GB979820A - Control device for hydraulic drives - Google Patents

Control device for hydraulic drives

Info

Publication number
GB979820A
GB979820A GB3119762A GB3119762A GB979820A GB 979820 A GB979820 A GB 979820A GB 3119762 A GB3119762 A GB 3119762A GB 3119762 A GB3119762 A GB 3119762A GB 979820 A GB979820 A GB 979820A
Authority
GB
United Kingdom
Prior art keywords
pressure
piston
pump
tank
outlet pipe
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
GB3119762A
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.)
KAMPER MASCHB GmbH
Original Assignee
KAMPER MASCHB 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 KAMPER MASCHB GmbH filed Critical KAMPER MASCHB GmbH
Publication of GB979820A publication Critical patent/GB979820A/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
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use 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
    • 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
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety 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
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • 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
    • Y10T137/87177—With bypass
    • Y10T137/87185—Controlled by supply or exhaust valve

Landscapes

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

Abstract

979,820. Hydraulic apparatus. KAMPERMASCHINENBAU G.m.b.H. Aug. 14, 1962 [Aug. 14, 1961], No. 31197/62. Heading F1P A control device for pump-fed hydraulic drives comprises selector valves 1, 2 for controlling the drives, a pressure relief valve 10, 16 and an unloading device 5 between a pump conduit P and an outlet pipe 4, the unloading device having a piston which is subjected on one side, to pump pressure and, on the other side, to the pressure downstream of an axial bore 6 and the force of a spring 8, the outlet pipe 9 being open when the plungers of the selector valves 1, 2 are in their neutral position so that the device 5 unloads the pump to a tank T and being closed upon displacement of the plungers so that the unloading device disconnects the tank and increases the pressure supplied by the pump. The control device acts to limit shock waves in the system when the selector valves are moved from their neutral positions to actuate the hydraulic drives. In the neutral position of the selector valves, the outlet pipe is unblocked and pressure from the pump conduit P acts on the piston 5, the flow of fluid through the bore 6 causing a lower pressure to act on the other side of the piston and in the outlet pipe 9. The pressure acting across the piston moves the piston upwardly against the spring 8 to connect the pump conduit to a tank T. When one of the plungers is moved from its neutral position, the outlet pipe 9 is blocked and the equalising of the pressure across the piston permits the spring to move the piston towards its seating to disconnect the pump conduit from the tank and increase the pressure from the pump. The pressure increase follows an exponential curve and is determined by surfaces 13 on the part of the piston which engages the seating, and shocks are prevented by pressure-relief valve 10, 16 opening before the piston closes the passage to the tank.
GB3119762A 1961-08-14 1962-08-14 Control device for hydraulic drives Expired GB979820A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK44495A DE1173751B (en) 1961-08-14 1961-08-14 Control device for preferably several hydraulic drives supplied by one pump

Publications (1)

Publication Number Publication Date
GB979820A true GB979820A (en) 1965-01-06

Family

ID=7223485

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3119762A Expired GB979820A (en) 1961-08-14 1962-08-14 Control device for hydraulic drives

Country Status (3)

Country Link
US (1) US3225781A (en)
DE (1) DE1173751B (en)
GB (1) GB979820A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3269416A (en) * 1964-05-25 1966-08-30 American Brake Shoe Co Control valve mechanism with means for reducing hydraulic shock
US3282286A (en) * 1964-07-17 1966-11-01 New York Air Brake Co Distributing valve
US3951162A (en) * 1971-11-03 1976-04-20 Koehring Company Control valve with flow control means
US3991787A (en) * 1973-02-21 1976-11-16 Caterpillar Tractor Co. Modulation control valve for hydraulically operated winch
US3934742A (en) * 1973-12-26 1976-01-27 Hydraulic Industries, Inc. Valve mechanism for automatic control of a number of fluid motors
US4040438A (en) * 1974-04-18 1977-08-09 Koehring Control valve with flow control means
US4153075A (en) * 1975-11-26 1979-05-08 Tadeusz Budzich Load responsive control valve
US4253482A (en) * 1979-03-05 1981-03-03 Gresen Manufacturing Company Hydraulic valve having pressure compensated demand flow
JPS57116917A (en) * 1981-01-13 1982-07-21 Toshiba Mach Co Ltd Compound control valve with valve for attachment
JPS57120704A (en) * 1981-01-19 1982-07-27 Toshiba Mach Co Ltd Confluent composite control valve
GB8408635D0 (en) * 1984-04-04 1984-05-16 Lucas Ind Plc Control valve
US5586577A (en) * 1994-09-28 1996-12-24 Samsung Heavy Industries Co., Ltd. Mono-block control valve with side bypass passage
JP4029417B2 (en) 1998-07-14 2008-01-09 Ｓｍｃ株式会社 Pressure regulating valve for solenoid valve assembly and solenoid valve assembly including the same
US6209580B1 (en) * 1999-12-14 2001-04-03 Raymond Keith Foster Multifunction valve assembly
US11513540B2 (en) * 2017-07-19 2022-11-29 Imi Hydronic Engineering, Inc. Pressure compensated flow controller with only two pressures

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2247140A (en) * 1937-08-09 1941-06-24 Vickers Inc Multiple valve unit
US2319551A (en) * 1937-08-09 1943-05-18 Fosdick Machine Tool Co Hydraulic operating and control mechanism for machine tools
US2267177A (en) * 1937-10-07 1941-12-23 Vickers Inc Power transmission
US2318851A (en) * 1938-01-26 1943-05-11 Vickers Inc Power transmission for machine tools
GB586727A (en) * 1943-09-03 1947-03-28 Bendix Aviat Corp Improvements in or relating to pressure regulating valves
FR983807A (en) * 1948-04-09 1951-06-28 Suisse Soc Ind Process for regulating the operating pressure of hydraulic installations, and regulator for implementing this process
US2574851A (en) * 1948-06-30 1951-11-13 H B Salter Mfg Co Plumbing valve
DE1018311B (en) * 1954-09-17 1957-10-24 Smil Reis Device for automatic regulation of the delivery rate of a pump
DE1090480B (en) * 1957-07-19 1960-10-06 Kaemper Motoren G M B H Control device for preferably several hydraulic drives supplied by one pump
US2977971A (en) * 1958-04-03 1961-04-04 New York Air Brake Co Fluid distribution system and valves therefor

Also Published As

Publication number Publication date
US3225781A (en) 1965-12-28
DE1173751B (en) 1964-07-09

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