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WO2002008573A1 - Machine hydrostatique a pistons axiaux - Google Patents

Machine hydrostatique a pistons axiaux Download PDF

Info

Publication number
WO2002008573A1
WO2002008573A1 PCT/EP2001/008559 EP0108559W WO0208573A1 WO 2002008573 A1 WO2002008573 A1 WO 2002008573A1 EP 0108559 W EP0108559 W EP 0108559W WO 0208573 A1 WO0208573 A1 WO 0208573A1
Authority
WO
WIPO (PCT)
Prior art keywords
axial piston
piston machine
drive
shaped
housing
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.)
Ceased
Application number
PCT/EP2001/008559
Other languages
German (de)
English (en)
Inventor
Mario Baeriswyl
Erich Eckhardt
Franz-Josef Schwede
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.)
Liebherr Machines Bulle SA
Original Assignee
Liebherr Machines Bulle SA
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 Liebherr Machines Bulle SA filed Critical Liebherr Machines Bulle SA
Priority to EP01967219A priority Critical patent/EP1303682B1/fr
Priority to DE50109094T priority patent/DE50109094D1/de
Publication of WO2002008573A1 publication Critical patent/WO2002008573A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F01B3/10—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
    • 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
    • F01B3/007—Swash plate
    • F01B3/0073—Swash plate swash plate bearing means or driving or driven axis bearing means

Definitions

  • the invention relates to an adjustable hydrostatic axial piston machine with a drum-shaped cylinder block which is rotatably supported on a drive or output shaft, one end of which is mounted in a bore in the bottom of a pot-shaped housing, and is provided concentrically and parallel to the center line thereof with cylinder bores in which axially displaceable pistons are arranged which are supported via spherical heads on a swash plate or an inclined side of a cradle-shaped body which is pivotably mounted in the housing by roller bearings on shaft journals and is provided with a pivot drive.
  • the object of the invention is to provide an adjustable hydrostatic axial piston machine of the type specified at the outset, which is provided with a simple and encapsulated bearing in the housing for the shaft journals of the cradle-shaped body.
  • the housing is provided on its inside on both sides of the drive or output shaft with approximately semi-cylindrical shells into which the rolling bearings are inserted and in which they are held by bow-shaped holding parts.
  • the semi-cylindrical shells which are preferably formed in one piece with the housing, are located on the side opposite the inclined surface of the cradle-shaped body, so that they lie in the direction of the essential forces exerted on the cradle-shaped body and the bow-shaped holding parts are not or only slightly loaded ,
  • the pot-shaped housing of the adjustable hydrostatic axial piston machine does not have to be provided with additional openings for the arrangement and assembly of the bearing of the cradle-shaped body, which enables a compact construction and results in additional noise insulation.
  • the shells are expediently provided with edges parallel to the central plane of the shaft journal which intersects the drive or output shaft at right angles, which form supports for fastening holding parts bent from the brackets.
  • the holding parts can be provided with fastening holes for fastening screws that can be screwed into the edges.
  • Fig. 1 shows an axial section through an adjustable hydrostatic axial piston pump with two cylinder blocks arranged on mutually coupled shafts and
  • FIG. 2 shows a section through the axial piston machine along the line A-A in FIG. 1.
  • FIG. 1 shows a longitudinal section through an adjustable hydrostatic double-axial piston machine, in which two drum-shaped cylinder blocks 3 are held on a coupled shaft, which consists of the shaft sections 1, by means of splines 2.
  • Distribution plates are basically a mirror image of the radial central plane except for the difference that the shaft 1 with its shaft journal 5 is led out of the housing 4, so that the invention is only described on the left part of the double axial piston pump, because the inventive bearing of the cradle-shaped body can of course also be implemented in a simple hydrostatic axial piston machine in which the end of the shaft 1 opposite the drive or driven shaft journal 5 is mounted in a cover which closes the cup-shaped housing.
  • the pot-shaped housing 4 has a bottom 6 with a stepped bore, in which the shaft 1 is supported by a roller bearing 7, which is supported in the usual manner by a bearing cover 8.
  • the pot-shaped housing 4 as can best be seen from FIG. 2, is provided in one piece on opposite sides with indentations 9 which have semi-cylindrical shells 10.
  • Indentations 9 which have semi-cylindrical shells 10.
  • the straight wall sections end at the steps 12 which delimit the recesses and which lie in a common radial housing plane which crosses the shaft 1 at right angles.
  • the cradle-shaped body 14 is provided on its two end sides with approximately cheek-shaped or disk-shaped shaft journals 15, on which roller bearings 16 are placed. These roller bearings 16 are inserted into the approximately semi-cylindrical recesses 10 of the recesses 9 and held in them by strip-shaped metal brackets 17, the legs 18 of which bent from their cylinder shell-shaped curved middle parts are provided with mounting holes which pass through the retaining screws 19 which pass through threaded holes on the steps 12 are screwed in.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Hydraulic Motors (AREA)

Abstract

L'invention concerne une machine hydrostatique à pistons axiaux réglable, qui comprend un bloc-cylindres en forme de tambour (3) monté solidaire en rotation sur un arbre d'entraînement ou de sortie (1) dont une extrémité est logée dans un alésage du fond (6) d'un carter en forme de creuset (4), et pourvu concentriquement et parallèlement à sa ligne médiane d'alésages de cylindre dans lesquels sont logés des pistons déplaçables axialement qui s'appuient, par l'intermédiaire de têtes sphériques, sur une surface inclinée ou sur une face inclinée d'un corps en berceau (14), logé pivotant dans le carter par des paliers à roulement (16) sur des tourillons d'arbre (15) et muni d'un entraînement de pivotement. La machine à pistons axiaux selon l'invention se caractérise en ce que le carter (4) est pourvu, sur sa face interne des deux côtés de l'arbre d'entraînement ou de sortie (1), de coques à peu près semi-cylindriques (10) dans lesquelles sont logés les paliers de roulement (16) et dans lesquelles ces paliers sont maintenus par des pièces de maintien en étrier (18).
PCT/EP2001/008559 2000-07-26 2001-07-24 Machine hydrostatique a pistons axiaux Ceased WO2002008573A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP01967219A EP1303682B1 (fr) 2000-07-26 2001-07-24 Machine hydrostatique a pistons axiaux
DE50109094T DE50109094D1 (de) 2000-07-26 2001-07-24 Hydrostatische axialkolbenmaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20012937U DE20012937U1 (de) 2000-07-26 2000-07-26 Hydrostatische Axialkolbenmaschine
DE20012937.6 2000-07-26

Publications (1)

Publication Number Publication Date
WO2002008573A1 true WO2002008573A1 (fr) 2002-01-31

Family

ID=7944434

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/008559 Ceased WO2002008573A1 (fr) 2000-07-26 2001-07-24 Machine hydrostatique a pistons axiaux

Country Status (3)

Country Link
EP (1) EP1303682B1 (fr)
DE (2) DE20012937U1 (fr)
WO (1) WO2002008573A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7201889B2 (en) 2002-01-25 2007-04-10 Kabushiki Kaisha Toshiba Fuel reforming method and system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013222602A1 (de) * 2013-11-07 2015-05-07 Robert Bosch Gmbh Hydrostatische Axialkolbenmaschine
CH712150A1 (de) * 2016-02-24 2017-08-31 Liebherr Machines Bulle Sa Axialkolbenmaschine, insbesondere Axialkolbenpumpe.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2236752A1 (de) * 1972-07-26 1974-02-07 Linde Ag Gehaeuse fuer eine axialkolbenmaschine
GB2169360A (en) * 1985-01-07 1986-07-09 Skf Svenska Kullagerfab Ab A plummer block housing
EP0307969A2 (fr) * 1985-05-28 1989-03-22 Honda Giken Kogyo Kabushiki Kaisha Variateur continu de vitesse hydrostatique
US4945817A (en) * 1989-10-24 1990-08-07 General Motors Corporation Axial piston device
WO1997001033A1 (fr) 1995-06-23 1997-01-09 Lg Electronics Inc. Appareil d'alimentation en refrigerant pour compresseur lineaire
WO1997001032A1 (fr) 1995-06-23 1997-01-09 Lg Electronics, Inc. Appareil d'alimentation en huile pour la partie a frottement d'un compresseur lineaire
EP0882914A2 (fr) * 1997-06-05 1998-12-09 The Cooper Split Roller Bearing Corporation Joint de palier en deux parties

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3606034A1 (de) * 1986-02-25 1987-08-27 Brueninghaus Hydraulik Gmbh Schwenklager fuer die verstellvorrichtung einer axial-kolbenmaschine
DE4002017A1 (de) * 1990-01-24 1991-07-25 Linde Ag Verstellbare axialkolbenmaschine in schraegscheibenbauweise
DE19538835C1 (de) * 1995-10-18 1997-03-13 Brueninghaus Hydromatik Gmbh Axialkolbenmaschine mit Querverstellung und Drehverstellung der Schwenkwiege

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2236752A1 (de) * 1972-07-26 1974-02-07 Linde Ag Gehaeuse fuer eine axialkolbenmaschine
GB2169360A (en) * 1985-01-07 1986-07-09 Skf Svenska Kullagerfab Ab A plummer block housing
EP0307969A2 (fr) * 1985-05-28 1989-03-22 Honda Giken Kogyo Kabushiki Kaisha Variateur continu de vitesse hydrostatique
US4945817A (en) * 1989-10-24 1990-08-07 General Motors Corporation Axial piston device
WO1997001033A1 (fr) 1995-06-23 1997-01-09 Lg Electronics Inc. Appareil d'alimentation en refrigerant pour compresseur lineaire
WO1997001032A1 (fr) 1995-06-23 1997-01-09 Lg Electronics, Inc. Appareil d'alimentation en huile pour la partie a frottement d'un compresseur lineaire
EP0882914A2 (fr) * 1997-06-05 1998-12-09 The Cooper Split Roller Bearing Corporation Joint de palier en deux parties

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7201889B2 (en) 2002-01-25 2007-04-10 Kabushiki Kaisha Toshiba Fuel reforming method and system

Also Published As

Publication number Publication date
EP1303682B1 (fr) 2006-03-01
EP1303682A1 (fr) 2003-04-23
DE20012937U1 (de) 2001-12-06
DE50109094D1 (de) 2006-04-27

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