GB1008324A - Fluid flow control valve - Google Patents

Fluid flow control valve

Info

Publication number
GB1008324A
GB1008324A GB31990/64A GB3199064A GB1008324A GB 1008324 A GB1008324 A GB 1008324A GB 31990/64 A GB31990/64 A GB 31990/64A GB 3199064 A GB3199064 A GB 3199064A GB 1008324 A GB1008324 A GB 1008324A
Authority
GB
United Kingdom
Prior art keywords
boom
chambers
fluid
reservoir
check 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
GB31990/64A
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.)
New York Air Brake LLC
Original Assignee
New York Air Brake LLC
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 New York Air Brake LLC filed Critical New York Air Brake LLC
Publication of GB1008324A publication Critical patent/GB1008324A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/16—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs
    • 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • 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
    • F15B13/021—Valves for interconnecting the fluid chambers of an actuator
    • 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
    • F15B13/0403—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves a secondary valve member sliding within the main spool, e.g. for regeneration flow
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/047—Preventing foaming, churning or cavitation
    • 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • F15B2011/0243—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits the regenerative circuit being activated or deactivated automatically
    • 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
    • F15B2211/3133—Regenerative position connecting the working ports or connecting the working ports to the pump, e.g. for high-speed approach stroke
    • 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
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
    • 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
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/86—Control during or prevention of abnormal conditions
    • F15B2211/8609—Control during or prevention of abnormal conditions the abnormal condition being cavitation
    • 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
    • Y10T137/8667—Reciprocating valve
    • Y10T137/86694—Piston valve
    • Y10T137/86702—With internal flow passage
    • 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
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87233—Biased exhaust valve
    • Y10T137/87241—Biased closed

Abstract

1,008,324. Valves. NEW YORK AIR BRAKE CO. Aug. 6, 1964 [Nov. 26, 1963], No. 31990/64. Heading F2V. A three-position control valve 11 for a double-acting motor 12, for raising and lowering the bucket-carrying boom 13 of a loader, has inlet and exhaust ports 14 and 16 which are connected to a reservoir 17 and a bore encircled by seven annular chambers 21-27. Chambers 23 and 25 are connected to the inlet port 14 via passage 28 in which is a relief valve 32, chambers 21, 24 and 27 are connected to the exhaust port via manifold 29 and chambers 22 and 26 are connected with the motor ports. Chamber 22 has a longitudinal extension 31. A hollow valve closure member 33 has two annular grooves 34 and 35 with three lands 36-38; and two axial bores 39 and 41 extend into the member 33 from either end, whilst radial bores 44, 45 and 47, 48 extend from each bore, each bore also containing a check valve 46, 49. Plugs 42, 43, close the outer ends of the bores. The end faces of lands 36, 38 contain conical undercuts 51, 52, intersected by radial passages 53, 54, whilst a check valve 50 seats on the end of 1 and 36 and encircles the member 33. In the neutral position of the plunger, 1 and 36 and 38 isolate chambers 22, 26, and so hydraulically lock the motor, and fluid from pump 15 passes through passage 28, chambers 23, 25, grooves 34, 35, chamber 24 and manifold 29 to reservoir 17. To raise the boom 13, the member 33 is moved to the right to interrupt communication between ports 14, 16, and connect passages 44, 45, 48 and 47, with chambers 22, 23, 26 and 27 and passage 53 with chamber 24. Port 22 is connected to the pump 15 by means of passage 28, annular chamber 23, radial passages 45, bore 39, check valve 46, radial passages 44. Fluid then passes along conduit 18 to the rod end of the motor whilst fluid from the head end is discharged by conduit 19 to the reservoir 17. The boom 13 is locked into position by moving the member 33 into its neutral position. To lower the boom 13 the member 33 is moved to the left and the head end of the motor is connected to the pump 15 similarly to before, whilst the rod end discharges fluid to the supply passage 28 and through check valve 50 to the reservoir 17. When the boom has passed through its vertical position in any one movement, the pressure required to continue this movement lessens, but stability of the fluid is maintained by the check valve which is kept shut by its spring on raising the boom and is opened to release discharged fluid to the reservoir 17 on lowering the boom. To prevent cavitation, a second valve 55 and extension 31 may be fitted adjacent the undercut 52 and the groove 26 respectively. Specification 812,490 is referred to.
GB31990/64A 1963-11-26 1964-08-06 Fluid flow control valve Expired GB1008324A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US325987A US3255777A (en) 1963-11-26 1963-11-26 Directional control valve

Publications (1)

Publication Number Publication Date
GB1008324A true GB1008324A (en) 1965-10-27

Family

ID=23270322

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31990/64A Expired GB1008324A (en) 1963-11-26 1964-08-06 Fluid flow control valve

Country Status (2)

Country Link
US (1) US3255777A (en)
GB (1) GB1008324A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163529A (en) * 1984-07-03 1986-02-26 Bennes Marrel Sa Valves

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357451A (en) * 1965-05-24 1967-12-12 Hydraulic Unit Specialities Co Speed and directional control valve for double-acting lift cylinder
US3386471A (en) * 1965-09-13 1968-06-04 Clark Equipment Co Flow control and cushioning valve
US3414017A (en) * 1966-09-06 1968-12-03 Commercial Shearing Fluid control valves
US3481364A (en) * 1967-11-30 1969-12-02 Commercial Shearing Hydraulic valves
US3565110A (en) * 1969-08-04 1971-02-23 Commercial Shearing Control valves
US3642027A (en) * 1970-01-09 1972-02-15 Parker Hannifin Corp Directional control valve
FR2188773A5 (en) * 1972-06-12 1974-01-18 Dba
US4004610A (en) * 1975-04-14 1977-01-25 B.W.B. Controls, Inc. Line control
FR2586283B1 (en) * 1985-08-14 1987-12-11 Jeanson Rene VALVE, PARTICULARLY FOR AN EXTENSIBLE VEHICLE HITCHING DEVICE, COMPRISING A VARIABLE SECTION PASSAGE NEAR ITS SEAT
US4840111A (en) * 1986-01-31 1989-06-20 Moog Inc. Energy-conserving regenerative-flow valves for hydraulic servomotors
WO1998001678A1 (en) * 1996-07-05 1998-01-15 Parker Hannifin Gmbh Controller for a cylinder working on a single side
FR2857704B1 (en) * 2003-07-16 2007-12-28 Bosch Rexroth Dsi Sas HYDRAULIC DISTRIBUTOR WITH TORQUE SLOTS
DE102006002920A1 (en) * 2006-01-20 2007-07-26 Robert Bosch Gmbh Hydraulic load control arrangement for operating tool, has area in which pressurizing medium flows from reverse to forward feed and provided with regeneration, and area of pressurizing medium provided without regeneration
CN109723695B (en) * 2019-03-08 2023-10-20 广东南曦液压机械有限公司 Ultrahigh pressure unloading valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL143236B (en) * 1948-11-10 Spofa Vereinigte Pharma Werke METHOD FOR PREPARING A MEDICINAL PRODUCT WITH NEUROTROPIC AND PSYCHOTROPIC ACTIVITY, FORMED MEDICINAL PRODUCT AND METHOD FOR PREPARING SUITABLE ACTIVE DIBENZO(B, F)THIEPIEN DERIVATIVES THEREFORE.
US2980135A (en) * 1958-09-18 1961-04-18 Hydraulic Unit Specialities Co Hydraulically controlled apparatus
US3006372A (en) * 1959-04-22 1961-10-31 New York Air Brake Co Control valve with cavitation-minimizing replenishing circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163529A (en) * 1984-07-03 1986-02-26 Bennes Marrel Sa Valves

Also Published As

Publication number Publication date
US3255777A (en) 1966-06-14

Similar Documents

Publication Publication Date Title
GB1008324A (en) Fluid flow control valve
GB1447326A (en) Bypass valve mud flaps
GB1433277A (en) Hydraulically powered triplex pump and control system therefor
US2448532A (en) Automatic power position hold for control valves
GB1413450A (en) Fluid control valve and pressure compensating mechanism therefor
GB1201787A (en) Dual pressure relief valve
GB1115144A (en) Directional hydraulic control valve
US3357451A (en) Speed and directional control valve for double-acting lift cylinder
GB1427503A (en) Control system for fluid-driven motors
GB1029470A (en) Fluid flow control valve
GB1045785A (en) Hydraulic valving system
GB895157A (en) Fluid control valves for double-acting fluid pressure motors
GB579566A (en) Hydraulic control system
GB1082140A (en) Improved hydraulic actuator
US3746040A (en) Directional control valve
US3215160A (en) Valve
GB1222247A (en) Hydraulic control valve with void prevention means
GB1366669A (en) Fluid flow controlling device for reversible fluid motors
SU1322990A3 (en) Hydraulic booster of vehicle steering mechanism
US3776273A (en) Directional control valve
GB957540A (en) Improvements in or relating to hydraulic control systems
GB1006121A (en) Fluid flow control valve
GB179854A (en) Improved valve
GB1033109A (en) Control valves for fluid-pressure-operated mechanisms
GB1103143A (en) Slide valve for controlling flow of a liquid medium