Bauxite mining heading machine with monitoring function and method

Abstract

The invention discloses a bauxite mining heading machine with a monitoring function, which comprises a cantilever type heading machine body, a wireless torsion stress strain gauge test module, an infrared camera and a high-definition camera, a cutting head connecting shaft of the heading machine body is rotatably connected into a telescopic part, the telescopic part is connected to a gearbox, and the gearbox is connected to the wireless torsion stress strain gauge test module. A wireless torsion stress strain gauge testing module is installed on the connecting shaft, the infrared camera and the high-definition camera are installed on the telescopic part through a hidden camera support, the rotary annular spraying pipe is fixedly connected to the rotary support and arranged outside the telescopic part in a horn shape, and the wireless torsion stress strain gauge testing module is installed on the wireless torsion stress strain gauge testing module. A plurality of spray headers are annularly arranged on the annular spray pipe in a staggered manner and face cutting teeth of the cutting head. Dust falling is effectively achieved, the water consumption is reduced, large-area spraying through water pressure is avoided, and better energy conservation and environment protection are achieved; and the problem that the tunneling energy consumption is increased due to tunneling under long-term large friction is solved, and energy conservation is achieved.

Description

Technical Field

[0001] The present invention relates to a bauxite mining roadheader with a monitoring function and a method, and particularly to an energy-saving and environment-friendly roadheader, belonging to the technical field of roadheaders. Background Art

[0002] During the existing underground bauxite mining process, a metal ore cantilever roadheader is used for mining. During the mining process, the cutting head is controlled to advance forward, and then it moves up and down and leans towards one side for excavation. However, the geological structure of bauxite is complex. When encountering a bauxite layer with a relatively high hardness during tunneling, the pick of the cutting head impacts the bauxite layer at high speed. Due to the sudden change in the hardness of the bauxite layer, under such a mutation condition, the pick will be damaged by high temperature, and even fall off and the machine will stop.

[0003] Moreover, during the tunneling process of the metal ore roadheader, the cutting teeth will be damaged due to the change in the hardness of the ore. A kind of underground bauxite mining device and its operation method disclosed in the Chinese patent application (application number: 2024104634813) discloses the use of multiple strip-shaped spray pipes arranged in a ring to achieve cooling, temperature reduction and dust reduction. However, this method also has the problem of incomplete spraying, resulting in poor cooling and dust reduction effects. It also discloses a method of using current mutation to monitor the torque change of the roadheader cutting head and the problem of cutting tooth damage of the roadheader. Since the change in current may also be caused by other reasons, it is easy to cause misjudgment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a bauxite mining roadheader with a monitoring function and a method, which can achieve better dust reduction and temperature reduction for the roadheader, make the roadheader more energy-saving and environment-friendly, accurately realize the torque change of the roadheader cutting head and the damage of the cutting teeth, and is beneficial to controlling the cutting head for safe cutting operation.

[0005] The technical solution adopted by the present invention is as follows: a bauxite mining roadheader with a monitoring function, including a cantilever-type roadheader body, a wireless torsional stress and strain gauge test module, an infrared camera, and a high-definition camera. The cantilever-type roadheader body is provided with a cutting head. The connecting shaft of the cutting head is rotatably connected to the telescopic part, and the inner part far from the end of the cutting head is connected to the output shaft of the gearbox. The telescopic part is connected to the gearbox at the end far from the cutting head. A wireless torsional stress and strain gauge test module for detecting its torsional stress is installed on the connecting shaft of the cutting head. The infrared camera and the high-definition camera are installed on the telescopic part through a concealed camera bracket. The infrared camera and the high-definition camera are respectively used to detect the temperature of the cutting teeth of the cutting head and the condition of broken teeth. It also includes an annular spray pipe. There are two annular spray pipes with different sizes, which are fixedly connected to the rotating bracket and arranged in a horn shape outside the telescopic part. The rotating bracket is rotatably connected to the outer surface of the telescopic part and is driven by a driving mechanism to rotate back and forth within 180 degrees. A plurality of spray heads are arranged annularly and staggeredly on the annular spray pipe, and the plurality of spray heads face the cutting teeth of the cutting head.

[0006] Furthermore, the above-mentioned bauxite mining roadheader with a monitoring function also includes a current sensor for the driving motor of the driving gearbox. The current sensor is used to monitor the change of the torsional moment of the cutting head.

[0007] Furthermore, the above-mentioned bauxite mining roadheader with a monitoring function also includes a monitoring and analysis module. The monitoring and analysis module obtains a judgment on the operating condition of the cutting head by fusing the detection situations of the current detection module, the wireless torsional stress and strain gauge test module, the infrared camera, and the high-definition camera.

[0008] Furthermore, the above-mentioned wireless torsional stress and strain gauge test module is connected to a thermoelectric power generation module. The thermoelectric power generation module is connected inside the cutting head, and the wireless torsional stress and strain test piece module is installed on the section of the connecting shaft inside the cutting head.

[0009] Furthermore, the above-mentioned wireless torsional stress and strain test piece module includes a stress and strain gauge and a control circuit board. Two stress and strain gauges are used, which are cross-mounted in the grooves provided on the connecting shaft and arranged at a 45° angle to the axis of the connecting shaft. The two are connected to the control circuit board. The control circuit board is fixedly connected in the groove. The groove is sealed by a sealing cover one. The control circuit board is connected to the thermoelectric power generation module through a cable. A sealing sleeve is provided at the place where the sealing cover one passes through the cable.

[0010] Further, the above camera bracket includes a camera mounting plate, a double-rod cylinder, and a second sealing cover. The camera mounting plate is fixedly connected to an infrared camera and a high-definition camera side by side. The camera mounting plate is fixedly connected to the mounting plates fixedly connected to the ends of the two cylinder rods of the double-rod cylinder through an L-shaped plate. The tail end of the cylinder block of the double-rod cylinder is rotationally connected to a concave cavity provided on the top surface of the telescopic part through a pitching shaft. The pitching shaft is connected to a pitching motor that drives its rotation. The pitching motor is installed in a motor slot on one side of the concave cavity. The second sealing cover covers the concave cavity.

[0011] Further, the above second sealing cover is connected to four connecting columns through four tension springs. The four connecting columns are symmetrically fixedly connected to the cylinder block of the double-rod cylinder. The second sealing cover includes a first-section sealing cover and a second-section sealing cover. The length of the first-section sealing cover is greater than that of the second-section sealing cover. The first-section sealing cover is hinged to the second-section sealing cover. The second-section sealing cover is hinged to the concave cavity at the end away from the cutting head. After the double-rod cylinder rotates and is located in the concave cavity, the first-section sealing cover can be elastically tightened on a sealing step provided at the cavity opening of the concave cavity, and the second-section sealing cover seals the cavity opening.

[0012] The operation method of a bauxite mining roadheader with a monitoring function is as follows: During the transverse cutting process of the roadheader controlling the cutting head, if the current sensor of the motor driving the rotation of the cutting head and the wireless torsional stress and strain gauge test module arranged on the connecting shaft respectively detect the inflection points of sudden changes in the current curve and torque, then control the feed rate of the cutting head to be halved and the rotational speed to increase by 20%. Control the annular spray pipe to rotate back and forth and spray spray-shaped water to cool the cutting teeth. If the current value and the torque of the cutting head are still twice that of normal cutting and maintain the set time, then continue to control the feed rate of the cutting head to be reduced by one-third and the rotational speed to be increased by 10%. The current sensor and the wireless torsional stress and strain gauge test module continue to detect the current magnitude and torque magnitude. The spraying conditions of the annular spray pipe and its rotation back and forth are maintained. When the current and torque meet the set range, then control the cutting to be carried out at this speed and feed rate. If the current and torque still do not meet the set range, then withdraw one-third of the cutting depth. The spraying conditions of the annular spray pipe and its rotation back and forth are maintained. If the current and torque respectively meet the corresponding set ranges, maintain the cutting in this state. If not, withdraw. Slowly rotate the cutting head, use an infrared camera to detect the temperature of the cutting head and cutting teeth, and use a high-definition camera to collect pictures of the cutting head. If the collected temperature is higher than the set value and the pictures taken by the high-definition camera are compared to confirm whether there are broken teeth, if so, stop the operation of the roadheader and repair the cutting teeth or replace the cutting head. The beneficial effects of the present invention are as follows: The effects of the present invention are as follows: (1)The present invention is provided with two annular spray pipes and spray heads arranged in a staggered manner, and sprays in coordination with the reciprocating rotation of the rotating bracket, which can effectively reduce dust, reduce water consumption, and avoid relying on water pressure to achieve large-area spraying, thus achieving better energy conservation and environmental protection; the real-time torque measurement combined with temperature monitoring can accurately realize the change of the resistance received by the cutting head, and then control the change of the corresponding cutting control parameters to improve the mining safety of the roadheader. By calibrating the broken teeth situation through the camera for the second time, the detection accuracy is improved, the tunneling safety is improved, and the problem of increased tunneling energy consumption caused by long-term tunneling under large friction is avoided, achieving energy conservation; (2)The combination of torque, temperature, and camera correction with temperature monitoring can further improve the detection accuracy; (3)The monitoring and analysis module automatically makes a comprehensive fusion judgment based on current, torque, temperature, and camera conditions, improving the judgment accuracy and reliability and enhancing the judgment and evaluation efficiency; (4)By setting up a thermoelectric power generation module to supply power to the infinite torsional stress and strain test piece module, the temperature generated by the cutting head is used for power generation to supply power to the test piece module, avoiding the interference effect caused by setting a power supply for the rotating cutting head, saving energy, and the thermoelectric power generation can also meet the power supply requirements; (5)Using two stress and strain gauges to measure torque can improve the measurement accuracy. In addition, by setting grooves, the occupation of the surface is avoided, which affects the use of the connecting shaft. The sealing cover is used for covering to avoid external influence, and the measurement stability and reliability can also be improved; (6)Hiding the camera in the concave cavity can effectively protect the camera, avoid damage to the camera caused by flying stones during the use of the cutting head, improve the use safety. The cylinder telescopic drive is adopted, which is convenient for controlling the height, and then covering different ranges of shooting. The pitching angle is controlled by the pitching motor, and then the best pitching angle is controlled; (7)Adopting a two-stage sealing cover in cooperation with four tension springs and connecting columns can realize the quick and reliable closing and sealing of the cavity, avoid interference, and realize automatic opening and closing during the rotation of the hydraulic cylinder, reducing power equipment, lowering costs, and saving energy; (8)By using the real-time mutual cooperation monitoring of current and torque, the force change of the cutting head can be accurately monitored, and then the corresponding control of the feed rate of the cutting head can be proposed, effectively avoiding damage caused by excessive force due to reasons such as the increase in the hardness of bauxite. The use safety of the cutting head is improved. After continuously changing the feed rate and feed depth multiple times and artificially improving, and reducing the speed, an infrared temperature camera is used for effective monitoring to detect the cutters with too high temperature, and the camera is used for secondary calibration to check whether there is damage to the cutters of the cutting head, and then an effective improvement method is proposed. The method for determining cutter damage is more accurate than pure current change after multiple calibrations. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of a bauxite mining roadheader with a monitoring function; Figure 2 It is a schematic top - view installation structure diagram of a wire torsional stress - strain gauge test module; Figure 3 It is a schematic side - view installation structure diagram of a wire torsional stress - strain gauge test module; Figure 4 It is a schematic side - view installation structure diagram of a camera; Figure 5 It is a schematic bottom - view installation structure diagram of a camera; Figure 6 It is a schematic installation structure diagram of a rotating bracket. Specific implementation mode

[0014] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0015] Embodiment 1: As Figures 1-6 , a bauxite mining roadheader with a monitoring function, including a cantilever - type roadheader body 1, a wireless torsional stress - strain gauge test module 2, an infrared camera 3, and a high - definition camera 4. The cantilever - type roadheader body 1 is provided with a cutting head 5. The connecting shaft 401 of the cutting head 5 is rotatably connected to the telescopic part 6, and the inner part far from the end of the cutting head 5 is connected to the output shaft of the gearbox 7. The telescopic part 6 is connected to the gearbox 7 at the end far from the cutting head 5. A wireless torsional stress - strain gauge test module 2 for detecting its torsional stress is installed on the connecting shaft 401 of the cutting head 4. The infrared camera 3 and the high - definition camera 4 are installed on the telescopic part 6 through a hidden camera bracket 8. The infrared camera 3 and the high - definition camera 4 are respectively used to detect the cutting tooth temperature and tooth breakage condition of the cutting head. It also includes an annular spray pipe 9. There are two annular spray pipes 9 with different sizes, which are fixedly connected to the rotating bracket 10 and are arranged in a horn - shaped position outside the telescopic part 6. The rotating bracket 10 is rotatably connected to the outer surface of the telescopic part 6 and is driven by a driving mechanism 12 to rotate back and forth within 180 degrees. A plurality of spray heads 11 are arranged in an annular and staggered manner on the annular spray pipe 9. The plurality of spray heads 11 face the cutting teeth of the cutting head 4. The present invention sets two annular spray pipes and staggered spray heads, and cooperates with the back - and - forth rotation of the rotating bracket for spraying, which can effectively reduce dust, reduce water consumption, and avoid relying on water pressure to achieve large - area spraying, achieving better energy conservation and environmental protection; real - time torque measurement combined with temperature monitoring can accurately realize the change of the resistance received by the cutting head, and then control the change of the corresponding cutting control parameters to improve the mining safety of the roadheader. And through the secondary calibration of the tooth breakage condition by the camera, the detection accuracy is improved, the tunneling safety is improved, and the problem of increased tunneling energy consumption caused by long - term large - friction tunneling is avoided, achieving energy conservation.

[0016] Among them, the driving mechanism 12 includes an annular gear 1201, a driving gear 1202, and a swing driving motor 1203. The annular gear 1201 is fixedly connected to the rotating bracket 10 and is located at one end away from the cutting head. The driving gear 1202 meshes with the annular gear 1201. The driving gear 1202 is fixedly connected to the motor shaft of the swing driving motor 1203. The swing driving motor 1203 is fixedly connected to the telescopic part 6 through a motor bracket 1204. The rotating bracket 10 is rotatably connected to the telescopic part 6 through a bearing 1205. The rotating bracket is driven by the swing driving motor to rotate within 180 degrees, with fast and stable driving. The rotating bracket 10 includes an inner ring 1001 and multiple bent pipes 1002. The inner ring 1001 is rotatably connected to the telescopic part 6 through a bearing 1205. The multiple bent pipes 1002 are circumferentially and uniformly fixedly connected to the inner ring 1001 and are bent towards the cutting head direction. The multiple bent pipes 1002 are fixedly connected to two annular spray pipes 9, and one of the bent pipes 1002 at the top serves as a water inlet pipe and is communicated with the two annular spray pipes 9. This bent pipe 1002 is connected to the pumped water supply hose. The bracket has stable and reliable support and serves as a water inlet pipe, reducing equipment complexity and cost, and rotating back and forth within a range of 180 degrees without affecting the layout of the water supply pipe.

[0017] In order to more precisely achieve torque calibration, the bauxite mining roadheader with a monitoring function further includes a current sensor for the driving motor of the driving gearbox 7. The current sensor is used to monitor the change of the torsional moment of the cutting head. The integration of torque, temperature, and camera correction with temperature monitoring can further improve the detection accuracy.

[0018] In order to comprehensively and automatically analyze and obtain the results of reliability and accuracy, the bauxite mining roadheader with a monitoring function further includes a monitoring and analysis module. The monitoring and analysis module fuses the detection situations of the current detection module, the wireless torsional stress and strain gauge test module 2, the infrared camera 3, and the high-definition camera 4 to obtain a judgment on the operating condition of the cutting head. Through the monitoring and analysis module, automatic fusion judgment is carried out based on current, torque, temperature, and camera conditions, improving the judgment accuracy and reliability and the judgment and evaluation efficiency.

[0019] For the convenience of power supply for the wireless torsional stress-strain test piece module, the wireless torsional stress-strain gauge test module 2 is connected to a thermoelectric power generation module 13. The thermoelectric power generation module is connected inside the cutting head 5. The wireless torsional stress-strain test piece module 2 is installed on the section of the connecting shaft 401 inside the cutting head 5. By setting the thermoelectric power generation module to supply power to the infinite torsional stress-strain test piece module, the thermoelectric power generation is carried out using the temperature generated by the cutting head to supply power to the test piece module, avoiding the interference effect caused by the power supply to the rotating cutting head, saving energy, and the thermoelectric power generation can also meet the power supply requirements. During the cutting process of the cutting head, high temperature will occur, and then the thermoelectric power generation module is arranged through this high temperature, which can meet the power supply requirements, reduce energy consumption and the structural complexity of wiring.

[0020] For the convenience of installation and accurate testing of the wireless torsional stress-strain test piece module, the wireless torsional stress-strain test piece module 2 includes a stress-strain gauge 201 and a control circuit board 202. Two stress-strain gauges 201 are used and are cross-pasted in the groove 203 provided on the connecting shaft 401 and arranged at a 45° angle to the axis of the connecting shaft 401. The two stress-strain gauges 201 are connected to the control circuit board 202 through spiral signal lines. The spiral signal lines can play a better role in protecting the connection points under vibration and avoid joint damage. The control circuit board 202 is fixedly connected in the groove 203. The groove 203 is sealed by a sealing cover 1 204. The control circuit board 202 is connected to the thermoelectric power generation module 13 through a cable 205. A sealing sleeve is provided at the place where the sealing cover 1 204 passes through the cable 205. Using two stress-strain gauges to measure torque can improve the test accuracy and is also convenient for installation. In addition, by setting the groove, it avoids occupying the surface and affecting the use of the connecting shaft. Using the sealing cover to cover, it avoids external influence and can also improve the test stability and reliability. The control circuit board 202 is fixedly connected in the groove 203 by screws and spring washers. The spring washer is placed between the control circuit board and the groove and maintains a certain elasticity, which can play a role of vibration damping for the control circuit board.

[0021] For the convenience of hiding the camera and better protecting it, the structure of the camera bracket 8 includes a camera mounting plate 801, a double-rod cylinder 802, and a second sealing cover 803. The camera mounting plate 801 is fixedly connected to the infrared camera 3 and the high-definition camera 4 side by side. The camera mounting plate 801 is fixedly connected to the mounting plate 805 fixedly connected to the ends of the two cylinder rods of the double-rod cylinder 802 through an L-shaped plate 804. The tail end of the cylinder block of the double-rod cylinder 802 is rotatably connected to the concave cavity 807 provided on the top surface of the telescopic part 4 through a pitching shaft 806. The pitching shaft 806 is connected to a pitching motor 808 that drives its rotation. The pitching motor 808 is installed in the motor slot 809 on one side of the concave cavity 807. The second sealing cover 803 covers the concave cavity 807, hiding the camera in the concave cavity, which can effectively protect the camera, avoid damage to the camera caused by flying stones during the use of the cutting head, improve the use safety, adopt the telescopic drive of the cylinder, facilitate the control of the height, and thus cover different ranges of shooting. The control of the pitching angle is realized through the pitching motor, and thus the control of the optimal pitching angle is realized.

[0022] For the convenience of sealing the concave cavity, the second sealing cover 803 is connected to the four connecting columns 811 through four tension springs 810. The four connecting columns 811 are symmetrically and fixedly connected to the cylinder block of the double-rod cylinder 802. The second sealing cover 803 includes a first-section sealing cover 812 and a second-section sealing cover 813. The length of the first-section sealing cover 812 is greater than that of the second-section sealing cover 813. The first-section sealing cover 812 is hinged to the second-section sealing cover 813. The second-section sealing cover 813 is hinged to the concave cavity 807 at the end far from the cutting head. After the double-rod cylinder 802 rotates and is located in the concave cavity 807, the first-section sealing cover 812 can be elastically tightened on the sealing step 814 provided at the cavity opening of the concave cavity 807, and the second-section sealing cover 813 seals the cavity opening. A sponge layer 815 is provided at the bottom of the concave cavity 807. The use of the two-section second sealing cover in cooperation with the four tension springs and the connecting columns can realize the quick and reliable covering and sealing of the cavity, avoid interference, realize automatic opening and closing during the rotation of the hydraulic cylinder, reduce power equipment, reduce costs, and save energy.

[0023] Embodiment 2: An operation method of a bauxite mining roadheader with a monitoring function. The method is as follows: During the lateral cutting process of the roadheader controlling the cutting head 5, if the current sensor of the motor driving the rotation of the cutting head 5 and the wireless torsional stress and strain gauge test module 2 arranged on the connecting shaft respectively detect a sudden change inflection point in the current curve and torque, then control the feed rate of the cutting head 5 to be halved and the rotational speed to increase by 20%. Control the annular spray pipe to rotate back and forth to spray and eject spray-shaped water to cool the cutting teeth. If the current value and the torque of the cutting head are still twice that of normal cutting and maintain the set time, then continue to control the feed rate of the cutting head 5 to be reduced by one-third and the rotational speed to be increased by 10%. The current sensor and the wireless torsional stress and strain gauge test module 2 continue to detect the current magnitude and torque magnitude, and the annular spray pipe sprays and rotates back and forth. When the current and torque meet the set range, then control the cutting at this speed and feed rate. If the current and torque still do not meet the set range, then withdraw one-third of the cutting depth, and the annular spray pipe sprays and rotates back and forth. If the current and torque respectively meet the corresponding set ranges, maintain the cutting in this state. If not, withdraw, slowly rotate the cutting head, use the infrared camera 3 to detect the temperature of the cutting head and the cutting teeth, and use the high-definition camera to collect pictures of the cutting head. If the collected temperature is higher than the set value and the pictures taken by the high-definition camera are compared to confirm whether there are broken teeth, if so, stop the operation of the roadheader and perform repair of the cutting teeth or replacement of the cutting head 5.

Claims

1. A bauxite mining roadheader with monitoring function, characterized in that: The invention comprises a cantilever-type tunnel boring machine body (1), a wireless torsional stress strain gauge test module (2), an infrared camera (3) and a high-definition camera (4); the cantilever-type tunnel boring machine body (1) is provided with a cutting head (5); a connecting shaft (401) of the cutting head (5) is rotatably connected to an output shaft of a gearbox (7) at an end of the telescopic part (6) and the end of the interior away from the cutting head (5); the telescopic part (6) is connected to an end of the gearbox (7) away from the cutting head (5); and a wireless torsional stress strain gauge test module (2) for detecting torsional stress of the cutting head (4), an infrared camera (3) and a high-definition camera (4) are installed on the connecting shaft (401) of the cutting head (4). The invention is installed on the telescopic part (6) through a hidden camera bracket (8), the infrared camera (3) and the high-definition camera (4) are used to detect the temperature of the cutting teeth and the broken teeth of the cutting head respectively, and also includes an annular spray pipe (9), two annular spray pipes (9) of different sizes are provided, fixedly connected to the rotating bracket (10) and arranged in a trumpet-shaped position outside the telescopic part (6), the rotating bracket (10) is rotatably connected to the outer surface of the telescopic part (6) and is driven by a driving mechanism (12) to rotate back and forth within 180 degrees, and a plurality of spray heads (11) are arranged in an annular staggered manner on the annular spray pipe (9), and the plurality of spray heads (11) are directed toward the cutting teeth of the cutting head (4).

2. The bauxite mining roadheader with monitoring function according to claim 1, characterized in that: It also includes a current sensor for a driving motor of the driving gearbox (7), and the current sensor is used to monitor changes in the torsional torque of the cutting head.

3. The bauxite mining roadheader with monitoring function according to claim 2, characterized in that: It also includes a monitoring and analysis module, which obtains an operating condition judgment of the cutting head based on the detection conditions of the current detection module, the wireless torsion stress strain gauge test module (2), the infrared camera (3) and the high-definition camera (4).

4. The bauxite mining roadheader with monitoring function according to claim 1, characterized in that: The wireless torsion stress strain gauge test module (2) is connected to a temperature difference power generation module (13), the temperature difference power generation module is connected inside the cutting head (5), and the wireless torsion stress strain gauge test module (2) is installed on a connecting shaft (401) located on an internal section of the cutting head (5).

5. The bauxite mining roadheader with monitoring function according to claim 1, characterized in that: The wireless torsion stress strain test piece module (2) comprises a stress strain gauge (201) and a control circuit board (202); the stress strain gauge (201) comprises two pieces, which are cross-attached in a groove (203) provided on a connecting shaft (401) and arranged at a 45° angle to the axis of the connecting shaft (401); the two pieces are connected to the control circuit board (202); the control circuit board (202) is fixedly connected in the groove (203); the groove (203) is sealed by a sealing cover 1 (204); the control circuit board (202) is connected to the temperature difference power generation module (13) via a cable (205); a sealing sleeve is provided at the place where the sealing cover 1 (204) passes through the cable (205).

6. The bauxite mining roadheader with monitoring function according to claim 1, characterized in that: The camera bracket (8) comprises a camera mounting plate (801), a double-rod cylinder (802) and a second sealing cover (803); the camera mounting plate (801) is fixedly connected to the infrared camera (3) and the high-definition camera (4) side by side; the camera mounting plate (801) is fixedly connected to a mounting plate (805) to which the ends of two cylinder rods of the double-rod cylinder (802) are fixedly connected via an L-shaped plate (804); the rear end of the cylinder seat of the double-rod cylinder (802) is rotatably connected to a concave cavity (807) provided on the top surface of the telescopic part (4) via a pitch axis (806); the pitch axis (806) is connected to a pitch motor (808) for driving the pitch motor (808) to rotate; the pitch motor (808) is installed in a motor slot (809) on one side of the concave cavity (807); and the second sealing cover (803) covers the concave cavity (807).

7. The bauxite mining roadheader with monitoring function according to claim 5, characterized in that: The second sealing cover (803) is connected to four connecting columns (811) via four tension springs (810), and the four connecting columns (811) are symmetrically fixedly connected to the cylinder seat of the double-rod cylinder (802). The second sealing cover (803) comprises a first-section sealing cover (812) and a second-section sealing cover (813). The first-section sealing cover (812) is longer than the second-section sealing cover (813). The first-section sealing cover (812) is hinged to the second-section sealing cover (813), and the second-section sealing cover (813) is hinged to a concave cavity (807) away from one end of the cutting head. After the double-rod cylinder (802) rotates and is located in the concave cavity (807), the first-section sealing cover (812) can be elastically tightened on a sealing step (814) provided at the cavity opening of the concave cavity (807), and the second-section sealing cover (813) is sealed on the cavity opening.

8. The method for operating a bauxite mining roadheader with a monitoring function according to claim 3, characterized in that: The method comprises: when a cutting head (5) is controlled by a roadheader during a lateral cutting process, if the current sensor of the motor driving the cutting head (5) to rotate and the wireless torsion stress strain gauge test module (2) arranged on the connecting shaft respectively detect that a sudden change inflection point occurs in the current curve and the torque, the feed rate of the cutting head (5) is controlled to be halved and the rotation speed is increased by 20%, and the annular spray pipe is controlled to rotate back and forth to spray and spray water to cool the cutting teeth; if the current value and the torque of the cutting head are still twice that of normal cutting and are maintained for a set time, the feed rate of the cutting head (5) is continued to be controlled to be reduced by one third and the rotation speed is increased by 10%, and the current sensor and the wireless torsion stress strain gauge test module (2) continue to detect the current size and the torque size. The annular spray pipe sprays and rotates back and forth. When the current and torque meet the set range, the speed and feed rate are controlled to cut. If the current and torque still do not meet the set range, the cutting amount is withdrawn by one third. The annular spray pipe sprays and rotates back and forth. If the current and torque meet the corresponding set ranges, the cutting is maintained in this state. If not, the cutting is withdrawn. The cutting head is rotated slowly. The temperature of the cutting head and the cutting teeth is detected by an infrared camera (3) and the image of the cutting head is collected by a high-definition camera. If the collected temperature is higher than the set value and the image taken by the high-definition camera is compared to confirm whether there is broken tooth, if so, the operation of the tunnel boring machine is stopped, and the cutting teeth are repaired or the cutting head (5) is replaced.

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