EP0214064A1 - Verfahren und Vorrichtung zum Steuern der Bewegung des Schlagkolbens einer von einem nichtzusammendrückbaren Fluidum angetriebenen Schlagvorrichtung - Google Patents

Verfahren und Vorrichtung zum Steuern der Bewegung des Schlagkolbens einer von einem nichtzusammendrückbaren Fluidum angetriebenen Schlagvorrichtung Download PDF

Info

Publication number
EP0214064A1
EP0214064A1 EP86420181A EP86420181A EP0214064A1 EP 0214064 A1 EP0214064 A1 EP 0214064A1 EP 86420181 A EP86420181 A EP 86420181A EP 86420181 A EP86420181 A EP 86420181A EP 0214064 A1 EP0214064 A1 EP 0214064A1
Authority
EP
European Patent Office
Prior art keywords
piston
channel
pressure
drawer
fluid
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.)
Granted
Application number
EP86420181A
Other languages
English (en)
French (fr)
Other versions
EP0214064B1 (de
Inventor
Aimé Vénot
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
Priority claimed from FR8511346A external-priority patent/FR2584968B1/fr
Application filed by Montabert SAS filed Critical Montabert SAS
Priority to AT86420181T priority Critical patent/ATE55080T1/de
Publication of EP0214064A1 publication Critical patent/EP0214064A1/de
Application granted granted Critical
Publication of EP0214064B1 publication Critical patent/EP0214064B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B25D9/06—Means for driving the impulse member
    • B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure
    • 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
    • B25D9/26—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof

Definitions

  • the subject of the present invention is a method for controlling the movement of the striking piston of a percussion device driven by an incompressible fluid under pressure, and an apparatus for implementing this method.
  • Percussion instruments driven by an incompressible fluid under pressure are supplied in such a way that the result of the hydraulic forces applied successively on the striking piston alternately displaces the latter in one direction then in the other.
  • this initial compression wave arrives in a soft ground, it will on the contrary be strongly absorbed by this one.
  • the piston will be assigned an initial speed in the same direction as the tool and the value of which depends on the same parameters as above.
  • Some devices are equipped with a regulator allowing the supply pressure and consequently the impact speed of the piston to be adjusted according to the hardness of the ground and the nature of the work to be carried out.
  • Other devices are equipped with a distributor actuated hydraulically in both directions and ensuring the alternation of the hydraulic forces applied to the piston.
  • these control devices are definitively adjusted according to the type of work envisaged for the device, without it being possible to obtain an automatic adjustment according to the working conditions.
  • French patent 2,375,008 relates to a device for adjusting the striking frequency by pneumatic or electro-hydraulic remote control.
  • This remote control acts on a drawer selecting a channel from a series of channels opening into a series of annular grooves formed in the working cylinder, the selected channel being able to be connected to the fluid supply network.
  • This device requiring manual intervention to adjust the striking frequency, cannot, in any case, react and adapt automatically to the hardness of the ground.
  • the control method which it relates to intended for a percussion device driven by an incompressible fluid under pressure, supplied in such a way that the result of the hydraulic forces is applied successively in one direction and in the other, and equipped with hydraulically controllable regulation devices capable of varying percussion parameters, such as the impact speed and / or the impact frequency of the piston, is characterized in that it consists in measuring, during each impact of the piston on the tool, the residence time of the piston near its theoretical striking position, then to act as a function of this time on the devices for regulating the impact parameters.
  • An apparatus for implementing this method comprises a channel opening into the interior of the cylinder containing the striking piston and communicating with a primary circuit connected to the devices for controlling the percussion parameters, while a groove formed in the piston allows, at each impact and during the residence time of the piston near its theoretical striking position, to establish a momentary circulation of fluid between the primary circuit and a secondary circuit.
  • the hydraulic information provided to the regulation devices allows them to adapt the operating parameters to the nature of the soil encountered by the tool.
  • the device represented in FIG. 1 relates to a percussion device of the type described in French patent 81 14043 in the name of the Applicant, and comprising a piston (1) sliding in a body (2) comprising a cavity in the form of cylinder, in which a distributor (3) is concentrically mounted.
  • This device is equipped in a known manner with a regulator making it possible to adjust the supply pressure and consequently the impact speed of the piston as a function of the hardness of the ground and the nature of the work to be performed.
  • This regulator comprises a drawer (4) in balance under the force of a spring (5) and under the pressure of the supply fluid supplied by a channel (6) and a nozzle (7), and acting on the surface (8 ) at the end of the drawer.
  • a chamber (11) generally connected to the low pressure return circuit (50) of the device is located on the same side of the drawer as the surface (8).
  • the drawer (4) defines with the walls of the cavity in which it is mounted, a throttled passage forming a nozzle (9) ensuring the passage of the fluid discharged through the channel (10) by the piston, during the return stroke thereof.
  • the nozzle (9) creates a back pressure in the channel (10), during the return stroke, such that the supply pressure acting on the section (8) rises to a value sufficient to compensate the action of the spring (5).
  • the supply pressure is adjusted by adjusting the setting of the spring (5).
  • a channel (12) is formed in the body (2) which is equipped with a nozzle (14), and which opens into the bearing surface (13) of the cylinder used for moving the piston.
  • This channel (12) is placed in communication with the fluid at its supply pressure, by means of a groove (15) which comprises the piston (1).
  • Figure 2 corresponds to a variant of the device of Figure 1 in which the nozzle (14) mounted on the channel (12) is replaced by a nozzle (14 ') disposed on a channel (56) for supplying the fluid under pressure.
  • the primary circuit to which the channel (12) is connected comprises a slide (17) slidably mounted inside a bore (20) delimiting on one side a chamber (51), hereinafter called the buffer chamber, communicating with the channel (12) and a chamber (52), containing a spring (18), connected to the low pressure return circuit (50) by a channel (21).
  • the channel (12) and the buffer chamber (51) are in communication with the control chamber (11) of the pressurized fluid supply regulator.
  • the pressure inside the pilot chamber (11) being itself low, the slide (4) tends to close the nozzle (9) which increases the back pressure in the channel (10) and consequently increases the supply pressure and the impact speed of the piston. If the ground encountered by the tool becomes softer, the quantity of fluid injected per cycle in the channel (12) increases, which causes an increase. pressure on the one hand in the buffer chamber (51) and on the other hand in the pilot chamber (11). This increase in pressure modifies the balance of the slide (4) in a direction of opening of the nozzle (9) which has the effect of reducing the existing back pressure in the channel (10) and therefore of reducing the pressure of fluid supply to the device and the impact speed of the piston.
  • the large dimension of the drawer (17) allows it to play the role of accumulator and to obtain a stabilized pressure in the buffer chamber (51), and therefore in the pilot chamber (11).
  • the drawer (17) will be in equilibrium for a pressure in the chamber (51), such that the continuous flow that this pressure allows to pass through the chamber (52) by a nozzle (19) is equal to the pulsed flow injected by the nozzle (14) in the channel (12).
  • FIG. 3 represents an apparatus in which the same members are designated by the same references as above.
  • This device operates according to a known principle, where a distributor (30) actuated hydraulically in both directions ensures the alternation of the hydraulic forces applied to the striking piston.
  • the distributor (30) is controlled by an annular control section (33) which, when under pressure, displaces the distributor by putting the channel (31) opening out at communication. above the piston head with the high pressure fluid supply circuit.
  • This chamber (33) is supplied by a channel (34) opening into an annular groove (40) of a drawer (35) mounted in a bore (20).
  • This groove (40) can be placed in communication, depending on the position of the drawer (35) with one or more of a series of channels (36 - 39) opening into the cylinder in which the piston is slidably mounted.
  • the function of the drawer (35) is to select the active control channel (36 - 39) which, supplied from the annular chamber (32) delimited by a groove (55) of the piston, will put under pressure the piloting section (33) and will trigger the start of the piston stroke.
  • the supply of pressurized fluid to the upper chamber of the piston will intervene more or less early, making it possible to vary the stroke of the piston and consequently the frequency of hit.
  • the control of the position of the drawer (35) is obtained as in the previous embodiments via the channel (12) which supplies pressurized fluid to the buffer chamber (51).
  • Figure 4 shows a variant of this device, in which it is equipped with both a regulator and a distributor.
  • the pressure created in the chamber (51) is used on the one hand to move the drawer (35) to select the strike stroke and to control the drawer (4) of the supply pressure regulator, which modifies the back pressure of return of the device, and consequently the supply pressure itself and the typing speed.
  • FIG. 5 represents an alternative embodiment of an apparatus equipped with a regulator, in which the channel (12) equipped with a nozzle (14) is capable of being placed in communication with the low pressure network (50) by through a channel (61) connected to this network and a groove (63) formed in the piston, when the groove (63) simultaneously discovers the orifice (80) of the channel (12) and the orifice (81) of the channel (61), when the piston is in its theoretical striking position.
  • the channel (12) communicates as before with the buffer chamber (51) which, in this case, contains the spring (18) acting on the slide (17) while the rear chamber (52) located on the other side of this drawer is continuously supplied with pressurized fluid by a pressure regulator or nozzle (71) itself in relation to the high pressure network of the device by a channel (58) or (59).
  • a nozzle (19) connects the chambers (51) and (52), and the chamber (51) is in relation to the control chamber of the slide valve (65) of the regulator via a channel (76).
  • the pressurized fluid from the chamber (52) passes through the nozzle (19) into the chamber (51) and must be evacuated through the channel. (12) and the groove (63) to the low pressure channel (61) and the low pressure network (50) via the nozzle (14) mounted on the channel (12) or a nozzle (14 ') mounted on the channel (61).
  • the slide (17) will be in equilibrium for a pressure in the chamber (51), such that the pulsed flow that this pressure allows to pass during each cycle in the nozzle (14) or (14 ') is equal to the flow supplied by the nozzle (71).
  • the slide valve (65) of the regulator delimits with its bore a chamber (8) connected to the supply pressure, a chamber (11) connected to the return circuit by the channel (64) and a pilot chamber (60 ) antagonist, connected to the buffer chamber (51) by the channel (76).
  • a pilot chamber (60 ) antagonist connected to the buffer chamber (51) by the channel (76).
  • This closure increases the back pressure in the channel (10) and consequently increases the supply pressure and the impact speed of the piston.
  • FIG. 6 represents an alternative embodiment of the apparatus of FIG. 5 in which the channel (12) and the buffer chamber (51) are constantly supplied with pressurized fluid by a nozzle itself supplied with fluid by a channel ( 58) or (59).
  • the chamber (52) delimited in part by the slide (66) is connected to the return circuit of the device by a channel (21) while a channel (22) also connected to the low pressure network opens into the bore in which is mounted the drawer (66), and is capable of putting the buffer chamber (51) in relation to the low pressure network when the pressure in this chamber exceeds a predetermined value.
  • the pressure which builds up in the chamber (51) is such that the quantity of fluid per cycle discharged by the nozzle (14) towards the low pressure network by the groove (63) of the piston is equal to the quantity of fluid per cycle entering the chamber (51) through the flow regulator or nozzle (78).
  • the quantity of fluid discharged by the nozzle (14) tends to increase, taking into account the longer residence time of the piston in the impact zone.
  • the pressure prevailing in the chamber (51) tends to decrease, as well as that prevailing in the chamber (60) which modifies the equilibrium position of the drawer (65) in a direction of opening of the nozzle ( 9).
  • This opening of the nozzle (9) causes a decrease in the back pressure and consequently a decrease in the supply pressure of the device and the impact speed of the piston.
  • FIG. 7 represents an alternative embodiment of the apparatus of FIG. 6, in which the buffer chamber (51) is momentarily supplied by a nozzle (78) itself supplied at the supply pressure by a channel ( 58) or (59).
  • the nozzle (78) is mounted on a channel (79) opening into the cylinder in which the piston (1) moves on the side opposite the channel (61) relative to the channel (12).
  • the height of the groove (63) is greater than the distance between the channel (12) and the channel (79) on the one hand, and the channel (12) and the channel (61) on the other part, but less than the distance between the channel (79) and the channel (61).
  • the piston In practice when the piston is in the position shown in FIG. 7, it places the channels (79) and (12) in communication and supplies the chamber (51) with pressurized fluid. When the movement of the piston continues, this communication is cut off and the groove (63) puts in communication, when the piston arrives at its theoretical striking position, the channel (12) with the low pressure network, via the channel (61).
  • the pressure in the chamber (51) is such that it establishes the equality of the quantity of fluid entering this chamber when the groove (63) puts the channel (12) and the channel (79) into communication with the quantity of fluid leaving this chamber when the groove (63) connects the channel (12) and the channel (61). As a result, the pressure of the chamber (51) depends on the hardness of the ground.
  • the primary circuit to which the channel (12) is connected comprises a buffer chamber or pilot chamber (51), formed in a bore (82) extended by a bore (20) of smaller cross section.
  • a drawer (87) Inside the bores (82) and (20) is slidably mounted a drawer (87), comprising two parts of different sections, which partly delimits the chamber (51), the end of the cavity opposite the chamber ( 51) being constituted by a chamber (52) connected to the low pressure return circuit of the device.
  • a peripheral groove (40) capable of being placed in communication with one or more of a series of channels (36-39) opening into the cylinder in which the piston (13) is slidably mounted, and an annular chamber (84) supplied by a channel (83) with pressurized fluid.
  • the annular chamber (84) being formed in the bore (82) of large section, the force exerted by the fluid under pressure on the drawer (87) tends to move the latter in a direction of reduction of the volume of the chamber ( 51).
  • the chamber (51) also communicates via a channel (86) with the low pressure return circuit, with mounting on the channel (86) of a member (85) allowing the regulated flow of the liquid from the chamber (51) to the low pressure circuit (50).
  • This regulating member (85) is constituted by a positive displacement pump actuated in synchronism with the striking piston (1).
  • the peripheral groove (40), formed in the drawer (87), also communicates, as indicated in the main patent, via a channel (34) with a pilot chamber (33) of the control distributor (30) of the device.
  • the drawer (87) has a stable position when the quantity of fluid extracted, per cycle, from the chamber (51) by the member (85), is equal to the quantity of fluid injected, per cycle, into the chamber (51 ).
  • the time of stay of the piston in contact with the tool increases, as does the time of supply of pressurized fluid to the chamber (51) through the channel (12).
  • the quantity of fluid supplying the chamber (51) being greater than that evacuated by the member (85), the drawer (87) moves in a direction of increase in the volume of the chamber (51), the displacement of this drawer resulting in an action on the distributor (30) which will reduce the striking stroke of the piston to find a new equilibrium position of the drawer (87), such that the impact speed is appropriate to the hardness of the ground.
  • the balance of the drawer is obtained without spring under the action, on the one hand, of the fluid pressure inside the buffer chamber (51) and, on the other hand, of the pressure supply inside the annular chamber (84).
  • the use of a positive displacement pump as a member (85) is advantageous in that it makes it possible to extract, per cycle, always the same quantity of fluid, and this regardless of the striking frequency of the 'apparatus.
  • FIG. 9 represents a variant of the apparatus of FIG. 8 in which the same references designate the same members as above.
  • the secondary circuit (61) in communication with the low pressure return circuit (50) of the device, is momentarily connected to the primary circuit comprising the chamber (51), via of the groove (63) of the piston (1), when the latter is in contact with the tool.
  • the buffer chamber (51) is supplied with fluid via the channel (86a) on which is mounted a flow control member (85a) consisting of a positive displacement pump actuated in synchronism with the impact piston.
  • the drawer (87) occupies a stable position when the quantity of fluid extracted per cycle from the chamber (51) through the channel (12), the nozzle (14), the chamber (63) and the channel (61 ), is equal to the quantity of fluid injected into the chamber (51) through the channel (86a) and the member (85a).
  • the quantity of fluid extracted from the chamber (51) becomes, taking into account the increase in the residence time of the piston (1) in the lower position, greater than the quantity of fluid injected by the organ (85a). This results in a displacement of the drawer (87) in a direction of reduction of the volume of the chamber (51) under the action of the supply pressure in the chamber (84), which results in an action on the dispenser. device control which decreases the stroke of the piston.
  • the invention brings a great improvement to the existing technique by providing a method and an apparatus making it possible to adapt, automatically and instantaneously, certain percussion parameters such as impact speed and frequency of the piston to the hardness of the ground in which the device works.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Fluid-Pressure Circuits (AREA)
EP86420181A 1985-07-16 1986-07-07 Verfahren und Vorrichtung zum Steuern der Bewegung des Schlagkolbens einer von einem nichtzusammendrückbaren Fluidum angetriebenen Schlagvorrichtung Expired - Lifetime EP0214064B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86420181T ATE55080T1 (de) 1985-07-16 1986-07-07 Verfahren und vorrichtung zum steuern der bewegung des schlagkolbens einer von einem nichtzusammendrueckbaren fluidum angetriebenen schlagvorrichtung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8511346A FR2584968B1 (fr) 1985-07-16 1985-07-16 Procede de commande du mouvement du piston de frappe d'un appareil a percussions mu par un fluide incompressible sous pression, et appareil pour la mise en oeuvre du procede
FR8511346 1985-07-16
FR868604302A FR2595972B2 (fr) 1985-07-16 1986-03-18 Appareil a percussions
FR8604302 1986-03-18

Publications (2)

Publication Number Publication Date
EP0214064A1 true EP0214064A1 (de) 1987-03-11
EP0214064B1 EP0214064B1 (de) 1990-08-01

Family

ID=26224634

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86420181A Expired - Lifetime EP0214064B1 (de) 1985-07-16 1986-07-07 Verfahren und Vorrichtung zum Steuern der Bewegung des Schlagkolbens einer von einem nichtzusammendrückbaren Fluidum angetriebenen Schlagvorrichtung

Country Status (10)

Country Link
US (1) US4899836A (de)
EP (1) EP0214064B1 (de)
JP (1) JPH0698578B2 (de)
AU (1) AU592357B2 (de)
CA (1) CA1288317C (de)
DE (2) DE3673100D1 (de)
ES (1) ES8706506A1 (de)
FI (1) FI86762C (de)
FR (1) FR2595972B2 (de)
NO (1) NO167266C (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0256955B1 (de) * 1986-08-07 1990-11-07 Etablissements Montabert Verfahren und Vorrichtung zum Einstellen der Schlagparameter des Schlagkolbens einer von einem nicht zusammendrückbaren Fluid angetriebenen Vorrichtung
EP0461565A1 (de) * 1990-06-14 1991-12-18 Krupp Maschinentechnik Gesellschaft Mit Beschränkter Haftung Verfahren zur Ermittlung charakteristischer Kenngrössen eines Schlagwerks und Einrichtung zur Durchführung des Verfahrens
EP0486898A1 (de) * 1990-11-20 1992-05-27 Krupp Maschinentechnik Gesellschaft Mit Beschränkter Haftung Verfahren und Einrichtung zur Anpassung des Arbeitsverhaltens eines Schlagwerks an die Härte des Zerkleinerungsmaterials
EP0688636A1 (de) * 1994-06-23 1995-12-27 Bretec Oy Hydraulischer Schlaghammer
EP0715932A1 (de) 1994-12-08 1996-06-12 Etablissements Montabert Verfahren und Vorrichtung zum Einstellen des Schlaghubes einer, von einem inkompressiblen Fluid angetriebenen, Schlagvorrichtung
EP0752297A2 (de) * 1995-07-06 1997-01-08 Bretec Oy Hydraulischer Schlaghammer
FR2902684A1 (fr) * 2006-06-27 2007-12-28 Montabert Soc Par Actions Simp Procede de commutation de la course de frappe d'un appareil a percussions mu par un fluide incompressible sous pression, et appareil pour la mise en oeuvre de ce procede
CN100522501C (zh) * 2004-10-20 2009-08-05 阿特拉斯科普科凿岩机股份公司 冲击装置
WO2013083903A1 (fr) 2011-12-09 2013-06-13 Montabert Procédé de commutation de la course de frappe d'un piston de frappe d'un appareil à percussions
EP1963052A4 (de) * 2005-12-22 2016-07-27 Atlas Copco Rock Drills Ab Impulsgenerator und impulsmaschine für ein schneidwerkzeug
WO2019158849A1 (fr) 2018-02-14 2019-08-22 Montabert Procédé de réglage de la course de frappe d'un piston de frappe d'un appareil à percussions, et un appareil à percussions pour la mise en œuvre de ce procédé

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618092B1 (fr) * 1987-07-17 1989-11-10 Montabert Ets Distributeur hydraulique pour appareil a percussions mu par un fluide incompressible sous pression
JP2669761B2 (ja) * 1993-02-15 1997-10-29 電気化学工業株式会社 粉状セメント分散剤及びその製造方法
FI941689A (fi) * 1994-04-13 1995-10-14 Doofor Oy Menetelmä ja poralaite poranterään välitettävän iskupulssin muodon sovittamiseksi
CN2215384Y (zh) * 1994-12-30 1995-12-20 陈利钧 储能冲击控制机构
FI104961B (fi) * 1996-07-19 2000-05-15 Sandvik Tamrock Oy Painenestekäyttöinen iskuvasara
FI107891B (fi) * 1998-03-30 2001-10-31 Sandvik Tamrock Oy Painenestekäyttöinen iskulaite
US6035634A (en) * 1999-02-09 2000-03-14 Latch-Tool Development Co. Llc Compact, resistance regulated, multiple output hydraulic tool and seal valve arrangement
US6491114B1 (en) 2000-10-03 2002-12-10 Npk Construction Equipment, Inc. Slow start control for a hydraulic hammer
DE102004035306A1 (de) * 2004-07-21 2006-03-16 Atlas Copco Construction Tools Gmbh Druckmittelbetriebene Schlagvorrichtung insbesondere Hydraulikhammer
SE528081C2 (sv) * 2004-08-25 2006-08-29 Atlas Copco Constr Tools Ab Hydraulisk slagmekanism
SE527762C2 (sv) * 2004-10-14 2006-05-30 Atlas Copco Rock Drills Ab Slagverk
SE528745C2 (sv) * 2005-06-22 2007-02-06 Atlas Copco Rock Drills Ab Ventilanordning för slagverk och slagverk för bergborrmaskin
SE530885C2 (sv) * 2007-02-23 2008-10-07 Atlas Copco Rock Drills Ab Förfarande vid slagverk, slagverk och bergborrmaskin
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.
FI123634B (fi) * 2007-10-05 2013-08-30 Sandvik Mining & Constr Oy Kallionrikkomislaite, suojaventtiili sekä menetelmä kallionrikkomislaitteen käyttämiseksi
CN101927479B (zh) * 2009-06-23 2014-10-22 蒙塔博特公司 液压冲击设备
AU2011301130A1 (en) * 2010-09-10 2013-03-07 Rockdrill Services Australia Pty Ltd Improved rock drill
US9701003B2 (en) * 2014-05-23 2017-07-11 Caterpillar Inc. Hydraulic hammer having delayed automatic shutoff
FR3027543B1 (fr) 2014-10-28 2016-12-23 Montabert Roger Appareil a percussions
US9840000B2 (en) * 2014-12-17 2017-12-12 Caterpillar Inc. Hydraulic hammer having variable stroke control
US20160199969A1 (en) * 2015-01-12 2016-07-14 Caterpillar Inc. Hydraulic hammer having variable stroke control
US20160221171A1 (en) * 2015-02-02 2016-08-04 Caterpillar Inc. Hydraulic hammer having dual valve acceleration control system
US10377028B2 (en) * 2016-03-14 2019-08-13 Caterpillar Inc. Hammer protection system and method
US11590642B2 (en) * 2017-07-24 2023-02-28 Furukawa Rock Drill Co., Ltd. Hydraulic hammering device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908767A (en) * 1974-06-11 1975-09-30 Klemm Guenter Ing Fa Percussion tool
FR2344378A1 (fr) * 1976-03-15 1977-10-14 Hydroacoustic Inc Outil a percussion
FR2375008A1 (fr) * 1976-12-23 1978-07-21 Krupp Gmbh Mouton hydraulique ou pneumatique a frequence de frappe telecommandee
EP0070246A1 (de) * 1981-07-10 1983-01-19 Etablissements Montabert Hydraulische Schlageinrichtung
EP0080446A2 (de) * 1981-11-20 1983-06-01 Atlas Copco Aktiebolag Schlagwerkzeug und Steuerverfahren dafür

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509652A1 (fr) * 1981-07-17 1983-01-21 Montabert Ets Perfectionnement au systeme d'etancheite entre le milieu hydraulique et le milieu exterieur d'un appareil a percussions
DE3505732A1 (de) * 1985-02-15 1986-08-28 Mannesmann AG, 4000 Düsseldorf Hydraulisch betriebene schlagvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908767A (en) * 1974-06-11 1975-09-30 Klemm Guenter Ing Fa Percussion tool
FR2344378A1 (fr) * 1976-03-15 1977-10-14 Hydroacoustic Inc Outil a percussion
FR2375008A1 (fr) * 1976-12-23 1978-07-21 Krupp Gmbh Mouton hydraulique ou pneumatique a frequence de frappe telecommandee
EP0070246A1 (de) * 1981-07-10 1983-01-19 Etablissements Montabert Hydraulische Schlageinrichtung
EP0080446A2 (de) * 1981-11-20 1983-06-01 Atlas Copco Aktiebolag Schlagwerkzeug und Steuerverfahren dafür

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0256955B1 (de) * 1986-08-07 1990-11-07 Etablissements Montabert Verfahren und Vorrichtung zum Einstellen der Schlagparameter des Schlagkolbens einer von einem nicht zusammendrückbaren Fluid angetriebenen Vorrichtung
EP0461565A1 (de) * 1990-06-14 1991-12-18 Krupp Maschinentechnik Gesellschaft Mit Beschränkter Haftung Verfahren zur Ermittlung charakteristischer Kenngrössen eines Schlagwerks und Einrichtung zur Durchführung des Verfahrens
DE4019019A1 (de) * 1990-06-14 1991-12-19 Krupp Maschinentechnik Verfahren zur ermittlung charakteristischer kenngroessen eines schlagwerks und einrichtung zur durchfuehrung des verfahrens
EP0486898A1 (de) * 1990-11-20 1992-05-27 Krupp Maschinentechnik Gesellschaft Mit Beschränkter Haftung Verfahren und Einrichtung zur Anpassung des Arbeitsverhaltens eines Schlagwerks an die Härte des Zerkleinerungsmaterials
EP0688636A1 (de) * 1994-06-23 1995-12-27 Bretec Oy Hydraulischer Schlaghammer
US5653295A (en) * 1994-06-23 1997-08-05 Bretec Oy Hydraulic precussion hammer
US5669281A (en) * 1994-12-08 1997-09-23 Etablissements Montabert Method and machine for altering the striking stroke of a percussive machine moved by a pressurized incompressible fluid
EP0715932A1 (de) 1994-12-08 1996-06-12 Etablissements Montabert Verfahren und Vorrichtung zum Einstellen des Schlaghubes einer, von einem inkompressiblen Fluid angetriebenen, Schlagvorrichtung
US5890548A (en) * 1995-07-06 1999-04-06 Bretec Oy Hydraulic percussion hammer
EP0752297A3 (de) * 1995-07-06 1998-01-14 Bretec Oy Hydraulischer Schlaghammer
EP0752297A2 (de) * 1995-07-06 1997-01-08 Bretec Oy Hydraulischer Schlaghammer
CN100522501C (zh) * 2004-10-20 2009-08-05 阿特拉斯科普科凿岩机股份公司 冲击装置
EP1963052A4 (de) * 2005-12-22 2016-07-27 Atlas Copco Rock Drills Ab Impulsgenerator und impulsmaschine für ein schneidwerkzeug
FR2902684A1 (fr) * 2006-06-27 2007-12-28 Montabert Soc Par Actions Simp Procede de commutation de la course de frappe d'un appareil a percussions mu par un fluide incompressible sous pression, et appareil pour la mise en oeuvre de ce procede
WO2008000958A2 (fr) * 2006-06-27 2008-01-03 Montabert Appareil à percussions mû par un fluide incompressible sous pression
WO2008000958A3 (fr) * 2006-06-27 2008-02-21 Montabert Roger Appareil à percussions mû par un fluide incompressible sous pression
CN101500761B (zh) * 2006-06-27 2012-01-25 蒙塔贝特公司 非压缩性流体驱动的压力冲击装置
US8151900B2 (en) 2006-06-27 2012-04-10 Montabert Percussion equipment driven by a pressurized incompressible fluid
WO2013083903A1 (fr) 2011-12-09 2013-06-13 Montabert Procédé de commutation de la course de frappe d'un piston de frappe d'un appareil à percussions
US9981371B2 (en) 2011-12-09 2018-05-29 Montabert Method for switching the striking stroke of a striking piston of a percussion device
WO2019158849A1 (fr) 2018-02-14 2019-08-22 Montabert Procédé de réglage de la course de frappe d'un piston de frappe d'un appareil à percussions, et un appareil à percussions pour la mise en œuvre de ce procédé

Also Published As

Publication number Publication date
FI862952A0 (fi) 1986-07-15
DE3673100D1 (de) 1990-09-06
NO167266C (no) 1991-10-23
CA1288317C (fr) 1991-09-03
FI86762B (fi) 1992-06-30
JPH0698578B2 (ja) 1994-12-07
AU592357B2 (en) 1990-01-11
AU6018286A (en) 1987-01-22
FI862952A (fi) 1987-01-17
NO862855L (no) 1987-01-19
ES8706506A1 (es) 1987-07-01
FI86762C (fi) 1992-10-12
EP0214064B1 (de) 1990-08-01
FR2595972B2 (fr) 1989-10-20
ES556161A0 (es) 1987-07-01
DE214064T1 (de) 1987-07-02
JPS6219386A (ja) 1987-01-28
FR2595972A2 (fr) 1987-09-25
NO862855D0 (no) 1986-07-15
NO167266B (no) 1991-07-15
US4899836A (en) 1990-02-13

Similar Documents

Publication Publication Date Title
EP0214064B1 (de) Verfahren und Vorrichtung zum Steuern der Bewegung des Schlagkolbens einer von einem nichtzusammendrückbaren Fluidum angetriebenen Schlagvorrichtung
EP0256955B1 (de) Verfahren und Vorrichtung zum Einstellen der Schlagparameter des Schlagkolbens einer von einem nicht zusammendrückbaren Fluid angetriebenen Vorrichtung
EP0516561B1 (de) Hydraulischer Schlagapparat
EP2032316B1 (de) Durch eine unter Druck stehende unkomprimierbare Flüssigkeit angetriebene Schlagausrüstung
FR2690494A1 (fr) Systeme de valve de regulation de pression d'huile pour transmissions hydrostatiques
CA1038725A (en) Hydraulic percussion device
CA2163582C (fr) Procede et appareil pour la regulation de la course de frappe d'un appareil a percussion mu par un fluide incompressible sous pression
DE4134956C2 (de)
EP0300929B1 (de) Hydraulischer Verteiler für eine Schlagvorrichtung
EP3212362B1 (de) Schlagvorrichtung
FR2584968A1 (fr) Procede de commande du mouvement du piston de frappe d'un appareil a percussions mu par un fluide incompressible sous pression, et appareil pour la mise en oeuvre du procede
WO2008149030A2 (fr) Appareil à percussions mû par un fluide incompressible sous pression
CA1205353A (fr) Appareil a percussion mu par un fluide sous pression
JP2003159667A (ja) 液圧式打撃装置のストローク調整機構
JPH1080878A (ja) 液圧式打撃装置
FR2563405A1 (fr) Dispositif de relevage hydraulique pour machines de recolte, notamment pour moissonneuses-batteuses
EP1299213B1 (de) Hydraulisches schlaggerät
JP2759497B2 (ja) 打撃工具
FR2519575A1 (fr) Outil a percussion
FR2536246A1 (fr) Outils hydrauliques portatifs, par exemple secateurs hydrauliques, et procede de rappel du piston de leur verin
WO2020201288A1 (fr) Appareil à percussions avec régulation automatique de la pression d'alimentation de l'appareil à percussions
FR2663587A1 (fr) Mecanisme d'entrainement avec commande pour presses mecaniques.
FR2562611A1 (fr) Procede d'alimentation des verins hydrauliques et verins hydrauliques mettant en oeuvre le procede
EP0838294A1 (de) Antriebsvorrichtung
BE635544A (de)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE GB IT LI LU NL SE

ITCL It: translation for ep claims filed

Representative=s name: BARZANO' E ZANARDO MILANO S.P.A.

17P Request for examination filed

Effective date: 19870120

TCAT At: translation of patent claims filed
TCNL Nl: translation of patent claims filed
DET De: translation of patent claims
17Q First examination report despatched

Effective date: 19880912

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19900801

REF Corresponds to:

Ref document number: 55080

Country of ref document: AT

Date of ref document: 19900815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3673100

Country of ref document: DE

Date of ref document: 19900906

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19910618

Year of fee payment: 6

26N No opposition filed
ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19910731

EPTA Lu: last paid annual fee
BERE Be: lapsed

Owner name: ETS MONTABERT

Effective date: 19910731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19920707

EAL Se: european patent in force in sweden

Ref document number: 86420181.9

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20020710

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020715

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20020730

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20020930

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030707

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030707

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20030714

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040203

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20030707

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040708

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050707