Overload protection device for steel wire rope

Abstract

The invention provides an overload protection device for a steel wire rope. The overload protection device can effectively solve the problem that a heavy object is prone to fall after the heavy objectis lifted. The overload protection device comprises a supporting frame; a clamping device is arranged in the supporting frame; clamping blocks are arranged in a bilateral symmetry mode and arc-shapedblocks; the outer circle surfaces of the arc-shaped blocks are connected with horizontal plates; first connecting rods and first pin shafts are arranged below the horizontal plates; the first connecting rods are arranged on the first pin shafts in a sleeving mode through sliding grooves; baffles are arranged on the outer sides of the first connecting rods; strong springs are connected between thefirst connecting rods and the baffles; a limiting step is arranged in the supporting frame; a lifting unit is arranged right below the clamping device; clamping grooves are formed in the opposite endsurfaces of the horizontal plates; elastic blocks are arranged between every two horizontal plates; the inner side surface of each elastic block is an arc surface; every two elastic blocks can move up and down and can be clamped into the clamping grooves; the outer sides of every two elastic blocks are connected to one cam; and the rotation of each cam can drive the corresponding two elastic blocks to move up and down. The overload protection device has the advantages of being ingenious in concept and safe to use.

Description

technical field [0001] The invention relates to the technical field of hoisting, in particular to a wire rope overload protection device. Background technique [0002] During the hoisting process of the crane, the thickness of the wire rope is very important, which is directly related to the safety of the hoisted object and the operator. During the hoisting process of the crane, in most cases, the hoisting is to hang the heavy object through the hook under the crane. Wire rope for lifting. [0003] Due to the fact that there are many thicknesses and specifications of steel wire ropes in each workshop, most operators choose steel wire ropes according to the rough estimation of the weight of the heavy objects when lifting, which may lead to inaccurate estimates when lifting. When the object is too heavy, the weight of the heavy object is greater than the lifting capacity of the steel wire rope. At this time, when the steel wire rope is used for hoisting, it is easy to cause t...

AI Technical Summary

Problems solved by technology

[0003] Due to the fact that there are many thicknesses and specifications of steel wire ropes in each workshop, most operators choose steel wire ropes according to the rough estimation of the weight of the heavy objects when lifting, which may lead to inaccurate estimates when lifting. When the object is too heavy, the weight of the heavy object is greater than the lifting capacity of the steel wire rope. At this time, when the steel wire rope is used for hoisting, it is easy to cause the steel wire rope to break and the heavy object to fall during the high-altitude operation.

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