SU1224242A1 - Single-rope grab bucket - Google Patents

Description

The invention relates to hoisting equipment and can be used during transshipment operations, in particular when working in spaces limited in height.

The circuit of the invention is improved convenience in operation in cramped conditions.

FIG. 1 dan one-rope grab, general view; in fig. 2 - the same, side view; in fig. 3 — single-rope grab with open jaws and an open fixation mechanism; in fig. 4 - the same, with a closed locking mechanism; in fig. 5 — grab with a closed jaw and a closed fixation mechanism; in fig. 6 - the same, with an open locking mechanism.

The grapple (Fig. 1 and .2) contains the bottom 1, between the full-time. 2 and upper 3 crossheads, jaws 4 pivotally attached to the lower crossbar 1, ti gi 5 connecting the jaws 4 to the upper crosshead 3, a double joint hinge, two pairs of lower links 6 and 7 which are connected to the lower crosshead 1, and two pairs of upper links 8 and 9 - with intermediate spreader 2, and a device for fixing the mutual arrangement of the lower 1 and intermediate 2 traversing. Said device includes a bracket 10 pivotally connected by means of an axis 11 to a pair of lower links 6 of the four-link, a switch 12 hingedly fixed on the head of the bracket 10, and a finger 13 located on the pair of lower links 7 of the four-link. The upper traverse 3 is made in the form of two arcuate elements.

Grapple with earrings 14, fixed ND. the intermediate yoke 2 is hung on the hook 15 of the crane.

The device works as follows.

The grab with the opened jaws 4 is lowered until the edges of the jaws 4 come into contact with the material. The intermediate yoke 2 is in cooperation with the elements 14. The finger 13 is located in the throat of the bracket 10. Then the crane hook 15 is lowered further, the intermediate yoke 2 wakes out of the interaction with the element 0

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14, the pairs of lower links 6 and 7 are diverted in opposite directions until the upper links 8 and 9 of the four-star artifact take up a horizontal position. In this case, the finger 13 interacts with the working surface of the switch 12, rotates the bracket 10 around the axis 11, and the links of the cephalter turn out to be in the unlocked state. Upon further lowering of the crane hook 15, the lower link pairs 6 and 7 begin to converge, and the finger 13 turns the switch 12 and enters the gap of the bracket 10. After that, the crane hook 15 lifts, the lower link pairs 6 and 7 are dispersed until the finger 13 does not rest against the working surface of the shackle 10. The mutual arrangement of the cross arms 1 and 2 turns out to be fixed, and the jaws 4 with further lifting of the hook 15 of the crane begin to close, scooping up the material ..

The filled grab is moved to the place of unloading and lowered onto the material. The hook 15 of the crane is lowered, with the pairs of lower links 6 and 7 starting to converge, the finger 13 is moved to the opposite wall of the shed of the bracket 10, allowing the switch 12 to return to its original position. Then the hook 15 of the crane is raised, and the pair of lower links 6 and 7 disperse to the sides until the upper links 8 and 9 of the four-wheel-bell are in a horizontal position. In this case, the finger 13 interacts with the working surface of the switch 12, the clip 10 rotates around the axis

11 and the links of the fourstar are in the unlocked state. Upon further lifting of the crane hook 15, a pair of lower links 6 and 7 converge, the finger 13 rotates the switch 12, enters the shed of the strap 10, moves to the far wall of its shed and rotates the switch

12 in the original position. Braces 1 and 2. turn out to be unlocked relative to each other. With further

By lifting the crane hook 15, the intermediate yoke 2 interacts with the elements 14, and the jaws 4 begin to open, freeing the grapple from the material.

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Compiled by T. Nikulina Editor T. Miteiko Tehred M. Khodanich Proofreader M. Sharoshi

Order 2798 Circulation 799 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

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Claims (1)

A SINGLE-ROPE GRAPPER containing the lower, upper and intermediate traverses mounted on the lifting machine, jaws articulated to the lower traverse, rods connected to the jaws and the upper traverse, and a latch for the relative position of the lower and intermediate traverses, characterized in that, for the purpose of enhancing ease of use in spaces with limited height, it is equipped with a double articulated four-link linker, the lower links of which are connected to the lower and the upper links to the intermediate traverses, while much lower and the intermediate position of the traverse is pivotally connected with one of the pairs of lower hinge zve Ippolito Nievo chetyrohzvennika to interact with other parts of its pair of lower coupling member. 1224242 2 mi 14, the pairs of the lower links 6 and 7 diverge in opposite directions until the upper links 8 and 9 of the four-link take a horizontal position. In this case, the finger 13 interacts with the working surface of the switch 12, rotates the bracket 10 around the axis 11, and the links of the four link are 10 in the unlocked state. With further lowering of the hook 15 of the crane, the pairs of the lower links 6 and 7 begin to converge, while the finger 13 turns the switch 12 and enters 15 throat of the bracket 10. After this, the crane hook 15 is lifted, the pairs of the lower links 6 and 7 diverge until the finger 13 abuts against the working surface of the bracket 10. The relative position of the traverse 1 and 2 is fixed, and the jaw 4 is further raised hook 15 of the crane begin to close, scooping up the material. 25 The filled grapple is moved to the place of unloading and lowered onto the material. The crane hook 15 is lowered, while the pairs of the lower links 6 and 7 begin to converge, the finger 13 moves to the opposite wall of the throat of the bracket 10, allowing the switch 12 to lower to its original position. Then the crane hook 15 is lifted, and the pair of lower links 6 and 7 diverges to the sides until the upper links 8 and 9 of the four link are horizontal. When this finger 13 interacts with the working surface of the switch 12, 40 bracket 10 rotates around an axis 11 and the links of the four link are in a released state. With a further lifting of the crane hook 15, the pairs of lower links 6 and 7 converge, finger 13 turns the switch 12, enters the throat of the bracket 10, moves to the far wall of its throat, and then rotates the switch 12 to the initial position. Traverses 1 and _ 2 turn out to be uncoupled relative to each other. With further 'Lifting of the hook 15 of the crane, the intermediate traverse 2 interacts with elements 14, and the jaws 4 begin to open, freeing the grab from mother ⁵⁵ ala.