Single-drum coal mining machine for coal wall drilling and triangular coal cutting

Abstract

The utility model relates to the technical field of coal mining, in particular to a single-drum coal mining machine for coal wall drilling and triangular coal cutting, which comprises a machine body, two ends of the machine body are respectively connected with a left walking part and a right walking part, and the end part of the left walking part is connected with a rocker arm assembly. The rocker arm assembly comprises a sliding block, a rocker arm shaft and a cutting roller which are sequentially connected from right to left, the sliding block is hinged to the left walking part, one end of the rocker arm shaft is slidably connected with the sliding block, the other end of the rocker arm shaft is connected with the cutting roller, a sliding oil cylinder is arranged on the rear side of the sliding block and the rocker arm shaft, and a cylinder body part of the sliding oil cylinder is connected with the sliding block. The piston part is connected with the rocker arm shaft; and drilling machine assemblies are arranged on the left walking part, the right walking part and the top of the machine body, and each drilling machine assembly comprises a rack, a swing oil cylinder connected with the rack and drilling machine equipment arranged on the swing oil cylinder. Through the vertical stretching and retracting of the cutting roller and the structural design of the drilling machine, the safety and the propelling efficiency of working face mining are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to a single-drum coal mining machine used for drilling holes in coal walls and cutting triangular coal. Background Art

[0002] Gas, as the first of the five major disasters in coal mines, seriously restricts the safe production of mines. In recent years, with the increase in the depth and intensity of coal mining, the gas content in the coal mining face has gradually increased, and the gas outburst phenomenon has become increasingly significant. How to reasonably and effectively control the gas problem in the process of coal seam recovery has become the primary problem faced by coal mining enterprises.

[0003] In high-gas coal mining faces, coal seam outburst prevention verification drilling is required. Currently, handheld drills are generally used for this operation, which requires 3-4 people to operate simultaneously, manually adjust the drilling position and angle, and manually feed and pull out. This leads to difficulties in operation, unstable drilling, high labor costs, low work efficiency, poor safety, etc. during the drilling process, which is not convenient for drilling work. Therefore, there is an urgent need for a device that can move freely along the working face and has a drilling function to solve the above problems.

[0004] However, when the coal mining machine mines back and forth along the working face, the space occupied by the mechanized drill installed on the scraper will cause the double-drum coal mining machine to be unable to cut through the triangular coal at both ends, affecting the advancement of the working face. Utility Model Content

[0005] In order to solve the above technical problems, the utility model specifically adopts the following technical solutions.

[0006] A single-drum coal mining machine for drilling holes in coal walls and cutting triangular coal is designed, comprising a machine body, a left walking part and a right walking part are respectively connected to the two ends of the machine body, a rocker assembly is connected to the end of the left walking part, the rocker assembly comprises a sliding block, a rocker shaft, and a cutting drum which are sequentially connected from right to left, the sliding block is hinged to the left walking part, one end of the rocker shaft is slidably connected to the sliding block, and the other end is connected to the cutting drum, and a sliding oil cylinder is provided at the rear side of the sliding block and the rocker shaft, the cylinder body of the sliding oil cylinder is connected to the sliding block, and the piston part is connected to the rocker shaft;

[0007] The left walking part, the right walking part and the top of the fuselage are all provided with a drilling assembly, and the drilling assembly comprises a frame, a swing cylinder connected to the frame, and drilling equipment arranged on the swing cylinder.

[0008] Preferably, the left walking part and the right walking part respectively include a supporting sliding shoe and a guiding sliding shoe, the guiding sliding shoe is engaged with the pin row at the rear of the scraper conveyor, and the supporting sliding shoe is in contact with the pin row at the front end of the scraper conveyor.

[0009] Preferably, the distance between two adjacent frames is equal to the center distance between two adjacent hydraulic supports.

[0010] Preferably, the left walking section and the right walking section are respectively connected to the fuselage by bolts.

[0011] Preferably, a height-adjusting oil cylinder is provided between the bottom of the left traveling part and the sliding block, the cylinder body of the height-adjusting oil cylinder is hinged to the left traveling part, and the piston end is hinged to the sliding block.

[0012] The beneficial effects of the utility model are:

[0013] The utility model is connected with the sliding block through the sliding connection of the rocker shaft, and the sliding oil cylinder is used to drive the rocker shaft to drive the cutting drum of the coal mining machine to extend and retract forward and backward. When the gas content in the mined coal seam is high, the maintenance team can retract the cutting drum to realize the free passage of the coal mining machine along the working face, and use the integrated multiple drilling rig components to efficiently drill holes in the coal wall, so as to discharge the gas, reduce the labor intensity of the workers, and improve the safety of mining; the coal mining team can extend the cutting drum to cut the triangular coal at both ends and open the machine nest at both ends, so as to ensure the normal pushing and mining of the working face, reduce the time of the coal mining machine to cut coal by oblique cutting, and improve the mining efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model in the coal mining shift, when the cutting drum is extended;

[0015] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the coal mining machine during the maintenance shift;

[0017] Figure 4 It is a structural schematic diagram of the sliding fit between the rocker arm shaft and the sliding block;

[0018] Figure 5 It is a schematic diagram of the structure of the support and guide sliding shoes in the coal mining machine in cooperation with the scraper conveyor;

[0019] The numbers in the figure are: 1 body, 2 sliding cylinder, 3 cutting drum, 4 rocker shaft, 5 sliding block, 6 left walking part, 7 drilling equipment, 8 right walking part, 9 frame, 10 swing cylinder, 11 slide, 12 height adjustment cylinder, 13 supporting sliding shoe, 14 guide sliding shoe, 15 shovel plate, 16 pin row, 17 scraper conveyor. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] Example 1

[0022] A single drum coal mining machine for drilling holes in coal walls and cutting triangular coal, such as Figures 1 to 5 As shown, it includes a fuselage 1, and a left walking part 6 and a right walking part 8 are respectively connected to the two ends of the fuselage 1. The left walking part 6 and the right walking part 8 are respectively connected to the fuselage 1 by bolts. A rocker assembly is connected to the end of the left walking part 6. The rocker assembly includes a sliding block 5, a rocker shaft 4, and a cutting drum 3 connected in sequence from right to left. The sliding block 5 is hinged to the left walking part 6, and one end of the rocker shaft 4 is slidably connected to the sliding block 5. Specifically, a slideway can be provided on one side of the sliding block 5. 11, so that the rocker shaft 4 is slidably arranged in the slideway 11, and the other end is connected with the cutting drum 3, and a sliding cylinder 2 is arranged on the rear side of the sliding block 5 and the rocker shaft 4, the cylinder body part of the sliding cylinder 2 is connected with the sliding block 5, and the piston part is connected with the rocker shaft 4, the rocker shaft 4 can move forward and backward in the propulsion direction with the extension and retraction of the sliding cylinder 2, the movement stroke of the rocker assembly in the propulsion direction is one mining step, and the front end surface of the cutting drum 3 is flush with the front end surface of the fuselage when the rocker shaft 4 is extended.

[0023] The left walking part 6 and the right walking part 8 respectively include a supporting shoe 13 and a guiding shoe 14. The guiding shoe 14 engages with a pin row 16 at the rear of the scraper conveyor 17, and the supporting shoe 13 contacts with a pin row 15 at the front end of the scraper conveyor 17, so that both walk along the scraper conveyor.

[0024] The left walking part 6, the right walking part 8, and the top of the body 1 are all provided with a drilling assembly, which includes a frame 9, a swing cylinder 10 connected to the frame 9, and a drilling device 7 arranged on the swing cylinder 10, and the drilling angle of the drilling device 7 on the coal wall is adjusted by the swing cylinder 10. The distance between two adjacent frames 9 is equal to the center distance between two adjacent hydraulic supports.

[0025] A height adjustment cylinder 12 is provided between the bottom of the left walking part 6 and the sliding block 5, the cylinder body of the height adjustment cylinder 12 is hinged to the left walking part 6, and the piston end is hinged to the sliding block 5. The rocker arm assembly can be lifted and lowered by the extension and retraction of the height adjustment cylinder 12.

[0026] The single-drum coal mining machine of the utility model is installed at both ends of the scraper conveyor of the working face. In the coal mining shift, when the normal double-drum coal mining machine is performing coal cutting operations, the single-drum coal mining machine is utilized to extend the cutting drum 3 through the sliding cylinder 2 to synchronously perform the cutting of the triangular coal at both ends and the opening of the machine nest, thereby ensuring the normal pushing and mining of the working face, reducing the time of the coal mining machine's oblique cutting and reciprocating coal cutting, and improving the mining efficiency. In the maintenance shift, by retracting the cutting drum 3, the single-drum coal mining machine can be freely moved along the working face, and the integrated drilling rig assembly can be used to realize efficient drilling of the coal wall to discharge gas, thereby reducing the labor intensity of workers and improving the safety of mining.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A single drum coal mining machine for drilling coal walls and cutting triangular coal, characterized in that: The invention comprises a machine body (1), wherein a left walking part (6) and a right walking part (8) are respectively connected at both ends of the machine body (1), and a rocker assembly is connected at the end of the left walking part (6), wherein the rocker assembly comprises a sliding block (5), a rocker shaft (4), and a cutting drum (3) which are sequentially connected from right to left, wherein the sliding block (5) is hinged to the left walking part (6), one end of the rocker shaft (4) is slidably connected to the sliding block (5), and the other end is connected to the cutting drum (3), and a sliding oil cylinder (2) is provided at the rear side of the sliding block (5) and the rocker shaft (4), wherein the cylinder body of the sliding oil cylinder (2) is connected to the sliding block (5), and the piston part is connected to the rocker shaft (4); A drilling assembly is provided on the left walking part (6), the right walking part (8), and the top of the fuselage (1), and the drilling assembly comprises a frame (9), a swing cylinder (10) connected to the frame (9), and a drilling device (7) provided on the swing cylinder (10).

2. The single drum coal mining machine for coal wall drilling and triangular coal cutting according to claim 1, characterized in that: The left walking part (6) and the right walking part (8) respectively include a supporting sliding shoe (13) and a guiding sliding shoe (14), wherein the guiding sliding shoe (14) is engaged with a pin row (16) at the rear of a scraper conveyor (17), and the supporting sliding shoe (13) is in contact with a pin row (16) at the front end of the scraper conveyor (17).

3. The single drum coal mining machine for coal wall drilling and triangular coal cutting according to claim 1, characterized in that: The distance between two adjacent frames (9) is equal to the center distance between two adjacent hydraulic supports.

4. The single drum coal mining machine for coal wall drilling and triangular coal cutting according to claim 1, characterized in that: The left walking part (6) and the right walking part (8) are respectively connected to the fuselage (1) by bolts.

5. The single drum coal mining machine for coal wall drilling and triangular coal cutting according to claim 1, characterized in that: A height adjustment cylinder (12) is provided between the bottom of the left walking part (6) and the sliding block (5); the cylinder body of the height adjustment cylinder (12) is hinged to the left walking part (6), and the piston end is hinged to the sliding block (5).

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