GB1115379A - Improvements in or relating to fluid control valves - Google Patents

Improvements in or relating to fluid control valves

Info

Publication number
GB1115379A
GB1115379A GB24347/66A GB2434766A GB1115379A GB 1115379 A GB1115379 A GB 1115379A GB 24347/66 A GB24347/66 A GB 24347/66A GB 2434766 A GB2434766 A GB 2434766A GB 1115379 A GB1115379 A GB 1115379A
Authority
GB
United Kingdom
Prior art keywords
valve
spool
line
chamber
pressure
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
GB24347/66A
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.)
Westinghouse Bremsen und Apparatebau GmbH
Original Assignee
Westinghouse Bremsen und Apparatebau 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 Westinghouse Bremsen und Apparatebau GmbH filed Critical Westinghouse Bremsen und Apparatebau GmbH
Publication of GB1115379A publication Critical patent/GB1115379A/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
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • 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
    • F15B2211/30525—Directional control valves, e.g. 4/3-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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • 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
    • F15B2211/30—Directional control
    • F15B2211/355—Pilot pressure 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief 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
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5156—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a return line and a directional control valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86622—Motor-operated
    • Y10T137/8663—Fluid motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1,115,379. Hydraulic control circuits. WESTINGHOUSE BREMSEN-UND APPARATEBAU G. m. b. H. June 1, 1966 [June 4, 1965], No. 24347/66. Heading F1P. The centrally spring-biassed manually operated spool of an open centre valve 3, Fig. 1 for controlling supply and exhaust of hydraulic fluid to and from a double acting cylinder 2 is held in either of its operative end positions during a stroke of the cylinder 2 by admission of at least part of the exhaust fluid in say line 4 through a gap formed between an edge 25, Fig. 3, on an end 13 of the spool and an edge 26 of a recess 19 in the valve body into which line 4 leads and which is itself connected through said gap to a chamber 16 so as to act against a plunger disc 14 on the end 13 of the valve spool; the chamber 16 being connected through a restriction 18 and a line 7 to a reservoir and the recess 19 being connected through a pressure limiting valve 12 to said reservoir. The restriction 18 and limiting valve 12 normally cooperate to provide the necessary back pressure in chamber 16 to maintain the spool in an operative end position but in the event of any reduction in pressure in line 4 allows the pressure in chamber 16 to fall and the spool to be returned to its central neutral position. A further double-acting cylinder 20 controlled by a spool valve 3a may be arranged in parallel with valve 3 and cylinder 2 and is supplied by a pump 1 delivering through a common line 6 provided with a relief valve 8.
GB24347/66A 1965-06-04 1966-06-01 Improvements in or relating to fluid control valves Expired GB1115379A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW0039287 1965-06-04

Publications (1)

Publication Number Publication Date
GB1115379A true GB1115379A (en) 1968-05-29

Family

ID=7602061

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24347/66A Expired GB1115379A (en) 1965-06-04 1966-06-01 Improvements in or relating to fluid control valves

Country Status (2)

Country Link
US (1) US3415166A (en)
GB (1) GB1115379A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2338404A1 (en) * 1976-01-16 1977-08-12 Bosch Gmbh Robert CONTROL DEVICE FOR AT LEAST TWO HYDRAULIC CONSUMERS SUPPLIED BY A SOURCE OF FLUID

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3566747A (en) * 1969-02-14 1971-03-02 Chambersburg Eng Co Self-regulating expansion type control valve
US4793238A (en) * 1987-07-01 1988-12-27 Caterpillar Inc. Control signal blocking direction control valve in load-sensing circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2864402A (en) * 1956-01-06 1958-12-16 Bendix Aviat Corp Motor control valve with automatic hold and release

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2338404A1 (en) * 1976-01-16 1977-08-12 Bosch Gmbh Robert CONTROL DEVICE FOR AT LEAST TWO HYDRAULIC CONSUMERS SUPPLIED BY A SOURCE OF FLUID

Also Published As

Publication number Publication date
DE1500300B2 (en) 1970-11-19
US3415166A (en) 1968-12-10
DE1500300A1 (en) 1969-05-08

Similar Documents

Publication Publication Date Title
GB1040379A (en) Fluid motor control system
GB1126873A (en) Improvements in hydraulic supply and control systems
GB1387773A (en) Fluid valve assemblies
GB1206381A (en) Anti-cavitation means for hydraulic motors
GB1212072A (en) Hydraulic control circuits
GB1115379A (en) Improvements in or relating to fluid control valves
GB915036A (en) Fluid circuits
GB1221529A (en) Control valve
GB1115725A (en) Hydraulic cushion for dies
GB1122219A (en) Fluid flow control valves
GB1098628A (en) Improvements in or relating to advancing roof supports
GB1097577A (en) Improvements in tractor hydraulic control systems
GB1381832A (en) Hydraulic control device for loadindependent flow control
GB1034108A (en) Improvements in or relating to apparatus for controlling a fluid power motor
GB1262075A (en) Systems for operating internal combustion engine valves by means of fluid pressure
GB1422939A (en) Hydraulic valves
ES361480A1 (en) Pump cylinder for hydraulic brakes. (Machine-translation by Google Translate, not legally binding)
GB1314389A (en) Pilot operated control valve
GB1513171A (en) Hydraulic control systems
GB903754A (en) Hydraulic control system
GB1374523A (en) Electrohydraulic stepping motor
GB1078139A (en) Improvements in or relating to hydraulic control apparatus
GB1078138A (en) Improvements in or relating to hydraulic control apparatus
GB1514489A (en) Hydraulic cab-tilting systems
GB1022491A (en) Improvements in or relating to hydraulic control devices for agricultural implements