EP0049708B1 - Dispositif d'accrochage d'une pièce préfabriquée en béton à un engin de levage - Google Patents

Dispositif d'accrochage d'une pièce préfabriquée en béton à un engin de levage Download PDF

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Publication number
EP0049708B1
EP0049708B1 EP80106180A EP80106180A EP0049708B1 EP 0049708 B1 EP0049708 B1 EP 0049708B1 EP 80106180 A EP80106180 A EP 80106180A EP 80106180 A EP80106180 A EP 80106180A EP 0049708 B1 EP0049708 B1 EP 0049708B1
Authority
EP
European Patent Office
Prior art keywords
arrangement
tongue
safety
set forth
lifting 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
EP80106180A
Other languages
German (de)
English (en)
Other versions
EP0049708A1 (fr
Inventor
Peter Ing. Grad. Hoyer
Walter Funke
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.)
Pfeifer Seil- und Hebetechnik & Co GmbH
Original Assignee
Pfeifer Seil- und Hebetechnik & Co GmbH
Pfeifer Seil- und Hebetechnik & Co 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 Pfeifer Seil- und Hebetechnik & Co GmbH, Pfeifer Seil- und Hebetechnik & Co GmbH filed Critical Pfeifer Seil- und Hebetechnik & Co GmbH
Priority to AT80106180T priority Critical patent/ATE12757T1/de
Priority to EP80106180A priority patent/EP0049708B1/fr
Publication of EP0049708A1 publication Critical patent/EP0049708A1/fr
Application granted granted Critical
Publication of EP0049708B1 publication Critical patent/EP0049708B1/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
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/34—Crane hooks
    • B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads

Definitions

  • the invention relates to a device for attaching a precast concrete element to a hoist, consisting of two elements that are movable relative to one another, the first element having an eyelet or the like for a connecting means to the hoist, and a receiving slot that is open at the bottom for a support bracket that is connected to the precast concrete and also a circular guide for the second element, which is designed as a pivotable, remotely operable bolt, which projects in the bolt position with a tongue through the slot, so that the support bracket rests on the tongue during the stroke.
  • DE-C-2 240 171 describes a device of the type specified above, wherein an arc-shaped locking bracket is used as the second element, which can be moved from a locking position by means of a remote control consisting of a tension member into an open position.
  • the locking position can be reached by hand or due to the gravity of the bolt.
  • the disadvantage of this design is that there is no security against incorrect operation. It is not clearly recognizable from the outside which position the second element is in, or the second element can be easily shifted from the set position, which is not visible from the outside.
  • a load hook of a similar design is described in US Pat. No. 2,864,644, the second element being pivotable about a bolt which is guided in an elongated hole and also having a downwardly directed securing lug which can be hooked into an adapted component on the first element is so that the closed position cannot be opened under load.
  • this design has a safety device, it is difficult to use because of the multiple mobility of the second element, namely the displacement in the elongated hole and the pivoting movement.
  • Devices for attaching a precast concrete element to a hoist are often used in practice in such a way that several devices are attached to one precast concrete element.
  • the devices must be brought into the locking position by hand.
  • the position of the respective device cannot be predetermined precisely, which makes it difficult to achieve a secure locking position.
  • the invention is based on the device of the type described in the introduction and proposes that a downwardly directed securing lug is formed on the second element, for which a receiving pan is provided on the first element, that the effective height of the securing lug or the effective depth of the receiving pan corresponds approximately to the size of a game of the second element in the guide, and that an externally visible actuating arm is attached to the second element, which interacts with a snap lock for the two end positions of the second element and indicates these end positions.
  • a simple position and basically unchanged possibility of movement of the second element in the guide can achieve a securing position which prevents the device from being opened unintentionally because the weight of the load prevents this.
  • the actuation space which is visible from the outside, can in turn easily be recognized even at a greater distance, whether the device is in the closed position or in the open position, the snap lock ensuring that the device is not used in an unstable intermediate position.
  • the actuating arm is frame-shaped on the second element and encloses the snap lock.
  • a compressed air cylinder is mounted on the first element, the piston rod of which acts on the second element in the direction of the open position of the bolt. In this way, a simple remote control is obtained and a plurality of devices can easily be operated at the same time.
  • the compressed air cylinder is mounted between two connected plates which essentially form the first element and between which the second element is movable.
  • the securing lug is arranged on the underside of the tip of the tongue.
  • the receiving pan is preferably arranged on a bridge between the plates. This bridge also connects the panels and the forces that occur are directly introduced into the panels.
  • the first element 1 of the device consists, as can also be seen in particular from FIG. 1, of the two plates 9 and 10 which are firmly connected to one another by means of the bridge 19 and by means of the sleeve 11.
  • the inner bore of the sleeve 11 results in an eyelet for the wire rope 23, which is part of a hoist, for example.
  • the hoist itself is not shown in detail.
  • the second element 2 is arranged, which also essentially has a plate-like shape.
  • approaches are provided in order to obtain a sufficiently large support 15 for the support bracket 21.
  • the support bracket 21 is formed by a wire rope which is firmly anchored in the precast concrete part 25.
  • the precast concrete part 25 has a recess 26 for this bracket 21 and the shape of the recess 26 allows the insertion of the device consisting essentially of the elements 1 and 2 for detecting the bracket 21.
  • a slot 20 is provided in the plates 9 and 10 for receiving the bracket 21, and when the bracket 21 is gripped, the latch 18 of the element 2 extends through this slot. The locking position is shown in FIG. 2.
  • the front end of the bolt 18 is designed as a tongue 22 and the tongue tip 13 has, as can be seen in particular from FIG. 4, a downwardly directed securing lug 3, for which a receiving socket 4 is provided in the bridge 19.
  • the effective height of the nose 3 or the effective depth of the receiving socket 4 corresponds approximately to the dimension, the radial mobility of the element 2 relative to the guide 5, which is formed by the outer circumference of the sleeve 11. In the locking position according to FIGS. 2 and 4, the nose 3 can therefore insert into the pan 4 and if the tongue 22 is loaded by the carrying bracket 21, an opening movement of the element 2 is therefore excluded from twisting in the direction of the arrow 27.
  • the actuating arm 7, which has a frame-like shape, is attached to the element 2. This arm 7 is clearly visible and freely accessible.
  • the arm 7 encloses the snap lock 6 with the spring 8 and the guide rod 28.
  • the guide rod 28 is held in the pivot bearing 29 and finds a guide in the rotatable rod 30 and it is clear that both the position according to FIG. 3 and the Position according to the Fig. Is secured by the spring 8. While the rod 30 is supported in the arm 7, the pivot bearing 29 is supported on the plates 9 and 10 between the lugs 31.
  • the lugs 31 of the plates 9 and 10 also carry the compressed air cylinder 16, the compressed air connection is designated 32.
  • the piston rod 17 presses on the shoulder 33 on the element 2.
  • the element 2 can be adjusted from the position in FIG. 2 in the direction of arrow 27 to the open position.
  • stops are provided between elements 1 and 2.
  • the closed position d. H. the adjustment from FIG. 3 to FIG. 2 is effected by hand, specifically on the arm 7.
  • the snap lock and the other means ensure a closed position in every position of the device relative to the precast concrete part, and the device can be opened in any such position by the compressed air cylinder.
  • the compressed air requirement is low, so that simple auxiliary units can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Claims (6)

1. Dispositif pour accrocher une pièce préfabriquée en béton à un engin de levage, constitué par deux éléments (1, 2) mobiles l'un par rapport à l'autre, le premier élément (1) comportant un oeillet ou l'analogue pour un moyen de liaison avec l'engin de levage, ainsi qu'une fente de logement (20) ouverte vers le bas pour un étrier porteur (21) relié à la pièce préfabriquée en béton, et en outre un guidage circulaire (5) pour le second élément (2), lequel est réalisé sous forme de verrou basculant télécommandé, qui, dans la position de verrouillage, pénètre par une languette (22) à travers la fente (20), de sorte que, lors du levage, l'étrier porteur (21) repose sur la languette (22), caractérisé en ce que, sur le second élément (2), est formé un bec de sécurité (3) orienté vers le bas, pour lequel est prévue sur le premier élément (1) une cavité de réception (4), que la hauteur efficace du bec de sécurité, ou la profondeur efficace de la cavité de réception, correspond approximativement à la grandeur du jeu du second élément (2) dans le guidage (5), et que, sur le second élément (2) est fixé un bras d'actionnement (7) visible de l'extérieur, qui coopère avec une sécurité à déclic (6) pour les deux positions terminales du second élément (2).
2. Dispositif selon la revendication 1, caractérisé en ce que le bras d'actionnement (7) a la forme d'un cadre et entoure la sécurité à déclic (6).
3. Dispositif selon la revendication 1, caractérisé en ce que sur le premier élément (1) est monté un vérin pneumatique (16) dont la tige de piston (17) agit sur le second élément (2) dans le sens de la position d'ouverture du verrou (18).
4. Dispositif selon la revendication 3, caractérisé en ce que le vérin pneumatique (16) est monté entre deux plaques (9, 10) reliées ensemble, qui constituent pour l'essentiel le premier élément (1) et entre lesquelles le second élément (2) est mobile.
5. Dispositif selon la revendication 1, caractérisé en ce que le bec de sécurité (3) est disposé sur le côté inférieur de la pointe (13) de la languette.
6. Dispositif selon la revendication 1 ou 4, caractérisé en ce que la cavité de réception (4) est disposée sur un pont (19) entre les plaques (9) et (10).
EP80106180A 1980-10-10 1980-10-10 Dispositif d'accrochage d'une pièce préfabriquée en béton à un engin de levage Expired EP0049708B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT80106180T ATE12757T1 (de) 1980-10-10 1980-10-10 Vorrichtung zum anhaengen eines betonfertigteils an ein hebezeug.
EP80106180A EP0049708B1 (fr) 1980-10-10 1980-10-10 Dispositif d'accrochage d'une pièce préfabriquée en béton à un engin de levage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80106180A EP0049708B1 (fr) 1980-10-10 1980-10-10 Dispositif d'accrochage d'une pièce préfabriquée en béton à un engin de levage

Publications (2)

Publication Number Publication Date
EP0049708A1 EP0049708A1 (fr) 1982-04-21
EP0049708B1 true EP0049708B1 (fr) 1985-04-17

Family

ID=8186842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106180A Expired EP0049708B1 (fr) 1980-10-10 1980-10-10 Dispositif d'accrochage d'une pièce préfabriquée en béton à un engin de levage

Country Status (2)

Country Link
EP (1) EP0049708B1 (fr)
AT (1) ATE12757T1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004074160A1 (fr) * 2003-02-21 2004-09-02 Itw Ramset Australia Pty Ltd Mecanisme de verrouillage d'un appareil de levage de panneaux

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018073107A1 (fr) 2016-10-19 2018-04-26 Dsm Ip Assets B.V. Cellule eucaryote comprenant de la xylose isomérase

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1725609A (en) * 1928-07-11 1929-08-20 Amos Herman Hoisting hook
US1716997A (en) * 1928-10-31 1929-06-11 Antoniow Tassos Logging hook
US2359557A (en) * 1944-06-07 1944-10-03 Hoffman Robert Safety tackle hook
US2561017A (en) * 1949-07-08 1951-07-17 Chicago Steel Foundry Company Safety hook
US2613101A (en) * 1950-10-17 1952-10-07 Roberson Claude Mcjunis Hook latch operating mechanism
US2736599A (en) * 1952-03-08 1956-02-28 Duff Norton Co Drop hook
US2864644A (en) * 1957-09-30 1958-12-16 Earl A Marryatt Cargo hooks
US2987341A (en) * 1959-10-28 1961-06-06 Peck & Hale Releasable hook
DE2240171C3 (de) * 1972-08-16 1975-06-05 Frimeda Metall- Und Drahtwarenfabrik Siegfried Fricker, 7131 Wiernsheim Transportanker
DE7441641U (de) * 1974-12-14 1976-06-16 Fa. Hugo Wupper, 4600 Dortmund Lastaufnahmemittel fuer aufhaengeoesen aufweisende stueckgueter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004074160A1 (fr) * 2003-02-21 2004-09-02 Itw Ramset Australia Pty Ltd Mecanisme de verrouillage d'un appareil de levage de panneaux

Also Published As

Publication number Publication date
ATE12757T1 (de) 1985-05-15
EP0049708A1 (fr) 1982-04-21

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