GB1530381A - Fluid-pressure operated control device - Google Patents

Fluid-pressure operated control device

Info

Publication number
GB1530381A
GB1530381A GB479376A GB479376A GB1530381A GB 1530381 A GB1530381 A GB 1530381A GB 479376 A GB479376 A GB 479376A GB 479376 A GB479376 A GB 479376A GB 1530381 A GB1530381 A GB 1530381A
Authority
GB
United Kingdom
Prior art keywords
fluid
feb
linkage
control device
servomotor
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
GB479376A
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.)
Poclain SA
Original Assignee
Poclain SA
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 Poclain SA filed Critical Poclain SA
Publication of GB1530381A publication Critical patent/GB1530381A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/002—Hydraulic systems to change the pump delivery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
    • F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Fluid Gearings (AREA)
  • Servomotors (AREA)
  • Hydraulic Motors (AREA)

Abstract

1530381 Fluid-pressure servomotors POCLAIN 6 Feb 1976 [28 Feb 1975] 04793/76 Heading G3P A hydraulic servomotor 5, used to operate the swash-plate 8 of a pump (not shown), has a feedback connection through a linkage 61 with a spool 20 forming a movable seat for a sleeve control valve 17 which may be connected to a manually operable lever 60 or be fitted with end plugs (48, 90), Fig. 5 (not shown) for operation by fluid-pressure under the control of a pilot valve (85). The pilot valve may be replaced by electrically operated valves. The servomotor is centred by springs 9 and is connected to the linkage 61 through a pin 63, Fig. 2, held between a pair of pivoted arms urged towards each other by a spring 79 so that it can be moved temporarily out of its correct position in relation to the control valve when abnormal operating conditions occur.
GB479376A 1975-02-28 1976-02-06 Fluid-pressure operated control device Expired GB1530381A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7506429A FR2302429A1 (en) 1975-02-28 1975-02-28 SLAVE CONTROL DEVICE OF A VOLUMETRIC TYPE FLUID MOTOR

Publications (1)

Publication Number Publication Date
GB1530381A true GB1530381A (en) 1978-10-25

Family

ID=9151944

Family Applications (1)

Application Number Title Priority Date Filing Date
GB479376A Expired GB1530381A (en) 1975-02-28 1976-02-06 Fluid-pressure operated control device

Country Status (5)

Country Link
JP (1) JPS51111582A (en)
BR (1) BR7600918A (en)
DE (1) DE2604890A1 (en)
FR (1) FR2302429A1 (en)
GB (1) GB1530381A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5327936A (en) * 1992-01-10 1994-07-12 Kabushiki Kaisha Showa Seisakusho Spool valve with self-centering mechanism

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4777980A (en) * 1987-06-01 1988-10-18 Brunswick Corporation Adjustment assembly for valve spool and associated centering spring
US9803660B1 (en) * 2014-02-04 2017-10-31 Danfoss Power Solutions Inc. Low friction compact servo piston assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5327936A (en) * 1992-01-10 1994-07-12 Kabushiki Kaisha Showa Seisakusho Spool valve with self-centering mechanism

Also Published As

Publication number Publication date
JPS51111582A (en) 1976-10-01
FR2302429B1 (en) 1979-09-28
BR7600918A (en) 1976-09-14
FR2302429A1 (en) 1976-09-24
DE2604890A1 (en) 1976-09-09

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee