GB857922A - Improvements in hydraulic variable-speed transmissions - Google Patents

Improvements in hydraulic variable-speed transmissions

Info

Publication number
GB857922A
GB857922A GB297757A GB297757A GB857922A GB 857922 A GB857922 A GB 857922A GB 297757 A GB297757 A GB 297757A GB 297757 A GB297757 A GB 297757A GB 857922 A GB857922 A GB 857922A
Authority
GB
United Kingdom
Prior art keywords
pump
motor
disc valve
transmissions
hydraulic
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
GB297757A
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.)
BENNETT WESTON
Original Assignee
BENNETT WESTON
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 BENNETT WESTON filed Critical BENNETT WESTON
Priority to GB297757A priority Critical patent/GB857922A/en
Publication of GB857922A publication Critical patent/GB857922A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/431—Pump capacity control by electro-hydraulic control means, e.g. using solenoid valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Motors (AREA)
  • Rotary Pumps (AREA)

Abstract

857,922. Hydraulic transmissions. WESTON, B. April 28, 1958 [Jan. 28, 1957], No. 2977/57. Class 69 (2). The major axes of the stationary elliptical cams 6, 7 against which the spring biased rollers 8 of the pump and motor of an hydraulic transmission react, are inclined at 45 degrees to each other. A disc valve 11 is rotatable between limits by hydraulic pressure on one side or the other of vane 12. In the neutral position shown in Fig. 2, where the four slots 26 of the valve 11 are arranged so that each pump axis is cut symmetrically by two slots, the pump output is zero, since of the grooves 5 of the pump covered by any one slot 26, an equal number are decreasing in volume as are increasing. As disc valve 11 is rotated, the pump output increases from zero and the ability of the motor to absorb liquid decreases, causing an increasing motor speed. The direction of rotation of the motor depends on the direction of rotation of the disc valve 11 from its neutral position. The invention may be applied to transmissions with other types of pump and motor.
GB297757A 1957-01-28 1957-01-28 Improvements in hydraulic variable-speed transmissions Expired GB857922A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB297757A GB857922A (en) 1957-01-28 1957-01-28 Improvements in hydraulic variable-speed transmissions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB297757A GB857922A (en) 1957-01-28 1957-01-28 Improvements in hydraulic variable-speed transmissions

Publications (1)

Publication Number Publication Date
GB857922A true GB857922A (en) 1961-01-04

Family

ID=9749592

Family Applications (1)

Application Number Title Priority Date Filing Date
GB297757A Expired GB857922A (en) 1957-01-28 1957-01-28 Improvements in hydraulic variable-speed transmissions

Country Status (1)

Country Link
GB (1) GB857922A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108161984A (en) * 2018-02-12 2018-06-15 西安正安环境技术有限公司 Robot hydraulic knuckle module

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108161984A (en) * 2018-02-12 2018-06-15 西安正安环境技术有限公司 Robot hydraulic knuckle module
CN108161984B (en) * 2018-02-12 2023-09-01 深圳市球形动力科技有限公司 Hydraulic joint module of robot

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