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WO2003092962A1 - Pointerolle de marteau comprenant un jet d'eau - Google Patents

Pointerolle de marteau comprenant un jet d'eau Download PDF

Info

Publication number
WO2003092962A1
WO2003092962A1 PCT/AU2003/000533 AU0300533W WO03092962A1 WO 2003092962 A1 WO2003092962 A1 WO 2003092962A1 AU 0300533 W AU0300533 W AU 0300533W WO 03092962 A1 WO03092962 A1 WO 03092962A1
Authority
WO
WIPO (PCT)
Prior art keywords
moil
hammer
water jet
pressure water
mechanical impulse
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/AU2003/000533
Other languages
English (en)
Inventor
Alan John Russell
Peter John Rubie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RME Holdings Pty Ltd
Original Assignee
RME Holdings Pty Ltd
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 RME Holdings Pty Ltd filed Critical RME Holdings Pty Ltd
Priority to AU2003225325A priority Critical patent/AU2003225325A1/en
Publication of WO2003092962A1 publication Critical patent/WO2003092962A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/26—Lubricating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/02—Percussive tool bits
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C37/00—Other methods or devices for dislodging with or without loading
    • E21C37/22—Hand tools or hand-held power-operated tools specially adapted for dislodging minerals

Definitions

  • This invention relates to a moil for use in a mechanical impulse hammer, and in particular to such a moil comprising a means for delivery of a high pressure water jet exiting at or near the impact end of the moil.
  • Hydraulic and pneumatic powered rock breakers or jack-hammers are used in mining and industrial applications.
  • Such hydraulic or pneumatic hammers typically comprise a housing having a moil mounted at the forward end, and a hydraulic piston assembly reciprocally movable along the hammer axis between a striking position at which the piston assembly strikes the moil (impact delivery member), and a retracted position remote from the moil.
  • jack-hammers Whilst in many instances large jack-hammers may be used in mining and industrial applications, they are sometimes not suitable for applications where space limitations occur. Such space limitations sometimes exist inside industrial vessels such as used at alumina refineries and the like, where descaling of their interiors is necessary. In order to descale such vessels it is difficult and cumbersome to use many of the known hydraulic or pneumatic powered jack-hammers. As such, descaling is sometimes attempted by use of a high pressure (20,000 psi) water jet apparatus.
  • the present invention seeks to overcome disadvantages of large jack-hammers by providing a moil for use in a mechanical impulse hammer which also includes means for delivery of a high pressure water jet.
  • a combined tool may be very compact and fit into spaces too small for conventional large hydraulic jack- hammers, yet provide the operator with the choice of either a mechanical impulse hammer action or that of a water jet for descaling purposes.
  • the present invention consists in a moil for use in a mechanical impulse hammer, said moil supported within a hammer housing for reciprocal movement along a hammer axis, characterised in that said moil comprises means for delivery of a high-pressure water jet exiting at or near the impact end of said moil.
  • said means for delivery of a high-pressure water jet comprises an elongate passageway longitudinally extending along at least a portion of said moil.
  • said elongate passageway is coaxial with said hammer axis.
  • said elongate passageway is axially offset from said hammer axis.
  • the reciprocal movement of said moil is hydraulically actuated by hydraulic oil power pack and said means for delivery of a high-pressure water jet is connected to a remote high- pressure water supply.
  • the reciprocal movement of said moil is hydraulically actuated by a high pressure water supply and said means for delivery of a high- pressure water jet is connected to said high- pressure water supply.
  • said water jet exits a nozzle mounted on or integral with said moil.
  • said water jet exits a nozzle fixed relative to said hammer and housed within said moil.
  • said water jet exits a nozzle fixed relative to said hammer and located at or near the impact end of said moil.
  • the present invention consists in a mechanical impulse hammer comprising a moil supported within a hammer housing for reciprocal movement along a hammer axis, characterised in that said moil comprises means for delivery of a high pressure water jet exiting at or near the impact end of said moil.
  • Fig. 1 is a side elevation view of a first embodiment of a jack-hammer having a moil in accordance with the present invention.
  • Fig. 2 is a sectional elevation view through A-A of Fig. 1.
  • Fig. 3 is an enlarged detail view of the high pressure water supply entry into the moil shown in circle D of Fig. 2.
  • Fig. 4 is an enlarged detail of the high pressure water jet nozzle and impact end on the moil shown in circle C of Fig. 2.
  • Fig. 5 is an enlarged inverted plan of the impact end of the moil shown in Fig. 4.
  • Fig. 6 is a side elevation view of a second embodiment of a jack-hammer having a moil in accordance with the present invention.
  • Fig. 7 is a sectional elevation view through B-B of Fig. 6.
  • Fig. 8 is an enlarged detail of the high-pressure water supply entry into the moil shown in circle E of Fig. 7.
  • Fig. 9 is an enlarged detail of the high-pressure water jet nozzle and impact end on the moil shown in circle F of Fig. 7.
  • Fig. 10 is an enlarged inverted plan of the impact end of the moil shown in Fig. 9.
  • Fig. 11 is a cross sectional view of a third embodiment of a jack-hammer having a moil in accordance with the present invention.
  • Fig. 12 is an enlarged cross sectional view of the nozzle fitted to the moil shown in Fig. 11.
  • Fig. 13 is a cross sectional view of a fourth embodiment of a jack-hammer having a moil in accordance with the present invention.
  • Fig. 14 is a cross sectional view of a fifth embodiment of a jack-hammer having a moil in accordance with the present invention.
  • Figs. 1 to 5 depict a first embodiment of a hydraulically operated mechanical impulse jack-hammer 1 having a housing 2 and moil 3.
  • the jack-hammer moil 3 is supported within housing 2 for reciprocal movement along hammer axis L.
  • Moil 3 has an impact end 8 adapted to engage with a work surface not shown.
  • a high-pressure water supply hose 4 is connected to a water delivery jacket 5 which is removably and sealingly engaged around moil 3.
  • the water supply hose 4 is connected to water jacket 5 via a port 9, which leads to an annular cavity 10 which surrounds moil 3.
  • Water jacket 5 is provided with seals 11 to prevent water escaping from cavity 10.
  • the water supply hose 4 is connected to a not shown remote high-pressure (20,000 psi) water supply.
  • High-pressure water delivered via supply hose 4 is able to travel along moil 3 via an elongate passageway 6 that terminates at a nozzle 7 at the impact end 8 of moil 3.
  • both the elongate passageway 6 and the nozzle 7 are offset relative to longitudinal axis L of jack-hammer 1.
  • Figures 6-10 depict a second embodiment of a jack-hammer 1 and moil 3 with high water pressure delivery similar to the first embodiment, however in this second embodiment the elongate passageway 6 and nozzle 7 are axially aligned with hammer axis L
  • Figures 11 and 12 depict a third embodiment of a jack-hammer 1 and moil 3 with high pressure water hose 4 fitted directly to moil 3.
  • Hose 4 delivers water to elongate passageway 6 that terminates at nozzle 7.
  • nozzle 7 is removably mounted to the free end of moil 3.
  • the tube 4 reciprocates as moil 3 reciprocates.
  • Figure 13 depicts a fourth embodiment of a jack-hammer 1 and moil 3 with a high pressure water tube 4a delivering water to passageway 6a in moil 3.
  • tube 4a is fixed relative to jack-hammer housing 2, and nozzle 7 is removably fitted to free end of tube 4a, within passageway 6a of moil 3.
  • passageway 6a is axially offset relative to hammer axis L.
  • Tube 4a and nozzle 7 remain fixed relative to jack-hammer 2 as moil 3 reciprocates.
  • Figure 14 depicts a fifth embodiment in which a tube 4b and nozzle 7 are fixed relative to jack-hammer housing 2 as moil 3 reciprocates. In this arrangement the tube 4b runs parallel to hammer axis L, alongside the reciprocating moil 3. The nozzle 7 is located near the free impact end of moil 3.
  • jack-hammer 1 that imparts a reciprocal movement to moil 3 by a conventional hydraulic power pack
  • the jack-hammer may utilise a high-pressure water supply to impart reciprocal movement to moil 3, as well as to deliver a jet of a high pressure water through nozzle 7.
  • the present invention is not limited to a water pressure of 20,000 psi, and may in other embodiments be used at water pressures greater and lower than 20,000 psi.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

L'invention concerne une pointerolle (3) destinée à être utilisée dans un marteau mécanique à impulsions (1). Cette pointerolle (3) est contenue au sein d'un logement de marteau, et est destinée à effectuer un mouvement de va-et-vient le long de l'axe du marteau. Ladite pointerolle (3) comprend un moyen permettant de distribuer un jet d'eau haute pression émis au niveau ou à proximité de l'extrémité (8) d'impact de ladite pointerolle (3). Ce jet d'eau sort d'un ajutage (7) monté sur ladite pointerolle (3), ou en variante, fixé au logement de marteau.
PCT/AU2003/000533 2002-05-06 2003-05-06 Pointerolle de marteau comprenant un jet d'eau Ceased WO2003092962A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003225325A AU2003225325A1 (en) 2002-05-06 2003-05-06 Hammer moil with water jet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPS2155 2002-05-06
AUPS2155A AUPS215502A0 (en) 2002-05-06 2002-05-06 Hammer moil with water jet

Publications (1)

Publication Number Publication Date
WO2003092962A1 true WO2003092962A1 (fr) 2003-11-13

Family

ID=3835728

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2003/000533 Ceased WO2003092962A1 (fr) 2002-05-06 2003-05-06 Pointerolle de marteau comprenant un jet d'eau

Country Status (2)

Country Link
AU (1) AUPS215502A0 (fr)
WO (1) WO2003092962A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2015912A (en) * 1978-03-11 1979-09-19 Salzgitter Maschinen Ag Rock working tool
DE3037033A1 (de) * 1979-10-19 1981-04-30 Dravo Corp., Pittsburgh, Pa. Steinmeissel mit motorantrieb und druckwasserunterstuetzung
DE3214165A1 (de) * 1981-09-19 1983-03-31 Anderson Strathclyde Ltd., High Wycombe, Buckinghamshire Gesteinsschneidmeissel und vorrichtung zum festhalten eines mit einem schaft versehenen gesteinsschneidmeissels
US4736805A (en) * 1986-07-21 1988-04-12 Nlb Corp. Hydraulic breaker with high pressure water attachment
DE4020773A1 (de) * 1990-06-29 1992-01-02 Hilti Ag Bohr- und meisselhammer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2015912A (en) * 1978-03-11 1979-09-19 Salzgitter Maschinen Ag Rock working tool
DE3037033A1 (de) * 1979-10-19 1981-04-30 Dravo Corp., Pittsburgh, Pa. Steinmeissel mit motorantrieb und druckwasserunterstuetzung
DE3214165A1 (de) * 1981-09-19 1983-03-31 Anderson Strathclyde Ltd., High Wycombe, Buckinghamshire Gesteinsschneidmeissel und vorrichtung zum festhalten eines mit einem schaft versehenen gesteinsschneidmeissels
US4736805A (en) * 1986-07-21 1988-04-12 Nlb Corp. Hydraulic breaker with high pressure water attachment
DE4020773A1 (de) * 1990-06-29 1992-01-02 Hilti Ag Bohr- und meisselhammer

Also Published As

Publication number Publication date
AUPS215502A0 (en) 2002-06-06

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