Jib-telescopic material lifting device

Abstract

The invention relates to the technical field of lifting, in particular to a jib-telescopic material lifting device with simple structure, capable of conveniently relieving the bearing pressure of a jib in rotation with a lifted material and without occupying more space. The jib-telescopic material lifting device comprises a base; a turntable capable of rotating is mounted on the base; a jib is fixedly mounted on the turntable; a guide groove is formed in the head part of the jib; a lifting rod capable of moving is mounted in the guide groove; one end of the lifting rod is connected with the inner wall of the guide groove through a spring, and the other end of the lifting rod is exposed out of the guide groove and provided with a guide wheel; the spring is located in a compression state; a lifting winch matched with the guide wheel is mounted at the upper end of the jib; one end of a lifting rope is connected with the lifting winch, and the other end of the lifting rope is connected with a lifting hook after penetrating through the guide wheel; a stretching wheel is mounted at the side part of the lifting rod; a stretching winch matched with the stretching wheel is mounted at the side part of the jib; and one end of a stretching rope is connected with the stretching winch, and the other end of the stretching rope is fixedly connected with the jib after penetrating through the stretching wheel.

Description

technical field [0001] The invention relates to the technical field of hoisting and hoisting, in particular to a material hoisting device with a telescopic boom. Background technique [0002] In the field of material handling, the slewing crane is one of the commonly used handling machines. It can complete operations such as retrieving, transporting, and unloading. The boom generally uses a fixed length. After the material is hoisted by the boom, the turntable needs to be turned. Turn to the unloading position. For a fixed-length boom, the material is always at the outermost end of the boom during the rotation of the hoisted material, and the boom needs to bear a large pressure, which is easy to cause damage to it. Larger turning space. Contents of the invention [0003] In order to solve the above problems, the present invention provides a material hoisting device with a telescopic boom, which has a simple structure, can conveniently reduce the load-bearing pressure when...

AI Technical Summary

Problems solved by technology

[0002] In the field of material handling, the slewing crane is one of the commonly used handling machines. It can complete operations such as retrieving, transporting, and unloading. The boom generally uses a fixed length. After the material is hoisted by the boom, the turntable needs to be turned. Turn to the unloading position. For a fixed-length boom, the material is always at the outermost end of the boom during the rotation of the hoisted material, and the boom needs to bear a large pressure, which is easy to cause damage to it. large turning space

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