GB1368531A - Hydraulic pumps or motors having axial pistons - Google Patents

Hydraulic pumps or motors having axial pistons

Info

Publication number
GB1368531A
GB1368531A GB1305172A GB1305172A GB1368531A GB 1368531 A GB1368531 A GB 1368531A GB 1305172 A GB1305172 A GB 1305172A GB 1305172 A GB1305172 A GB 1305172A GB 1368531 A GB1368531 A GB 1368531A
Authority
GB
United Kingdom
Prior art keywords
block
spring
plate
springs
shaft
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
GB1305172A
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 GB1368531A publication Critical patent/GB1368531A/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
    • F04B1/20—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
    • F04B1/2007—Arrangements for pressing the cylinder barrel against the valve plate, e.g. by fluid pressure
    • 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
    • F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
    • F04B1/124—Pistons
    • F04B1/126—Piston shoe retaining means
    • 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
    • F04B1/128—Driving means
    • 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
    • F04B1/2014—Details or component parts
    • F04B1/2042—Valves

Landscapes

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

Abstract

1368531 Reciprocating pumps and motors C PENSA 21 March 1972 [23 March 1971] 13051/72 Heading F1A In a swash-plate pump or motor comprising a rotary cylinder block 7 with pistons 11 engaging a fixed or tiltable swash-plate 13, the block 7 is coupled to the drive-shaft 3 by cylindrical splines 6a engaging conical splines 6 on the shaft, permitting bending of the shaft without tilting the block, a spring or springs 24 acting against the block to bias piston slippers 12 on to the swashplate 13, via part-spherical member 19 and plate 25, and a spring 27 acting between the block and a valve plate 18, via thrust bearing 29 to reduce the force of springs 24 acting to bias the block towards the valve plate. The force of spring 27 may be 40% less than that of springs 24. A cylinder containing a spring- loaded piston communicates with each land between the valve plate ports to prevent concussion, Figs. 2 and 3 (not shown). The cylinders may have anti-friction liners 10.
GB1305172A 1971-03-23 1972-03-21 Hydraulic pumps or motors having axial pistons Expired GB1368531A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2214371 1971-03-23

Publications (1)

Publication Number Publication Date
GB1368531A true GB1368531A (en) 1974-09-25

Family

ID=11192120

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1305172A Expired GB1368531A (en) 1971-03-23 1972-03-21 Hydraulic pumps or motors having axial pistons

Country Status (2)

Country Link
AT (1) AT311807B (en)
GB (1) GB1368531A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020133423A (en) * 2019-02-13 2020-08-31 ナブテスコ株式会社 Fluid pressure rotation device and construction machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD111715A1 (en) * 1974-05-20 1975-03-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020133423A (en) * 2019-02-13 2020-08-31 ナブテスコ株式会社 Fluid pressure rotation device and construction machine

Also Published As

Publication number Publication date
AT311807B (en) 1973-12-10

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Legal Events

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