Fulcrum fixed multi-surface over-constrained radial scissor type lifting mechanism

Abstract

The invention belongs to the field of lifting equipment, and in particular relates to a fulcrum fixed multi-surface over-constrained radial scissor type lifting mechanism. W-shaped connecting pieces are respectively fixed on the upper plane of a base and the lower surface of a bearing platform according to vertex positions of regular triangles; three groups of scissor type trusses are vertical to the base; the bottom ends and the top ends of the scissor type trusses are connected with the W-shaped connecting pieces through a bottom rotation pair respectively; an inclined angle of 120 DEG is formed by planes where every two groups of scissor type trusses are positioned; star-shaped connecting pieces are arranged among the three groups of scissor type trusses and among connecting rods with the same height on each layer; and a driving device is arranged at the central position of the base. Compared with a parallel type scissoring machine in the prior art, the invention has the advantages that: the mechanism has a stable structure, the weight of the mechanism can be reduced without the variation of intensity, the rigidity is improved, and high loads can be born, so that the maximum operation height of a lifting platform is increased; and the mechanism has the characteristics of high foldable ratio, compact structure, low dead weight, high bearing capacity, high throughput capacity and high operability.

Description

technical field [0001] The invention belongs to the field of lifting equipment, in particular to a fulcrum-fixed multi-surface over-constraint radial scissor-type lifting mechanism. Background technique [0002] A lifting platform is a lifting machine that transports people or objects vertically. In addition to transporting goods at different heights, lifting platforms are widely used in high-altitude installation, maintenance and other operations. Its free lifting characteristics have been widely used in municipal maintenance, cargo transportation in docks and logistics centers, and building decoration. It has light weight, Self-propelled, electric start, self-supporting legs, simple operation, large working area and other advantages. [0003] According to the different lifting principles of the lifting mechanism, the lifting platform can be divided into scissor lifts, telescopic lifts, telescopic lifts, telescopic arm lifts, folding arm lifts, etc.; according to the diffe...

AI Technical Summary

Problems solved by technology

[0004] Now the common scissor lift mechanism is generally two sets of fork rods in parallel, which has the following disadvantages: since the two groups of fork rods are not symmetrical in parallel, when the lifting platform is raised to a high place and receives a side force It is easy to cause the lifting platform to shake due to insufficient rigidity; the continuous vibration increases the instability of the structure and even topples over, so its structural rigidity is poor

In addition, when the fork lever supporting the platform in the lifting mechanism is fixed at one end and slides at the other end, when the center of gravity of the heavy object carried remains unchanged, it is easy to cause a large change in the force of the mechanism when the lifting platform is raised and lowered, thereby increasing instability. factors, causing work inconvenience and psychological pressure to the top staff, and easily leading to dangerous accidents

Images