GB845018A - Improvements relating to hydraulic servo-motor systems - Google Patents

Improvements relating to hydraulic servo-motor systems

Info

Publication number
GB845018A
GB845018A GB1562957A GB1562957A GB845018A GB 845018 A GB845018 A GB 845018A GB 1562957 A GB1562957 A GB 1562957A GB 1562957 A GB1562957 A GB 1562957A GB 845018 A GB845018 A GB 845018A
Authority
GB
United Kingdom
Prior art keywords
closure
rod
ports
pressure
plungers
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
GB1562957A
Inventor
Alfred Edward Pye
Thomas John Head
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.)
Dowty Equipment Ltd
Original Assignee
Dowty Equipment Ltd
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 Dowty Equipment Ltd filed Critical Dowty Equipment Ltd
Priority to GB1562957A priority Critical patent/GB845018A/en
Publication of GB845018A publication Critical patent/GB845018A/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
    • F15B9/10—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 in which the controlling element and the servomotor each controls a separate member, these members influencing different fluid passages or the same passage

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Servomotors (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)

Abstract

845,018. Fluid-pressure servomotor control systems. DOWTY EQUIPMENT Ltd. Aug. 15, 1958 [May 16, 1957], No. 15629/57. Class 135. A closed-centre piston valve closure 21 slidable in a fixed sleeve 3 serves to reverse the connections from the pressure and exhaust ports 4, 7 to ports 17, 18 according to the direction of movement of the closure 21 from the central position shown. The closure 21 incorporates end bores 36, 38 in each of which is a plunger 39, 41 secured to bridge pieces 42, 43, respectively, that are attached to a rod 44 slidable in the valve block 1 and guided by pins 46, 47, the rod 44 having a lug 45 for operating purposes; spherically surfaced members 51, 52 engage complemental surfaces on the ends of the closure 21 which members are loaded by springs 53, 54 abutting nuts 55, 56, respectively, on the plungers 39, 41. The ports 17, 18 communicate with the bores 36, 38 via passages 35, 37, respectively, so that the pressure differential across a motor connected to the ports 17, 18 creates a force on the closure 21 through the plungers 39, 41 which move the closure in opposition to any displacement of the rod 44 until the closure 21 is in equilibrium. When used in a servo system a floating lever, not shown, may be pivoted to the lug 45, which lever is acted on differentially by an input signal and a fluid-pressure motor feedback signal. Two piston valves as described above may be arranged in parallel in a single block whereby a single rod 44 may simultaneously control two motors.
GB1562957A 1957-05-16 1957-05-16 Improvements relating to hydraulic servo-motor systems Expired GB845018A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1562957A GB845018A (en) 1957-05-16 1957-05-16 Improvements relating to hydraulic servo-motor systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1562957A GB845018A (en) 1957-05-16 1957-05-16 Improvements relating to hydraulic servo-motor systems

Publications (1)

Publication Number Publication Date
GB845018A true GB845018A (en) 1960-08-17

Family

ID=10062591

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1562957A Expired GB845018A (en) 1957-05-16 1957-05-16 Improvements relating to hydraulic servo-motor systems

Country Status (1)

Country Link
GB (1) GB845018A (en)

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