EP2145105B1 - Machine à pistons axiaux - Google Patents

Machine à pistons axiaux Download PDF

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Publication number
EP2145105B1
EP2145105B1 EP08749455A EP08749455A EP2145105B1 EP 2145105 B1 EP2145105 B1 EP 2145105B1 EP 08749455 A EP08749455 A EP 08749455A EP 08749455 A EP08749455 A EP 08749455A EP 2145105 B1 EP2145105 B1 EP 2145105B1
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EP
European Patent Office
Prior art keywords
pivoting cradle
actuating
axial piston
piston machine
machine according
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.)
Active
Application number
EP08749455A
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German (de)
English (en)
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EP2145105A2 (fr
Inventor
Herbert Dreher
Clemens Krebs
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.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP2145105A2 publication Critical patent/EP2145105A2/fr
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Publication of EP2145105B1 publication Critical patent/EP2145105B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2078—Swash plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
    • F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate

Definitions

  • the first adjusting device and / or the second adjusting device preferably each have an adjusting piston for generating the actuating force. These can be acted upon in a simple manner in a pressure chamber with a control pressure. A simple control system without the use of additional, for example, electric actuators is therefore feasible.
  • the actuating force generated by a control pressure is thus directly on the pivoting cradle or an attachment of the pivoting cradle, such as a hold-down, transferable. It is particularly advantageous if in each case a blind bore is provided in the housing of the axial piston on one side opposite the pivoting cradle, in which the end remote from the pivoting cradle end of the actuating piston is arranged. Between the housing or the blind bore arranged therein and the adjusting piston, a pressure chamber is formed. The pressure in this pressure chamber thus directly determines the actuating force, which is ultimately used to adjust the inclination of the pivoting cradle.
  • a ball-and-socket joint is preferably provided which is partially relieved of hydrostatic lubrication.
  • a partially hydrostatically relieved ball joint is a ensures high reproducibility of the actuating movement.
  • the frictional forces between the actuating piston and the swivel cradle or the hold-down segment are reduced by the hydrostatic discharge. It is a locked ball and socket connection via which both tensile and compressive forces are transferable.
  • Such a design ensures a particularly low-backlash connection and thus increases the positioning accuracy.
  • the pivoting cradle is preferably pivotable in two opposite directions starting from a neutral position in which the surface normal runs a running surface of the pivoting cradle parallel to the axis of rotation.
  • the maximum pivoting in the two opposite directions is preferably the same size and can each be limited by the formation of a safety stop.
  • the adjustable first and second limiting devices are provided.
  • the first and / or the second adjusting device preferably have an elastic element, which acts on the pivoting cradle with a force acting in the first direction of movement and / or with a force acting in the second direction of movement.
  • the axial piston machine can be set to maximum displacement for a flow direction. Before commissioning therefore, for example, designed as a pump axial piston machine is set to its maximum displacement.
  • the elastic element is preferably designed as a spiral spring steel spring, which surrounds the adjusting piston of the first or the second actuator, wherein the coil spring is supported on a spring plate housing side.
  • the spring plate is according to a further preferred embodiment, either on a bottom of a cup-shaped housing part or in an alternative embodiment of an abutment ring, which is arranged spaced from the bottom of the cup-shaped housing part in the housing of the axial piston machine.
  • the axial piston machine 1 has a housing, which consists of a first cup-shaped housing part 3 and a second housing part, which is designed as a flange 4.
  • a housing which consists of a first cup-shaped housing part 3 and a second housing part, which is designed as a flange 4.
  • One in the Fig. 1 unrecognizable drive shaft is rotatable in the flange 4 and the stored, first cup-shaped housing part 3 and rotatably connected to the cylinder drum 2.
  • the cylinder drum 2 Upon rotation of the drive shaft, the cylinder drum 2 is rotated by the non-rotatable connection.
  • the arranged in the cylindrical drum 2 longitudinally displaceable piston based in a known manner on sliding blocks on a pivoting cradle 5 from.
  • the pivoting cradle 5 has a running surface 6 for this purpose.
  • the pivoting cradle 5 On its side facing the flange part 4, the pivoting cradle 5 has a pivotal pivot bearing 8.
  • at least one first bearing region is formed on the pivoting cradle 5, which forms a sliding bearing with a corresponding recess 9 of the flange part 4.
  • the inner wall of the bush 15 serves the first end 12 of the actuating piston 11 as a sliding surface and cooperates sealingly with the first end 12 of the first actuating piston 11.
  • the first end 12 of the actuating piston 11 is not cylindrical, but has a slightly convex shape to prevent tilting in the socket 15 at an oblique position of the actuating piston 11 relative to the longitudinal axis of the bushing 15.
  • a sealing ring could also be arranged.
  • the first adjusting device 10 is provided for swiveling out the axial piston machine 1 in the direction of maximum displacement volume.
  • the pressure chamber 13 is connected to the delivery side of the axial piston machine 1 designed as a pump.
  • the pending in the pressure chamber 13 high pressure is also used to cause a hydrostatic discharge of the pivoting cradle 5 in the flange 4.
  • This is both in the Hold-down segment 17 and in the pivoting cradle 5 a pressure medium channel 22 and 23, respectively.
  • the pressure medium channel 23 of the pivoting cradle 5 outside of in the FIG. 1 shown section connected to the storage area 8.
  • a dowel pin 24 is provided, which is inserted into a bore in the pivoting cradle 5 and a corresponding bore in the hold-down segment 17.
  • an adjustable first limiting device 25 is provided in the pot-shaped housing part 3 in the region of an end remote from the ball joint connection between the actuating piston 11 and the hold-down segment 17 of the hold-down segment 17.
  • the first limiting device 25 cooperates with a first stop surface 26, which is formed on the hold-down segment 17.
  • the first stop surface 26 is crowned, so that regardless of the setting of the first limiting device 25, the force is introduced by the limiting device 25 perpendicular to the first stop surface 26 and thus through the center of the crown. The center of this crowning is viewed from the stop surface in the direction of the pivoting cradle. 5
  • the first limiting device 25 comprises an adjusting screw 27, which is screwed into a thread provided for this purpose in a housing bore. Depending on the depth of engagement, the maximum deflection of the pivoting cradle 5 is determined by the first limiting device 25 in a first direction of movement.
  • the housing bore is arranged in the region of the jacket of the cup-shaped housing part 3. It encloses with the axis of rotation at an angle such that the central axis of the adjusting screw 27 extends through the center of the crowning of the stop surface 26.
  • the first adjusting device 10, the first limiting device 25 and the first hold-down segment 17 are all associated with a first direction of movement of the pivoting cradle 5. While the first adjusting device 10 attempts to adjust the pivoting cradle 5 in a first direction of movement, the first limiting device 25 serves as an adjustable stop and thus limits the maximum adjustment in this first direction of movement. To secure the adjusting screw 27 in a selected position, a lock nut 28 is provided. The lock nut 28 also serves to seal the housing interior from the environment. A safety cap 29 prevents unauthorized changing of the setting values.
  • the safety stop between the flange part 4 and the further stop face 30 of the first hold-down segment 17 is preferably formed.
  • the first adjusting device 10 and the first limiting device 25 are, as it is directly from the Fig. 1 results, arranged in a plane which is parallel to the axis of rotation of the cylinder drum 2 and which is in particular perpendicular to the pivot axis S of the pivoting cradle 5.
  • the direction of force both to initiate the actuating force by the first adjusting device 10 and the direction of force when it stops against the adjustable first limiting device 25 is thus also in the plane formed parallel to the axis of rotation. Since this plane runs simultaneously through a first bearing area formed on the pivoting cradle 5 and the flange part 4, torsional forces on the pivoting cradle 5 are avoided.
  • an elastic element is provided on the first adjusting device 10.
  • the elastic element is in the illustrated embodiment as a spring 33rd executed.
  • the spring 33 which is preferably a steel spiral spring, is supported on the one hand on a first spring bearing 31 formed in the vicinity of the second end 16.
  • the spring bearing 31 is formed as a radial shoulder in the actuating piston 11 and has a slightly extending in the axial direction in the direction of the first end 12 of the actuating piston 11 guide portion for centering the spring 33.
  • the spring 33 abuts against a second spring bearing 32.
  • the spring bearing 32 also has a guide portion which extends in the axial direction.
  • the spring bearing 32 is arranged in a centering recess 34 of the housing part 3 and rests there against the bottom of the cup-shaped housing part 3.
  • the spring bearing 32 is preferably at the same time at the bottom of the cup-shaped housing 3 at the bottom of the centering recess 34 and at the oriented to the interior of the housing of the axial piston 1 end of the bushing 15 at.
  • Fig. 1 is a section through the first adjusting device 10 and the first adjustable limiting device 25 defined plane shown.
  • the first adjusting device 10 is provided for adjusting the axial piston machine 1 in the direction of larger stroke volume and can therefore be referred to as Ausschwenkvorraum. This is true when the axial piston machine 1 as a hydraulic pump z. B. is used in the open circuit and is provided for promotion in one direction only.
  • a second adjusting device 35 is further provided, which in the illustration of Fig. 1 However, due to the location of the cut is not recognizable.
  • the second adjusting device 35 has also a second variable restricting device 39 and substantially corresponds to the first adjusting device 10.
  • the second adjusting device 35 and the second limiting device 39 are also in turn arranged in a common plane, said further plane parallel to the plane of the first adjusting device 10 and the first limiting device 25 is located.
  • the two planes are preferably symmetrical to the axis of rotation of the cylinder drum 2.
  • the first adjusting device 10 and the second adjusting device 35 lie on opposite sides with respect to the axis of rotation.
  • the second adjusting device 35 of the actuating system has an actuating piston, which is mounted with its first end in a second sleeve 36.
  • the second sleeve 36 is also inserted in a blind bore in the bottom of the cup-shaped housing part 3.
  • a second pressure chamber is formed in the sleeve 36, which is closed by the bottom of the cup-shaped housing part 3, as in the first adjusting device 10.
  • the pressure chamber or the pressure chamber is limited by a likewise spherical control piston disc.
  • the respectively crowned adjusting piston disk of both the adjusting piston 11 and the adjusting piston of the second adjusting device 35 is guided in the bush 15 or the further bushing 36.
  • To the other end of the actuating piston of the second adjusting device 35 is also formed a ball joint connection.
  • the second end 37 of the actuating piston of the second adjusting device 35 is also inserted into a spherical recess of a second hold-down segment 38.
  • the second hold-down segment 38 like the first hold-down segment 17, is connected to the pivoting cradle 5 by means of screws 18.
  • the first and second hold-down segments 17 and 38 are preferably identical.
  • the first hold-down segment 17 extends substantially along the plane in which the first adjusting device 10 and the first limiting device 25 are arranged. Accordingly, the second hold-down segment 38 extends substantially along a further plane in which the second adjusting device 35 and a second variable limiting device 39 are arranged.
  • the second variable restricting device 39 is similar in construction to the first variable restricting device 25, so that a description will be omitted.
  • the adjusting devices 10 and 35 are on a first diagonal in the region of the inner corners of the housing and the adjustable limiting devices 25 and 39 on a second diagonal in Area of the inner corners of the housing arranged.
  • the first actuator 10 is in the first quadrant, the first limiting device 25 in the fourth quadrant, the second actuator 35 in the third quadrant and the second adjustable one Limiting device 39 arranged in the second quadrant.
  • a stop surface 40 is also formed, which is designed crowned.
  • a further stop surface 41 is also formed on the second hold-down segment 38.
  • the further stop surface 41 is formed at the same end of the second hold-down segment 38 as the ball joint connection with the actuating piston of the second actuator 35.
  • the pivoting pivot bearing 8 of the pivoting cradle 5 is formed by a first bearing surface 8.1 and a second bearing surface 8.2.
  • the first bearing surface 8.1 extends in a width in the direction of the pivot axis S, so that the plane in which the first adjusting device 10 and the first adjustable limiting device 25 are arranged, ie in which the directions of force by the first adjusting device 10 and the first adjustable Limiting device 25 are, passes through the first bearing surface 8.1.
  • the second bearing surface 8.2 also extends over a width in the direction of the pivot axis S, so that the further plane in which the second adjusting device 35 and the second limiting device 39 are arranged, extends through the region of the second bearing surface 8.2.
  • FIG. 3 is again a perspective view of the control system of the axial piston machine 1 according to the invention.
  • the first adjusting device 10 and the second adjusting device 35 are shown in a section.
  • a counterpart to the further stop surface 40 is also shown.
  • This counterpart to the second stop surface 40 which cooperates with the second stop surface 40 to form a safety stop, can also be formed on the cup-shaped housing part 3, in particular in the case of a return pivoting device.
  • a lubricant passage 42 extending in the longitudinal direction is also provided in the adjusting piston of the second adjusting device 35.
  • This lubricant passage 42 connects the second pressure chamber formed in the second sleeve 36 with the ball joint between the actuator piston and the second hold-down segment 38.
  • the first pressure chamber 13 is made smaller in diameter than the second pressure chamber. This makes it possible in the first pressure chamber 13 always to leave the delivery-side high pressure of the axial piston machine 1 in the case of a pump. A pivoting in the direction of decreasing delivery volumes takes place when appropriate setting pressures in the second pressure chamber of the actuating piston of the second actuator 35.
  • the adjusting system is shown in its first end position, in which the stop surface 26 of the first hold-down segment 17 is in abutment with the first limiting device 25.
  • pivoting cradle 5 is penetrated centrally by a bore 45.
  • This bore 45 forms a passage for the drive shaft of the axial piston machine. 1
  • a slightly modified embodiment of the control system of the axial piston machine 1 according to the invention is shown.
  • a return of the position of the pivoting cradle 5 and thus of the actuating piston 11 'of the first adjusting device 10 allows.
  • a return element 50 is arranged on the actuating piston 11 '.
  • This return element 50 is fixedly connected to the actuating piston 11 ', so that the position of the return element 50 provides information about the respectively set delivery rate of the axial piston machine 1.
  • a return element 50 is advantageous for a swivel angle or power control of the axial piston machine 1 according to the invention.
  • a system of the spring plate 32 at the bottom of the cup-shaped housing part 3 is not possible. It is therefore an abutment ring 46 is provided which rests against a formed in the interior of the cup-shaped housing part 3 rib.
  • the abutment ring 46 in turn has a centering recess in which the spring plate 32 is arranged.
  • the spring plate 32 has a central bore through which the actuating piston 11 or 11 'extends.
  • the spring plate 32 is slotted C-shaped and is pushed laterally on the adjusting piston 11 and 11 'when the spring is compressed. In this case, the spring plate 32 is supported on the actuating piston.
  • the Fig. 5 shows a partial section through components of the control system of the invention Axial piston machine 1.
  • the course of the pressure channels in the first hold-down segment 17 and further in the pivoting cradle 5 is shown. It can be seen in particular that the pressure channel in the pivoting cradle 5 opens out in the region of the second bearing surface 8.2 and thus enables a hydrostatic relief of the pivoting cradle 5.

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

Claims (16)

  1. Machine à pistons axiaux comprenant un berceau pivotant (5) dont l'inclinaison par rapport à un axe de rotation d'un tambour cylindrique (2) peut être modifiée et comprenant un système de réglage agissant sur le berceau pivotant (5), avec un premier dispositif de réglage (10) pour le réglage de l'inclinaison du berceau pivotant (5) dans une première direction de déplacement et avec un deuxième dispositif de réglage (35) pour le réglage de l'inclinaison du berceau pivotant (5) dans une deuxième direction de déplacement opposée, le premier et le deuxième dispositif de réglage (10, 35) agissant sur le berceau pivotant (5) sur des côtés opposés par rapport à l'axe de rotation et comprenant un dispositif pour limiter le déplacement du berceau pivotant (5),
    caractérisée en ce que
    le dispositif pour limiter le déplacement du berceau pivotant présente un premier dispositif de limitation ajustable (25) et un deuxième dispositif de limitation ajustable (39), qui agissent à chaque fois sur le berceau pivotant (5) et qui sont disposés par rapport à l'axe de rotation sur des côtés opposés du berceau pivotant (5), les régions dans lesquelles le premier et le deuxième dispositif de réglage (10, 35) sont disposés et les régions dans lesquelles le premier et le deuxième dispositif de limitation (25, 39) sont disposés étant distinctes les unes des autres,
    le premier et le deuxième dispositif de limitation ajustable (25, 39) comprenant une vis d'ajustement (27, 39) qui est vissée dans un alésage de boîtier dans un filetage prévu à cet effet, et
    le premier et/ou le deuxième dispositif de réglage (10, 35) comprenant un élément élastique (33), qui sollicite le berceau pivotant (5) avec une force agissant dans la première direction de déplacement ou avec une force agissant dans la deuxième direction de déplacement.
  2. Machine à pistons axiaux selon la revendication 1,
    caractérisée en ce
    qu'un axe de pivotement (S) du berceau pivotant (5) et l'axe de rotation sont perpendiculaires l'un à l'autre et le premier dispositif de réglage (10) et/ou le deuxième dispositif de réglage (35) se situent dans un plan à chaque fois parallèle à l'axe de rotation et perpendiculaire à l'axe de pivotement (S).
  3. Machine à pistons axiaux selon la revendication 2,
    caractérisée en ce que
    le premier dispositif de réglage (10) et le premier dispositif de limitation (25) limitant le déplacement du berceau pivotant (5) dans la première direction sont disposés dans un plan dont la normale à la surface s'étend parallèlement à un axe de pivotement (S) du berceau pivotant (5) et/ou en ce que le deuxième dispositif de réglage (35) et le deuxième dispositif de limitation (39) limitant le déplacement du berceau pivotant (5) dans la deuxième direction sont disposés dans un autre plan dont la normale à la surface s'étend parallèlement à un axe de pivotement (S) du berceau pivotant (5).
  4. Machine à pistons axiaux selon l'une quelconque des revendications 1 à 3,
    caractérisée en ce que
    le premier dispositif de réglage (10) et/ou le deuxième dispositif de réglage (35) présentent à chaque fois un piston de réglage (11).
  5. Machine à pistons axiaux selon la revendication 4,
    caractérisée en ce que
    pour chaque piston de réglage (11) dans le boîtier (3, 4) est prévu un alésage borgne (14) sur le côté opposé au berceau pivotant (5), dans lequel est guidée l'extrémité du piston de réglage (11) respectivement opposée au berceau pivotant (5).
  6. Machine à pistons axiaux selon la revendication 5,
    caractérisée en ce que
    les pistons de réglage (11) présentent sur leur extrémité (12) disposée dans l'alésage borgne (14) un disque de piston de réglage bombé.
  7. Machine à pistons axiaux selon l'une quelconque des revendications 3 à 6,
    caractérisée en ce
    qu'une deuxième extrémité (16, 37) transmettant une force de réglage au berceau pivotant (5), d'un piston de réglage (11) respectif, est connectée au berceau pivotant (5) par le biais d'un segment de maintien (17, 38) respectif.
  8. Machine à pistons axiaux selon les revendications 3 à 7,
    caractérisée en ce que
    pour la connexion du piston de réglage (11) au berceau pivotant (5) ou au segment de maintien (17, 38), une liaison à tête sphérique est réalisée, laquelle est détendue de manière hydrostatique.
  9. Machine à pistons axiaux selon la revendication 7 ou 8,
    caractérisée en ce que
    chaque segment de maintien (17, 38) présente en outre une surface de butée (26, 40) pour limiter le déplacement du berceau pivotant (5) dans la direction de déplacement prédéfinie par le dispositif de réglage (10, 35) associé, et qui coopère avec le premier ou le deuxième dispositif de limitation correspondant (25, 39).
  10. Machine à pistons axiaux selon la revendication 9,
    caractérisée en ce
    qu'une surface de butée supplémentaire (30, 41) est en outre réalisée sur chaque segment de maintien (17, 38), laquelle coopère à chaque fois avec une pièce conjuguée (51) du côté du boîtier pour fournir une butée de sécurité.
  11. Machine à pistons axiaux selon la revendication 10,
    caractérisée en ce que
    la ou les pièces conjuguées (51) sont réalisées sur une partie de boîtier (3) en forme de pot ou sur une partie de bride (4).
  12. Machine à pistons axiaux selon l'une quelconque des revendications 1 à 9,
    caractérisée en ce que
    le premier dispositif de réglage (10) présente un premier piston de réglage (11) et/ou en ce que le deuxième dispositif de réglage (35) présente un deuxième piston de réglage, un canal de fluide sous pression étant réalisé dans au moins l'un des pistons de réglage (11), lequel relie l'alésage borgne associé (14) à l'extrémité (16) du piston de réglage (11) tournée vers le berceau pivotant (5).
  13. Machine à pistons axiaux selon la revendication 8,
    caractérisé en ce que
    dans le berceau pivotant (5) et/ou dans un segment de maintien (17, 38) sont réalisés d'autres canaux par le biais desquels du fluide sous pression peut être acheminé hors de l'alésage borgne (14) au moins à une surface de palier (8.1, 8.2) du berceau pivotant (5).
  14. Machine à pistons axiaux selon l'une quelconque des revendications 1 à 11,
    caractérisée en ce que
    le berceau pivotant (5) peut être pivoté dans deux directions opposées à partir d'une position neutre dans laquelle une normale à la surface d'une surface de roulement (6) du berceau pivotant (5) s'étend parallèlement à l'axe de rotation.
  15. Machine à pistons axiaux selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    l'élément élastique (33) est un ressort spiral (33) entourant un piston de réglage (11) du premier ou du deuxième dispositif de réglage (10, 35), lequel s'appui sur une coupelle de ressort (32) du côté du boîtier.
  16. Machine à pistons axiaux selon la revendication 15,
    caractérisée en ce que
    la coupelle de ressort (32) s'applique contre un fond d'une partie de boîtier (3) en forme de pot ou s'applique contre une bague d'appui (46) à distance du fond de la partie de boîtier (3) en forme de pot.
EP08749455A 2007-05-14 2008-05-14 Machine à pistons axiaux Active EP2145105B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007022567A DE102007022567A1 (de) 2007-05-14 2007-05-14 Axialkolbenmaschine
PCT/EP2008/003868 WO2008138604A2 (fr) 2007-05-14 2008-05-14 Machine à pistons axiaux

Publications (2)

Publication Number Publication Date
EP2145105A2 EP2145105A2 (fr) 2010-01-20
EP2145105B1 true EP2145105B1 (fr) 2012-11-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08749455A Active EP2145105B1 (fr) 2007-05-14 2008-05-14 Machine à pistons axiaux

Country Status (5)

Country Link
US (1) US8261654B2 (fr)
EP (1) EP2145105B1 (fr)
JP (1) JP5144750B2 (fr)
DE (1) DE102007022567A1 (fr)
WO (1) WO2008138604A2 (fr)

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US8647075B2 (en) 2009-03-18 2014-02-11 Eaton Corporation Control valve for a variable displacement pump
WO2012003824A1 (fr) * 2010-07-08 2012-01-12 Robert Bosch Gmbh Machine hydraulique à piston axial
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DE102011116962A1 (de) 2010-10-30 2012-05-03 Robert Bosch Gmbh Axialkolbenmaschine
DE102011113533A1 (de) * 2011-09-15 2013-03-21 Robert Bosch Gmbh Hydrostatische Axialkolbenmaschine
GB2502824A (en) * 2012-06-08 2013-12-11 Water Hydraulics Company Ltd Axial piston variable stroke hydraulic machine
CN105339657B (zh) * 2013-05-22 2018-01-12 贺德克传动中心有限公司 以斜盘式结构形式的轴向活塞泵
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FR1590650A (fr) * 1968-07-08 1970-04-20
US3830594A (en) * 1971-06-28 1974-08-20 Caterpillar Tractor Co Variable displacement pump having pressure compensator control method
GB1548095A (en) 1976-05-10 1979-07-04 Bryce J M Apparatus and method for attaching a wire to a supporting post
US4168653A (en) * 1976-12-20 1979-09-25 Caterpillar Tractor Co. Two position variable displacement motor
JPH0526151A (ja) * 1991-07-16 1993-02-02 Toyota Autom Loom Works Ltd 油圧駆動装置
US6705203B2 (en) 2001-11-28 2004-03-16 Sauer-Danfoss Inc. Extended male slipper servo pad arrangement for positioning swashplate and method assembling same
DE102006062065A1 (de) 2006-12-29 2008-07-03 Robert Bosch Gmbh Axialkolbenmaschine mit einem einen radial erweiterten Innenraumabschnitt aufweisenden Gehäuse

Also Published As

Publication number Publication date
WO2008138604A3 (fr) 2009-09-17
EP2145105A2 (fr) 2010-01-20
US8261654B2 (en) 2012-09-11
JP5144750B2 (ja) 2013-02-13
JP2010526246A (ja) 2010-07-29
WO2008138604A2 (fr) 2008-11-20
DE102007022567A1 (de) 2008-11-20
US20100307330A1 (en) 2010-12-09

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