GB1031735A - Improvements in or relating to hydraulic pumps and motors - Google Patents

Improvements in or relating to hydraulic pumps and motors

Info

Publication number
GB1031735A
GB1031735A GB5372965A GB5372965A GB1031735A GB 1031735 A GB1031735 A GB 1031735A GB 5372965 A GB5372965 A GB 5372965A GB 5372965 A GB5372965 A GB 5372965A GB 1031735 A GB1031735 A GB 1031735A
Authority
GB
United Kingdom
Prior art keywords
recesses
valve plate
cylinder block
leakage
grooves
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
GB5372965A
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.)
C Van der Lely NV
Original Assignee
C Van der Lely NV
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 C Van der Lely NV filed Critical C Van der Lely NV
Publication of GB1031735A publication Critical patent/GB1031735A/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
    • F01B3/0044—Component parts, details, e.g. valves, sealings, lubrication
    • F01B3/0047—Particularities in the contacting area between cylinder barrel and 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
    • F01B3/0044—Component parts, details, e.g. valves, sealings, lubrication
    • F01B3/0052—Cylinder barrel

Landscapes

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

Abstract

1,031,735. Hydrostatic transmissions. C. VAN DER LELY N.V. Jan. 8, 1963 [Oct. 11, 1962], No. 53729/65. Divided out of 1,031,731. Heading F2C. [Also in Division F1 In a pump or motor for a hydrostatic transmission, comprising a relatively rotatable cylinder block and valve plate, recesses 75 to 81 are provided in the cylinder block face and cooperate with recesses in the valve plate face (Fig. 4, not shown), the valve plate recesses being supplied with liquid from the valve plate kidney ports to provide hydraulic balancing, and recesses 75 to 81 beng shaped as shown to reduce the risk of the recesses being brought into communication with each other in the event of scratching of the cylinder block surface. Arcuate leakage grooves are formed in the valve plate surface between the recesses and the kidney ports, the ends of the grooves being connected by straight, relatively narrow channels. A leakage-collecting recess is provided at the centre of the valve plate surface.
GB5372965A 1962-10-11 1963-01-08 Improvements in or relating to hydraulic pumps and motors Expired GB1031735A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL284266 1962-10-11

Publications (1)

Publication Number Publication Date
GB1031735A true GB1031735A (en) 1966-06-02

Family

ID=19754166

Family Applications (2)

Application Number Title Priority Date Filing Date
GB5373065A Expired GB1031736A (en) 1962-10-11 1963-01-08 Improvements in or relating to hydraulic pumps and motors
GB5372965A Expired GB1031735A (en) 1962-10-11 1963-01-08 Improvements in or relating to hydraulic pumps and motors

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB5373065A Expired GB1031736A (en) 1962-10-11 1963-01-08 Improvements in or relating to hydraulic pumps and motors

Country Status (2)

Country Link
DE (1) DE1728354A1 (en)
GB (2) GB1031736A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2440155A (en) * 2006-07-18 2008-01-23 Agco Gmbh An axial piston pump or machine of the swashplate or bent axis type

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5878649A (en) * 1998-04-07 1999-03-09 Caterpillar Inc. Controlled porting for a pressure transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8128380B2 (en) 2006-06-18 2012-03-06 Agco Gmbh Axial piston pump or motor of the swashplate or bent axis type
GB2440155A (en) * 2006-07-18 2008-01-23 Agco Gmbh An axial piston pump or machine of the swashplate or bent axis type

Also Published As

Publication number Publication date
DE1728354A1 (en) 1971-01-21
GB1031736A (en) 1966-06-02

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