US3863997A - Conical bearings - Google Patents

Conical bearings Download PDF

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Publication number
US3863997A
US3863997A US389630A US38963073A US3863997A US 3863997 A US3863997 A US 3863997A US 389630 A US389630 A US 389630A US 38963073 A US38963073 A US 38963073A US 3863997 A US3863997 A US 3863997A
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US
United States
Prior art keywords
pads
pad
thrust face
slipper
swash plate
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 - Lifetime
Application number
US389630A
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English (en)
Inventor
Anthony Roger Davis
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.)
Vickers Ltd
Original Assignee
Vickers 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 Vickers Ltd filed Critical Vickers Ltd
Application granted granted Critical
Publication of US3863997A publication Critical patent/US3863997A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F16C17/06—Sliding-contact bearings for exclusively rotary movement for axial load only with tiltably-supported segments, e.g. Michell bearings

Definitions

  • ABSTRACT A bearing including pivoted pads having flat surfaces running on a thrust face of conical form convex with respect to the flat running surfaces of the pads.
  • This invention relates to bearings and is in particular concerned with the bearing that is formed by the slipper pads and the surface on which they run of an axial piston swash plate pump or motor.
  • a bearing that includes pivoted pads and a thrust face on which the pads run in operation, the surface of each pad that runs on the thrust face being substantially flat and the thrust face being of conical form generated from a centre about which the motion of each pad is substantially circular and so as to be convex with respect to the substantially flat running surfaces of the pads.
  • the pads are the slipper pads of an axial piston swash plate pump or motor and the thrust face is the face of the swash plate on which these slipper pads run.
  • FIG. 1 diagrammatically illustrates a slipper pad running on a swash plate
  • FIG. 2 is a diagrammatic cross-sectional view taken on the line IIII of FIG. 1, and
  • FIG. 3 is a diagrammatic partly sectional view taken in the direction of arrow III of FIG. 2.
  • the slipper pad 1 of the Figures is one of the slipper pads of an axial piston pump or motor having slipper pads freely connected to pumping pistons and reacting against an inclined swash plate thereby giving the pistons, which are located in a rotating barrel, a reciprocating pumping action due to the barrel rotation.
  • the thrust face of the swash plate is referenced 2 in the Figures.
  • the running surface 1A of the slipper pad 1 is substantially flat and the thrust face 2 is frusto-conical so as to be convex with respect to the pad running face 1A, the face 2 being generated from a centre about which the motion of the slipper pad 1 is substantially circular.
  • the resultant contact between the pad and the thrust face is a line nominally along a diameter or chord of the slipper pad.
  • leading and trailing wedges are formed due to the conically surfaced swash plate, the larger ends of these wedges being on the leading and trailing edges of a slipper pad.
  • hydrodynamic lubrication occurs due to the natural formation of an oil wedge in the direction of motion of the slipper pad.
  • a bearing that includes an axial piston swash plate having pivoted slipper pads, and a swash plate having a thrust face on the pads run in operation, the surface of each pad that runs on the thrust face being substantially flat and the thrust face being of conical form generated from a centre about which the motion of each pad is substantially circular and so as to be convex with respect to the substantially flat running surfaces of the pads.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Sliding-Contact Bearings (AREA)
US389630A 1972-08-25 1973-08-21 Conical bearings Expired - Lifetime US3863997A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3986872A GB1391368A (en) 1972-08-25 1972-08-25 Bearings

Publications (1)

Publication Number Publication Date
US3863997A true US3863997A (en) 1975-02-04

Family

ID=10411923

Family Applications (1)

Application Number Title Priority Date Filing Date
US389630A Expired - Lifetime US3863997A (en) 1972-08-25 1973-08-21 Conical bearings

Country Status (11)

Country Link
US (1) US3863997A (US20090182215A1-20090716-C00004.png)
JP (1) JPS4985432A (US20090182215A1-20090716-C00004.png)
AU (1) AU468405B2 (US20090182215A1-20090716-C00004.png)
CA (1) CA973245A (US20090182215A1-20090716-C00004.png)
CH (1) CH566488A5 (US20090182215A1-20090716-C00004.png)
DE (1) DE2342863A1 (US20090182215A1-20090716-C00004.png)
DK (1) DK133193C (US20090182215A1-20090716-C00004.png)
FR (1) FR2197424A5 (US20090182215A1-20090716-C00004.png)
GB (1) GB1391368A (US20090182215A1-20090716-C00004.png)
IT (1) IT994678B (US20090182215A1-20090716-C00004.png)
SE (1) SE381088B (US20090182215A1-20090716-C00004.png)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261250A (en) * 1975-07-02 1981-04-14 Danfoss A/S Slide shoe arrangement, particularly for axial and radial piston machines
US4420986A (en) * 1977-11-01 1983-12-20 K. K. Toyoda Jidoshokki Seisakusho Sliding shoe for a rotatable swash-plate type refrigerant gas compressor
US4683804A (en) * 1985-01-18 1987-08-04 Taiho Kogyo Kabushiki Kaisha Swash plate type compressor shoe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4795007A (en) * 1987-07-24 1989-01-03 Zeftek, Inc. Brake rod protector
DE202009016796U1 (de) * 2009-12-11 2011-04-21 Aktiebolaget Skf Gleitschuhanordnung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2137487A (en) * 1936-03-04 1938-11-22 Edwin S Hall Bearing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2137487A (en) * 1936-03-04 1938-11-22 Edwin S Hall Bearing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261250A (en) * 1975-07-02 1981-04-14 Danfoss A/S Slide shoe arrangement, particularly for axial and radial piston machines
US4420986A (en) * 1977-11-01 1983-12-20 K. K. Toyoda Jidoshokki Seisakusho Sliding shoe for a rotatable swash-plate type refrigerant gas compressor
US4683804A (en) * 1985-01-18 1987-08-04 Taiho Kogyo Kabushiki Kaisha Swash plate type compressor shoe

Also Published As

Publication number Publication date
GB1391368A (en) 1975-04-23
AU5962973A (en) 1975-02-27
CH566488A5 (US20090182215A1-20090716-C00004.png) 1975-09-15
AU468405B2 (en) 1976-01-08
DE2342863A1 (de) 1974-02-28
DK133193C (da) 1976-09-06
JPS4985432A (US20090182215A1-20090716-C00004.png) 1974-08-16
CA973245A (en) 1975-08-19
DK133193B (da) 1976-04-05
FR2197424A5 (US20090182215A1-20090716-C00004.png) 1974-03-22
SE381088B (sv) 1975-11-24
IT994678B (it) 1975-10-20

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