EP1008748B1 - Machine à pistons axiaux - Google Patents

Machine à pistons axiaux Download PDF

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Publication number
EP1008748B1
EP1008748B1 EP99124139A EP99124139A EP1008748B1 EP 1008748 B1 EP1008748 B1 EP 1008748B1 EP 99124139 A EP99124139 A EP 99124139A EP 99124139 A EP99124139 A EP 99124139A EP 1008748 B1 EP1008748 B1 EP 1008748B1
Authority
EP
European Patent Office
Prior art keywords
axial piston
piston machine
machine according
control plate
holding parts
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
EP99124139A
Other languages
German (de)
English (en)
Other versions
EP1008748A3 (fr
EP1008748A2 (fr
Inventor
Rolf Brockerhoff
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.)
Brueninghaus Hydromatik GmbH
Original Assignee
Brueninghaus Hydromatik GmbH
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 Brueninghaus Hydromatik GmbH filed Critical Brueninghaus Hydromatik GmbH
Publication of EP1008748A2 publication Critical patent/EP1008748A2/fr
Publication of EP1008748A3 publication Critical patent/EP1008748A3/fr
Application granted granted Critical
Publication of EP1008748B1 publication Critical patent/EP1008748B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04B1/26—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
    • F04B1/328—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 axis of the cylinder barrel relative to the swash plate
    • 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
    • F04B1/2042—Valves
    • 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
    • F04B1/2064—Housings
    • F04B1/2071—Bearings for cylinder barrels

Definitions

  • the invention relates to an axial piston machine the preamble of claim 1.
  • An axial piston machine of this type is in the DE-AS 1 017 468.
  • This is a so-called oblique-axis design with a cylinder drum which displaceably receives the pistons in cylinder bores and which can be pivoted by an adjusting device about a pivot axis arranged in the region of the drive disk and can be fixed in the respective pivot position.
  • the flow rate of the axial piston machine can be adjusted, as it is known.
  • the axial piston machine forms the cylinder drum with a control disk attached to the Front side of the cylinder drum is arranged, which is the Drive pulley facing away, a pivoting unit that out and her is pivotable, with the control disc on one order the pivot axis curved arcuate Lagergleit Colour a bearing wall of the housing Axial piston machine rests and is guided sliding. Consequently, the control disk between the Lagergleit Chemistry and the associated end face of the cylinder drum positioned. This positioning and the attachment to the Lagergleitfiguration can in functional operation of Axial piston machine can not always be guaranteed.
  • the invention is based on the object at a Axial piston machine of the type specified in the Support the control disc to improve and to stabilize.
  • the axial piston according to the invention is due the parallel to the bearing sliding surface extending curvature of the Support surface a support point for the control disk for Available, in which the control disc in each Pivoting position is supported in its central area, whereby the above-described harmful tilting moments are diminished and the support of the control disc in the desired sense is improved and stabilized.
  • the desired improvement and stabilization will then also achieved when the length of the support surface is slightly shorter is measured as the by the pivoting angle range given dimension, because due to the rounding of Support surface this even at a slightly shorter length yet is effective.
  • the bearing sliding surface a curvature corresponding to the support surface on. This results in a flat contact with these contact surfaces to each other, creating a low surface pressure and friction and a long life are guaranteed.
  • the invention is characterized by a simple, small and inexpensive manufacturable construction, which is good in the construction of an axial piston machine integrate and also easy to mount or dismantle and is of safe function.
  • FIG. 1 The illustrated in Fig. 1 in longitudinal section Axial piston machine 1 is in Schiefachsenbauweise, more precisely in Schwenkschlittenbauweise trained.
  • the axial piston machine 1 comprises a in a housing 2 in Rolling 3, 4 rotatably mounted drive shaft 5, on which a drive shaft flange or a so-called drive disk 6 is arranged or molded.
  • the housing 2 encloses a housing interior, in which a cylinder drum 7, in which multiple cylinder bores 8, 9 on a pitch circle are provided evenly distributed, is arranged.
  • a Cylinder bores 8, 9 are pistons 10, 11 back and forth slidably guided, the articulated on the drive pulley. 6 supported, z. B. by ball heads 12, 13, in spherical bearings 14, 15 of the drive disk 6 supported are.
  • the cylinder drum 7 is connected via a center pin 16 stored in the drive disk 6, wherein a ball head 17 of the Center pin 16 in a spherical bearing 18 of the Drive disk 6 is also pivotally mounted.
  • the cylinder drum 7 is supported by a known Way with steered control disc 19 at a Lagergleit Structure 21 from which on a bearing wall 22nd is formed by a housing wall, in particular a so-called end plate of a cup-shaped housing. 2 can be formed.
  • the flow rate of the axial piston machine 1 is in known manner by pivoting the Cylinder drum 7 and the control disk 19, the one Form pivot unit, with respect to the central axis of the Drive shaft 5 adjustable.
  • the maximum Throughput volume or the minimum throughput volume an externally adjustable threaded bolt adjustable, the in each case one movement stop A1, A2 for the control disk 19 form.
  • a Adjusting device 23 is provided, which in the present Embodiment is arranged in a housing 24, which as Housing wall forms the bearing wall 22.
  • a housing 24 In the housing 24 is a in or parallel to the pivot plane E transverse to the axis of rotation the cylinder drum 7 slidably mounted back and forth Adjusting piston provided with an adjusting member 25th articulated on the control disk 19 attacks.
  • the Adjustment member 25 may by a transverse from the adjusting piston be formed protruding adjusting pin on his free end of a spherical or spherical section-shaped Adjusting head 26, in a him with a low Movement play receiving engagement recess 27 in the Control disc 19 engages and one between the Control disk 19 and the adjusting piston 24 existing natural Bachsaus Principleung 28 in the associated wall of the Housing 24 passes through.
  • the Lagergleit Structure 21 is a concave base of a Guide recess 29 in the bearing wall 22, whose parallel to the pivoting plane E arranged lateral guide surfaces 21a, the control disk 19 laterally with low Cause movement play.
  • the cylinder drum 7 has at its the control disk 19th facing front a concave, spherical Lagergleit Structure 7b and it is thus at one correspondingly convex spherical bearing surface 19a of the Control disk 19 on. This indicates on its outside at least one of the bearing sliding surface 21 accordingly curved sliding surface 19b.
  • the control disk 19 is a generally designated 31 Holding device associated with the bearing wall 22nd arranged or fixed and the control disk 19 at engages behind the cylinder drum 7 side and thereby secures to the inward side.
  • a holding part 32 this Hold function that the control disk 19 with a Shoulder surface 33 engages behind, parallel to Lagergleit Structure 21 curved and thus circular arc section runs, wherein the Shoulder surface 33 opposite surface part of the Control disk 19 a with the shoulder surface 33rd cooperating support member 34 with a support surface 34a forms.
  • the support surface 34a may be perpendicular to the Swing plane E seen - just extend like it can be seen in particular from Fig. 4, or it can - at right angles to the pivoting plane E - parallel to the Curvature of the shoulder surface 33 run and thus the Curvature of the shoulder surface 33 correspond, as shown in FIG. 5 shows.
  • the shoulder surface 33 and the support surface 34 are preferably surfaces that are - perpendicular to the axis of rotation the cylinder drum 7 and in or parallel to the pivot plane E - at right angles to the pivot plane E extend. at the embodiment of FIG. 3, wherein the support surface 34 a at right angles to the swivel plane - straight extends, this results in a linear system between the shoulder surface 33 and the support surface 34a.
  • the holding parts 32 are strip-shaped parts by screws 36 with screwed the bearing wall 22 and optionally by pins 36a are pinned.
  • the support surface 34a is respectively at least in the control disk 19 cross-section (Dimension c) arranged.
  • the entire base area of the holding parts 32 accordingly cylindrical section shaped, d. H. she is through one extending parallel to the bearing sliding surface 21 Cylinder-shaped surface formed.
  • the associated contact surface 37 on the bearing wall 22 form with a corresponding shape, which is a recess 38 results in each of the associated Holding part 32 can be used.
  • the width of the recess 38 is dimensioned smaller by the dimension c than the width d of the Holding parts 32, so that a positive Positioning for the holding part 32 in the transverse direction results.
  • the at least one screw 36 or a pin 36a fixes the respective holding part 32 in parallel to the pivot plane E extending longitudinal direction.
  • 32a are Recesses on the inside of the holding parts 32 for the Cylinder drum 7 is arranged, in which the cylinder drum. 7 dips to save floor space.
  • Fig. 3 is in order simplified representation of the recess 32 a broken away shown.
  • Fig. 4 makes it clear that in the inventive design, the control disk 19 in each pivot position in its middle, her support element 34 forming area B and thus centrally through the respective Support member 32 is supported. This is special Advantage, since in each pivot position tilting moments avoided be, as in the known described above Design occur.
  • the adjusting member 25 is formed so that it is mounted thereafter can be z. B. by as a through hole in the Control disk 19 formed engagement recess 27th
  • the Control disk 19 by means of the holding device 31st positively held in their working position in which they flat against the bearing sliding surface 21 rests.
  • a pressing device 41 to provide a pressing device 41.
  • This can, for. B. by a between the center pin 16 and the cylinder drum 7 be formed effective spring.

Landscapes

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

Claims (10)

  1. Machine à pistons axiaux (1) comprenant un tambour cylindrique (7) monté mobile en rotation dans un carter (2), tambour dans lequel des pistons (9) sont montés mobiles en translation dans des perçages cylindriques (8), dont les extrémités de piston sont soutenues avec faculté de pivotement sur un disque d'entraínement (6) monté mobile en rotation, dans laquelle le tambour cylindrique (7) et un disque de commande (19) agencé sur le côté du tambour cylindrique (7) détourné du disque d'entraínement (6) sont capables de pivoter transversalement dans un plan de pivotement (E) via un dispositif de déplacement (21), dans laquelle le disque de commande (19) est monté avec faculté de pivotement dans le plan de pivotement (E) sur une surface coulissante de portée (21) tournée vers celui-ci et cintrée en forme d'arc de cercle dans un évidement de guidage (29) dans une paroi de portée (22), et deux éléments de retenue (32) qui s'étendent parallèlement au plan de pivotement (E) sont agencés sur la paroi de portée (22) de part et d'autre du plan de pivotement (E) et engagent par l'arrière, chacun par une surface d'épaulement (33), au moins un élément de soutien (34) tourné vers le tambour cylindrique sur le disque de commande (19),
    caractérisée en ce que les surfaces d'épaulement (33) sur les éléments de retenue (32) sont cintrées parallèlement à la surface coulissante de portée (21) et s'étendent au moins approximativement dans la zone angulaire (e) qu'enferme l'axe médian (7a) du disque de commande (19) dans la position pivotée vers l'extérieur et dans la position pivotée vers l'intérieur,
    et en ce que les éléments de retenue (32) sont des pièces séparées en forme de baguette qui sont vissées sur la paroi de portée (22) à côté de l'évidement de guidage (29) et qui dépassent par la surface d'épaulement (33) (distance c) au-delà du bord latéral associé de l'évidement de guidage (29).
  2. Machine à pistons axiaux selon la revendication 1, caractérisée en ce que la surface d'épaulement (33) s'étend sur une longueur (L) qui correspond au moins approximativement à la dimension du double de la zone angulaire (e) qui résulte sur ladite surface.
  3. Machine à pistons axiaux selon la revendication 2, caractérisée en ce que la surface d'épaulement (33) est agencée à symétrie par rapport à l'axe médian (7a) du disque de commande (19) dans sa position pivotée vers l'intérieur ou dans sa position zéro.
  4. Machine à pistons axiaux selon l'une des revendications précédentes, caractérisée en ce que la surface d'épaulement (33) et une surface de soutien (34a) formant l'élément de soutien (34) s'étendent parallèlement, vues sur l'axe médian (7a) du disque de commande (19) et le long du plan de pivotement (E).
  5. Machine à pistons axiaux selon l'une des revendications précédentes, caractérisée en ce qu'une surface de soutien (34a) formant l'élément de soutien (34) est une surface plane qui s'étend en sécante par rapport à la surface coulissante de portée (21).
  6. Machine à pistons axiaux selon l'une des revendications précédentes, caractérisée en ce que la surface de soutien (34a) est cintrée parallèlement à la surface d'épaulement (33).
  7. Machine à pistons axiaux selon l'une des revendications précédentes, caractérisée en ce que les éléments de retenue (32) engagent par l'arrière les bords latéraux du disque de commande (19).
  8. Machine à pistons axiaux selon la revendication 7, caractérisée en ce que les éléments de retenue (32) engagent par l'arrière le disque de commande (19) dans des évidements latéraux (19c).
  9. Machine à pistons axiaux selon l'une ou l'autre des revendications 7 et 8, caractérisée en ce que les éléments de retenue (32) sont agencés en étant noyés partiellement ou complètement dans des évidements (38) de la paroi de portée.
  10. Machine à pistons axiaux selon l'une des revendications 7 à 9, caractérisée en ce que les surfaces d'épaulement (33) s'étendent chacune sur tout le côté associé de l'élément de retenue concerné (32) et forment sa surface de fond, et les évidements (38) sont formés chacun par une surface cintrée à concavité correspondante.
EP99124139A 1998-12-11 1999-12-02 Machine à pistons axiaux Expired - Lifetime EP1008748B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19857366 1998-12-11
DE19857366A DE19857366C2 (de) 1998-12-11 1998-12-11 Axialkolbenmaschine

Publications (3)

Publication Number Publication Date
EP1008748A2 EP1008748A2 (fr) 2000-06-14
EP1008748A3 EP1008748A3 (fr) 2000-12-20
EP1008748B1 true EP1008748B1 (fr) 2005-02-09

Family

ID=7890853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99124139A Expired - Lifetime EP1008748B1 (fr) 1998-12-11 1999-12-02 Machine à pistons axiaux

Country Status (2)

Country Link
EP (1) EP1008748B1 (fr)
DE (2) DE19857366C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7594802B2 (en) 2004-04-21 2009-09-29 The United States Of America As Represented By The Administrator Of The U.S. Environmental Protection Agency Large angle sliding valve plate pump/motor
DE102018213385A1 (de) * 2018-08-09 2020-02-13 Robert Bosch Gmbh Entspannungsausnehmung in Steuerscheibe für Axialkolbenmaschine
DE102018214165A1 (de) * 2018-08-22 2020-02-27 Robert Bosch Gmbh Steuerplatte für Axialkolbenmaschine und Axialkolbenmaschine mit Steuerplatte

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7363849B2 (en) 2003-06-11 2008-04-29 Brueninghaus Hydromatik Gmbh Axial piston machine with offset positioning element and cam disk for such an axial piston machine
DE102010026645A1 (de) 2010-07-09 2012-01-12 Robert Bosch Gmbh Hydraulische Energiewandlungsmaschine
DE102011075077A1 (de) * 2011-05-02 2012-11-08 Zf Friedrichshafen Ag Axialkolbenmaschine in Schrägachsenbauweise

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1017468B (de) * 1953-01-24 1957-10-10 Georg Wiggermann Axialkolbenmaschine
US3233555A (en) * 1962-08-16 1966-02-08 Gunnar A Wahlmark Variable displacement fluid device
FR2327422A1 (fr) * 1975-10-07 1977-05-06 Renault Machine hydraulique a pistons axiaux
JPS62671A (ja) * 1985-06-26 1987-01-06 Komatsu Ltd 斜軸式アキシヤルピストンポンプ・モ−タの可変装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7594802B2 (en) 2004-04-21 2009-09-29 The United States Of America As Represented By The Administrator Of The U.S. Environmental Protection Agency Large angle sliding valve plate pump/motor
DE102018213385A1 (de) * 2018-08-09 2020-02-13 Robert Bosch Gmbh Entspannungsausnehmung in Steuerscheibe für Axialkolbenmaschine
DE102018214165A1 (de) * 2018-08-22 2020-02-27 Robert Bosch Gmbh Steuerplatte für Axialkolbenmaschine und Axialkolbenmaschine mit Steuerplatte

Also Published As

Publication number Publication date
DE19857366A1 (de) 2000-06-29
EP1008748A3 (fr) 2000-12-20
DE19857366C2 (de) 2000-10-19
DE59911593D1 (de) 2005-03-17
EP1008748A2 (fr) 2000-06-14

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