Chained electric hoist

Abstract

The invention relates to the field of electric hoists, in particular to a chained electric hoist. The chained electric hoist comprises an electric hoist body, a power line, a transmission chain, a height adjustment structure, a support structure, a limit structure and three guiding structures, wherein the limit structure for fixing a hoisting belt is arranged on the support structure, so that the opening and closing of the limit structure are controlled through the weight of a hoisted pipeline, and the hoisting belt and the limit structure are fixed before the pipeline is hoisted; the hoisting belt is limited by using the weight of the pipeline after the pipeline is hoisted, thus, the hoisting belt and the limit structure are effectively prevented from slipping off, and the installation and disassembly efficiency and quality of the hoisting belt and the limit structure, and the hoisting efficiency of the pipeline are improved; and the height adjustment structure for limiting the transmission chain is arranged on the support structure, so that the position of the support structure on the transmission chain is adjusted through the height adjustment structure, the condition that the transmission chain is wound again after the transmission chain extends out of the electric hoist body is avoided, thus, the wasting of electric energy is reduced, and the operation efficiency is improved.

Description

Technical field [0001] The invention relates to the field of electric hoists, in particular to a chain type electric hoist. Background technique [0002] Electric hoist is a kind of special lifting equipment. It is installed on the crane and gantry crane. The electric hoist has the characteristics of small size, light weight, simple operation and convenient use. It is used in industrial and mining enterprises, storage and docks. The electric hoist has a compact structure. The electric hoist whose motor axis is perpendicular to the drum axis adopts worm gear transmission. The electric hoist is mainly divided into: electric chain hoist, wire rope electric hoist (explosion-proof hoist), anti-corrosion electric hoist, double drum electric hoist, hoist, mini electric hoist, Group crane electric hoist, multifunctional hoist. [0003] However, when the transmission chain electric hoist is used in the winding pipe workshop to hoist large winding pipes, when operated by a single person, th...

AI Technical Summary

Problems solved by technology

[0003] However, when the transmission chain electric hoist is used for hoisting large winding pipes in the winding pipe workshop, when a single person operates, the height adjustment accuracy of the hook at the bottom of the ring chain from the pipe is poor, especially for beginners, it is impossible to operate and control with one hand Hold the hook with the other hand and fix the hook with the sling on the pipe, reciprocatingly adjust the distance between the hook at the bottom of the chain and the pipe, which causes waste of electric energy and affects the handling efficiency and quality of the pipe. During the process, it is easy to slip between the hook and the sling. When using a hook with a pressing piece, it is not convenient to fix the hook and the sling with one hand, which will affect the operation efficiency.

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