Mining cable bending tester

Abstract

The invention belongs to the technical field of coal cutter cable bending test equipment, and particularly relates to a mining cable bending tester which comprises a frame structure, a height adjusting mechanism, an angle adjusting mechanism and a cable dragging mechanism, the frame structure is fixed to a base, the angle adjusting mechanism is fixedly connected to the upper surface of the base, a cable dragging plane plate is arranged above the angle adjusting mechanism, and the cable dragging plane plate is fixedly connected to the upper surface of the base. One end of the towing cable surface plate is fixed on the base through a bracket; a cable clamp for clamping a cable is arranged above the towing cable plane plate, one end of the cable clamp is fixedly connected with a towing cable connecting frame, and the towing cable connecting frame is fixed below the height adjusting mechanism; the height adjusting mechanism is fixedly connected with the cable dragging mechanism; according to the mining cable performance testing device, through cooperative work of the height adjusting mechanism, the angle adjusting mechanism and the cable dragging mechanism, the actual running state of a mining cable in a well can be highly restored, and a real and reliable environment is provided for cable performance testing.

Description

Technical Field

[0001] This invention belongs to the technical field of coal mining machine cable bending test equipment, specifically relating to a mining cable bending test machine. Background Technology

[0002] With the upgrading of coal mining equipment, the stability of underground power supply systems has become increasingly important. As a key hardware facility, the performance and dynamic reliability of cables directly affect the safety of underground power supply. In fully mechanized mining faces, the cables of the coal mining machines need to move back and forth with the machines, and are subjected to various mechanical forces such as dragging, bending, twisting, and coal impact, which reduces the service life of the cables and affects the normal operation of the coal mining machines and the safe production of coal mines.

[0003] Currently, existing cable bending testing machines on the market have relatively simple functions, only capable of detecting the number of bends and determining core damage by the disappearance of current. However, with the increasing intelligence of mining equipment, the demand for a wider range of cable specifications is constantly growing. Furthermore, the complex and harsh environment of fully mechanized mining faces means that cables are subjected to varying degrees of bending, compression, and dragging mechanical forces during operation. Existing equipment is insufficient to meet the stringent requirements of modern mines for cable bending performance. For example, cables often exhibit problems such as insulation damage, conductor tensile overload, and core fatigue fracture before reaching the bending test indicators. Therefore, developing a mining cable bending testing machine that can comprehensively simulate the actual working conditions of cables and perform accurate performance testing is of significant practical importance. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a mining cable bending test machine to simulate the bending and dragging conditions of mining cables under complex underground working conditions. This solves the problem that existing cable bending test machines have limited functionality and cannot meet the comprehensive testing needs of modern mines for cable bending performance. This test machine can accurately simulate the actual operating conditions of coal mining machine cables underground, enabling comprehensive testing and evaluation of cable performance, improving the accuracy and reliability of cable testing, and ensuring the quality of mining cables and the safe and stable operation of underground power supply systems.

[0005] A mining cable bending test machine includes a frame structure, a height adjustment mechanism, an angle adjustment mechanism, and a cable dragging mechanism. The frame structure is fixed on a base. The angle adjustment mechanism is fixed to the upper surface of the base. A cable dragging plate is provided above the angle adjustment mechanism. One end of the cable dragging plate is fixed to the base by a bracket. A cable clamp for holding the cable is provided above the cable dragging plate. One end of the cable clamp is fixedly connected to a cable dragging frame, which is fixed below the height adjustment mechanism. The height adjustment mechanism is fixedly connected to the cable dragging mechanism. A cable dragging beam is provided above the frame structure, and the cable dragging mechanism is slidably connected to the cable dragging beam.

[0006] The frame structure includes truss support beams and columns. Multiple columns are evenly distributed on the base. A section of truss support beam is provided between every two columns. Multiple truss support beams are fixedly connected to form a rectangular truss. A cable-stayed beam is provided between the two short sides of the rectangular truss.

[0007] The angle adjustment mechanism includes an angle adjustment fixing plate, an angle adjustment hydraulic cylinder, an angle adjustment slide rail, a support arm, and a rotating arm. The angle adjustment fixing plate is fixed on the base. One end of the angle adjustment hydraulic cylinder is fixedly connected to the angle adjustment fixing plate, and the other end is connected to a connecting rod through a connector. Both ends of the connecting rod are connected to the support arm. One end of the support arm rotates in the middle of the rotating arm. The two rotating arms are connected by an auxiliary support beam. The bottom of the rotating arm is rotatably connected to the fixing rod at the angle adjustment fixing end. The other end of the rotating arm is equipped with a pulley, which contacts the towing cable plane plate. The bottom of the support arm on the connecting rod side is fixedly connected to the angle adjustment slider. The angle adjustment slider is slidably connected to the angle adjustment slide rail, which is fixedly connected to the angle adjustment fixing plate.

[0008] The cable dragging mechanism includes a translational drag cable upper panel, a drag cable front panel, a drag motor, and a horizontal drag slider. The side of the translational drag cable upper panel is fixedly connected to the drag cable front panel via a hoisting fixing beam. The drag motor is fixed to the drag cable front panel. A rack is provided on the side of the drag cable crossbeam, and the output shaft of the drag motor is connected to a gear, which meshes with the rack. A horizontal drag slider is fixedly connected below the translational drag cable upper panel and is slidably connected to the guide rail I of the drag cable crossbeam. A set of translational drag auxiliary supports is provided on the drag cable front panel and is slidably connected to the guide rails on the upper and lower planes of the drag cable crossbeam.

[0009] The height adjustment mechanism includes a height adjustment column, height adjustment auxiliary supports, a height adjustment fixing mechanism, and a height adjustment motor. A set of guide rails II are symmetrically arranged on the height adjustment column, and a rack is provided on the inner side of the guide rails II. Two sets of height adjustment auxiliary supports are fixedly connected to the front plate of the tow cable. The height adjustment column is slidably connected to the height adjustment auxiliary supports through the guide rails II. A set of height adjustment fixing mechanisms is provided on the front plate of the tow cable for fixing the height adjustment column. The height adjustment motor is fixedly connected to the upper plate of the translational tow cable. The output shaft of the height adjustment motor is connected to a gear, and the gear meshes with the rack on the guide rails II. The bottom of the height adjustment column is connected to the tow cable connecting frame.

[0010] The height adjustment and fixing mechanism includes a DC motor, which is fixed on the front panel of the tow cable. The output shaft of the DC motor is connected to a pin. Several holes are provided on both sides of the height adjustment column, and the pin is fixed in the holes.

[0011] Mechanical limit switches are provided at the top and top of the guide rail II of the height adjustment column and at both ends of the guide rail I of the cable crossbeam.

[0012] The bottom of the towing cable flat plate is provided with reinforcing ribs; the towing cable flat plate includes a flat plate and side plate flat plates. The flat plate is in contact with the pulley on the rotating arm of the angle adjustment mechanism. A set of parallel side plate flat plates are fixedly connected above the flat plate. A wire groove is formed between the side plate flat plates and the flat plate for placing cable clamps that hold cables.

[0013] A tension sensor is installed at the connection between the tow cable connector and the cable clamp to monitor the cable towing tension. A speed sensor is installed on the side of the upper panel of the translational tow cable to detect the towing speed. A displacement sensor is installed on the front panel of the tow cable to monitor the high speed of cable lifting and lowering. An angle sensor is installed on the plane of the tow cable to monitor the change of cable angle.

[0014] The output shafts of the height adjustment motor and the drive motor are equipped with encoders.

[0015] The beneficial effects of this invention are as follows: This invention, through the coordinated operation of a height adjustment mechanism, an angle adjustment mechanism, and a cable dragging mechanism, can highly replicate the actual operating state of mining cables underground, including different dragging heights, inclination angles, and speeds, providing a realistic and reliable environment for cable performance testing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a mining cable bending tester according to the present invention; Figure 2 This is a left view of a mining cable bending tester according to the present invention; Figure 3 This is a schematic diagram of the height adjustment mechanism of a mining cable bending tester according to the present invention; Figure 4 This is a schematic diagram of the cable dragging mechanism of a mining cable bending tester according to the present invention; Figure 5 This is an enlarged view of the connection between the cable dragging mechanism and the dragging crossbeam of a mining cable bending tester according to the present invention. Figure 6 This is a schematic diagram of the column structure of a mining cable bending tester according to the present invention; Figure 7 This is a schematic diagram of the height adjustment column of a mining cable bending tester according to the present invention; Figure 8 This is a schematic diagram of the angle adjustment mechanism of a mining cable bending tester according to the present invention; Figure 9 This is a schematic diagram showing the connection between the angle adjustment mechanism and the cable dragging plate of a mining cable bending tester according to the present invention. Figure 10 This is a schematic diagram of the structure of the cable dragging plate of a mining cable bending tester according to the present invention; Figure 11 A schematic diagram of the structure of a cable dragging plate with reinforcing ribs in a mining cable bending tester according to the present invention; In the diagram, 1. Frame structure; 101. Truss support beam; 102. Column; 1021. Column I; 1022. Column II; 1023. Column fixing plate; 1024. Front and rear reinforcement supports of the base; 1025. Translational reinforcement support of the base; 1026. Column reinforcing rib plate; 1027. Beam fixing plate; 2. Base; 3. Height adjustment mechanism; 301. Height adjustment column; 302. Guide rail II; 303. Height adjustment auxiliary support; 304. Height adjustment fixing mechanism; 305. Height adjustment motor; 4. Angle adjustment mechanism; 401. Angle adjustment fixing plate; 402. Angle adjustment hydraulic cylinder; 403. Angle adjustment slide rail; 404. Support arm; 405. Rotating arm; 406. Connecting rod; 407. Auxiliary support beam; 408. Angle adjustment fixing end; 409. Pulley; 410. Angle adjustment slider; 5. 501. Cable dragging mechanism; 502. Upper panel of the translational dragging cable; 503. Lifting and fixing beam; 504. Front panel of the dragging cable; 505. Dragging motor; 506. Horizontal dragging slider; 507. Translational dragging auxiliary support; 6. Cable dragging flat plate; 601. Reinforcing rib; 602. Flat plate; 603. Side plate flat plate; 7. Bracket; 8. Cable clamp; 9. Cable dragging connecting frame; 10. Cable dragging crossbeam; 1001. Guide rail I; 1002. Guide rail; 11. Mechanical limit switch. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings.

[0018] like Figures 1-11 As shown, a mining cable bending test machine includes a frame structure 1, a height adjustment mechanism 3, an angle adjustment mechanism 4, and a cable dragging mechanism 5. The frame structure 1 is fixed on a base 2. The angle adjustment mechanism 4 is fixedly connected to the upper surface of the base 2. A cable dragging plate 6 is provided above the angle adjustment mechanism 4. One end of the cable dragging plate 6 is fixed to the base 2 through a bracket 7. A cable clamp 8 for holding the cable is provided above the cable dragging plate 6. One end of the cable clamp 8 is fixedly connected to a cable dragging frame 9, which is fixed below the height adjustment mechanism 3. The height adjustment mechanism 3 is fixedly connected to the cable dragging mechanism 5. A cable dragging beam 10 is provided above the frame structure 1, and the cable dragging mechanism 5 is slidably connected to the cable dragging beam 10. In this embodiment, the cable dragging mechanism 5 is used to adjust the dragging of the cable. The upper surface of the base 2 is provided with three angle adjustment mechanisms 4. The angle adjustment mechanism 4 moves to adjust the cable dragging angle, and the height adjustment mechanism 3 moves to adjust the cable dragging height. Through the coordinated work of the height adjustment mechanism 3, the angle adjustment mechanism 4 and the cable dragging mechanism 5, the actual operating state of the mining cable in the mine can be highly reproduced, including different dragging heights, angles and speeds, providing a real and reliable environment for cable performance testing.

[0019] The cable clamp 8 of this application can accommodate cables of different diameters. The cable clamp 8 has sufficient clamping force to ensure that the cable will not slip during dragging. At the same time, the cable clamp 8 can reduce the impact on the cable during clamping and protect the cable from damage.

[0020] The frame structure 1 includes truss support beams 101 and columns 102. Multiple columns 102 are evenly distributed on the base 2. A section of truss support beam 101 is provided between every two columns 102. Multiple truss support beams 101 are fixedly connected to form a rectangular truss. A cable drag beam 10 is provided between the two short sides of the rectangular truss. In this embodiment, the frame structure 1 adopts a high-strength steel structure with dimensions (length, width, height) of 13460mm×4700mm×2464.5mm, and the column 102 has dimensions of 2272.5mm (height)×2600mm (width)×12740mm (length), ensuring stable load transfer and reliable equipment operation during the test.

[0021] The columns include a vertically erected support column I 1021 and a support column II 1022 intersecting with support column I. Support column I 1021 and support column II 1022 are fixed to a column fixing plate 1023, which is fixed to a base 2. The bottom of support column I 1021 is fixedly connected to a base front and rear reinforcing support 1024 and a base translational reinforcing support 1025. The top of support column I 1021 and support column II 1022 is fixedly connected to a crossbeam fixing plate 1027 and reinforced by a column reinforcing rib plate 1026. The top of the crossbeam fixing plate 1027 is used for the fixed connection of two truss support crossbeams 101.

[0022] The angle adjustment mechanism 4 includes an angle adjustment fixing plate 401, an angle adjustment hydraulic cylinder 402, an angle adjustment slide rail 403, a support arm 404, and a rotating arm 405. The angle adjustment fixing plate 401 is fixed on the base 2. One end of the angle adjustment hydraulic cylinder 402 is fixedly connected to the angle adjustment fixing plate 401, and the other end is connected to a connecting rod 406 via a connector. Both ends of the connecting rod 406 are connected to the support arm 404. One end of the support arm 404 rotates in the middle of the rotating arm 405. The rotating arms 405 are connected by an auxiliary support beam 407. The bottom of the rotating arm 405 is rotatably connected to the fixed rod of the angle adjustment fixed end 408. The other end of the rotating arm 405 is provided with a pulley 409, which contacts the towing cable plane plate 6. The bottom of the support arm 404 on the side of the connecting rod 406 is fixedly connected to the angle adjustment slider 410. The angle adjustment slider 410 is slidably connected to the angle adjustment slide rail 403, which is fixedly connected to the angle adjustment fixed plate 401.

[0023] In this embodiment, a shear-type lift is used to achieve angle control. The tilt angle can be adjusted within the range of 0-8°. The angle-adjusting hydraulic cylinder moves, causing the support arm 404 to slide on the angle-adjusting slide rail 403, thereby raising and lowering the rotating arm 405, thereby adjusting the angle of the cable-dragging plane plate 6, and thus changing the cable dragging angle.

[0024] The cable dragging mechanism 5 includes a translational drag cable upper panel 501, a drag cable front panel 503, a drag motor 504, and a horizontal drag slider 505. The side of the translational drag cable upper panel 501 is fixedly connected to the drag cable front panel 503 via a hoisting fixing beam 502. The drag motor 504 is fixed on the drag cable front panel 503. A rack is provided on the side of the drag cable crossbeam 10. The output shaft of the drag motor 504 is connected to a gear, and the gear meshes with the rack on the drag cable crossbeam 10. A horizontal drag slider 505 is fixedly connected below the translational drag cable upper panel 501. The horizontal drag slider 505 is slidably connected to the guide rail I1001 of the drag cable crossbeam 10. A set of translational drag auxiliary supports 506 is provided on the drag cable front panel 503. The set of translational drag auxiliary supports 506 is slidably connected to the guide rails 1002 on the upper and lower planes of the drag cable crossbeam 10.

[0025] In this embodiment, the drag motor 504 drives the gear to rotate and mesh with the rack on the cable drag beam 10, thereby driving the horizontal drag slider 505 to slide on the cable drag beam 10, thus realizing the dragging of the cable. The horizontal dragging speed can be adjusted within the range of 0.05-1.2 m / s, and the maximum dragging force reaches 1.8 kN. The translational dragging auxiliary support 506 slides on the guide rails 1002 on the upper and lower planes of the cable drag beam 10 to ensure the stability of the horizontal drag slider 505, thereby ensuring dragging stability and reducing vibration.

[0026] The height adjustment mechanism 3 includes a height adjustment column 301, a height adjustment auxiliary support 303, a height adjustment fixing mechanism 304, and a height adjustment motor 305. A set of guide rails II 302 are symmetrically arranged on the height adjustment column 301. A rack is provided on the inner side of the guide rails II 302. Two sets of height adjustment auxiliary supports 303 are fixedly connected to the front panel 503 of the tow cable. The height adjustment column 301 is slidably connected to the height adjustment auxiliary support 303 through the guide rails II 302. A set of height adjustment fixing mechanism 304 is provided on the front panel 503 of the tow cable for fixing the height adjustment column 301. The height adjustment motor 305 is fixedly connected to the upper panel 501 of the translational tow cable. The output shaft of the height adjustment motor 305 passes through the upper panel 501 of the translational tow cable and connects to a gear. The gear meshes with the rack on the guide rails II 302. The bottom of the height adjustment column 301 is connected to the tow cable connecting frame 9.

[0027] The height adjustment and fixing mechanism 304 includes a DC motor, which is fixed on the front panel 503 of the tow cable. The output shaft of the DC motor is connected to a pin. The two sides of the height adjustment column 301 are provided with several holes, and the pin is fixed in the holes.

[0028] In this embodiment, the height adjustment motor 305 drives the gear to move, and the gear meshes with the rack, causing the height adjustment column 301 to slide on the height adjustment auxiliary support 303, thereby realizing the height adjustment of the cable. The height adjustment auxiliary support 303 makes the height adjustment column 301 stable in raising and lowering. When the height adjustment column 301 is adjusted to a certain height, the DC motor works, causing the pin to insert into the hole on the side of the height adjustment column 301, ensuring that the height adjustment mechanism does not fall in case of emergencies. The lifting height range of the height adjustment column 301 is 0.4-1.8m. The height adjustment motor 305 is a servo motor and is equipped with a reducer to increase the output torque to meet different height adjustment needs, achieving an adjustable lifting speed of 0.1-0.5m / s, which can achieve precise height control. The gear is made of alloy steel, and the rack is made of high-strength material.

[0029] Mechanical limit switches 11 are provided at the top and top of the guide rail II 302 of the height adjustment column 301 and at both ends of the guide rail I 1001 of the cable crossbeam.

[0030] The bottom of the cable-laying plate 6 is provided with a reinforcing rib 601; the cable-laying plate 6 includes a flat plate 602 and a side plate flat plate 603. The flat plate 602 is in contact with the pulley 409 on the rotating arm 405 of the angle adjustment mechanism 4. A set of parallel side plate flat plates 603 are fixedly connected above the flat plate 602. A wire groove is formed between the side plate flat plates 603 and the flat plate 602 for placing the cable clamp 8 that holds the cable.

[0031] In this embodiment, the flat plate 602 of the cable dragging plate 6 is assembled from flat plates and has internal reinforcing ribs 601 to enhance structural strength; the single size of the flat plate 602 is 4000mm (length) × 1000mm (width) × 10mm (thickness), the cable groove depth is 235mm, and the length reaches 12000mm, which effectively prevents the cable from slipping.

[0032] A tension sensor is provided at the connection between the tow cable connecting frame 9 and the cable clamp 8 to monitor the cable towing tension. A speed sensor is provided on the side of the upper panel 501 of the translational tow cable to detect the towing speed. A displacement sensor is provided on the front panel 503 of the tow cable to monitor the high speed of cable lifting and lowering. An angle sensor is provided on the tow cable plane plate 6 to monitor the change of cable angle.

[0033] The output shafts of the height adjustment motor and the drive motor are equipped with encoders.

[0034] The RecurDyn software was used to perform dynamic simulations on the key functional modules of the testing machine: the cable dragging mechanism 5, the height adjustment mechanism 3, and the angle adjustment mechanism 4. Simulation analysis ensured that the model met the project requirements of adjustable lifting height (0.4-1.8m) and tilt angle (0-8°), and that the cable bending stress distribution was reasonable, with the maximum stress value below the material yield strength. Reliability verification was conducted on key components such as the column and crossbeam. The results showed that under different working conditions, the safety factors of each component met the engineering requirements, with the column's tensile safety factor (ultimate strength) reaching 4.12 and the crossbeam's safety factor at 2.83, ensuring the overall safety and reliability of the testing machine.

[0035] When using the testing machine of this invention: 1. Equipment manufacturing and assembly According to the design dimensions, high-strength steel was selected, and the frame structure 1 was precisely assembled through welding and other processes to ensure the dimensional accuracy and structural strength of the frame structure 1. During the welding process, the welding quality was strictly controlled to avoid defects such as incomplete welds and cracks, ensuring that the frame structure 1 could stably bear various loads during the test.

[0036] Install the height adjustment mechanism 3, angle adjustment mechanism 4, and cable dragging mechanism 5 sequentially. When installing the height adjustment mechanism 3, precisely adjust the gear and rack meshing clearance to ensure smooth transmission. When installing the angle adjustment mechanism 4, ensure the installation accuracy of each component so that the angle adjustment mechanism 4 can accurately achieve angle adjustment. The installation of the cable dragging plate 6 must ensure a firm connection to the base 2, a flat bottom surface, and secure welding of the reinforcing ribs 601 to prevent cable slippage during testing.

[0037] Sensor Installation: Based on the sensor type and design requirements, install the tension sensor, velocity sensor, displacement sensor, and tilt sensor in their respective positions. During installation, pay attention to the sensor's installation orientation and fixing method to ensure that the sensors can accurately sense various physical changes in the cable during the testing process and stably transmit signals to the data acquisition system.

[0038] 2. Test Operation Procedure Select a cable sample of appropriate specifications according to the testing requirements and install it on cable clamp 8. Check that all components of the testing machine are securely installed and that the sensors are working properly. Set the test parameters, such as bending radius, dragging speed, and number of tests.

[0039] Test Procedure: Start the testing machine. First, adjust the initial position and angle of the cable using the height adjustment mechanism 3 and the angle adjustment mechanism 4 to meet the test requirements. Then, start the cable dragging mechanism 5 to simulate the cable dragging process underground. During the test, closely monitor the operating status of the testing machine and the test results of the cable. If any abnormality is found, stop the test immediately for troubleshooting.

[0040] The height adjustment mechanism 3 uses a height adjustment motor to drive a gear and rack transmission system to adjust the cable to the required towing height. During the adjustment process, the height adjustment auxiliary support 303 and the gear and rack system work together to ensure the smoothness and accuracy of lifting. The angle adjustment mechanism 4 uses a shear-type hoist to adjust the cable plane plate 6 to a suitable tilt angle to simulate the actual tilting conditions of the cable underground.

[0041] The cable dragging mechanism 5 is activated, and the dragging motor 504 drives the cable to drag via a gear and rack transmission system. The speed can be adjusted within the range of 0-1 m / s according to the test requirements. During the dragging process, tension and speed sensors monitor the changes in cable tension and speed in real time.

[0042] 3. Maintenance and Care Regularly inspect the mechanical components of the testing machine, such as checking the wear of gears and racks, the lubrication of guide rails, and the corrosion of cable trays. Replace any severely worn or damaged parts promptly. Check the measurement accuracy of the sensors; if any deviation is found, calibrate them immediately.

[0043] Regularly clean the testing machine to remove dust, oil, and other impurities from its surface, keeping the equipment clean. Regularly add lubricating oil to moving mechanical parts such as gears, racks, and guide rails to ensure smooth operation and reduce wear.

[0044] The height adjustment mechanism and angle adjustment mechanism achieve precise height and angle control, respectively, to meet different testing needs and adapt to bending tests of various cable specifications. For example, when testing cable performance at different working surface inclination angles, the angle adjustment mechanism can precisely adjust the angle to ensure test accuracy.

[0045] Regarding equipment maintenance, the testing machine features a reasonable structural design, making it easy to disassemble and install components. Its modular design also facilitates the replacement and repair of faulty parts. Regular inspections and maintenance, such as checking the lubrication of the guide rails, the accuracy of the sensors, and the tightness of the connections, ensure long-term stable operation of the equipment.

[0046] This testing machine can accurately reproduce the complex operating conditions of coal mining machine cables in harsh underground environments, conducting in-depth testing of cable performance from multiple angles and in all aspects. Through precise simulation, it significantly improves the accuracy and reliability of cable performance testing, fully meeting the increasingly stringent testing standards for cable bending performance in modern mines, laying a solid foundation for safe coal mine production, and contributing to the high-quality development of the coal industry.

[0047] Through the above specific implementation methods, the mining cable bending tester of the present invention can effectively realize comprehensive performance testing of mining cables, providing strong support for cable quality inspection and safe production in the coal mining industry.

Claims

1. A mining cable bending tester, characterized in that, The system includes a frame structure, a height adjustment mechanism, an angle adjustment mechanism, and a cable dragging mechanism. The frame structure is fixed to a base, and the angle adjustment mechanism is fixed to the upper surface of the base. Above the angle adjustment mechanism is a cable dragging plate, one end of which is fixed to the base via a bracket. Above the cable dragging plate is a cable clamp for holding cables, one end of which is fixedly connected to a cable dragging frame, which is fixed below the height adjustment mechanism. The height adjustment mechanism is fixedly connected to the cable dragging mechanism. Above the frame structure is a cable dragging beam, and the cable dragging mechanism is slidably connected to the cable dragging beam.

2. The mining cable bending tester according to claim 1, characterized in that, The frame structure includes truss support beams and columns. Multiple columns are evenly distributed on the base. A section of truss support beam is provided between every two columns. Multiple truss support beams are fixedly connected to form a rectangular truss. A cable-stayed beam is provided between the two short sides of the rectangular truss.

3. The mining cable bending tester according to claim 1, characterized in that, The angle adjustment mechanism includes an angle adjustment fixing plate, an angle adjustment hydraulic cylinder, an angle adjustment slide rail, a support arm, and a rotating arm. The angle adjustment fixing plate is fixed on the base. One end of the angle adjustment hydraulic cylinder is fixedly connected to the angle adjustment fixing plate, and the other end is connected to a connecting rod through a connector. Both ends of the connecting rod are connected to the support arm. One end of the support arm rotates in the middle of the rotating arm. The two rotating arms are connected by an auxiliary support beam. The bottom of the rotating arm is rotatably connected to the fixing rod at the angle adjustment fixing end. The other end of the rotating arm is equipped with a pulley, which contacts the towing cable plane plate. The bottom of the support arm on the connecting rod side is fixedly connected to the angle adjustment slider. The angle adjustment slider is slidably connected to the angle adjustment slide rail, which is fixedly connected to the angle adjustment fixing plate.

4. The mining cable bending tester according to claim 1, characterized in that, The cable dragging mechanism includes a translational drag cable upper panel, a drag cable front panel, a drag motor, and a horizontal drag slider. The side of the translational drag cable upper panel is fixedly connected to the drag cable front panel via a hoisting fixing beam. The drag motor is fixed to the drag cable front panel. A rack is provided on the side of the drag cable crossbeam, and the output shaft of the drag motor is connected to a gear, which meshes with the rack. A horizontal drag slider is fixedly connected below the translational drag cable upper panel and is slidably connected to the guide rail I of the drag cable crossbeam. A set of translational drag auxiliary supports is provided on the drag cable front panel and is slidably connected to the guide rails on the upper and lower planes of the drag cable crossbeam.

5. A mining cable bending tester according to claim 1, characterized in that, The height adjustment mechanism includes a height adjustment column, height adjustment auxiliary supports, a height adjustment fixing mechanism, and a height adjustment motor. A set of guide rails II are symmetrically arranged on the height adjustment column, and a rack is provided on the inner side of the guide rails II. Two sets of height adjustment auxiliary supports are fixedly connected to the front plate of the tow cable. The height adjustment column is slidably connected to the height adjustment auxiliary supports through the guide rails II. A set of height adjustment fixing mechanisms is provided on the front plate of the tow cable for fixing the height adjustment column. The height adjustment motor is fixedly connected to the upper plate of the translational tow cable. The output shaft of the height adjustment motor is connected to a gear, and the gear meshes with the rack on the guide rails II. The bottom of the height adjustment column is connected to the tow cable connecting frame.

6. A mining cable bending tester according to claim 1, characterized in that, The height adjustment and fixing mechanism includes a DC motor, which is fixed on the front panel of the tow cable. The output shaft of the DC motor is connected to a pin. Several holes are provided on both sides of the height adjustment column, and the pin is fixed in the holes.

7. A mining cable bending tester according to claim 1, characterized in that, Mechanical limit switches are provided at the top and top of the guide rail II of the height adjustment column and at both ends of the guide rail I of the cable crossbeam.

8. A mining cable bending tester according to claim 1, characterized in that, The bottom of the towing cable flat plate is provided with reinforcing ribs; the towing cable flat plate includes a flat plate and side plate flat plates. The flat plate is in contact with the pulley on the rotating arm of the angle adjustment mechanism. A set of parallel side plate flat plates are fixedly connected above the flat plate. A wire groove is formed between the side plate flat plates and the flat plate for placing cable clamps that hold cables.

9. A mining cable bending tester according to claim 1, characterized in that, A tension sensor is installed at the connection between the tow cable connector and the cable clamp to monitor the cable towing tension. A speed sensor is installed on the side of the upper panel of the translational tow cable to detect the towing speed. A displacement sensor is installed on the front panel of the tow cable to monitor the high speed of cable lifting and lowering. An angle sensor is installed on the plane of the tow cable to monitor the change of cable angle.

10. A mining cable bending tester according to claim 1, characterized in that, The output shafts of the height adjustment motor and the drive motor are equipped with encoders.

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