GB972709A - Improvements in or relating to hydraulic power transmission systems - Google Patents

Improvements in or relating to hydraulic power transmission systems

Info

Publication number
GB972709A
GB972709A GB2494261A GB2494261A GB972709A GB 972709 A GB972709 A GB 972709A GB 2494261 A GB2494261 A GB 2494261A GB 2494261 A GB2494261 A GB 2494261A GB 972709 A GB972709 A GB 972709A
Authority
GB
United Kingdom
Prior art keywords
pressure
piston
cam
transmission
swash
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
GB2494261A
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.)
Linde GmbH
Original Assignee
Gesellschaft fuer Lindes Eismaschinen AG
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 Gesellschaft fuer Lindes Eismaschinen AG filed Critical Gesellschaft fuer Lindes Eismaschinen AG
Publication of GB972709A publication Critical patent/GB972709A/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
    • F16H61/433—Pump capacity control by fluid pressure control means
    • 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
    • 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
    • F16H61/46—Automatic regulation in accordance with output requirements
    • 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
    • F16H61/46—Automatic regulation in accordance with output requirements
    • F16H61/472—Automatic regulation in accordance with output requirements for achieving a target output torque

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Control Of Fluid Gearings (AREA)
  • Reciprocating Pumps (AREA)

Abstract

972,709. Hydraulic transmission and control. GESELLSCHAFT FUR LINDE'S EISMASCHINEN A.G. July 10, 1961 [July 9, 1960], No. 24942/61. Headings F2C and F2D. [Also in Division G3] An hydraulic power transmission system comprises a swash-plate pump 1 driving a motor 5 in which the inclination of swash-plate is varied by a servomotor 11 in response to manual means or the pressure in the transmission system. The servomotor 11 comprises a piston 33, one side 24 of which is subjected to the fluid pressure fed from a line 23 while the other side 42 is connected to this pressure or exhaust through a passage 41 controlled by a pilot valve 31, a land of which co-operates with a groove 40. The supply at 24 passes through passages 34, 35 and 36 to act on piston members 37, 38, the piston 38 being twice the area of piston 37 whereby the piston 38 and hence the pilot valve 31 is normally urged into contact with a manually adjustable cam 29. Rotation of this cam varies the inclination of the swash-plate from a zero output to a maximum output in either direction, a portion 43 of the cam ensuring zero output irrespective of any lost motion in the linkage from a control lever 25 to the cam. The pilot valve 31 is also adjustable through a lever 55 in response to pressure in the system. The lever is movable in response to movement of a member 53 which is moved by transmission pressure acting on a plunger 49 when this pressure overcomes the spring loading 56. An overload adjustment is also provided by a valve 58 subjected at one end to transmission pressure, which moves against spring 60 when the pressure exceeds a predetermined value and allows the transmission pressure to pass by passage 61 to act on two pistons 62, 63 thus increasing the force on the member 53.
GB2494261A 1960-07-09 1961-07-10 Improvements in or relating to hydraulic power transmission systems Expired GB972709A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG30016A DE1154689B (en) 1960-07-09 1960-07-09 Device for controlling a continuously variable hydrostatic unit

Publications (1)

Publication Number Publication Date
GB972709A true GB972709A (en) 1964-10-14

Family

ID=7123898

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2494261A Expired GB972709A (en) 1960-07-09 1961-07-10 Improvements in or relating to hydraulic power transmission systems

Country Status (2)

Country Link
DE (1) DE1154689B (en)
GB (1) GB972709A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493949A1 (en) * 1980-11-13 1982-05-14 Hydromatik Gmbh ADJUSTING AND CONTROLLING DEVICE FOR ADJUSTING THE OUTPUT ROTATION MOMENT IN A HYDROSTATIC MECHANISM WITH CASCADE CONTROL OF THE LIMIT POWER
GB2154027A (en) * 1984-02-06 1985-08-29 Bosch Gmbh Robert Sequence control device for an adjustable pump

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3213617A (en) * 1964-02-24 1965-10-26 Borg Warner Hydrostatic transmission anti-stall valve
US3213621A (en) * 1964-09-08 1965-10-26 Int Harvester Co External operating control means for a hydraulic transmission
DE1650755B1 (en) * 1967-12-14 1971-07-08 Demag Kampnagel Gmbh CONTROL DEVICE FOR THE TRANSMISSION POSITION OF A HYDROSTATIC TRANSMISSION
US3606755A (en) * 1970-03-16 1971-09-21 Sperry Rand Corp Power transmission
US3908519A (en) * 1974-10-16 1975-09-30 Abex Corp Control systems for a variable displacement pump
DE2734933A1 (en) * 1977-08-03 1979-02-15 Linde Ag CONTROL DEVICE FOR AN AXIAL PISTON PUMP
DE3346000A1 (en) * 1982-12-21 1984-06-28 Linde Ag, 6200 Wiesbaden Hydraulic actuating device for a hydrostatic machine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767136C (en) * 1937-07-20 1951-11-08 Boehringer Gmbh Geb Control device for fluid transmission
DE969121C (en) * 1953-03-13 1958-04-30 Boehringer Gmbh Geb Arrangement for controlling infinitely variable hydrostatic pumps, fluid motors or gears

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493949A1 (en) * 1980-11-13 1982-05-14 Hydromatik Gmbh ADJUSTING AND CONTROLLING DEVICE FOR ADJUSTING THE OUTPUT ROTATION MOMENT IN A HYDROSTATIC MECHANISM WITH CASCADE CONTROL OF THE LIMIT POWER
GB2154027A (en) * 1984-02-06 1985-08-29 Bosch Gmbh Robert Sequence control device for an adjustable pump

Also Published As

Publication number Publication date
DE1154689B (en) 1963-09-19

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