GB1326921A - Axial piston hydraulic machines - Google Patents

Axial piston hydraulic machines

Info

Publication number
GB1326921A
GB1326921A GB1326921DA GB1326921A GB 1326921 A GB1326921 A GB 1326921A GB 1326921D A GB1326921D A GB 1326921DA GB 1326921 A GB1326921 A GB 1326921A
Authority
GB
United Kingdom
Prior art keywords
pistons
port block
block
saddle
flange
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
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
Joseph Lucas Industries 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 Lucas Industries Ltd, Joseph Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of GB1326921A publication Critical patent/GB1326921A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F04B1/26—Control
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
    • F04B1/328—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a 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
    • 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
    • F01B3/10—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

Landscapes

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

Abstract

1326921 Reciprocating pumps and motors JOSEPH LUCAS (INDUSTRIES) Ltd 19 April 1971 [14 Jan 1970] 1736/70 Heading F1A [Also in Division F2] An axial piston pump or motor comprises a rotary cylinder block 17 coupled to a drive flange 11 by a constant-velocity universal joint 18, and pistons 15 with sockets 14 engaging ball heads 13 secured to flange 11, block 17 engaging a port block 20 having a part-cylindrical face 22 slidably mounted on a complementary face of a saddle 23 which is moved vertically by a pair of pistons 24 to tilt the cylinder block and port block assembly relative to flange 11 to adjust the piston stroke and change the direction of rotation or flow. Port block 20 is supported by arms 30 pivoted at 31 in the housing 10, the pivot axis lying in the plane containing the centres of balls 13. Inturned flanges at the port block ends of arms 30 engage arcuate grooves 34 in saddle 23 concentric with the part-cylindrical surface 22. Port block inlet and outlet openings 21 communicate with corresponding openings 26 in saddle 23 which communicate with respective inlet and outlet connections 29 via passages 25 in pistons 24 and sleeves 28, one piston passage opening downwardly, as shown, and the other upwardly, Fig.3 (not shown). Servo pressures are applied to pistons 24 via connections 27 to control the piston stroke and direction of rotation or flow, the pressure at connections 29 also acting on pistons 24 to return the assembly to its no-stroke position. Hydraulic transmission assemblies incorporating the pump or motor are described (see Division F2).
GB1326921D 1971-04-19 1971-04-19 Axial piston hydraulic machines Expired GB1326921A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB173670 1971-04-19

Publications (1)

Publication Number Publication Date
GB1326921A true GB1326921A (en) 1973-08-15

Family

ID=9727098

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1326921D Expired GB1326921A (en) 1971-04-19 1971-04-19 Axial piston hydraulic machines

Country Status (1)

Country Link
GB (1) GB1326921A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129063A (en) * 1975-10-01 1978-12-12 Ifield Engineering Pty. Limited Bent axis pumps and motors
WO2010091305A3 (en) * 2009-02-06 2011-05-19 Government Of The United States Of America, As Represented By The Administrator Of The U.S. Environmental Protection Agency Variable length bent-axis pump/motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129063A (en) * 1975-10-01 1978-12-12 Ifield Engineering Pty. Limited Bent axis pumps and motors
WO2010091305A3 (en) * 2009-02-06 2011-05-19 Government Of The United States Of America, As Represented By The Administrator Of The U.S. Environmental Protection Agency Variable length bent-axis pump/motor
US8356547B2 (en) 2009-02-06 2013-01-22 The United States Of America, As Represented By The Administrator Of The U.S. Environmental Protection Agency Variable length bent-axis pump/motor

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee