Cutting head protection equipment for coal mining tunneling

Abstract

The utility model discloses cutting head protection equipment for coal mining tunneling, which comprises a tunneling mechanical arm, and a coal mining cutting head is arranged on the tunneling mechanical arm; the tunneling mechanical arm is rotationally sleeved with a limiting lantern ring, a protection structure is installed on the limiting lantern ring, two adjusting gears are movably installed on the protection structure, and an adjusting structure is installed on the two adjusting gears. According to the utility model, one side of the coal mining cutting head can be blocked by the protective baffle and the movable baffles, splashed broken stones are blocked and prevented from hurting a driver, and when the angle between the tunneling mechanical arm and the coal mining cutting head is adjusted downwards, the two movable baffles can be recovered into the protective baffle by using the adjusting motor, so that the safety of the tunneling mechanical arm is improved. Therefore, the situation that when the tunneling mechanical arm inclines, the movable baffle makes contact with the mine ground, and consequently the moving angle of the tunneling mechanical arm is limited can be avoided, and meanwhile the protection baffle can still play a blocking and protecting role.

Description

Technical Field

[0001] This utility model relates to the field of mining tunneling machine technology, specifically to a cutting head protection device for coal mining tunneling. Background Technology

[0002] The cutting head is a rotating component on tunneling machinery that is directly used to cut rocks. It cuts rocks by rotating at high speed using its sharp blades or cutters, thereby achieving tunneling operations.

[0003] Chinese Patent Publication No. CN219864992U discloses a protective device for a cutting head used in coal mining, including a tunneling machine, a cutting head, and a protective assembly. The protective assembly includes a drive ring, a rotating rod, and a protective cover. The tunneling machine drives the cutting head to rotate and mine coal. The protective assembly is designed to prevent the flying debris and coal from the cutting head from injuring the driver. Specifically, before the tunneling machine starts the cutting head, the drive ring is activated. The drive ring slides on the tunneling machine, thereby driving the rotating rod to rotate. The rotating rod opens the protective cover. At this time, the cutting head is started to mine coal. During the mining process, the protective cover blocks the flying debris and coal from hitting the driver, thus preventing the driver from being injured by debris and coal. This solves the problem of driver injury caused by flying debris or coal during mining operations using traditional cutting heads.

[0004] In the aforementioned prior art, the protective plate can block the gravel and coal that splashes towards the driver during the operation of the cutting head, thus providing a protective effect. However, the protective plate is fixed in position. When the angle of the robotic arm is adjusted to allow the cutting head to drill through the mine surface or top, the protective plate will be the first to contact the ground, which will limit the movement angle of the robotic arm. Therefore, a cutting head protection device for coal mining and tunneling is needed to meet people's needs. Utility Model Content

[0005] The purpose of this utility model is to provide a protective device for a cutting head used in coal mining and tunneling, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a protective device for a cutting head used in coal mining and tunneling, comprising a tunneling robotic arm, wherein a coal cutting head is provided on the tunneling robotic arm; a limiting collar is rotatably sleeved on the tunneling robotic arm, a protective structure is installed on the limiting collar, two adjusting gears are movably installed on the protective structure, and adjusting structures are installed on the two adjusting gears; a connecting collar is fixedly installed on one side of the limiting collar, the connecting collar is rotatably sleeved on the tunneling robotic arm, and a flipping structure is installed on the connecting collar;

[0007] The protective structure includes a protective baffle, which is fixedly installed on a limiting collar. A recycling groove is provided inside the protective baffle, and two movable baffles are movably installed in the recycling groove. The two movable baffles are in contact with each other, and the protective baffle and the two movable baffles are all located on one side of the coal cutting head.

[0008] The adjustment structure includes two adjustment motors, both of which are fixedly installed on one side of the protective baffle. The output ends of the two adjustment motors are rotatably installed inside the protective baffle. The output ends of the two adjustment motors are respectively installed on one side of two adjustment gears. Arc-shaped racks are fixedly installed on both movable baffles, and the two arc-shaped racks mesh with the two adjustment gears respectively.

[0009] The flipping structure includes an auxiliary motor, which is fixedly mounted on a connecting collar. A connecting shaft is fixedly mounted on the output end of the auxiliary motor. The connecting shaft is rotatably mounted inside the connecting collar. A worm is fixedly sleeved on the connecting shaft. A fixed worm wheel is fixedly sleeved on the tunneling robot arm. The fixed worm wheel is rotatably mounted inside the connecting collar and meshes with the worm.

[0010] Preferably, an arc-shaped guide hole is provided on one side of the protective baffle, and two guide shafts are movably installed in the arc-shaped guide hole. The two guide shafts are respectively fixedly installed on one side of the two movable baffles.

[0011] Preferably, the connecting collar has an annular groove inside, and a guide ring is rotatably installed in the annular groove. The guide ring is fixedly installed on one side of the fixed worm gear.

[0012] Preferably, a limiting ring is rotatably installed inside the limiting collar, and the limiting ring is fixedly sleeved on the tunneling robot arm.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, the protective baffle and the movable baffle can block the flying gravel on one side of the coal cutting head, preventing the flying gravel from injuring the driver. When adjusting the angle between the tunneling robot arm and the coal cutting head downwards, the two movable baffles can be retracted into the protective baffle by the adjusting motor, thereby avoiding the movable baffle from contacting the mine ground when the tunneling robot arm tilts, thus limiting the movement angle of the tunneling robot arm. At the same time, the protective baffle can still play a protective role.

[0015] (2) By turning on the auxiliary motor, the angle and orientation of the protective baffle and the movable baffle can be adjusted. The movable baffle can be adjusted to the corresponding orientation according to the adjustment angle of the tunneling robot arm and the coal cutting head, so as to avoid collision and interference between the movable baffle and the mine sidewall. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a protective device for a cutting head used in coal mining and tunneling, as proposed in this utility model.

[0017] Figure 2 This is a side view of the protective device for a cutting head used in coal mining and tunneling, as proposed in this utility model.

[0018] Figure 3 This is a cross-sectional view of the protective baffle of a cutting head protection device for coal mining and tunneling proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the connecting collar of a protective device for a cutting head used in coal mining and tunneling, as proposed in this utility model.

[0020] Figure 5 This is a schematic diagram of the fixed worm gear structure of a protective device for a cutting head used in coal mining and tunneling, as proposed in this utility model.

[0021] In the diagram: 100, tunneling robotic arm; 101, coal cutting head; 200, limiting collar; 201, protective baffle; 202, recovery trough; 203, movable baffle; 300, adjusting gear; 301, adjusting motor; 302, arc-shaped rack; 303, arc-shaped guide hole; 304, guide shaft; 400, connecting collar; 401, auxiliary motor; 402, connecting shaft; 403, worm gear; 404, fixed worm wheel; 405, annular groove; 406, guide ring; 407, limiting ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: Please refer to Figure 1-5This utility model provides a technical solution: a protective device for a cutting head used in coal mining and tunneling, including a tunneling robotic arm 100, on which a coal cutting head 101 is provided; a limiting collar 200 is rotatably sleeved on the tunneling robotic arm 100, and a protective structure is installed on the limiting collar 200; two adjusting gears 300 are movably installed on the protective structure, and adjusting structures are installed on the two adjusting gears 300; a connecting collar 400 is fixedly installed on one side of the limiting collar 200, and the connecting collar 400 is rotatably sleeved on the tunneling robotic arm 100; a flipping structure is installed on the connecting collar 400. During the use of the tunneling robotic arm 100, the protective structure can be used to block flying debris; the adjusting structure can be used to adjust the protection range of the protective structure when the tunneling robotic arm 100 tilts downward, avoiding contact between the protective structure and the mine ground and thus preventing obstruction of the adjustment of the tunneling robotic arm 100; and the flipping structure can be used to flip and adjust the angle of the protective structure, so that it can be adjusted according to the angle of the tunneling robotic arm 100 during operation.

[0024] Furthermore, the protective structure includes a protective baffle 201, which is fixedly installed on the limiting collar 200. A recovery trough 202 is provided inside the protective baffle 201, and two movable baffles 203 are movably installed in the recovery trough 202. The two movable baffles 203 are in contact with each other. The protective baffle 201 and the two movable baffles 203 are all located on one side of the coal cutting head 101. The protective baffle 201 and the two movable baffles 203 after being deployed can block one side of the coal cutting head 101 and block the flying debris.

[0025] Furthermore, the adjustment structure includes two adjustment motors 301, both of which are fixedly installed on one side of the protective baffle 201. The output ends of the two adjustment motors 301 are rotatably installed inside the protective baffle 201. The output ends of the two adjustment motors 301 are respectively installed on one side of the two adjustment gears 300. Arc-shaped racks 302 are fixedly installed on the two movable baffles 203. The two arc-shaped racks 302 mesh with the two adjustment gears 300 respectively. The output ends of the adjustment motors 301 can drive the adjustment gears 300 to rotate. The rotating adjustment gears 300 can drive the movable baffles 203 to make circular motion around the limiting collar 200 through meshing with the arc-shaped racks 302. This can retract the movable baffles 203 into the recovery trough 202, avoiding obstruction and restriction by the movable baffles 203 when the coal cutting head 101 tilts downward to adjust its angle.

[0026] Furthermore, an arc-shaped guide hole 303 is provided on one side of the protective baffle 201. Two guide shafts 304 are movably installed in the arc-shaped guide hole 303. The two guide shafts 304 are respectively fixedly installed on one side of the two movable baffles 203. When the movable baffle 203 moves, it can drive the guide shafts 304 to slide in the arc-shaped guide hole 303, thereby restricting the movement direction of the movable baffle 203.

[0027] Example 2: As Figure 2-5 In order to adjust the position of the movable baffle 203 according to the tilt angle of the tunneling robot arm 100 during operation, so as to avoid the sidewall of the coal mine, a flipping structure is arranged on the connecting collar 400. The flipping structure includes an auxiliary motor 401, which is fixedly installed on the connecting collar 400. A connecting shaft 402 is fixedly installed on the output end of the auxiliary motor 401. The connecting shaft 402 is rotatably installed inside the connecting collar 400. A worm gear 403 is fixedly sleeved on the connecting shaft 402. A fixed worm wheel 404 is fixedly sleeved on the tunneling robot arm 100. The fixed worm wheel 404 is rotatably installed inside the connecting collar 400 and meshes with the worm gear 403. An annular groove 405 is opened inside the connecting collar 400. A guide ring 406 is rotatably installed in the annular groove 405 and fixedly installed on one side of the fixed worm wheel 404. On the side, a limiting ring 407 is rotatably installed inside the limiting collar 200. The limiting ring 407 is fixedly sleeved on the tunneling robot arm 100. When the auxiliary motor 401 is turned on, it drives the connecting shaft 402 to rotate, which in turn drives the worm 403 to rotate. Since the fixed worm wheel 404 is fixed on the tunneling robot arm 100, and the connecting collar 400 can rotate on the tunneling robot arm 100 and the fixed worm wheel 404, the worm 403 can rotate around the fixed worm wheel 404 through meshing during rotation. This causes the worm 403 to drive the connecting collar 400 to rotate. The rotating connecting collar 400 can drive the limiting collar 200 to rotate, which in turn drives the protective baffle 201 and the movable baffle 203 to rotate, adjusting the orientation and angle of the protective baffle 201 and the movable baffle 203. The remaining features are the same as in Embodiment 1.

[0028] The working principle is as follows: the protective baffle 201 and the two movable baffles 203 after being deployed are at an angle... Figure 1 and Figure 2In this state, it can block the flying debris on one side of the coal cutting head 101, preventing the operator from being injured by the flying debris during operation. When the angle of the tunneling robot arm 100 is adjusted and the coal cutting head 101 is tilted downwards, the adjustment motors 301 on both sides can be turned on. The output of the adjustment motor 301 can drive the adjustment gear 300 to rotate. The rotating adjustment gear 300 can drive the movable baffle 203 to make a circular motion around the limiting collar 200 through meshing with the arc rack 302, and finally retract the movable baffle 203 into the recovery tank 202. To prevent the coal cutting head 101 from being blocked and restricted by the movable baffle 203 when tilting downwards to adjust its angle, while the protective baffle 201 still provides protection, when it is necessary to adjust the angle of the tunneling arm 100 upwards so that the coal cutting head 101 tilts upwards, the auxiliary motor 401 can be turned on to drive the connecting shaft 402 to rotate, which in turn drives the worm gear 403 to rotate. Since the fixed worm wheel 404 is fixed on the tunneling arm 100, and the connecting collar 400 can rotate on the tunneling arm 100 and the fixed worm wheel 404, the worm gear 403 rotates. During the process, the worm 403 can mesh with the fixed worm wheel 404, causing it to rotate around the fixed worm wheel 404. This, in turn, causes the worm 403 to drive the connecting collar 400 to rotate on the tunneling robot arm 100 via the connecting shaft 402. Simultaneously, the connecting collar 400 rotates on the guide ring 406 through the annular groove 405, thus preventing misalignment between the connecting collar 400 and the fixed worm wheel 404. The continuously rotating connecting collar 400 can drive the limiting collar 200 to rotate, causing the limiting collar 200 to rotate on the restricting ring 407. The restricting ring 407 prevents misalignment. The position of the limit collar 200 on the tunneling robot arm 100 is offset. The continuously rotating limit collar 200 can drive the protective baffle 201 and the movable baffle 203 to rotate. The movable baffle 203 can be flipped upwards, and then the movable baffle 203 can be retrieved into the recovery trough 202 by the arc rack 302. This can avoid the top surface of the coal mine when the coal cutting head 101 is tilted upwards. Similarly, when it is necessary to adjust the angle of the coal cutting head 101 to be closer to the side wall of the coal mine, the same method can be used to adjust the angle of the protective baffle 201 and the position of the movable baffle 203.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective device for a cutting head used in coal mining and tunneling, comprising a tunneling robotic arm (100), wherein a coal cutting head (101) is provided on the tunneling robotic arm (100); characterized in that: A limiting collar (200) is rotatably sleeved on the tunneling robot arm (100). A protective structure is installed on the limiting collar (200). Two adjusting gears (300) are movably installed on the protective structure. An adjusting structure is installed on the two adjusting gears (300). A connecting collar (400) is fixedly installed on one side of the limiting collar (200). The connecting collar (400) is rotatably sleeved on the tunneling robot arm (100). A flipping structure is installed on the connecting collar (400). The protective structure includes a protective baffle (201), which is fixedly installed on a limiting collar (200). A recycling trough (202) is provided inside the protective baffle (201), and two movable baffles (203) are movably installed inside the recycling trough (202). The two movable baffles (203) are in contact with each other. The protective baffle (201) and the two movable baffles (203) are all located on one side of the coal cutting head (101). The adjustment structure includes two adjustment motors (301), both of which are fixedly installed on one side of the protective baffle (201). The output ends of the two adjustment motors (301) are rotatably installed inside the protective baffle (201). The output ends of the two adjustment motors (301) are respectively installed on one side of two adjustment gears (300). Arc-shaped racks (302) are fixedly installed on both movable baffles (203), and the two arc-shaped racks (302) mesh with the two adjustment gears (300) respectively. The flipping structure includes an auxiliary motor (401), which is fixedly mounted on a connecting collar (400). A connecting shaft (402) is fixedly mounted on the output end of the auxiliary motor (401). The connecting shaft (402) is rotatably mounted inside the connecting collar (400). A worm (403) is fixedly mounted on the connecting shaft (402). A fixed worm wheel (404) is fixedly mounted on the tunneling robot arm (100). The fixed worm wheel (404) is rotatably mounted inside the connecting collar (400). The fixed worm wheel (404) meshes with the worm (403).

2. The protective device for a cutting head used in coal mining and tunneling according to claim 1, characterized in that: An arc-shaped guide hole (303) is provided on one side of the protective baffle (201), and two guide shafts (304) are movably installed in the arc-shaped guide hole (303). The two guide shafts (304) are respectively fixedly installed on one side of the two movable baffles (203).

3. The protective device for a cutting head used in coal mining and tunneling according to claim 1, characterized in that: The connecting collar (400) has an annular groove (405) inside, and a guide ring (406) is rotatably installed in the annular groove (405). The guide ring (406) is fixedly installed on one side of the fixed worm gear (404).

4. The protective device for a cutting head used in coal mining and tunneling according to claim 1, characterized in that: The limiting collar (200) has a limiting ring (407) rotatably installed inside, and the limiting ring (407) is fixedly sleeved on the tunneling robot arm (100).

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