GB556394A - Improvements in hydraulic swash-plate pumps and motors - Google Patents

Improvements in hydraulic swash-plate pumps and motors

Info

Publication number
GB556394A
GB556394A GB16150/41A GB1615041A GB556394A GB 556394 A GB556394 A GB 556394A GB 16150/41 A GB16150/41 A GB 16150/41A GB 1615041 A GB1615041 A GB 1615041A GB 556394 A GB556394 A GB 556394A
Authority
GB
United Kingdom
Prior art keywords
plate
swash
fork
bearings
casing
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
GB16150/41A
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.)
JOHN BLACKSTOCK HAWLEY JR
Original Assignee
JOHN BLACKSTOCK HAWLEY JR
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
Priority to US196225A priority Critical patent/US2272771A/en
Application filed by JOHN BLACKSTOCK HAWLEY JR filed Critical JOHN BLACKSTOCK HAWLEY JR
Priority to GB16150/41A priority patent/GB556394A/en
Publication of GB556394A publication Critical patent/GB556394A/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
    • F01B3/0082—Details
    • F01B3/0085—Pistons
    • 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
    • F01B3/0032—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
    • F01B3/0064—Machine housing
    • 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
    • F01B3/106—Control of working-fluid admission or discharge peculiar thereto for machines with rotary cylinder block by changing the inclination of the swash plate

Abstract

556,394. Swash-plate pumps and motors. HAWLEY, J. B. Dec. 15, 1941, No. 16150. [Class 102 (i)] [Also in Groups XXVI and XXIX] In a hydraulic pump or motor comprising a rotary cylinder barrel 27 and a rotary swashplate 32, the inclination of the swash-plate is varied by a tilting plate 47 having a stem 51a carrying a fork 51 in which is journalled a pin 55 extending through a block 53 fitted between the arms of the fork, the flat top and bottom surfaces of the block being engaged by roller bearings 57 carried by a cage 59a on a vertically movable control shaft 59 which extends along the sides of the fork 51 to the exterior of the box-like casing 15. The latter is fitted with a front plate 16, a valve plate 17, and angled supports 18, all secured together by bolts 19, 21, the plates 16, 17 carrying bearings 23, 24 and a thrust plate 25 for the driving shaft 26. A spring 31 bears against a yoke 26b on the shaft 26 within the swash-plate 32 and presses the cylinder barrel 27 against the valve plate 17. The barrel 27 is formed with cylinders 27b for pistons 38 with ball-ended piston rods 40 connected to the swash-plate 32. The cage 59a has cylindrical outer surfaces to engage a bore 16b in the plate 16 and is guided by a key member 60. Roller bearings 68 are disposed between hard bearing plates 46, 67 on the swash-plate 32 and the tilting plate 47 respectively. The tilting plate 47 has large trunnions journalled in bearings 48, and its inclination is indicated by a pointer 74 secured to one of the trunnions and enclosed by a sealed cover plate 80. The valve plate 17 and the pistons 38 are all made of high-nickel steel with welded-on hard bronze bearing surfaces. Inlet and discharge openings 27c in the cylinders 27b are connected to inlet and outlet conduits 90 by means of diametrically opposite arcuate slots 17d with short end grooves 17dd and centrally bridged by metal pieces 17j of small cross-section. The valve plate 17 is also formed with annular grooves 17g connected by a series of passages 17i to holes 17h which supply pressure fluid or lubricating oil to its bearing surface. The casing 15 may be provided inside the bolts 19, 21 with a thin light-metal cylindrical casing 120 to prevent friction, and with an external connection for an expansion number.
GB16150/41A 1938-03-07 1941-12-15 Improvements in hydraulic swash-plate pumps and motors Expired GB556394A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US196225A US2272771A (en) 1938-03-07 1938-03-07 Hydraulic pump
GB16150/41A GB556394A (en) 1938-03-07 1941-12-15 Improvements in hydraulic swash-plate pumps and motors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US196225A US2272771A (en) 1938-03-07 1938-03-07 Hydraulic pump
GB16150/41A GB556394A (en) 1938-03-07 1941-12-15 Improvements in hydraulic swash-plate pumps and motors

Publications (1)

Publication Number Publication Date
GB556394A true GB556394A (en) 1943-10-04

Family

ID=26251851

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16150/41A Expired GB556394A (en) 1938-03-07 1941-12-15 Improvements in hydraulic swash-plate pumps and motors

Country Status (2)

Country Link
US (1) US2272771A (en)
GB (1) GB556394A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452754A (en) * 1944-02-21 1948-11-02 Rockford Machine Tool Company Variable power transmission
US2439498A (en) * 1944-04-26 1948-04-13 Wallace Russell Bruce Fuel injecting pump
US2591491A (en) * 1945-03-05 1952-04-01 Sig Schweiz Industrieges Variable delivery positive displacement pump
US2604048A (en) * 1946-09-11 1952-07-22 Sundstrand Machine Tool Co Pump
US2604856A (en) * 1947-05-22 1952-07-29 North American Aviation Inc Pump
US2557508A (en) * 1948-02-09 1951-06-19 William E Leibing Metering fuel pump
US2975720A (en) * 1955-03-09 1961-03-21 Daimler Benz Ag Gear unit or other movable mechanism
US3073253A (en) * 1955-03-14 1963-01-15 Daimler Benz Ag Lubrication system
US3040672A (en) * 1955-10-05 1962-06-26 Daimler Benz Ag Lubricating system for control surfaces of a hydrostatic transmission
US2858771A (en) * 1955-10-27 1958-11-04 Richard T Cornelius Cooling system for hydraulic pumps
US3566746A (en) * 1969-04-29 1971-03-02 Nemo Corp Hydraulic steering system for boats
US4550645A (en) * 1984-04-27 1985-11-05 Sundstrand Corporation Thin valve plate for a hydraulic unit
US4875390A (en) * 1986-03-24 1989-10-24 Honda Giken Kogyo Kabushiki Kaisha Shift control device for hydrostatic continuously variable transmission
JPH0313588Y2 (en) * 1986-12-12 1991-03-27
US4945817A (en) * 1989-10-24 1990-08-07 General Motors Corporation Axial piston device
US5307731A (en) * 1992-11-19 1994-05-03 Sauer Inc. Housing system for hydraulic units
JPH0783161A (en) * 1993-09-17 1995-03-28 Kanzaki Kokyukoki Mfg Co Ltd Variable displacement type axial piston machine
US5540563A (en) * 1994-09-16 1996-07-30 Sauer Inc. Unitary housing for double hydraulic unit
CN114485565A (en) * 2021-12-31 2022-05-13 潍柴动力股份有限公司 Mechanical swash plate inclination angle indicator for hydraulic pump motor and hydraulic pump motor

Also Published As

Publication number Publication date
US2272771A (en) 1942-02-10

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