Research On Simulation Device And Simulation Test Of Longwall Mining

Coal mine fully mechanized mining automation technology is an important guarantee for achieving safe and efficient mining of coal,and is a prerequisite for coal supply for national economic development.In the "China Manufacturing 2025-Energy Equipment Implementation Plan",coal green intelligent mining equipment is included in one of the energy equipment development tasks;the national "13th Five-Year Plan" also clearly proposes to accelerate the automation and automation of coal in key energy technology equipment.The development and application of unmanned mining technology;the coal industry has also begun to explore the new mode of green mining of “Internet + artificial intelligence + automatic mining”.This paper explores the key technologies of automated fully mechanized mining face.The main research contents are as follows:(1)Combining the process and technical characteristics of the automatic mechanized mining face,the simulation test platform of the fully mechanized mining face was built,and the electronic control system,mechanical system and PC software of the test platform were analyzed and designed.(2)The location of the shearer is the key technology for automated production of the working face,and its accuracy is particularly important.Due to the inevitable drift and other errors in the positioning system,the positioning effect cannot meet the working requirements after a period of time.In this paper,a smoothing algorithm is applied to the coal mining machine positioning technology.When the shearer walks to the end face,the smoothing algorithm is used to correct the shearer trajectory.(3)Due to the different time of the shearer trajectory generation,the corresponding straightening algorithm of the scraper conveyor is also different.In the straightening test of the scraper conveyor based on the real-time shearer trajectory,it is proved by experiments that the straightening algorithm can improve the straightness error.(4)In the straightening test of the scraper conveyor based on the shearer track after the end face calibration,the results not only show that the straightening method can improve the straightness error,but also prove the positioning trajectory of the shearer based on higher precision.The straightening method is better than the straightening method based on the real-time shearer trajectory.(5)The factors affecting the straightness of the scraper conveyor are studied.The straightness prediction model of the scraper conveyor based on the range theory is used.The accuracy of the model is verified by changing the range of the normal distribution of the push error.