EP0080670B1 - Drehvorrichtung für hängende Lasten - Google Patents

Drehvorrichtung für hängende Lasten Download PDF

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Publication number
EP0080670B1
EP0080670B1 EP82110702A EP82110702A EP0080670B1 EP 0080670 B1 EP0080670 B1 EP 0080670B1 EP 82110702 A EP82110702 A EP 82110702A EP 82110702 A EP82110702 A EP 82110702A EP 0080670 B1 EP0080670 B1 EP 0080670B1
Authority
EP
European Patent Office
Prior art keywords
stator
threaded ring
rotor
drive mechanism
rotation device
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
Application number
EP82110702A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0080670A1 (de
Inventor
Gunther Neumann
Heinz Thumm
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.)
Heinz Thumm Oelhydraulische Antriebe GmbH
Original Assignee
Heinz Thumm Oelhydraulische Antriebe 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 Heinz Thumm Oelhydraulische Antriebe GmbH filed Critical Heinz Thumm Oelhydraulische Antriebe GmbH
Publication of EP0080670A1 publication Critical patent/EP0080670A1/de
Application granted granted Critical
Publication of EP0080670B1 publication Critical patent/EP0080670B1/de
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3677—Devices to connect tools to arms, booms or the like allowing movement, e.g. rotation or translation, of the tool around or along another axis as the movement implied by the boom or arms, e.g. for tilting buckets
    • E02F3/3681—Rotators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/005—Grab supports, e.g. articulations; Oscillation dampers; Orientation
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
    • E02F3/4135—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device with grabs mounted directly on a boom

Definitions

  • the invention relates to a rotating device for hanging loads, in particular for excavator or crane grabs or load magnets of the type specified in the preamble of claim 1.
  • a rotating device of this type is known (DE-A-2838428), in which two tapered roller bearings arranged at a distance from one another are provided for radial and axial mounting of the rotor in the stator. A total of four shoulders are required for the bearing support, for which a considerable construction effort and a corresponding space requirement is required. Either two or multi-part shafts or additional machine elements such as snap rings, nuts and screws are required to form the bearing shoulders.
  • the drive mechanism is arranged between the two bearings, so that it is only accessible for repair and maintenance purposes if the entire rotating device including the bearings is disassembled. This work can only be carried out by specialists who must be equipped with special tools.
  • the invention is based on the object to improve the known rotating device of the type mentioned in that it is easier to assemble, repair and maintain, yet is sufficiently robust and resistant and enables a compact design.
  • the invention is based on the idea that a compact and robust design is possible by using a four-point contact bearing, the running surfaces of which are formed directly in the stator and rotor material for the rolling bearing bodies and complement one another to form a closed annular space.
  • a bearing arrangement is known per se from FR-A-817265 from 1936 for a rotating device which is not intended for hanging loads and has no internal drive mechanism.
  • the rotating device according to the invention can be disassembled in a few steps with the aid of a simple assembly tool will. without the pivot bearing, which is important for the reliable function, having to be exposed as such.
  • the axial boundary surfaces of the drive elements are designed to be variable over the circumferential area.
  • inlets and outlets for the hydraulic fluid must be provided in these areas.
  • the parts to be connected must be aligned with one another in the circumferential direction.
  • this alignment can be achieved in that an intermediate ring delimiting the drive mechanism on the side of the threaded ring is arranged in a non-rotatable manner in the cup-shaped housing part.
  • the rotationally fixed connection can be established, for example, with the aid of axial pins.
  • the intermediate ring can also carry a wear-prone sealing ring which is easily accessible for repair and maintenance purposes by removing the housing part from the threaded ring.
  • a preferred field of application of the rotating devices according to the invention are gripper rotating devices for excavators, which can be rotated both when the load is hanging and when the gripper is pressed on, for example to produce boreholes.
  • the rotating devices shown in the drawing are intended for excavator grabs where high tensile, compressive and torque loads occur. They essentially consist of a stator 1 that can be connected to an excavator boom (not shown), a rotor 6 connected to the stator via a rotary connection 4, to which an excavator gripper (not shown) can be fastened, and one between stator 1 and rotor 6 acting drive mechanism 8.
  • the slewing ring 4 is consistently designed as a four-point bearing that absorbs both axial and radial and moment loads, which ensures a particularly compact design of the rotating device.
  • the running surfaces 10, 16 of the four-point contact bearing are molded directly into the stator material and the rotor material so that an axially symmetrical annular space is formed.
  • the spherical roller bearing bodies 41 can be introduced into the annular space via an opening leading into the annular space, for example closable with a stopper 11 '.
  • the stator essentially consists of three parts, the cup-shaped housing part 12, which includes, among other things, the drive mechanism 8, the bearing part designed as a threaded ring 13 and an intermediate ring 14, which is non-rotatably connected to the housing part 12 and which limits the drive mechanism 8 downwards and contains the wear-prone radial sealing ring 15.
  • the cup-shaped housing part 12 has at its lower end an internal thread 16 with which it can be detachably fastened to the external thread 17 of the threaded ring 13.
  • the housing part 12 can be easily removed from the drive mechanism 8 and the intermediate ring 14 with the sealing ring 15, for example for repair and maintenance purposes Thread g 13 removed and then screwed back on.
  • the threaded ring 13 contains, in its externally accessible circumferential area, a recess 18 into which an assembly tool can be inserted, via which a torque required for unscrewing or screwing on the housing part 12 can be exerted on the threaded ring.
  • the rotor 6 contains a cylindrical shaft 62 and a flange 63 which projects radially in the lower region and on which bores 64 are provided for fastening the gripper arrangement. If the threaded ring 13 is to be removed from the rotor shaft 62, the plug 11 'must first be removed from the bore 11 when the housing part 12 is removed so that the roller bearing bodies 41 can be successively removed from the annular space 10, 60 through the bore 11. In the assembled state, the plug 11 'is secured to the threaded ring 13 by a pin 19 and is also covered by the lower edge region of the housing part 12, so that it cannot be unintentionally released during operation.
  • the wing drive 8 'or 8 "in the case of FIG. 2 and one in the case of FIG. 3 contains two wings 80 which are mounted in a recess 65 of the rotor shaft 62 and pressed under the action of a compression spring 81 against the inner surface 20 of the stator 1, which divide the annular space 82 formed between the stator 1 and the rotor 6 into separate chambers.
  • the annular space 82 can be connected via the openings 83, 84 to the inflow line or the return line of a hydraulic pump arrangement, not shown, depending on the desired direction of rotation Hydraulic lines are located in the upper area of the housing part 12.
  • the exemplary embodiments of a rotating device shown in FIG. 4 contain in the right part a radial piston drive 8 '"with radial cam track 24 in the stator and in the left part an axial piston drive 81v with two axial cam tracks 25 in the stator.
  • the cylinder drum 85 is ring-shaped and has an internal toothing 86 with which it is pushed onto an external toothing 68 of the rotor shaft from above and connected to it in a rotationally fixed manner.
  • the supply and return of the hydraulic fluid to and from the piston cylinders takes place from above via a plane distributor 26, the channels 27 of which via the connections 21 are connected to the corresponding hydraulic lines on the stator housing 12.
  • the structure is otherwise similar to that of the exemplary embodiment according to FIG. 1.
  • the stator 1 is again in three parts and consists of a cup-shaped housing part 12 spanning the drive mechanism, a threaded ring 13 and screwed to the housing part 12 one with the housing part 12 non-rotatably connected, the drive mechanism downwardly limiting intermediate ring 14 with a radial seal 15.
  • the rotary connection 4 is formed by a four-point bearing, the running surfaces of which are molded directly into the threaded ring 13 and the rotor shaft 62.
  • At the upper end of the rotor shaft 62 there is also a radial bearing 5 designed as a floating bearing.
  • Fig. Shows two further embodiments of a rotary device, of which the right wing shown a drive 8 v and the left shown an inner gerotor contains 8 v '.
  • the wing drive can, for example, as Swivel wing drive with stop as shown in FIG. Or as a rotating rotary wing drive as shown in FIG. Or FIG. 6.
  • a rotating rotary wing drive as shown in FIG. Or FIG. 6.
  • the inner gerotor 8 v 'or internal gear motor corresponding to the left part of FIG. 5 is shown enlarged in cross section in FIG. 7. It consists of an inner toothed ring 88, which is attached to the rotor shaft 62 with a splined profile 87, and an intermediate toothed ring 90, which interacts both with the teeth 89 of the inner toothed ring 88 and with the teeth 28 of the stator housing 12.
  • the toothed rings interacting with one another each differ by one Tooth.
  • the stator 1 with the outer ring gear 89 and the rotor 6 with the inner ring gear 88 are arranged concentrically to one another, while the middle tooth ring 90 is arranged eccentrically to this and accordingly executes a wobbling movement around the common stator and rotor axis during the rotation.
  • the mode of operation of the gerotor is known per se (cf. DE-A-29 22 921).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Hydraulic Motors (AREA)
EP82110702A 1981-11-25 1982-11-19 Drehvorrichtung für hängende Lasten Expired EP0080670B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813146695 DE3146695A1 (de) 1981-11-25 1981-11-25 Hydromotor, insbesondere fuer greiferdreheinrichtung an baggern oder kraenen
DE3146695 1981-11-25

Publications (2)

Publication Number Publication Date
EP0080670A1 EP0080670A1 (de) 1983-06-08
EP0080670B1 true EP0080670B1 (de) 1987-05-06

Family

ID=6147177

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82110702A Expired EP0080670B1 (de) 1981-11-25 1982-11-19 Drehvorrichtung für hängende Lasten

Country Status (2)

Country Link
EP (1) EP0080670B1 (enrdf_load_stackoverflow)
DE (2) DE3146695A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4335678C2 (de) * 1993-10-20 2002-06-20 Thumm Heinz Oelhydraulik Drehvorrichtung für Baggergreifer

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3720306A1 (de) * 1987-06-19 1989-01-05 Thumm Heinz Oelhydraulik Drehvorrichtung fuer haengende lasten
SE457436B (sv) * 1987-12-28 1988-12-27 Oesa Ab Rotator foer kranburna arbetsredskap
DE3812883A1 (de) * 1988-04-18 1989-01-26 Manfred Keller Hydraulischer schwenkantrieb mit drehmomentuebersetzung
DE3843753A1 (de) * 1988-12-24 1990-06-28 Schaeff Karl Gmbh & Co Baggerarm
DE29621601U1 (de) * 1996-12-12 1998-04-09 Kinshofer Greiftechnik GmbH, 83666 Waakirchen Zweischalengreifer
FI114436B (fi) * 2000-07-07 2004-10-29 Plustech Oy Muunninyksikkö
SE525043C2 (sv) * 2002-04-02 2004-11-16 Indexator Ab Anordning vid en rotator
DE10309258B4 (de) * 2003-03-03 2006-10-12 Archimedes Voulgaris Hydraulikmotorenbau Gmbh Einrichtung zur Befestigung und zum Drehantrieb eines Greiferwerkzeugs
WO2005040509A1 (en) * 2003-10-22 2005-05-06 Digga Australia Pty Ltd Dampening apparatus
DE102008025026A1 (de) * 2008-05-24 2009-11-26 MTS Gesellschaft für Maschinentechnik und Sonderbauten mbH Bagger-Zusatzgerät
DE102010027895A1 (de) * 2010-04-17 2011-10-20 Holp Gmbh Drehvorrichtung für ein Anbaugerät an einer Arbeitsmaschine
SE538568C2 (en) * 2014-12-19 2016-09-20 Indexator Rotator Sys Ab Rotator for a jib-carried tool
SE1850692A1 (en) * 2018-06-08 2019-12-09 Indexator Rotator Sys Ab Hydraulic rotator aparatus
DE102020126143A1 (de) * 2020-10-06 2022-04-07 Lasco Heutechnik Gmbh Greifsystem sowie Kran

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB817964A (en) * 1956-07-23 1959-08-06 Frederick Weatherill Improvements relating to oscillating vane hydraulic motors
FR332292A (fr) * 1903-05-22 1903-10-20 Schmid Roost J Couronne de roulement pour coussinets à billes
GB459995A (en) * 1935-06-29 1937-01-19 Packard Motor Car Co Improved mountings for ball bearings and methods of assembling same
FR817265A (fr) * 1936-05-08 1937-08-31 Roulement-butée à billes
DE1013524B (de) * 1955-04-15 1957-08-08 Otto Nuebling Mit Druckoel betaetigter Drehservomotor
FR1498399A (fr) * 1966-06-24 1967-10-20 Engin hydraulique rotatif
NL132076C (enrdf_load_stackoverflow) * 1966-06-30
FR2265664A1 (en) * 1974-03-29 1975-10-24 Stimec Bernard Crane load anti-gyratory mechanism - has articulated link between upper frame and lower one engaging with load
US4059316A (en) * 1976-06-21 1977-11-22 Reed Tool Company Bearing retaining pin for earth boring drill
FR2358811A7 (fr) * 1976-07-15 1978-02-10 Bobin Michel Grappin destine notamment a la manutention de la ferraille
GB2009351B (en) * 1977-12-06 1982-05-26 Poclain Sa Device for the rotary assembly of a member controlled by pressurised fluid
DE2922921A1 (de) * 1978-06-07 1979-12-20 Nichols Co W H Innen-gerotor und verfahren zu seinem betrieb
DE2838428C2 (de) * 1978-09-02 1984-05-24 Fa. Heinz Thumm, 7012 Fellbach Drehvorrichtung für hängende Lasten
DE2838346C2 (de) * 1978-09-02 1985-02-14 Fa. Heinz Thumm, 7012 Fellbach Drehvorrichtung für einen Baggergreifer o.dgl.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4335678C2 (de) * 1993-10-20 2002-06-20 Thumm Heinz Oelhydraulik Drehvorrichtung für Baggergreifer

Also Published As

Publication number Publication date
DE3146695A1 (de) 1983-07-07
EP0080670A1 (de) 1983-06-08
DE3146695C2 (enrdf_load_stackoverflow) 1993-04-22
DE3276234D1 (en) 1987-06-11

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