Experimental system for simulating impact presplitting and cutting

Abstract

An experimental system for simulating impact presplitting and cutting is characterized in that: a computer program control system is introduced, a motion state of a cutting part of a coal mining machine is simulated by a computer program, the program is used for controlling parameters such as a range and a rotating speed of a roller of the coal mining machine according to actual needs, a track isarranged above the roller of the coal mining machine, a computer is used for controlling the coal mining machine to move according to the position of the track, a positioning device is arranged in theexperimental system, a coal wall used for experiments is placed by the positioning device, the positioning accuracy is ensured, the problem of poor positioning accuracy of original equipment is solved, a conveyor belt is arranged below the equipment, the conveyor belt can clean fallen coal after being cut by cutting teeth in a working process, the working of the system is prevented from being influenced by the overlarge coal falling amount, the reliability of a whole-process experimental result is improved, the automation degree of the system is improved, the problems of low automation degree, large positioning error, long experimental period, and difficult experiment table construction of an original mode can be solved.

Description

technical field [0001] The invention belongs to the field of experimental systems, in particular to an experimental system for simulating impact pre-cracking and cutting. Background technique [0002] At present, coal is a very important part of my country's energy structure. Coal mining is still very important in my country. Although there are methods such as water mining, high-pressure water jets and other methods can be used to mine coal mines, but the mining efficiency is low, the output is small, and it is safe. Therefore, in the field of coal mining in my country, the shearer is still an indispensable fully-mechanized mining equipment. When the shearer is used in coal mining, the mining process is to use the shearer to cut The cutting teeth of the shearer are impacted to cause pre-cracking of the coal and rock, and then the coal is cut. Therefore, it is necessary to conduct an experimental analysis of the impact pre-splitting and cutting process of the shearer to simulat...

AI Technical Summary

Problems solved by technology

[0002] At present, coal is a very important part of my country's energy structure. Coal mining is still very important in my country. Although there are methods such as water mining, high-pressure water jets and other methods can be used to mine coal mines, but the mining efficiency is low, the output is small, and it is safe. Therefore, in the field of coal mining in my country, the shearer is still an indispensable fully-mechanized mining equipment. When the shearer is used in coal mining, the mining process is to use the shearer to cut The cutting teeth of the shearer are impacted to cause pre-cracking of the coal and rock, and then the coal is cut. Therefore, it is necessary to conduct an experimental analysis of the impact pre-splitting and cutting process of the shearer to simulate the process of impact pre-splitting and cutting. The experimental system is particularly important

At this stage, there is no highly integrated and automated simulated impact pre-splitting and cutting experiment system yet. Major enterprises, universities, and research institutions often adopt temporary constructions in the experiments of simulating impact pre-splitting and cutting. Manual, temporary baffles are used for fixing, and the process of impact pre-cracking of the shearer drum has not been automated. The replacement and positioning of the coal wall in each experiment are manually performed, with poor precision and low efficiency. Manual cleaning takes a lot of time, and at the same time, the deviation caused by touching the coal wall and other equipment during the cleaning process may lead to changes in the position of the equipment and affect the experimental results

Images