GB1530592A - Control devices for variable capacity hydraulic machines - Google Patents

Control devices for variable capacity hydraulic machines

Info

Publication number
GB1530592A
GB1530592A GB4980374A GB4980374A GB1530592A GB 1530592 A GB1530592 A GB 1530592A GB 4980374 A GB4980374 A GB 4980374A GB 4980374 A GB4980374 A GB 4980374A GB 1530592 A GB1530592 A GB 1530592A
Authority
GB
United Kingdom
Prior art keywords
swash
plate
coupled
linkage
servopiston
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
GB4980374A
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.)
Massey Ferguson Services NV
Original Assignee
Massey Ferguson Services NV
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 Massey Ferguson Services NV filed Critical Massey Ferguson Services NV
Priority to GB4980374A priority Critical patent/GB1530592A/en
Publication of GB1530592A publication Critical patent/GB1530592A/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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

1530592 Fluid-pressure servomotor systems MASSEY FERGUSON SERVICES NV 17 Nov 1975 [18 Nov 1974] 49803/74 Heading G3P The swash-plate 12 of a variable capacity machine is adjusted by a servopiston 35 controlled by a valve 26 operated in accordance with the product of machine displacement and output pressure. A lever 24 pivoted at 25 is actuated by a plunger 23 moved outwardly by pressure in a conduit 20 and displaced with respect to the pivot 25 by a sleeve 17 coupled with the swash-plate. The servopiston is also coupled with the sleeve by a protruberance 39 in engagement with slots in a pair of levers 41, 45 one of which has a knob 46 for direct hand operation. In a second embodiment, a pair of reversible swash-plate machines are coupled through a linkage (99) Fig. 2 (not shown) with a servopiston (93) controlled by a valve (80) connected with pistons (66) by levers (76, 69) which cause the valve (80) to move in the same direction for either direction of movement of the swash-plate from its neutral position. A plunger (113) provided with a hand lever may also be used to operate the linkage (99). Each swash-plate may have a separate servo control (52, 53) coupled to the piston (93) through the linkage (99) and a linkage similar to that shown at 41, 45 in Fig. 1. Specification 1528914 is referred to.
GB4980374A 1975-11-17 1975-11-17 Control devices for variable capacity hydraulic machines Expired GB1530592A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4980374A GB1530592A (en) 1975-11-17 1975-11-17 Control devices for variable capacity hydraulic machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4980374A GB1530592A (en) 1975-11-17 1975-11-17 Control devices for variable capacity hydraulic machines

Publications (1)

Publication Number Publication Date
GB1530592A true GB1530592A (en) 1978-11-01

Family

ID=10453594

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4980374A Expired GB1530592A (en) 1975-11-17 1975-11-17 Control devices for variable capacity hydraulic machines

Country Status (1)

Country Link
GB (1) GB1530592A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3501455A1 (en) * 1984-01-19 1985-07-25 Linde Ag, 6200 Wiesbaden Output controller for a hydrostatic pump
CN108180130A (en) * 2018-03-09 2018-06-19 徐工集团工程机械有限公司 Variable servo valve, hydraulic system and variable pump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3501455A1 (en) * 1984-01-19 1985-07-25 Linde Ag, 6200 Wiesbaden Output controller for a hydrostatic pump
US4639195A (en) * 1984-01-19 1987-01-27 Linde Aktiengesellschaft Power control devices for hydrostatic pumps
CN108180130A (en) * 2018-03-09 2018-06-19 徐工集团工程机械有限公司 Variable servo valve, hydraulic system and variable pump
CN108180130B (en) * 2018-03-09 2024-02-06 江苏徐工工程机械研究院有限公司 Variable servo valve, hydraulic system and variable pump

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Legal Events

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