EP0070950A1 - Pince à prise interne pour le levage de charges, spécialement de rouleaux - Google Patents

Pince à prise interne pour le levage de charges, spécialement de rouleaux Download PDF

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Publication number
EP0070950A1
EP0070950A1 EP81710034A EP81710034A EP0070950A1 EP 0070950 A1 EP0070950 A1 EP 0070950A1 EP 81710034 A EP81710034 A EP 81710034A EP 81710034 A EP81710034 A EP 81710034A EP 0070950 A1 EP0070950 A1 EP 0070950A1
Authority
EP
European Patent Office
Prior art keywords
expanding
expanding mandrel
gripper according
shift lever
mandrel housing
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.)
Granted
Application number
EP81710034A
Other languages
German (de)
English (en)
Other versions
EP0070950B1 (fr
Inventor
Adolf Schmidt
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.)
Bartholomy and Co
Original Assignee
Bartholomy and Co
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 Bartholomy and Co filed Critical Bartholomy and Co
Priority to EP19810710034 priority Critical patent/EP0070950B1/fr
Priority to DE8181710034T priority patent/DE3173187D1/de
Publication of EP0070950A1 publication Critical patent/EP0070950A1/fr
Application granted granted Critical
Publication of EP0070950B1 publication Critical patent/EP0070950B1/fr
Expired 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
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
    • B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
    • B66C1/54—Internally-expanding grippers for handling hollow articles

Definitions

  • the invention relates to an internal gripper as a load lifter, in particular a roller lifter, with a connection means for a carrying device, for example a crane hook, and with an expanding mandrel, on the expanding mandrel housing of which a radially projecting seating surface is arranged in the upper region and in the expanding housing a spreading device are arranged, which at least consist of there is an axially movable spreading cone, which is connected to the connecting means at least when spreading and radially movable spreading teeth abutting against it, an automatic switching device for switching the spreading device to "spreading" when the seating surface is seated on the load and then switched to "loosening" after the load has been set down.
  • a connection means for a carrying device for example a crane hook
  • an expanding mandrel on the expanding mandrel housing of which a radially projecting seating surface is arranged in the upper region and in the expanding housing a spreading device are arranged, which at least consist of there is an axially movable
  • Internal grippers are used to transport loads that have a recess in the area of their center of gravity into which the internal gripper can move.
  • Material loads for example paper, rolled up on winding cores, in particular, come as loads or plastic sheeting, in question.
  • the inner gripper which is usually suspended from a crane hook via a suitable connection means, can be lowered for transport into the winding tube, where it is clamped with the winding tube and the load can then be lifted (cf. A. Schmidt, load handler with inner grippers in "conveying and lifting""26th year, No. 3, March 1976, pages 269 to 271).
  • a spring is arranged between the expanding mandrel housing and the extension of the expanding cone, which strives to move the expanding cone relative to the expanding mandrel housing in such a way that the expanding teeth are pressed outwards even without lifting the inner gripper will.
  • this requires that the expanding mandrel housing and expanding cone Before moving into the winding tube and after the load has been set down, they have to be pushed together by hand against the action of the spring in order to release the initial tension. At a relatively high load, the operator has to climb up, which creates the risk of an accident. In addition, handling below the crane hook bottle is not permitted.
  • connection means with one in the expanding mandrel Housing axially movably guided driving element for driving the expansion cone is connected after a certain idle stroke and that driving element and expanding mandrel housing are connected via a heavy weight changeover switch as a switching device.
  • a heavyweight switch is understood to mean a mechanical switching device which, after the driving element and the expanding mandrel housing have been pushed into one another, initially prevents the two parts from being pulled apart by appropriate latching, but releases the connection again when pushed further together.
  • the former switch position results after a load has been set down, if the driving element lowers due to its own weight into the expanding mandrel housing when the crane hook is lowered further and thereby also moves the expanding cone in such a way that the expanding teeth detach from the winding axis.
  • the inner gripper can then be lifted out of the winding tube.
  • the release position is reached when the internal gripper is lowered again into a winding tube and the seating surface of the expanding mandrel housing comes to rest on the load.
  • the driving element lowers a little further into the expanding mandrel housing, so that the connection between these two parts disengages.
  • the driving element connected to the crane hook pulls up the expansion cone, so that the expansion teeth are moved outwards against the winding tube, and the more the greater the weight of the load.
  • the heavy weight changeover switch essentially consists of two on the one hand on the driver element and the other on the part of the expanding mandrel housing parts, namely a triangular control disk and a shift lever which cooperates with the control disk and can be moved in the circumferential direction, the control disk having an essentially circumferential direction with an indentation and opposite a tip directed to suspending the shift lever, in the area of which a pawl for guiding the shift lever when pushing together the driving element and expanding mandrel housing is arranged against a force acting on the shift lever.
  • This design of the heavy weight changeover switch has proven to be particularly simple and reliable. It can also be implemented at a relatively low cost.
  • the shift lever can, for example, be directed downward from the driving element to the control cam on the expanding mandrel housing.
  • the shift lever expediently has a radially projecting guide pin for abutment on the control disk.
  • the shift lever is pivotally mounted on a radially extending axis.
  • the force acting on the shift lever can be gravity, for example by shaping an asymmetrically arranged weight.
  • the option of exerting a spring force on the gear lever is also provided.
  • this can also be rigidly attached to a guide ring which can be rotated in the circumferential direction against the action of a spring force.
  • a guide groove for guiding the shift lever into the indentation is provided opposite the indentation of the control disk.
  • a further improvement in the guidance can be achieved in that the control disk is surrounded by a groove in which the shift lever surrounds.
  • the pawl is expediently designed such that it can be pivoted away by the switching lever when the driving element and expanding mandrel housing are pulled apart.
  • the pawl can also be designed as a flat spring projecting from an edge.
  • the entrainment element be designed as an entrainment sleeve which has an inner web for entrainment of an extension of the expansion cone protruding into the entrainment sleeve.
  • the inner gripper 1 shown in FIGS. 1, 4 and 6 has an expanding mandrel 2 which can be sunk into the winding sleeve 3 of a paper roll 4.
  • the expanding mandrel 2 has a cylindrical expanding mandrel housing 5, in which a driving sleeve 6 is axially displaceably guided.
  • the inner gripper 1 can thus be hung on the crane hook.
  • the driving sleeve 6 has an anti-rotation device in the form of an axially extending guide groove 8, in which a guide block 10 fixed by means of screws 9 on the inside of the expanding mandrel housing 5 is fixed.
  • This anti-rotation device also has the task of limiting the axial relative movement between expanding mandrel housing and driving sleeve 6.
  • a support bolt 11 projects into the driving sleeve 6 from below into it, which has at its upper end a thickened guide piston 12 lying against the inside of the driving sleeve 6. As shown in particular in FIG. 6, it can be supported on an inwardly projecting annular web 13 of the driving sleeve 6.
  • an expansion cone 14 is fastened by means of a screw 15.
  • the screw 15 clamps the expansion cone 14 against a hat-shaped spacer sleeve 16, which is supported on a shoulder 17 on the supporting bolt 11.
  • the expansion cone 14 has a total of five expansion grooves 18 at equal angular intervals, which taper conically towards one another, that is to say become ever deeper.
  • Spreader teeth 19 are inserted into them, each of which consists of an expansion web 21 encompassing the expansion grooves 18 and an expansion surface 22 formed thereon.
  • the spreading surfaces 22 are so wide in the circumferential direction that there are only slight gaps between them, so the contact surface on the winding tube 3 is relatively large.
  • a locking ring 23 is inserted on the inside, on which a hat-shaped disk nut 24 is supported.
  • screw 25 is screwed from below, which carries an end cap 26.
  • a support web 27 is fastened, on which a pivot ring 28 which is rotatable in the circumferential direction is mounted. Its upward movement is opposed by two countered locknut 29, 3o limited.
  • a tension spring 31 acts on the swivel ring 28 in the circumferential direction.
  • a vertically downward shift lever 32 is rigidly attached to the swivel ring 28 and has a radially inwardly projecting guide pin 33 at its lower end.
  • the left side 36 in this view bends from an upper tip 37 in an arc obliquely to the bottom left, where it then merges into a side 38 extending in the circumferential direction. However, this side 38 has a strong indentation 39 upwards.
  • the adjoining right-hand side 40 has a hump 41. Above the hump 41, a flat spring 43 fastened by means of the screw 42 is let into the groove base and rises upwards from the groove base.
  • the area of the control groove 34 is surrounded by a cover tube 45 which is fastened to the expanding mandrel housing 5 at the bottom via a seat ring 46.
  • This cover tube 45 partially covers a cover pot 47 clamped between the eyebolt 7 and the driving sleeve 6. Both cover tube 45 and cover pot 47 are omitted in FIGS. 3, 5 and 7 in order to make the switching device shown there visible.
  • Figures 1 to 3 show the position in which the inner gripper 1 is suspended without load via its eye bolt 7 on a crane hook.
  • the driving sleeve 6 is pushed fairly far into the expanding mandrel housing 5, wherein - as can be seen above all in FIG. 3 - the shift lever 32 is seated in the lower recess 39 of the control disk 35 and in this way holds the expanding mandrel housing 5 raised.
  • the expansion cone 14 is pressed by the driver sleeve 6 via the spacer sleeve 16 as far down that the spreading teeth 19 g in the contour of the expanding mandrel 5 ereheatuses are retracted.
  • the inner gripper 1 can therefore be lowered with its expanding mandrel 2 into a cylindrical recess in a load to be transported.
  • the different positions of the driving sleeve 6 and expanding mandrel housing 5 can also be adjusted by hand by correspondingly displacing the two parts.
  • the shift lever can also be pivotally mounted on the driving sleeve.
  • the bracing in a scope Direction can - as in the example shown - take place via a spring or solely by gravity by attaching an asymmetrically attached weight to the suspension or by a suspension twisted in the circumferential direction to the control groove. In this way, the shift lever then always strives to pivot in one direction, as is done in the exemplary embodiment shown by means of the pivot ring 28 and the tension spring 31.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
EP19810710034 1981-07-31 1981-07-31 Pince à prise interne pour le levage de charges, spécialement de rouleaux Expired EP0070950B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19810710034 EP0070950B1 (fr) 1981-07-31 1981-07-31 Pince à prise interne pour le levage de charges, spécialement de rouleaux
DE8181710034T DE3173187D1 (en) 1981-07-31 1981-07-31 Internal grab for lifting loads, especially rolls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19810710034 EP0070950B1 (fr) 1981-07-31 1981-07-31 Pince à prise interne pour le levage de charges, spécialement de rouleaux

Publications (2)

Publication Number Publication Date
EP0070950A1 true EP0070950A1 (fr) 1983-02-09
EP0070950B1 EP0070950B1 (fr) 1985-12-11

Family

ID=8188621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810710034 Expired EP0070950B1 (fr) 1981-07-31 1981-07-31 Pince à prise interne pour le levage de charges, spécialement de rouleaux

Country Status (2)

Country Link
EP (1) EP0070950B1 (fr)
DE (1) DE3173187D1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4723884A (en) * 1985-01-19 1988-02-09 Maschinenfabrik Fr. Niepmann Gmbh & Co. Apparatus for unloading individual reels from a carrier member
GB2229202A (en) * 1989-03-13 1990-09-19 Thaelmann Schwermaschbau Veb Loading cable stranders: bobbin grippers
DE4330717A1 (de) * 1993-09-10 1995-03-16 Sestese Off Mec Folienrollenwechselvorrichtung
US5439264A (en) * 1993-02-01 1995-08-08 Margiottiello; John Apparatus for lifting objects having a hollow cylindrical core
GB2337983A (en) * 1998-06-04 1999-12-08 Rover Group Lifting pin assembly
US6010171A (en) * 1998-02-03 2000-01-04 John Margiottiello Apparatus for lifting objects having a hollow cylindrical core with remote power-actuated release
DE10048135A1 (de) * 2000-09-28 2002-04-18 Holzapfel & Co Kg Geb Vorrichtung zum hängenden Transport von Wickelrollen
CN112201376A (zh) * 2020-05-19 2021-01-08 散裂中子源科学中心 一种遥控外螺纹快速吊装装置
EP4043381A1 (fr) 2021-02-10 2022-08-17 TransOrt GmbH Dispositif de transport de matière en rouleaux

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1506827A (en) * 1923-12-22 1924-09-02 Rolph F Gellert Tongs and the like
FR1200429A (fr) * 1958-06-21 1959-12-21 Treuils Ponts Levage & Manuten Pince pour la manutention de bobines de fils métalliques et d'objets analogues
BE697133A (fr) * 1966-04-18 1967-10-02
US3485388A (en) * 1968-11-20 1969-12-23 William C Bohne Core grab
GB1224694A (en) * 1969-03-26 1971-03-10 Herbert Morris Brown Lenox Ltd Lifting tongs
DE2727919A1 (de) * 1977-05-17 1978-11-30 Hans Kueng Transportgreifer
DD139120A1 (de) * 1978-10-13 1979-12-12 Reich Karl Heinz Greifzange mit automatischem oeffnungs-und schliessmechanismus
DE2910624A1 (de) * 1979-03-17 1980-09-18 Ludolf Stegherr Kranzange mit selbstrastung

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1506827A (en) * 1923-12-22 1924-09-02 Rolph F Gellert Tongs and the like
FR1200429A (fr) * 1958-06-21 1959-12-21 Treuils Ponts Levage & Manuten Pince pour la manutention de bobines de fils métalliques et d'objets analogues
BE697133A (fr) * 1966-04-18 1967-10-02
US3485388A (en) * 1968-11-20 1969-12-23 William C Bohne Core grab
GB1224694A (en) * 1969-03-26 1971-03-10 Herbert Morris Brown Lenox Ltd Lifting tongs
DE2727919A1 (de) * 1977-05-17 1978-11-30 Hans Kueng Transportgreifer
DD139120A1 (de) * 1978-10-13 1979-12-12 Reich Karl Heinz Greifzange mit automatischem oeffnungs-und schliessmechanismus
DE2910624A1 (de) * 1979-03-17 1980-09-18 Ludolf Stegherr Kranzange mit selbstrastung

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4723884A (en) * 1985-01-19 1988-02-09 Maschinenfabrik Fr. Niepmann Gmbh & Co. Apparatus for unloading individual reels from a carrier member
GB2229202A (en) * 1989-03-13 1990-09-19 Thaelmann Schwermaschbau Veb Loading cable stranders: bobbin grippers
GB2229202B (en) * 1989-03-13 1993-05-12 Thaelmann Schwermaschbau Veb A gripper for charging a stranding machine with bobbins
US5439264A (en) * 1993-02-01 1995-08-08 Margiottiello; John Apparatus for lifting objects having a hollow cylindrical core
DE4330717A1 (de) * 1993-09-10 1995-03-16 Sestese Off Mec Folienrollenwechselvorrichtung
DE4330717C2 (de) * 1993-09-10 1998-03-12 Sestese Off Mec Vorrichtung zum Wechseln von Folienrollen und Verfahren zum Betreiben einer solchen
US6010171A (en) * 1998-02-03 2000-01-04 John Margiottiello Apparatus for lifting objects having a hollow cylindrical core with remote power-actuated release
GB2337983A (en) * 1998-06-04 1999-12-08 Rover Group Lifting pin assembly
DE10048135A1 (de) * 2000-09-28 2002-04-18 Holzapfel & Co Kg Geb Vorrichtung zum hängenden Transport von Wickelrollen
DE10048135B4 (de) * 2000-09-28 2005-05-19 Gebr. Holzapfel Gmbh & Co. Kg Vorrichtung zum hängenden Transport von Wickelrollen
CN112201376A (zh) * 2020-05-19 2021-01-08 散裂中子源科学中心 一种遥控外螺纹快速吊装装置
EP4043381A1 (fr) 2021-02-10 2022-08-17 TransOrt GmbH Dispositif de transport de matière en rouleaux

Also Published As

Publication number Publication date
EP0070950B1 (fr) 1985-12-11
DE3173187D1 (en) 1986-01-23

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