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GB1248933A - Improvements in or relating to axial piston pumps or motors - Google Patents

Improvements in or relating to axial piston pumps or motors

Info

Publication number
GB1248933A
GB1248933A GB45377/68A GB4537768A GB1248933A GB 1248933 A GB1248933 A GB 1248933A GB 45377/68 A GB45377/68 A GB 45377/68A GB 4537768 A GB4537768 A GB 4537768A GB 1248933 A GB1248933 A GB 1248933A
Authority
GB
United Kingdom
Prior art keywords
piston
pressure
plate
fluid
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
GB45377/68A
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.)
PepsiAmericas Inc
Original Assignee
Abex Corp
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 Abex Corp filed Critical Abex Corp
Publication of GB1248933A publication Critical patent/GB1248933A/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
    • 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
    • F01B3/0082—Details
    • F01B3/0085—Pistons
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity

Landscapes

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

Abstract

1,248,933. Swash-plate pumps and motors. ABEX CORP. Sept.24, 1968 [Oct. 30, 1967], No.45377/68. Headings F1A and F1S. A revolving cylinder swash-plate pump or motor 12 has ports, one in the side of each bore which is covered at all times by the piston, which are in constant communication with a common inlet for high-pressure fluid, and a passage 72 formed in each piston to communicate between a piston shoe 60 and the side wall 49 of the piston so that in operation a restricted flow of fluid is supplied to the shoe. In a swash-plate motor a pressure source 10 supplies hydraulic or pneumatic fluid through an adjustable pressure control valve 11 which may be reversible to a hydraulic motor 12. Motor 12 includes a cylindrical centre body 35, a port block 36 and a head plate 37. A roller bearing 41 rotatably journals the cylinder block 42 which drives a shaft 43 to which the block is loosely connected by splines 44. Cylinder block 42 has nine cylindrical bores 49 which communicate through openings 51 to arcuate pressure and exhaust ports 52, 53. Each bearing shoe 60 passes through an opening formed in a hold-down plate 62 which abuts shoulders 63 of the shoes and thereby maintains the shoes in engagement with the swash-plate 57. The motor may be provided with means for varying the angle of the swash-plate, thereby varying the displacement of the pistons. The pressure fluid is supplied constantly into the recess 68 of the shoe via rotating seal 82 to circumferential grooves 85 in each cylinder bore and then through bores 71, 72 which end in a circumferential groove 74. Pressure in chamber 77 and groove 74 is balanced and leakage of fluid between them is zero. Groove 85 is positioned so that it is never directly aligned with piston grooves 74, nor does it open directly to the tank chamber 38 when the piston is in its innermost position. Alternatively a recess can be provided in the piston or passage 84 can enter bore 49 directly. The separate shoe pressure supply system reduces fluid leakage and establishes pressure for vectors which act on the piston tending to recentre it when it is cocked or tipped in its cylinder bore. The separate pressure feed means may also be incorporated in pumps which are convertible into motors.
GB45377/68A 1967-10-30 1968-09-24 Improvements in or relating to axial piston pumps or motors Expired GB1248933A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67901567A 1967-10-30 1967-10-30

Publications (1)

Publication Number Publication Date
GB1248933A true GB1248933A (en) 1971-10-06

Family

ID=24725247

Family Applications (1)

Application Number Title Priority Date Filing Date
GB45377/68A Expired GB1248933A (en) 1967-10-30 1968-09-24 Improvements in or relating to axial piston pumps or motors

Country Status (5)

Country Link
US (1) US3437015A (en)
CH (1) CH490611A (en)
DE (1) DE1804529A1 (en)
FR (1) FR1577029A (en)
GB (1) GB1248933A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129063A (en) * 1982-10-22 1984-05-10 Hydromatik Gmbh A radial bearing in a swash plate fluid machine
GB2417991A (en) * 2004-09-10 2006-03-15 Danfoss As Hydraulic axial piston machine

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3611876A (en) * 1969-08-14 1971-10-12 Ferris Q Day Ultra high-pressure compressible fluid motor
US3890882A (en) * 1970-08-03 1975-06-24 Wilfred S Bobier Fluid device having plastic housing and means for mounting a cylinder barrel
US3726189A (en) * 1971-06-22 1973-04-10 Lucas Industries Ltd Pistons for hydraulic piston type pumps and motors
US3783743A (en) * 1972-11-16 1974-01-08 Abex Corp Axial piston hydraulic transducer shoe retainer structure
GB1526078A (en) * 1975-09-24 1978-09-27 Mono Pumps Ltd Reciprocating machines
DE2805492C2 (en) * 1978-02-09 1982-10-07 Linde Ag, 6200 Wiesbaden Arrangement for cooling the pistons in a hydraulic axial piston machine
DE3416638A1 (en) * 1984-05-05 1985-11-14 Diesel Kiki Co. Ltd., Tokio/Tokyo Swash plate piston pump
US4903578A (en) * 1988-07-08 1990-02-27 Allied-Signal Inc. Electropneumatic rotary actuator having proportional fluid valving
JPH02283870A (en) * 1989-04-05 1990-11-21 Zahnradfab Friedrichshafen Ag Axial-direction piston pump
DE4423023C2 (en) * 1994-06-30 1998-07-09 Brueninghaus Hydromatik Gmbh Axial piston machine with a cooling circuit for the cylinders and pistons
DE19636274C2 (en) * 1996-09-06 2001-07-26 Sauer Sundstrand Gmbh & Co Plain bearing with self-adjusting load capacity
US6006652A (en) * 1998-10-30 1999-12-28 General Motors Corporation Automotive refrigerant wobble plate type compressor piston with improved ball and socket joint
JP2001107850A (en) * 1999-10-12 2001-04-17 Zexel Valeo Climate Control Corp Swash plate type refrigerant compressor
JP3923331B2 (en) * 2002-02-13 2007-05-30 本田技研工業株式会社 Expansion machine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1006269A (en) * 1910-10-17 1911-10-17 Julian F Bentley Engine.
US1274391A (en) * 1915-07-12 1918-08-06 Raynor M Gardiner Hydraulic transmission mechanism.
US1487965A (en) * 1921-01-05 1924-03-25 Anthony G M Michell Rotary reciprocating engine
US3173376A (en) * 1957-03-21 1965-03-16 United Systems Corp Hydraulic pump or motor
US3015315A (en) * 1959-09-28 1962-01-02 Tinius Olsen Testing Mach Co Piston-centering means for hydraulic testing machines or the like
US3056358A (en) * 1960-01-20 1962-10-02 United Aircraft Corp Axial piston pump with balanced radial bearing
US3106138A (en) * 1960-06-27 1963-10-08 Hans Toma Piston type hydrostatic power units
US3153987A (en) * 1960-06-29 1964-10-27 Thoma Hans Piston type hydrostatic power units
US3142262A (en) * 1960-08-31 1964-07-28 Council Scient Ind Res Pressure fluid pistons or plungers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129063A (en) * 1982-10-22 1984-05-10 Hydromatik Gmbh A radial bearing in a swash plate fluid machine
GB2417991A (en) * 2004-09-10 2006-03-15 Danfoss As Hydraulic axial piston machine
GB2417991B (en) * 2004-09-10 2009-07-29 Danfoss As Hydraulic axial piston machine

Also Published As

Publication number Publication date
FR1577029A (en) 1969-08-01
US3437015A (en) 1969-04-08
DE1804529A1 (en) 1969-07-03
CH490611A (en) 1970-05-15

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