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GB1350712A - Axial piston machines - Google Patents

Axial piston machines

Info

Publication number
GB1350712A
GB1350712A GB3094872A GB3094872A GB1350712A GB 1350712 A GB1350712 A GB 1350712A GB 3094872 A GB3094872 A GB 3094872A GB 3094872 A GB3094872 A GB 3094872A GB 1350712 A GB1350712 A GB 1350712A
Authority
GB
United Kingdom
Prior art keywords
cylinder block
pressure
block
valve plate
annular
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
GB3094872A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1350712A publication Critical patent/GB1350712A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F01B3/0055—Valve means, e.g. valve 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
    • F01B3/0032—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F01B3/0041—Arrangements for pressing the cylinder barrel against the valve plate, e.g. fluid pressure
    • 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
    • F01B3/0052—Cylinder barrel
    • 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
    • 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
    • F04B1/20—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 having rotary cylinder block

Landscapes

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

Abstract

1350712 Reciprocating pumps ROBERT BOSCH GmbH 3 July 1972 [8 July 1971] 30948/72 Heading F1A In an axial piston machine, e.g. a pump, the rotary cylinder block 7 is biased towards the valve plate 2 by hydraulic pressure in an annular chamber 33 defined between the cylinder block and an annular member 32 surrounding the cylinder block and supported by a ring 37 for substantially universal movement to align with the cylinder block. Member 32 and ring 37 are held against rotation by pins 31, 36. Liquid leaking from the valve plate ports between the block and valve plate is collected by an annular groove 26 which is connected to a low-pressure reservoir via throttle 27 and passage 30. When leakage increases due to tilting of the block, the pressure in groove 26 increases and opens check valve 34' to admit liquid under pressure into chamber 33 to increase the bias on the cylinder block. The block is also biased by working pressure acting on cylinder shoulders 21' and a spring 17. Support ring 37 has pairs of partcylindrical projections (40), (42), Figs. 2a, 2b (not shown), diametrically opposed on opposite faces, one pair engaging member 32 and the other engaging casing abutment 38. In another embodiment, Figs. 3 to 7 (not shown), the annular pressure chamber 33 is separated by sealing pistons into two chambers communicating through respective check valves with separate semi-circular grooves (58), (59) in the valve plate, the grooves having respective throttled connections to the low pressure reservoir. In this embodiment, one of the pairs of projections (90), (91) on the support ring is offset from the axis.
GB3094872A 1971-07-08 1972-07-03 Axial piston machines Expired GB1350712A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2134026A DE2134026A1 (en) 1971-07-08 1971-07-08 AXIAL PISTON MACHINE

Publications (1)

Publication Number Publication Date
GB1350712A true GB1350712A (en) 1974-04-24

Family

ID=5813048

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3094872A Expired GB1350712A (en) 1971-07-08 1972-07-03 Axial piston machines

Country Status (4)

Country Link
US (1) US3802321A (en)
DE (1) DE2134026A1 (en)
FR (1) FR2145265A5 (en)
GB (1) GB1350712A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933082A (en) * 1972-08-16 1976-01-20 Hans Molly Axial piston type machine
WO1981000597A1 (en) * 1979-08-27 1981-03-05 Caterpillar Tractor Co Radial piston fluid translating device with power conserving scavenging means
SE444839B (en) * 1984-01-31 1986-05-12 Sven Schriwer PISTON MACHINE
DE4130225C1 (en) * 1991-09-11 1992-11-26 Brueninghaus Hydraulik Gmbh, 7240 Horb, De
DE19706263C1 (en) * 1997-02-18 1998-07-23 Brueninghaus Hydromatik Gmbh Axial piston machine
JP6612610B2 (en) 2015-12-17 2019-11-27 ナブテスコ株式会社 Fluid pressure pump and fluid pressure system
US11105203B2 (en) * 2018-01-29 2021-08-31 Carrier Corporation High efficiency centrifugal impeller with balancing weights
US11236736B2 (en) * 2019-09-27 2022-02-01 Honeywell International Inc. Axial piston pump with port plate having balance feed aperture relief feature
DE102020203445A1 (en) 2020-03-18 2021-09-23 Robert Bosch Gesellschaft mit beschränkter Haftung Axial piston machine with controlled cylinder pressure and control pressure transfer to the control surface

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB311938A (en) * 1928-05-15 1929-05-23 John Robson Improvements in or connected with hydraulic pumps, motors, hydraulic transmission gears and the like
US1817080A (en) * 1929-04-10 1931-08-04 George E Howard Transmission mechanism
DE1140421B (en) * 1957-07-06 1962-11-29 Bosch Gmbh Robert Hydraulic transmission with rotating cylinder body
US3208395A (en) * 1963-08-30 1965-09-28 Budzich Tadeusz Cylinder barrel suspension for fluid pressure energy translating device
BE755124A (en) * 1969-08-21 1971-02-22 Caterpillar Tractor Co THRUST BEARING FOR PUMP OR PISTON MOTOR, ESPECIALLY FOR EARTH-MOVING EQUIPMENT

Also Published As

Publication number Publication date
DE2134026A1 (en) 1973-01-18
FR2145265A5 (en) 1973-02-16
US3802321A (en) 1974-04-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees