EP1003975B1 - Hydraulic unit with fastening device for additional aggregate units - Google Patents

Hydraulic unit with fastening device for additional aggregate units 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
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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)
French (fr)
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EP1003975A1 (en
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
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Publication date
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Priority to SI9830210T priority Critical patent/SI1003975T1/en
Publication of EP1003975A1 publication Critical patent/EP1003975A1/en
Application granted granted Critical
Publication of EP1003975B1 publication Critical patent/EP1003975B1/en
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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.

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

Abstract

The invention relates to a hydraulic unit comprising a rotor and a stator forming a housing. The hydraulic unit has a bearing provided for between the housing and the rotor, which bearing absorbs axial and radial forces. The rotor is configured as a flanged shaft with a shaft section and a flange section for attaching additional aggregate units to the hydraulic unit. The diameter of the flange section is greater than that of the housing. According to the invention a backing ring can be removably connected to the flanged shaft and rests with at least one inner shoulder on at least one outer shoulder on the housing, with formation of a sliding area. The invention also relates to a backing ring configured accordingly.

Description

Die Erfindung betrifft eine Hydraulikeinheit gemäß Oberbegriff von Anspruch 1 sowie eine Vorrichtung zur Befestigung einer Hydraulikeinheit mit einem Zusatzaggregat gemäß Oberbegriff von Anspruch 14 (vgl. z.B. EP-A-0 305 785).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).

Hydraulikeinheiten, insbesondere Hydromotoren bekannter Bauart zum Antrieb für Zusatzaggregate, wie z.B. Greifer, Bagger und andere Einrichtungen, sind bekannt. Gemäß prinzipiellem Aufbau weisen diese Hydraulikeinheiten ein als Stator ausgebildetes Gehäuse und einen als Flanschwelle ausgebildeten Rotor auf. Zwischen dem Gehäuse und einem Wellenabschnitt des Rotors sind Verdrängungselemente, welche bei Beaufschlagung mit einem Hydraulikfluid unter Druck den Rotor in Drehbewegung versetzen, und entsprechende axiale und radiale Belastungen aufnehmende Lagerungen vorgesehen. An dem Wellenabschnitt des Rotors ist einstückig ein Flanschabschnitt ausgebildet, dessen Durchmesser größer ist als der Durchmesser des Gehäuses und auf dem sich das Gehäuse bei Rotation des Rotors gleitend abstützt. Das heißt der Rotor mit dem Wellenabschnitt und dem Flanschabschnitt ist als Flanschwelle ausgebildet. In dem Bereich des Flanschabschnittes, welcher über den Außenumfang des Gehäuses hinausragt, sind umfangsmäßig Durchgangslöcher ausgebildet, durch welche Befestiger zum entsprechenden Befestigen von Zusatzaggregaten vorgesehen sind. Aufgrund des relativ großen Durchmessers des Flanschabschnittes der Flanschwelle sind die axialen Belastungen, welchen die Hydraulikeinheit im Einsatz ausgesetzt ist, beschränkt. Hydraulic units, in particular hydraulic motors of known type for driving for additional units, e.g. Grabs, excavators and other equipment, are known. According to the basic structure, 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. 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.

Bei den bekannten Hydraulikeinheiten ist der Wellenabschnitt der Flanschwelle durch jeweils ein an dem Gehäuse zugewandten Ende und dem Flanschabschnitt zugewandten Ende angeordnetes Schrägrollenlager gelagert. Da unter den harten Einsatzbedingungen auch zum Teil erhebliche radiale Belastungen. z.B. durch Anschlagen des Hydraulikmotors an bestimmten Hindernissen auftreten können und da die Zusatzaggregate, welche an der Hydraulikeinheit befestigt werden, eine erhebliche axiale Gewichtskraft auf die Hydraulikeinheit ausüben, müssen die genannten Lager relativ groß dimensioniert werden, was zu einer Vergrößerung des Antriebsaggregates führt. Darüber hinaus ist es erforderlich, für andere Zusatzaggregate mit beispielsweise größeren Massen, welche demzufolge eine höhere Zugkraftbelastung für die Hydraulikeinheit bewirken, auch eine andere Hydraulikeinheit einzusetzen, welche in der Lage ist, diese höheren axialen Belastungen durch ihre entsprechend groß dimensionierten Lager aufzunehmen.In the known hydraulic units, 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. There under the harsh operating conditions sometimes also considerable radial loads. e.g. by hitting the hydraulic motor on certain obstacles can occur and since the additional units, which on the hydraulic unit be attached, a significant axial weight on the Exercise hydraulic unit, the bearings mentioned must be relatively large become, which leads to an enlargement of the drive unit. In addition, 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.

Es ist daher das Ziel der vorliegenden Erfindung, eine Hydraulikeinheit zu schaffen, an welche eine größere axiale Last ankoppelbar ist und welche größeren radialen Belastungen standhält, sowie eine Vorrichtung zum Befestigen einer Hydraulikeinheit mit einer Arbeitseinrichtung zu schaffen, mittels welcher größere axiale und radiale Belastungen aufnehmbar sind, ohne daß die Hydraulikeinheit insgesamt ausgewechselt werden muß.It is therefore the object of the present invention to provide a hydraulic unit create to which a larger axial load can be coupled and which withstands greater radial loads, as well as a device for fastening to create a hydraulic unit with a working device, by means of which larger axial and radial loads can be absorbed without the hydraulic unit as a whole must be replaced.

Dieses Ziel wird durch eine Hydraulikeinheit mit den Merkmalen gemäß Anspruch 1 und durch eine Vorrichtung zur Befestigung einer Hydraulikeinheit mit einem Zusatzaggregat mit den Merkmalen gemäß Anspruch 14 erreicht. Zweckmäßige Weiterbildungen sind in den jeweiligen abhängigen Ansprüchen definiert.This goal is achieved by a hydraulic unit with the features according to Claim 1 and by a device for attaching a hydraulic unit with an additional unit with the features according to claim 14 reached. Appropriate further training are in the respective dependent Defined claims.

Die Hydraulikeinheit gemäß der Erfindung weist einen Rotor, einen Stator, welches das Gehäuse bildet, und Verdrängungselemente auf, welche zwischen Rotor und Gehäuse angeordnet sind und welchen ein entsprechend unter Druck stehendes Hydraulikfluid zugeführt wird, um den Rotor der Hydraulikeinheit in Rotation zu versetzen. Zwischen Rotor und Gehäuse befindet sich eine axiale und radiale Kräfte aufnehmende Lagerung. Der Rotor ist mit einem Wellenabschnitt und einem Flanschabschnitt als Flanschwelle ausgebildet, welche zum Befestigen von Zusatzaggregaten dient. Der Druchmesser des Flanschabschnittes ist größer als der Gehäusedurchmesser, so daß der über den Außenumfang des Gehäuses hinausragende Flanschabschnitt einen Bereich bildet, durch welchen Befestiger hindurchführbar sind, welche dem Befestigen eines Zusatzaggregates an der Hydraulikeinheit dienen.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. Located between the rotor and housing 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.

Erfindungsgemäß ist ein Tragring mit der Flanschwelle lösbar verbindbar, welcher sich mit einer Innenschulter auf einer Außenschulter am Gehäuse unter Bildung eines Gleitbereiches abstützt. Dieser Tragring ist mittels Befestigern bei angeflanschtem Zusatzaggregat mit dem Flanschabschnitt der Flanschwelle und dem Zusatzaggregat verbunden. Das heißt der Tragring rotiert gemeinsam mit dem Rotor.According to the invention, 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.

Dadurch, daß das Gehäuse eine Außenschulter aufweist und der Tragring eine Innenschulter aufweist und beide Schultern zusammenwirken, wird die axiale Belastung durch das Zusatzaggregat nicht nur von dem Flanschabschnitt des Rotors, sondern auch von dem Gehäuse selbst aufgenommen. Die bei Rotation des Tragringes gemeinsam mit dem Rotor aufeinandergleitenden Flächen bilden somit einen Gleitbereich, welcher der Aufnahme von axialen Belastungen sowie auch radialen Belastungen dient.In that 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.

Ein wesentlicher Vorteil eines derartigen Tragringes besteht darin, daß bei einer erfindungsgemäßen Hydraulikeinheit die axialen Belastungen aufgrund der Kraftaufteilung in den Flanschabschnitt der Flanschwelle und in das Gehäuse erhöht werden können. Des weiteren ist es durch die Innenschulter am Tragring sowie die Außenschulter am Gehäuse möglich, auf das am flanschseitigen Ende des Wellenabschnittes der Flanschwelle angeordneten Schrägrollenlagers gänzlich zu verzichten. Dies führt zu einer weiteren Vereinfachung des Aufbaus derartiger neuer Hydraulikeinheiten.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.

Vorzugsweise ist der Gleitbereich mit einem Lagerspiel und vorzugsweise als Gleitlager ausgebildet. Dabei kann der Gleitbereich unmittelbar auf den Bereich der Innenschulter des Tragringes und der Außenschulter des Gehäuses, welche im Betriebszustand aufeinander gleiten, beschränkt sein oder kann auch über die sich im wesentlichen in axialer Richtung des Hydraulikaggregates erstreckende Innenfläche des Tragringes erstrecken, welche im Betrieb an einem Teilstück des Außenumfanges des Gehäuses umläuft.Preferably, 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.

Gemäß einem weiteren Ausführungsbeispiel sind die Innenschulter und die Außenschulter zueinander geneigt. Das bedeutet, daß diese Innenschulter sowohl zur Aufnahme von axialen Belastungen als auch zur Aufnahme von radialen Belastungen geeignet ist. Unter "zueinander geneigt" soll dabei verstanden werden, daß die die Innenschulter und die Außenschulter bildende Fläche in einer Ebene liegt, welche verschieden von einer radial bezüglich der Längsachse der Flanschwelle verlaufenden Richtung ist. Gemäß einem weiteren bevorzugten Ausführungsbeispiel läuft der Tragring mit zumindest einer Innenfläche an einer Außenfläche des Gehäuses gleitend um. Gemäß diesem Ausführungsbeispiel stützt sich beim Umlaufen des Rotors mit montiertem Tragring zumindest ein Teil der Innenoberfläche, welche dem Außenumfang des Gehäuses zugewandt ist, gleitend um das Gehäuse ab. Außerdem ist es gemäß einem weiteren bevorzugten Ausführungsbeispiel möglich, daß zwischen der Innenfläche und der Außenfläche ein O-Ring angeordnet ist. According to a further embodiment, 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. Under "inclined towards each other" should be understood that 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. According to one another preferred embodiment, 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.

Gemäß noch einem weiteren Ausführungsbeispiel weist der Flanschabschnitt der Flanschwelle an seiner dem Gehäuse zugewandten Seite eine Ringstufe auf, auf welcher sich das Gehäuse mit einer dazu im wesentlichen formkongruenten Stufe gleitend abstützt. Diese zusätzliche Ringstufe im Bereich des Flanschabschnittes der Flanschwelle dient dazu, radiale Belastungen auf die mit einem Zusatzaggregat verbundene Hydraulikeinheit, welche z.B. durch seitliches Anschlagen an Hindernissen, Wänden etc. auftreten können, aufzunehmen. Aus Gründen der Dichtigkeit der Hydraulikeinheit kann vorzugsweise im Bereich der Stufe des Flanschabschnittes ein als Dichtung wirkender O-Ring vorgesehen sein. Ein derartiger O-Ring verhindert, daß Hydraulikfluid, mit welchem die Hydraulikeinheit angetrieben wird, aus der Schnittstelle, d.h. dem Gleitbereich des Gehäuses an dem Flanschabschnitt austritt.According to yet another exemplary embodiment, 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. For reasons of the tightness of the hydraulic unit can preferably in the area of the step of the flange section, 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.

Gemäß einem weiteren Ausführungsbeispiel ist der Außendurchmesser des Tragringes im wesentlichen gleich dem Außendurchmesser des Flanschabschnittes der Flanschwelle, so daß die Außenfläche des Tragringes im wesentlichen bündig mit der Außenfläche des Flanschabschnittes ist.According to a further exemplary embodiment, 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.

Vorzugsweise ist der gesamte Tragring aus einem Gleitlagermaterial hergestellt, welches vorzugsweise auch selbstschmierend sein kann. Ein derartiges Gleitlagermaterial weist zum einen die erforderliche Festigkeit auf, um den Tragring über den Flanschabschnitt der Flanschwelle mit dem Zusatzaggregat zuverlässig und sicher verbinden zu können, und weist darüber hinaus die erforderlichen Schmiereigenschaften auf, um die erforderlichen Gleiteigenschaften zwischen Gehäuse und Rotor realisieren zu können.The entire support ring is preferably made from a plain bearing material, which can preferably also be self-lubricating. Such a thing 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.

Gemäß einem weiteren Ausführungsbeispiel ist eine zusätzliche Schmierstoffleitung vorgesehen, die vorzugsweise aus dem Inneren durch das Gehäuse dem unmittelbaren Gleitbereich zu dessen Schmierstoffversorgung zugeführt wird. Im Gleitbereich kann entweder ein zu schmierendes separates Gleitlager vorgesehen sein. oder es kann gemäß dem oben aufgeführten Ausführungsbeispiel der Tragring vollständig aus Gleitmaterial bestehen.According to a further exemplary embodiment, there is an additional lubricant line provided, preferably from the inside through the housing fed to the immediate sliding area for its lubricant supply becomes. In 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.

Vorzugsweise ist in der Schmierstoffleitung ein Rückschlagventil angeordnet.
Ein derartiges Rückschlagventil verhindert, daß bei während des Betriebes möglicherweise auftretenden Druckstößen die unmittelbare Hydraulikeinheit mit den Verdrängungselementen und der Lagerung beschädigt werden.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.

Gemäß noch einem weiteren Ausführungsbeispiel weist die Lagerung des Wellenabschnittes lediglich an seinem in das Gehäuse ragenden Endbereich ein axiale und radiale Belastungen aufnehmendes Lager auf. Dies ist vor allen Dingen dann möglich, wenn der Tragring eine ausreichend große Innenschulter aufweist, welche mit einer ausreichend groß dimensionierten Außenschulter des Gehäuses zusammenwirkt, und wenn darüber hinaus der Flanschabschnitt der Flanschwelle eine Ringstufe aufweist. Dadurch kann sowohl der Tragring als auch der Flanschabschnitt der Flanschwelle selbst erhöhte radiale und axiale Belastungen aufnehmen, so daß auf das dem Flanschabschnitt zugewandte Lager des Wellenabschnittes der Flanschwelle verzichtet werden kann.According to yet another embodiment, the storage of the Shaft section only at its end region projecting into the housing an axial and radial load bearing. This is before all things possible if 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.

Gemäß einem weiteren Aspekt der Erfindung weist die Vorrichtung, welche der Befestigung einer Hydraulikeinheit mit einem Zusatzaggregat dient, einen Tragring auf, welcher mit einer den Rotor der Hydraulikeinheit bildenden Flanschwelle lösbar befestigbar ist und eine Innenschulter umfaßt, wobei die Innenschulter unter Bildung eines Gleitbereiches auf einer Außenschulter des Gehäuses abgestützt ist. Die Hydraulikeinheit ist insbesondere ein Hydromotor, und das Zusatzaggregat ist insbesondere ein Greifer.According to a further aspect of the invention, 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.

Ein wesentlicher Vorteil dieses erfindungsgemäßen Tragringes liegt darin, daß sowohl erhöhte axiale als auch radiale Belastungen nicht nur in den Flanschabschnitt der Flanschwelle, sondern darüber hinaus auch in das Gehäuse einleitbar sind. Durch diese Aufteilung der Kräfte kann bei einer gegebenen Hydraulikeinheit deren ankoppelbare axiale Belastung und deren im Betrieb aufnehmbare radiale Belastung erhöht werden, ohne daß die Hydraulikeinheit selbst bei diesen erhöhten Belastungen auszutauschen ist. Vorzugsweise sind die Innenschulter des Tragringes und die Außenschulter zueinander geneigt, wobei der Neigungswinkel zu einer im wesentlichen radial zur Längsachse des Wellenabschnittes der Flanschwelle sich erstreckenden Ebene für die Innenschulter und die Außenschulter im wesentlichen gleich ist. Durch diese geneigte Anordnung der Innenschulter und der Außenschulter können sowohl axiale als auch radiale Belastungen über den Tragring in das Gehäuse der Hydraulikeinheit eingeleitet werden.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. By dividing the forces at one given hydraulic unit, 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. Preferably, 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.

Gemäß einem weiteren Ausführungsbeispiel besteht der Tragring im wesentlichen vollständig aus einem Gleitlagermaterial, welches vorzugsweise selbstschmierend ist. In dem Falle, in welchem die Festigkeit des Gleitlagermaterials nicht ausreichend ist bzw. nicht selbstschmierend ist, kann der unmittelbare Gleitbereich zwischen Tragring und Gehäuse durch Zufuhr von Schmierstoff geschmiert werden.According to a further embodiment, the support ring consists essentially made entirely of a plain bearing material, which is preferably self-lubricating is. In the case where the strength of the plain bearing material is not sufficient or is not self-lubricating, the immediate one Sliding area between support ring and housing by feeding Lubricant to be lubricated.

Gemäß einem weiteren Ausführungsbeispiel weist der Tragring zumindest in Abschnitten des Gleitbereiches Gleitlagermaterial auf. Das bedeutet, daß es nicht zwingend erforderlich ist, Lagermaterial an sämtlichen Flächen des Gleitbereiches vorzusehen.According to a further exemplary embodiment, 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.

Gemäß einem weiteren Ausführungsbeispiel der Erfindung ist der Tragring zumindest zweiteilig ausgebildet. Dies ist vor allen Dingen dann vorteilhaft, wenn beispielsweise mehrere Innenschultern und mehrere Außenschultern an dem Tragring bzw. an dem Gehäuse vorzusehen sind, welche jeweils zusammenwirken. According to a further embodiment of the invention, 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.

Weitere Vorteile, Merkmale und Anwendungsmöglichkeiten der vorliegenden Erfindung werden nun anhand von Ausführungsbeispielen unter Bezugnahme auf die beigefügten Zeichnungen detailliert erläutert.Further advantages, features and possible uses of the present Invention will now be described by means of exemplary embodiments explained in detail on the accompanying drawings.

Es zeigen:

Fig. 1
eine Hydraulikeinheit gemäß Stand der Technik;
Fig. 2
den Bereich einer erfindungsgemäßen Hydraulikeinheit, an welchem ein erfindungsgemäßer Tragring angreift;
Fig. 3
ein weiteres Ausführungsbeispiel einer Hydraulikeinheit gemäß der Erfindung;
Fig. 4
ein weiteres Ausführungsbeispiel der Erfindung, bei welchem zwischen Außenschulter des Gehäuss und Innenschulter des Tragringes ein Gleitlager vorgesehen ist;
Fig. 5
ein weiteres Ausführungsbeispiel der Erfindung, bei welchem dem Gleitbereich Schmierstoff über eine Ölversorgungsleitung zugeführt wird;
Fig. 6
einen Querschnitt eines erfindungsgemäßen Tragringes.
Show it:
Fig. 1
a hydraulic unit according to the prior art;
Fig. 2
the area of a hydraulic unit according to the invention, on which a support ring according to the invention acts;
Fig. 3
a further embodiment of a hydraulic unit according to the invention;
Fig. 4
a further embodiment of the invention, in which a plain bearing is provided between the outer shoulder of the housing and the inner shoulder of the support ring;
Fig. 5
a further embodiment of the invention, in which lubricant is supplied to the sliding area via an oil supply line;
Fig. 6
a cross section of a support ring according to the invention.

In Fig. 1 ist eine Hydraulikeinheit gemäß dem Stand der Technik dargestellt. Die bekannte Hydraulikeinheit 1 weist einen Rotor 2 und ein Gehäue 3 auf. Zwischen dem Rotor 2 und dem Gehäuse 3 sind Verdrängungselemente 4 vorgesehen, welche mit einem unter einem entsprechenden Druck stehenden Hydraulikfluid beaufschlagt werden, wodurch über einen Zahneingriff der Rotor 2 der Hydraulikeinheit 1 in Rotation versetzt wird. Der Rotor 2 weist einen Wellenabschnitt 6 und einen Flanschabschnitt 7 auf. Der Wellenabschnitt 6 ist an seinem dem Gehäuse zugewandten Ende mittels eines Schrägrollenlagers und an seinem dem Flanschabschnitt zugewandten Ende mittels eines Schrägrollenlagers 21 gegenüber dem Gehäuse 3 abgestützt. Am gegenüber dem Flanschabschnitt des Rotors der Hydraulikeinheit gegenüberliegenden Ende weist die Hydraulikeinheit eine Lasche 20 mit einem Transport- bzw. Befestigungsauge auf. Dieses Auge dient beispielsweise dazu, die Hydraulikeinheit mit einem entsprechend angekoppelten Zusatzaggregat in eine hängende Position zu bringen.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. At opposite the flange section of the rotor of the hydraulic unit 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.

Dies ist beispielsweise dann der Fall, wenn die Hydraulikeinheit 1 beispielsweise mit einem Greifer gekoppelt wird. Ein solches Zusatzaggregat wird mittels Schrauben mit dem Flanschabschnitt 7 des Rotors 2 verbunden. Diese Schrauben durchgreifen den Außenumfangsbereich des Flanschabschnittes, welcher über den Außenumfang des Gehäuses hervorragt, durch entsprechend vorgesehene Durchgangsöffnungen und sind mit dem Zusatzaggregat verschraubbar.This is the case, for example, when the hydraulic unit 1, for example is coupled with a gripper. Such an additional unit is connected to the flange section 7 of the rotor 2 by means of screws. These screws pass through the outer peripheral area of the flange section, which protrudes over the outer circumference of the housing by accordingly provided through openings and are with the additional unit screwed.

Bei einer derartigen bekannten Hydraulikeinheit wird somit die gesamte axiale Belastung infolge beispielsweise des Gewichtes des Zusatzaggregates über den äußeren Bereich des Flanschabschnittes 7 in den Rotor 2 eingeleitet. Um diese axiale Belastung an das Gehäuse zu übertragen, müssen daher die Lager 5 und insbesondere das Lager 21 kräftig dimensioniert sein und müssen so ausgebildet sein, daß sowohl axiale als auch radiale Belastungen aufgenommen werden können. Über die unmittelbare Verbindung zwischen Flanschabschnitt 7 des Rotors 2 und dem Zusatzaggregat sind lediglich axiale Kräfte aufnehmbar und weiterleitbar. Im Einsatz treten dagegen auch unter Umständen sehr große radiale Belastungen auf, wenn beispielsweise das mit dem Zusatzaggregat verbundene Hydraulikaggregat durch seitliches Anschlagen an einem Hindernis im wesentlichen radial wirkende Schläge bzw. Stöße erfährt.In such a known hydraulic unit, the entire axial load due to, for example, the weight of the additional unit introduced into the rotor 2 via the outer region of the flange section 7. To transmit this axial load to the housing, therefore the bearing 5 and in particular the bearing 21 must be dimensioned strongly and must be designed so that both axial and radial loads can be included. Via the direct connection between flange section 7 of the rotor 2 and the additional unit only axial forces can be absorbed and transmitted. Step into action on the other hand, even under very large radial loads, if for example the hydraulic unit connected to the additional unit by striking the side of an obstacle essentially radially experiencing impact or shock.

In Fig. 2 ist ein erstes Ausführungsbeispiel gemäß der Erfindung dargestellt. Aus Gründen der Einfachheit ist der Teil der Hydraulikeinheit 1, in welchem die Verdrängungselemente 4 angeordnet sind, weggeschnitten. Das Gehäuse 3 ist gegenüber dem Rotor 2 im Bereich des Wellenabschnittes 6 mittels eines Schrägrollenlagers 21 abgestützt. Der Flanschabschnitt 7 des Rotors 2 weist einen Durchmesser auf, welcher größer ist als der Außendurchmesser des Gehäuses 3. In dem den Außendurchmesser des Gehäuses 3 überragenden Teil des Flanschabschnittes 7 sind umfangsmäßig verteilt Durchgangsöffnungen 19 vorgesehen. Das Gehäuse 3 weist im Bereich des Flanschabschnittes 7 des Rotors 2 einen Bereich auf, welcher einen größeren Durchmesser aufweist als der restliche Bereich des Gehäuses. Dadurch besitzt das Gehäuse eine Außenschulter 9. Auf dem den Außendurchmesser des Gehäuses überragenden Teil des Flanschabschnittes 7 des Rotors 2 stützt sich ein Tragring 8 auf, welcher in seinem Außendurchmesser im wesentlichen bündig mit dem Außendurchmesser des Flanschabschnittes 7 ist. Der Tragring 8 weist umfangsmäßig verteilte Durchgangslöcher auf, welche mit den Durchgangslöchern 19 im äußeren Flanschabschnitt 7 fluchten. Im oberen Teil des Tragringes 8 ist eine schraubenkopfadäquate Ausnehmung, welche einen Schraubenkopf absenkend aufnimmt, wenn der Tragring 8 mit dem Flanschabschnitt 7 und dem daran anzubringenden Zusatzaggregat verbunden ist. Die in axialer Richtung sich erstreckende Höhe der Außenschulter 9 des Gehäuses 3 ist dabei so bemessen, daß sie im Zusammenwirken mit der Innenschulter 10 des Tragringes 8 zumindest ein Lagerspiel beläßt, so daß bei montiertem Tragring 8 dessen Innnenschulter 10 nicht auf die Innenschulter 9 gespannt wird, sondern die Innenschulter 10 und die Außenschulter 9 aufeinander gleiten können.2 shows a first exemplary embodiment in accordance with the invention. For the sake of simplicity, the part of the hydraulic unit 1 is in which the displacement elements 4 are arranged, cut away. 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. In which the outer diameter of the housing 3 protruding part of the flange section 7 are distributed circumferentially Through openings 19 are provided. 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. On the outside diameter 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. 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.

Darüber hinaus weist der Flanschabschnitt 7 des Rotors 2 eine Ringstufe 15 auf, welche mit einer im wesentlichen formkongruenten Stufe 16 des Gehäuses 3 zusammenwirkt, wobei im wesentlichen im gesamten Bereich des Gehäuses, welcher dem mit einer Ringstufe 15 versehenen Flanschabschnitt 7 zugewandt ist, die Stufenform des Ringabschnittes 7 der Stufenform des Gehäuses 3 entspricht. Der Tragring 8 ist aus Gleitlagermaterial hergestellt, so daß ein spezielles Gleitlager zwischen der Innenschulter 10 und der Außenschulter 9 nicht vorgesehen ist.In addition, 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.

In Fig. 3 ist ein weiteres Ausführungsbeispiel gemäß der Erfindung dargestellt, welches im wesentlichen dem Ausführungsbeispiel nach Fig. 2 entspricht. Der Unterschied zu dem Ausführungsbeispiel gemäß Fig. 2 besteht darin, daß der Tragring 8 keine Ausnehmung zum Absenken eines Kopfes einer als Befestiger dienenden Schraube aufweist. Der Schraubenkopf liegt bei montiertem Tragring 8 vielmehr satt auf dessen radialer Ringfläche auf.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 zeigt ein weiteres Ausführungsbeispiel gemäß der Erfindung. Der prinzipielle Aufbau des Tragringes 8 entspricht dem der Ausführungsbeispiele gemäß Fig. 2 und 3. Bei dem Ausführungsbeispiel gemäß Fig. 4 ist jedoch zwischen der Innenschulter 10 des Tragringes 8 und der Außenschulter 9 des Gehäuses 3 ein zusätzliches Gleitlager 11 vorgesehen. Dieses Gleitlager 11 kann selbstschmierend sein oder fremdgeschmiert. Die innere, axial verlaufende Oberfläche des Tragringes 8, welche sich an der Außenoberfläche des Gehäuses 3 gleitend abstützt, kann ebenfalls eine mit einem Gleitlagermaterial versehene Gleitfläche sein. Dabei ist es möglich, daß nur ausgewählte Bereiche der sich auf der Außenoberfläche des Gehäuses 3 abstützenden und umlaufenden Innenoberfläche 12 des Tragringes 8 mit einem Gleitlagermaterial versehen sind. Wenn der Tragring 8 dagegen vollständig aus einem Gleitlagermaterial ausgebildet ist, so ist es nicht erforderlich, einzelne Bereiche zusätzlich als Gleitlager auszubilden. Im Bereich dieser Gleitfläche zwischen Innenfläche des Tragringes 8 und Außenoberfläche 13 des Gehäuses 3 ist des weiteren ein O-Ring 14 vorgesehen. Ein derartiger O-Ring 14 ist vor allen Dingen dann sinnvoll, wenn das Gleitlager 11 fremdgeschmiert ist, so daß der O-Ring 14 verhindert, daß Schmierstoff von dem Gleitlager 11 zwischen dem Tragring 8 und dem Gehäue 3 austritt. 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. However, 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. If the support ring 8 against it is made entirely of a plain bearing material, it is not necessary to additionally design individual areas as plain bearings. 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, an O-ring 14 is also provided. 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.

Die dem Gehäuse 3 zugewandte Seite des Flanschabschnittes 7 weist entsprechend dem Ausführungsbeispiel nach Fig. 2 und Fig. 3 eine Ringstufe 15 auf. welche formkongruent zu der im Gehäuse ausgebildeten Stufe 16 ist, so daß das Gehäuse mit seiner dem Flanschabschnitt 7 zugewandten Seite auf dem Flanschabschnitt sich gleitend abstützt.The side of the flange section 7 facing the housing 3 accordingly the embodiment of FIGS. 2 and 3, a ring step 15 on. which is congruent in shape to the level 16 formed in the housing, so that the housing with its flange portion 7 facing side is slidably supported on the flange section.

Mittels des Tragringes 8 ist es beispielsweise auch möglich, daß ein als Hydraulikeinheit dienender Hydromotor unter Vorspannung montiert wird, so daß bei entsprechender Verspannung des Tragringes 8 eine Kompensation der auftretenden Spannkräfte erreichbar ist.By means of the support ring 8, it is also possible, for example, that 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.

In Fig. 5 ist ein weiteres Ausführungsbeispiel gemäß der Erfindung dargestellt. Bei diesem Ausführungsbeispiel ist zur Versorgung eines Gleitlagers, welches wiederum zwischen der Außenschulter 9 des Gehäuses 3 und der Innenschulter 10 des Tragringes 8 angeordnet ist, eine Ölversorgungsleitung 17 vorgesehen, so daß das Gleitlager 11 permanent mit Schmieröl versorgt wird. Diese Ölversorgungsleitung 17 ist vom Gehäuseinneren, in welchem Hydrauliköl vorhanden ist, in den Bereich des Gleitlagers 11 an der Außenschulter 9 geführt. Um zu verhindern, daß eventuell auftretende Druckspitzen in das Innere der Hydraulikeinheit zurückwirken, ist in der Ölversorgungsleitung 17 ein Rückschlagventil 18 angeordnet. Mit Hilfe der Ölversorgungsleitung 17 ist es möglich, eine mittels Vorspannung erzeugte Anpreßkraft zu kompensieren, so daß optimale Bedingungen für wirksame Schmierverhältnisse gegeben sind.5 shows a further exemplary embodiment according to the invention. In this embodiment, for supplying a plain bearing, which in turn between the outer shoulder 9 of the housing 3 and the Inner shoulder 10 of the support ring 8 is arranged, 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. To prevent any pressure peaks that may occur back into the interior of the hydraulic unit is in the oil supply line 17 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.

Um zu verhindern, daß bei einer Schmierölbeaufschlagung des Gleitlagers 11 unter Druck Öl zwischen dem Tragring 8 und der äußeren Oberfläche des Gehäuses 3 austritt, sind zusätzlich O-Ringe 14 zum Abdichten vorgesehen. To prevent the sliding bearing 11 from being exposed to lubricating oil under pressure oil between the support ring 8 and the outer surface of the Housing 3 emerges, additional O-rings 14 are provided for sealing.

Fig. 6 zeigt einen Querschnitt durch den erfindungsgemäßen Tragring, welcher den Ausführungsbeispielen gemäß Fig. 2, 4 und 5 entspricht. Der Tragring 8 weist eine nach innen gerichtete Schulter, die Innenschulter 10 auf. Diese Innenschulter 10 stützt sich auf der Außenschulter 9 des Gehäuses 3 ab bzw. auf einem zwischen der Innenschulter 10 und der Außenschulter 9 angeordneten Gleitlager, so daß höhere axiale Belastungen des Zusatzaggregates auf die Hydraulikeinheit 1 über dem Flanschabschnitt 7 in das Gehäuse 3 einleitbar sind. Die Innenoberfläche 12 des Tragringes 8 ist dabei so ausgebildet, daß sie sich im wesentlichen gleitend auf der Außenoberfläche 13 des Gehäuses 3 in dem Berührungsbereich abstützt. Vorzugsweise ist der Tragring 8 aus einem Gleitlagermaterial ausgebildet. Es ist jedoch auch möglich, daß entsprechend dem jeweiligen Anwendungsfall das Grundmaterial des Tragringes 8 ein Material hoher Festigkeit ist, und daß an den Gleitflächen zumindest teilweise Gleitlagermaterialien vorgesehen sind.6 shows a cross section through the support ring according to the invention, which corresponds to the exemplary embodiments according to FIGS. 2, 4 and 5. The 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. Preferably 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.

Je nach Dimensionierung der Außenschulter 9 des Gehäuses 3 und der Innenschulter 10 des Tragringes 8 können die axialen und - bei geneigten Schulterflächen - auch die radialen Belastungen, welche von der Hydraulikeinheit aufgenommen werden können, durch die erfindungsgemäße Vorrichtung beträchtlich erhöht werden.Depending on the dimensions of the outer shoulder 9 of the housing 3 and Inner shoulder 10 of the support ring 8 can be the axial and - at inclined Shoulder surfaces - including the radial loads from the hydraulic unit can be recorded by the device according to the invention be increased considerably.

Claims (19)

  1. Hydraulic unit (1) with a rotor (2) and with a stator forming a housing (3), in which hydraulic unit a mounting absorbing axial and radial forces is provided between the housing (3) and the rotor (2) and the rotor (2) having a shaft portion (6) and a flange portion (7) is designed as a flanged shaft (6, 7) for the fastening of additional assemblies, the flange portion (7) having a diameter which is larger than the housing diameter, characterized in that a carrying ring (8) is capable of being connected releasably to the flanged shaft (6, 7) and is supported with at least one inner shoulder (10) on at least one outer shoulder (9) on the housing (3) so as to form a sliding region.
  2. Hydraulic unit (1) according to Claim 1, characterized in that the sliding region produces bearing play.
  3. Hydraulic unit (1) according to Claim 1 or 2, characterized in that the sliding region is designed as a sliding bearing (11).
  4. Hydraulic unit (1) according to one of Claims 1 to 3, characterized in that the inner shoulder (10) and the outer shoulder (9) are inclined relative to one another.
  5. Hydraulic unit (1) according to one of Claims 1 to 4, characterized in that the carrying ring (8) rotates slideably with at least one inner face (12) on an outer face (13) of the housing (3).
  6. Hydraulic unit (1) according to Claim 5, characterized in that an 0-ring (14) is arranged between the inner face (12) and the outer face (13).
  7. Hydraulic unit (1) according to one of Claims 1 to 6, characterized in that the flange portion (7) of the flanged shaft (6, 7) has, on its side facing the housing (3), an annular step (15) for absorption of radial loads, on which the housing (3) is supported slideably with a step (16) essentially dimensionally congruent thereto.
  8. Hydraulic unit (1) according to one of Claims 1 to 7, characterized in that the outside diameter of the carrying ring (8) is essentially equal to the outside diameter of the flange portion (7) of the flanged shaft (6, 7).
  9. Hydraulic unit (1) according to one of Claims 1 to 8, characterized in that the carrying ring (8) consists of a sliding-bearing material.
  10. Hydraulic unit (1) according to one of Claims 1 to 9, characterized in that a lubricant line (17) leads to the lubricant supply of the sliding region.
  11. Hydraulic unit (1) according to Claim 10, characterized in that a non-return valve (18) is arranged in the lubricant line (17).
  12. Hydraulic unit (1) according to one of Claims 7 to 11, characterized in that the mounting of the shaft portion (6) has only at its end region projecting into the housing (3) a bearing (5) which absorbs axial and radial load.
  13. Hydraulic unit (1) according to Claim 12, characterized in that the bearing is an angular roller bearing.
  14. Device for fastening a hydraulic unit (1), in particular a hydraulic motor, having a housing (3) and a rotor (2) designed as a flanged shaft (6, 7), to an additional assembly, in particular a gripper, characterized in that the device is designed as a carrying ring (8) which is capable of being fastened releasably to the flanged shaft (6, 7) and which has an inner shoulder (10) supported on an outer shoulder (9) of the housing (3) so as to form a sliding region.
  15. Device according to Claim 14, characterized in that the inner shoulder (10) and the outer shoulder (9) are inclined relative to one another.
  16. Device according to Claim 14 or 15, characterized in that the carrying ring (8) consists of a sliding-bearing material.
  17. Device according to Claim 16, characterized in that the sliding-bearing material is self-lubricating.
  18. Device according to Claim 14 or 15, characterized in that the carrying ring (8) has sliding-bearing material at least in portions of the sliding region.
  19. Device according to one of Claims 14 to 18, characterized in that the carrying ring (8) is produced in at least two parts.
EP98946319A 1997-08-12 1998-08-12 Hydraulic unit with fastening device for additional aggregate units Expired - Lifetime EP1003975B1 (en)

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
DE19734900 1997-08-12
DE19734900A DE19734900C2 (en) 1997-08-12 1997-08-12 Hydraulic unit with fastening device for additional units
PCT/EP1998/005097 WO1999008000A1 (en) 1997-08-12 1998-08-12 Hydraulic unit with fastening device for additional aggregate units

Publications (2)

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

Family

ID=7838739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98946319A Expired - Lifetime EP1003975B1 (en) 1997-08-12 1998-08-12 Hydraulic unit with fastening device for additional aggregate units

Country Status (5)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005009540U1 (en) * 2005-06-17 2006-10-26 Kinshofer Greiftechnik Gmbh & Co. Kg Hydraulic torque motor used as a slewing gear for an excavator grab comprises a rotor supported axially and radially on a housing via sliding bearings and an engine connecting piece joined to the rotor
EP1882855A3 (en) * 2006-07-25 2008-04-30 Kinshofer GmbH Hydraulic motor
DE102008035088A1 (en) * 2008-07-28 2010-02-04 Av Hydraulikmotoren Gmbh Hydraulic aggregate i.e. hydraulic motor, has locking device whose locking unit acts together with locking recess in locking position and blocks rotor with respect to stator in mechanically form-fit, torque-proof and detachable manner

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3729049C1 (en) * 1987-08-31 1989-03-30 Kinshofer Greiftechnik Hydraulic motor
DE4200062A1 (en) * 1992-01-03 1993-07-08 Ervin Kratochvil Cycloidal speed reduction gear with toothed wheel engaging ring of pins - incorporates drive shaft fitted with eccentric bush which carries toothed wheel
DE4335678C2 (en) * 1993-10-20 2002-06-20 Thumm Heinz Oelhydraulik Rotary device for excavator grab

Also Published As

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

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