Sublevel caving hydraulic support back scraper conveyor coal collecting device

Abstract

The invention relates to a sublevel caving hydraulic support back scraper conveyor coal collecting device, and belongs to the technical field of coal mining and transportation equipment. The device comprises a connecting base, a swinging baffle plate, a swinging regulating hydraulic cylinder, a telescopic baffle plate and a telescopic regulating hydraulic cylinder, wherein the swinging baffle plate is hinged to the connecting base; a piston rod and a cylinder body of the swinging regulating hydraulic cylinder are hinged to the connecting base and the swinging baffle plate; slide groove structures are arranged at the two sides of the swinging baffle plate; the telescopic baffle plate is arranged in slide grooves of the swinging baffle plate; a piston rod of the telescopic regulating hydraulic cylinder is hinged to the telescopic baffle plate; and a cylinder body of the telescopic regulating hydraulic cylinder is hinged to the swinging baffle plate. The coal collecting device is connected with a scraper conveyor through a screw bolt; by regulating the angle of the swinging baffle plate and the length of the telescopic baffle plate, falling coal is effectively prevented from being thrown to a position behind the back scraper conveyor in the falling process in the integrated mechanical sublevel caving mining process; the coal mining rate is improved; and meanwhile, the occurrence of spontaneous combustion accidents due to coal thrown and remained in a goaf can be avoided.

Description

technical field [0001] The invention relates to coal mining and transportation equipment, in particular to a coal collecting device for a scraper conveyor at the rear of a hydraulic support for top coal caving. Background technique [0002] Coal is an important basic energy in our country, and various industrial sectors consume a large amount of coal every year. Although the proportion of coal consumption will decline in the next few years, coal consumption still occupies a huge proportion of primary energy consumption, and it is still one of the indispensable basic energy sources in my country. Comprehensive mechanized top-coal caving mining is one of the important mining methods for mining thick and extremely thick coal seams. This mining method has strong adaptability to coal seams and geological conditions. It can implement parallel mining and caving operations, which increases the mining intensity of coal seams. It simplifies the production process and greatly reduces ...

AI Technical Summary

Problems solved by technology

However, this mining method has disadvantages such as low coal recovery rate, large dust in working flour, high risk of spontaneous combustion and gas accumulation, etc.

In the comprehensive mechanized top-coal caving mining process, due to the limited width of the scraper conveyor at the rear of the top-coal caving hydraulic support, a large amount of coal is scattered behind the rear scraper conveyor during the top-coal caving process, resulting in waste of coal resources

In addition, with the continuous advancement of comprehensive mechanized top-coal caving equipment, the coal left behind the scraper conveyor at the rear is left in the goaf, which poses a major safety hazard of spontaneous combustion, which has a negative impact on the safety production of the coal mining face. bad luck

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