FR2361978A1 - HYDRAULIC DRIVE DEVICE FOR PERCUSSION TOOL - Google Patents

HYDRAULIC DRIVE DEVICE FOR PERCUSSION TOOL

Info

Publication number
FR2361978A1
FR2361978A1 FR7717140A FR7717140A FR2361978A1 FR 2361978 A1 FR2361978 A1 FR 2361978A1 FR 7717140 A FR7717140 A FR 7717140A FR 7717140 A FR7717140 A FR 7717140A FR 2361978 A1 FR2361978 A1 FR 2361978A1
Authority
FR
France
Prior art keywords
working piston
drive device
cylinder
hydraulic drive
working
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
FR7717140A
Other languages
French (fr)
Other versions
FR2361978B1 (en
Inventor
Heinrich Manten
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.)
Salzgitter Maschinen AG
Original Assignee
Salzgitter Maschinen 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
Application filed by Salzgitter Maschinen AG filed Critical Salzgitter Maschinen AG
Publication of FR2361978A1 publication Critical patent/FR2361978A1/en
Application granted granted Critical
Publication of FR2361978B1 publication Critical patent/FR2361978B1/fr
Granted 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
    • B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator

Abstract

L'invention concerne un dispositif hydraulique d'entraînement pour outil à percussion du type comportant un piston de travail pouvant coulisser dans un cylindre de travail et un tiroir pouvant coulisser dans un cylindre de distribution. Selon l'invention d'une extrémité postérieure du piston de travail, opposée à une extrémité de percussion de celui-ci, part une tige terminale coaxiale au piston de travail ayant une aire de section moindre que celui-ci et pouvant coulisser dans un cylindre de tige. Dans son application à l'entraînement d'outils à percussion, un amortisseur n'est pas nécessaire pour le piston de travail, car la distribution hydraulique garantit un arrêt sûr du piston de travail lors du recul.The invention relates to a hydraulic drive device for an impact tool of the type comprising a working piston slidable in a working cylinder and a spool slidable in a distribution cylinder. According to the invention from a posterior end of the working piston, opposite to a percussion end thereof, leaves a terminal rod coaxial with the working piston having a section area smaller than the latter and being able to slide in a cylinder. of rod. In its application to the drive of impact tools, a shock absorber is not required for the working piston, since the hydraulic distribution ensures a safe stop of the working piston during recoil.

FR7717140A 1976-08-20 1977-06-03 HYDRAULIC DRIVE DEVICE FOR PERCUSSION TOOL Granted FR2361978A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762637515 DE2637515A1 (en) 1976-08-20 1976-08-20 HYDRAULIC DRIVING DEVICE FOR A DRIVING TOOL

Publications (2)

Publication Number Publication Date
FR2361978A1 true FR2361978A1 (en) 1978-03-17
FR2361978B1 FR2361978B1 (en) 1983-01-28

Family

ID=5985928

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7717140A Granted FR2361978A1 (en) 1976-08-20 1977-06-03 HYDRAULIC DRIVE DEVICE FOR PERCUSSION TOOL

Country Status (5)

Country Link
DE (1) DE2637515A1 (en)
FR (1) FR2361978A1 (en)
GB (1) GB1538637A (en)
PL (1) PL108372B1 (en)
SU (1) SU695578A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3414190A1 (en) * 1983-04-15 1984-10-18 Toshio Tokio/Tokyo Mikiya PNEUMATIC ACTUATED MULTI-NEEDLE DRIVING TOOL

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8715784U1 (en) * 1987-11-28 1989-03-23 Salzgitter Maschinenbau Gmbh, 3320 Salzgitter, De

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH94169A (en) * 1920-10-13 1922-04-17 W H Dorman & Co Ltd Rock hole punch.
FR1518771A (en) * 1967-01-24 1968-03-29 Meudon Forges Atel Percussion tool operated by incompressible fluid
FR1536768A (en) * 1967-09-13 1968-08-16 Ingersoll Rand Co Punch
FR1578647A (en) * 1968-09-02 1969-08-14
FR2328100A1 (en) * 1975-10-14 1977-05-13 Gardner Denver Co HYDRAULIC DRILL HAMMER

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH94169A (en) * 1920-10-13 1922-04-17 W H Dorman & Co Ltd Rock hole punch.
FR1518771A (en) * 1967-01-24 1968-03-29 Meudon Forges Atel Percussion tool operated by incompressible fluid
FR1536768A (en) * 1967-09-13 1968-08-16 Ingersoll Rand Co Punch
FR1578647A (en) * 1968-09-02 1969-08-14
FR2328100A1 (en) * 1975-10-14 1977-05-13 Gardner Denver Co HYDRAULIC DRILL HAMMER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3414190A1 (en) * 1983-04-15 1984-10-18 Toshio Tokio/Tokyo Mikiya PNEUMATIC ACTUATED MULTI-NEEDLE DRIVING TOOL

Also Published As

Publication number Publication date
GB1538637A (en) 1979-01-24
DE2637515A1 (en) 1978-02-23
FR2361978B1 (en) 1983-01-28
SU695578A3 (en) 1979-10-30
PL108372B1 (en) 1980-04-30
PL200364A1 (en) 1978-04-10

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Legal Events

Date Code Title Description
ST Notification of lapse