Breakthrough in research on "two-way coal cutting" technology for coal mining machinery

Shandong Xinwen Mining Group Company coal mine for hours Xiezhuang low utilization of MG-200KW double-drum shearer use of corporate atmining face exposed in the actual production can not be "two-way cut coal" and work The management of the surface machine is difficult and the advantages of high power and double cutting are not fully realized. Actively organize engineering and technical personnel to carry out technological innovation and transformation of the coal machine system.

First, install an arc-shaped coal retaining plate on the rocker arm of the shearer to improve the coal loading efficiency of the lower drum of the shearer, especially to reduce the amount of coal discharged from the lower drum when the coal cutter is cutting coal. The floating coal of the road is cleaned.

The second is to encrypt the working surface of the shifter, from the past every 6m installation to a 4.5m per interval installation, while the past small flow of the shifter replaced with a large flow of the shifter.

The third is to combine the grouping and chasing operations of the working organization of the working face. Due to the concentrated workload on the working surface and the lower end, the process is more complicated. In order to facilitate the concentration of power on the key processes, the work surface and the lower end are organized in groups.

Through the above design and transformation, the “two-way coal cutting” coal mining process of the double-drum shearer in the high-grade general mining face can effectively improve the working environment of the working face and achieve the goal of high productivity, high efficiency, safety and low consumption. It is the working face of medium thick coal seam. The effective way to improve the yield is an extremely effective construction process to improve the yield level of the mining face. It completely solves the low efficiency of the “one-way coal cutting” construction process and construction process of the mining face MG-200KW shearer. The problem of low output and high cost is an improvement of the construction technology of the mining face. It can make the mining face truly realize the “two-way coal cutting”, which will greatly improve the average yield level and operating rate of the working face. It is estimated that a regular district team can produce 140,000 to 200,000 tons of raw coal a year. If the technology is promoted and applied in the conditional coal mining face, it can harvest 50-800,000 tons of raw coal a year, and the output value is 4500~7200. Ten thousand yuan. The project has good economic and social benefits and has broad prospects for promotion. As a new technology development and promotion project of the group company, the project will be fully promoted and applied within the group company through the technical appraisal of relevant departments at the beginning of January.

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