EP1003975B1 - Unite hydraulique a dispositif de fixation pour ensembles additionnels - Google Patents

Unite hydraulique a dispositif de fixation pour ensembles additionnels Download PDF

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Publication number
EP1003975B1
EP1003975B1 EP98946319A EP98946319A EP1003975B1 EP 1003975 B1 EP1003975 B1 EP 1003975B1 EP 98946319 A EP98946319 A EP 98946319A EP 98946319 A EP98946319 A EP 98946319A EP 1003975 B1 EP1003975 B1 EP 1003975B1
Authority
EP
European Patent Office
Prior art keywords
hydraulic unit
housing
sliding
rotor
bearing
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
EP98946319A
Other languages
German (de)
English (en)
Other versions
EP1003975A1 (fr
Inventor
Andreas Voulgaris
Christos Voulgaris
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.)
"ARCHIMEDES" VOULGARIS HYDRAULIKMOTORENBAU GMBH
Original Assignee
"Archimedes" Voulgaris Hydraulikmotorenbau 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 "Archimedes" Voulgaris Hydraulikmotorenbau GmbH filed Critical "Archimedes" Voulgaris Hydraulikmotorenbau GmbH
Priority to SI9830210T priority Critical patent/SI1003975T1/xx
Publication of EP1003975A1 publication Critical patent/EP1003975A1/fr
Application granted granted Critical
Publication of EP1003975B1 publication Critical patent/EP1003975B1/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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/02—Arrangements of bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions

Definitions

  • the invention relates to a hydraulic unit according to the preamble of claim 1 and a device for fastening a hydraulic unit with a Additional unit according to the preamble of claim 14 (see e.g. EP-A-0 305 785).
  • Hydraulic units in particular hydraulic motors of known type for driving for additional units, e.g. Grabs, excavators and other equipment, are known.
  • these hydraulic units have a housing designed as a stator and a housing designed as a flange shaft Rotor on. Between the housing and a shaft section of the rotor are displacement elements which, when acted upon by a hydraulic fluid pressurize the rotor to rotate, and corresponding Bearings bearing axial and radial loads are provided.
  • On a flange section is integrally formed on the shaft section of the rotor, whose diameter is larger than the diameter of the housing and on which the housing is slidably supported when the rotor rotates.
  • The is called the rotor with the shaft section and the flange section is as Flanged shaft designed.
  • the flange section In the area of the flange section, which Extending beyond the outer circumference of the housing are circumferential holes formed by which fasteners for appropriate fastening of additional units are provided. Because of the relatively large The diameter of the flange section of the flange shaft is the axial one The loads to which the hydraulic unit is exposed during use are limited.
  • the shaft section is the flange shaft by in each case one end facing the housing and the flange section the inclined roller bearing arranged at the end.
  • the bearings mentioned must be relatively large become, which leads to an enlargement of the drive unit.
  • it is necessary to use other accessories such as larger masses, which consequently have a higher tensile load cause the hydraulic unit to use another hydraulic unit, which is able to withstand these higher axial loads to take up their correspondingly large-sized bearings.
  • the hydraulic unit according to the invention has a rotor, a stator, which forms the housing, and displacement elements, which between Rotor and housing are arranged and which one accordingly below Pressurized hydraulic fluid is supplied to the rotor of the hydraulic unit to rotate.
  • a bearing that absorbs axial and radial forces.
  • the rotor is with a shaft section and a flange section as a flange shaft trained, which is used to attach additional units.
  • the diameter the flange section is larger than the housing diameter, so that the flange section protruding beyond the outer circumference of the housing forms an area through which fasteners can be passed, which serve to attach an additional unit to the hydraulic unit.
  • a support ring can be detachably connected to the flange shaft, which is with an inner shoulder on an outer shoulder on the housing supports to form a sliding area.
  • This support ring is by means of Fasten with the flange section of the additional unit Flanged shaft and the additional unit connected. That is the support ring rotates together with the rotor.
  • the housing has an outer shoulder and the support ring has an inner shoulder and both shoulders work together, the axial load by the additional unit not only from the flange section of the rotor, but also taken up by the housing itself. Those that slide together with the rotor when the support ring rotates Surfaces thus form a sliding area, which of the recording of axial loads as well as radial loads.
  • a major advantage of such a support ring is that a hydraulic unit according to the invention due to the axial loads the force distribution in the flange section of the flange shaft and in the Housing can be increased. Furthermore, it is through the inner shoulder on the support ring and the outer shoulder on the housing possible, on the arranged flange-side end of the shaft section of the flange shaft Completely dispense with the inclined roller bearing. This leads to another Simplification of the construction of such new hydraulic units.
  • the sliding area with a bearing clearance and preferably as Plain bearings trained.
  • the sliding area can directly on the Area of the inner shoulder of the support ring and the outer shoulder of the housing, which slide on each other in the operating state, be limited or can also be in the substantially axial direction of the hydraulic unit extend inner surface of the support ring, which in Operation revolves around a portion of the outer periphery of the housing.
  • the inner shoulder and the Outer shoulder inclined towards each other. That means this inner shoulder for the absorption of axial loads as well as for the absorption of radial loads is suitable.
  • the forming the inner shoulder and the outer shoulder Surface lies in a plane which is different from a radial one is the direction of the longitudinal axis of the flange shaft.
  • the support ring runs with at least slidably around an inner surface on an outer surface of the housing. According to this embodiment is supported when rotating the rotor Mounted support ring at least part of the inner surface, which the The outer circumference of the housing faces, sliding around the housing. It is also according to another preferred embodiment possible that an O-ring between the inner surface and the outer surface is arranged.
  • the flange section has the flange shaft on its side facing the housing an annular step on which the housing with an essentially congruent shape Sliding supports.
  • This additional ring step in the area of Flange section of the flange shaft is used to bear radial loads on the hydraulic unit connected to an additional unit, which e.g. by lateral impact on obstacles, walls, etc. may occur.
  • a seal acting O-ring can be provided. Such an O-ring prevents hydraulic fluid, with which the hydraulic unit is driven, from the interface, i.e. emerges from the sliding area of the housing at the flange section.
  • the outer diameter of the Support ring substantially equal to the outer diameter of the flange section the flange shaft, so that the outer surface of the support ring in is substantially flush with the outer surface of the flange portion.
  • the entire support ring is preferably made from a plain bearing material, which can preferably also be self-lubricating.
  • a plain bearing material has the necessary strength to the Support ring over the flange section of the flange shaft with the additional unit to be able to connect reliably and securely, and also has the required lubrication properties to the required sliding properties between the housing and the rotor.
  • an additional lubricant line provided, preferably from the inside through the housing fed to the immediate sliding area for its lubricant supply becomes.
  • the sliding area there can either be a separate sliding bearing to be lubricated be provided. or it can according to the embodiment listed above the support ring consist entirely of sliding material.
  • a check valve is preferably arranged in the lubricant line. Such a check valve prevents the immediate hydraulic unit with the displacement elements and the bearing from being damaged in the event of pressure surges which may occur during operation.
  • the storage of the Shaft section only at its end region projecting into the housing an axial and radial load bearing.
  • the support ring is sufficiently large Has inner shoulder, which is dimensioned with a sufficiently large
  • the outer shoulder of the housing interacts, and if the Flange section of the flange shaft has an annular step. This can both the support ring and the flange section of the flange shaft itself absorb increased radial and axial loads, so that the Flange section facing bearings of the shaft section of the flange shaft can be dispensed with.
  • the device which the attachment of a hydraulic unit with an additional unit, one Support ring, which forms with a rotor of the hydraulic unit Flange shaft is releasably attachable and includes an inner shoulder, the Inner shoulder with formation of a sliding area on an outer shoulder of the Housing is supported.
  • the hydraulic unit is in particular a hydraulic motor, and the additional unit is in particular a gripper.
  • a major advantage of this support ring according to the invention is that both increased axial and radial loads not only in the Flange section of the flange shaft, but also in that Housing can be initiated.
  • its connectable axial load and its radial load that can be absorbed during operation can be increased without the Hydraulic unit must be replaced even with these increased loads.
  • the inner shoulder of the support ring and the outer shoulder inclined to each other, the angle of inclination to a substantially extending radially to the longitudinal axis of the shaft section of the flange shaft Level for the inner shoulder and the outer shoulder essentially is equal to. This inclined arrangement of the inner shoulder and the Outer shoulder can withstand both axial and radial loads Support ring are introduced into the housing of the hydraulic unit.
  • the support ring consists essentially made entirely of a plain bearing material, which is preferably self-lubricating is.
  • a plain bearing material which is preferably self-lubricating is.
  • the support ring has at least in Sections of the sliding area on plain bearing material. That means it it is not absolutely necessary to stock materials on all surfaces of the Provide sliding area.
  • the support ring formed at least in two parts. This is especially advantageous if, for example, several inner shoulders and several outer shoulders the support ring or on the housing are to be provided, which each cooperate.
  • the known hydraulic unit 1 shows a hydraulic unit according to the prior art.
  • the known hydraulic unit 1 has a rotor 2 and a housing 3 on. There are displacement elements between the rotor 2 and the housing 3 4 provided, which with a corresponding pressure standing hydraulic fluid are applied, which means a tooth mesh the rotor 2 of the hydraulic unit 1 is set in rotation.
  • the Rotor 2 has a shaft section 6 and a flange section 7.
  • the shaft section 6 is by means of its end facing the housing a tapered roller bearing and on its facing the flange section End supported by a tapered roller bearing 21 against the housing 3.
  • the hydraulic unit has a tab 20 on the opposite end a transport or fastening eye. This eye serves, for example to the hydraulic unit with a correspondingly coupled Bring the additional unit into a hanging position.
  • the housing 3 is opposite rotor 2 in the area of shaft section 6 supported by an inclined roller bearing 21.
  • the flange section 7 of the Rotor 2 has a diameter which is larger than the outside diameter of the housing 3.
  • the housing 3 has in the area of Flange section 7 of the rotor 2 on an area which is a larger Diameter than the rest of the housing. Thereby the housing has an outer shoulder 9.
  • the housing projecting part of the flange portion 7 of the rotor 2 supports a support ring 8, which in its outer diameter essentially is flush with the outer diameter of the flange portion 7.
  • the Support ring 8 has circumferentially distributed through holes, which with the through holes 19 in the outer flange section 7 are aligned.
  • a screw head-adequate recess in the upper part of the support ring 8 is a screw head-adequate recess, which receives a screw head lowering when the support ring 8 with the flange section 7 and the additional unit to be attached to it connected is.
  • the height of the outer shoulder extending in the axial direction 9 of the housing 3 is dimensioned so that they interact with the inner shoulder 10 of the support ring 8 at least one bearing play leaves so that when the support ring 8 is mounted, its inner shoulder 10 does not open the inner shoulder 9 is tensioned, but the inner shoulder 10 and the Outer shoulder 9 can slide on each other.
  • the flange section 7 of the rotor 2 has an annular step 15 on which with an essentially congruent step 16 of the housing 3 interacts, essentially in the entire area of Housing which the flange section provided with a ring step 15 7 facing, the step shape of the ring portion 7 of the step shape of the Housing 3 corresponds.
  • the support ring 8 is made of plain bearing material, so that a special plain bearing between the inner shoulder 10 and the Outer shoulder 9 is not provided.
  • FIG. 3 shows a further exemplary embodiment according to the invention, which corresponds essentially to the embodiment of FIG. 2.
  • the difference to the exemplary embodiment according to FIG. 2 exists in that the support ring 8 has no recess for lowering a head has a screw serving as a fastener.
  • the screw head lies when the support ring 8 is mounted, it is rather full on its radial ring surface.
  • Fig. 4 shows a further embodiment according to the invention.
  • the basic structure of the support ring 8 corresponds to that of the embodiments 2 and 3.
  • an additional slide bearing 11 is provided in the embodiment shown in FIG. 4 between the inner shoulder 10 of the support ring 8 and the outer shoulder 9 the housing 3, an additional slide bearing 11 is provided.
  • This plain bearing 11 can be self-lubricating or externally lubricated.
  • the inner, axial extending surface of the support ring 8, which is on the outer surface of the housing 3 is slidably supported, one with a Be slide bearing material provided sliding surface. It is possible that only selected areas on the outer surface of the housing 3 supporting and circumferential inner surface 12 of the support ring 8 with are provided with a plain bearing material.
  • an O-ring 14 is also provided in the Area of this sliding surface between the inner surface of the support ring 8 and the outer surface 13 of the housing 3.
  • Such an O-ring 14 is particularly useful if that Slide bearing 11 is externally lubricated, so that the O-ring 14 prevents Lubricant from the plain bearing 11 between the support ring 8 and the Housing 3 emerges.
  • a as Hydraulic unit serving hydraulic motor is mounted under tension, so that with appropriate tensioning of the support ring 8 compensation for occurring clamping forces can be reached.
  • FIG. 5 shows a further exemplary embodiment according to the invention.
  • an oil supply line 17 provided so that the sliding bearing 11 is permanently supplied with lubricating oil becomes.
  • This oil supply line 17 is from the inside of the housing, in which Hydraulic oil is present in the area of the sliding bearing 11 on the outer shoulder 9 led.
  • a check valve 18 is arranged. With the help of Oil supply line 17, it is possible to generate a by means of bias Pressure to compensate, so that optimal conditions for effective Lubrication conditions are given.
  • the support ring 8 has an inward shoulder, the inner shoulder 10 on.
  • This inner shoulder 10 is supported on the outer shoulder 9 of the housing 3 from or on one between the inner shoulder 10 and the outer shoulder 9 arranged slide bearing, so that higher axial loads on the Additional unit on the hydraulic unit 1 over the flange section 7 in the housing 3 can be introduced.
  • the inner surface 12 of the support ring 8 is designed so that they are essentially sliding on the outer surface 13 of the housing 3 is supported in the contact area.
  • the support ring 8 is formed from a plain bearing material. It is however, it is also possible that, depending on the respective application Base material of the support ring 8 is a high strength material, and that at least partially slide bearing materials are provided on the sliding surfaces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Sliding-Contact Bearings (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)

Claims (19)

  1. Ensemble hydraulique (1) avec un rotor (2), un stator formant un boítier (3), dans lequel un logement qui reçoit des forces axiale et radiale est prévu entre le boítier (3) et le rotor (2) et dans lequel le rotor (2) est construit avec une section d'arbre (6) et une section de bride (7) comme faux arbre (6, 7) pour la fixation de groupes auxiliaires, la section de bride (7) ayant un diamètre supérieur au diamètre du boítier,
       caractérisé en ce qu'un anneau de retenue (8) peut être relié de manière amovible au faux arbre (6, 7) et repose, avec au moins un épaulement interne (10), sur au moins un épaulement externe (9) sur le boítier (3) en formant une zone de glissement.
  2. Ensemble hydraulique (1) selon la revendication 1, caractérisé en ce que la zone de glissement forme un jeu de palier.
  3. Ensemble hydraulique (1) selon la revendication 1 ou 2, caractérisé en ce que la zone de glissement est réalisée sous forme de palier à glissement (11).
  4. Ensemble hydraulique (1) selon l'une des revendications 1 à 3, caractérisé en ce que l'épaulement interne (10) et l'épaulement externe (9) sont inclinés l'un vers l'autre.
  5. Ensemble hydraulique (1) selon l'une des revendications 1 à 4, caractérisé en ce que l'anneau de retenue (8) tourne en glissant autour d'une surface extérieure (13) du boítier (3) avec au moins une surface intérieure (12).
  6. Ensemble hydraulique (1) selon la revendication 5, caractérisé en ce qu'un joint torique (14) est placé entre la surface intérieure (12) et la surface extérieure (13).
  7. Ensemble hydraulique (1) selon l'une des revendications 1 à 6, caractérisé en ce que la section de bride (7) du faux arbre (6, 7) comporte, sur son côté tourné vers le boítier (3), un redent d'anneau (15) pour l'absorption de charges radiales sur lequel s'appuie en glissant le boítier (3) avec un redent (16) ayant une forme essentiellement correspondante.
  8. Ensemble hydraulique (1) selon l'une des revendications 1 à 7, caractérisé en ce que le diamètre extérieur de l'anneau de retenue (8) est essentiellement égal au diamètre extérieur de la section de bride (7) du faux arbre (6, 7).
  9. Ensemble hydraulique (1) selon l'une des revendications 1 à 8, caractérisé en ce que l'anneau de retenue (8) est constitué d'une matière pour palier de glissement.
  10. Ensemble hydraulique (1) selon l'une des revendications 1 à 9, caractérisé en ce qu'une conduite de lubrification (17) conduit à l'alimentation en lubrifiant de la zone de glissement.
  11. Ensemble hydraulique (1) selon la revendication 10, caractérisé en ce qu'une vanne anti-retour (18) est disposée dans la conduite de lubrification (17).
  12. Ensemble hydraulique (1) selon l'une des revendications 7 à 11, caractérisé en ce que le logement de la section d'arbre (6) comporte un palier (5) absorbant la charge radiale et la charge axiale uniquement dans sa zone d'extrémité s'avançant dans le boítier (3).
  13. Ensemble hydraulique (1) selon la revendication 12, caractérisé en ce que le palier est un palier à rouleaux obliques.
  14. Dispositif pour la fixation d'un ensemble hydraulique (1) comportant un boítier (3) et un rotor (2) configuré comme faux arbre (6, 7), en particulier d'un hydromoteur avec un groupe auxiliaire, en particulier un grappin,
       caractérisé en ce que le dispositif réalisé sous forme d'anneau de retenue (8) qui est relié de manière amovible au faux arbre (6, 7) et qui comporte un épaulement interne (10) qui est appuyé sur un épaulement externe (9) du boítier (3) en formant une zone de glissement.
  15. Dispositif selon la revendication 14, caractérisé en ce que l'épaulement interne (10) et l'épaulement externe (9) sont inclinés l'un vers l'autre.
  16. Dispositif selon la revendication 14 ou 15, caractérisé en ce que l'anneau de retenue (8) est constitué d'une matière pour palier de glissement.
  17. Dispositif selon la revendication 16, caractérisé en ce que la matière pour palier de glissement est autolubrifiante.
  18. Dispositif selon la revendication 14 ou 15, caractérisé en ce que l'anneau de retenue (8) comporte une matière pour palier de glissement au moins dans les sections de la zone de glissement.
  19. Dispositif selon l'une des revendications 14 à 18, caractérisé en ce que l'anneau de retenue (8) est formé d'au moins deux parties.
EP98946319A 1997-08-12 1998-08-12 Unite hydraulique a dispositif de fixation pour ensembles additionnels Expired - Lifetime EP1003975B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9830210T SI1003975T1 (en) 1997-08-12 1998-08-12 Hydraulic unit with fastening device for additional aggregate units

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19734900A DE19734900C2 (de) 1997-08-12 1997-08-12 Hydraulikeinheit mit Befestigungsvorrichtung für Zusatzaggregate
DE19734900 1997-08-12
PCT/EP1998/005097 WO1999008000A1 (fr) 1997-08-12 1998-08-12 Unite hydraulique a dispositif de fixation pour ensembles additionnels

Publications (2)

Publication Number Publication Date
EP1003975A1 EP1003975A1 (fr) 2000-05-31
EP1003975B1 true EP1003975B1 (fr) 2002-05-08

Family

ID=7838739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98946319A Expired - Lifetime EP1003975B1 (fr) 1997-08-12 1998-08-12 Unite hydraulique a dispositif de fixation pour ensembles additionnels

Country Status (5)

Country Link
EP (1) EP1003975B1 (fr)
AT (1) ATE217393T1 (fr)
AU (1) AU9341498A (fr)
DE (2) DE19734900C2 (fr)
WO (1) WO1999008000A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005009540U1 (de) * 2005-06-17 2006-10-26 Kinshofer Greiftechnik Gmbh & Co. Kg Hydraulischer Drehmotor
EP1882855A3 (fr) * 2006-07-25 2008-04-30 Kinshofer GmbH moteur hydraulique
DE102008035088A1 (de) 2008-07-28 2010-02-04 Av Hydraulikmotoren Gmbh Hydraulikaggregat, insbesondere Hydraulikmotor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3729049C1 (de) * 1987-08-31 1989-03-30 Kinshofer Greiftechnik Hydromotor
DE4200062A1 (de) * 1992-01-03 1993-07-08 Ervin Kratochvil Getriebe, besonderes zykloidengetriebe fuer die direkte verbindung mit dem treibenden und getriebenen element
DE4335678C2 (de) * 1993-10-20 2002-06-20 Thumm Heinz Oelhydraulik Drehvorrichtung für Baggergreifer

Also Published As

Publication number Publication date
EP1003975A1 (fr) 2000-05-31
DE19734900C2 (de) 2001-03-08
DE59804071D1 (de) 2002-06-13
WO1999008000A1 (fr) 1999-02-18
AU9341498A (en) 1999-03-01
DE19734900A1 (de) 1999-02-25
ATE217393T1 (de) 2002-05-15

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