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WO2018211573A1 - Raccord pour lutte contre l'incendie - Google Patents

Raccord pour lutte contre l'incendie Download PDF

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Publication number
WO2018211573A1
WO2018211573A1 PCT/JP2017/018268 JP2017018268W WO2018211573A1 WO 2018211573 A1 WO2018211573 A1 WO 2018211573A1 JP 2017018268 W JP2017018268 W JP 2017018268W WO 2018211573 A1 WO2018211573 A1 WO 2018211573A1
Authority
WO
WIPO (PCT)
Prior art keywords
joint
peripheral surface
fire hose
fire
insertion tube
Prior art date
Application number
PCT/JP2017/018268
Other languages
English (en)
Japanese (ja)
Inventor
博己 岩崎
Original Assignee
寧波瀛震机械部件有限公司
博己 岩崎
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 寧波瀛震机械部件有限公司, 博己 岩崎 filed Critical 寧波瀛震机械部件有限公司
Priority to PCT/JP2017/018268 priority Critical patent/WO2018211573A1/fr
Publication of WO2018211573A1 publication Critical patent/WO2018211573A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C33/00—Hose accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses
    • F16L33/02—Hose-clips
    • F16L33/12—Hose-clips with a pivoted or swinging tightening or securing member, e.g. toggle lever

Definitions

  • the present invention relates to a joint structure for a fire hose that is directly connected to a fire hose or connected via a receiving port connected to the fire hose.
  • a push ring 7 slidable in the axial direction is attached to the metal fitting 3 and the metal fitting.
  • a fitting groove 8 is provided on the outer periphery on the side 2, a tape-like reflecting material 9 is wound around the fitting groove 8, and an elastic band 10 formed from a transparent resin so as to wrap around the outer periphery of the reflecting material 9.
  • the elastic band 8 protrudes in a convex shape on the outer periphery of the receiving metal fitting 2 so as to protect the joint fitting and the hose terminal from being damaged when dragged on the road surface, and to reduce the impact at the time of dropping or collision. It is said that.
  • a cylindrical insertion member 2 and a socket portion 3 are provided at the tip as a hose joint that can be connected quickly and quickly and at the same time can be improved in price by simplifying the structure.
  • a receiving member 4 and an operating ring 5 that is externally fitted so as to be pivotable to an intermediate position on the outside of the insertion member 2, and the operating ring 5 is provided with a protrusion provided with a locking projection on the inner surface side. 10 is provided, and the operation ring 5 is rotated on the outer periphery of the socket portion 3 at the approach position in the axial direction of the locking projection, whereby the insertion member 2 and the receiving member 4 are connected by the engagement of the locking projection.
  • maintains is disclosed (refer patent document 2).
  • These fire hose joints are provided with locking claws that can protrude and retract inward from the inner surface of the pipe at the position where the elastic band of the bracket is attached.
  • the connection state is locked by engaging with the groove.
  • a push ring is attached to the base end side of the circumferential groove of the metal fitting. At the time of release, the push ring is pushed toward the axial direction and slid to move the locking claw in the circumferential groove to the outer circumference side. It is pushed out to unlock the connected state.
  • the fire hose joint is composed of a connecting pipe (so-called bamboo shoot pipe) having a step on the outer side opposite to the connection side of the receiving metal fitting or insertion fitting, and fire fighting is performed via this connecting pipe (so-called bamboo shoot pipe).
  • a connecting pipe so-called bamboo shoot pipe
  • bamboo shoot pipe Connected with hose.
  • the front part on the opposite side to the connection side of a receiving metal fitting or a metal fitting is directly fixedly connected with the bamboo shoot fire hose, without going through a connection pipe (so-called bamboo shoot pipe).
  • fire hoses are generally folded or rolled when not in use, and during fire extinguishing activities, the fire hose joint is connected to a water supply pipe such as a pump car or stand pipe, and the hose in the stowed state is extended.
  • Water is discharged at high pressure.
  • the water discharge pressure at this time is about 3 kg / cm 2 (0.3 MPa) at the tube tip, and the standard pressure of about 3 to 8.5 kg / cm 2 (0.3 to 0.85 MPa) is set as the pump output. For this reason, an internal pressure of about 3 kg / cm 2 (0.3 MPa) or more is applied to the fire hose coupling portion.
  • the nozzle part (water discharger) on the front side is greatly swung left and right, and the nozzle part (water discharger) A joint for a fire hose that avoids the dangerous situation where the fire keeps moving, or reduces the half power to the fire hose and the nozzle part (water discharger) on the front side, thereby eliminating the influence of the torsional force on the fire fighting activities. Is required.
  • the present invention has almost no risk of fluid leaking from (joining part) between the insertion tube that can be connected in the metal fitting of the firefighting joint and the rotation frame that is fitted and fixed in this insertion tube so as to freely rotate, It is another object of the present invention to provide a fire hose joint that has almost no possibility of dust entering through a gap between the insertion tube and the rotary frame.
  • the joint for a fire hose is a plug tube that can be connected by inserting one end into a metal fitting of a fire joint having a receiving port, and either the outer peripheral surface or the inner peripheral surface of the other end side of the plug tube.
  • a rotation frame that is rotatably fitted and fixed, one of the outer peripheral surface or the inner peripheral surface of the insertion tube, and an outer peripheral surface or a front inner peripheral surface of a fitting portion of the rotary frame that is fitted therein.
  • a plurality of bearing balls that are narrowed along the circumferential surface of the pipe, and either the outer circumferential surface or the inner circumferential surface of the insertion tube, or the rotating frame that is fitted therein And a pair of water-stop rings embedded so as to sandwich the plurality of bearing balls along either the outer peripheral surface of the fitting portion or the inner peripheral surface of the inner peripheral surface, and one end side of the insertion tube Front portion, or the the rotary frame fitted and fixed side to any of the preceding portion at the other end on the opposite side, characterized in that it has a hose connection structure fire hose is connected.
  • said structure narrows along either the outer peripheral surface or inner peripheral surface of an insertion pipe, and either the outer peripheral surface or inner peripheral surface of the fitting part of the rotation frame fitted in this along a pipe peripheral surface. Since the plurality of bearing balls are provided, the torsional force generated when internal pressure is applied to the fire hose can be reduced or eliminated by the rotation of the rotary frame 3. For this reason, a dangerous state can be avoided or a half power can be reduced, and the influence of the torsion force on the fire fighting activity can be eliminated. In addition, a fire hose joint having a compact configuration can be provided.
  • a plurality of bearing balls are sandwiched along the tube peripheral surface of either the outer peripheral surface or the inner peripheral surface of the insertion tube and either the outer peripheral surface or the inner peripheral surface of the fitting portion of the rotary frame that is fitted into the insertion tube. Since there is a pair of water-stop rings embedded in the pipe, fluid leaks from between the insertion tube that can be connected to the bracket of the firefighting joint and the rotary frame that is fitted and fixed so as to be freely rotatable in the insertion tube. It is possible to provide a fire hose joint that has almost no fear and hardly causes dust to enter through the gap between the insertion tube and the rotary frame.
  • the tip part on one end side of the insertion pipe is a short pipe having a stop part whose diameter is expanded at the tip of the pipe, and a release ring for removing the receiving metal fitting on the outer periphery of the pipe. It is slidably fitted from the fitting part of the rotary frame to the stop part along the pipe length direction, and the front side which is the other end side of the rotary frame has a continuous step on the outer circumference and connects the fire hose to the outer circumference.
  • a possible hose connection pipe structure is integrally formed.
  • the other end side (opposite side of a joint connection side) of the insertion pipe of a Matino type joint is comprised by the rotation frame which can rotate freely, and the other end side of a rotation frame rotates what is called a bamboo shoot pipe root.
  • a fire hose can be inserted and fixed by a frame 31. Because the tip of one side of the mating joint joint is freely rotatable, it can be connected to various Matino-type brackets, and the tip of the other end can be connected in a replaceable manner. Even though it is a compact joint space, the torsion caused by pressurization of the hose is automatically eliminated, and an extra load due to the twisting force is not applied to the supply pipe side.
  • the insertion tube is a male threaded portion that is engaged with a female screw groove formed in a metal fitting of a fire fighting joint having the receiving port on the outer peripheral surface at the tip of the one end.
  • the front side which is the side, has a continuous step on the outer periphery and is integrally formed with a hose connection pipe structure that can connect the fire hose to the outer periphery.
  • the other end side (opposite side of a joint connection side) of the insertion pipe of a screwing type joint is comprised by the rotatable frame which can rotate freely, and the other end side of a rotating frame rotates what is called a bamboo shoot pipe root.
  • a fire hose can be inserted and fixed by a frame 31.
  • the tip of one end of the insertion joint of the threaded joint is configured to be freely rotatable, and can be connected to various threaded receiving brackets, and the tip of the other end can be connected in a replaceable manner. Even though it is a compact joint space, the torsion caused by pressurization of the hose is automatically eliminated, and an extra load due to the twisting force is not applied to the supply pipe side.
  • the insertion pipe has a hook for detachably locking the metal fitting of the fire joint to the insertion pipe, and releases the hook of the fire joint by releasing the hook.
  • a hose connection pipe structure that has a continuous step on the outer periphery and can be connected to the outer periphery of the fire hose is integrally formed on the front side that is the other end side of the rotating frame. It is characterized by.
  • the other end side (opposite side to the joint connection side) of the insertion pipe of a European style joint is comprised by the rotatable frame which can rotate freely, and the other end side of a rotating frame rotates what is called a bamboo shoot pipe root.
  • a fire hose can be inserted and fixed by a frame 31. Because the tip of one end of the insertion joint of the European joint is configured to be freely rotatable, it can be connected to various European-style receiving metal fittings, and the tip of the other end can be connected in a replaceable manner. Even though it is a compact joint space, the torsion caused by pressurization of the hose is automatically eliminated, and an extra load due to the twisting force is not applied to the supply pipe side.
  • the present invention there is almost no risk of fluid leaking between the insertion tube that can be connected to the bracket of the firefighting joint and the rotary frame that is fitted and fixed to the insertion tube so as to be freely rotatable. It is possible to provide a fire hose joint that hardly causes dust to enter through the gap between the tube and the rotating frame.
  • FIG. 2 is a cross-sectional view taken along a line AA in FIG. It is a front coupling
  • FIG. 1 is a front cross-sectional view of a joint for a fire hose according to the first embodiment.
  • FIG. 2 is a front coupling half sectional view showing a fitting structure by a matino type joint for a fire hose joint according to the first embodiment.
  • 3 is a cross-sectional view taken along the line AA of FIG.
  • embodiments of the joint for a fire hose according to the present invention will be described with reference to FIGS.
  • a fire hose joint 1 according to the first embodiment includes a plug tube 2 that can be connected by inserting one end into a metal fitting of a fire joint having a receptacle, and an outer peripheral surface on the other end side of the plug tube 2. And a rotating frame 3 that is rotatably fitted and fixed. Further, the fire hose joint 1 according to the first embodiment has a continuous step on the outer periphery on the other end side opposite to the fitting and fixing side of the rotary frame 3 and can be connected to the fire hose on the outer periphery.
  • a hose connection pipe structure (so-called bamboo shoot pipe) is integrally formed.
  • the fire hose joint 1 according to the first embodiment is narrow along the pipe peripheral surface between the outer peripheral surface of the insertion tube 2 and the inner peripheral surface of the fitting portion 31 of the rotary frame 3 fitted therein.
  • a plurality of bearing balls B are provided.
  • the fitting portion 31 of the rotating frame 3 is provided with a plurality of through holes 32 for inserting the bearing balls B.
  • a ball groove 23 for narrowing the bearing ball B is provided along the peripheral surface of the other end of the insertion tube 2 that is fitted and fixed to the rotary frame 3.
  • the bearing balls B are introduced into the plurality of through holes 32 provided in the fitting portion 31 of the rotary frame 3, By closing the through hole 32 with the threaded screw IN, a plurality of bearing balls B are narrowed along the tube peripheral surface between the outer peripheral surface of the insertion tube 2 and the inner peripheral surface of the fitting portion 31 of the rotary frame 3. Established.
  • the fire hose joint 1 includes a pipe peripheral surface such that a plurality of bearing balls B are sandwiched between the outer peripheral surface of the insertion tube 2 and the inner peripheral surface of the fitting portion 31 of the rotary frame 3.
  • a pair of water stop ring dovetails D1 and D2 are provided along the water stop ring, and water stop rings R1 and R2 are fitted in the water stop ring dovetails D1 and D2, respectively.
  • the dovetail groove for the water stop ring provided on the outer side is fixed to the dovetail groove for the water stop ring D1, and the dovetail groove for the water stop ring provided on the inner side.
  • a pair of water stop ring dovetails D1 and D2 are provided along the circumferential surface of the pipe so as to sandwich a plurality of bearing balls B.
  • a release ring 22 for removing the joint receiving metal fitting is fitted so as to be slidable from the fitting portion of the rotary frame 2 to the stop portion 21 along the pipe length direction.
  • a ring-shaped member 22 a having a slightly larger inner diameter than the outer diameter of the outer periphery of the tube of the rotary frame 2 and a push ring 22 b erected in the outer peripheral direction at the end of the ring-shaped member 22 a are integrated. Molded.
  • the insertion tube 2 is inserted into the matino joint MB, and the engaging claw MC of the matino joint MB is expanded at the tip of the tube provided at the tip of the insertion tube 2.
  • the contact 1 for fire hose is connected to the Matino joint MB by contacting the end surface of the stop portion 21 having a diameter.
  • the fire hose joint 1 according to the first embodiment includes the insertion tube 2 that can be connected by inserting one end into the metal fitting of the fire joint having a receiving port, and the other end of the insertion tube 2. And a rotating frame 3 that is rotatably fitted and fixed along the outer peripheral surface. Further, the fire hose joint 1 according to the first embodiment is narrowly provided along the pipe peripheral surface between the outer peripheral surface of the insertion tube 2 and the inner peripheral surface of the fitting portion of the rotary frame 3 to be fitted therein. And a plurality of bearing balls B.
  • the fire hose joint 1 includes a plurality of fire hose joints along the outer circumferential surface of the insertion tube 2 and the inner circumferential surface of the fitting portion 31 of the rotary frame 3 fitted therein.
  • a fire hose is connected to the tip of the other end of the rotating frame 3 on the opposite side to the fitting and fixing side, with a pair of water stop rings R1 and R2 embedded so as to sandwich the bearing ball B. It has a hose connection structure (bamboo shoot pipe).
  • the fire hose joint 1 according to the first embodiment, between the outer peripheral surface of the insertion tube 2 and the inner peripheral surface of the fitting portion 31 of the rotary frame 3 fitted therein, along the pipe peripheral surface. Since the plurality of bearing balls B are provided narrowly, the torsional force generated when internal pressure is applied to the fire hose can be reduced or eliminated by the rotation of the rotary frame 3. For this reason, a dangerous state can be avoided or a half power can be reduced, and the influence of the torsion force on the fire fighting activity can be eliminated. In addition, a fire hose joint having a compact configuration can be provided.
  • high-pressure fluid fire-fighting water
  • the tip portion on one end side of the insertion tube 2 is composed of a short tube having a stop portion 21 whose diameter is expanded at the tip of the tube, and is received on the outer periphery of the tube.
  • a release ring 22 for removing the metal fitting is fitted so as to be slidable from the fitting portion of the rotary frame 3 to the stop portion 21 along the pipe length direction.
  • the front side which is the other end side of the rotating frame 3 is integrally formed with a hose connection pipe structure (bamboo shoot pipe) having a continuous step on the outer periphery and capable of connecting the fire hose to the outer periphery.
  • the other end side (the side opposite to the joint connection side) of the insertion tube of the matino joint is configured with the rotatable frame 3 that can freely rotate.
  • the base of the so-called bamboo shoot pipe is made to be able to insert and fix the fire hose by the rotating frame 3.
  • the tip of one end of the insertion joint of the matino joint is configured to be freely rotatable, and can be connected to various matino receiving brackets, and the tip of the other end can be connected to replace the hose. Therefore, the torsion caused by the pressure of the hose is automatically eliminated while the space is compact, and an extra load due to the twisting force is not given to the supply pipe side.
  • FIG. 4 is a front cross-sectional view of a joint for a fire hose according to the second embodiment.
  • FIG. 5 is a view of a fire hose joint viewed from the direction B of FIG.
  • the fire hose joint 1A according to the second embodiment will be described with reference to FIGS. 4 and 5.
  • the same components as those described with reference to FIGS. A duplicate description is omitted.
  • a fire hose joint 1A according to the second embodiment has a connection structure with a metal fitting of a fire joint of the insertion tube 2 according to the first embodiment described with reference to FIGS. And different.
  • the connection structure of the insertion tube 2 to the metal fitting of the fire joint is not a machino joint such as the fire hose joint 1 according to the first embodiment described with reference to FIGS.
  • the structure is such that it is connected to the metal fitting of the fire-fighting joint by screw connection with a male screw and a female screw.
  • the fire hose joint 1 ⁇ / b> A includes a male screw groove portion 25 provided with a screw groove on the outer peripheral surface on one end side of the insertion tube 2.
  • a plurality of protruding gripping portions 26 are provided on the other end side of the insertion tube 2, that is, on the rotating frame 3 side with respect to the male screw groove portion 25.
  • a plate ring 34 is provided on the end surface on the other end side of the insertion tube 2.
  • male screw grooves provided on the outer peripheral surface on one end side of the insertion tube 2 are provided on the inner peripheral surface of the metal fitting of the fire joint. Screwed to the female screw groove.
  • the insertion tube 2 has a female screw groove formed in the metal fitting of the fire joint having a receiving port on the outer peripheral surface at the tip of one end side. It has a male screw groove portion 25 to be screwed, and has a plurality of protruding gripping portions 26 closer to the rotary frame 3 than the male screw groove portion 25.
  • the fire hose joint 1A according to the second embodiment is configured with a rotating frame in which the other end side (opposite side of the joint connecting side) of the threaded joint is freely rotatable, and the other end side of the rotating frame.
  • the root of the so-called bamboo shoot tube is a fire hose that can be inserted and fixed by the rotating frame 31.
  • the tip of one end of the insertion joint of the threaded joint is configured to be freely rotatable, and can be connected to various threaded receiving brackets, and the tip of the other end can be connected to replace the hose. Therefore, the torsion caused by the pressure of the hose is automatically eliminated while the space is compact, and an extra load due to the twisting force is not given to the supply pipe side.
  • Other effects are the same as the joint for a fire hose according to the first embodiment.
  • FIG. 6 is a front cross-sectional half view of a joint for a fire hose according to a modification of the second embodiment.
  • the insertion tube 2 of the fire hose joint 1A according to the second embodiment described with reference to FIGS. 4 and 5 has a plurality of protruding gripping portions 26 on the rotating frame 3 side of the male screw groove portion 25.
  • the insertion tube 2 of the fire hose joint 1B according to the modification of the second embodiment shown in FIG. 6 is formed on the outer peripheral surface of the insertion tube 2 on the rotary frame 3 side of the male screw groove portion 25 (for example, It has a non-slip processing portion 27 that is knurled.
  • the other configuration of the fire hose joint 1B according to the modification of the second embodiment is the same as the configuration of the fire hose joint 1A according to the second embodiment described with reference to FIGS. For this reason, the same reference numerals are assigned and redundant description is omitted.
  • skid process provided in the outer peripheral surface of the insertion tube 2 of the fire hose joint 1B which concerns on the modification of 2nd Embodiment is not restricted to a knurling process, You may give another anti-slip process.
  • the insertion tube 2 is a female formed in a metal fitting of a fire joint having a receiving port on the outer peripheral surface at the tip of one end side. It has a male screw groove portion 25 that is screwed with the screw groove portion, and has a non-slip processing portion 27 in which an anti-slip process is applied to the outer peripheral surface on the rotating frame 3 side of the male screw groove portion 25.
  • the protruding gripping portion 26 is not provided, a more compact fire hose joint can be provided.
  • Other configurations and effects are the same as the fire hose joint 1A according to the second embodiment.
  • FIG. 7 is a front cross-sectional half view of a joint for a fire hose according to a third embodiment.
  • the fire hose joint 1C according to the third embodiment will be described with reference to FIG. 7.
  • the same components as those described with reference to FIGS. 1 to 6 are denoted by the same reference numerals. Therefore, duplicate explanations are omitted.
  • the fire hose joint 1C according to the third embodiment is different from the fire hose joint 1 according to the first embodiment described with reference to FIGS. 1 to 3 in the release structure for removing the bracket of the fire joint.
  • the release structure of the metal fitting for the fire joint of the insertion tube 2 stops the release ring 22 like the fire hose joint 1 according to the first embodiment described with reference to FIGS. It is not the structure which removes the metal fitting of a fire-fighting joint by sliding to the part 21.
  • the insertion tube 2 of the fire hose joint 1 ⁇ / b> C includes a hook 28 that removably locks the metal fitting of the fire joint, and a hook 28 that releases the hook 28.
  • a hook release mechanism 29 for releasing the metal fitting of the fire fighting joint.
  • the hook release mechanism 29 includes an elastic member 29a such as a string-wound spring that urges the hook 28 toward the center of the insertion tube 2 and a plurality of (two) knobs for releasing the urging of the elastic member 29a. 29b. Then, by pulling a plurality (two) of knob portions 29b of the hook release mechanism 29 in the direction opposite to the urging direction of the hook 28, the hook 28 can be released and the metal fitting of the fire joint can be released.
  • the insertion tube 2 of the fire hose joint 1C includes the hook 28 that removably locks the metal fitting of the fire fighting joint to the insertion tube, and the hook 28 is released to release the hook 28. And a hook release mechanism 29 for releasing the metal fitting.
  • the fire hose joint 1C according to the third embodiment is composed of a rotating frame 3 in which the other end side of the insertion pipe of the European joint (the side opposite to the joint connecting side) can freely rotate.
  • the base of the so-called bamboo shoot tube is made to be able to insert and fix the fire hose by the rotating frame 31.
  • the tip of one end of the insertion joint of the European joint is configured to be freely rotatable, it can be connected to various European-style receiving metal fittings, and the tip of the other end can be connected in a replaceable manner. Even though it is a compact joint space, the torsion caused by pressurization of the hose is automatically eliminated, and an extra load due to the twisting force is not applied to the supply pipe side.
  • Other effects are the same as the joint for a fire hose according to the first embodiment.
  • the rotating frame 3 is rotatably fitted and fixed along the outer peripheral surface on the other end side of the inserting tube 2 (the inside of the inserting tube 2 is in the rotating frame 3).
  • the rotation frame 3 is rotatably fitted and fixed along the inner peripheral surface of the other end side of the insertion tube 2 (the rotation frame 3 is inserted and fixed in the insertion tube 2). You may do it.
  • the fire hose joint 1 according to the first embodiment, the fire hose joints 1A and 1B according to the second embodiment and its modifications, and the water stop rings R1 and R2 of the fire hose joint 1C according to the third embodiment.
  • a water stop ring dovetail D 2 for the water stop ring R 2 is provided on the outer peripheral surface of the insertion tube 2, and an outer water stop ring R 1 is provided on the inner peripheral surface of the rotating frame 3.
  • It may be configured to have a dovetail groove D1 for the water stop ring, or as shown in FIG. 8B, a dove for water stop ring of a pair of water stop rings R1, R2 on the inner peripheral surface of the rotating frame 3. You may make it have groove
  • the outer peripheral surface of the insertion tube 2 has water stop ring dovetails D1 and D224 and a water stop ring dovetail 33 for the pair of water stop rings R1 and R2.
  • a water stop ring dovetail D 1 for the water stop ring R 1 is provided on the outer peripheral surface of the insertion tube 2, and an outer water stop ring is provided on the inner peripheral surface of the rotating frame 3. You may comprise so that it may have the dovetail D2 for the water stop ring of R2,
  • the water stop ring dovetails D1 and D2 may be provided on the inner peripheral surface of the insertion tube 2, or the water stop ring dovetails D1 and D2 may be provided on the outer peripheral surface of the rotary frame 3. Further, the water stop ring dovetail D1 may be provided on the inner peripheral surface of the insertion tube 2, and the water stop ring dovetail D2 may be provided on the outer peripheral surface of the rotary frame 3. The water stop ring dovetail D2 may be provided on the surface, and the water stop ring dovetail D1 may be provided on the outer peripheral surface of the rotary frame 3.
  • the fire hose joint 1C according to the third embodiment has a continuous hose connection on the outer side on the other end side opposite to the fitting and fixing side of the rotary frame 3 so that the fire hose can be connected to the outer periphery.
  • the pipe structure (bamboo shoot pipe) is integrally formed, but it has a hose connection structure (bamboo shoot pipe) to which a fire hose is connected at the tip of one end side of the insertion pipe 2, and the rotary frame 3 is connected to the fire joint. One end side may be inserted into the receiving bracket and connected.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Joints Allowing Movement (AREA)

Abstract

Le problème décrit par la présente invention est de fournir un raccord de tuyau d'incendie qui ne laisse passer quasiment aucune fuite d'un fluide au niveau d'un espace entre un cadre rotatif et un tuyau d'insertion d'un assemblage de lutte contre l'incendie et qui risque moins de permettre l'entrée de poussière par un espace entre le tuyau d'insertion et le cadre rotatif. La solution selon la présente invention concerne : un tuyau d'insertion qui peut être relié à un support d'un joint de lutte contre l'incendie comprenant un emboîtement ; un cadre rotatif qui est raccordé et fixé rotatif à la surface circonférentielle externe ou interne de l'autre côté d'extrémité du tuyau d'insertion ; une pluralité de billes de roulement prises en sandwich, le long des surfaces circonférentielles du tuyau, entre la surface circonférentielle externe ou interne du tuyau d'insertion et la surface circonférentielle externe ou interne de la partie de raccordement du cadre rotatif raccordé au tuyau d'insertion ; et une paire d'anneaux de coupure d'eau incorporées le long d'une surface circonférentielle du tuyau qui est la surface circonférentielle externe ou interne du tuyau d'insertion ou la surface circonférentielle externe ou interne de la partie de raccordement du cadre rotatif raccordé au tuyau d'insertion de façon à ce que la paire d'anneaux de coupure d'eau prenne en sandwich la pluralité de billes de roulement.
PCT/JP2017/018268 2017-05-16 2017-05-16 Raccord pour lutte contre l'incendie WO2018211573A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020121069A (ja) * 2019-01-31 2020-08-13 寧波瀛震机械部件有限公司 消防ホース用継手

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5340168A (en) * 1991-07-05 1994-08-23 Barker David A Piloted swivel seal fitting
JP3188807U (ja) * 2013-04-19 2014-02-13 寧波瀛震机械部件有限公司 消防ホース用接手
JP3190937U (ja) * 2013-11-19 2014-06-05 承弘工業股▲ふん▼有限公司 消防用ホースとクイックカップリングとの間の接続装置
JP2016073515A (ja) * 2014-10-08 2016-05-12 学校法人立命館 消火用ノズル

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5340168A (en) * 1991-07-05 1994-08-23 Barker David A Piloted swivel seal fitting
JP3188807U (ja) * 2013-04-19 2014-02-13 寧波瀛震机械部件有限公司 消防ホース用接手
JP3190937U (ja) * 2013-11-19 2014-06-05 承弘工業股▲ふん▼有限公司 消防用ホースとクイックカップリングとの間の接続装置
JP2016073515A (ja) * 2014-10-08 2016-05-12 学校法人立命館 消火用ノズル

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020121069A (ja) * 2019-01-31 2020-08-13 寧波瀛震机械部件有限公司 消防ホース用継手
JP7336852B2 (ja) 2019-01-31 2023-09-01 寧波瀛震机械部件有限公司 消防ホース用継手

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