EP0953767A3 - Hydrostatic machine - Google Patents

Hydrostatic machine Download PDF

Info

Publication number
EP0953767A3
EP0953767A3 EP99107900A EP99107900A EP0953767A3 EP 0953767 A3 EP0953767 A3 EP 0953767A3 EP 99107900 A EP99107900 A EP 99107900A EP 99107900 A EP99107900 A EP 99107900A EP 0953767 A3 EP0953767 A3 EP 0953767A3
Authority
EP
European Patent Office
Prior art keywords
cylinders
opening
pressure
pressure control
control
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
EP99107900A
Other languages
German (de)
French (fr)
Other versions
EP0953767B1 (en
EP0953767A2 (en
Inventor
Jörg Dantlgraber
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.)
Bosch Rexroth AG
Original Assignee
Mannesmann Rexroth 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 Mannesmann Rexroth AG filed Critical Mannesmann Rexroth AG
Publication of EP0953767A2 publication Critical patent/EP0953767A2/en
Publication of EP0953767A3 publication Critical patent/EP0953767A3/en
Application granted granted Critical
Publication of EP0953767B1 publication Critical patent/EP0953767B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2042—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

Die Kolben (5) einer hydrostatischen Maschine (1) sind in Zylindern (4) bewegbar und einer zyklischen Hubbewegung unterworfen. Ein Steuerkörper (12) weist eine Niederdruck-Steueröffnung (13) und eine Hochdruck-Steueröffnung (14) auf, um die Zylinder (4) zyklisch, alternierend mit einer Niederdruckleitung und einer Hochdruckleitung zu verbinden. Ferner weist der Steuerkörper (12) eine Zusatzöffnung (20) zum Beaufschlagen der Zylinder (4) mit einem vorkomprimierten Druckmedium auf. Erfindungsgemäß ist die Zusatzöffnung (20) mit einer geregelten oder gesteuerten Vorkompressionseinrichtung (23) verbunden, die durch eine Regel- oder Steuereinrichtung (24) so angesteuert wird, daß sich in den Zylindern (4) beim Übergang von der Niederdruck-Steueröffnung (13) zu der Hochdruck-Steueröffnung (14) ein kontinuierlicher, stetiger Druckaufbau einstellt.

Figure 00000001
The pistons (5) of a hydrostatic machine (1) can be moved in cylinders (4) and are subjected to a cyclical lifting movement. A control body (12) has a low pressure control opening (13) and a high pressure control opening (14) in order to connect the cylinders (4) cyclically, alternately with a low pressure line and a high pressure line. The control body (12) also has an additional opening (20) for loading the cylinders (4) with a pre-compressed pressure medium. According to the invention, the additional opening (20) is connected to a regulated or controlled pre-compression device (23) which is controlled by a regulating or control device (24) in such a way that in the cylinders (4) during the transition from the low-pressure control opening (13) to the high-pressure control opening (14) sets a continuous, steady pressure build-up.
Figure 00000001
EP99107900A 1998-04-27 1999-04-21 Hydrostatic machine Expired - Lifetime EP0953767B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19818721 1998-04-27
DE19818721A DE19818721A1 (en) 1998-04-27 1998-04-27 Hydrostatic machine

Publications (3)

Publication Number Publication Date
EP0953767A2 EP0953767A2 (en) 1999-11-03
EP0953767A3 true EP0953767A3 (en) 2000-08-09
EP0953767B1 EP0953767B1 (en) 2004-07-14

Family

ID=7865901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99107900A Expired - Lifetime EP0953767B1 (en) 1998-04-27 1999-04-21 Hydrostatic machine

Country Status (2)

Country Link
EP (1) EP0953767B1 (en)
DE (2) DE19818721A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107795448A (en) * 2016-08-29 2018-03-13 罗伯特·博世有限公司 Hydraulic static axial piston engine

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10034857A1 (en) * 2000-07-18 2002-01-31 Liebherr Machines Bulle S A Hydrostatic axial piston machine
DE10135800B4 (en) * 2001-07-23 2007-08-16 Sauer-Danfoss (Neumünster) GmbH & Co OHG Pressure medium unit with continuously controllable flow cross section in the reversal
DE102008062483A1 (en) * 2008-12-16 2010-06-17 Robert Bosch Gmbh Axial piston machine with pulsation reduction
DE102011117081A1 (en) * 2011-10-27 2013-05-02 Robert Bosch Gmbh Hydrostatic piston machine
DE102014208406A1 (en) * 2014-05-06 2015-11-12 Robert Bosch Gmbh Hydrostatic piston machine
DE102018205884A1 (en) 2018-04-18 2019-10-24 Robert Bosch Gmbh Axial piston machine with pressure relief in the Durchtriebsraum
DE102018218548A1 (en) * 2018-10-30 2020-04-30 Robert Bosch Gmbh Hydrostatic piston machine
DE102020212372A1 (en) 2020-09-30 2022-03-31 Robert Bosch Gesellschaft mit beschränkter Haftung Hydrostatic axial piston machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62135674A (en) * 1985-12-09 1987-06-18 Hitachi Constr Mach Co Ltd Hydraulic pump and motor device
US5555726A (en) * 1995-03-31 1996-09-17 Caterpillar Inc. Attenuation of fluid borne noise from hydraulic piston pumps
US5572919A (en) * 1992-12-22 1996-11-12 Kabushiki Kaisha Komatsu Seisakusho Apparatus for controlling pressure in a cylinder chamber of a hydraulic pump-motor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3199461A (en) * 1963-05-27 1965-08-10 Cessna Aircraft Co Hydraulic pump or motor
FR2110550A5 (en) 1970-10-21 1972-06-02 Citroen Sa
DE2208890A1 (en) 1972-02-25 1973-09-06 Bosch Gmbh Robert AXIAL PISTON PUMP
US4175914A (en) * 1977-05-31 1979-11-27 The Cessna Aircraft Company Hydraulic stop
DE3700573A1 (en) * 1987-01-10 1988-07-21 Bosch Gmbh Robert Piston machine, in particular axial or radial piston machine
DE3800900A1 (en) * 1988-01-14 1989-07-27 Rexroth Mannesmann Gmbh Circuit arrangement for controlling the rotational speed of a hydrostatic machine
SE507637C2 (en) * 1991-09-06 1998-06-29 Parker Hannifin Ab Method and apparatus for damping flow pulsations in hydrostatic displacement hydraulic machines and apparatus for carrying out the method
DE4407282C2 (en) * 1994-03-04 1996-04-18 Hydromatik Gmbh Hydrostatic drive
US5492451A (en) * 1994-10-03 1996-02-20 Caterpillar Inc. Apparatus and method for attenuation of fluid-borne noise

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62135674A (en) * 1985-12-09 1987-06-18 Hitachi Constr Mach Co Ltd Hydraulic pump and motor device
US5572919A (en) * 1992-12-22 1996-11-12 Kabushiki Kaisha Komatsu Seisakusho Apparatus for controlling pressure in a cylinder chamber of a hydraulic pump-motor
US5555726A (en) * 1995-03-31 1996-09-17 Caterpillar Inc. Attenuation of fluid borne noise from hydraulic piston pumps

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 011, no. 356 (M - 644) 20 November 1987 (1987-11-20) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107795448A (en) * 2016-08-29 2018-03-13 罗伯特·博世有限公司 Hydraulic static axial piston engine

Also Published As

Publication number Publication date
DE19818721A1 (en) 1999-10-28
EP0953767B1 (en) 2004-07-14
EP0953767A2 (en) 1999-11-03
DE59909934D1 (en) 2004-08-19

Similar Documents

Publication Publication Date Title
CH529587A (en) Device for the production of blocks
EP0953767A3 (en) Hydrostatic machine
EP1318906A1 (en) Controller for a hydraulic press and method for the operation thereof
EP0789147A3 (en) High-pressure plunger pump, working preferably at pressures above 2000 bars
EP0114924A2 (en) Device for the treatment of tubular blanks by hydroforming
DE2816078A1 (en) HYDRAULICS TO EXERCISE AND MOVE A MOMENT
DE1627421A1 (en) Forming machine that can be operated both as a hammer and as a press
EP0992376A3 (en) Stabilizing device for a vehicle
EP0629455B1 (en) Main drive for upsetting press
DE2728982A1 (en) METHOD OF CONTROLLING THE SPEED OF A MECHANICAL PRESS
DE19528558A1 (en) Procedure for operating hydraulic press - piston chamber of actuating unit connected to hydraulic accumulator so that volume of piston chamber during descending stroke of press slide is transferred to accumulator
ATE174239T1 (en) PRESS
EP0491750A1 (en) Control device for hydraulic working cylinders of a loading board wall of a vehicle.
EP0935069A3 (en) Hydrostatic axial piston machine with opening for medium pressure in the control plate
DE3525003A1 (en) Method and device for conveying concrete from a container into a delivery pipe
EP0326980A3 (en) Hydraulic press
EP0323591A3 (en) Double-point timing device
DE69100302T2 (en) Liquid pump with a reciprocating piston.
WO2002070822B1 (en) Method and device for mounting a concrete component
DE29824739U1 (en) Device for producing a punch rivet connection
DE951849C (en) Forging press with driving device, pump and discharge device
EP1013927A3 (en) Hydrostatic piston machine
EP0296145A3 (en) Process and arrangement for feeding a pressure compartment
EP1041279A3 (en) Valve plate for axial piston machine
DE102017103091B4 (en) machine press

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Free format text: 7F 04B 11/00 A, 7F 04B 1/20 B

17P Request for examination filed

Effective date: 20010209

AKX Designation fees paid

Free format text: DE FR GB IT SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BOSCH REXROTH AG

17Q First examination report despatched

Effective date: 20030729

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 59909934

Country of ref document: DE

Date of ref document: 20040819

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040907

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20050415

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20091222

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20100324

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20100506

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20100427

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20100624

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59909934

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59909934

Country of ref document: DE

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110421

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20111230

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110502

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110421

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110421

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110422

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111031