EP0933169A3 - Fluidbetriebenes Schlagwerk - Google Patents

Fluidbetriebenes Schlagwerk Download PDF

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Publication number
EP0933169A3
EP0933169A3 EP99101293A EP99101293A EP0933169A3 EP 0933169 A3 EP0933169 A3 EP 0933169A3 EP 99101293 A EP99101293 A EP 99101293A EP 99101293 A EP99101293 A EP 99101293A EP 0933169 A3 EP0933169 A3 EP 0933169A3
Authority
EP
European Patent Office
Prior art keywords
sleeve
face
accommodating
piston
outer housing
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
EP99101293A
Other languages
English (en)
French (fr)
Other versions
EP0933169B1 (de
EP0933169A2 (de
Inventor
Heinz-Jürgen Dr.-Ing. Prokop
Martin Schareina
Marcus Geimer
Thomas Deimel
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.)
Construction Tools GmbH
Original Assignee
Krupp Berco Bautechnik GmbH
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 Krupp Berco Bautechnik GmbH filed Critical Krupp Berco Bautechnik GmbH
Publication of EP0933169A2 publication Critical patent/EP0933169A2/de
Publication of EP0933169A3 publication Critical patent/EP0933169A3/de
Application granted granted Critical
Publication of EP0933169B1 publication Critical patent/EP0933169B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2209/00—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D2209/005—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously having a tubular-slide valve, which is coaxial with the piston
    • 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
    • B25D2250/375—Fluid springs

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

Die Erfindung bezieht sich auf ein fluidbetriebenes Schlagwerk (1) mit einem Schlagkolben (3), der unter Einwirkung einer Steuerung mit einem Steuerschieber (15) wechselweise einen Arbeitshub und einen Rückhub ausführt.
Die Steuerung ist dabei derart ausgebildet, daß der Steuerschieber (15) - in Abhängigkeit von der Stellung des Schlagkobens (3) - eine Arbeitshub- bzw. eine Rückhubstellung einnimmt.
In der Arbeitshubstellung ist der Schlagkolben (3) derart mit dem Arbeitsdruck beaufschlagt, daß er - entgegen der Wirkung einer ständigen Rückstellkraft - einen Arbeitshub (Pfeil 6) ausführt; im Gegensatz dazu ist der Schlagkolben (3) in der Rückhubstellung derart an eine Ablaufleitung (17) angeschlossen, daß er unter Einwirkung der Rückstellkraft einen Rückhub ausführt.
Mit der Erfindung wird der Vorschlag unterbreitet, den Schlagkolben (3) über mehrere Führungsabschnitte (2a, b) in einer Laufbuchse (2) abzustützen, die ihrerseits in einem Außengehäuse (4) angeordnet ist.
Die Laufbuchse (2) - deren dem Außengehäuse (4) zugewandte Außenfläche (2g) gemeinsam mit diesem zumindest einen in Längsrichtung dieser beiden Teile verlaufenden, für den Schlagkolben-Rückhub benutzten Druckmittelkanal (12) bildet - ist zumindest über eine derartige Längserstreckung einteilig ausgebildet, daß der dem Werkzeug zugewandte vordere Führungsabschnitt (2b) und zumindest sich etwa an diesen in Rückhubrichtung anschließende weitere Führungsabschnitte bis zum Führungsabschnitt (2a) für die größere Kolbenfläche (A1) einschließlich Bestandteil der Laufbuchse sind.
Weiterhin ist die Länge jedes betreffenden, mit dem Arbeitsdruck beaufschlagten Druckmittelkanals (12) so bemessen, daß er sich über einen davon ausgehenden vorderen Verbindungskanal (14) mit einer Rückhubkammer (2e) - welche die kleinere Kolbenfläche (A1) aufnimmt - bis über einen davon ausgehenden hinteren Verbindungskanal (16) erstreckt, welcher zeitweilig an eine die größere Kolbenfläche (A1) aufnehmende Arbeitshubkammer (2d) angeschlossen ist.
EP99101293A 1998-02-03 1999-01-25 Fluidbetriebenes Schlagwerk Expired - Lifetime EP0933169B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19804078A DE19804078A1 (de) 1998-02-03 1998-02-03 Fluidbetriebenes Schlagwerk
DE19804078 1998-02-03

Publications (3)

Publication Number Publication Date
EP0933169A2 EP0933169A2 (de) 1999-08-04
EP0933169A3 true EP0933169A3 (de) 2000-11-15
EP0933169B1 EP0933169B1 (de) 2002-06-12

Family

ID=7856429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99101293A Expired - Lifetime EP0933169B1 (de) 1998-02-03 1999-01-25 Fluidbetriebenes Schlagwerk

Country Status (4)

Country Link
EP (1) EP0933169B1 (de)
AT (1) ATE218946T1 (de)
DE (2) DE19804078A1 (de)
ES (1) ES2177145T3 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10123202A1 (de) * 2001-05-12 2002-11-14 Krupp Berco Bautechnik Gmbh Verfahren und Vorrichtung zur Absicherung eines fluidbetriebenen Schlagwerks gegen Leerschläge
DE102010029918A1 (de) * 2010-06-10 2011-12-15 Hilti Aktiengesellschaft Werkzeugmaschine
US9151386B2 (en) 2013-03-15 2015-10-06 Caterpillar Inc. Accumulator membrane for a hydraulic hammer
US9592598B2 (en) 2013-03-15 2017-03-14 Caterpillar Inc. Hydraulic hammer having impact system subassembly
US9555531B2 (en) 2013-03-15 2017-01-31 Caterpillar Inc. Hydraulic hammer having co-axial accumulator and piston
EP2873489B1 (de) * 2013-11-13 2018-10-24 Sandvik Mining and Construction Oy Stoßvorrichtung und Verfahren zur Demontage dafür

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2645213A1 (de) * 1975-12-05 1977-06-08 Gardner Denver Co Schlagwerkzeug
US4181183A (en) * 1978-01-05 1980-01-01 Nippon Pneumatic Manufacturing Co., Ltd. Impact tool
DE3412187A1 (de) * 1984-04-02 1985-10-10 Rižskij politechničeskij institut imeni A. Ja. Pelše, Riga Drucklufthammer
EP0183093A1 (de) * 1984-11-29 1986-06-04 Fried. Krupp Gesellschaft mit beschränkter Haftung Hydraulische Schlagvorrichtung
EP0658681A2 (de) * 1993-12-15 1995-06-21 Walter, Hans-Philipp Bohrhammer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI60151C (fi) * 1979-06-26 1981-12-10 Tampella Oy Ab Hydraulisk slaganordning
DE3400302A1 (de) * 1984-01-03 1985-08-29 Mannesmann AG, 4000 Düsseldorf Hydraulisch betaetigte schlagvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2645213A1 (de) * 1975-12-05 1977-06-08 Gardner Denver Co Schlagwerkzeug
US4181183A (en) * 1978-01-05 1980-01-01 Nippon Pneumatic Manufacturing Co., Ltd. Impact tool
DE3412187A1 (de) * 1984-04-02 1985-10-10 Rižskij politechničeskij institut imeni A. Ja. Pelše, Riga Drucklufthammer
EP0183093A1 (de) * 1984-11-29 1986-06-04 Fried. Krupp Gesellschaft mit beschränkter Haftung Hydraulische Schlagvorrichtung
EP0658681A2 (de) * 1993-12-15 1995-06-21 Walter, Hans-Philipp Bohrhammer

Also Published As

Publication number Publication date
DE59901686D1 (de) 2002-07-18
DE19804078A1 (de) 1999-08-05
EP0933169B1 (de) 2002-06-12
ES2177145T3 (es) 2002-12-01
EP0933169A2 (de) 1999-08-04
ATE218946T1 (de) 2002-06-15

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