GB1334198A - Hydrostatic drive unit - Google Patents

Hydrostatic drive unit

Info

Publication number
GB1334198A
GB1334198A GB463372A GB463372A GB1334198A GB 1334198 A GB1334198 A GB 1334198A GB 463372 A GB463372 A GB 463372A GB 463372 A GB463372 A GB 463372A GB 1334198 A GB1334198 A GB 1334198A
Authority
GB
United Kingdom
Prior art keywords
motor
pump
motors
pivotable
displacement
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
GB463372A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1334198A publication Critical patent/GB1334198A/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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0032—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F01B3/0035—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block having two or more sets of cylinders or pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0032—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F01B3/0044—Component parts, details, e.g. valves, sealings, lubrication
    • F01B3/0064—Machine housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/0032—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F01B3/0076—Connection between cylinder barrel and inclined swash plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/10—Control of working-fluid admission or discharge peculiar thereto
    • F01B3/103—Control of working-fluid admission or discharge peculiar thereto for machines with rotary cylinder block
    • F01B3/109—Control of working-fluid admission or discharge peculiar thereto for machines with rotary cylinder block by changing the inclination of the axis of the cylinder barrel relative to the swash plate
    • 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
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/427—Motor capacity control by mechanical control means, e.g. by levers or pedals

Landscapes

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

Abstract

1334198 Hydraulic reciprocating motors H MOLLY 1 Feb 1972 [4 Feb 1971] 4633/72 Heading F1A [Also in Division F2] A hydrostatic transmission comprises a variable displacement motor 44 whose cylinder block 48 is pivotable about an axis 52, eccentric to the axis of the output shaft 40, the motor being supplied by a pump 30 driven by input shaft 14, which shaft also drives a cycloid make up pump 20. The pump 30 is variable in its displacement, but is intended to run at maximum displacement during operation with the motor being varied. As shown the motor comprises swash plate 42, piston rods 74 with pistons 54, a stationary valve portion 76 of a pivotable frame 50 and a hollow trunnion 82 which guides the cylinder block, the pump design being similar. A cylinder 46 (one of two) encloses a differential piston which adjusts motor displacement and holds the cylinder block 48 against the torque produced by the rod pressure. In a further embodiment the pump feeds two sets of two motors Fig. 12 (not shown), the pump being reversible and the circuit including a valve to control pressure to the adjusting cylinders. One set of two motors is shown in Fig. 13 wherein each motor 130, 132 has its cylinder block (e.g. 146) pivotable about an off-axis point, the outputs of the motors being half shafts 176, 177 geared to the swash plates 140, 141, the cylinder blocks being drivingly attached to the swash plates through bevel teeth (e.g. 156, 158) on toroids permitting the cylinder blocks to be pivoted. The trunnions on which the pivotable frames (e.g. 150) are mounted contain the passages for oil supply to the motors, and motor capacity is adjusted by cylinders 134 and 136. The maximum capacity of the (or each) motor at maximum displacement in each embodiment is a multiple of that of the pump.
GB463372A 1971-02-04 1972-02-01 Hydrostatic drive unit Expired GB1334198A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712105119 DE2105119B2 (en) 1971-02-04 1971-02-04 HYDROSTATIC TRANSMISSION

Publications (1)

Publication Number Publication Date
GB1334198A true GB1334198A (en) 1973-10-17

Family

ID=5797751

Family Applications (1)

Application Number Title Priority Date Filing Date
GB463372A Expired GB1334198A (en) 1971-02-04 1972-02-01 Hydrostatic drive unit

Country Status (3)

Country Link
US (1) US3775981A (en)
DE (1) DE2105119B2 (en)
GB (1) GB1334198A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2200799A5 (en) * 1972-09-25 1974-04-19 Peugeot & Renault
US5033358A (en) * 1988-01-04 1991-07-23 Hans Molly Axial piston type motor
US7337869B2 (en) * 2000-01-10 2008-03-04 The United States Of America As Represented By The Administrator Of The United States Environmental Protection Agency Hydraulic hybrid vehicle with integrated hydraulic drive module and four-wheel-drive, and method of operation thereof
US6719080B1 (en) * 2000-01-10 2004-04-13 The United States Of America As Represented By The Administrator Of The Environmental Protection Agency Hydraulic hybrid vehicle
US7374005B2 (en) * 2000-01-10 2008-05-20 The United States Of America As Represented By The Administrator Of The U.S. Environmental Protection Agency Opposing pump/motors
US6973783B1 (en) 2004-02-27 2005-12-13 Hydro-Gear Limited Partnership Zero turn drive apparatus
EP1802867A1 (en) * 2004-10-20 2007-07-04 Markus Liebherr International AG Hydrostatic axial piston machine and use of said machine
US8056333B1 (en) 2007-08-01 2011-11-15 Hydro-Gear Limited Partnership Pump and engine configuration
US9010105B1 (en) 2007-08-01 2015-04-21 Hydro-Gear Limited Partnership Transmission and engine configuration
US8925311B1 (en) 2009-07-24 2015-01-06 Hydro-Gear Limited Partnership Transmission and engine configuration
US8893491B2 (en) * 2011-03-10 2014-11-25 The United States of America, as represented by the Administrator of the U.S. Environment Protection Agency Modular hydraulic hybrid drivetrain
DE102014211664A1 (en) * 2014-06-18 2015-12-24 Zf Friedrichshafen Ag Arrangement with several axial piston machines
DE102014109066A1 (en) * 2014-06-27 2015-12-31 Claas Industrietechnik Gmbh transmission assembly
DE102017207569A1 (en) * 2017-02-14 2018-08-16 Robert Bosch Gmbh Hydrostatic transmission and method of braking with it

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175363A (en) * 1961-04-20 1965-03-30 Hans Molly Hydraulic machine of axial piston type

Also Published As

Publication number Publication date
US3775981A (en) 1973-12-04
DE2105119A1 (en) 1972-08-10
DE2105119B2 (en) 1972-12-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee
728C Application made for restoration (sect. 28/1977)
728A Order made restoring the patent (sect. 28/1977)
PCNP Patent ceased through non-payment of renewal fee