A multi-drum constant speed and constant tension hydraulic winch

Abstract

The invention discloses a multi-drum constant-speed constant-tension hydraulic windlass which comprises a rope storage drum, a large friction drum, a small friction drum and a power source for driving the large friction drum. The rope storage drum and the small friction drum are arranged coaxially, steel wire ropes on the large friction drum and the small friction drum are both wound in a single layer to realize constant-tension output, and a transmission mechanism used for keeping the large friction drum and the small friction drum to rotate at the same linear speed is arranged between the same. The multi-drum constant-speed constant-tension hydraulic windlass is simple and compact in structure, small in size and capable of realizing constant-tension output of the steel wire ropes and guaranteeing stationary motion of loads in a steel wire rope unwinding process.

Description

technical field [0001] The invention relates to a winch, in particular to a multi-drum hydraulic winch capable of realizing constant speed and constant tension output of a steel wire rope. Background technique [0002] The winch is the main operating device of the rescue vehicle. It is mainly used to complete the towing and rescue of the vehicle that is silted, overturned or loses its own ability due to technical failure; it can also perform self-rescue on the vehicle when conditions permit. [0003] At present, electric winches are the most used. However, ordinary electric winches are not suitable for applications where large loads are towed due to reasons such as low motor power, difficulty in heat dissipation, and short continuous operation time. , especially industrial use winches and military winches, more need winches with strong overload capacity. With the update of automobiles and the rapid development of hydraulic technology, hydraulic winches have gradually replac...

AI Technical Summary

Problems solved by technology

However, the hydraulic winches in the prior art are usually rated pulling force winches and have a single-drum structure. The disadvantage is that the pulling force and linear speed of the outer steel wire rope change continuously with the number of layers. When there are strict requirements on the winch speed, It is impossible to provide a stable speed accurately and uniformly, which is not conducive to the smooth movement of the load

In order to improve the accuracy of the winch, there are also constant-speed and constant-tension winches that use quantitative motors and constant-power pumps in foreign countries. However, this kind of winch has a complex structure, is expensive, and is difficult to popularize. It is not suitable for civilian use.

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