Coal mining machine

Abstract

The coal mining machine comprises a machine body, positioning devices for stable positioning are arranged on the front side and the rear side of the machine body, supporting frames are rotationally connected to the left end and the right end of the machine body, first hydraulic cylinders are rotationally connected between the supporting frames and the bottom end of the machine body, and vertical buffering assemblies are arranged on the front sides of the supporting frames. And a transverse buffering assembly is arranged on the front side of the vertical buffering assembly, a first motor is arranged in the transverse buffering assembly, and a cutting roller is fixedly installed at the output end of the first motor. By means of the vertical buffering assembly, the transverse buffering assembly, the first motor, the cutting roller and the positioning device, the mining impact force can be buffered, abrasion of the cutting roller is reduced, the service life of the cutting roller is prolonged, and the operation stability is further improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining machine technology, and in particular to a coal mining machine. Background Technology

[0002] A coal mining machine is a large and complex system integrating mechanical, electrical, and hydraulic components. It operates in harsh environments, and a malfunction can disrupt the entire mining operation, resulting in significant economic losses. This machine is used in medium and small-sized mines to cut the bottom groove in gently dipping thin coal seams and extremely thin composite coal seams, achieving the function of removing coal from the groove.

[0003] While existing coal mining machines use sliding tracks for movement, the cutting drums are typically fixed to the machine body. This lack of buffering during coal cutting causes significant wear and tear on the cutting drums, greatly reducing their lifespan and necessitating replacement, thus increasing costs. Furthermore, the stability of coal mining operations needs improvement. Utility Model Content

[0004] The purpose of this utility model is to provide a coal mining machine that can buffer the impact force of mining, reduce the wear of the cutting drum, increase its service life, and further improve the stability of operation.

[0005] To achieve the above objectives, a coal mining machine is provided, including a machine body. The front and rear sides of the machine body are provided with stable positioning devices. The left and right ends of the machine body are rotatably connected to support frames. A hydraulic cylinder is rotatably connected between the support frame and the bottom end of the machine body. A vertical buffer assembly is provided on the front side of the support frame. A horizontal buffer assembly is provided on the front side of the vertical buffer assembly. A motor is provided inside the horizontal buffer assembly. A cutting drum is fixedly installed at the output end of the motor.

[0006] The vertical buffer assembly includes a buffer groove plate, two mounting plates are fixedly connected to the inner wall of the buffer groove plate, and a spring buffer damper is fixedly connected through the outer wall of the two mounting plates. A slider is fixedly connected to the movable end of the spring buffer damper, and the outer wall of the slider is slidably connected to the inner wall of the buffer groove plate.

[0007] The lateral buffer assembly includes a sleeve, and a spring buffer damper is fixedly installed inside the sleeve.

[0008] According to the aforementioned coal mining machine, the bottom end of the machine body is symmetrically welded with locking blocks.

[0009] According to the coal mining machine, the movable end of the second spring buffer damper is fixedly connected to the rear side wall of the first motor.

[0010] According to the coal mining machine, the rear wall of the sleeve is fixedly connected to the front wall of the slider.

[0011] According to the coal mining machine, the rear wall of the buffer trough plate is fixedly connected to the front wall of the support frame.

[0012] According to the aforementioned coal mining machine, the positioning device includes a fixed plate fixedly connected to the outer wall of the machine body, a hydraulic cylinder II is fixedly installed through the middle of the fixed plate, a connecting plate is fixedly connected to the movable end of the hydraulic cylinder II, two motors II are fixedly installed on the top of the connecting plate, and drill rods are fixedly connected to the output ends of the motors II through the bottom end of the connecting plate.

[0013] This utility model has the following beneficial effects:

[0014] 1. Compared with existing technologies, this method utilizes a vertical buffer assembly, a horizontal buffer assembly, a motor, and a cutting drum. During coal mining, a hydraulic cylinder extends and retracts in conjunction with the machine body to rotate the support frame, while a motor drives the cutting drum to rotate for mining. A pair of spring buffer dampers buffer the vertical impact force on the cutting drum. When encountering relatively hard rocks, the spring buffer dampers provide a certain buffering force while pushing the cutting drum to gradually cut, reducing wear and increasing the service life of the cutting drum. When the front surface of the cutting drum touches the rock wall, a second spring buffer damper buffers the impact force, preventing the front of the cutting drum from colliding hard with the rock wall, which would affect the normal rotation of the cutting drum and improve the efficiency of the machine.

[0015] 2. Compared with existing technologies, by setting up a positioning device, when the coal mining machine is moved to the mining area via the guide rail, the hydraulic cylinder two is activated to push the connecting plate downwards, and at the same time the motor two is activated to drive the drill rod to rotate and drill into the ground, thereby positioning the machine body and improving the stability of the machine body operation. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a perspective view of a coal mining machine according to the present invention;

[0018] Figure 2 This is a structural diagram of a transverse buffer assembly for a coal mining machine according to the present invention;

[0019] Figure 3 This is a perspective view of a vertical buffer component of a coal mining machine according to the present invention;

[0020] Figure 4 This is a perspective view of a positioning device for a coal mining machine according to the present invention.

[0021] Legend:

[0022] 1. Machine body; 2. Support frame; 3. Vertical buffer assembly; 4. Horizontal buffer assembly; 5. Cutting drum; 6. Hydraulic cylinder; 7. Clamping block; 8. Positioning device; 9. Motor 1; 301. Buffer groove plate; 302. Mounting plate; 303. Spring buffer damper 1; 304. Slider; 401. Sleeve; 402. Spring buffer damper 2; 801. Fixing plate; 802. Hydraulic cylinder; 803. Connecting plate; 804. Motor 2; 805. Drill rod. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1-4 This utility model provides a coal mining machine, which includes: a machine body 1, a positioning device 8 for stable positioning on both the front and rear sides of the machine body 1, a locking block 7 symmetrically welded to the bottom of the machine body 1, a support frame 2 rotatably connected to both the left and right ends of the machine body 1, a hydraulic cylinder 6 rotatably connected between the support frame 2 and the bottom of the machine body 1, a vertical buffer assembly 3 on the front side of the support frame 2, a horizontal buffer assembly 4 on the front side of the vertical buffer assembly 3, a motor 9 inside the horizontal buffer assembly 4, and a cutting drum 5 fixedly installed at the output end of the motor 9.

[0025] The vertical buffer assembly 3 includes a buffer trough plate 301. The rear wall of the buffer trough plate 301 is fixedly connected to the front wall of the support frame 2. Two mounting plates 302 are fixedly connected to the inner wall of the buffer trough plate 301. A spring buffer damper 303 is fixedly connected through the outer wall of the two mounting plates 302. A slider 304 is fixedly connected to the movable end of the spring buffer damper 303. The outer wall of the slider 304 is slidably connected to the inner wall of the buffer trough plate 301. Through the vertical buffer assembly 3, the horizontal buffer assembly 4, the motor 9, and the cutting drum 5, during coal mining, the hydraulic cylinder 6 extends and retracts in coordination with the machine body 1 to drive the support frame 2 to rotate. The motor 9 drives the cutting drum 5 to rotate for mining. The spring buffer damper 303 buffers the vertical impact force received by the cutting drum 5. When encountering relatively hard rocks, the spring buffer damper 303 provides a certain buffering force to the cutting drum 5 while pushing the cutting drum 5 to gradually cut in, reducing wear and improving the service life of the cutting drum 5.

[0026] The transverse buffer assembly 4 includes a sleeve 401. The rear wall of the sleeve 401 is fixedly connected to the front wall of the slider 304. A second spring buffer damper 402 is fixedly installed inside the sleeve 401. The movable end of the second spring buffer damper 402 is fixedly connected to the rear side wall of the motor 9. By setting the transverse buffer assembly 4, when the front surface of the cutting drum 5 touches the stone wall, the second spring buffer damper 402 buffers the impact force, avoiding a hard collision between the front side of the cutting drum 5 and the stone wall, which would affect the normal rotation of the cutting drum 5 and improve the efficiency of the machine.

[0027] The positioning device 8 includes a fixed plate 801 fixedly connected to the outer wall of the machine body 1. A hydraulic cylinder 802 is fixedly installed through the middle of the fixed plate 801. A connecting plate 803 is fixedly connected to the movable end of the hydraulic cylinder 802. Two motors 804 are fixedly installed on the top of the connecting plate 803. The output ends of the motors 804 are fixedly connected to the bottom end of the connecting plate 803. When the coal mining machine is moved to the mining area by the guide rail through the positioning device 8, the hydraulic cylinder 802 is activated to push the connecting plate 803 downward. At the same time, the motors 804 are activated to drive the drill rod 805 to rotate and drill into the ground, thereby positioning the machine body 1 and improving the stability of the machine body 1.

[0028] Working principle: During use, the machine body 1 is placed on the existing guide rail of the coal mining machine via the clamping block 7. When the coal mining machine is moved to the mining area via the guide rail, the hydraulic cylinder 802 is activated to push the connecting plate 803 downward. At the same time, the motor 804 is activated to drive the drill rod 805 to rotate and drill into the ground, positioning the machine body 1 and improving the stability of the machine body 1. During coal mining, the hydraulic cylinder 6 extends and retracts in coordination with the machine body 1 to drive the support frame 2 to rotate, and the motor 9 drives the cutting drum 5 to rotate for mining. The spring buffer damper 303... The cutting drum 5 is buffered by the vertical impact force. When it encounters a relatively hard stone, the spring buffer damper 303 provides a certain buffering force to the cutting drum 5 while pushing the cutting drum 5 to gradually cut in, reducing wear and improving the service life of the cutting drum 5. When the front surface of the cutting drum 5 touches the stone wall, the spring buffer damper 402 buffers the impact force to avoid the front side of the cutting drum 5 from hitting the stone wall hard, which would affect the normal rotation of the cutting drum 5 and improve the efficiency of the machine.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A coal mining machine, comprising: The machine body (1) is characterized in that a stable positioning device (8) is provided on both the front and rear sides of the machine body (1), a support frame (2) is rotatably connected to both the left and right ends of the machine body (1), a hydraulic cylinder (6) is rotatably connected between the support frame (2) and the bottom end of the machine body (1), a vertical buffer assembly (3) is provided on the front side of the support frame (2), a horizontal buffer assembly (4) is provided on the front side of the vertical buffer assembly (3), a motor (9) is provided inside the horizontal buffer assembly (4), and a cutting roller (5) is fixedly installed at the output end of the motor (9); The vertical buffer assembly (3) includes a buffer groove plate (301), two mounting plates (302) are fixedly connected to the inner wall of the buffer groove plate (301), and a spring buffer damper (303) is fixedly connected through the outer wall of the two mounting plates (302). A slider (304) is fixedly connected to the movable end of the spring buffer damper (303), and the outer wall of the slider (304) is slidably connected to the inner wall of the buffer groove plate (301). The transverse buffer assembly (4) includes a sleeve (401), and a spring buffer damper (402) is fixedly installed inside the sleeve (401).

2. A coal mining machine according to claim 1, characterized in that, The bottom of the fuselage (1) is symmetrically welded with locking blocks (7).

3. A coal mining machine according to claim 1, characterized in that, The movable end of the second spring buffer damper (402) is fixedly connected to the rear side wall of the first motor (9).

4. A coal mining machine according to claim 1, characterized in that, The rear wall of the sleeve (401) is fixedly connected to the front wall of the slider (304).

5. A coal mining machine according to claim 1, characterized in that, The rear wall of the buffer groove plate (301) is fixedly connected to the front wall of the support frame (2).

6. A coal mining machine according to claim 1, characterized in that, The positioning device (8) includes a fixed plate (801) fixedly connected to the outer wall of the machine body (1). A hydraulic cylinder (802) is fixedly installed through the middle of the fixed plate (801). A connecting plate (803) is fixedly connected to the movable end of the hydraulic cylinder (802). Two motors (804) are fixedly installed on the top of the connecting plate (803). The output ends of the motors (804) are all fixedly connected to the bottom end of the connecting plate (803) with drill rods (805).

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