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GB1062874A - Hydraulic apparatus - Google Patents

Hydraulic apparatus

Info

Publication number
GB1062874A
GB1062874A GB34165/63A GB3416563A GB1062874A GB 1062874 A GB1062874 A GB 1062874A GB 34165/63 A GB34165/63 A GB 34165/63A GB 3416563 A GB3416563 A GB 3416563A GB 1062874 A GB1062874 A GB 1062874A
Authority
GB
United Kingdom
Prior art keywords
motor
output shafts
shafts
motor units
pump
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
GB34165/63A
Inventor
Thomas Desmond Hudson Andrews
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.)
Dowty Technical Developments Ltd
Original Assignee
Dowty Technical Developments Ltd
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 Dowty Technical Developments Ltd filed Critical Dowty Technical Developments Ltd
Priority to GB34165/63A priority Critical patent/GB1062874A/en
Priority to US392880A priority patent/US3241319A/en
Priority to DE19641453488 priority patent/DE1453488A1/en
Publication of GB1062874A publication Critical patent/GB1062874A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
    • B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of fluid gearing
    • 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
    • F01B3/0038—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 inclined to main shaft axis
    • 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
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/06—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis
    • F03C1/0678—Control
    • F03C1/0681—Control using a valve in a system with several motor chambers, wherein the flow path through the chambers can be changed
    • 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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • 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
    • F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
    • F16H39/04—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit
    • 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
    • F16H61/44—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation
    • F16H61/448—Control circuits for tandem pumps or motors

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Reciprocating Pumps (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

1,062,874. Hydrostatic transmissions. DOWTY TECHNICAL DEVELOPMENTS Ltd. Aug. 25, 1964 [Aug. 29, 1963], No. 34165/63. Headings F2C and F2D. The casings of a plurality of tilting head pump and/or motor units for a hydrostatic transmission are joined together for conjoint tilting movement about a single axis. As shown, Fig. 4, in a hydrostatic transmission a pair of motor units in a single casing 6 are hydraulically connected in parallel and are supplied with pressure liquid by a tilting head pump 1. The casing 6 is pivoted at 38, 43, 44, 41 to a fixed housing 14 and has valve plates 28, 29 which co-operate with rotatable cylinder blocks 47, 71 having axial cylinders 51, 73 co-operating with pistons 57, 79 pivotally connected to plates 65, 86 fast with output shafts 5, 17. The shafts 5, 17 are geared together at 19, 21 so that the two motors rotate at equal speeds in opposite directions. Ducts 58 in the piston connecting rods permit fluid from the working circuit to lubricate bearing plates 68, 87. Ports 55, 56, 77, 78 in valve plates 28, 29 are interconnected by ducts 97, 99 which terminate in a lug 91 which is pivotally connected by links 7, 8 to the pump. The links 7, 8 also transmit hydraulic fluid between the pump and motor units. In Figs. 5 and 6 (not shown), the output shafts of the motor units each carry a gear which meshes a gear on a separate driven shaft and thus each motor unit rotates in the same direction. In Figs. 7 and 8 (not shown), the output shafts of the motor units are geared together through an axially slidable idler, axial movement of which disconnects the output shafts. A valve is also provided between the valve plates so that one of the motors may be isolated hydraulically. This arrangement increases the range of output speeds by permitting the motors to be used in parallel for low speed high torque operation and using one motor alone for high speed operation. In Fig. 10, the motor output shafts 5, 17 are geared at 151, 152, 155, 156 to the half-shafts 153, 157 of a motor vehicle and permit differential action. The differential action may be locked out by engaging a clutch 159 which connects the two half shafts. The multiple tilting head unit may include both pump and motor units in which case the cylinder blocks are parallel and the input and output shafts at an angle to each other.
GB34165/63A 1963-08-29 1963-08-29 Hydraulic apparatus Expired GB1062874A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB34165/63A GB1062874A (en) 1963-08-29 1963-08-29 Hydraulic apparatus
US392880A US3241319A (en) 1963-08-29 1964-08-28 Hydraulic apparatus
DE19641453488 DE1453488A1 (en) 1963-08-29 1964-08-29 Hydrostatic transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34165/63A GB1062874A (en) 1963-08-29 1963-08-29 Hydraulic apparatus

Publications (1)

Publication Number Publication Date
GB1062874A true GB1062874A (en) 1967-03-22

Family

ID=10362202

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34165/63A Expired GB1062874A (en) 1963-08-29 1963-08-29 Hydraulic apparatus

Country Status (3)

Country Link
US (1) US3241319A (en)
DE (1) DE1453488A1 (en)
GB (1) GB1062874A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810519A (en) * 1972-03-01 1974-05-14 Int Harvester Co Vehicle transmission assembly
US5406794A (en) * 1993-05-14 1995-04-18 Curtiss Wright Flight Systems Inc. Dual variable displacement over-center hydraulic motor power drive unit
US5701738A (en) * 1996-07-24 1997-12-30 Tecumseh Products Company Mechanical disconnect for variable speed hydrostatic transmission
JP4608677B2 (en) * 2004-07-09 2011-01-12 株式会社 神崎高級工機製作所 Charge relief mechanism
US20090090103A1 (en) * 2005-05-26 2009-04-09 Hitachi Construction Machinery Co., Ltd. Hydraulic Drive Device
DE102012208691A1 (en) * 2012-05-24 2013-11-28 Robert Bosch Gmbh Hydraulic machine for a motor vehicle
DE102012208704A1 (en) * 2012-05-24 2013-11-28 Robert Bosch Gmbh Hydraulic machine for a motor vehicle
US10487940B2 (en) 2016-08-19 2019-11-26 Eaton Intelligent Power Limited Hydraulic mechanical transmission with increased efficiency

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123975A (en) * 1964-03-10 Ebert
US2981068A (en) * 1955-08-16 1961-04-25 Daimler Benz Ag Hydrostatic transmission with slewable pump and motor aggregate
US3074296A (en) * 1957-08-29 1963-01-22 Ebert Heinrich Infinitely adjustable fluid transmission
US3142963A (en) * 1961-10-26 1964-08-04 Dowty Hydraulic Units Ltd Hydraulic apparatus
US3143859A (en) * 1962-03-07 1964-08-11 Dowty Hydraulic Units Ltd Hydraulic apparatus

Also Published As

Publication number Publication date
DE1453488A1 (en) 1970-03-26
US3241319A (en) 1966-03-22

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