the long stroke mode and the short stroke mode according to the position of the shift valve 1470.
  • the shift valve 1470 may automatically switch between the long stroke position 1470-1 and the short stroke position 1470-2 by the controller 180, and the long stroke position may be selected by the user. Switching between 1470-1 and the short stroke position 1470-2 may be performed.
  • the hydraulic breaker 1000 may further include a shutoff valve 1480 for selectively blocking the flow of the hydraulic oil.
  • the shutoff valve 1480 may be installed in a line through which the hydraulic oil is moved, and may selectively allow the flow of the hydraulic oil, or block the flow of the hydraulic oil.
  • the shutoff valve 1480 may allow the flow of the hydraulic oil in the connecting position (1480-2), and may block the flow of the hydraulic oil in the blocking position (1480-1).
  • shutoff valve 1480 is installed on the forward control line 1464a and moves forward from the long stroke port 1435 to the forward action surface 1464 from the hydraulic oil or the short stroke port 1434 to the forward action surface 1464. Allows the flow of hydraulic fluid to be transported to and may be blocked.
  • shutoff valve 1480 is disposed at the shutoff position 1480-1 to block the flow of the hydraulic oil, no hydraulic pressure is applied to the forward action surface 1464, so that the control valve 1460 is moved backward. Cannot be converted from 1) to the advance position 1460-2.
  • hydraulic fluid is not supplied from the hydraulic source 160 to the rear chamber 1432 by the control valve 1460 in the reverse position 1460-1, so that the reciprocating motion of the piston 1440 may be stopped.
  • the installation position of the shutoff valve 1480 is not limited to the above-mentioned position, but may be installed on the reverse line 1433a or may also be installed on the advance line 1434a.
  • shutoff valve 1480 may be installed in a line through which hydraulic oil is discharged from the hydraulic source 160.
  • the shutoff valve 1480 blocks the flow of the hydraulic oil
  • the hydraulic oil supply from the hydraulic source 160 to the cylinder 1430 may be interrupted.
  • the buffer fluid filled on the buffer fluid chamber S may leak from the buffer fluid chamber S through a gap between the buffer fluid inlet 1402 or the buffer unit 1420 and the piston 1440.
  • the piston 1440 may not be able to properly dampen the movement ascending on the cylinder 1430, and the piston 1440 may be damaged.
  • the piston 1440 may not have sufficient acceleration due to the pressure of the buffer fluid.
  • the hydraulic breaker 1000 may be provided with a pressure sensor 150 for detecting pressure information on the buffer fluid on the buffer 1420.
  • the hydraulic breaker 1000 may be further provided with a transmission module (not shown).
  • the transmission module may be configured to output pressure information to the controller 180.
  • the transmission module may be configured to receive the pressure information sensed by the pressure sensor 150 from the pressure sensor 150 and transmit the received pressure information to the controller 180.
  • the transmission module may output pressure information from the pressure sensor 150 to the controller 180 through wired communication, or output pressure information from the pressure sensor 150 to the controller 180 through wireless communication.
  • wireless communication of the transmission module may include Bluetooth Low Energy (BTLE) or Zigbee. Since communication between the pressure sensor 150 and the controller 180 does not require a high bandwidth, low power communication such as BTLE or direct rain may be desirable.
  • BTLE Bluetooth Low Energy
  • Zigbee Zigbee
  • the communication method between the controller 180 and the pressure sensor 150 is not necessarily limited thereto.
  • the controller 180 may determine whether the buffer fluid leaks from the buffer 1420 based on the detected pressure information.
  • the controller 180 may perform a warning operation when it is determined that the buffer fluid leaks.
  • the controller 180 is an electronic circuit that processes and calculates various electronic signals.
  • the controller 180 receives pressure information or a signal from the pressure sensor 150, calculates and processes information / data, and uses hydraulic pressure as an electronic signal. It is possible to control the breaker 1000 and other configurations of construction equipment.
  • the controller 180 is typically located on the carrier 120, but may also be located on the hydraulic breaker 1000.
  • controller 180 does not necessarily need to be implemented as a single object.
  • controller 180 may be implemented as a plurality of controllers 180 that can communicate with each other.
  • the controller 180 may be distributedly disposed such that a part thereof is installed on the hydraulic breaker 1000 side and the other part is installed on the carrier 120, and the controller 180 is wirelessly distributed between the distributed controllers 180. You can do that by collaborating by performing wired communication.
  • controllers 180 when a plurality of controllers 180 are distributed, some of them simply transmit signals or information to a slave type, and others receive various signals or information to a master type to process / operate and command / It may also take the form of performing control.
  • the controller 180 will be described in more detail when describing the scratch monitoring system below.
  • the pressure sensor 150 may be installed on the buffer unit 1420.
  • the pressure sensor 150 may be installed on the inner surface 1421 of the shock absorbing portion 1420.
  • the pressure sensor 150 may detect information about the pressure on the buffer fluid chamber S.
  • the transmission module may be installed on the inner surface 1421 of the buffer unit 1420.
  • the buffer unit 1420 may be further provided with a position sensor 200 for detecting the position information for the vertical movement of the piston 1440.
  • the position sensor 200 may be installed on the inner surface 1421 of the buffer 1420.
  • the buffer unit 1420 may form a buffer fluid chamber S having a sufficient volume between the pistons 1440, and the pressure sensor 150, the position sensor 200, and the transmission module may buffer the buffer fluid of the buffer unit 1420. Is installed on the chamber (S), it may be installed in a position not in contact with the piston 1440 reciprocating on the buffer fluid chamber (S).
  • the pressure sensor 150, the position sensor 200, and the transmission module are installed on the inner surface 1421 of the shock absorbing portion 1420, the pressure sensor 150, the position sensor 200, and the transmission module may be disconnected from the outside of the shock absorbing portion 1420.
  • the pressure sensor 150, the position sensor 200 and the entire transmission module may be installed on the inner surface 1421 of the shock absorbing portion 1420, that is, on the shock absorbing fluid chamber (S). As a result, it may be disconnected from the outside of the buffer unit 1420.
  • the transmitting module may transmit pressure information, location information, etc. to the controller 180 through wireless communication with the controller 180.
  • the inner surface 1421 of the buffer unit 1420 has a power charging unit 1300 (not shown) that can be charged wirelessly to supply power to the pressure sensor 150, the transmission module or the position sensor 200. More can be installed.
  • the power charger 1300 may supply power required for each of the pressure sensor 150, the transmission module, or the position sensor 200 in a wireless or wired manner, and a power charger (not shown) installed outside the charging unit 1300. Can be powered in a wireless manner.
  • the shock absorbing portion 1420 does not need to form a separate opening for positioning and driving the pressure sensor 150, the transmission module or the position sensor 200, and the pressure sensor 150, the transmission module or the position sensor. 200 is disconnected from the outside of the buffer unit 1420, it is possible to more effectively implement the prevention of leakage of the buffer fluid on the buffer fluid chamber (S).
  • the buffer fluid monitoring system that can monitor the leakage of the buffer fluid using the pressure sensor 150 and the controller 180 will be described in more detail.
  • the buffer fluid monitoring system is a system for implementing monitoring of the leakage of the buffer fluid filled on the buffer unit 1420 of the hydraulic breaker 1000 described above.
  • the buffer fluid monitoring system may monitor the occurrence of the buffer fluid leak using the pressure information sensed by the pressure sensor 150 described above.
  • a warning operation may be performed in the event of a leakage of buffer fluid as a result of monitoring.
  • the buffer fluid monitoring system may include a pressure sensor 150 and the controller 180, the controller 180 is buffered when the predetermined condition is satisfied based on the pressure information sensed from the pressure sensor 150 A leak of fluid may be determined and a warning action may be performed.
  • the predetermined condition may be a reference condition for determining whether the buffer fluid on the buffer unit 1420 has leaked.
  • the controller 180 may determine that a leakage of the buffer fluid occurs when the data calculated / converted based on the pressure information or the pressure information detected from the pressure sensor 150 satisfies a predetermined condition. If the specified conditions are not met, it may be determined that no leakage of the buffer fluid occurs.
  • the predetermined condition may be set by the user or may be set based on pressure information obtained from the pressure sensor 150 in a normal state in which the buffer fluid does not leak and / or in a state in which the buffer fluid leaks.
  • the buffer fluid leakage monitoring system may further include an output module 190 for outputting an image or audio.
  • the output module 190 may be implemented as, for example, an image output module 190 that mainly outputs an image or an audio output module 190 that outputs an audio.
  • various output devices for transmitting information to the user may be adopted as the output module 190.
  • the output module 190 may directly output an image or an audio to a user, and may be configured to include a USB port for transmitting an image / audio signal to another device that directly outputs an image or an audio to a user.
  • the output module 190 may be a component capable of outputting an image or an audio to output a warning message for occurrence of a buffer fluid leakage.
  • the output module 190 may be installed in the breaker 1000 or may be installed in the carrier 120.
  • the controller 180 may control the output module 190 to output a warning message about occurrence of a buffer fluid leakage to the user through the output module 190.
  • the controller 180 and the output module 190 may enable wired communication or wireless communication.
  • the predetermined condition may be a condition in which the maximum pressure P4 of the pressure information is equal to or less than the predetermined reference pressures P1 and P2.
  • the maximum pressure P4 of the pressure information may mean a pressure P4 having the highest value among the pressures of the buffer fluid chamber S that is changed according to the reciprocating motion of the piston 1440.
  • the controller 180 may determine that leakage of the buffer fluid has occurred.
  • the predetermined reference pressures P1 and P2 may be set by the user and are based on pressure information obtained from the pressure sensor 150 in a normal state in which the buffer fluid does not leak and / or in a state in which the buffer fluid leaks. It may be set.
  • the predetermined condition may be a condition in which the minimum pressure P5 of the pressure information is equal to or less than the predetermined reference pressure P3.
  • the minimum pressure P5 of the pressure information may mean a pressure P5 having a minimum value among the pressures of the buffer fluid chamber S that are changed according to the reciprocating motion of the piston 1440.
  • the controller ( 180 may determine that the leakage of the buffer fluid has occurred.
  • the predetermined condition may be a condition in which the frequency at which the maximum pressure P4 of the pressure information is equal to or less than the predetermined reference pressures P1 and P2 in the reciprocating motion of the piston 1440 is equal to or greater than the predetermined reference frequency.
  • the pressure change of the pressure information may be repeated according to the reciprocating motion of the piston 1440.
  • the pressure of the pressure information may be lowered, and the piston 1440 moves backward in the upward direction on the cylinder 1430.
  • the pressure of the pressure information may be increased, and the pressure change of the pressure information may be repeated by the reciprocating motion of the piston 1440.
  • the highest pressure P4 of the pressure information may be repeated three times and sensed.
  • the controller 180 may determine that the buffer fluid is leaked.
  • the controller 180 buffers the fluid. Can be judged to have leaked.
  • the predetermined condition may be a condition in which the frequency at which the minimum pressure P5 of the pressure information is less than or equal to the predetermined reference pressure P3 in the reciprocating motion of the piston 1440 is equal to or greater than the predetermined reference frequency.
  • the predetermined reference frequency may be set by the user, or may be set based on pressure information obtained from the pressure sensor 150 in a normal state in which the buffer fluid does not leak and / or in a state in which the buffer fluid leaks.
  • the predetermined condition may be a condition in which the pressure change value ⁇ P of the pressure information is equal to or greater than a predetermined reference pressure change value.
  • the pressure change value ⁇ P of the buffer fluid chamber S may increase due to the vertical movement of the piston 1440.
  • the controller 180 may determine whether the buffer fluid leaks.
  • the pressure change value ⁇ P may be a difference between the highest pressure P4 and the minimum pressure P5.
  • the controller 180 may buffer the fluid. It can be judged that a leak has occurred.
  • the predetermined reference pressure change value may be set by the user and may be set based on pressure information obtained from the pressure sensor 150 in a normal state in which the buffer fluid does not leak and / or in a state in which the buffer fluid leaks. have.
  • the predetermined condition may be a condition in which the frequency of the pressure change value ⁇ P of the pressure information is equal to or greater than the predetermined reference pressure change value in the reciprocating state of the piston 1440.
  • the pressure change of the pressure information may be repeated according to the reciprocating motion of the piston 1440.
  • the controller ( 180 may determine that the buffer fluid has leaked.
  • the predetermined condition may be a condition that the pressure of the pressure information at a predetermined position where the piston 1440 is located with respect to the buffer unit 1420 is equal to or less than the predetermined reference pressures P1 and P2.
  • the pressure of the pressure information used as a basis for determining whether the buffer fluid is leaked may be the pressure when the piston 1440 is located at a predetermined position on the buffer unit 1420.
  • the pressure of the pressure information may be a predetermined pressure between the highest pressure P4 and the minimum pressure P5.
  • the upper end of the piston 1440 may reciprocate on the buffer fluid chamber S of the buffer unit 1420.
  • the uppermost point K1 and the shock absorbing portion 1420 of the upper end of the piston 1440 defined as the upper end of the piston 1440 reciprocates in the shock absorbing portion 1420.
  • the controller 180 When located at the predetermined position K3 between the lowest points K2, when the pressure of the pressure information at that time is equal to or less than the predetermined reference pressures P1 and P2, the controller 180 is connected to the buffer fluid. It can be determined that a leak has occurred.
  • the dashed-dotted line may be a signal relating to position information detected from the position sensor 200 as the piston 1440 reciprocates on the buffer unit 1420.
  • the solid line may be a signal regarding pressure information detected from the pressure sensor 150.
  • the position of the piston 1440 in FIG. 5 indicates that the upper end of the piston 1440 is advanced on the buffer portion 1420 to reach the lowest point.
  • the position sensor 200 may not detect the piston 1440.
  • the position sensor 200 may have a predetermined time ( From t1), the piston 1440 may be detected.
  • the signal related to the position information detected from the position sensor 200 may detect the piston 1440 at a specific time point t1-t2, and the other specific time point 0-t1, At t2-t3), the piston 1440 cannot be detected.
  • the controller 180 can determine whether the piston 1440 moves forward or backward at a predetermined time point and the position of the piston 1440.
  • the pressure of the pressure information, the uppermost point (K1) of the upper end of the piston 1440 is defined as the upper end of the piston 1440 reciprocating in the shock absorbing portion 1420 and the lowest side of the shock absorbing portion 1420 At a predetermined position K3 between the points K2, it may be the pressure when the upper end of the piston 1440 is advanced.
  • the predetermined position K3 between the uppermost point K1 of the upper end of the piston 1440 and the lowermost point K2 of the shock absorbing part 1420 may be a position sensor 200 of the piston 1440. It may be a position at a time point t2 at which the position is not sensed, and at the moment t2 when the upper end of the piston 1440 reaches the predetermined position K3, the pressure sensor 150 at that time t2 It may be data used to determine whether the pressure (P6) detected from the () satisfies a predetermined condition.
  • the forward movement of the piston 1440 is advanced by the pressure of the buffer fluid of the shock absorbing portion 1420, and the hydraulic fluid flows into the rear chamber 1432 to provide the pressure of the hydraulic oil.
  • the controller 180 can more accurately determine the leakage of the buffer fluid based on the pressure information when the upper end of the piston 1440 is advanced.
  • the predetermined condition may be a condition in which the pressure change value ⁇ P of the pressure information at a predetermined position where the piston 1440 is located with respect to the buffer unit 1420 is equal to or greater than a predetermined reference pressure change value.
  • the pressure change value ⁇ P is the difference between the highest pressure P4 and the pressure P6 at the time point t2 at which the upper end of the piston 1440 changes to a position K3 which is not detected from the position sensor 200. Can be.
  • the pressure change value ⁇ P of the pressure information may be a pressure change value ⁇ P when the upper end of the piston 1440 advances at a predetermined position K3.
  • the pressure change value ⁇ P of the pressure information is an instantaneous rate of change (inclination of the tangent line) at the time t2 at which the upper end of the piston 1440 is advanced and changes to a position K3 which is not detected by the position sensor 200. Can be.
  • controller 180 determines that leakage of the buffer fluid has occurred, a function implemented by the controller 180 will be described in detail.
  • the controller 180 may output a warning message through the output module 190.
  • controller 180 may stop the reciprocating motion of the piston 1440 when it is determined that the leakage of the buffer fluid occurs.
  • the controller 180 may output a warning message to the user through the output module 190 when the pressure of the pressure information is equal to or greater than the first pressure P1, and the pressure information.
  • the pressure is less than or equal to the second pressure P2 smaller than the first pressure P1, the reciprocating motion of the piston 1440 may be stopped.
  • the controller 180 may notify the user of the fact through the output module 190 when the leaking degree of the buffer fluid is at a warning level, and the user's separate operation when the leaking degree of the buffer fluid is at or above the warning level. Without it, the reciprocating motion of the piston 1440 can be stopped.
  • the controller 180 can prevent damage to the piston 1440 due to leakage of the buffer fluid.
  • the controller 180 may control the shutoff valve 1480 such that the shutoff valve 1480 blocks the flow of the working oil.
  • the shutoff valve 1480 when the controller 180 does not control the shutoff valve 1480, the shutoff valve 1480 is in a connection position 1480-2, and when the controller 180 controls the shutoff valve 1480.
  • the shutoff valve 1480 may be changed from the connecting position 1480-2 to the blocking position 1480-1.
  • the controller 180 may control the shutoff valve 1480 to be changed from the connection position 1480-2 to the shutoff position 1480-1, and as a result, the shutoff valve 1480 controls the flow of hydraulic oil. You can block.
  • the control valve 1460 is continuously in the reverse position.
  • the hydraulic oil of the hydraulic source 160 may not flow into the rear chamber 1432 so that the reciprocating motion of the piston 1440 may not be implemented.
  • the controller 180 controls the hydraulic pressure source 160 so that the hydraulic pressure source 160 supplies hydraulic oil to the breaker 1000, and the hydraulic pressure source 160 actuates the breaker 1000. It can be controlled to off state without supplying.
  • the controller 180 may control the hydraulic source 160 to prevent the hydraulic oil from being supplied to the breaker 1000.
  • controller 180 may control the shift valve 1470 to control the reciprocating motion of the piston 1440 when it is determined that leakage of the buffer fluid occurs.
  • the controller 180 may control the piston 1440 to change to the short stroke state by controlling the shift valve 1470 when the piston 1440 determines that the leakage of the buffer fluid occurs in the long stroke state.
  • the piston 1440 may be stopped by controlling the shutoff valve 1480.
  • the controller 180 may sequentially control the shift valve 1470 and the shutoff valve 1480, so that when the piston 1440 is a long stroke, the controller 180 may sequentially change to a short stroke and stop again at the short stroke.
  • the user may recognize that the leakage of the buffer fluid has occurred by changing the reciprocating state of the piston 1440 by the control of the controller 180.
  • the warning operation of the controller 180 may mean an operation of outputting a warning message to the user through the output module 190 and / or changing the reciprocating motion state of the piston 1440.
  • controller 180 may control the filling valve 1310 to fill the buffer fluid in the buffer 1420.
  • the controller 180 stops the reciprocating motion of the piston 1440 when it is determined that leakage of the buffer fluid has occurred, and then the filling part 1300 fills the buffer fluid on the buffer part 1420.
  • the control unit 1310 is changed from the blocking position to the connecting position, and when the pressure information of the pressure information reaches a predetermined buffering pressure due to the filling of the buffering fluid, further buffering fluid is filled on the buffering unit 1420.
  • the filling valve 1310 may be controlled to block the change from the connection position to the blocking position.
  • the controller 180 stops the reciprocating motion of the piston 1440 and controls the filling valve 1310 to a predetermined buffer pressure.
  • the buffer fluid may be filled on the buffer unit 1420 until it is reached.
  • the predetermined buffer pressure may be set by the user, or may be set based on pressure information obtained from the pressure sensor 150 in a normal state in which the buffer fluid does not leak and / or in a state in which the buffer fluid leaks.
  • the chisel 1600 hits an object according to the reciprocating motion of the piston 1440 in the cylinder 1430 (S10).
  • the buffer part buffers the movement of the piston 1440 using the buffer fluid.
  • the pressure sensor 150 provided on the inner surface 1421 of the 1420 detects the pressure information on the shock absorbing portion 1420 when the piston 1440 is moved on the shock absorbing portion 1420 (S20) and the controller 180. ) Satisfies a predetermined condition based on the detected pressure information, and may determine that the leakage of the buffer fluid has occurred and perform a warning operation (S30).
  • the controller 180, the pressure sensor 150, the position sensor 200, the shutoff valve 1480, and the shift valve ( 1470, the filling valve 1310 and the output module 190 are capable of wired communication or wireless communication, and are controlled by the controller 180 to block the valve 1480, the shift valve 1470, and the filling valve 1310. And the output module 190 may be controlled.
  • the predetermined reference pressure (P1, P2, P3), the predetermined reference pressure change value, etc. may be input by the input unit 195, the controller 180 is a normal state or buffer buffer fluid does not leak or It may be set based on the pressure information obtained from the pressure sensor 150 in the state of the fluid leakage.
  • the predetermined reference pressure (P1, P2, P3), the predetermined reference pressure change value, etc. is a normal state in which the controller 180 does not leak the buffer fluid based on the temperature measured from a temperature sensor (not shown) or / And it may be set based on the pressure information obtained from the pressure sensor 150 in the state of leakage of the buffer fluid.
  • the predetermined reference pressures P1, P2, and P3, the predetermined reference pressure change value, and the like are measured on the charging unit 1300 measured from a temperature sensor (not shown). It may be set based on temperature and / or external temperature.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Selon un mode de réalisation, la présente invention concerne un concasseur hydraulique qui comprend : un cylindre ayant une pluralité d'orifices hydrauliques ; un piston qui permet d'effectuer un mouvement alternatif dans le cylindre par pression hydraulique d'huile hydraulique s'écoulant dans ou hors de l'orifice hydraulique ; une partie tampon destinée à amortir le mouvement du piston au moyen d'un fluide tampon ; un capteur de pression destiné à détecter des informations de pression sur la partie tampon lorsque le piston est déplacé sur la partie tampon ; un module de transmission destiné à fournir les informations de pression à un dispositif de commande qui détermine si le fluide tampon fuit de la partie tampon sur la base des informations de pression détectées et qui effectue une opération d'avertissement lorsqu'il est déterminé que le fluide tampon a fui.
PCT/KR2017/001777 2017-02-10 2017-02-17 Concasseur hydraulique, système de surveillance de fluide tampon et procédé de surveillance de fluide tampon WO2018147492A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2017-0018975 2017-02-10
KR1020170018975A KR101870072B1 (ko) 2017-02-10 2017-02-10 유압식 브레이커, 완충유체 모니터링 시스템 및 완충유체 모니터링 방법

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CN108953476A (zh) * 2018-09-04 2018-12-07 徐州徐工矿山机械有限公司 一种破碎机反击板缓冲液压系统及其控制方法
CN110005015A (zh) * 2019-05-07 2019-07-12 徐州徐工挖掘机械有限公司 一种双挡调频的破碎锤控制系统及控制方法

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JP2544726Y2 (ja) * 1991-02-28 1997-08-20 株式会社小松製作所 衝撃リッパの異常検出装置
JPH1025769A (ja) * 1996-07-11 1998-01-27 Hitachi Constr Mach Co Ltd 油圧駆動装置の配管油漏れ防止装置
KR20040095120A (ko) * 2003-05-06 2004-11-12 이일재 유압타격장치
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JP2544726Y2 (ja) * 1991-02-28 1997-08-20 株式会社小松製作所 衝撃リッパの異常検出装置
JPH055603A (ja) * 1991-06-27 1993-01-14 Mazda Motor Corp ピストンのストローク検出装置
JPH1025769A (ja) * 1996-07-11 1998-01-27 Hitachi Constr Mach Co Ltd 油圧駆動装置の配管油漏れ防止装置
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KR20160078716A (ko) * 2014-12-24 2016-07-05 현대중공업 주식회사 굴삭기의 붐 실린더 제어시스템

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CN108953476A (zh) * 2018-09-04 2018-12-07 徐州徐工矿山机械有限公司 一种破碎机反击板缓冲液压系统及其控制方法
CN110005015A (zh) * 2019-05-07 2019-07-12 徐州徐工挖掘机械有限公司 一种双挡调频的破碎锤控制系统及控制方法
CN110005015B (zh) * 2019-05-07 2023-06-06 徐州徐工挖掘机械有限公司 一种双挡调频的破碎锤控制系统及控制方法

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