FR2380449A1 - Hydraulic drive unit with differential cylinder - uses rotary flow divider to compensate volumetric difference caused by piston adjustment (NL 15.8.78) - Google Patents

Hydraulic drive unit with differential cylinder - uses rotary flow divider to compensate volumetric difference caused by piston adjustment (NL 15.8.78)

Info

Publication number
FR2380449A1
FR2380449A1 FR7803818A FR7803818A FR2380449A1 FR 2380449 A1 FR2380449 A1 FR 2380449A1 FR 7803818 A FR7803818 A FR 7803818A FR 7803818 A FR7803818 A FR 7803818A FR 2380449 A1 FR2380449 A1 FR 2380449A1
Authority
FR
France
Prior art keywords
flow divider
rotary flow
drive unit
pump
conduit
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
FR7803818A
Other languages
French (fr)
Other versions
FR2380449B3 (en
Inventor
Siegfried Kiesow
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.)
CNH Industrial Baumaschinen GmbH
Original Assignee
O&K Orenstein and Koppel 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 O&K Orenstein and Koppel GmbH filed Critical O&K Orenstein and Koppel GmbH
Publication of FR2380449A1 publication Critical patent/FR2380449A1/en
Application granted granted Critical
Publication of FR2380449B3 publication Critical patent/FR2380449B3/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/005—With rotary or crank input
    • F15B7/006—Rotary pump input

Abstract

The drive has a differential cylinder connected to a closed loop hydraulic circuit, having a hydraulic tank and pump. The volumetric differfence during piston adjustment between the volume on the piston face side (4) and the piston rod side (6) is compensated by a rotary flow divider (11), connected to one of the main conduits (3, 5) between cylinder (1) and pump (2). The main stage (12) of the divider is in the conduit (3) between the cylinder space on the piston face side and the pump. The auxiliary stage (13) is located in a branch conduit (14) between the same cylinder space and the tank (8). Alternatively, the main stage may by in the conduit (5) between the cylinder space on the piston rod side (6) and the pump. The auxiliary stage is in a branch off this conduit.
FR7803818A 1977-02-12 1978-02-10 Hydraulic drive unit with differential cylinder - uses rotary flow divider to compensate volumetric difference caused by piston adjustment (NL 15.8.78) Granted FR2380449A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772706091 DE2706091A1 (en) 1977-02-12 1977-02-12 DRIVE WITH A DIFFERENTIAL CYLINDER CONNECTED TO A CLOSED HYDRAULIC CIRCUIT

Publications (2)

Publication Number Publication Date
FR2380449A1 true FR2380449A1 (en) 1978-09-08
FR2380449B3 FR2380449B3 (en) 1980-04-04

Family

ID=6001086

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7803818A Granted FR2380449A1 (en) 1977-02-12 1978-02-10 Hydraulic drive unit with differential cylinder - uses rotary flow divider to compensate volumetric difference caused by piston adjustment (NL 15.8.78)

Country Status (8)

Country Link
JP (1) JPS53118681A (en)
AT (1) AT363747B (en)
BR (1) BR7800811A (en)
DE (1) DE2706091A1 (en)
FR (1) FR2380449A1 (en)
NL (1) NL7801487A (en)
NO (1) NO780469L (en)
SE (1) SE7801531L (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314660A1 (en) * 1987-10-28 1989-05-03 BT Industries Aktiebolag A hydraulic lifting arrangement
WO2004040065A1 (en) * 2002-10-28 2004-05-13 Bosch Rexroth Ag Damping device
WO2005026559A1 (en) * 2003-09-10 2005-03-24 Bosch Rexroth Ag Hydrostatic gear

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57116913A (en) * 1981-01-10 1982-07-21 Hitachi Constr Mach Co Ltd Hydraulic drive unit for single rod type cylinder
DE3112140C2 (en) * 1981-03-27 1986-01-23 Bültmann KG, 5982 Neuenrade Hydraulic drive of a drawing machine for tubes and bars
US4669266A (en) * 1983-10-05 1987-06-02 Kubik, Inc. Closed-loop system for unequal displacement cylinder
US4953639A (en) * 1989-09-08 1990-09-04 Ingersoll-Rand Company Closed loop hydraulic drill feed system
DE4008792A1 (en) * 1990-03-19 1991-09-26 Rexroth Mannesmann Gmbh DRIVE FOR A HYDRAULIC CYLINDER, IN PARTICULAR DIFFERENTIAL CYLINDER
DE10303360A1 (en) * 2003-01-29 2004-08-19 O & K Orenstein & Koppel Gmbh Hydraulic system for displacement-controlled linear drives
DE10343016B4 (en) * 2003-09-17 2010-08-26 Brueninghaus Hydromatik Gmbh Hydraulic control and positioning system with volume compensation
CN102878141B (en) * 2012-10-27 2014-11-19 郑州宇通重工有限公司 Combined type rotary motor reversion-preventing buffering balanced valve
GB2529909B (en) 2014-09-30 2016-11-23 Artemis Intelligent Power Ltd Industrial system with synthetically commutated variable displacement fluid working machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314660A1 (en) * 1987-10-28 1989-05-03 BT Industries Aktiebolag A hydraulic lifting arrangement
WO2004040065A1 (en) * 2002-10-28 2004-05-13 Bosch Rexroth Ag Damping device
WO2005026559A1 (en) * 2003-09-10 2005-03-24 Bosch Rexroth Ag Hydrostatic gear

Also Published As

Publication number Publication date
DE2706091A1 (en) 1978-08-17
JPS53118681A (en) 1978-10-17
BR7800811A (en) 1978-09-19
NL7801487A (en) 1978-08-15
ATA95178A (en) 1981-01-15
NO780469L (en) 1978-08-15
SE7801531L (en) 1978-08-13
FR2380449B3 (en) 1980-04-04
AT363747B (en) 1981-08-25

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Legal Events

Date Code Title Description
ST Notification of lapse