EP0124796B1 - Klemmbackenanordnung für eine schrittweise arbeitende hydraulische Seilzugvorrichtung - Google Patents

Klemmbackenanordnung für eine schrittweise arbeitende hydraulische Seilzugvorrichtung Download PDF

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Publication number
EP0124796B1
EP0124796B1 EP84104097A EP84104097A EP0124796B1 EP 0124796 B1 EP0124796 B1 EP 0124796B1 EP 84104097 A EP84104097 A EP 84104097A EP 84104097 A EP84104097 A EP 84104097A EP 0124796 B1 EP0124796 B1 EP 0124796B1
Authority
EP
European Patent Office
Prior art keywords
clamping
clamping jaws
clamping jaw
jaws
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
Application number
EP84104097A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0124796A1 (de
Inventor
Fritz Stumpmeier
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0124796A1 publication Critical patent/EP0124796A1/de
Application granted granted Critical
Publication of EP0124796B1 publication Critical patent/EP0124796B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/006—Power actuated devices operating on ropes, cables, or chains for hauling in a mainly horizontal direction

Definitions

  • the invention relates to a clamping jaw arrangement for a step-by-step hydraulic cable pulling device according to the preamble of claim 1.
  • the invention is based on the object of improving the wedge-jaw arrangement of the type mentioned at the outset in such a way that reliable self-clamping is achieved only by a small amount external force is safely achieved in all operating conditions.
  • the essential idea of the invention is in the combination of a known wedge jaw arrangement with a slide bearing arrangement between the wedge-shaped side of the jaw and a bearing track in the housing part (US-A-3 250 402 in connection with the positive guidance and the forced movement of the wedge jaws by the actuators
  • the plain bearing arrangement has a bearing material with a coefficient of static friction of about 0.04, which means that static friction occurs immediately between the rope and clamping jaws, and the much higher coefficients of friction that apply to it can be expected
  • the positive guidance is provided for the positive opening and closing movement. This is particularly important in view of the sticking effect of the clamping jaws on the rope, which occurs with very high rope compression.
  • a non-positive bearing preload is expediently carried out by a spring lying transversely to the clamping jaws, which ensures that the clamping jaw position is adapted to the bearing path of the housing. This preload is important for plain bearings, since otherwise the risk of contamination from the ingress of dust between the bearing tracks would have very disadvantageous consequences for the bearing life.
  • the control technology and the mode of operation of a cable pulling device is independent of the clamping jaw arrangement used. They are assumed to be known and will not be described again here.
  • the cable pulling device comprises a cylinder-piston unit, denoted overall by 1, with a passage 2 for the rope 3.
  • the cable pulling device comprises a jaw arrangement which can be moved back and forth and which is denoted by 4 and a stationary jaw arrangement which is denoted overall by 5.
  • the reciprocating jaw assembly 4 is connected to the piston rod of the piston 6 of the cylinder-piston unit.
  • the stationary jaw arrangement is firmly connected to the cylinder 7 of the cylinder-piston unit 1 by means of bolts 8.
  • Each of the jaw assemblies 4 and 5 comprises a substantially closed housing 9 and 10, which forms on the inside tapered, opposite bearing tracks.
  • a pair of clamping jaws 15, 16 is arranged within each of the housings 9, 10 and is biased by springs 17 in the closing direction for clamping the rope with its rope profile grooves 18 (FIG. 6).
  • the bearing arrangements between the wedge jaws 15, 16 and the housings 9, 10 are shown as plain bearings 20.
  • Each of the clamping jaws 15, 16 carries a guide pin 21, which protrude outwards through longitudinal slots 22, which are parallel to the wedge surfaces, through side walls of the housings 9, 10.
  • the guide pins 21 are each bridged on the outside of the housings 9, 10 by cross anchors 23, springs 24 being arranged in the hollow cross anchors 23, which press the guide pins 21 and thus the clamping jaws 15, 16 apart in a force-fitting manner and preload on the slide bearing 20 the cross arm 23 act on the outside of the housings 9 and 10 arranged actuators, which consist of hydraulic pistons 25, 26, which serve as push-open or closing pistons for the clamping jaws 15, 16.
  • the function of the device is such that when the load on the cable 3 is lifted, the reciprocating clamping jaw arrangement 4 is closed, namely by the springs 17, which lower the clamping jaws 15, 16 and with the cable profile grooves 18 against the cable 3 press, and by the hydraulic locking pistons 25 acting on the cross anchors 23.
  • the stationary clamping jaw arrangement 5 is opened by the friction of the cable 3 in the cable profile grooves 18 of the clamping jaws 15, 16 (the hydraulic piston 6 of the cylinder-piston unit moves in the stationary cylinder 7 up).
  • the return of the piston 6 down is initiated by the path-dependent reversing 27 on the control block 28 and causes the stationary jaw assembly 5 to close by the force of the springs 17.
  • the retracting jaw assembly 4 or its jaws 15, 16 are caused by the friction of the jaws on Rope 3 opened.
  • the stationary jaw arrangement 5 When a load acting on the cable 3 is lowered, the stationary jaw arrangement 5 is opened by the push-open pistons 26, as a result of which the load can be lowered via the pair of jaws 4 closed by the spring 17 and the closing pistons 25.
  • the gripping when lowering a load takes place by opening the clamping jaw arrangement 4 by means of the push-up pistons 26.
  • the load is held by the stationary clamping jaw arrangement 5, which is closed by the force of the springs 17 and the closing pistons 25.
  • the longitudinal slots 22 provided in the housings 9 and 10 of the clamping jaw arrangements 4 and 5 and the guide pins 21 guided therein ensure that the clamping jaws 15, 16 are forced to open when they are pushed open by the pistons 26.
  • the springs 24 additionally ensure that the clamping jaws engage positively Slide bearing 20.
  • a solution with two guide pins arranged next to one another in the longitudinal direction of the longitudinal slots 22 per clamping jaw would also be conceivable in order to achieve an even better form-fitting guidance.
  • FIG. 7 One possibility of how the resulting long jaw closing distances can be shortened when using a small wedge angle of the slide bearing is shown schematically in FIG. 7.
  • intermediate wedges 29 are arranged with a second smaller wedge angle as a translation.
  • the closing paths S 1 and S 2 of the jaw pairs 15 and 29 or 16 and 29 add up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
EP84104097A 1983-04-12 1984-04-12 Klemmbackenanordnung für eine schrittweise arbeitende hydraulische Seilzugvorrichtung Expired EP0124796B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3313199 1983-04-12
DE3313199A DE3313199C2 (de) 1983-04-12 1983-04-12 Klemmbackenanordnung für eine schrittweise arbeitende hydraulische Seilzugvorrichtung

Publications (2)

Publication Number Publication Date
EP0124796A1 EP0124796A1 (de) 1984-11-14
EP0124796B1 true EP0124796B1 (de) 1987-09-02

Family

ID=6196154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104097A Expired EP0124796B1 (de) 1983-04-12 1984-04-12 Klemmbackenanordnung für eine schrittweise arbeitende hydraulische Seilzugvorrichtung

Country Status (2)

Country Link
EP (1) EP0124796B1 (ja)
DE (2) DE3313199C2 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4615509A (en) * 1985-10-23 1986-10-07 Cibeles International Inc. Continuous operation linear hydraulic winch
DE4413165A1 (de) * 1994-04-15 1995-10-19 Rexroth Mannesmann Gmbh Hydraulische Hubeinrichtung zum Heben und Senken einer Last
FR2756266B1 (fr) * 1996-11-27 1999-02-12 Hpe Procede et dispositif de deplacement d'une charge par l'intermediaire d'un cable de traction
NO310714B1 (no) * 1998-11-18 2001-08-20 Mechlift As Fremmatingssystem for en strekklinekompensator
CN102080372A (zh) * 2010-12-14 2011-06-01 上海市城市建设设计研究院 一种自拖式搬场设备
US8540458B2 (en) 2011-06-14 2013-09-24 Roodle, Inc. Center hole ram cable puller

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250402A (en) * 1964-03-17 1966-05-10 Dresser Ind Safety brake

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7204622U (de) * 1972-08-24 Komm W Senkklettergerät, bei dem der erforderliche Lastwechselschritt durch einen besonderen Aushebezylinder ausgeführt wird
FR1394809A (fr) * 1964-02-04 1965-04-09 Central De Gestion Et De Contr Treuil hydraulique à mâchoires auto-serreuses
US3266776A (en) * 1964-02-04 1966-08-16 Central De Gestion Et De Contr Hydraulic winch with self-clamping jaws
DE1219199B (de) * 1965-02-01 1966-06-16 Pkm Hydraulik Karl Marx Stadt Hydraulisch betaetigtes Klettergeraet zum Heben und Senken von Lasten
US3474946A (en) * 1966-11-14 1969-10-28 Tractel Sa Double-acting hydraulic cable pulling system
FR92389E (fr) * 1967-02-17 1968-10-31 Central De Gestion Et De Contr Treuil hydraulique à mâchoires auto-serreuses
US3565400A (en) * 1967-08-12 1971-02-23 Mitsui Shipbuilding Eng Apparatus for raising and lowering a heavy weight
DE2929711A1 (de) * 1979-07-21 1981-01-29 Rautenkranz Int Hermann Hydraulisches seilzuggeraet
DE3036214C2 (de) * 1980-09-25 1983-01-05 Fritz 5600 Wuppertal Stumpmeier Schrittweise arbeitende hydraulische Seilzugvorrichtung
FR2498169B1 (fr) * 1981-01-19 1985-06-28 Kley France Coin de serrage de cable et treuil lineaire hydraulique utilisant de tels coins de serrage

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250402A (en) * 1964-03-17 1966-05-10 Dresser Ind Safety brake

Also Published As

Publication number Publication date
DE3313199A1 (de) 1984-10-25
DE3465734D1 (en) 1987-10-08
EP0124796A1 (de) 1984-11-14
DE3313199C2 (de) 1987-05-14

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