GB1387367A - Control device for an hydraulically actuated implement - Google Patents

Control device for an hydraulically actuated implement

Info

Publication number
GB1387367A
GB1387367A GB2888973A GB2888973A GB1387367A GB 1387367 A GB1387367 A GB 1387367A GB 2888973 A GB2888973 A GB 2888973A GB 2888973 A GB2888973 A GB 2888973A GB 1387367 A GB1387367 A GB 1387367A
Authority
GB
United Kingdom
Prior art keywords
fluid
valve
spool
ducts
connects
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.)
Expired
Application number
GB2888973A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1387367A publication Critical patent/GB1387367A/en
Expired 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • 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
    • 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • 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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
    • 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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/329—Directional control characterised by the type of actuation actuated by fluid 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41509—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a directional control valve
    • 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41581—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a return line
    • 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
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid 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
    • F15B2211/40—Flow control
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
    • 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
    • F15B2211/40—Flow control
    • F15B2211/46—Control of flow in the return line, i.e. meter-out control
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • 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
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7052—Single-acting output members
    • 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
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Fluid-Driven Valves (AREA)
  • Lifting Devices For Agricultural Implements (AREA)

Abstract

1387367 Hydraulic control circuits ROBERT BOSCH GmbH 18 June 1973 [5 July 1972] 28889/73 Heading F1P [Also in Division F2] In the circuit shown, Fig.1, when a selector switch 56 is in a neutral position, fluid from a pump 4 flows through ducts 3, 28, 29, 41, and 42 into a chamber 23 so that a spool 13 of a changeover valve 12 is moved to the left. This connects a passage 19 to the inlet 3 so that an auxiliary load 20 can be operated. To pressurize a main actuator 35, the selector 56 is moved to the right to energize an electromagnet 26 which controls a pilot valve 27. This connects the chamber 23 with a return duct 31 allowing the spool 13 to move to the right. When this occurs the passage between ducts 3, 19 is rapidly closed by a band 17'. Fluid now flows through a duct 22 to a non-return valve 32. As pressure builds up the valve opens so that fluid is supplied to the main actuator 35. Movement of the valve 32 to the left also closes the connection between ducts 41, 42 so that fluid flowing to the reservoir from the chamber 23 is throttled by a restriction 30. This damps movement of the spool 13. Further damping is provided when the end of the spool enters a recess 24 and fluid is forced out through a groove 25. To lower the load the selector 56 is moved to the left to energize a solenoid 48 which controls a pilot valve 49. This connects a duct 47 to the reservoir thereby creating a pressure drop across a lowering valve 44 as fluid flows through a restriction 46. This ultimately opens the valve to connect the actuator 35 to drain. This allows fluid to escape slowly from a cylinder 50 through an aperture 51. Figs. 2 and 3 (not shown), illustrate similar circuits in which the pilot valves 27, 49 are operated mechanically or by fluid-pressure.
GB2888973A 1972-07-05 1973-06-18 Control device for an hydraulically actuated implement Expired GB1387367A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2232857A DE2232857C2 (en) 1972-07-05 1972-07-05 Control device for a hydraulically driven implement

Publications (1)

Publication Number Publication Date
GB1387367A true GB1387367A (en) 1975-03-19

Family

ID=5849695

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2888973A Expired GB1387367A (en) 1972-07-05 1973-06-18 Control device for an hydraulically actuated implement

Country Status (11)

Country Link
US (1) US3906838A (en)
JP (1) JPS4944177A (en)
AT (1) AT322249B (en)
BE (1) BE801922A (en)
BR (1) BR7304958D0 (en)
CH (1) CH553926A (en)
DE (1) DE2232857C2 (en)
FR (1) FR2191041B1 (en)
GB (1) GB1387367A (en)
IT (1) IT990927B (en)
SE (1) SE381921B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276810A (en) * 1972-11-08 1981-07-07 Control Concepts, Inc. Programmed valve system used for positioning control
US4102250A (en) * 1976-08-16 1978-07-25 Caterpillar Tractor Co. Load check and bypass valve
DE2735559C2 (en) * 1977-08-06 1986-10-30 Robert Bosch Gmbh, 7000 Stuttgart Electro-hydraulic control unit for a hydraulically driven work device
DE2735558A1 (en) * 1977-08-06 1979-02-15 Bosch Gmbh Robert CONTROL UNIT FOR HYDRAULIC WORK EQUIPMENT
DE3016043A1 (en) * 1977-10-14 1980-11-20 Control Concepts Multiple-ranoe hydraulic valve - includes branch line acting as pressure sensor with one-way valve
US4194532A (en) * 1978-04-10 1980-03-25 Caterpillar Tractor Co. Control valve with bypass means
DE2816212A1 (en) * 1978-04-14 1979-10-25 Bosch Gmbh Robert CONTROL UNIT FOR A HYDRAULIC WORK UNIT
DE2904293A1 (en) * 1979-02-05 1980-08-07 Claas Ohg HYDRAULIC CONTROL VALVE
DE3011088A1 (en) * 1979-03-26 1980-10-09 Sperry Corp HYDRAULIC DRIVE CONTROL
SE418523B (en) * 1979-07-20 1981-06-09 Mecman Ab VALVE DEVICE FOR CONNECTING TO A PRESSURE CELL AND CONTROLLED PRESSURE SUPPLY TO AND PRESSURE BUILDING IN A PRESSURE SYSTEM
US4345736A (en) * 1981-01-21 1982-08-24 Control Concepts, Inc. Solenoid operated valve and dashpot assembly
US4494571A (en) * 1982-11-08 1985-01-22 Wabco Fahrzeugbremsen Gmbh Electropneumatic door control valve
DE3922553C2 (en) * 1989-07-08 2002-03-14 Mannesmann Rexroth Ag Device for relieving a working space filled with hydraulic fluid under high pressure
DE3928272A1 (en) * 1989-08-26 1991-02-28 Kloeckner Humboldt Deutz Ag Hydraulic control circuit for tractor mounted machinery - has control valve to product main equipment from peak pressures
DE4000801C1 (en) * 1990-01-12 1991-02-21 Hydromatik Gmbh, 7915 Elchingen, De
DE4007804A1 (en) * 1990-03-12 1991-09-19 Kloeckner Humboldt Deutz Ag Control device for agricultural tool hydraulic hoist - uses controlled non-return valve connected to hydraulic line for hydraulic lifting cylinder
EP2603705A4 (en) * 2010-08-09 2017-04-05 Parker Hannifin Manufacturing Sweden AB Hydraulic control system
WO2014062142A1 (en) * 2012-10-19 2014-04-24 Hema Endüstri̇ Anoni̇m Şi̇rketi̇ System preventing pressured oil leakage to cylinder line in control valve systems with flow divider
CN107131166B (en) * 2017-01-23 2019-03-05 江苏恒立液压科技有限公司 Single axle Hydraulic guide control valve

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US822306A (en) * 1903-01-12 1906-06-05 Fred Adee Company Flushing device.
DE710705C (en) * 1937-11-19 1941-09-19 Hahn & Kolb Method and device for controlling two or more working cylinders operated with fluid pressure
DE1183789B (en) * 1960-04-08 1964-12-17 Webster Electric Co Inc Fluid divider valve for pressure medium systems with several consumers
GB1133974A (en) * 1966-04-04 1968-11-20 Hamilton Thomas William Improvements in pneumatic control devices
US3465519A (en) * 1967-08-18 1969-09-09 Webster Electric Co Inc Hydraulic flow controlling apparatus
GB1251474A (en) * 1969-05-16 1971-10-27
JPS4836015B1 (en) * 1969-06-05 1973-11-01
US3654837A (en) * 1969-12-29 1972-04-11 Abex Corp Hydraulic control systems
DE2034214C3 (en) * 1970-07-10 1981-11-12 Robert Bosch Gmbh, 7000 Stuttgart Pilot operated directional valve for a hydraulic servo motor
US3789739A (en) * 1971-08-02 1974-02-05 Cessna Aircraft Co Remote hydraulic control

Also Published As

Publication number Publication date
SE381921B (en) 1975-12-22
US3906838A (en) 1975-09-23
DE2232857A1 (en) 1974-01-17
CH553926A (en) 1974-09-13
FR2191041B1 (en) 1978-02-10
BR7304958D0 (en) 1974-08-15
FR2191041A1 (en) 1974-02-01
BE801922A (en) 1973-11-05
DE2232857C2 (en) 1983-11-24
IT990927B (en) 1975-07-10
JPS4944177A (en) 1974-04-25
AT322249B (en) 1975-05-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee