GB1486851A - Control valve having a pressure compensating spool - Google Patents

Control valve having a pressure compensating spool

Info

Publication number
GB1486851A
GB1486851A GB277/75A GB27775A GB1486851A GB 1486851 A GB1486851 A GB 1486851A GB 277/75 A GB277/75 A GB 277/75A GB 27775 A GB27775 A GB 27775A GB 1486851 A GB1486851 A GB 1486851A
Authority
GB
United Kingdom
Prior art keywords
pressure
spool
motor
fluid
jan
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
GB277/75A
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Publication of GB1486851A publication Critical patent/GB1486851A/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
    • 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
    • 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
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves

Abstract

1486851 Fluid-pressure servomotor CATERPILLAR TRACTOR CO 3 Jan 1975 [7 Jan 1974] 277/75 Heading G3P A fluid-pressure control system has a spool 58 in a housing 54; a working fluid-pressure source (such as pump 14) communicating with a highpressure inlet port, via line 20; a pair of motor ports for connection to a motor 16; the spool being reciprocably shiftable from a neutral position to selectively provide communication for highpressure to either of the motor ports. To shift the spool an independent source of pilot fluid-pressure (such as pump 48) is directed by a pilot valve 46, and to resist spool shifting a means (e.g. lines 86, 88 and pistons 78, 80) is provided responsive to motor port pressure. As shown a load check-valve 42 is provided in the high-pressure line. Also, relief valves 26, 28 and make-up valves 30, 32 are provided between motor pressure and exhaust lines. A spring 76 urges the spool to a neutral position.
GB277/75A 1974-01-07 1975-01-03 Control valve having a pressure compensating spool Expired GB1486851A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43136074A 1974-01-07 1974-01-07

Publications (1)

Publication Number Publication Date
GB1486851A true GB1486851A (en) 1977-09-28

Family

ID=23711593

Family Applications (1)

Application Number Title Priority Date Filing Date
GB277/75A Expired GB1486851A (en) 1974-01-07 1975-01-03 Control valve having a pressure compensating spool

Country Status (7)

Country Link
JP (1) JPS5097781A (en)
BE (1) BE821771A (en)
BR (1) BR7408834D0 (en)
CA (1) CA1014049A (en)
DE (1) DE2460993A1 (en)
FR (1) FR2257032B1 (en)
GB (1) GB1486851A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110260025A (en) * 2019-05-31 2019-09-20 陕西法士特齿轮有限责任公司 It is a kind of for controlling the proportion magnetic valve of clutch

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041983A (en) * 1975-07-09 1977-08-16 Caterpillar Tractor Co. Pressure controlled swing valve with safety feature
US4407122A (en) * 1981-05-18 1983-10-04 Vickers, Incorporated Power transmission
JPS62190173U (en) * 1986-05-24 1987-12-03
SE458704B (en) * 1987-05-18 1989-04-24 Atlas Copco Ab DEVICE FOR A HYDRAULIC DRIVE SYSTEM CONNECTED TO A LOAD DRIVING HYDRAULIC ENGINE
US4883091A (en) * 1988-12-27 1989-11-28 Ross Operating Valve Company Multi-port self-regulating proportional pressure control valve
CN103089727B (en) * 2011-10-31 2016-03-02 约克广州空调冷冻设备有限公司 Selector valve
DE102012001954A1 (en) * 2012-02-02 2013-08-08 Robert Bosch Gmbh Valve assembly with pilot pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110260025A (en) * 2019-05-31 2019-09-20 陕西法士特齿轮有限责任公司 It is a kind of for controlling the proportion magnetic valve of clutch
CN110260025B (en) * 2019-05-31 2024-02-06 陕西法士特齿轮有限责任公司 Proportional electromagnetic valve for controlling clutch

Also Published As

Publication number Publication date
CA1014049A (en) 1977-07-19
DE2460993A1 (en) 1975-07-10
BR7408834D0 (en) 1975-09-23
JPS5097781A (en) 1975-08-04
FR2257032B1 (en) 1981-03-20
FR2257032A1 (en) 1975-08-01
BE821771A (en) 1975-04-30

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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