EP2489476A1 - Appui de forage pour un marteau perforateur - Google Patents

Appui de forage pour un marteau perforateur Download PDF

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Publication number
EP2489476A1
EP2489476A1 EP20120150866 EP12150866A EP2489476A1 EP 2489476 A1 EP2489476 A1 EP 2489476A1 EP 20120150866 EP20120150866 EP 20120150866 EP 12150866 A EP12150866 A EP 12150866A EP 2489476 A1 EP2489476 A1 EP 2489476A1
Authority
EP
European Patent Office
Prior art keywords
spring
drill
hydraulic cylinder
support
pressure chamber
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
EP20120150866
Other languages
German (de)
English (en)
Other versions
EP2489476B1 (fr
Inventor
Stefan Götzfried
Konrad Artmann
Michael Bayerl
Harald Streicher
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.)
Hilti AG
Original Assignee
Hilti AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=45531194&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2489476(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hilti AG filed Critical Hilti AG
Priority to PL12150866T priority Critical patent/PL2489476T3/pl
Publication of EP2489476A1 publication Critical patent/EP2489476A1/fr
Application granted granted Critical
Publication of EP2489476B1 publication Critical patent/EP2489476B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25D17/28—Supports; Devices for holding power-driven percussive tools in working position
    • B25D17/30—Pillars and struts
    • 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
    • B25D17/24—Damping the reaction force
    • 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
    • B25D17/24—Damping the reaction force
    • B25D17/245—Damping the reaction force using a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/125—Hydraulic tool components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/371—Use of springs

Definitions

  • the invention relates to a drill support for a hammer drill according to the preamble of claim 1.
  • a drill support is formed with a foot for placement on the ground, a holder for the hammer drill, and a telescopic hydraulic cylinder with which the holder relative to the foot in the axial direction displaceable is, wherein in the telescopic hydraulic cylinder at least one pressure chamber is arranged, which is acted upon for extending the telescopic hydraulic cylinder with hydraulic fluid.
  • Such drill supports are, for example, from AT 226174 known. They are used inter alia in underground mining in the production of blasting holes and serve to generate at least a portion of the contact pressure of the hammer drill and / or support the hammer drill.
  • the drilling performance that can be achieved using hydraulically operated drill supports may be less than the drilling performance that can be achieved using comparable pneumatically operated drill supports, particularly at low contact forces under the drilling performance, in particular, the achievable propulsion per unit time can be understood).
  • the object of the invention is to provide a drill support, with the particularly simple design and very high reliability, a particularly good drilling performance can be achieved.
  • An inventive drill support is characterized in that it comprises at least one spring means for axially cushioning the holder relative to the foot.
  • a basic idea of the invention can be seen in the force curve between the holder for the hammer drill and the foot to provide a spring device which cooperates with the hydraulic cylinder.
  • This spring device can absorb elastically in the axial direction directed changes in length of the drill support between the bracket and foot.
  • the invention has recognized that the increased drilling performance observed with pneumatic jacking supports may be due to a spring action which occurs with pneumatic jacking columns due to the compressibility of the gaseous operating fluid.
  • This spring effect has the consequence that the reaction time compared to a hydraulic drill support can be lower, which in turn can be associated with higher drilling performance, especially at low contact forces.
  • hydraulic jacking supports are often sluggish than pneumatic jacking supports, and therefore slower at low contact pressures.
  • the invention builds and provides, in addition to the hydraulic drive to arrange a spring device. Due to this additional spring means can be achieved with hydraulic drill columns reaction times, which can compete with the response times of pneumatic drill supports. As a result, particularly high drilling performance can be achieved with the invention, without the particularly robust and reliable hydraulic drive concept would have to be abandoned.
  • the spring device is arranged in series with the pressure chamber and / or acts. According to this embodiment, a change in length caused by expansion of the spring element and a change in length caused by expansion of the pressure chamber add up. In such a series connection, a particularly good reaction time reduction is achieved.
  • the spring device has at least one solid-state spring, in particular a metal spring.
  • the solid-state spring may be a metal spring.
  • the solid-state spring may be a spiral spring or a plate spring.
  • the spring device has at least one gas spring.
  • a gas in particular air, is used to provide the spring force.
  • a gas spring can be a special provide favorable force curve.
  • a gas spring can be particularly reliable, especially in long-term operation.
  • the gas spring has a spring gas volume which is outside the hydraulic cylinder and / or the pressure chamber of the hydraulic cylinder.
  • the gas spring may comprise a spring housing in which the spring gas volume is located, and which is in fluid communication with the pressure space via a line. Such an arrangement may be advantageous in terms of maintenance because gas spring and hydraulic cylinder can be maintained separately.
  • the gas spring has a spring gas volume, which is located in the pressure chamber of the hydraulic cylinder. As a result, a particularly compact arrangement can be obtained.
  • the invention also relates to a drilling apparatus having a drill support according to the invention and a pressure source for pressurizing the pressure chamber of the hydraulic cylinder.
  • the pressure fluid may preferably be water, but in principle also hydraulic oil.
  • the hydraulic cylinder is suitably a double-acting cylinder, so that it can be hydraulically both extended and retracted.
  • the drilling device comprises a hammer drill, which is arranged on the holder of the drill support.
  • the hammer drill for example, have an electropneumatic drive.
  • the spring device is preferably arranged on the drill support, whereby a particularly simple and compact arrangement is obtained.
  • At least one valve is provided, with which a flow of pressure fluid between the pressure source and the pressure chamber can be influenced.
  • the extension of the drill support can be controlled in a particularly simple manner.
  • the spring device has at least one gas spring, wherein the valve is arranged in line between the gas spring and the pressure source.
  • the gas spring can also act when the valve is closed due to control or greatly reduced in its cross section.
  • the valve is arranged in line between the gas spring and / or the pressure chamber.
  • FIG. 1 A first embodiment of a drilling device according to the invention is shown in FIG FIG. 1 shown.
  • the drilling apparatus has a hammer drill 3, which is shown only schematically, and a drill support 1, to which the drill chamber is fastened, and which can support the hammer drill 3 and can support a propulsion of the hammer drill 3.
  • the drill support 1 has at its one end an example formed as an eye bracket 22 to which the hammer 3 is hinged. At its other end, the drill support on a foot 11 which rests on the floor 8.
  • the drill support 1 further comprises a hydraulic cylinder 20 which is arranged between the holder 22 and the foot 11, and with which the holder 22 relative to the foot 11 in the axial direction 6 is adjustable. Accordingly, when the hydraulic cylinder 20 is extended, the hammer 3 is pushed away from the ground 8.
  • the hydraulic cylinder 20 has a cylinder housing 29 and a piston 28 movable therein.
  • the holder 22 on the cylinder housing 29 and the foot 11 is arranged on the piston 28.
  • a reverse arrangement is possible in which the holder is arranged on the piston and the foot on the cylinder housing.
  • the piston can also be designed in several parts and / or telescopic.
  • the hydraulic cylinder 20 is double-acting and therefore has a first pressure chamber 25 which is acted upon for extending the hydraulic cylinder 20 with hydraulic fluid 40, and a second pressure chamber 35 which is acted upon for retraction of the hydraulic cylinder 20 with hydraulic fluid 40.
  • a pressure source 60 is connected to the targeted extension or retraction of the hydraulic cylinder hydraulic fluid 40, in particular water, in the pressure chamber 25 and 35 can be introduced.
  • a conduit 66 extending between the pressure source 60 and the pressure chamber 25 is a valve 65 for influencing the fluid exchange between the pressure source 60 and the pressure chamber 25 is provided.
  • This valve 65 may be formed, for example, as a directional control valve or as a combined directional and control valve.
  • pressure fluid 40 is shown only in the first pressure chamber 25 in the figures. In a double-acting hydraulic cylinder 20 but pressure fluid will be in the pressure chamber 35 usually also.
  • a spring device 50 which in the embodiment of FIG. 1 a gas spring 54 has.
  • the gas spring 54 outside the cylinder housing 20 and / or the pressure chamber 25 is provided. It has a spring housing 56, whose interior is connected via a line 57 to the pressure chamber 25 in line connection. Inside the spring housing 56 is a spring gas volume 55, in particular of air, which provides the desired spring action.
  • the gas spring 54 of the FIG. 1 is thus designed as a bladder storage.
  • the gas spring may also be formed by a spring gas volume is arranged in the interior of the pressure chamber 25, in which case the external spring housing 56 and the conduit 57 may be omitted.
  • FIG. 2 A further embodiment of a drilling device according to the invention is shown in FIG FIG. 2 shown.
  • This in FIG. 2 illustrated embodiment differs from the in FIG. 1 illustrated embodiment only by the configuration and arrangement of the spring device. For the remaining elements, therefore, the above description of the FIG. 1 to get expelled.
  • the spring device 50 has a solid-state spring 52, for example a spiral spring.
  • the spring device could also be arranged, for example, between the holder 22 and the pressure chamber 25.
  • both in the embodiment of FIG. 1 as well as in the embodiment of FIG. 2 act the spring means 50 and 50 'in series with the pressure chamber 25, that is, the spring means 50 and 50' can absorb changes in length between the holder 22 and foot 11, without supplied from the pressure source 60 pressure fluid into the pressure chamber 25 is discharged or discharged from the pressure chamber 25.
  • the spring means 50 and 50' can absorb changes in length between the holder 22 and foot 11, without supplied from the pressure source 60 pressure fluid into the pressure chamber 25 is discharged or discharged from the pressure chamber 25.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP12150866.7A 2011-02-16 2012-01-12 Appui de forage pour un marteau perforateur Revoked EP2489476B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12150866T PL2489476T3 (pl) 2011-02-16 2012-01-12 Podpórka wiertarki do wiertarki udarowej

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011004211A DE102011004211A1 (de) 2011-02-16 2011-02-16 Bohrstütze für einen Bohrhammer

Publications (2)

Publication Number Publication Date
EP2489476A1 true EP2489476A1 (fr) 2012-08-22
EP2489476B1 EP2489476B1 (fr) 2015-07-01

Family

ID=45531194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12150866.7A Revoked EP2489476B1 (fr) 2011-02-16 2012-01-12 Appui de forage pour un marteau perforateur

Country Status (5)

Country Link
EP (1) EP2489476B1 (fr)
CA (1) CA2765037A1 (fr)
DE (1) DE102011004211A1 (fr)
PL (1) PL2489476T3 (fr)
ZA (1) ZA201201126B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107378530A (zh) * 2017-08-08 2017-11-24 格林精密部件(苏州)有限公司 一种新型弹性支座

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1045365A (fr) * 1951-11-22 1953-11-25 Applevage Amortisseur pour pistons actionnés par des fluides
US2754804A (en) 1954-01-15 1956-07-17 Goodman Mfg Co Automatic feed pressure control for telescopic stoper leg
GB764402A (en) 1955-01-06 1956-12-28 Bosch Gmbh Robert Improvements in or relating to supports for hand-guided percussive tools
ATA226174A (de) 1973-04-19 1976-10-15 Aerosol Automat Veb Verfahren zur herstellung eines polierkorpers auf der basis von aluminiumoxid
FR2446155A1 (fr) * 1979-01-09 1980-08-08 Villedary Jacques Support mobile pour outil pneumatique tel que marteau piqueur
EP0391613A2 (fr) * 1989-04-01 1990-10-10 John Macdonald & Company (Pneumatic Tools) Limited Marteaux de démolition et supports pour cela
WO2004071929A1 (fr) * 2003-02-14 2004-08-26 Hultdin System Ab Dispositif amortisseur
FR2894303A1 (fr) * 2005-12-02 2007-06-08 Pommier S C E B P Sa Verin hydraulique a amortissement
US20070215368A1 (en) * 2006-03-15 2007-09-20 Sorric Ronald J Jackhammer lift assist

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2500932A (en) * 1944-12-01 1950-03-21 Joy Mfg Co Drilling apparatus
US3117634A (en) 1958-02-26 1964-01-14 Nils Torsten Neldas Ground borers
US2917953A (en) 1959-02-24 1959-12-22 Edward A Badali Pneumatic tool support
AT226174B (de) 1960-11-25 1963-03-11 Ingenieurbuero Dipl- Flottmann Umschaltventil für Druckmittelarbeitsgeräte, insbesondere Untertagebetriebvorschubstützen von Bohrhämmern
AU617316B2 (en) 1987-05-12 1991-11-28 Hydra-Push Pty. Ltd. Pusher leg for rock drill apparatus
AU2007225033B8 (en) * 2006-03-15 2012-12-06 Integrated Tool Solutions, Llc Jackhammer with a lift assist

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1045365A (fr) * 1951-11-22 1953-11-25 Applevage Amortisseur pour pistons actionnés par des fluides
US2754804A (en) 1954-01-15 1956-07-17 Goodman Mfg Co Automatic feed pressure control for telescopic stoper leg
GB764402A (en) 1955-01-06 1956-12-28 Bosch Gmbh Robert Improvements in or relating to supports for hand-guided percussive tools
ATA226174A (de) 1973-04-19 1976-10-15 Aerosol Automat Veb Verfahren zur herstellung eines polierkorpers auf der basis von aluminiumoxid
FR2446155A1 (fr) * 1979-01-09 1980-08-08 Villedary Jacques Support mobile pour outil pneumatique tel que marteau piqueur
EP0391613A2 (fr) * 1989-04-01 1990-10-10 John Macdonald & Company (Pneumatic Tools) Limited Marteaux de démolition et supports pour cela
WO2004071929A1 (fr) * 2003-02-14 2004-08-26 Hultdin System Ab Dispositif amortisseur
FR2894303A1 (fr) * 2005-12-02 2007-06-08 Pommier S C E B P Sa Verin hydraulique a amortissement
US20070215368A1 (en) * 2006-03-15 2007-09-20 Sorric Ronald J Jackhammer lift assist

Also Published As

Publication number Publication date
CA2765037A1 (fr) 2012-08-16
ZA201201126B (en) 2012-11-28
DE102011004211A1 (de) 2012-08-16
PL2489476T3 (pl) 2015-12-31
EP2489476B1 (fr) 2015-07-01

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