EP2672125A2 - Système hydraulique destiné à l'alimentation en pression sécurisée d'au moins un consommateur - Google Patents

Système hydraulique destiné à l'alimentation en pression sécurisée d'au moins un consommateur Download PDF

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Publication number
EP2672125A2
EP2672125A2 EP13001739.5A EP13001739A EP2672125A2 EP 2672125 A2 EP2672125 A2 EP 2672125A2 EP 13001739 A EP13001739 A EP 13001739A EP 2672125 A2 EP2672125 A2 EP 2672125A2
Authority
EP
European Patent Office
Prior art keywords
pressure
pump
hydraulic system
consumer
steering
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
EP13001739.5A
Other languages
German (de)
English (en)
Other versions
EP2672125A3 (fr
EP2672125B1 (fr
Inventor
Josef Scholl
Heinz-Peter Huth
Marc Anton
Markus Mohrbacher
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.)
Hydac Systems and Services GmbH
Original Assignee
Hydac System 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 Hydac System GmbH filed Critical Hydac System GmbH
Publication of EP2672125A2 publication Critical patent/EP2672125A2/fr
Publication of EP2672125A3 publication Critical patent/EP2672125A3/fr
Application granted granted Critical
Publication of EP2672125B1 publication Critical patent/EP2672125B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/162—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for giving priority to particular servomotors or users
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • F15B2211/20584—Combinations of pumps with high and low capacity
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/265—Control of multiple pressure sources
    • F15B2211/2654—Control of multiple pressure sources one or more pressure sources having priority
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5151—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a directional control valve
    • F15B2211/5152—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a directional control valve being connected to multiple pressure sources
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members
    • F15B2211/781—Control of multiple output members one or more output members having priority

Definitions

  • the invention relates to a hydraulic system for safe pressure supply of at least one consumer, with a fixed displacement pump, which provides a flow for the consumer.
  • the invention has for its object to provide a fixed displacement pump containing a hydraulic system is available, which allows in a particularly economical way a safe pressure supply consumer concerned.
  • the arrangement can be made in this respect so that the valve piston of the pressure balance on the one hand, the pressure of the fixed displacement pump, and thus the pressure at the supply port of the steering, and on the other hand, the load pressure of the steering plus a spring pressure pending, via the pressure compensator with the auxiliary pump the supply port of the steering is connected at control positions of the pressure compensator, in which the pressure of the constant pump is less than the load pressure plus the spring pressure.
  • the supply of the consumer normally takes place by the constant pump, as long as they can maintain the pressure balance between the supply pressure of the steering and the load pressure, plus the pressure acting on the pressure balance spring pressure on the pressure balance.
  • the pressure of the control pump is also effective on the pressure balance and counteracts the sliding force formed by the load pressure of the steering and the spring pressure, the steering is because of Individual pressure compensator function only supplied with the required steering pressure.
  • a consumer of lower priority for example in the form of a cooler, may be arranged.
  • the system has a fixed displacement pump 3 and a control pump 5.
  • the fixed displacement pump 3 is formed by a gear pump, and as a control pump 5, a volume flow controlled piston pump is provided.
  • the pressure-side outlet of the fixed displacement pump 3 is connected to the supply connection PL of the steering 1 via a supply line 7.
  • This has, in addition to the supply connection PL, a load-sensing connection LS which carries the respective load pressure.
  • a tank connection T of the steering 1 is connected to the tank.
  • the shuttle valve 29 compares the pending on the connecting line 27 load pressure of the steering 1 with the highest load pressure of the other consumer, which is present at the load pressure line 31, and reports the respectively dominant pressure to the regulator port 35 of the control pump 5. This regulates the supply pressure in the supply line. 9 , which is present at the terminal 7 of the pressure compensator 11, at least the load pressure of the steering 1 plus control pressure difference of the regulator of the control pump. 5
  • the control pump 5 can be regulated to an output pressure which is substantially above the required supply pressure of the steering 1.
  • the terminals 17 and 19 and the check valve 21 and the supply line 7 is also present at the inflow side terminal 13 and thus on the control line 15 and the valve piston of the pressure compensator 11 is effective, the steering is the 1st regardless of the pump pressure of the control pump 5 supplied only with the supply pressure corresponding to the prevailing load pressure of the steering 1 plus the pressure of the spring 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
EP13001739.5A 2012-06-08 2013-04-05 Système hydraulique destiné à l'alimentation en pression sécurisée d'au moins un consommateur Active EP2672125B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012011400A DE102012011400A1 (de) 2012-06-08 2012-06-08 Hydrauliksystem zur sicheren Druckversorgung mindestens eines Verbrauchers

Publications (3)

Publication Number Publication Date
EP2672125A2 true EP2672125A2 (fr) 2013-12-11
EP2672125A3 EP2672125A3 (fr) 2017-12-27
EP2672125B1 EP2672125B1 (fr) 2021-09-01

Family

ID=48087349

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13001739.5A Active EP2672125B1 (fr) 2012-06-08 2013-04-05 Système hydraulique destiné à l'alimentation en pression sécurisée d'au moins un consommateur

Country Status (2)

Country Link
EP (1) EP2672125B1 (fr)
DE (1) DE102012011400A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015109508A1 (de) 2015-06-15 2016-12-15 Robert Bosch Automotive Steering Gmbh Hydraulische Pumpenanordnung, insbesondere für ein Lenksystem eines Kraftfahrzeugs
CN106836337A (zh) * 2017-03-30 2017-06-13 徐州徐工筑路机械有限公司 一种平地机变量液压系统
DE102017004634A1 (de) * 2017-05-15 2018-11-15 Hydac Systems & Services Gmbh Steuervorrichtung zum Versorgen mindestens eines hydraulischen Verbrauchers
CN112922914A (zh) * 2021-01-12 2021-06-08 盾构及掘进技术国家重点实验室 一种盾构掘进机管片拼装高效精密同步提升液压控制系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016105159B4 (de) * 2016-03-21 2025-10-09 Claas Industrietechnik Gmbh Hydrauliksystem eines land- oder bauwirtschaftlich nutzbaren Fahrzeugs
CN118686817B (zh) * 2024-07-04 2025-12-26 潍柴动力股份有限公司 一种液压控制阀系统及装载机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3608469A1 (de) * 1986-03-14 1987-10-01 Bosch Gmbh Robert Hydraulikanlage
DE4129508C2 (de) * 1991-09-05 1994-12-15 Rexroth Mannesmann Gmbh Ventilanordnung zur Versorgung eines Verbrauchers aus zwei Druckmittelquellen
US5918558A (en) * 1997-12-01 1999-07-06 Case Corporation Dual-pump, flow-isolated hydraulic circuit for an agricultural tractor
AT3427U1 (de) * 1998-09-25 2000-03-27 Steyr Daimler Puch Ag Hydraulisches system für ackerschlepper und selbstfahrende arbeitsmaschinen
DE10315496A1 (de) * 2003-04-04 2004-10-21 Linde Ag Hydrauliksystem für ein batterie-elektrisch betriebenes Flurförderzeug

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015109508A1 (de) 2015-06-15 2016-12-15 Robert Bosch Automotive Steering Gmbh Hydraulische Pumpenanordnung, insbesondere für ein Lenksystem eines Kraftfahrzeugs
CN106836337A (zh) * 2017-03-30 2017-06-13 徐州徐工筑路机械有限公司 一种平地机变量液压系统
DE102017004634A1 (de) * 2017-05-15 2018-11-15 Hydac Systems & Services Gmbh Steuervorrichtung zum Versorgen mindestens eines hydraulischen Verbrauchers
WO2018210550A1 (fr) * 2017-05-15 2018-11-22 Hydac Systems & Services Gmbh Dispositif de commande servant à alimenter au moins un consommateur hydraulique en fluide
US11168710B2 (en) 2017-05-15 2021-11-09 Hydac Systems & Services Gmbh Control apparatus for supplying at least one hydraulic consumer with fluid
CN112922914A (zh) * 2021-01-12 2021-06-08 盾构及掘进技术国家重点实验室 一种盾构掘进机管片拼装高效精密同步提升液压控制系统

Also Published As

Publication number Publication date
DE102012011400A1 (de) 2013-12-12
EP2672125A3 (fr) 2017-12-27
EP2672125B1 (fr) 2021-09-01

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