Straight top heavy-duty elevating work platform

Abstract

The invention discloses a directly-pushed type heavy load lifting work platform. Multi-stage oil cylinder sets which are composed of common single-stage oil cylinders are used for achieving multi-stage lifting, the cost is lower than the cost of the structure of multi-stage oil cylinders, and maintaining is easy. At least four fall prevention devices which prevent a lift car from falling are symmetrically arranged on two sides of the lift car, sudden falling caused by oil cylinder failure is avoided, and the safety of the lifting work platform is improved. A plurality of multi-stage oil cylinder sets are symmetrically arranged on the two sides of the lift car, the multi-stage oil cylinder sets are composed of a plurality of single-stage oil cylinders, and the widths of the multi-stage oil cylinder sets increase stage by stage. A plurality of points of strength are arranged on the lift car, with the increase of the lifting height of the lift car, the points of strength are more dispersed and distributed evenly, and oil cylinder bearing force is even and not easy to disturb. The lift car is provided with lift car guide wheels, the multi-stage oil cylinder sets are provided with oil cylinder guide wheels, the disturbance of the oil cylinders is reduced, the lift car is made to be large in load, high in maximum lifting height and stable in lifting. The multi-stage oil cylinder sets are arranged, and lifting is guaranteed to be stable under the condition that the area of the lift car is larger.

Description

technical field [0001] The invention belongs to the technical field of hoisting machinery, and in particular relates to a straight-top heavy-duty lifting operation platform. Background technique [0002] Modern industry requires the fast and safe transport of large quantities of goods, including lifting and lowering goods. [0003] In the prior art, the devices for lifting and lowering goods mainly include drum winch type elevator, scissor lift table and oil cylinder straight top type elevator. Among them, the oil cylinder straight-top lift uses the oil cylinder as the driving device of the lifting platform, and does not use parts that are easy to break such as wire ropes, so the risk of falling due to broken wire ropes during use is reduced, and its load capacity is compared with that of the scissor lift platform. Stronger, higher lift height. [0004] The Chinese patent with the patent number ZL 200720057834.1 is called a non-soft traction straight-top hydraulic lift, wh...

AI Technical Summary

Problems solved by technology

[0005] The elevator disclosed in the above-mentioned patent is only supported by the oil cylinders on both sides, especially after lifting to the apex, the weight of the car is all pressed on the plungers of the two No. 2 oil cylinders. , the rigidity of the oil cylinder becomes worse, the oil cylinder is easily disturbed, the lifting process is not stable, affects the use, and reduces the service life of the equipment

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