EP1270103A3 - Hydraulic working machine - Google Patents

Hydraulic working machine Download PDF

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Publication number
EP1270103A3
EP1270103A3 EP02450122A EP02450122A EP1270103A3 EP 1270103 A3 EP1270103 A3 EP 1270103A3 EP 02450122 A EP02450122 A EP 02450122A EP 02450122 A EP02450122 A EP 02450122A EP 1270103 A3 EP1270103 A3 EP 1270103A3
Authority
EP
European Patent Office
Prior art keywords
rod
working space
side working
hydraulic
space
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
EP02450122A
Other languages
German (de)
French (fr)
Other versions
EP1270103B1 (en
EP1270103A2 (en
Inventor
Manfred Kurz
Thomas Reissig
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.)
Hoerbiger Automatisierungstechnik Holding GmbH
Original Assignee
Hoerbiger Automatisierungstechnik Holding 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 Hoerbiger Automatisierungstechnik Holding GmbH filed Critical Hoerbiger Automatisierungstechnik Holding GmbH
Publication of EP1270103A2 publication Critical patent/EP1270103A2/en
Publication of EP1270103A3 publication Critical patent/EP1270103A3/en
Application granted granted Critical
Publication of EP1270103B1 publication Critical patent/EP1270103B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Eine hydraulische Arbeitsmaschine weist einen unter Druck im kolbenseitigen Arbeitsraum (1) ein Werkzeug (2) im Arbeitsgang (Pfeil 3) bewegenden Arbeitszylinder (4) auf, der in dem bei der Werkzeugrückstellung (Pfeil 5) unter Druck stehenden stangenseitigen Arbeitsraum (6) einen gegenüber der Kolbenseite (1) stark verkleinerten Querschnitt (7) aufweist. Zum Not-Stop ist der Abfluß aus dem stangenseitigen Arbeitsraum (6) über das zugehörige Regelventil (8) absperrbar. Gleichzeitig wird der stangenseitige Arbeitsraum (6) über ein schnell schaltendes Not-Ventil (12) mit einer separaten Hydraulik-Hochdruckmediumquelle (13,15) verbunden, womit der Kompressibilität des Hydraulikmediums im Stangenraum entgegengewirkt und der Stop-Weg drastisch reduziert werden kann.

Figure 00000001
A hydraulic working machine has a working cylinder (4) which moves under pressure in the piston-side working space (1), a tool (2) in the operation (arrow 3), which in the rod-side working space (6) under pressure during the tool return (arrow 5) has greatly reduced cross-section (7) opposite the piston side (1). For emergency stop the drain from the rod-side working space (6) via the associated control valve (8) can be shut off. At the same time, the rod-side working space (6) is connected via a fast-switching emergency valve (12) to a separate hydraulic high-pressure medium source (13, 15), whereby the compressibility of the hydraulic medium in the rod space can be counteracted and the stopping distance drastically reduced.
Figure 00000001
EP02450122A 2001-06-27 2002-05-22 Hydraulic working machine Expired - Lifetime EP1270103B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT9972001A AT410469B (en) 2001-06-27 2001-06-27 HYDRAULIC WORKING MACHINE
AT9972001 2001-06-27

Publications (3)

Publication Number Publication Date
EP1270103A2 EP1270103A2 (en) 2003-01-02
EP1270103A3 true EP1270103A3 (en) 2005-10-05
EP1270103B1 EP1270103B1 (en) 2008-04-02

Family

ID=3683899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02450122A Expired - Lifetime EP1270103B1 (en) 2001-06-27 2002-05-22 Hydraulic working machine

Country Status (3)

Country Link
EP (1) EP1270103B1 (en)
AT (1) AT410469B (en)
DE (1) DE50212001D1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2542665A1 (en) * 1975-09-25 1977-05-05 Hartmann & Laemmle Kg Valve for shock free hydraulic decompression - has pressure switch controlling choke with regulator slide
DE4416955A1 (en) * 1994-05-13 1994-12-01 Ulrich Keller Relief valve
DE19711207A1 (en) * 1997-03-18 1998-09-24 Schuler Pressen Gmbh & Co Pulling device for a press
EP0967028A2 (en) * 1998-03-03 1999-12-29 Hoerbiger Hydraulik GmbH Hydraulic press

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2856583C2 (en) * 1978-12-22 1985-02-07 Alfred Dipl.-Ing. 1000 Berlin Ulrich Three-point hitch for a tractor with a rear and / or front attachment
JPH03229003A (en) * 1989-12-04 1991-10-11 Hitachi Constr Mach Co Ltd Hydraulic motor driving circuit
JPH07119860A (en) * 1993-10-20 1995-05-12 Nisshinbo Ind Inc Liquid pressure direction control device and liquid pressure operating device using the control device
JPH08121416A (en) * 1994-10-24 1996-05-14 Tokyo Isuzu Jidosha Kk Hydraulic system with accumulator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2542665A1 (en) * 1975-09-25 1977-05-05 Hartmann & Laemmle Kg Valve for shock free hydraulic decompression - has pressure switch controlling choke with regulator slide
DE4416955A1 (en) * 1994-05-13 1994-12-01 Ulrich Keller Relief valve
DE19711207A1 (en) * 1997-03-18 1998-09-24 Schuler Pressen Gmbh & Co Pulling device for a press
EP0967028A2 (en) * 1998-03-03 1999-12-29 Hoerbiger Hydraulik GmbH Hydraulic press

Also Published As

Publication number Publication date
AT410469B (en) 2003-05-26
DE50212001D1 (en) 2008-05-15
EP1270103B1 (en) 2008-04-02
ATA9972001A (en) 2002-09-15
EP1270103A2 (en) 2003-01-02

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