EP1299213B1 - Appareil hydraulique a percussions - Google Patents

Appareil hydraulique a percussions Download PDF

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Publication number
EP1299213B1
EP1299213B1 EP01954069A EP01954069A EP1299213B1 EP 1299213 B1 EP1299213 B1 EP 1299213B1 EP 01954069 A EP01954069 A EP 01954069A EP 01954069 A EP01954069 A EP 01954069A EP 1299213 B1 EP1299213 B1 EP 1299213B1
Authority
EP
European Patent Office
Prior art keywords
piston
distribution box
distributor
chamber
channel
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.)
Expired - Lifetime
Application number
EP01954069A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1299213A1 (fr
Inventor
Bernard Piras
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.)
Montabert SAS
Original Assignee
Montabert SAS
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 Montabert SAS filed Critical Montabert SAS
Publication of EP1299213A1 publication Critical patent/EP1299213A1/fr
Application granted granted Critical
Publication of EP1299213B1 publication Critical patent/EP1299213B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/16—Valve arrangements therefor
    • B25D9/20—Valve arrangements therefor involving a tubular-type slide valve

Definitions

  • the present invention relates to a hydraulic percussion apparatus.
  • a percussion apparatus comprises a body containing a cylinder, inside which is slidably mounted a striking piston of a tool, hydraulically driven alternately by an incompressible fluid.
  • the movement of the piston is controlled by a distributor which opens and closes hydraulic circuits putting some chambers located on either side of the piston successively in communication with a high pressure circuit and a low pressure circuit to create this sequential alternating movement.
  • the document US 4,230,019 relates to a percussion apparatus comprising a plurality of bodies, respectively a main body including the striking piston, a body containing the dispensing system and a body containing an energy accumulator.
  • the arrangement of these different bodies is such that the power circuits for passing the flow rates of fluid necessary for the activation of the striking movement, and the control circuits of smaller dimensions, which ensure the movement of the distributor, are arranged both in the body containing the cylinder and in the body containing the dispenser.
  • control channels are formed both in the body containing the cylinder and in the body containing the distributor, which requires the realization of a seal between these two bodies.
  • the dispensing body is positioned laterally, so that it must be securely held due to the accelerations it undergoes resulting shock waves.
  • the document FR 2 045 289 describes an apparatus according to the preamble of claim 1.
  • the object of the invention is to provide a hydraulic percussion device, the control system of the dispenser is made in a simple manner, and with a small footprint.
  • the connecting ducts of the control chamber, with the high pressure and low pressure circuits, are formed in the distribution box.
  • This hydraulic percussion device has a compact structure, since there is an overlap of the distribution box and the cylinder containing the piston.
  • the structure of this apparatus is simplified, insofar as the control and control circuits of the distribution assembly are independent of the cylinder body and are formed in the distribution box. Thus, only the power circuits necessary for the movement of the striking piston are machined in the cylinder body. It may be noted that the same distribution system can equip different types of percussion apparatus.
  • the upper end of the piston has a central and axial bore in which is engaged a central axial cylindrical bearing belonging to the distribution box, the bore of the piston having a recess. annular delimiting with the cylindrical scope of the distribution box, the control chamber.
  • the upper end of the piston comprises a central and axial cylindrical bearing which is engaged in a central and axial bore formed in the distribution box, the cylindrical bearing surface of the piston comprising an annular groove delimiting with the central bore of the distribution box, the pilot chamber.
  • the apparatus comprises a lower chamber formed between the lower end of the distribution box and the piston, permanently connected to the low pressure network by a channel, and a channel which, opening radially in the boring ensuring the sliding of the piston relative to the distribution box, above the communication channel of the control chamber and the control chamber of the distributor, is permanently connected to the high pressure network, the movement of the piston relative to the distribution box successively putting the control chamber into communication with the lower chamber connected to the high pressure network and the channel connected to the low pressure network.
  • the supply channel of the lower chamber, as well as the channel connected to the low pressure network, are formed in the distribution box.
  • the frequency of the device can be chosen according to the choice of surfaces of the different sections. This choice determines, for a strike piston stroke, the cubic capacity of the apparatus and consequently its striking frequency for a given feed rate.
  • the reciprocating movement of the piston is obtained by communicating the driving chamber 6 alternately with the high-pressure network 9 and the low-pressure network 12, so that the resultant of the hydraulic forces applied to the piston 1 is exerted successively in one direction and in one direction. the other.
  • the bore of the piston comprises a recess or annular groove delimiting with the cylindrical bearing surface of the distribution box an annular pilot chamber 13.
  • a control chamber 14 of the movement of the distributor 15 via a channel 16 and the control chamber 13 either with the high-pressure network 9 or with the low-pressure network 12.
  • the cylindrical bearing surface of the distribution box 3 comprises a channel 17 for placing the lower chamber 10 in communication with the low pressure network 12, as well as a channel 18 opening radially into the bore 4, above of the control chamber 13, connected to the high pressure network 9.
  • the distributor 15 is driven by a downward movement when the control chamber 14 is connected to the low pressure circuit 12 and a rising movement when the latter communicates with the high pressure circuit 9.
  • the reciprocating movement of the distributor 15 is obtained by communicating the control chamber 14 alternately with the high pressure circuit 9 and the low pressure circuit 12, so that, depending on the surfaces chosen for the sections of the three chambers 14, 19, 22, the resultant force applied to the distributor is exerted successively in one direction and the other.
  • the initial state is that shown in Figure 1, wherein the distributor 15 is in the low position and the piston 1 is in the low position.
  • the control chamber 14 being connected to the low pressure circuit via the channel 16, the pilot chamber 13, lower chamber 10 and channel 17.
  • FIG. 5 represents an alternative embodiment of this apparatus, in which the same elements are designated by the same references as before.
  • the overlap of the distribution box 3 and the striking piston 1 results from the fact that the striking piston comprises a central cylindrical surface 34 which is engaged in a central bore 35 formed in the distribution box 3.
  • the range cylindrical 34 has an annular groove delimiting the control chamber 36.
  • the lower chamber 10 is then no longer a central chamber but an annular chamber.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Fish Paste Products (AREA)
EP01954069A 2000-07-13 2001-07-10 Appareil hydraulique a percussions Expired - Lifetime EP1299213B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0009259 2000-07-13
FR0009259A FR2811601B1 (fr) 2000-07-13 2000-07-13 Appareil hydraulique a percussions
PCT/FR2001/002228 WO2002006014A1 (fr) 2000-07-13 2001-07-10 Appareil hydraulique a percussions

Publications (2)

Publication Number Publication Date
EP1299213A1 EP1299213A1 (fr) 2003-04-09
EP1299213B1 true EP1299213B1 (fr) 2007-10-24

Family

ID=8852518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01954069A Expired - Lifetime EP1299213B1 (fr) 2000-07-13 2001-07-10 Appareil hydraulique a percussions

Country Status (18)

Country Link
US (1) US6901842B2 (da)
EP (1) EP1299213B1 (da)
JP (1) JP2004504168A (da)
KR (1) KR100753929B1 (da)
CN (1) CN100436073C (da)
AT (1) ATE376482T1 (da)
AU (2) AU7642401A (da)
BR (1) BR0112347A (da)
CA (1) CA2415359A1 (da)
DE (1) DE60131081T2 (da)
DK (1) DK1299213T3 (da)
ES (1) ES2295186T3 (da)
FR (1) FR2811601B1 (da)
IL (2) IL153493A0 (da)
NO (1) NO318421B1 (da)
PT (1) PT1299213E (da)
WO (1) WO2002006014A1 (da)
ZA (1) ZA200209846B (da)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE527762C2 (sv) * 2004-10-14 2006-05-30 Atlas Copco Rock Drills Ab Slagverk
SE529615C2 (sv) * 2006-02-20 2007-10-09 Atlas Copco Rock Drills Ab Slagverk och bergborrmaskin samt förfarande för att styra slagkolvens slaglängd
CN100436751C (zh) * 2006-05-25 2008-11-26 中国海洋石油总公司 水下液压冲击铲
FR2916377B1 (fr) * 2007-05-25 2009-07-24 Montabert Soc Par Actions Simp Procede de protection contre les suralimentations en debit d'un appareil a percussions mu par un fluide incompressible sous pression, et appareil pour la mise en oeuvre de ce procede.
SK932007A3 (sk) 2007-07-09 2009-02-05 Konek, S. R. O. Hydraulické rozrušovacie kladivo
US9656377B2 (en) * 2014-08-08 2017-05-23 Caterpillar Inc. Self-charging hydraulic hammer
US12358113B2 (en) 2023-02-01 2025-07-15 Caterpillar Inc. Hydraulic hammer internal damping
CN118774580B (zh) * 2024-08-28 2025-03-14 启东市玖盛液压设备有限公司 一种液压旋转冲击设备的液压动力分配方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA941264A (en) * 1970-04-03 1974-02-05 Etablissements Montabert Dispositif de commande du distributeur d'un appareil a percussions mu par un liquide sous pression
JPS5217266B2 (da) * 1971-10-27 1977-05-14
FI50307C (fi) * 1974-04-20 1976-02-10 Xandor Ag Hydraulisesti käytetty iskulaite
FR2369908A1 (fr) * 1976-11-08 1978-06-02 Montabert Roger Appareil a percussions hydraulique
ES464093A1 (es) * 1977-11-12 1978-12-16 Luis Miguel Castejon Castan Perfeccionamientos en los sistemas de fluidos alternantes y aparato para su realizacion.
JPS597570A (ja) * 1982-07-05 1984-01-14 北越工業株式会社 油圧作動衝撃工具
DE3400302A1 (de) * 1984-01-03 1985-08-29 Mannesmann AG, 4000 Düsseldorf Hydraulisch betaetigte schlagvorrichtung
JPH03208571A (ja) * 1990-01-12 1991-09-11 Maruzen Kogyo Kk 油圧ピックハンマ
FR2676953B1 (fr) * 1991-05-30 1993-08-20 Montabert Ets Appareil hydraulique a percussions.
FR2727891B1 (fr) * 1994-12-08 1997-01-24 Montabert Ets Procede et appareil pour la regulation de la course de frappe d'un appareil a percussion mu par un fluide incompressible sous pression
FI107891B (fi) * 1998-03-30 2001-10-31 Sandvik Tamrock Oy Painenestekäyttöinen iskulaite

Also Published As

Publication number Publication date
KR20030031954A (ko) 2003-04-23
NO318421B1 (no) 2005-03-14
WO2002006014A1 (fr) 2002-01-24
ATE376482T1 (de) 2007-11-15
IL153493A (en) 2006-07-05
FR2811601A1 (fr) 2002-01-18
AU7642401A (en) 2002-01-30
PT1299213E (pt) 2007-11-26
EP1299213A1 (fr) 2003-04-09
ZA200209846B (en) 2003-10-03
KR100753929B1 (ko) 2007-08-31
US20040050243A1 (en) 2004-03-18
AU2001276424B2 (en) 2006-02-02
NO20030125D0 (no) 2003-01-10
IL153493A0 (en) 2003-07-06
ES2295186T3 (es) 2008-04-16
CN1441715A (zh) 2003-09-10
NO20030125L (no) 2003-03-04
BR0112347A (pt) 2003-07-01
FR2811601B1 (fr) 2002-10-11
CN100436073C (zh) 2008-11-26
CA2415359A1 (fr) 2002-01-24
US6901842B2 (en) 2005-06-07
DE60131081T2 (de) 2008-07-24
DE60131081D1 (de) 2007-12-06
DK1299213T3 (da) 2008-03-03
JP2004504168A (ja) 2004-02-12

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