GB1150452A - Improvements in or relating to Hydraulic Actuators and Control Systems therefor - Google Patents

Improvements in or relating to Hydraulic Actuators and Control Systems therefor

Info

Publication number
GB1150452A
GB1150452A GB2443365A GB2443365A GB1150452A GB 1150452 A GB1150452 A GB 1150452A GB 2443365 A GB2443365 A GB 2443365A GB 2443365 A GB2443365 A GB 2443365A GB 1150452 A GB1150452 A GB 1150452A
Authority
GB
United Kingdom
Prior art keywords
piston
line
valve
spool
spools
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
GB2443365A
Inventor
Jeremy Joseph Fry
Donald Lionel Hore
Peter Thomas Mence Nott
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.)
Rotork PLC
Original Assignee
Rotork Engineering Co 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 Rotork Engineering Co Ltd filed Critical Rotork Engineering Co Ltd
Priority to GB2443365A priority Critical patent/GB1150452A/en
Publication of GB1150452A publication Critical patent/GB1150452A/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
    • 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
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/046—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed depending on the position of the working member
    • F15B11/048—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed depending on the position of the working member with deceleration 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check 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
    • F15B2211/30—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
    • F15B2211/3144—Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional 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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • 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
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/322—Directional control characterised by the type of actuation mechanically actuated by biasing means, e.g. spring-actuated
    • 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
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
    • 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
    • F15B2211/35—Directional control combined with flow 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/75—Control of speed of the 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/755—Control of acceleration or deceleration of the output member

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

1,150,452. Hydraulic control circuits. ROTORK ENG. CO. Ltd. Sept. 7, 1966 [June 9, 1965], No.24433/65. Heading F1P. [Also in Division F2] The speed of a double acting hydraulic piston 22, Fig. 6, is reduced near either end of its stroke by movement of connected axially sliding spools 11, 14 of a main control valve 10 and speed control valve 15 and which is effected when one or other of connected cams 44, 45 are rocked by a link 49, connecting said cams to the rod 23 of piston 22 so as to abut, one or other of rollers 48, 47 to swing a bell crank 46 about its fixed pivot 50a to displace an extension 43, 12 of spools 11, 14; the initial positioning of spools 11, 14, being effected by a two-portion pilot valve 16 the spool 17 of which is positioned either by a manual handle 6 and cam 58 abutting an extension 18 of the spool 17 by remote control of solenoids 55 and 56. As shown piston 22 is held at its forward end position by pressure from a supply line 26 being admitted to opposite sides of the piston through main valve 10 and line 19 and through line 39, valve 16, lines 40, 34, valve 15 a restricted line 28 and a line 20. To initiate the inward stroke of piston 22 handle 6 is moved to the position shown in Fig. 2 resulting in the spool 17 of pilot valve 16 being moved to its other position in which it connects both ends of speed control valve 15 to a return reservoir 27 to allow the connected spools 11, 14 to be moved to the right by a spring 57. In this position of spools 11, 14 the R.H. side of piston 22 is connected to reservoir whilst the L. H. side is connected through line 19, valve 10 and line 24 to the pressure line 26. As the inward stroke of piston 22 proceeds, cams 44, 45 which are adjustably secured together are rocked clockwise about their common axis until near the end of the piston stroke the nose of cam 44 abuts roller 48 to move extension 43 to the left as shown, Fig. 3, and to which the bell crank is pivotally secured at 50. Valve 10 continues to pass pressure fluid to the LHS. of piston 22 but blocks exhaust from RHS. which is relieved through restricted line 29, valve 15 lines 35, 40 and 41. To initiate the outward stroke of piston 22 handle 6 is moved to its R. H. position, Fig. 4 (not shown), resulting in pilot valve spool 17 being moved so as to direct pressure fluid along lines 40, 34 to move spool 14 and hence spool 11 whereby valve 10 directs pressure fluid from line 26 through line 20 to the R. H. S. of piston 22. As piston rod 23 extends outwardly of cylinder 21, cams 44, 45 rotate anti-clockwise until near the end of the stroke cam 45 moves roller 47, Fig. 5 (not shown), to rock lever 26 and move extension 43, 12 and connected spools 11, 14 to the position shown in Fig. 6. Cams 44, 45 are linked at 64 to a rod 51 having a cam 52 which actuate limit switches 53, 54 to de-energize the remotely controlled solenoids 55, 56.
GB2443365A 1965-06-09 1965-06-09 Improvements in or relating to Hydraulic Actuators and Control Systems therefor Expired GB1150452A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2443365A GB1150452A (en) 1965-06-09 1965-06-09 Improvements in or relating to Hydraulic Actuators and Control Systems therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2443365A GB1150452A (en) 1965-06-09 1965-06-09 Improvements in or relating to Hydraulic Actuators and Control Systems therefor

Publications (1)

Publication Number Publication Date
GB1150452A true GB1150452A (en) 1969-04-30

Family

ID=10211663

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2443365A Expired GB1150452A (en) 1965-06-09 1965-06-09 Improvements in or relating to Hydraulic Actuators and Control Systems therefor

Country Status (1)

Country Link
GB (1) GB1150452A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252050A (en) * 1979-02-22 1981-02-24 Ex-Cell-O Corporation Control valve unit for hydraulic actuator
US4282798A (en) * 1979-10-22 1981-08-11 Ex-Cell-O Corporation Control valve unit for hydraulic linear actuator
US4354422A (en) * 1979-04-19 1982-10-19 Honda Giken Kogyo Kabushiki Kaisha Load relief device for power steering system
US10619654B2 (en) 2017-05-05 2020-04-14 Hamilton Sundstrand Corporation Fail-fixed hydraulic actuator
CN114233700A (en) * 2021-12-22 2022-03-25 合肥合锻智能制造股份有限公司 Hydraulic control system for switching large-flow multifunctional operation modes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252050A (en) * 1979-02-22 1981-02-24 Ex-Cell-O Corporation Control valve unit for hydraulic actuator
US4354422A (en) * 1979-04-19 1982-10-19 Honda Giken Kogyo Kabushiki Kaisha Load relief device for power steering system
US4282798A (en) * 1979-10-22 1981-08-11 Ex-Cell-O Corporation Control valve unit for hydraulic linear actuator
US10619654B2 (en) 2017-05-05 2020-04-14 Hamilton Sundstrand Corporation Fail-fixed hydraulic actuator
CN114233700A (en) * 2021-12-22 2022-03-25 合肥合锻智能制造股份有限公司 Hydraulic control system for switching large-flow multifunctional operation modes
CN114233700B (en) * 2021-12-22 2023-12-26 合肥合锻智能制造股份有限公司 Hydraulic control system

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees