A kind of cantilever type coal mine heading machine with loading mechanism

Abstract

The application discloses a kind of loading mechanism for cantilever type coal mine heading machine, comprising: machine body, the machine body is movably connected with connecting seat by telescopic link, the connecting seat is connected with connecting arm by movable seat, the connecting arm is connected with spade plate, the bottom of the machine body is connected with rear conveyor belt.The loading mechanism for cantilever type coal mine heading machine, the end of front conveyor belt is freely rotated above rear conveyor belt, expands the range of action of conveyor belt, so that spade plate can be more freely operated, shortens the time of cleaning coal in mine after cutting ends, improves heading and coal mining efficiency, secondly, under the action of material hopper, it can be ensured that the direction of coal movement is guided under the condition that the up-down interval of front conveyor belt and rear conveyor belt is very small, expands the range of spade plate moving forward and backward, so that spade plate can move in a larger range.

Description

Technical Field

[0001] This invention belongs to the technical field of coal mining equipment, specifically relating to a loading mechanism for a cantilever coal mine tunneling machine. Background Technology

[0002] When a cantilever coal mine tunneling machine is working, it breaks the coal through the cutting section to separate it from the ore vein. Then, the coal is scooped up by the shovel plate, and the scraper on the shovel plate scrapes the coal onto the conveyor belt in the middle of the shovel plate. The conveyor belt passes through the machine body and transports the coal to the transport vehicle or other transport equipment behind the machine body.

[0003] During tunneling, the machine body does not move when the cutting section is working. When a section is broken, the shovel section moves with the machine body to scoop up and transport the broken coal. That is, the cutting section and the shovel section operate alternately. When the shovel section is stationary, it is impossible to transport coal that falls outside the range of the shovel section, which restricts work efficiency. Secondly, the movement of the shovel is not flexible, and coal that falls to the edge is not easy to scoop up. Summary of the Invention

[0004] To address the shortcomings of the aforementioned background technology, this invention provides a technical solution for a loading mechanism for a cantilever coal mine tunneling machine. The end of the front conveyor belt rotates freely above the rear conveyor belt, expanding the range of action of the conveyor belt, allowing the shovel section to operate more freely, shortening the time for cleaning coal in the mine tunnel after cutting, improving tunneling and coal mining efficiency, and solving the problems raised in the background technology.

[0005] This invention provides the following technical solution: a loading mechanism for a cantilever coal mine tunneling machine, comprising:

[0006] The machine body is movably connected to a connecting seat via a telescopic rod. The connecting seat is connected to a connecting arm via a movable seat. The connecting arm is connected to a shovel plate. A rear conveyor belt is connected to the bottom of the machine body.

[0007] The shovel plate section has a front conveyor belt connected inside. The other end of the front conveyor belt is movably connected to the connecting seat via a connecting plate. The connecting plate and the movable seat are fixedly connected to the same rotating shaft. Rear hydraulic rods are provided between the two sides of the connecting plate or the two sides of the movable seat and the machine body. The axis of the rotating shaft of the connecting plate and the movable seat is within the symmetry plane of the rear conveyor belt and the symmetry plane of the front conveyor belt. The width of the front conveyor belt is smaller than the width of the rear conveyor belt.

[0008] Furthermore, the connecting arm and the shovel plate are hinged together, and front hydraulic rods are provided between the two sides of the connecting arm and the shovel plate. The front conveyor belt is provided with a flexible section, which allows the front conveyor belt to bend slightly.

[0009] Furthermore, a material conveying hopper is provided at the bottom end of the front conveyor belt, and a guide hopper inclined in the direction of conveying the rear conveyor belt is provided at the bottom of the material conveying hopper. The material conveying hopper is fixedly connected to the connecting seat and moves with the connecting seat. The axis of the material conveying hopper is collinear with the rotating shaft on the connecting plate and the movable seat.

[0010] Furthermore, the front conveyor belt is inclined upwards towards the tail of the machine body, and the rear conveyor belt is horizontally positioned between the machine body and the shovel plate section.

[0011] Furthermore, the guide bucket is elastic, the bottom of the guide bucket is provided with extrusion rollers, and the rear conveyor belt has a linear array of baffles.

[0012] Furthermore, the machine body is connected to a cutting section via a rotating part, and a rear angle monitor is provided between the rotating part and the machine body. A front angle monitor is provided between the rotating shaft of the connecting plate and the movable seat and the connecting seat. The front angle monitor and the rear angle monitor are connected to a controller, which determines the included angle α between the shovel section and the cutting section, and then determines whether the coal cut by the shovel section can be piled on the shovel section.

[0013] Furthermore, the rear hydraulic rod has two automatic extension amounts, corresponding to the maximum rotation angle and maximum forward movement of the connecting plate and the movable seat, respectively. When the included angle α is greater than the set value, the controller controls the lifting hydraulic rod to raise the connecting arm, and then controls the rear hydraulic rod on the side away from the cutting part to adjust to the extension amount corresponding to the maximum rotation angle. After the front hydraulic rod on the side closer to the cutting part is adjusted to the maximum extension amount, the shovel plate part is in the same direction as the initial direction when it is terminated. Then, the connecting arm is lowered by controlling the lifting hydraulic rod, and finally the two rear hydraulic rods are controlled to extend to the extension amount corresponding to the maximum forward movement.

[0014] Beneficial effects:

[0015] 1. The loading mechanism of this cantilever coal mine tunneling machine allows the end of the front conveyor belt to rotate freely above the rear conveyor belt, expanding the range of action of the conveyor belt and enabling the shovel section to operate more freely. That is, without affecting the operation and transportation of the cutting section, the shovel section can move freely and flexibly, actively shoveling up and transporting coal that falls on the edge of the mine roadway, shortening the time for cleaning coal in the mine roadway after cutting, and improving tunneling and coal mining efficiency.

[0016] 2. The loading mechanism of this cantilever coal mine tunneling machine, under the action of the conveying bucket, can ensure the direction of coal movement even when the vertical distance between the front and rear conveyor belts is very small, and expand the range of forward and backward movement of the shovel section, allowing the shovel section to move in a larger range. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a front view of the structure of the present invention;

[0019] Figure 3 For the present invention Figure 2 Enlarged view of A in the middle;

[0020] Figure 4 This is a schematic diagram of the material conveying hopper in this invention;

[0021] Figure 5 This is a schematic diagram showing the initial connection between the shovel plate and the machine body in this invention;

[0022] Figure 6 This is a schematic diagram showing the connection between the shovel plate and the machine body during adjustment in this invention;

[0023] Figure 7 This is a schematic diagram showing the connection between the shovel plate and the machine body at the end of the adjustment process in this invention.

[0024] In the diagram: 1. Machine body; 2. Shovel plate; 3. Connecting arm; 4. Front conveyor belt; 5. Rear conveyor belt; 6. Connecting seat; 7. Connecting plate; 8. Movable seat; 9. Telescopic rod; 10. Rear hydraulic rod; 11. Feeding hopper; 12. Front hydraulic rod; 13. Lifting hydraulic rod; 14. Flexible section; 15. Guide hopper; 16. Extrusion roller; 17. Front angle monitor; 18. Rear angle monitor; 19. Cutting section. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1 and Figure 2 A loading mechanism for a cantilever coal mine tunneling machine, comprising:

[0027] The machine body 1 has a walking track on its top and a cutting section on its top. The machine body 1 is movably connected to a connecting seat 6 via a telescopic rod 9. The top of the machine body 1 has a sliding hole corresponding to the connecting seat 6. The telescopic rod 9 moves within the connecting seat 6, restricting the movement of the connecting seat 6 so that it can only move back and forth. The connecting seat 6 is connected to a connecting arm 3 via a movable seat 8. The connecting arm 3 is connected to the shovel plate 2. With the connecting seat 6 as the fulcrum, the movable seat 8 drives the shovel plate 2 to move left and right or up and down. A lifting hydraulic rod 13 is provided between the connecting arm 3 and the connecting seat 6. The lifting hydraulic rod 13 extends and retracts, driving the shovel plate 2 to move up and down. The movable seat 8 and the connecting seat 6 rotate relative to each other, driving the shovel plate 2 to move left and right. A rear conveyor belt 5 is connected to the bottom of the machine body 1. The rear conveyor belt 5 passes through the machine body 1 and transports coal to the rear transport device.

[0028] The shovel section 2 has a front conveyor belt 4 internally connected to it. The other end of the front conveyor belt 4 is movably connected to the connecting seat 6 via a connecting plate 7. The connecting seat 6 is fixedly connected to the top of the side baffles of the front conveyor belt 4, without affecting coal transport. The connecting plate 7 and the movable seat 8 are fixedly connected to the same rotating shaft, which is movably connected to the connecting seat 6. Rear hydraulic rods 10 are provided between the connecting plate 7 and the machine body 1 on both sides of the connecting plate 7 or the movable seat 8. The extension and retraction of one rear hydraulic rod 10 drives the connecting plate 7 and the movable seat 8 to rotate. The rear hydraulic rod 10 on the side rotates simultaneously to drive the connecting seat 6 to move back and forth. The top of the shovel plate part 2 is equipped with a rotating scraper. The drive motors of the front conveyor belt 4 and the scraper are both located inside the shovel plate part 2. The axes of the connecting plate 7 and the movable seat 8 are in the plane of symmetry of the rear conveyor belt 5 and the plane of symmetry of the front conveyor belt 4. The width of the front conveyor belt 4 is smaller than the width of the rear conveyor belt 5, so that whether the shovel plate part 2 and the front conveyor belt 4 rotate or move back and forth, the coal conveyed by the front conveyor belt 4 falls onto the rear conveyor belt 5 through the conveying hopper 11.

[0029] The connecting arm 3 and the shovel plate 2 are hinged together. Both sides of the connecting arm 3 and the shovel plate 2 are provided with front hydraulic rods 12, which allows the shovel plate 2 to swing left and right. The front conveyor belt 4 is provided with a flexible section 14, which allows the front conveyor belt 4 to bend slightly. The left and right movement of the shovel plate 2 improves the flexibility of active shoveling. For example, the shovel plate 2 can be placed close to the corner of the wall when the connecting arm 3 is tilted.

[0030] The front conveyor belt 4 has a hopper 11 at its bottom end. The coal conveyed by the front conveyor belt 4 falls into the hopper 11 and finally onto the rear conveyor belt 5. The bottom of the hopper 11 has a guide bucket 15 that is inclined towards the conveying direction of the rear conveyor belt 5. The hopper 11 is fixedly connected to the connecting seat 6 and moves with the connecting seat 6. The axis of the hopper 11 is collinear with the rotating shaft on the connecting plate 7 and the movable seat 8. When the front conveyor belt 4 rotates, it rotates around the rear hydraulic rod 10. The coal always falls into the hopper 11. The hopper 11 can reduce the impact force of the falling coal on the rear conveyor belt 5. On the other hand, it allows the end of the front conveyor belt 4 to move outside the range of the front conveyor belt 4, increasing the range of movement of the shovel plate 2.

[0031] The front conveyor belt 4 is inclined upward toward the tail of the machine body 1, and the rear conveyor belt 5 is horizontally positioned between the machine body 1 and the shovel plate 2, so that the overlapping position of the front conveyor belt 4 and the rear conveyor belt 5 forms a sufficiently large height difference, which facilitates the installation of the material hopper 11.

[0032] Please see Figure 3 and Figure 4 The guide bucket 15 is elastic, and the bottom of the guide bucket 15 is equipped with a squeezing roller 16. Coal falls into the conveying bucket 11. Due to the elasticity of the guide bucket 15, it will fall down at a large angle and accumulate on the rear conveyor belt 5. The rear conveyor belt 5 has a linear array of baffles. When the baffles come into contact with the squeezing roller 16, they lift the squeezing roller 16 and push the coal in the guide bucket 15 to move and squeeze out the coal. Even if the space between the front conveyor belt 4 and the rear conveyor belt 5 is narrow, the conveying bucket 11 can be set in it and the coal can be conveyed normally. At the same time, the squeezing roller 16 also bears the wear between the squeezing roller 16 and the rear conveyor belt 5.

[0033] Please see Figure 1 The machine body 1 is connected to the cutting part 19 via a rotating part. A rear angle monitor 18 is provided between the rotating part and the machine body 1. A front angle monitor 17 is provided between the rotating shaft of the connecting plate 7 and the movable seat 8 and the connecting seat 6. The front angle monitor 17 and the rear angle monitor 18 are connected to a controller. The front angle monitor 17 and the rear angle monitor 18 are used to record the angle change of the shovel plate part 2, thereby determining the included angle α between the shovel plate part 2 and the cutting part 19, and determining whether the coal cut by the shovel plate part 2 can fall on the shovel plate part 2.

[0034] The rear hydraulic rod 10 has two automatic extension values, corresponding to the maximum rotation angle and maximum forward movement of the connecting plate 7 and the movable seat 8, respectively. When the included angle α exceeds the set value, the controller controls the lifting hydraulic rod 13 to raise the connecting arm 3. Then, the rear hydraulic rod 10 on the side away from the cutting section 19 is adjusted to the extension value corresponding to the maximum rotation angle. After the front hydraulic rod 12 on the side closer to the cutting section 19 is adjusted to the maximum extension value, the shovel plate 2 terminates with the initial direction aligned with the tunneling direction. Then, the connecting arm 3 is lowered by controlling the lifting hydraulic rod 13. Finally, the two rear hydraulic rods 10 are controlled to extend to the extension value corresponding to the maximum forward movement, shoveling coal forward. Please refer to [link to relevant documentation]. Figures 5-7 This demonstrates the process of adjusting the shovel plate 2;

[0035] This embodiment has two operating modes: manual and semi-automatic. For the operator, it is impossible to do two things at once. In manual mode, two operators are required: one controls the cutting part 19 to cut the coal, and the other controls the shovel part 2 to clean and transport the cut coal. In semi-automatic mode, the shovel part 2 is automatically controlled. When the shovel part 2 stops, the coal can fall directly into the area of ​​the shovel part 2, improving the conveying efficiency during cutting.

[0036] The working principle and workflow of this invention:

[0037] During the tunneling process, in semi-automatic mode, the cutting section 19 cuts the coal, which falls into the shovel section 2 and is transported to the rear transport device via the front conveyor belt 4 and the rear conveyor belt 5. As the cutting section expands beyond the range where the coal can directly fall into the shovel section 2, the connecting arm 3 is raised, and the shovel section 2 rotates around the hinge point with the connecting arm 3. The movable seat 8 and the connecting plate 7 also rotate, causing the shovel section 2 to move laterally. After moving by a set amount, the connecting arm 3 falls, and the telescopic rod 9 extends, moving the shovel section 2 to the optimal position.

[0038] When the shovel plate section 2 moves, the front conveyor belt 4 rotates synchronously with the movable seat 8 through the connecting plate 7. When the shovel plate section 2 rotates, the front conveyor belt 4 bends slightly to adapt to the rotation of the shovel plate section 2. The coal in the front conveyor belt 4 always falls into the conveying hopper 11 and is then transported to the rear conveyor belt 5 through the conveying hopper 11 to the rear transportation equipment.

[0039] In manual mode, another person controls the shovel section 2 to scoop up coal in the mine channel at any angle and lower it to clear the cut coal in a timely manner.

Claims

1. A loading mechanism for a cantilever coal mine tunneling machine, characterized in that, include: The machine body (1) is movably connected to a connecting seat (6) via a telescopic rod (9). The connecting seat (6) is connected to a connecting arm (3) via a movable seat (8). The connecting arm (3) is connected to the shovel plate part (2). The bottom of the machine body (1) is connected to a rear conveyor belt (5). The shovel plate section (2) is internally connected to a front conveyor belt (4). The other end of the front conveyor belt (4) is movably connected to a connecting seat (6) via a connecting plate (7). The connecting plate (7) and the movable seat (8) are fixedly connected to the same rotating shaft. Rear hydraulic rods (10) are provided between the two sides of the connecting plate (7) or the two sides of the movable seat (8) and the machine body (1). The axis of the rotating shaft of the connecting plate (7) and the movable seat (8) lies within the symmetry plane of the rear conveyor belt (5) and the symmetry plane of the front conveyor belt (4). The width of the front conveyor belt (4) is smaller than the width of the rear conveyor belt (5). The connecting arm (3) and the shovel plate (2) are hinged together. Front hydraulic rods (12) are provided between both sides of the connecting arm (3) and the shovel plate (2). A flexible section (14) is provided on the front conveyor belt (4) so ​​that the front conveyor belt (4) can be bent slightly. The bottom end of the front conveyor belt (4) is provided with a feeding hopper (11), and the bottom of the feeding hopper (11) is provided with a guide hopper (15) inclined in the conveying direction of the rear conveyor belt (5). The feeding hopper (11) is fixedly connected to the connecting seat (6) and moves with the connecting seat (6). The axis of the feeding hopper (11) is collinear with the rotating shaft on the connecting plate (7) and the movable seat (8). The front conveyor belt (4) is inclined upward toward the tail of the machine body (1), and the rear conveyor belt (5) is horizontally positioned between the machine body (1) and the shovel plate (2).

2. The loading mechanism for a cantilever coal mine tunneling machine according to claim 1, characterized in that, The guide bucket (15) is elastic, and the bottom of the guide bucket (15) is provided with a feeding roller (16), and the rear conveyor belt (5) has a linear array of baffles.

3. The loading mechanism for a cantilever coal mine tunneling machine according to claim 1, characterized in that: The machine body (1) is connected to the cutting part (19) via a rotating part. A rear angle monitor (18) is provided between the rotating part and the machine body (1). A front angle monitor (17) is provided between the rotating shaft of the connecting plate (7) and the movable seat (8) and the connecting seat (6). The front angle monitor (17) and the rear angle monitor (18) are connected to a controller. The controller determines the included angle α between the shovel plate part (2) and the cutting part (19), and then determines whether the coal cut by the shovel plate part (2) can be piled on the shovel plate part (2).

4. The loading mechanism for a cantilever coal mine tunneling machine according to claim 1, characterized in that: The rear hydraulic rod (10) has two automatic extension amounts, corresponding to the maximum rotation angle and maximum forward movement of the connecting plate (7) and the movable seat (8), respectively. When the included angle α between the shovel plate part (2) and the cutting part (19) is greater than the set value, the controller controls the lifting hydraulic rod (13) to raise the connecting arm (3), and then controls the rear hydraulic rod (10) on the side away from the cutting part (19) to adjust to the extension amount corresponding to the maximum rotation angle. After the front hydraulic rod (12) on the side close to the cutting part (19) is adjusted to the maximum extension amount, the shovel plate part (2) is in the same direction as the initial direction at the end. Then the connecting arm (3) is lowered by controlling the lifting hydraulic rod (13), and finally the two rear hydraulic rods (10) are controlled to extend to the extension amount corresponding to the maximum forward movement.

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