Linear telescopic device

Abstract

The invention discloses a linear telescopic device. The linear telescopic device comprises a telescopic chain, a steel wire rope, a worm-type chain storage box, a driving mechanism and the like, wherein a groove channel extending along a spiral line is arranged in the worm-type chain storage box; the telescopic chain can be bent to one direction and then can be coiled in the groove channel of the worm-type chain storage box, and the head end of the telescopic chain is located outside the worm-type chain storage box and can stretch and retract in the linear direction; the steel wire rope is located on the back side of the single bending direction of the telescopic chain, the end of the steel wire rope is fixed to the head end and can synchronously stretch and retract along with the head end, and the stretch-out part of the telescopic chain is tensioned to be linear; the driving mechanism is connected with the telescopic chain and the steel wire ripe and drives the telescopic chain and the steel wire ripe to stretch and retract, and the stretching and retracting linear speed of the telescopic chain is the same as that of the steel wire rope. The linear telescopic device solves the long-distance transmission problem in finite constraint space, and the ratio of stretching length to the overall length after retracting is increased.

Description

technical field [0001] The invention relates to the field of telescopic devices, in particular to a linear telescopic device with a small footprint and a long extension length. Background technique [0002] Linear telescopic devices are widely used in lifting and aerial work machinery and automatic production lines to transport objects or people from one position to another, and the distance between the two positions is relatively long, which can be transported horizontally and vertically. [0003] Linear telescopic devices are widely used in hoisting machinery, and the telescopic devices of cranes include boom telescopic mechanisms and outrigger support mechanisms. The function of the boom telescopic mechanism is to change the length of the boom to obtain the required range and lifting height to meet the operation requirements. The telescoping mechanism of the boom adopts the mother-in-command type boom, which generally has three or more booms. There are basically three mo...

AI Technical Summary

Problems solved by technology

[0005] In order to provide a higher load capacity, the design of the telescopic part of the above-mentioned linear telescopic device is relatively thick, resulting in a large volume of the base part of the telescopic mechanism, and the ratio of the telescopic length to the overall length after retraction is small, which cannot fit within the effective space. Realize long-distance expansion and contraction

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