Fully mechanized coal mining face coal mining machine positioning mechanism

Abstract

The utility model relates to the technical field of coal mining machine positioning, and discloses a fully mechanized coal mining face coal mining machine positioning mechanism which comprises a coal mining machine, a traction part, an adjusting arm and a smashing wheel are arranged on the front side and the rear side of the coal mining machine respectively, the adjusting arm is hinged to the traction part and turns over up and down through the traction part, and the smashing wheel is rotationally arranged on the adjusting arm. The two crushing wheels are arranged on the same side and are used for mining coal on a working face; the coal mining machine further comprises a positioning feedback structure and a horizontal positioning structure; the positioning feedback structure is arranged upwards, is arranged at the front upper part of the front side crushing wheel through the horizontal positioning structure, and controls the front side adjusting arm to adjust downwards after being propped against the top wall; an anti-collision structure is avoided, and hard collision between the positioning feedback structure and the coal seam is reduced. Compared with the prior art, the cutting device has the advantages that the front side of a mining point of a fully mechanized coal mining face is detected in advance through a mechanical structure, the cutting part is adjusted according to detection, a cutter is prevented from being damaged by collision, and the cutting device is more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of coal mining machine positioning technology, specifically to a positioning mechanism for a coal mining machine in a fully mechanized mining face. Background Technology

[0002] A coal mining machine mainly consists of an electric motor, a traction unit, a cutting unit, and auxiliary devices. The electric motor drives the two cutting units and the traction unit respectively through output shafts at both ends. The coal mining machine is one of the important pieces of equipment for achieving mechanization and modernization in coal mine production. It is mainly used in longwall mining faces, where the working mechanism breaks the coal off the coal seam and loads it into the face conveyor, realizing continuous coal breaking and loading processes.

[0003] Most existing coal mining machines are equipped with three-dimensional real-time monitoring systems to locate them within the coal mine and prevent the cutting section from colliding with the rock strata and causing damage. However, the environment inside the coal mine is quite complex, making it difficult to completely determine the geological conditions of the track route through the three-dimensional real-time monitoring system, which still poses a significant risk. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned technical difficulties and provide a positioning mechanism for a coal mining machine in a fully mechanized mining face. This mechanism uses a mechanical structure to detect the front side of the mining point of the fully mechanized mining face in advance and adjusts the cutting part according to the detection to avoid damage to the cutting tools.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A positioning mechanism for a fully mechanized coal mining machine includes a coal mining machine with wheels at its bottom, slidably mounted on a track. A traction unit, an adjusting arm, and a crushing wheel are respectively located on its front and rear sides. The adjusting arm is hinged to the traction unit and rotates up and down via the traction unit. The crushing wheel is rotatably mounted on the adjusting arm, and both crushing wheels are positioned on the same side for mining coal at the working face. The mechanism also includes:

[0007] Positioning feedback structure and horizontal positioning structure; the positioning feedback structure is arranged upward and is set above and in front of the front crushing wheel through the horizontal positioning structure, and after it comes into contact with the top wall, it controls the front adjusting arm to adjust downward.

[0008] The collision avoidance structure is installed on the positioning feedback structure to reduce hard collisions between the positioning feedback structure and the coal seam.

[0009] As an improvement, the horizontal positioning structure includes a parallel rod, a vertical rod, and a horizontal rod; the vertical rod is arranged vertically, with its top positioned directly behind the front crushing wheel and movably sleeved on the protrusion formed on the corresponding adjusting arm; the parallel rod is arranged parallel to the adjusting arm, with one end hinged to the bottom of the adjusting arm and the other end hinged to the front traction part; the horizontal rod is arranged perpendicular to the vertical rod, and its rear end is connected and fixed to the top of the vertical rod.

[0010] As an improvement, the horizontal positioning structure includes a parallel rod, a vertical rod, and a horizontal rod; the vertical rod is arranged vertically, with its top positioned directly behind the front crushing wheel and movably sleeved on the protrusion formed on the corresponding adjusting arm; the parallel rod is arranged parallel to the adjusting arm, with one end hinged to the bottom of the adjusting arm and the other end hinged to the front traction part; the horizontal rod is arranged perpendicular to the vertical rod, and its rear end is connected and fixed to the top of the vertical rod.

[0011] As an improvement, the collision avoidance structure includes a transverse spring, a roller, a positioning rod, and a ball bearing; the positioning rod is arranged transversely from left to right and one end is movably sleeved in the top of the feedback rod to form a sleeve opening, and the other end is rolled with a ball bearing, and a stepped surface is formed in the middle and is connected to the top of the feedback rod by a transverse spring; the roller is movably sleeved outside the positioning rod.

[0012] The advantages of this utility model compared with the prior art are as follows: This utility model uses a mechanical structure to detect the front side of the mining point of the fully mechanized mining face in advance, and adjusts the cutting part according to the detection, so as to avoid damage to the cutting tools, extend the service life of the coal mining machine, and make it more convenient to use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0014] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0015] Figure 3 This is a partial structural schematic diagram of the present invention.

[0016] Figure 4 This is a schematic diagram of the positioning feedback structure of this utility model.

[0017] Figure 5 This is a cross-sectional schematic diagram of the positioning feedback structure of this utility model.

[0018] As shown in the figure: 1. Main body of the coal mining machine; 2. Traction unit; 3. Adjusting arm; 4. Crushing wheel; 5. Wheel; 6. Track; 7. Cylinder; 8. Hinge plate; 9. Parallel rod; 10. Vertical rod; 11. Horizontal rod; 12. Sleeve; 13. Feedback rod; 14. Limit ring; 15. Longitudinal spring; 16. Pressure sensor; 17. Positioning rod; 18. Drum; 19. Ball bearing; 20. Transverse spring. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] A positioning mechanism for a coal mining machine in a fully mechanized longwall face, such as Figure 1 , Figure 2 As shown, it specifically includes:

[0022] The main body 1 of the coal mining machine has wheels 5 at its bottom, which are slidably mounted on a track 6. A traction unit 2, an adjusting arm 3, and a crushing wheel 4 are respectively mounted on the front and rear sides. The adjusting arm 3 is hinged to the traction unit 2. A cylinder 7 is mounted on the traction unit 2. One end of the cylinder 7 is hinged to the traction unit 2, and the other end is hinged to the bottom of the adjusting arm 3 to form a hinge plate 8. After the cylinder 7 extends or retracts, the adjusting arm 3 flips up and down to adjust the height of the crushing wheel 4. The crushing wheel 4 is rotatably mounted on the adjusting arm 3, and the two crushing wheels 4 are mounted on the same side and mine coal at the working face. The main body 1 of the coal mining machine slides on the track 6 through the traction unit 2, and the crushing wheel 4 is connected to the motor of the main body 1 of the coal mining machine through the gear set inside the adjusting arm 3 to rotate.

[0023] Horizontal positioning structure such as Figure 3 As shown, it includes a parallel rod 9, a vertical rod 10, and a horizontal rod 11. The vertical rod 10 is arranged vertically, with its top positioned directly behind the front crushing wheel 4 and movably sleeved on the protrusion formed on the corresponding adjusting arm 3. The parallel rod 9 is arranged parallel to the adjusting arm 3, with one end hinged to the bottom of the adjusting arm 3 and the other end hinged to the front traction part 2. The horizontal rod 11 is arranged perpendicular to the vertical rod 10, with its rear end connected and fixed to the top of the vertical rod 10 and its front end forming a sleeve.

[0024] Positioning feedback structures and collision avoidance structures, such as Figure 4 , Figure 5As shown, the positioning feedback structure includes a sleeve 12, a feedback rod 13, and a pressure sensor 16. The sleeve 12 is vertically arranged with its opening facing upwards and is fitted and fixed inside the front end of the horizontal rod 11. The pressure sensor 16 is located at the bottom inside the sleeve 12. A limit ring 14 is fixed on the inner wall of the sleeve 12. The feedback rod 13 is movably fitted inside the sleeve 12, and a stepped surface is formed on its side wall corresponding to the limit ring 14. The stepped surface and the limit ring 14 are connected by a longitudinal spring 15. The bottom of the feedback rod 13 passes through the limit ring 14 and is clearance-fitted with the top of the pressure sensor 16. The collision avoidance structure includes a transverse spring 20, a roller 18, a positioning rod 17, and a ball bearing 19. The positioning rod 17 is arranged transversely on the left and right sides above the front crushing wheel 4, and one end is movable. The roller 18 is fitted into the top of the feedback rod 13 to form a sleeve, and a ball bearing 19 is rolled at the other end. A stepped surface is formed in the middle and it is connected to the top of the feedback rod 13 by a transverse spring 20. The roller 18 is movably fitted outside the positioning rod 17. When the crushing wheel 4 extends into the coal seam for mining, the positioning rod 17 abuts against the fully mechanized mining face, and the ball bearing 19 slides on the fully mechanized mining face. As the shape of the fully mechanized mining face changes, the positioning rod 17 compresses the transverse spring 20 and moves back and forth. When the mine roadway turns downward, the positioning rod 17 contacts the top rock layer, and the roller 18 rolls. At the same time, the feedback rod 13 moves down, presses the pressure sensor 16, transmits the top contact signal, and controls the front cylinder 7 to contract, causing the front crushing wheel 4 to move down and avoid the top rock layer.

[0025] In the specific implementation of this embodiment:

[0026] This novel design is installed on a coal mining machine, with the front crushing wheel 4 crushing coal above and the rear crushing wheel 4 crushing coal below, thereby expanding the coal mining area of ​​the fully mechanized mining face. After the front crushing wheel 4 extends into the coal seam for mining, the positioning rod 17 abuts against the fully mechanized mining face, and the ball bearing 19 slides on the fully mechanized mining face. As the shape of the fully mechanized mining face changes, the positioning rod 17 compresses the transverse spring 20 and moves back and forth. When the mine roadway turns downward, the positioning rod 17 contacts the top rock layer, and the roller 18 rolls. At the same time, the feedback rod 13 moves down, presses the pressure sensor 16, transmits the top contact signal, and controls the front cylinder 7 to contract, causing the front crushing wheel 4 to move down and avoid the top rock layer.

[0027] When the crushing wheel 4 extends into the coal seam for mining, the positioning rod 17 abuts against the fully mechanized mining face, and the ball bearing 19 slides on the fully mechanized mining face. As the shape of the fully mechanized mining face changes, the positioning rod 17 compresses the transverse spring 20 and moves back and forth. When the mine roadway turns downward, the positioning rod 17 contacts the top rock layer, and the roller 18 rolls. At the same time, the feedback rod 13 moves down, presses the pressure sensor 16, transmits the top contact signal, and controls the front cylinder 7 to contract, causing the front crushing wheel 4 to move down and avoid the top rock layer.

[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A positioning mechanism for a fully mechanized coal mining face, comprising a main body (1) of the coal mining machine, with wheels (5) at its bottom and slidably mounted on a track (6), and a traction unit (2), an adjusting arm (3), and a crushing wheel (4) respectively mounted on the front and rear sides, wherein the adjusting arm (3) is hinged to the traction unit (2) and rotates up and down through the traction unit (2), and the crushing wheel (4) is rotatably mounted on the adjusting arm (3), and the two crushing wheels (4) are mounted on the same side and mined coal at the working face, characterized in that, Also includes: Positioning feedback structure and horizontal positioning structure; the positioning feedback structure is arranged upward and set above the front crushing wheel (4) through the horizontal positioning structure, and after contacting the top wall, it controls the front adjusting arm (3) to adjust downward. The collision avoidance structure is installed on the positioning feedback structure to reduce hard collisions between the positioning feedback structure and the coal seam.

2. The positioning mechanism for a fully mechanized coal mining machine according to claim 1, characterized in that: The horizontal positioning structure includes a parallel rod (9), a vertical rod (10), and a horizontal rod (11). The vertical rod (10) is arranged vertically, with its top positioned directly behind the front crushing wheel (4) and movably sleeved on the protrusion formed on the corresponding adjusting arm (3). The parallel rod (9) is arranged parallel to the adjusting arm (3), with one end hinged to the bottom of the adjusting arm (3) and the other end hinged to the front traction part (2). The horizontal rod (11) is arranged perpendicular to the vertical rod (10), and its rear end is connected and fixed to the top of the vertical rod (10).

3. The positioning mechanism for a fully mechanized coal mining machine according to claim 2, characterized in that: The positioning feedback structure includes a sleeve (12), a feedback rod (13), and a pressure sensor (16). The sleeve (12) is vertically arranged with its opening facing upward and is fixed to the front end of the horizontal rod (11). The pressure sensor (16) is set at the bottom inside the sleeve (12). A limit ring (14) is fixed on the inner wall of the sleeve (12). The feedback rod (13) is movably sleeved inside the sleeve (12), and a stepped surface is formed on the side wall corresponding to the limit ring (14). After the stepped surface and the limit ring (14) are connected by a longitudinal spring (15), the bottom of the feedback rod (13) passes through the limit ring (14) and is clearance-fitted with the top of the pressure sensor (16).

4. The positioning mechanism for a fully mechanized coal mining machine according to claim 3, characterized in that: The collision avoidance structure includes a transverse spring (20), a positioning rod (17), and a ball bearing (19). The positioning rod (17) is arranged transversely from left to right, with one end movably sleeved in the top of the feedback rod (13) to form a sleeve, and the other end is provided with a ball bearing (19). A stepped surface is formed in the middle and it is connected to the top of the feedback rod (13) through the transverse spring (20).

5. The positioning mechanism for a fully mechanized coal mining machine according to claim 4, characterized in that: It also includes a roller (18), which is movably sleeved outside the positioning rod (17).

6. The positioning mechanism for a fully mechanized coal mining machine according to claim 1, characterized in that: A cylinder (7) is provided on the traction part (2), and one end of the cylinder (7) is hinged to the traction part (2), and the other end is hinged to the bottom of the adjusting arm (3) to form a hinge plate (8).

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