EP2024639A1 - Machine a piston axial munie d'un tenon de pesage a suspension hydrostatique - Google Patents

Machine a piston axial munie d'un tenon de pesage a suspension hydrostatique

Info

Publication number
EP2024639A1
EP2024639A1 EP07725378A EP07725378A EP2024639A1 EP 2024639 A1 EP2024639 A1 EP 2024639A1 EP 07725378 A EP07725378 A EP 07725378A EP 07725378 A EP07725378 A EP 07725378A EP 2024639 A1 EP2024639 A1 EP 2024639A1
Authority
EP
European Patent Office
Prior art keywords
axial piston
piston machine
recess
sliding block
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.)
Withdrawn
Application number
EP07725378A
Other languages
German (de)
English (en)
Inventor
Rainer Stölzer
Günter Wanschura
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 EP2024639A1 publication Critical patent/EP2024639A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/06—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis
    • F03C1/0636—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F03C1/0644—Component parts
    • F03C1/0668—Swash or actuated plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/06—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis
    • F03C1/0678—Control
    • F03C1/0686—Control by changing the inclination of 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
    • F04B1/26—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

Definitions

  • the invention relates to an axial piston machine according to the preamble of claim 1.
  • Aligned components are characterized by a high design complexity.
  • the adjusting device acting on the pivoting cradle via a pivot pin and an arm for adjusting the pivoting cradle has an actuating piston with a recess into which the cradle pin provided with a sliding block engages, and bores, wherein the bores in the pivoting cradle, in the arm and in the rocker pin are formed and open into the recess of the actuating piston.
  • hydraulic medium is guided into the recess, in which engages the rocker pin with the sliding block, and formed a lubricating film, which ensures a low-friction adjustment of the pivoting cradle of the axial piston machine and for damping the pulsations occurring during operation.
  • Fig. 1 shows an embodiment of a
  • Fig. 2 is a schematic side view of a pivoting cradle according to a preferred
  • FIG. 3 is a plan view of the pivoting cradle of FIG .. 2
  • Fig. 1 shows a better understanding of the measures according to the invention, first in a sectional view of an axial piston machine in swash plate design with adjustable displacement volume and a current direction according to the prior art.
  • the axial piston machine comprises in a known manner as essential components a hollow cylindrical housing 1 with an end open end, which is in Fig. 1 above, one attached to the housing 1, the open end occlusive Terminal Block; 2, a lifting or swash plate 3, a control body 4, a drive shaft 5, a cylinder drum 6 and an optional cooling circuit 7.
  • the swash plate 3 is formed as a so-called pivoting cradle with a semi-cylindrical cross-section and is supported with two mutually spaced parallel to the pivot direction bearing surfaces under hydrostatic discharge on two correspondingly shaped bearing shells 8, which on the inner surface of the
  • Terminal block 2 opposite housing end wall 9 are attached.
  • the hydrostatic discharge takes place in a known manner via pressure pockets 10 which are formed in the bearing shells 8 and are supplied via connections 11 with pressure medium.
  • a positioning device 13 accommodated in a bulge of the cylindrical housing wall 12 engages over an arm 14 of the swashplate 3 extending in the direction of the connection block 2 and serves to pivot the same about a pivot axis perpendicular to the pivoting direction.
  • the control body 4 is fixed to the housing interior facing the inner surface of the terminal block 2 and provided with two through openings 15 in the form of kidney-shaped control slots, which are connected via a pressure channel 16D or suction channel 16S in the terminal block 2 to a pressure and suction line, not shown are.
  • the pressure channel 16D has a smaller flow cross-section than the suction channel 16S.
  • the housing interior facing and spherically formed control surface of the control body 4 serves as a bearing surface for the cylinder drum.
  • the drive shaft 5 protrudes through a through hole in the housing end wall 9 in the housing 1 and is by means of a bearing 17 in this through hole and by means of another bearing 18 in a narrower bore portion of an end extended blind bore 19 in the terminal block 2 and one closer to this Bore portion adjacent region of a central through hole 20 in the control body 4 rotatably mounted.
  • the drive shaft 5 passes through in the interior of the housing 1 also has a central through hole 21 in the swash plate 3, whose diameter is dimensioned according to the largest swing deflection of the swash plate 3, and a central through hole in the cylinder drum 6 with two bore sections.
  • One of these bore sections is formed in a sleeve-shaped extension 23 projecting beyond the swashplate 3 facing the cylinder drum 6, via which the cylinder drum 6 is connected in a rotationally fixed manner to the drive shaft 5 by means of a splined connection 24.
  • the remaining bore portion is formed with a conical shape. It tapers from its largest diameter section near the first bore section to its smallest section
  • the defined by the drive shaft 5 and this conical bore portion annular space is designated by the reference numeral 25.
  • the cylinder drum 6 has generally axially extending, stepped cylinder bores 26 which are arranged uniformly on a coaxial to the drive shaft axis pitch circle are on the cylinder drum end face 22 directly and on the control body 4 facing Zylindertrommel- bearing surface through mouth channels 27 on the same pitch circle as the control slots open. In the on the cylinder drum end face 22 directly opening
  • the cylinder bores 26 including the liners 28 are referred to herein as cylinders.
  • pistons 29 are provided at their swash plate 3 facing the ends with ball heads 30 which are mounted in sliding blocks 31 and are hydrostatically mounted on this attached to the swash plate 5 annular sliding disk 32.
  • the in the housing interior of the recorded therein components 3 to 6, etc., not taken up space serves as a leak chamber 37, which in the operation of the axial piston machine through all the gaps, such as between the cylinders 26, 28 and the pistons 29, the control body 4 and the Zylindertroiranel 6, the swash plate 3 and the sliding disk 32 and the bearing shells 8 etc., leaking leakage fluid receives.
  • control slots 15 and the pressure and suction channels 16D and 16S done. It runs during the compression stroke of each piston 29 pressure oil from the respective cylinder 26, 28 via the axial passage 34 and the through hole 33 in the associated shoe 31 in the pressure pocket and builds a pressure field between the sliding disk 32 and the respective shoe 31, which as hydrostatic Camp serves for the latter. Furthermore, pressurized oil is fed via the connections 11 to the pressure pockets 10 in the bearing shells 8 for the hydrostatic support of the swashplate 3.
  • the swash plate 3 is formed in the form of a pivoting cradle which rests on two half-shell, not shown bearing elements and rolls on this by means of cage-guided, also in Fig. 2 and 3, not shown roller bearing elements.
  • the adjusting device 13 for adjusting the pivoting cradle 3 has an actuating piston 40, which is connected via a pivot pin 41 with the arm 14 in connection, which acts on the pivoting cradle 3.
  • the engagement of the weighing pin 41 in the adjusting piston 40 is effected by a geometrical combination of a circular arc with a straight line, which results from the combination of the directions of movement of the components involved, via a sliding block 42, which allows a two-dimensional movement.
  • the sliding block 42 is hollow cylindrical and mounted on the pivot pin 41, which is connected to the arm 14, plugged. It engages in a recess 43, which is formed in the adjusting piston 40.
  • the sliding block 42 must be in this recess 43 under a be stored certain game to allow a smooth adjustment of Schwenkwiege 3.
  • the pressure-side opening of the holes 44 is formed in the region of the high pressure, preferably on a cylinder 26, 28 of the axial piston facing surface 45 of the pivoting cradle 3. This ensures that the filling of the recess 43 via the holes 44 is reliable because Hydraulic fluid is always pressed into the bores 44 by the high pressure prevailing in the cylinders 26, 28.
  • the conveyed into the recess 43 hydraulic medium can return via leakage gaps in the leakage chamber 37 of the axial piston and is there again available.
  • By filling the recess 43 and the hydrostatic discharge of the sliding block 42 results in smaller gaps or a smaller clearance between the sliding block 42, the pivot pin 41 and the recess 43 of the adjusting 40.
  • the structure-borne sound is effectively damped, so that the operating noise level of Axial piston machine can be reduced.
  • the adjustment speed of the pivoting cradle 3 can be significantly increased because the friction partners no longer slide on solid contact, but on a lubricating film on each other. Also, the hysteresis properties can be improved, as well as the wear of the components.
  • Embodiment limited, but for example, be applied to other designs of axial piston machines. All features of the invention can be combined with one another as desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)

Abstract

Machine à piston axial comprenant un boîtier (1) dont l'espace intérieur accueille une plaque (3) de levage ainsi qu'un tambour (6) cylindrique logé de manière à pouvoir tourner, comportant des cylindres (26, 28) et des pistons (29) pouvant effectuer un mouvement de va-et-vient à l'intérieur de ceux-ci, dont les extrémités faisant saillie hors des cylindres (26, 28) s'appuient sur la plaque (3) de levage. Un dispositif (13) de réglage, qui vient en prise sur la plaque (3) de levage par le biais d'un tenon (41) de pesage et d'un bras (14) et qui comprend un piston (40) de réglage muni d'un creux (43), dans lequel vient en prise le tenon (41) de pesage muni d'un coulisseau (42), ainsi que des orifices (44), sert au positionnement de la plaque (3) de levage. Les orifices (44) sont formés dans la plaque (3) de levage, dans le bras (14) et dans le tenon (41) de pesage et débouchent dans le creux (43) du piston (40) de réglage.
EP07725378A 2006-06-02 2007-05-18 Machine a piston axial munie d'un tenon de pesage a suspension hydrostatique Withdrawn EP2024639A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006025988 2006-06-02
DE102006048411A DE102006048411A1 (de) 2006-06-02 2006-10-12 Axialkolbenmaschine mit hydrostatisch gelagertem Wiegenzapfen
PCT/EP2007/004470 WO2007140867A1 (fr) 2006-06-02 2007-05-18 Machine à piston axial muniE d'un tenon de pesage à suspension hydrostatique

Publications (1)

Publication Number Publication Date
EP2024639A1 true EP2024639A1 (fr) 2009-02-18

Family

ID=38474314

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07725378A Withdrawn EP2024639A1 (fr) 2006-06-02 2007-05-18 Machine a piston axial munie d'un tenon de pesage a suspension hydrostatique

Country Status (4)

Country Link
EP (1) EP2024639A1 (fr)
JP (1) JP2009539008A (fr)
DE (1) DE102006048411A1 (fr)
WO (1) WO2007140867A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012011479A1 (de) 2012-06-12 2013-12-12 Robert Bosch Gmbh Stellvorrichtung für hydraulische Kolbenmaschine und Verfahren zur Stellelementpositionserfassung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE940199C (de) * 1952-09-04 1956-03-15 Kloeckner Humboldt Deutz Ag Kolbenpumpe fuer OElfoerderung
GB1548095A (en) * 1976-05-10 1979-07-04 Bryce J M Apparatus and method for attaching a wire to a supporting post
DE3135605A1 (de) * 1981-09-09 1983-03-17 Linde Ag, 6200 Wiesbaden Einstellbare schraegscheiben-axialkolbenmaschine mit gleitgelagertem wiegenkoerper
DE3402634A1 (de) * 1983-01-27 1985-03-28 Linde Ag, 6200 Wiesbaden Einstellbare axialkolbenmaschine in schraegscheibenbauform
DE4423023C2 (de) * 1994-06-30 1998-07-09 Brueninghaus Hydromatik Gmbh Axialkolbenmaschine mit einem Kühlkreislauf für die Zylinder und Kolben
DE19727071C2 (de) * 1997-06-25 2001-07-19 Liebherr Machines Bulle S A Axialkolbenmaschine
JP2003003951A (ja) * 2001-06-19 2003-01-08 Hitachi Constr Mach Co Ltd アキシャル式斜板型ピストンポンプ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007140867A1 *

Also Published As

Publication number Publication date
JP2009539008A (ja) 2009-11-12
WO2007140867A1 (fr) 2007-12-13
DE102006048411A1 (de) 2007-12-06

Similar Documents

Publication Publication Date Title
EP2024638A1 (fr) Machine à piston axial avec appui hydrostatique du serre-flan
DE102009006909B4 (de) Axialkolbenmaschine mit reduzierter Stelldruckpulsation
DE19949169C2 (de) Verstellvorrichtung
EP2999885B1 (fr) Machine à piston axial du type à plateau en biais
EP2092192B1 (fr) Machine à piston axial hydrostatique
DE19808095B4 (de) Axialkolbenmaschine
EP0808421B1 (fr) Pompe hydrostatique ajustable
DE102012013436A1 (de) Hydraulische Kolbenmaschine und hydraulische Maschine
WO2006005399A1 (fr) Machine a pistons axiaux pourvue d'une couche resistant a l'usure
DE19645580C1 (de) Axialkolbenmaschine mit Dämpfungselement für die Schräg- oder Taumelscheibe
DE4424670A1 (de) Hydraulische Kolbenmaschine
EP1427914B1 (fr) Machine hydrostatique chemises de cylindres compenses
WO2007140867A1 (fr) Machine à piston axial muniE d'un tenon de pesage à suspension hydrostatique
DE102015223037A1 (de) Vibrationsantrieb mit hydraulischer Pulserzeugungsvorrichtung
WO2015150043A1 (fr) Machine à plateau incliné sous la forme d'une pompe à pistons axiaux et/ou d'un moteur à pistons axiaux
DE102018214481A1 (de) Hydrostatische Verdrängermaschine
DE968651C (de) Schiefscheibentriebwerk
EP1700034B1 (fr) Machine a pistons axiaux pour realiser un acheminement independant dans plusieurs circuits hydrauliques
WO2008074499A1 (fr) Piston creux pour une machine à pistons axiaux
DE102018132718B4 (de) Kurbeltrieb für eine Hubkolbenmaschine
EP1041279B1 (fr) Plaque de valves pour une machine axiale à piston
DE102018205884A1 (de) Axialkolbenmaschine mit Druckentlastung in den Durchtriebsraum
WO2007140946A1 (fr) Machine hydrostatique avec amortissement par cales
DE102013008681A1 (de) Axialkolbenpumpe in Schrägscheibenbauart
DE10157248A1 (de) Hydrostatische Maschine mit kompensierten Laufbuchsen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080117

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20091218