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WO1993014296A1 - Equipement pour enlever de la surface de roches et d'autres surfaces, des pierres et d'autres materiaux, a l'aide de jets d'eau sous haute pression - Google Patents

Equipement pour enlever de la surface de roches et d'autres surfaces, des pierres et d'autres materiaux, a l'aide de jets d'eau sous haute pression Download PDF

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Publication number
WO1993014296A1
WO1993014296A1 PCT/NO1993/000013 NO9300013W WO9314296A1 WO 1993014296 A1 WO1993014296 A1 WO 1993014296A1 NO 9300013 W NO9300013 W NO 9300013W WO 9314296 A1 WO9314296 A1 WO 9314296A1
Authority
WO
WIPO (PCT)
Prior art keywords
jet
pods
eccentrics
pressure water
link plates
Prior art date
Application number
PCT/NO1993/000013
Other languages
English (en)
Inventor
Jan Kåre HATLØ
Original Assignee
Hatloe Jan Kaare
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 Hatloe Jan Kaare filed Critical Hatloe Jan Kaare
Publication of WO1993014296A1 publication Critical patent/WO1993014296A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/024—Cleaning by means of spray elements moving over the surface to be cleaned
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/12—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
    • E01C23/128—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with hydrojets
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/005—Mobile installations, particularly for upkeeping in situ road or railway furniture, for instance road barricades, traffic signs; Mobile installations particularly for upkeeping tunnel walls
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/60—Slitting by jets of water or other liquid

Definitions

  • the present invention relates to equipment for clearing rock and other surfaces (flushing surface) of stones and other material by means of water jets under high pressure, comprising a jet head to be placed on a support means, and of the kind that is disclosed in the preamble of independent claim 1 hereinbelow.
  • the purpose of the present invention is to provide equipment for clearing more or less loose stone masses from rooi-s, abutments and sides in tunnels under construction and later maintenance by clearing off any concrete layers applied and loosened with time, and optional cleaning by means of water under high pressure. This also applies, of course, to other similar work in connection with cuttings through rock as well as cleaning vertical surfaces on houses and other constructions.
  • the tested equipment with water jets has displayed a number of weaknesses which have resulted in that, after the completion of the flushing of down stone masses from roofs, abutments and sides in tunnels or rock faces or mountain cuttings, it has often been necessary to carry out subsequent scaling with crowbars and wedges in order to obtain bare rock (clinker) .
  • Manual clearing of this kind requires from 0.5 to 2 manhours per work team per running metre of the tunnel.
  • a work team consists of three men plus power shovel and clearing bucket/work platform mounted on a motorized vehicle.
  • the cost of a work team of this kind there is also the cost of the labour to produce and renew scaling bars and wedges (wedges are used where the stone has been only partly blasted through, but considered not to be secure enough in the long term) .
  • Hydraulic hammers picks are most often used from the abutment and down to the sole of the tunnel, but not on the roof owing to the danger of the stone being hammered too much and punctured, in which case the cleaning will be incomplete owing to loose stone which does not fall down.
  • equipment for the cleaning of rock faces and other surfaces where water jets under pressure are made to oscillate over the flushing surface and where in addition to this oscillation, periodic pulsation can also be provided in the pressure of the water jets thereby enhancing the flushing effect.
  • Figure 1 schematically, in perspective shows an arrangement for the oscillating movement of two jet pods in order to produce said oscillating movement
  • Figure 2a illustrates a driving means in the form of link plates that are movable in relation to one another, upon which the jet pods are movably secured,
  • Figure 2b shows a section through the link plates and jet pods which shows that the jet pods are movably secured at their opposite ends to the link plates which are movable in relation to one another, and that there are two sets of link plates for two sets of jet pods,
  • FIG. 3a depicts the same as figure 2a
  • Figure 3b shows a section through the pairs of link plates and their eccentrics and ancillary eccentrics
  • Figure 4 illustrates a jet head seen from the side and in partial section
  • Figures 5, 6, 7 and 8 show various diagrams of the movement of the jet pod and the impact pattern of the water jet against a flushing surface at different speed ratios between the forward and rear eccentrics with attendant link plates,
  • Figure 9 shows schematically the breadth of the impact area of the water jet against a flushing surface as well as the way in which the impact areas overlap with one another when four jet pods are used in the jet head,
  • Figure 10a illustrates a flicker valve seen from one end
  • Figure 10b illustrates the same in a section along its axis
  • Figure 11a depicts a motorized vehicle with a crane boom on which is mounted a jet head seen from the side, and
  • Figure lib shows the same seen from behind on to which is drawn the extent of the crane boom and thus also the jet head, transverse to the movement of direction of the motorized vehicle.
  • Figure 1 illustrates schematically two jet pods 4 universally pivotally attached by one of their ends 4a to a connecting rod attached to two cranks or eccentrics.
  • the opposite ends 4b of the jet pods are attached in the same way to a second connecting rod or eccentric, and they are also axially slidable on said points of attachment.
  • the jet pods 4 When the eccentrics and thus the connecting rods are rotated on each pair of points of attachment at the forward and rear ends 4b,4a of the jet pods 4, which each comprise an outlet nozzle with attachment to the pressure water hose, the jet pods 4 will be given a oscillating/tilting movement whereby the pressure water jets from the outlet ends 4b of the jet pods 4 will describe a pattern on a flushing surface. This pattern will be dependent upon the eccentricity of the eccentrics, on whether the eccentrics at the forward or rear ends 4b,4a of the jet pods 4 are the same or different, and on the directions of rotation of the eccentrics and their speed of rotation relative to one another.
  • Figure 5 thus shows an impact pattern of a water jet against a flushing surface with a speed ratio of 1:1 between the eccentrics with the same eccentricity, but with phase displacement; figure 6 shows the same, but with a speed of rotation ratio of 5:1 between the eccentrics at the forward and rear ends 4b,4a of the jet pod 4; figure 7 shows the same, but with a speed ratio of 10:1; and figure 8 shows the same but with a speed ratio of 25:1.
  • the water jet On this tilting/oscillating movement of the water jet over the flushing surface, the water jet will strike against virtually all the points on the area of the flushing surface, such as can be seen from figure 8, thus hitting the loose particles/stones on the flushing surface at different places, and then by adjusting the jet head in relation to the flushing surface so that the pressure water jets strike the flushing surface at an acute angle, the pressure water jets will penetrate under and around the particles, loose stones and loosen them from the actual flushing surface of the rock face, tunnel wall, etc. which is to be cleaned.
  • the pressure water jet is interrupted at regular intervals so that there is a continually new pressure water jet front which strikes the flushing surface and the a orementioned looseparticles/stones.
  • jet head 1 mounted on an articulated crane boom 2 arranged on a motorized vehicle 3
  • jet head 11a seen from the side, and in figure lib, seen from behind, and with an indication of a path for the jet head transverse to the motorized vehicle, which can, of course, be adjusted to the curvature of the surfaces which are to be washed down, e.g., roofs, abutments and sides in-a tunnel which is being driven.
  • the schematic disclosure of the jet head in figure 4 can be said to represent a very simple*embodiment form with only one jet pod 4 with its two ends 4a,4b attached to driving means 6a,6b consisting of driven eccentrics 7a,7b arranged in a support frame B in the jet head 1.
  • Driving means for the eccentrics 7a,7b are not shown on the drawing.
  • the jet pod 4 When the two eccentrics 7a,7b are driven with the same or opposite directions of rotation, and with the same or different speeds of rotation, the jet pod 4 will be made to oscillate in that its forward end 4b with a water jet outlet and the rear end 4a coupled to the pressure water hose 5, describe circles whilst the pressure water jet, owing to the same or different rotation directions and speeds of the eccentrics 7a,7b, will be able to describe a circle in the simplest case and more or less intricate patterns of impact on the flushing surface as shown in figures 5 to 8.
  • the aforementioned embodiment of the jet head according to figure 4 may, of course, be provided with several jet pods 4 side by side and each one driven by its own pair of eccentrics 7a,7b thus providing a greater flushing surface on the flushing area in question.
  • the jet head 1 can either be guided by means of manual control of a crane boom along the flushing surface in question at the desired distance from said surface, e.g, 300 mm.
  • a detector to determine the distance between the outflow ends 4b of the jet pods 4 and the flushing surface.
  • detection of said distance can be used as information for a control centre which guides the jet head 1 along a flushing surface of uneven curvature thus maintaining at any given time the desired distance of, for instance, 300 mm.
  • two parallel jets pods 4 are arranged which are movably attached equidistant from one another and with centre lines through the pair of points of attachment of the jet pods 4 parallel to and at a distance from the centre line of the eccentrics 7a,7a' and 7b,7b' in the link plates 8a,8b, said eccentrics 7a,7b each being attached to its motor 9a,9b, and furthermore said eccentrics being mounted on frame bearings secured in the support frame B.
  • the jet pods 4 are universally mounted, e.g., by means of universal bearings at one of their ends 4a which is connected to the pressure water hoses 5, and with universal bearings which also allow axial movement, at their other ends 4b, i.e., at the outlet of the pressure water jet.
  • the link plates 8a and 8b When operating the lower driven eccentrics 7a,7b in figure 3b, the link plates 8a and 8b will move up and down during the simultaneous rotation of the ancillary eccentrics 7a',7b', in such a way that the link plates 8a,8b are made to rotate and this rotatory movement is in turn transferred to the jet pods 4 mounted by their rear and forward ends 4a,4b to said link plates as described hereinabove.
  • two pairs of link plates 8a,8a and 8b,8b can be arranged with two attendant jet pods 4 on each one of the two link plates, and where the eccentrics 7a,7a' and 7b,7b' of the link plates in each of said pair of link plates are fixed but phase displaced from one another.
  • the jet pods 4 on one of the link plates in each pair of link plates 8a,8a and 8b,8b shall not come into conflict with the second link plate in each pair of link plates 8a,8a and 8b,8b
  • the jet pods 4 are placed on projection 8c on one of the link plates displaced in relation to the corresponding projection 8c with jet pod 4 on the second link plate in each of said pairs of link plates 8a,8a and 8b,8b, and with an equal distance between the projections 8c on each link plate 8a,8a and 8b,8b, the same or greater than twice the eccentric movement of the identical eccentrics 7a,7a' and 7b,7b'.
  • the oscillating movements of the jet pods 4, and thus the impact patterns and area of impact on the flushing surface, are adjusted by means of the eccentrics 7a,7a' and 7b,7b' so that the areas of impact overlap one another at an appropriate flushing distance between the outlet ends of the jet pods 4 and the flushing surface of, for instance, 300 mm.
  • jet head 1 use may be made of a working pressure for the pressure water jet of 80 to 100 MPa.
  • the number of jet pods 4 ought to be at least 2, but in the drawing 4 have been indicated.
  • Diameter of the nozzle 1.91 mm.
  • the jet head is encased la in order to protect it from water and pollution from the outside, as well as to provide protection against collision with the flushing surface.
  • the water pressure hoses 5 are, as shown in figure 4, coupled to a manifold 10 in the jet head 1, which is connected to a source of pressure water (not shown) .
  • a flicker valve 11 can be connected to each of the pressure water hoses 5 before the jet pods 4.
  • a flicker valve of this kind is illustrated in figures 10a,10b, and comprises a valve housing 12 with a chamber 13 with an inlet 14 and outlet 15, aligned with one another, for coupling the jet pod 4 to the pressure water hose 5 and to the pressure water supply, respectively, e.g., the manifold 10 in the jet head 1, as shown in figure 4.
  • two pairs of aligned inlets 14 and outlets 15 are arranged so that each one can be coupled via its pressure water hose 5 to, e.g., two jet pods 4 arranged on the same pair of link plates 8a,8b.
  • a valve member 16 is rotatably mounted which, by means of a shaft journal 17 projecting from the chamber 13, can be rotated to and from the closed position between one inlet/outlet pair 14,15 and the second inlet/outlet pair 14,15.
  • the pressure water supply is hereby closed to one jet pod 4 and the second jet pod 4, respectively, by a periodic backwards and forwards movement of the shaft journal 17 which, for instance, is connected to a pressure cylinder 17b via a crank arm 17a .
  • the valve body When the valve body is rotated backwards and forwards between said pair of aligned inlet 14 and outlet 15 and opens for and closes for, respectively, the through flow of pressure water, the respective jet pod 4 will have its water supply cut whilst the other jet pod 4 will receive a full supply of pressure water.
  • counter pressure will arise in the supply of pressure water and a relief valve in a high pressure water pump, not shown, will begin to function in order to obtain equilibrium pressure.
  • a bore 18 is fitted in the valve member 16, and which in the closed position of said valve member 16 extends from the inlet 14 and out through the shaft journal 17 into the open.
  • Said bore has preferably a smaller flow cross- section than inlet 14 and outlet 15 and drains out the stream of pressure water and reduces the pressure build-up in the valve chamber 13, so that said relief of the high pressure water pump does not occur, or occurs to a slight extent.
  • a flicker valve 11 of this kind can also be constructed with only one pair of inlet 14 and outlet 15, whereby the valve member 16 will only be moved to and from the closed position between said inlet and outlet 14,15 and a mean neutral position, in which the pressure water runs unimpeded through inlet 14 and outlet 15 to the pressure water hose 5 and the jet pod 4.
  • the flicker valve 11 must be placed in immediate proximity to the jet head 1 or, as shown in figure 4, in the jet head 1 between the manifold 10 and the jet pod 4. One thus obtains the least possible delay in the build-up of pressure between the flicker valve and the outlet of the jet pod 4 at the opening of the through passage of the flicker valve 11 and thereby at the supply of high pressure water to the forward end 4b of the jet pod 4 with the outlet nozzle.
  • the flicker valve 11 is driven preferably by a pressure cylinder 17b by means of a pressure medium which also preferably drives the motors 9a,9b of the eccentrics 7a,7b.
  • Said motors 9a,9b and said pressure cylinder 17b may, of course, be replaced by electric driving means.
  • the functions of the jet head 1 and its movement on the articulated crane jib and said crane jib can be controlled manually from a manoevring position on the motorized vehicle 3.
  • everything can be controlled automatically by means of distance sensors for the jet head 1 against the flushing surface and by means of a programme designed for the flushing down loose stones and particles in a tunnel vault, based on experience with regard to necessary flushing time in order to ensure flushing down of loose stone and loose particles from the flushing surface.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

L'équipement pour enlever de la surface de roches et d'autres surfaces (surfaces à nettoyer) des pierres ou d'autres matériaux au moyen de jets d'eau à haute pression, comprend une tête à buse (1) placée à l'extrémité d'un bras pouvant être guidé (2) monté sur un véhicule à moteur (3) ou un autre moyen de support, selon le domaine d'application, ladite tête à buse (1) comprenant au moins une buse (4) reliée à une conduite d'eau sous pression (5), des soupapes pour régler le débit de l'eau sous pression ainsi que, le cas échéant, des moyens de guidage automatiques. La buse (4) est reliée par deux emplacements espacés l'un de l'autre et de préférence par ses extrémités (4a, 4b), à un moyen d'entraînement (6a, 6b) faisant osciller la buse transversalement par rapport à son axe longitudinal (A) pour conférer un mouvement d'inclinaison/d'oscillation à la buse (4), de manière à déplacer le jet d'eau sous pression sur la surface à nettoyer pour la débarrasser desdites pierres et autres matériaux.
PCT/NO1993/000013 1992-01-17 1993-01-15 Equipement pour enlever de la surface de roches et d'autres surfaces, des pierres et d'autres materiaux, a l'aide de jets d'eau sous haute pression WO1993014296A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO920232 1992-01-17
NO920232A NO174401C (no) 1992-01-17 1992-01-17 Utstyr for rensking av fjell og andre flater for stein og annet materiale ved hjelp av vannstråler under höyt trykk

Publications (1)

Publication Number Publication Date
WO1993014296A1 true WO1993014296A1 (fr) 1993-07-22

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PCT/NO1993/000013 WO1993014296A1 (fr) 1992-01-17 1993-01-15 Equipement pour enlever de la surface de roches et d'autres surfaces, des pierres et d'autres materiaux, a l'aide de jets d'eau sous haute pression

Country Status (3)

Country Link
AU (1) AU3369993A (fr)
NO (1) NO174401C (fr)
WO (1) WO1993014296A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998015690A1 (fr) * 1996-10-08 1998-04-16 Aquajet Systems Holding Ab Dispositif et procede permettant de deplacer un objet
EP0985340A3 (fr) * 1998-09-03 2001-07-04 Peter Allan Richardson Machine à nettoyer
JP2013154430A (ja) * 2012-01-30 2013-08-15 Okumura Corp コンクリート壁面研掃処理方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1566631A (en) * 1976-02-21 1980-05-08 Maasberg W Processes and equipment for the treatment of surfaces
WO1982002738A1 (fr) * 1981-02-09 1982-08-19 Axel Martin Forsberg Dispositif de piquage de la roche
US4369850A (en) * 1980-07-28 1983-01-25 The Curators Of The University Of Missouri High pressure fluid jet cutting and drilling apparatus
WO1989001396A1 (fr) * 1987-08-11 1989-02-23 Ciwj Compagnie International Du Water Jet Dispositif pour decouper, forer ou egalement dresser la roche, les minerais, le beton ou similaire
EP0393689A1 (fr) * 1989-04-20 1990-10-24 Ingo R. Dipl.-Ing. Friedrichs Méthode de perfectionnement d'effet d'une tuyère engendrant un jet fluide mobile et dispositif de mise en oeuvre de cette méthode

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1566631A (en) * 1976-02-21 1980-05-08 Maasberg W Processes and equipment for the treatment of surfaces
US4369850A (en) * 1980-07-28 1983-01-25 The Curators Of The University Of Missouri High pressure fluid jet cutting and drilling apparatus
US4369850B1 (fr) * 1980-07-28 1988-07-12
US4369850B2 (en) * 1980-07-28 1989-06-06 High pressure fluid jet cutting and drilling apparatus
WO1982002738A1 (fr) * 1981-02-09 1982-08-19 Axel Martin Forsberg Dispositif de piquage de la roche
WO1989001396A1 (fr) * 1987-08-11 1989-02-23 Ciwj Compagnie International Du Water Jet Dispositif pour decouper, forer ou egalement dresser la roche, les minerais, le beton ou similaire
EP0393689A1 (fr) * 1989-04-20 1990-10-24 Ingo R. Dipl.-Ing. Friedrichs Méthode de perfectionnement d'effet d'une tuyère engendrant un jet fluide mobile et dispositif de mise en oeuvre de cette méthode

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT'S ABSTRACT, No. H1864 A/37, week 7837; & SU,A,542 400 (DONETS UNIV), 6 February 1978. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998015690A1 (fr) * 1996-10-08 1998-04-16 Aquajet Systems Holding Ab Dispositif et procede permettant de deplacer un objet
US6179519B1 (en) 1996-10-08 2001-01-30 Aquajet Systems Holdings Ab Device and a method for moving an object
EP0985340A3 (fr) * 1998-09-03 2001-07-04 Peter Allan Richardson Machine à nettoyer
JP2013154430A (ja) * 2012-01-30 2013-08-15 Okumura Corp コンクリート壁面研掃処理方法

Also Published As

Publication number Publication date
NO174401C (no) 1994-04-27
NO920232L (no) 1993-07-19
NO174401B (no) 1994-01-17
AU3369993A (en) 1993-08-03
NO920232D0 (no) 1992-01-17

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