Tensioning winch transmission device of belt conveyer

Abstract

The invention relates to a tensioning winch transmission device of a belt conveyer, which mainly comprises a box body, a main transmission mechanism, an auxiliary transmission mechanism and an output transmission mechanism which is arranged at the front end of the box body and connected with the main transmission mechanism, wherein the main transmission mechanism and the auxiliary transmission mechanism are arranged in the box body in parallel. In the invention, a gear pair comprising a main clutch, an auxiliary clutch and five gears is adopted to achieve the purpose that an input shaft of a winch rotates along one direction all the time while reeling off and rolling up so as follow the tensile force change of a conveyer belt and meet the requirement on the change of the conveyer belt within a larger range; dynamic braking can be directly carried out through a motor to limit the maximum reeling off speed so as to prevent safe accidents; and soft start during rolling up can be realized, thus impact force born by a steel wire rope and relevant components is reduced, and the service life of the components is prolonged. The device can be used for precisely controlling the tensioning force and is suitable for controlling the tensioning winch of the belt conveyer, particularly for a narrow space under a coal mine. The device has the advantages of simple structure, convenient maintenance, low manufacturing cost, strong generality and high reliability.

Description

technical field [0001] The invention relates to a transmission device, in particular to a transmission device suitable for a belt conveyor tensioning winch. Background technique [0002] The tension of the belt conveyor plays an extremely important role in its normal operation and the service life of the conveyor belt. The tension is mainly achieved by pulling the tensioning trolley with the wire rope. The tensioning trolley is equipped with a reversing roller of the conveyor belt. , Move the tensioning trolley to achieve tensioning or anti-loosening of the conveyor belt. The existing tensioning technologies mainly include three methods: hammer tensioning, hydraulic winch tensioning, common winch + oil cylinder tensioning and so on. Heavy hammer tensioning is a constant tension tensioning method. Its disadvantages are as follows: first, it cannot meet the requirement that the tension must follow the change of load during the working process of the conveyor belt; second, it ...

AI Technical Summary

Problems solved by technology

Heavy hammer tensioning is a constant tension tensioning method. Its disadvantages are as follows: first, it cannot meet the requirement that the tension must follow the change of load during the working process of the conveyor belt; second, it is difficult to increase or decrease the weight, and the labor intensity is high.

Hydraulic winch tensioning can basically overcome the shortcomings of heavy hammer tensioning, but there are two problems: one is that the hydraulic system responds slowly and cannot follow the change of conveyor belt tension in time; the other is that the efficiency of the hydraulic motor is too low, which wastes energy

Ordinary winch + oil cylinder tensioning can basically overcome the shortcomings of the above two tensioning methods, but there are still shortcomings: First, the piston stroke of the oil cylinder is limited, so the ability to follow the change of conveyor belt tension is also limited, especially for belt conveyors. The length of the machine increases gradually, from hundreds of meters to several kilometers, or even tens or tens of kilometers, and the following performance of the oil cylinder cannot meet the requirements; the second is that it is difficult to realize the "two-point" tension, that is, one tension when starting, Another tension is required during operation, and pressure relays are generally used to solve this problem, but the failure rate of pressure relays is too high to ensure normal production

In recent years, Australia has studied a new type of winch (code-named APW or HDW) that can overcome the shortcomings of the above three tensioning methods and basically meet the tensioning requirements of belt conveyors, but its structure is complex and installation is difficult. At present, only a few foreign companies can produce bearings, and the price is expensive, so it is difficult to meet the needs of the domestic market.

Images