SU1384525A1 - Hoisting device - Google Patents

Abstract

This invention relates to a lifting and transport equipment. The purpose of the invention is the expansion of operational capabilities. The lifting device comprises two double shoulders levers 9 with counterweights Yu on the lower shoulders connected by shafts 14 and connected with upper shoulders by means of block 11, cable 12 and the same with load gripping body 29. Balancing the load gripped by load gripping body 29 is performed by turning two shoulder levers 9 s counterbalances IO when tensioning the cable 12 and off. 4 il.

Description

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FIELD OF THE INVENTION The invention relates to lifting and transport engineering, namely to lifting devices.

The purpose of the invention is the expansion of operational capabilities.

Figure 1 shows the device, a general view; figure 2 - section aa in figure 1; on fig.Z - section BB in figure 1; figure 4 - scheme of the polyspast,

The traverse includes a frame 1 on which a rack 2 is installed with a suspension 3 for hanging onto a hook of a cargo crane truck 4.

On rack 2, using bushings 5 and 6, a console 7 with a counterweight 8 is mounted. The console 7 is mounted on a rack 2 rotatable and equipped with a mechanism for balancing it in a vertical plane that includes two shoulders levers 9 with counterweights 10 fixed on their lower parts, block 11, which bends around the main cable 12., with which in the middle part of it are connected the heats 13. The above-mentioned two shoulders levers 9 are mounted on horizontal shafts 14j located in the openings of the console 7 coaxially, while their axes lie in the same plane with the vertical line,passing through the point of suspension 3, traverse the hook to the trolley 4, and are connected to each other by a cross member 15 to ensure joint operation. Console 7 contains a worm to 16 which is engaged. with a worm wheel 17, which is mounted on a rack 2, and an electric motor 18. At the same time, the lifting device is equipped with an equilibrium mechanism for the console 7 in the horizontal plane, which contains a T-bar 19 mounted on the side opposite to the console 7, on which the polyspast 20 with blocks 21 and 22 is mounted. The axes 23 of the blocks 21 zak-. The replenes are stationary, and the axes 24 of the blocks 22 are movably movable by means of a slider 25 carrying a weight 26. Rollers 27 are also fixed on the rod 19, the axes of which are parallel to axes 23 and 24 and arranged symmetrically to the vertical axis of the rod 19. x 23 blocks 21 are fixed at one end by cables 28 of poly-: spastic 20, the other ends of which are rollers 27 and intersect above the horizontal shelf of the rod 19 with the possibility of being attached to the trolley

4. To the free end of the cable 12 attached lifting body 29.

To prepare the lifting device for operation, it is installed under the overhead crane and the overhead crane hook secures the suspension 3. When it is lowered, the cables 28 of the chain hoist 20 are tensioned by the weight of the slide 25. The latter rises along the rod 19, in the crosswise located branches of the cables 28 of the chain hoist 20 forces arise that prevent the console 7 from being randomly rotated horizontally around the attachment point of the crosshead to the hook of the crane truck 4. The lifting device is moved horizontally by moving the crane bridge and the cargo edge oic trolley 4 vertically - lifting and lowering of the hook of the bridge crane. The rotation of the console 7 is carried out by rotating the electric motor 18 and the screw 16, mounted on the console 7 around the worm gear 17, mounted on the rack 2.

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The lifting of the load is carried out as follows. The load gripping body 30 by the horizontal movements of the bridge crane and its cargo trolley 4, as well as by the vertical movement of the hook of the cargo trolley 4, leads to a vertical line above the center of gravity of the load being lifted. The load is captured and moved to the right place in a balanced state. Balancing is done by turning the levers 9 with the counterweights 10 while the cable 12 pulls on the cable and the pull 13. The formula of the invention

A lifting device containing a carrier element, a vertical stand fixed on it with a suspension for a hook of a lifting mechanism, a console mounted on a rack rotating from a drive in a horizontal plane and a mechanism for balancing it on a hook of a lifting mechanism, characterized in that, in order to expand operational capabilities, The device is equipped with coaxially connected horizontal shafts mounted in the same transverse vertical plane with the suspension, with the upper parts corresponding to their console ends

FIG.

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fig a

Claims (1)

Claim A lifting device comprising a load-bearing element, a vertical rack rigidly mounted on it with a suspension bracket for a load-lifting hook, a console mounted on a rack turning from the drive in a horizontal ¹ plane and a mechanism for balancing it on the load-lifting hook, characterized in that, in order to expand operational capabilities , the device is equipped with coaxially connected horizontal shafts installed in the same transverse vertical plane with the suspension, with the upper parts of the corresponding t The ends of the console are two-arm levers, on the lower shoulders of which counterweights are rigidly fixed, and the upper shoulders of which are rigidly interconnected by a cross member, a block fixed to the end of the console and an envelope unit and connected at one end by flexible braces with a upper arm of the two-arm levers with a cable for communication with the load-gripping organ.