EP0058383A2 - Dispositif d'orientement pour charges suspendues - Google Patents

Dispositif d'orientement pour charges suspendues Download PDF

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Publication number
EP0058383A2
EP0058383A2 EP82100951A EP82100951A EP0058383A2 EP 0058383 A2 EP0058383 A2 EP 0058383A2 EP 82100951 A EP82100951 A EP 82100951A EP 82100951 A EP82100951 A EP 82100951A EP 0058383 A2 EP0058383 A2 EP 0058383A2
Authority
EP
European Patent Office
Prior art keywords
rotor
gripper
fastening part
connection
hydraulic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP82100951A
Other languages
German (de)
English (en)
Other versions
EP0058383A3 (fr
Inventor
Gunther Neumann
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 EP0058383A2 publication Critical patent/EP0058383A2/fr
Publication of EP0058383A3 publication Critical patent/EP0058383A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B66C3/14—Grabs opened or closed by driving motors thereon
    • B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors

Definitions

  • the invention relates to a device for rotating suspended loads of the type specified in the preamble of claim 1.
  • the hydraulic channels that run from the stator-side hose connections to the rotor-side line connections are designed to prevent the lines from getting tangled up when the load is turned.
  • a rotating device of this type is known (DE-OS 28 38 428), in which the gripper can be fastened to the rotor with the aid of screws which are screwed into the rotor from bottom to top.
  • the gripper In order to be able to screw in these screws from below, sufficient installation space or a suitable intermediate part must be provided in the area between the turning device and the gripper. This leads to an otherwise unnecessary increase in the overall height of the gripper with rotating device and the total weight.
  • the hose lines leading to the gripper are exposed to the risk of damage due to external mechanical influences, especially in the area of their connection points on the rotor.
  • the invention is therefore based on the object to improve the known rotary device of the type mentioned in that a simple, safe and quick attachment of the gripper to the turning device without voluminous spacers and without unnecessary assembly space and adequate protection of the line connections against external mechanical influences is guaranteed.
  • Figures 1 to 4 each show a side view of a rotating union in a partially sectioned representation with different arrangement and design of the rotor-side line connections for the gripper hydraulics.
  • FIGS la, 2a and 3a show sections with further variants of such connections.
  • the rotary devices shown in the drawing essentially consist of a stator 1, which can be fastened to the excavator boom with the bearing eye 11, and a rotor 2, which can be rotated about a vertical axis on the stator 1 with the aid of a hydraulic drive mechanism (not shown).
  • the rotor contains a number distributed over its circumference arranged vertical bores 21 for receiving cap screws 5, which are intended for fastening a fastening plate 6, 6 ', 6 "or another fastening part 6" of a gripper to the rotor 2.
  • the screws 5 can be passed through the bores 21 from the free space above the rotating device.
  • At least two hydraulic channels are provided on the rotating device, which are from the stator 1 via a rotation, not shown are guided to the rotor 2.
  • these hydraulic channels only the stator-side hose connection 12 of a channel 13 and various rotor-side connection variants of one or two channels 22 are shown in FIGS. 1 to 4.
  • the stator-side connections 12 are surrounded by a ring 23 which is arranged on the rotor and widens conically upwards, which provides protection against damage due to external mechanical influences, such as occur during excavator operation in the event of accidental impacts against an object located in the lifting or swiveling range of the excavator boom can, forms on the hydraulic hoses connected to the connections 12.
  • the rotor-side hydraulic connection 24 for the gripper actuation is located directly above the mounting plate 6 on the lateral surface of the rotor 2. It points radially outward, so that the hydraulic line to be connected there around the mounting plate 6 down to the gripper must be performed.
  • the connection point is largely shielded from external mechanical influences by a part of the gripper, not shown, located directly under the fastening plate 6 and projecting radially outward beyond it.
  • FIGS. 3 and 4 An even more effective protection is achieved with the exemplary embodiments shown in FIGS. 3 and 4, in which hydraulic channels 63, 64 leading to the gripper are provided within the mounting plate 6 ′′ or another mounting part 6 ′′, which are connected to the respective rotor-side connection 27, 28 are directly connected to the channels 22 passed through the rotating device.
  • an axial duct passage from the rotor to the mounting plate is provided, which is directed outwards either through an axially interposed sealing ring 30 (FIG. 3) or through an inner tube 31 with an upper and a lower, radially acting sealing ring 32 (FIG 3a).
  • the arrangement according to Fig. 3a ensures that even with a more or less large lifting of the mounting plate from the rotor there is still a tight channel connection.
  • the duct bushings 28, 64 from the rotor to the gripper are located in the region of a cylindrical separating surface 65 between a peg-like rotor part 29 projecting downwards and an annular fastening part 6 ′′ of the gripper.
  • These duct bushings are one above the other and to the outside sealed by sealing rings 33, which are arranged in circumferential grooves of the pin-like rotor part 29, against liquid leakage.
  • FIG. 5a shows a further embodiment of a hydraulically actuated excavator gripper 7 with a rotating device, the hydraulic cylinder 70 and rotating device of which is partially cut and enlarged in FIG. 5b.
  • Fig. 5c is a partial cross section through the hydraulic cylinder 70 with the side arranged connecting tube 57 shown in an embodiment modified from FIG. 5b.
  • the two shells 7 'of the excavator gripper 7 are articulated in mirror symmetry on the bearing eye 72 of the piston rod 71 projecting downwards through the cover 85 from the hydraulic cylinder 70 and also via the linkage 73 articulated on the bearing points 75 with the rods 73 arranged on the lateral surface of the hydraulic cylinder 70 Bearing eyes 74 connected.
  • the hydraulic cylinder is flanged with the aid of the screws 5 with its base plate 6 IV directly on the underside of the rotor 2 of the rotating device.
  • a connection is established between the chambers 83, 84 of the double-acting hydraulic cylinder 70 arranged below and above the piston 82 with the rotor-side connections of the hydraulic channels 22 'and 22''for actuating the gripper.
  • an opening 86 leading to the chamber 84 which is aligned with the connection of the hydraulic channel 22 '.
  • the ends of an inner tube 31 provided with radial seals 32 are inserted into the opening 86 and into the connection opening of the hydraulic channel 22 '.
  • the inner tube 31 has an annular collar 33 which prevents the inner tube from falling into the chamber 84 of the hydraulic cylinder 70.
  • a laterally projecting connection piece 76 which leads into the chamber 83 with a bore 77, is arranged, into the threaded opening 78 of which vertically points upwards, a socket 79 with a sealing ring 80 is screwed.
  • a corresponding socket 34 with sealing ring 36 is screwed into the rotor-side threaded opening 35 of the hydraulic channel 22 ".
  • the mutually facing insertion openings of the sockets 34, 79 arranged vertically one above the other are intended to receive the ends of a connecting tube 37.
  • a protective jacket 81.81 1 which in the case of Fig. 5b as a cylinder tube 81 and in the case of FIG. 5c as a U-rail 81 ', an open-edge recess is provided in the flange part of the base plate 6 IV projecting radially beyond the surface of the hydraulic cylinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Load-Engaging Elements For Cranes (AREA)
EP82100951A 1981-02-13 1982-02-10 Dispositif d'orientement pour charges suspendues Withdrawn EP0058383A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813105194 DE3105194A1 (de) 1981-02-13 1981-02-13 Drehvorrichtung fuer haengende lasten
DE3105194 1981-02-13

Publications (2)

Publication Number Publication Date
EP0058383A2 true EP0058383A2 (fr) 1982-08-25
EP0058383A3 EP0058383A3 (fr) 1984-05-02

Family

ID=6124759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100951A Withdrawn EP0058383A3 (fr) 1981-02-13 1982-02-10 Dispositif d'orientement pour charges suspendues

Country Status (2)

Country Link
EP (1) EP0058383A3 (fr)
DE (1) DE3105194A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149751A (en) * 1983-11-10 1985-06-19 Priestman Brothers Excavator bucket and knuckle assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8906752U1 (de) * 1989-06-02 1989-08-31 Schneider, Hans, 7070 Schwäbisch Gmünd Hebe- und Transportvorrichtung für Kranke

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1439220A (fr) * 1965-04-08 1966-05-20 Poclain Sa Benne multigriffes à vérins incorporés dans les griffes
FR2197093A1 (fr) * 1972-08-25 1974-03-22 Caterpillar Tractor Co
US4005895A (en) * 1975-11-17 1977-02-01 Cullings Harold L Rotational grapple
US4009643A (en) * 1975-02-26 1977-03-01 Heinz Thumm Hydraulic motor for rotating the bucket of an excavating machine
FR2358811A7 (fr) * 1976-07-15 1978-02-10 Bobin Michel Grappin destine notamment a la manutention de la ferraille
DE2838346A1 (de) * 1978-09-02 1980-03-20 Thumm Fa Heinz Drehvorrichtung fuer einen baggergreifer o.dgl.
DE2838428A1 (de) * 1978-09-02 1980-03-20 Thumm Fa Heinz Drehvorrichtung fuer haengende lasten

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1508347A (fr) * 1966-11-24 1968-01-05 Poclain Sa Ensemble d'orientation facilement démontable pour benne preneuse d'engin de terrassement
DE1556774A1 (de) * 1968-03-06 1970-02-26 Demag Zug Gmbh Greifer mit hydraulischem Dreh- und Greifantrieb
FR2158100B3 (fr) * 1971-11-02 1974-06-21 Billings R O
FR2226353B1 (fr) * 1973-04-18 1977-02-04 Poclain Sa
SE385857B (sv) * 1973-06-13 1976-07-26 Hiab Foco Ab Rotator
DE2428566A1 (de) * 1974-06-14 1976-01-08 Heinrich Goetzen Hydraulischer polypgreifer fuer bagger, kraene oder dergleichen
FR2411275A1 (fr) * 1977-12-06 1979-07-06 Poclain Sa Dispositif de montage a rotation d'un organe pivotant d'outil a fluide sous pression, tel qu'une benne preneuse
FR2418307A1 (fr) * 1978-02-24 1979-09-21 Poclain Hydraulics Sa Dispositif de montage a rotation d'un organe d'outil a fluide sous pression tel qu'une benne preneuse
US4211252A (en) * 1978-02-01 1980-07-08 The Yaun-Williams Bucket Co. Hydraulic coupler
SE7904624L (sv) * 1979-05-28 1980-11-29 Arcos Mek Ind Ab Anordning vid rotator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1439220A (fr) * 1965-04-08 1966-05-20 Poclain Sa Benne multigriffes à vérins incorporés dans les griffes
FR2197093A1 (fr) * 1972-08-25 1974-03-22 Caterpillar Tractor Co
US4009643A (en) * 1975-02-26 1977-03-01 Heinz Thumm Hydraulic motor for rotating the bucket of an excavating machine
US4005895A (en) * 1975-11-17 1977-02-01 Cullings Harold L Rotational grapple
FR2358811A7 (fr) * 1976-07-15 1978-02-10 Bobin Michel Grappin destine notamment a la manutention de la ferraille
DE2838346A1 (de) * 1978-09-02 1980-03-20 Thumm Fa Heinz Drehvorrichtung fuer einen baggergreifer o.dgl.
DE2838428A1 (de) * 1978-09-02 1980-03-20 Thumm Fa Heinz Drehvorrichtung fuer haengende lasten

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149751A (en) * 1983-11-10 1985-06-19 Priestman Brothers Excavator bucket and knuckle assembly

Also Published As

Publication number Publication date
EP0058383A3 (fr) 1984-05-02
DE3105194A1 (de) 1982-09-09
DE3105194C2 (fr) 1990-01-11

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Inventor name: NEUMANN, GUNTHER