Single liftable compound pipe

Abstract

The invention provides lifting equipment, which has a self-locking function and low height. In particular, a compound band 2 forms the rising motion of a single liftable compound pipe through a combined motion of a compound mechanism 5 and forms the falling motion of the single liftable compound pipe through decomposed motion of the compound mechanism 5. The single liftable compound pipe can be kept at the stopped position for long time and has shallow foundation pit.

Description

technical field [0001] The invention relates to a vertical lifting mechanism, which is similar to a jack, and the external load acts vertically on the upper end of the equipment. Background technique [0002] The lifting platform with a certain stroke has a corresponding minimum clear height, which is the height occupied by the equipment itself. At present, lifting platforms are usually realized in two ways: hydraulic drive and screw drive, each with its own advantages and disadvantages: 1) The hydraulic scissor lift generally occupies the smallest equipment height for the same stroke. The hydraulic scissor lift table requires multiple hydraulic cylinders to work synchronously. Since multiple hydraulic cylinders can only be synchronized softly by the synchronous valve, rigid synchronization cannot be achieved, so it is difficult to achieve precise synchronization. When the lifting platform stops at a certain position, there are height differences at different positions of t...

AI Technical Summary

Problems solved by technology

At present, the lifting table is usually realized by hydraulic drive and screw drive, each with its own advantages and disadvantages: 1) The same stroke is generally the minimum equipment height occupied by the hydraulic scissors support lift table

The disadvantage of the screw lift table is that the larger the stroke of the lift table, the larger the length of the screw rod and the deeper the required foundation pit.

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