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GB1383823A - Electrohydraulic control devices - Google Patents

Electrohydraulic control devices

Info

Publication number
GB1383823A
GB1383823A GB1397972A GB1397972A GB1383823A GB 1383823 A GB1383823 A GB 1383823A GB 1397972 A GB1397972 A GB 1397972A GB 1397972 A GB1397972 A GB 1397972A GB 1383823 A GB1383823 A GB 1383823A
Authority
GB
United Kingdom
Prior art keywords
lever
control valve
control
march
transducer
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
GB1397972A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1383823A publication Critical patent/GB1383823A/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
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
    • F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
    • F15B9/09—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor with electrical control means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C13/00—Control systems or transmitting systems for actuating flying-control surfaces, lift-increasing flaps, air brakes, or spoilers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/52—Details of compartments for driving engines or motors or of operator's stands or cabins
    • B66C13/54—Operator's stands or cabins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/08—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists
    • B66C2700/085—Control actuators
    • 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
    • Y10T137/86582—Pilot-actuated
    • Y10T137/86614—Electric

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Servomotors (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1383823 Automatic control ROBERT BOSCH GmbH 24 March 1972 [26 March 1971] 13979/72 Headings G3N and G3P [Also in Division H3] The position of the piston 12 Fig. 1 of a hydraulic working cylinder 11 is determined by a remote lever 55 operating through electrical circuitry and electro-magnetically operated pilot valves 36, 38 to establish the position of the spool 23 of a control valve, which position is measured by transducer 47 and compared at 52 with the position of the lever 55 as measured by transducer 48. The difference signal is fed through a switching member 53 or 54 and an amplifier 41 or 42 to energize the coil winding 36a or 38a of a pilot valve. The difference signal must exceed a threshold value sensed by unit 50, to open AND gate 44 or 45. The control valve spool 23 may be operated manually by local control lever 30 when remote control lever 55 is in its zero position, causing pilot valve 34 to cut off hydraulic power from the control valve.
GB1397972A 1971-03-26 1972-03-24 Electrohydraulic control devices Expired GB1383823A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712114639 DE2114639A1 (en) 1971-03-26 1971-03-26 Electrohydraulic control device for a hydraulic consumer

Publications (1)

Publication Number Publication Date
GB1383823A true GB1383823A (en) 1974-02-12

Family

ID=5802811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1397972A Expired GB1383823A (en) 1971-03-26 1972-03-24 Electrohydraulic control devices

Country Status (7)

Country Link
US (1) US3774641A (en)
DE (1) DE2114639A1 (en)
FR (1) FR2130067B1 (en)
GB (1) GB1383823A (en)
IT (1) IT950735B (en)
PL (1) PL75123B1 (en)
SE (1) SE372600B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462583A1 (en) * 1979-07-26 1981-02-13 Deere & Co HYDROSTATIC DRIVE SYSTEM
DE3026565A1 (en) * 1979-07-26 1981-03-12 Deere & Co. Niederlassung Deere & Co. European Office, 6800 Mannheim, Moline, Ill. ELECTRICAL CONTROL CIRCUIT FOR CONTROLLING THE ADJUSTMENT OF AN ADJUSTABLE UNIT, LIKE A ZERO-CONTROLLABLE HYDROSTATIC GEARBOX
US4281584A (en) * 1978-06-01 1981-08-04 Deutsche Forschungs- Und Versuchsanstalt Fur Luft- U. Raumfahrt Electro-hydraulic regulating drive and a fast-switching magnetic valve for use therein
WO2001004416A1 (en) * 1999-07-09 2001-01-18 Raisio Chemicals Ltd. Surface size composition

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6048641B2 (en) * 1976-06-11 1985-10-29 株式会社日立製作所 fluid pressure servo valve
JPS5689491A (en) * 1979-12-14 1981-07-20 Kobe Steel Ltd Master slave device
JPS57197334A (en) * 1981-05-26 1982-12-03 Komatsu Ltd Electric oil pressure controller for construction vehicle
DE3134065A1 (en) * 1981-08-28 1983-03-10 Mannesmann Rexroth GmbH, 8770 Lohr PRESSURE CONTROL VALVE
US4422474A (en) * 1981-09-14 1983-12-27 Ford Motor Company Electro-hydraulic remote valve
DE3140301A1 (en) * 1981-10-10 1983-04-28 Bosch und Pierburg System oHG, 4040 Neuss CONTROL DEVICE FOR A PRESSURE CONTROLLED ACTUATOR
US4804009A (en) * 1982-06-08 1989-02-14 Johnson Service Company Pneumatic interface apparatus for control of process systems
JPS6159027A (en) * 1984-08-31 1986-03-26 Aisin Seiki Co Ltd Hydraulic controller
US4934143A (en) * 1987-04-29 1990-06-19 Vickers, Incorporated Electrohydraulic fluid control system for variable displacement pump
US7775240B2 (en) * 2006-02-07 2010-08-17 Sturman Digital Systems, Llc Spool valve
JP5505843B2 (en) * 2011-04-07 2014-05-28 Ｓｍｃ株式会社 Pilot operated 3-position switching valve
JP6286307B2 (en) * 2014-07-24 2018-02-28 Ｋｙｂ株式会社 Directional control valve
US9970557B2 (en) * 2016-06-27 2018-05-15 Travis Victor Dean Loewen Multi-pilot variable pressure relay valve
WO2021231276A1 (en) * 2020-05-09 2021-11-18 Emerson Process Management Valve Automation, Inc. Universal logic circuit for electro-hydraulic actuator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US22728A (en) * 1859-01-25 Washing-machine
GB735502A (en) * 1948-10-30 1955-08-24 Northrop Aircraft Inc Improvements in combined aileron and landing flap

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4281584A (en) * 1978-06-01 1981-08-04 Deutsche Forschungs- Und Versuchsanstalt Fur Luft- U. Raumfahrt Electro-hydraulic regulating drive and a fast-switching magnetic valve for use therein
FR2462583A1 (en) * 1979-07-26 1981-02-13 Deere & Co HYDROSTATIC DRIVE SYSTEM
DE3026565A1 (en) * 1979-07-26 1981-03-12 Deere & Co. Niederlassung Deere & Co. European Office, 6800 Mannheim, Moline, Ill. ELECTRICAL CONTROL CIRCUIT FOR CONTROLLING THE ADJUSTMENT OF AN ADJUSTABLE UNIT, LIKE A ZERO-CONTROLLABLE HYDROSTATIC GEARBOX
WO2001004416A1 (en) * 1999-07-09 2001-01-18 Raisio Chemicals Ltd. Surface size composition

Also Published As

Publication number Publication date
DE2114639A1 (en) 1972-10-05
FR2130067A1 (en) 1972-11-03
FR2130067B1 (en) 1975-08-29
US3774641A (en) 1973-11-27
IT950735B (en) 1973-06-20
SE372600B (en) 1974-12-23
PL75123B1 (en) 1974-12-31

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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