GB1069505A - Hydraulic motor control units - Google Patents

Hydraulic motor control units

Info

Publication number
GB1069505A
GB1069505A GB106466A GB106466A GB1069505A GB 1069505 A GB1069505 A GB 1069505A GB 106466 A GB106466 A GB 106466A GB 106466 A GB106466 A GB 106466A GB 1069505 A GB1069505 A GB 1069505A
Authority
GB
United Kingdom
Prior art keywords
spool
restriction
land
port
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
GB106466A
Inventor
David Marsh Bruce
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.)
Electro Hydraulics Ltd
Original Assignee
Electro Hydraulics 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 Electro Hydraulics Ltd filed Critical Electro Hydraulics Ltd
Priority to GB106466A priority Critical patent/GB1069505A/en
Publication of GB1069505A publication Critical patent/GB1069505A/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
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • 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
    • F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
    • 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
    • F15B2211/32—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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
    • 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41572—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and an 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
    • F15B2211/705—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

Landscapes

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

Abstract

1,069,505. Hydraulic apparatus. ELECTRO-HYDRAULICS Ltd. Jan. 10, 1966, No. 1064/66. Heading F1P. [Also in Division F2] Pump pressure is continuously supplied to the rod side of a jack piston (28) Fig. 1 (not shown) through lines 5, 7 and a variable restriction (6, 13) which is never completely closed and which is controlled by a land (26) on the spool (21) of a manually actuated valve (4) which according to its position either connects the full area side of the jack piston through a line (17) to a return reservoir or to a supply pump resulting in the jack piston being moved by said continuously applied pressure or against it and at a variable speed. The restriction (6) which is constant is in parallel with the variable restriction (13) and the spool land (26) is wider than land (24) controlling a valve port (14) to which line (17) is connected whereby initial movement of valve spool (21) in either direction to open port (14) results in port (13) remaining closed and the flow to or from the rod side of the jack piston being confined to restriction (6). In a modification flow restriction to and from the rod side of piston (28) Fig. 3 (not shown) is effected through a port (50) controlled by an underlapping land (40) of a second spool valve (30) the spool (35) of which is spaced from spool (21) but moves therewith.
GB106466A 1966-01-10 1966-01-10 Hydraulic motor control units Expired GB1069505A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB106466A GB1069505A (en) 1966-01-10 1966-01-10 Hydraulic motor control units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB106466A GB1069505A (en) 1966-01-10 1966-01-10 Hydraulic motor control units

Publications (1)

Publication Number Publication Date
GB1069505A true GB1069505A (en) 1967-05-17

Family

ID=9715552

Family Applications (1)

Application Number Title Priority Date Filing Date
GB106466A Expired GB1069505A (en) 1966-01-10 1966-01-10 Hydraulic motor control units

Country Status (1)

Country Link
GB (1) GB1069505A (en)

Similar Documents

Publication Publication Date Title
GB1040379A (en) Fluid motor control system
GB1488530A (en) Hydraulic control apparatus
GB1245703A (en) Hydraulic reversing device for reciprocating part of a machine
GB1112618A (en) Adjustable, metered, directional flow control arrangement
ES454533A1 (en) Hydraulic secateurs
GB1420424A (en) High pressure fluid intensifier and method
GB1380226A (en) Fluid supply apparatus
JPS52106529A (en) Control system for controlling flow rate of fluid
ES442776A1 (en) Control systems for variable capacity hydraulic machines
GB1263118A (en) A hydraulic control system
GB1045785A (en) Hydraulic valving system
GB1157104A (en) Hydraulic Pressure Control Circuit
GB1269724A (en) Automatic flow control valve
GB1069505A (en) Hydraulic motor control units
GB1105709A (en) Improvements in pumps
GB1234924A (en) A control system for a hydraulic control device
GB1314389A (en) Pilot operated control valve
GB1099140A (en) Dual engine controls
GB1262488A (en) Hydraulic apparatus for including variable-delivery pumps
GB1216837A (en) Liquid fuel injection pumps
GB1262075A (en) Systems for operating internal combustion engine valves by means of fluid pressure
GB1514489A (en) Hydraulic cab-tilting systems
GB1463716A (en) Device for speed control of prime movers
GB1110872A (en) Hydraulic drives
GB1535205A (en) Variable displacement pump