Method and excavating impulsion shovel used for simultaneously achieving coal breaking and surface cleaning with one time of impulsion

Abstract

The invention relates to the field of mine excavation, and specifically relates to a method used for simultaneously achieving coal breaking and surface cleaning with one time of impulsion, and an excavating impulsion shovel used for realizing the method. The excavating impulsion shovel comprises an impulse-cutting coal breaking and surface cleaning section and a fixing section. The impulse-cutting coal breaking and surface cleaning section comprises shovel teeth which are arranged on fixing components. The shovel teeth are positioned at the front part of the excavating impulsion shovel. The shovel teeth and the height of the coal seam requiring excavating form an I shape, a J shape and / or a ] shape. Coal breaking and surface cleaning are simultaneously achieved with one time of impulsion. With the arrangement of the cutting edges of the shovel teeth, a plane relative to a coal mining machine walking direction can be cleared. The pressure on the top of the excavating impulsion shovel is concentrated, such that a large impact force can be generated in a moment, and the coal seam can be broken under compressive stress. With the shapes and the arrangement of the shovel teeth fixed on the fixing components, coal breaking and surface cleaning can be simultaneously achieved with one movement. Therefore, with the excavating impulsion shovel, coal mining efficiency can be improved in respects of structure configuration, time utilization and impact force utilization. Energy and time can be utilized and saved to a maximal extent, and an equipment structure is optimized and simplified.

Description

technical field [0001] The invention relates to the field of mine excavation, in particular to a method for simultaneously completing coal dropping and surface cleaning in one impact and a mining shovel for implementing the method. Background technique [0002] The currently widely used mine mining equipment is the drum shearer. Its working principle is milling type blanking, which determines that the crushing of this mining method is relatively large, especially in the state of compressive stress, which consumes a lot of energy and reduces productivity and block rate. At the same time, a large amount of dust is generated during the crushing process. , resulting in problems such as poor mining environment and potential safety hazards. To sum up, the currently commonly used drum shearer mainly has the following defects in the process of use: (1) the rate of lumps is low; (2) there is a lot of dust, which pollutes the environment; (3) the material milled by the cutting part i...

AI Technical Summary

Problems solved by technology

Its working principle is milling type blanking, which determines that the crushing of this mining method is relatively large, especially in the state of compressive stress, which consumes a lot of energy and reduces productivity and block rate. At the same time, a large amount of dust is generated during the crushing process. , resulting in problems such as bad mining environment and potential safety hazards

To sum up, the currently commonly used drum shearer mainly has the following defects in the process of use: (1) the rate of block material is low; (2) there is a lot of dust, which pollutes the environment; (3) the material milled by the cutting part is relatively small Broken, high power consumption, a lot of waste of resources, high cost

[0003] The invention with the patent No. 200910309903.7 provides a coal mining method and coal mining equipment for implementing the method. The coal mining head of the equipment includes a plow plate, and the distance between the cutting saw teeth at the front end of the plow plate and the front end of the wedge is 300- 800mm, so the blanking and surface cleaning are divided into two parts and steps. Only after the wedge-shaped body cracks and collapses the coal, the saw teeth of the plow plate, bottom plate cleaning mechanism, and roof cleaning mechanism can clean the coal surface, and the plow The sawtooth of the shaped plate forms a line cutting, which has large resistance, high power consumption, poor efficiency, and waste of time. The separation of the blanking part and the surface cleaning part of the equipment increases the length of the whole machine, reduces the structural strength of the coal mining part, and is resistant to impact and Poor breaking resistance, short life, bulky equipment structure, poor operation flexibility

[0004] The impact head and impact arm of the utility model patent No. 200620137402.7 do not have a structure for cleaning the coal mining face after impacting coal falling. The connection mode of multiple impact arms and the power box is multi-point connection. The fixing method is complex, resulting in cumbersome and fragile operating structure. Multiple impact heads and impact arms are not combined on one fixed part. The use of fixed parts simplifies the complexity and absorbs the impact of the impact head and impact arm on the fuselage and power box. Reactive forces that make it difficult to use the device

[0005] The patent No. 201020274464.9 utility model crushing head and the patent No. 201010238402.7 invention patent crushing head have no structure for cleaning the coal face after impacting the coal falling, so they cannot be cleaned out after impacting the crushed coal wall so that the shearer can move forward smoothly coal surface, it is impossible to make the shearer move forward continuously, which is the same as the utility model patent with the patent number 200620137402.7.

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