GB1494400A - Device for hydraulic control of a centered multiposition directional control valve - Google Patents

Device for hydraulic control of a centered multiposition directional control valve

Info

Publication number
GB1494400A
GB1494400A GB46173/75A GB4617375A GB1494400A GB 1494400 A GB1494400 A GB 1494400A GB 46173/75 A GB46173/75 A GB 46173/75A GB 4617375 A GB4617375 A GB 4617375A GB 1494400 A GB1494400 A GB 1494400A
Authority
GB
United Kingdom
Prior art keywords
spool
pressure
directional control
control valve
valve
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
GB46173/75A
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.)
Nordhydraulic AB
Original Assignee
Nordhydraulic AB
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 Nordhydraulic AB filed Critical Nordhydraulic AB
Publication of GB1494400A publication Critical patent/GB1494400A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2271—Actuators and supports therefor and protection therefor
    • 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
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/0422—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with manually-operated pilot valves, e.g. joysticks

Abstract

1494400 Valves NORDHYDRAULIC AB 7 Nov 1975 [7 Nov 1974] 46173/75 Heading F2V [Also in Division G3] The pilot valve of a directional control valve (13) includes a spool 47 which is movable by a handle 18 through a spring 55 to connect a pressure supply conduit 45 with a proportional pressure outlet 50 through radial passages 64 and axial passage 63 to give a pressure at outlet 50 proportional to the movement of the spool and thus the handle. During this movement a spring-loaded detent ball 58 moves in a groove 59 of an actuating plunger 52. However, the ball can be caused to ride over the land 60 into groove 57 so as to hold the spool 47 in a position in which an outlet 53 is connected directly with the pressure supply conduit via the groove 62. The outlets 50, 53 are connected respectively to the chamber (40) of a single-acting actuating cylinder and a chamber (37) of a double-acting actuating cylinder the other chamber (36) of which is connected to an outlet 50 of a further spool valve of the pilot valve. The piston of the double-acting cylinder is directly connected to the spool of the directional control valve whereas it is connected by lost-motion with the piston of the single-acting cylinder. Pressure supplied to the chambers of the actuating cylinders cause the directional control valve spool to assume forward, reverse and float positions, the spool normally being held in an open-centre central position by a centring spring device. The pilot valve includes a further two spools which are used to actuate a further directional control valve. All of the pilot valve spools are normally biased to the position shown in which both the outlets 50, 53 are connected to drain conduit 46 via the passages in the spool, the connection being cut off by spool lands 65, 61 on downward movement of the spool. The detent ball may be released by an electromagnetically-operated valve 86, 87, which on movement to the left connects passages 77, 76 to connect supply pressure to the right of piston 82 to move it to the left to release the pressure on the ball 58.
GB46173/75A 1974-11-07 1975-11-07 Device for hydraulic control of a centered multiposition directional control valve Expired GB1494400A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7413991A SE397390B (en) 1974-11-07 1974-11-07 DEVICE FOR HYDRAULIC CONTROL OF CENTRATED MULTILEGE DIRECTION VALVE

Publications (1)

Publication Number Publication Date
GB1494400A true GB1494400A (en) 1977-12-07

Family

ID=20322639

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46173/75A Expired GB1494400A (en) 1974-11-07 1975-11-07 Device for hydraulic control of a centered multiposition directional control valve

Country Status (2)

Country Link
GB (1) GB1494400A (en)
SE (1) SE397390B (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2308000A1 (en) * 1975-04-18 1976-11-12 Wabco Westinghouse Gmbh HAND-OPERATED PILOT VALVE FOR A HYDRAULIC CONTROL UNIT
EP0056024A1 (en) * 1980-06-16 1982-07-21 Caterpillar Tractor Co Pressure reducing valve with floating stem for make-up vent.
US4342335A (en) * 1980-10-23 1982-08-03 Koehring Company Hydraulic valve detent mechanism
WO1983001820A1 (en) * 1981-11-20 1983-05-26 Melocik, Kurt, B. Single lever control with automatic valve latching
US4461320A (en) * 1981-07-09 1984-07-24 Fiat Allis Europe S.P.A. Manually operable hydraulic control device with hydraulic position retention
US4469007A (en) * 1981-11-20 1984-09-04 Caterpillar Tractor Co. Single lever control with automatic valve latching
US4566492A (en) * 1983-02-15 1986-01-28 Rexroth Sigma Fluid distributing device, more especially for remote control
FR2687205A1 (en) * 1992-02-10 1993-08-13 Rexroth Sigma Hydraulic fluid distributor device for hydraulic remote control
US5638866A (en) * 1996-03-01 1997-06-17 Dana Corporation Detent arrangement for holding hydraulic valve members stroked
DE3690051C1 (en) * 1985-02-23 1997-09-18 Barmag Barmer Maschf Proportional valve assembly with adjustable throttle
EP1052414A1 (en) * 1999-05-12 2000-11-15 Mannesmann Rexroth S.A. Fluid valve especially for hydraulic servocontrol
CN110005651A (en) * 2018-11-07 2019-07-12 柳工常州机械有限公司 A kind of handle pilot valve for bull-dozer and the bull-dozer with it
CN113586108A (en) * 2021-07-19 2021-11-02 北京天地玛珂电液控制系统有限公司 Electro-hydraulic control proportional reversing valve

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2308000A1 (en) * 1975-04-18 1976-11-12 Wabco Westinghouse Gmbh HAND-OPERATED PILOT VALVE FOR A HYDRAULIC CONTROL UNIT
EP0056024A1 (en) * 1980-06-16 1982-07-21 Caterpillar Tractor Co Pressure reducing valve with floating stem for make-up vent.
EP0056024A4 (en) * 1980-06-16 1983-10-06 Caterpillar Tractor Co Pressure reducing valve with floating stem for make-up vent.
US4342335A (en) * 1980-10-23 1982-08-03 Koehring Company Hydraulic valve detent mechanism
US4461320A (en) * 1981-07-09 1984-07-24 Fiat Allis Europe S.P.A. Manually operable hydraulic control device with hydraulic position retention
WO1983001820A1 (en) * 1981-11-20 1983-05-26 Melocik, Kurt, B. Single lever control with automatic valve latching
US4469007A (en) * 1981-11-20 1984-09-04 Caterpillar Tractor Co. Single lever control with automatic valve latching
US4566492A (en) * 1983-02-15 1986-01-28 Rexroth Sigma Fluid distributing device, more especially for remote control
DE3690051C1 (en) * 1985-02-23 1997-09-18 Barmag Barmer Maschf Proportional valve assembly with adjustable throttle
FR2687205A1 (en) * 1992-02-10 1993-08-13 Rexroth Sigma Hydraulic fluid distributor device for hydraulic remote control
US5638866A (en) * 1996-03-01 1997-06-17 Dana Corporation Detent arrangement for holding hydraulic valve members stroked
US5743297A (en) * 1996-03-01 1998-04-28 Dana Corporation Detent arrangement for holding hydraulic valve member stroked
EP1052414A1 (en) * 1999-05-12 2000-11-15 Mannesmann Rexroth S.A. Fluid valve especially for hydraulic servocontrol
FR2793532A1 (en) * 1999-05-12 2000-11-17 Mannesmann Rexroth Sa FLUID DISTRIBUTOR DEVICE, PARTICULARLY FOR HYDRAULIC REMOTE CONTROL
CN110005651A (en) * 2018-11-07 2019-07-12 柳工常州机械有限公司 A kind of handle pilot valve for bull-dozer and the bull-dozer with it
CN113586108A (en) * 2021-07-19 2021-11-02 北京天地玛珂电液控制系统有限公司 Electro-hydraulic control proportional reversing valve
CN113586108B (en) * 2021-07-19 2024-03-01 北京天玛智控科技股份有限公司 Electro-hydraulic control proportional reversing valve

Also Published As

Publication number Publication date
SE7413991L (en) 1976-05-10
SE397390B (en) 1977-10-31

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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