EP1303682B1 - Machine hydrostatique a pistons axiaux - Google Patents

Machine hydrostatique a pistons axiaux Download PDF

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Publication number
EP1303682B1
EP1303682B1 EP01967219A EP01967219A EP1303682B1 EP 1303682 B1 EP1303682 B1 EP 1303682B1 EP 01967219 A EP01967219 A EP 01967219A EP 01967219 A EP01967219 A EP 01967219A EP 1303682 B1 EP1303682 B1 EP 1303682B1
Authority
EP
European Patent Office
Prior art keywords
shaped
axial piston
piston machine
housing
drive
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
EP01967219A
Other languages
German (de)
English (en)
Other versions
EP1303682A1 (fr
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
Publication of EP1303682A1 publication Critical patent/EP1303682A1/fr
Application granted granted Critical
Publication of EP1303682B1 publication Critical patent/EP1303682B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 whose one end is mounted in a bore of the bottom of a pot-shaped housing and is provided concentrically and parallel to the center line with cylinder bores in which axially displaceable pistons are arranged, which are supported by spherical heads on a swash plate or an oblique side of a rolling bearing on shaft journal pivotally mounted in the housing and provided with a pivoting drive cradle-shaped body.
  • adjustable hydrostatic axial piston machines of the type described above are known in which the shaft journals of the crescent-shaped body are mounted on roller bearings in bores of the housing, which are closed by conventional bearing caps.
  • the object of the invention is to provide an adjustable hydrostatic axial piston machine of the type specified, which is provided with a simple and encapsulated in the housing storage for the shaft journals of the weighing body.
  • the housing is provided on its inner side on both sides of the drive or output shaft with approximately semi-cylindrical shells, in which the rolling bearings used and in which they are held by bow-shaped holding parts.
  • the housing semi-cylindrical shells on the inclined surface of the cradle-shaped body opposite side, so that they lie in the direction of the force exerted on the cradle-shaped body essential forces and the bow-shaped holding parts are not or only slightly loaded ,
  • the cup-shaped housing of the adjustable hydrostatic axial piston machine need not be provided with additional openings for the arrangement and assembly of the storage of the weighing body, which allows a compact construction and has an additional noise reduction result.
  • the shells are parallel to the drive or output shaft perpendicular intersecting center plane of the shaft journals provided with edges that form pads for attachment of bent from the brackets holding parts.
  • the holding parts can be provided with mounting holes for screwing in the edges mounting screws.
  • Fig. 1 is a longitudinal section through an adjustable hydrostatic Doppelaxialkolbenmaschine can be seen in which on a coupled shaft, which consists of the shaft sections 1, two drum-shaped cylinder blocks 3 are supported via splines.
  • the two on the shaft 1 arranged cylinder blocks 3 with associated cup-shaped housings 4 ⁇ lzu- and -ab Entryen and control or distributor plates are basically mirror images of the radial center plane built up to the difference that the shaft 1 with its shaft 5 from the housing 4th led out, so that the invention is described only on the left part of the Doppelaxialkolbenpumpe, because the inventive storage of the crescent-shaped body can of course be realized in a simple hydrostatic axial piston machine, in which the drive or driven shaft journal 5 opposite end of the shaft 1 in a lid closing the pot-shaped housing is mounted.
  • the cup-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 by a bearing cover 8 in a conventional manner.
  • the pot-shaped housing 4 is, as best seen in FIG. 2 can be seen, provided on opposite sides in one piece with recesses 9, the semi-cylindrical shells 10 have.
  • At this semi-cylindrical Shells join straight portions 11 which form straight wall portions which are approximately tangent to the cup-shaped recesses and connect via rounded portions to the cup-shaped recesses and can be slightly bevelled outwards.
  • the straight wall sections terminate at the recesses limiting steps 12, which lie in a common radial housing plane, which intersects the shaft 1 at right angles.
  • the cradle-shaped body 14 is provided at its two end sides with approximately cheek-shaped or disk-shaped shaft journals 15, are mounted on the roller bearings 16. These bearings 16 are inserted into the approximately semi-cylindrical recesses 10 of the recoveries 9 and held in these by strip-shaped metal bracket 17, which are provided by the cylinder cup-shaped curved middle portions bent legs 18 with mounting holes, the retaining screws 19 prevail, in threaded holes on the steps 12th 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)

Claims (3)

  1. Machine hydrostatique réglable à pistons axiaux, comprenant un bloc-cylindres (3) en forme de tambour, lequel est fixé de manière solidaire en rotation sur un arbre d'entraînement ou de sortie (1) dont une extrémité est montée dans un alésage du fond (6) d'un carter en forme de pot (4) et est pourvu d'alésages cylindriques concentriquement et parallèlement à son axe médian, dans lesquels des pistons déplaçables axialement sont disposés, lesquels s'appuient par le biais de têtes sphériques sur une surface oblique ou un côté oblique d'un corps en forme de berceau (14) monté dans le carter (4) de manière à pouvoir pivoter par des paliers à roulements sur des tourillons d'arbre (15) et pourvu d'un entraînement de pivotement,
    caractérisée en ce que
    le carter (4) est pourvu sur son côté interne, des deux côtés de l'arbre d'entraînement ou de sortie (1), de coques approximativement semi-cylindriques (10) dans lesquelles sont insérés les paliers à roulements (16) et dans lesquelles ceux-ci sont maintenus par des pièces de retenue en forme d'étrier (17).
  2. Machine à pistons axiaux selon la revendication 1, caractérisée en ce que les coques (10) sont pourvues, parallèlement au plan médian des tourillons d'arbre coupant à angle droit l'arbre d'entraînement ou de sortie (1), de bords (12) qui forment les appuis pour la fixation des pièces de retenue (18) recourbées à l'écart des étriers (17).
  3. Machine à pistons axiaux selon la revendication 1 ou 2, caractérisée en ce que les pièces de retenue (18) sont pourvues d'alésages de fixation pour des vis de fixation (19) pouvant être vissées dans les bords (12).
EP01967219A 2000-07-26 2001-07-24 Machine hydrostatique a pistons axiaux Expired - Lifetime EP1303682B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20012937U DE20012937U1 (de) 2000-07-26 2000-07-26 Hydrostatische Axialkolbenmaschine
DE20012937U 2000-07-26
PCT/EP2001/008559 WO2002008573A1 (fr) 2000-07-26 2001-07-24 Machine hydrostatique a pistons axiaux

Publications (2)

Publication Number Publication Date
EP1303682A1 EP1303682A1 (fr) 2003-04-23
EP1303682B1 true EP1303682B1 (fr) 2006-03-01

Family

ID=7944434

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01967219A Expired - Lifetime EP1303682B1 (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
CN104632283A (zh) * 2013-11-07 2015-05-20 罗伯特·博世有限公司 流体静力的轴向柱塞机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3930331B2 (ja) 2002-01-25 2007-06-13 東芝三菱電機産業システム株式会社 燃料改質方法およびそのシステム
CH712150A1 (de) * 2016-02-24 2017-08-31 Liebherr Machines Bulle Sa Axialkolbenmaschine, insbesondere Axialkolbenpumpe.

Family Cites Families (10)

* 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
GB2169360B (en) * 1985-01-07 1988-10-05 Skf Svenska Kullagerfab Ab A plummer block housing
DE3686268T2 (de) * 1985-05-28 1992-12-17 Honda Motor Co Ltd Stufenlos regelbares hydrostatisches getriebe.
DE3606034A1 (de) * 1986-02-25 1987-08-27 Brueninghaus Hydraulik Gmbh Schwenklager fuer die verstellvorrichtung einer axial-kolbenmaschine
US4945817A (en) * 1989-10-24 1990-08-07 General Motors Corporation Axial piston device
DE4002017A1 (de) * 1990-01-24 1991-07-25 Linde Ag Verstellbare axialkolbenmaschine in schraegscheibenbauweise
EP0777827B1 (fr) 1995-06-23 2001-12-05 Lg Electronics Inc. Appareil d'alimentation en refrigerant pour compresseur lineaire
JP2905600B2 (ja) 1995-06-23 1999-06-14 エルジー電子株式会社 リニアコンプレッサの摩擦部分用の給油装置
DE19538835C1 (de) * 1995-10-18 1997-03-13 Brueninghaus Hydromatik Gmbh Axialkolbenmaschine mit Querverstellung und Drehverstellung der Schwenkwiege
US5836700A (en) * 1997-06-05 1998-11-17 Cooper Split Roller Bearing Corporation Split bearing seal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104632283A (zh) * 2013-11-07 2015-05-20 罗伯特·博世有限公司 流体静力的轴向柱塞机

Also Published As

Publication number Publication date
DE50109094D1 (de) 2006-04-27
DE20012937U1 (de) 2001-12-06
WO2002008573A1 (fr) 2002-01-31
EP1303682A1 (fr) 2003-04-23

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