Super lift winches and cranes

Abstract

The invention discloses a super-lift hoist and a crane, relates to the field of engineering machinery and is used for improving the safety of the super-lift hoist. This includes winch motor, sleeve, superlift drum and brake assembly; the brake assembly is used to brake the superlift drum. In the above technical solution, a brake assembly is added, which is used to brake the super-lift drum to prevent it from rotating under the action of load, thereby improving the safety of the super-lift winch. It can be seen that the super-lifting winch provided by the above technical solution can prevent the super-lifting drum from reversing due to the load of the wire rope when the engine is stopped and the super-lifting winch is in the unlocked state, which increases the safety redundancy of the super-lifting system. The motor life loss and material waste caused by the continuous operation of the hydraulic motor are reduced.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a super-lift winch and a crane. Background technique [0002] With the continuous development of social science and technology, engineering cranes as major equipment are widely used. Telescopic boom all-terrain cranes are favored by the market for their wide use site, flexible movement, rapid transition, and quick operation. It is increasingly used in wind power projects and large petrochemical projects. As a performance improvement point of large cranes, the super-lifting device has been accepted by customers. [0003] As the most important force transmission mechanism of the entire crane upper part, the super-lifting wire rope carries almost all loads and moments, and its function directly affects the actual performance of the entire super-lifting device. With the rapid development of the second generation of new products, fixed-length tensioning technology has been widel...

AI Technical Summary

Problems solved by technology

[0008] The inventor found that there are at least the following problems in the prior art: in the existing super-lift winch 101, when the driving force of the motor is small or lost, the super-lift drum 103 may reverse under the situation of a relatively large wire rope tension , resulting in data errors or dangerous accidents due to unloading of the wire rope

In order to prevent this situation from happening, the hoist motor 102 needs to work continuously to provide a steady stream of driving force, which will definitely cause the life of the hoist motor 102 to be reduced and the engine fuel to be wasted

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