ATE218946T1 - FLUID OPERATED IMPACT MECHANISM - Google Patents

FLUID OPERATED IMPACT MECHANISM

Info

Publication number
ATE218946T1
ATE218946T1 AT99101293T AT99101293T ATE218946T1 AT E218946 T1 ATE218946 T1 AT E218946T1 AT 99101293 T AT99101293 T AT 99101293T AT 99101293 T AT99101293 T AT 99101293T AT E218946 T1 ATE218946 T1 AT E218946T1
Authority
AT
Austria
Prior art keywords
sleeve
face
accommodating
piston
outer housing
Prior art date
Application number
AT99101293T
Other languages
German (de)
Inventor
Heinz-Juergen Dr-Ing Prokop
Martin Schareina
Marcus Geimer
Thomas Deimel
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
Application granted granted Critical
Publication of ATE218946T1 publication Critical patent/ATE218946T1/en

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

The rammer has a sleeve-shaped working cylinder (2) in an outer housing (4). The impact piston (3) supports itself on the sleeve via several guide sections. The front guide section (2b) facing the tool, and further neighbouring sections up to the section (2a) for the larger piston face (A1), are integral parts of the sleeve. The outer sleeve face (2g) and the outer housing form pressure medium channels (12) for the return stroke of the impact piston. Each channel is of a length to extend from a front connection channel (14) with a return stroke chamber (2e) accommodating the smaller piston face (A2), via a rear connection channel (16). This is temporarily connected to a working stroke chamber (2d) accommodating the larger piston face.
AT99101293T 1998-02-03 1999-01-25 FLUID OPERATED IMPACT MECHANISM ATE218946T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19804078A DE19804078A1 (en) 1998-02-03 1998-02-03 Fluid powered striking mechanism

Publications (1)

Publication Number Publication Date
ATE218946T1 true ATE218946T1 (en) 2002-06-15

Family

ID=7856429

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99101293T ATE218946T1 (en) 1998-02-03 1999-01-25 FLUID OPERATED IMPACT MECHANISM

Country Status (4)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10123202A1 (en) * 2001-05-12 2002-11-14 Krupp Berco Bautechnik Gmbh Method and device for protecting a fluid-powered striking mechanism against empty blows
DE102010029918A1 (en) * 2010-06-10 2011-12-15 Hilti Aktiengesellschaft machine tool
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 (en) * 2013-11-13 2018-10-24 Sandvik Mining and Construction Oy Impact device and method of dismounting the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062411A (en) * 1975-12-05 1977-12-13 Gardner-Denver Company Hydraulic percussion tool with impact blow and frequency control
US4181183A (en) * 1978-01-05 1980-01-01 Nippon Pneumatic Manufacturing Co., Ltd. Impact tool
FI60151C (en) * 1979-06-26 1981-12-10 Tampella Oy Ab HYDRAULISK SLAGANORDNING
DE3400302A1 (en) * 1984-01-03 1985-08-29 Mannesmann AG, 4000 Düsseldorf HYDRAULIC ACTUATOR
DE3412187A1 (en) * 1984-04-02 1985-10-10 Rižskij politechničeskij institut imeni A. Ja. Pelše, Riga Compressed-air hammer
DE3443542A1 (en) * 1984-11-29 1986-06-05 Fried. Krupp Gmbh, 4300 Essen HYDRAULIC BEATER
DE9319223U1 (en) * 1993-12-15 1994-02-24 Walter, Hans-Philipp, 74251 Lehrensteinsfeld Hammer drill

Also Published As

Publication number Publication date
EP0933169A2 (en) 1999-08-04
DE19804078A1 (en) 1999-08-05
ES2177145T3 (en) 2002-12-01
DE59901686D1 (en) 2002-07-18
EP0933169B1 (en) 2002-06-12
EP0933169A3 (en) 2000-11-15

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Legal Events

Date Code Title Description
EEFA Change of the company name
REN Ceased due to non-payment of the annual fee