Automatic mining explosion-proof cable winding and unwinding device

Abstract

The utility model relates to cable automatic take -up device technical field, especially mine explosion -proof cable automatic take -up device, including explosion -proof cylinder, cable conveying module, cable rope, tension traction module, pressure -bearing disc and cable carding module, through the design of double -layer explosion -proof cylinder, internal filling inert gas, effective inhibition electric arc spark, satisfy mine explosion -proof standard, cable carding module passes through the adjustment ring and flexible ball structure of pneumatic cylinder drive, avoid cable stacking winding, tension traction module integration camera and vibration sensor, real -time monitoring cable tension, when abnormal automatically trigger shower cooling, reduce abrasion, pressure -bearing disc and segmented board structure combine spring damper, can adapt to the rugged ground of mine, reduce the cable deviation caused by the equipment jolt, multi -motor collaborative drive realizes the independent control of winding roller, winding bar, matches long -distance mobile equipment demand, promotes overall automatic take -up effect.

Description

Technical Field

[0001] This utility model relates to the technical field of automatic cable retraction and deployment devices, and in particular to an automatic cable retraction and deployment device for explosion-proof mining cables. Background Technology

[0002] Mining cable reeling and laying devices are cable management equipment specifically designed for mining operating environments. They are mainly used to realize the automatic reeling, laying, and tension control of cables to meet the power transmission needs under complex mining conditions. Typical application scenarios include the power supply systems of underground electric loaders, mining shuttle cars, and tunneling equipment. These devices have become key infrastructure for modern mine automation and safe production.

[0003] Meanwhile, traditional automatic cable reeling and unwinding devices use a motor to drive the drum to rotate, and the torque is increased by a gearbox to drive the cable reeling and unwinding. When the mobile device moves away, the cable drag force overcomes the magnetic hysteresis torque to unwind the cable. When it moves closer, the motor automatically reels the cable. Long-term overload can easily cause breakage, and the device has poor compatibility with long-distance mobile devices. This can easily lead to cable stacking or deviation from the center of the drum, resulting in overall damage and reducing the overall automatic reeling and unwinding effect. Utility Model Content

[0004] In order to overcome the limitations of traditional automatic cable reeling and unloading devices, which rely on cable dragging force to overcome magnetic hysteresis torque to release the cable and the motor to automatically reel it in when it gets close, this device is prone to breakage due to long-term overload and poor compatibility with long-distance mobile equipment, which can easily lead to cable stacking or deviation from the center of the drum and overall damage. This utility model provides an explosion-proof automatic cable reeling and unloading device for mining.

[0005] The technical solution is as follows: An automatic cable retraction and deployment device for explosion-proof cables used in mines includes an explosion-proof cylinder, a cable conveying module, a cable rope, a tensioning and traction module, a pressure plate, and a cable combing module. The explosion-proof cylinder is used for conveying the explosion-proof cable rope within the mine. Inside the explosion-proof cylinder is a cable conveying module for automatically controlling the retraction and deployment of the cable rope. The cable conveying module is equipped with a tensioning and traction module for automatically controlling and adjusting the tension of the cable rope. Below the explosion-proof cylinder is a pressure plate for supporting the overall stability. Inside the cable conveying module is a cable combing module to prevent the cable rope from becoming tangled.

[0006] Furthermore, the cable conveying module includes a roller, both ends of which are fitted with explosion-proof housings. A connecting shaft is located at the center of the roller, and a collar is provided between the connecting shaft and the explosion-proof housing. One end of the connecting shaft is connected to a first drive motor, which drives the connecting shaft to rotate the roller.

[0007] Furthermore, an airbag shell is provided inside the explosion-proof housing, and a gas space for storing inert gas to prevent electric arc is provided between the airbag shell and the explosion-proof housing. A filling box is connected to the outer end of the explosion-proof housing, and a metering solenoid valve is provided in the center of the filling box. A filling pipe is connected to the top of the filling box.

[0008] Furthermore, the tensioning and traction module includes a rotating frame, a guide frame, and a swing frame. One end of the rotating frame is connected to the guide frame, and the end of the guide frame away from the rotating frame is connected to the swing frame. The rotating frame, guide frame, and swing frame are all arranged in two parallel sets. A first winding rod, a second winding rod, and a third winding rod are correspondingly passed through the two sets of rotating frames, guide frames, and swing frames. A rotating frame is provided between the rotating frame and the cable conveying module. A second drive motor is provided at one end of the rotating frame. The second drive motor drives the rotating frame to adjust the rotating frame. Tube sleeves are fitted on the first winding rod, the second winding rod, and the third winding rod. A camera is provided at the center of the guide frame. The camera contains a wireless module, a vibration sensor, and a warning light that are electrically connected to each other. A nozzle is passed through one end of the swing frame. A pressure pump electrically connected to the camera is provided inside the nozzle. Several sets of spray holes are distributed on the nozzle. A fire pipe is provided at the bottom of the nozzle. A first tightening bolt sleeve is provided between the fire pipe and the nozzle.

[0009] Furthermore, a fourth drive motor is provided between the rotating frame and the guide frame. The fourth drive motor drives the first winding bar to rotate the rotating frame and the guide frame. A third drive motor connected to the second winding bar is provided between the guide frame and the swing frame. The third drive motor drives the second winding bar to swing the guide frame and the swing frame. A first spring column is connected to the side end of the guide frame. A spring damper is provided inside the first spring column.

[0010] Furthermore, a second tightening bolt sleeve is fitted on both sides of the sleeve, and an extension rod is provided on both sides of the sleeve. A steering rod is passed through the end of the extension rod away from the sleeve. A main wheel is fitted in the middle of the steering rod, and auxiliary wheels are fitted at both ends of the steering rod.

[0011] Furthermore, both sides of the pressure plate are equipped with brackets that support the upward connection cable conveying module. The outer end of the bracket is connected to a connecting sleeve. The center of the connecting sleeve is equipped with a second spring column. The second spring column is equipped with a spring damper. The bottom of the pressure plate is connected to a segmented plate. Both ends of the segmented plate are equipped with pressure plates. Several sets of roller modules are distributed at the bottom of both the segmented plate and the pressure plate.

[0012] Furthermore, the cable combing module includes adjusting rings, which are arranged in two sets opposite each other. The outer side of the adjusting rings is covered with an anti-corrosion sleeve, and the inner side of the adjusting rings is provided with several sets of fixing rods in a circumferential direction. The end of the fixing rod away from the adjusting ring is connected to a flexible ball, and the outer ends of the two sets of adjusting rings are connected to an extension frame. The end of the extension frame away from the adjusting ring is provided with a push rod, and one end of the push rod is provided with a cylinder. The bottom of the cylinder is fixed with a stabilizing block, and several sets of telescopic sleeves that extend and retract with each other are provided between the two sets of push rods. The cylinder drives the push rod to adjust the adjusting rings along the direction of the telescopic sleeves.

[0013] The beneficial effects are as follows: This utility model achieves effective suppression of electric arc sparks by adopting a double-layer explosion-proof cylinder design and filling it with inert gas, meeting the explosion-proof standards for mining. The cable combing module avoids cable stacking and tangling through a cylinder-driven adjusting ring and flexible ball structure. The tensioning and traction module integrates a camera and vibration sensor to monitor cable tension in real time. In case of abnormality, it automatically triggers the nozzle to cool down and reduce wear. The pressure plate and segmented plate structure combined with a spring damper can adapt to the rugged ground of the mine and reduce cable deviation caused by equipment bumps. The multi-motor coordinated drive enables independent control of the roller and winding bar, matching the needs of long-distance mobile equipment. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the automatic retraction and deployment device for explosion-proof cables used in mining according to this utility model.

[0015] Figure 2 This is a schematic diagram of the cable conveying module of this utility model;

[0016] Figure 3 This is a schematic diagram of the tensioning and traction module of this utility model;

[0017] Figure 4 This is a schematic diagram of the pressure plate of this utility model;

[0018] Figure 5 This is a schematic diagram of the cable combing module of this utility model.

[0019] In the attached drawings, the following are the reference numerals: 1. Explosion-proof cylinder; 2. Cable conveying module; 3. Cable rope; 4. Tensioning and traction module; 5. Pressure plate; 6. Cable combing module; 201. Roller; 202. Explosion-proof housing; 203. Airbag housing; 204. Filling box; 205. Metering solenoid valve; 206. Filling pipe; 207. Collar; 208. First drive motor; 209. Connecting shaft; 401. Turning frame; 402. Guide frame; 403. Swing frame; 404. First winding bar; 405. Warning light; 406. First spring column; 407. Fire tank; 408. Nozzle; 409. Spray hole; 410. First loosening bolt sleeve; 411. Pipe 412. Second tightening bolt sleeve; 413. Extension rod; 414. Steering rod; 415. Auxiliary wheel; 416. Main wheel; 417. Second winding bar; 418. Third winding bar; 419. Second drive motor; 420. Third drive motor; 421. Fourth drive motor; 501. Segment plate; 502. Roller module; 503. Connecting sleeve; 504. Second spring column; 505. Pressure plate; 506. Bracket; 601. Adjusting ring; 602. Anti-corrosion sleeve; 603. Fixing rod; 604. Flexible ball; 605. Extension frame; 606. Push rod; 607. Telescopic sleeve; 608. Cylinder; 609. Stabilizing block. Detailed Implementation

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

[0021] Automatic cable retraction and deployment devices for mining are a core component of mine electromechanical integration technology, and their development is directly related to the level of mine automation and safety standards. Early mines used manual cable dragging, which resulted in low efficiency (only 30-50 meters / hour) and high cable wear (replacing cables 2-3 times per year). With the increase in the power of fully mechanized mining equipment (e.g., coal mining machines above 300kW require 70mm...),... 2 For cross-sectional cables, traditional manual methods can no longer meet the needs of moving heavy cables (weighing over 60 catties per meter).

[0022] Features

[0023] The height can be adjusted by hydraulic lifting or electric push rod to accommodate cable reels of different sizes.

[0024] The cable is wound and unwound synchronously using a bidirectional screw or pulley system, avoiding wear caused by manual dragging. A magnetic sensor is equipped to monitor cable tension in real time, automatically alarming and shutting down in case of abnormalities.

[0025] Application advantages

[0026] It reduces manual labor intensity by more than 60% and solves the problem of moving heavy cables (such as 60 catties / m tunneling machine cables).

[0027] Reduce cable scratch accidents by 80% and extend cable service life.

[0028] Supports 360° rotating power supply to ensure continuous operation of mining equipment.

[0029] Technological Evolution

[0030] Early devices relied on manual operation (such as jack adjustment).

[0031] The new device integrates modules such as electric actuators and intelligent detection to achieve precise limit positioning and automated control.

[0032] Some systems are modified from discarded pulleys, resulting in reduced costs but significant improvements.

[0033] Typical applications include power supply systems for underground electric loaders, mine shuttle cars, and tunneling equipment. These devices have become key infrastructure for modern mine automation and safe production.

[0034] After 2000, China began to introduce electric reel technology, which uses a worm gear mechanism to achieve basic cable winding and unwinding functions. However, this technology has drawbacks such as poor cable routing accuracy (offset ±15cm) and unstable tension control (fluctuation range ±20%). Since 2015, the integration of explosion-proof design and intelligent sensing technology has propelled mining cable winding and unwinding devices into a stage of electromechanical-hydraulic integration.

[0035] Dynamic environment adaptability bottleneck

[0036] Insufficient response under extreme conditions

[0037] The existing equipment, operating in a wide temperature range of -30℃ to 60℃, suffers from viscosity variations in the hydraulic system that cause tension fluctuations of up to ±25%, which cannot meet the needs of high-altitude / high-temperature mines.

[0038] Coal dust concentration > 200 mg / m³ 3 At that time, the error rate of the laser rangefinder sensor rose to 35%, and the risk of failure of the correction system increased significantly.

[0039] Insufficient adaptability to long-distance working conditions

[0040] When the existing device operates at a power supply distance of over 500 meters, the tension gradient caused by the cable's own weight (with a difference of up to 150 kg between the beginning and end) can easily cause the servo motor to stall.

[0041] Under sudden load changes (such as an electric shovel sudden stop), the PID control delay reaches 0.5s, making it impossible to achieve millisecond-level response. (16. Defects in multi-source sensor fusion)

[0042] The difference in sampling frequency between vibration (1000Hz) and vision (10Hz) sensors leads to data fusion distortion. Coal dust concentration > 200mg / m³ 3 The error rate in laser ranging has risen to 35%.

[0043] II. Bottlenecks in Mechanical Structure Reliability

[0044] Lifespan constraints of key components

[0045] Polyurethane guide wheels have a wear cycle of only 3 months in gangue-containing environments.

[0046] The crack propagation rate at the weld joint of a stainless steel coil under alternating stress reached 0.2 mm / month.

[0047] Complex terrain matching defects

[0048] In inclined roadways with a slope greater than 15°, the cable slack exceeds the standard (maximum deviation 1.2m / 100m) due to the slippage of the traditional drum caused by its own weight.

[0049] Uneven base plate (difference > 300mm) causes roller module to be suspended in the air, increasing cable dragging wear rate by 400% 67. Bottleneck of intelligent control system

[0050] Multimodal cooperative control challenges

[0051] When the synchronization error between the retraction speed and the equipment travel speed is greater than 8%, it is easy to cause cable accumulation or over-tension breakage.

[0052] Existing PID algorithms have an adjustment delay of up to 0.5s under sudden load changes (such as an electric shovel sudden stop), which cannot achieve millisecond-level response.

[0053] Data fusion processing shortcomings

[0054] Poor interoperability of communication protocols between different manufacturers (such as Modbus and PROFINET), with a data packet loss rate >15%.

[0055] The difference in sampling frequency of data from multiple sources of sensors (vibration, vision, and tension) (10Hz vs 1000Hz) leads to distortion in the fusion decision.

[0056] Material and structural reliability bottlenecks

[0057] Lifespan constraints of key components

[0058] Existing polyurethane guide wheels have a wear cycle of only 3 months in environments containing gangue, and the replacement frequency far exceeds the design specifications.

[0059] Stainless steel coil weld joints are prone to fatigue cracks under alternating stress (10) 6 The crack propagation rate after one cycle is 0.2 mm / month.

[0060] Limitations of explosion-proof structure performance

[0061] The gap between traditional explosion-proof joint surfaces (≤0.2mm) expands to 0.5mm after frequent vibration, thus losing its explosion-proof performance.

[0062] Simple drag device

[0063] Structure: The passive tension system consists of a pulley block and a counterweight.

[0064] defect:

[0065] Dragging on the tunnel floor caused a 300% increase in the wear rate of the protective sleeve.

[0066] Sudden tensile impact (such as a shuttle train coming to an abrupt stop) can easily break the conductor.

[0067] When the leakage rate of an inert gas protection system is greater than 5% / 24h, the arc suppression effectiveness decreases by 60%.

[0068] Energy efficiency and maintenance bottlenecks.

[0069] There is insufficient room for energy consumption optimization.

[0070] Hydraulic drive systems have an efficiency of only 45%, consuming 30% more energy than electric servo solutions.

[0071] Under no-load conditions, the brake continuously consumes 22% of the total power.

[0072] Predictive maintenance is lacking.

[0073] Existing vibration monitoring systems can only identify bearing defects larger than 2mm, and cannot provide early warnings of failures.

[0074] Cable insulation aging detection relies on manual inspection.

[0075] like Figures 1-5 As shown, the automatic cable retraction and deployment device for explosion-proof cables used in mines includes an explosion-proof cylinder 1, a cable conveying module 2, a cable rope 3, a tensioning and traction module 4, a pressure plate 5, and a cable combing module 6. The explosion-proof cylinder 1 is used to convey the explosion-proof cable rope 3 in the mine. The explosion-proof cylinder 1 is equipped with the cable conveying module 2 for automatically controlling the retraction and deployment of the cable rope 3. The cable conveying module 2 is equipped with the tensioning and traction module 4 for automatically controlling and adjusting the tension of the cable rope 3. The pressure plate 5 is located below the explosion-proof cylinder 1 to support the overall stability. The cable combing module 6 is located inside the cable conveying module 2 to prevent the cable rope 3 from tangling.

[0076] Please see Figures 2-4 In this embodiment, the cable conveying module 2 includes a roller 201, both ends of which are fitted with explosion-proof housings 202. A connecting shaft 209 is provided at the center of the roller 201, and a collar 207 is provided between the connecting shaft 209 and the explosion-proof housing 202. One end of the connecting shaft 209 is connected to a first drive motor 208, which drives the connecting shaft 209 to rotate the roller 201. An airbag shell 203 is provided inside the explosion-proof housing 202, and a gas space for storing inert gas to prevent electric arc is provided between the airbag shell 203 and the explosion-proof housing 202. The outer end of the explosion-proof housing 202 is connected to a filling box 204, and a metering solenoid valve 205 is provided at the center of the filling box 204. A filling pipe 206 is connected to the top of the filling box 204.

[0077] Please see Figures 3-4In this embodiment, the tensioning traction module 4 includes a rotating frame 401, a guide frame 402, and a swing frame 403. One end of the rotating frame 401 is connected to the guide frame 402, and the end of the guide frame away from the rotating frame 401 is connected to the swing frame 403. The rotating frame 401, guide frame 402, and swing frame 403 are all arranged in two parallel sets. A first winding bar 404, a second winding bar 417, and a third winding bar 418 are respectively passed through the two sets of rotating frames 401, guide frames 402, and swing frames 403. A connection is provided between the rotating frame 401 and the cable conveying module 2. A rotating frame 401 is provided, with a second drive motor 419 at one end. The second drive motor 419 drives the rotating frame 401 to adjust its position. Tube sleeves 411 are fitted onto the first winding bar 404, the second winding bar 417, and the third winding bar 418. A camera is located at the center of the guide frame 402. The camera contains a wireless module, a vibration sensor, and a warning light 405 that are electrically connected to each other. A nozzle 408 is passed through one end of the swing frame 403. The nozzle 408 contains a component that is electrically connected to the camera. A pressure pump is connected to the nozzle 408, which has several sets of spray holes 409 distributed on it. A fire hose is located at the bottom of the nozzle 408, and a first tightening bolt sleeve 410 is provided between the fire hose and the nozzle 408. A fourth drive motor 421 is provided between the rotating frame 401 and the guide frame 402. The fourth drive motor 421 drives the first winding rod 404 to rotate the rotating frame 401 and the guide frame 402. A third drive motor 420, connected to the second winding rod 417, is provided between the guide frame 402 and the swing frame 403. The second winding bar 417 drives the guide frame 402 and the swing frame 403 to swing. The guide frame 402 is connected to the side end of the first spring column 406. The first spring column 406 is equipped with a spring damper. The tube sleeve 411 is fitted with the second tightening bolt sleeve 412 on both sides. The tube sleeve 411 is equipped with the extension rod 413 on both sides. The end of the extension rod 413 away from the tube sleeve 411 is fitted with the steering rod 414. The middle part of the steering rod 414 is fitted with the main wheel 416. The two ends of the steering rod 414 are fitted with the auxiliary wheel 415.

[0078] Please see Figures 4-5In this embodiment, both sides of the pressure plate 5 are provided with brackets 506 that support the cable conveying module 2 upwards. The outer end of the bracket 506 is connected to a connecting sleeve 503. The center of the connecting sleeve 503 is provided with a second spring column 504. The second spring column 504 is provided with a spring damper inside. The bottom of the pressure plate 5 is connected to a segmented plate 501. Both ends of the segmented plate 501 are provided with pressure plates 505. Several sets of roller modules 502 are distributed at the bottom of the segmented plate 501 and the pressure plate 505. The cable combing module 6 includes an adjusting ring 601. The adjusting ring 601 is arranged in two sets opposite to each other. The side is covered with an anti-corrosion sleeve 602. Several sets of fixing rods 603 are arranged circumferentially on the inner side of the adjusting ring 601. A flexible ball 604 is connected to the end of the fixing rod 603 away from the adjusting ring 601. An extension frame 605 is connected to the outer end of the two sets of adjusting rings 601. A push rod 606 is passed through the end of the extension frame 605 away from the adjusting ring 601. A cylinder 608 is provided at one end of the push rod 606. A stabilizing block 609 is fixed to the bottom of the cylinder 608. Several sets of telescopic sleeves 607 that extend and retract with each other are provided between the two sets of push rods 606. The cylinder 608 drives the push rod 606 to adjust the adjusting ring 601 along the direction of the telescopic sleeve 607.

[0079] Cable laying stage: When the mining equipment moves away, the cable drag force causes the rotating frame 401 and guide frame 402 of the tensioning traction module 4 to move together. The third drive motor 420 adjusts the second winding bar 417 to release the cable. The camera monitors the tightness. When the limit is exceeded, the pressure pump starts the nozzle 408 for cooling.

[0080] Cable winding stage: When the equipment approaches, the first drive motor 208 drives the winding roller 201 to rotate and wind up the cable. At the same time, the fourth drive motor 421 corrects the cable position through the first winding bar 404 to prevent deviation.

[0081] Inert gas is continuously replenished through filling box 204 to ensure an oxygen-free environment inside explosion-proof cylinder 1; the cylinder 608 of cable combing module 6 pushes the adjusting ring 601 to extend and retract, the flexible ball 604 guides the cable to wind evenly, the roller module 502 of pressure plate 5 adapts to ground undulations, and the second spring column 504 buffers vibration; the spring damper of swing frame 403 counteracts the impact of cable swing and maintains stable tension.

[0082] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic cable retraction and deployment device for explosion-proof mining, comprising an explosion-proof cylinder (1); characterized in that: It also includes a cable conveying module (2), a cable rope (3), a tensioning and traction module (4), a pressure plate (5), and a cable combing module (6); an explosion-proof cylinder (1) is used for conveying the explosion-proof cable rope (3) in the mine. The explosion-proof cylinder (1) is equipped with a cable conveying module (2) for automatically controlling the cable rope (3). The cable conveying module (2) is equipped with a tensioning and traction module (4) for automatically controlling and adjusting the tension of the cable rope (3). The explosion-proof cylinder (1) is equipped with a pressure plate (5) for supporting the overall stability below. The cable conveying module (2) is equipped with a cable combing module (6) to prevent the cable rope (3) from being concentrated and tangled. The cable combing module (6) includes an adjusting ring (601), which is arranged in two sets opposite to each other. The outer side of the adjusting ring (601) is covered with an anti-corrosion sleeve (602). The inner side of the adjusting ring (601) is provided with several sets of fixing rods (603). The end of the fixing rod (603) away from the adjusting ring (601) is connected to a flexible ball (604). The outer ends of the two sets of adjusting rings (601) are connected to an extension frame (605). The end of the extension frame (605) away from the adjusting ring (601) is provided with a push rod (606). One end of the push rod (606) is provided with a cylinder (608). The bottom of the cylinder (608) is fixed with a stabilizing block (609). Several sets of telescopic sleeves (607) that extend and retract with each other are provided between the two sets of push rods (606). The cylinder (608) drives the push rod (606) to drive the adjusting ring (601) to adjust along the direction of the telescopic sleeve (607).

2. The automatic retracting and extending device for explosion-proof cables in mining according to claim 1, characterized in that, The cable conveying module (2) includes a roller (201), both ends of which are fitted with explosion-proof housings (202). A connecting shaft (209) is provided at the center of the roller (201). A collar (207) is provided between the connecting shaft (209) and the explosion-proof housing (202). One end of the connecting shaft (209) is connected to a first drive motor (208). The first drive motor (208) drives the connecting shaft (209) to drive the roller (201) to rotate.

3. The automatic retracting and extending device for explosion-proof cables in mining according to claim 2, characterized in that, An airbag shell (203) is provided on the inner side of the explosion-proof housing (202). A gas space for storing inert gas to prevent electric arc is provided between the airbag shell (203) and the explosion-proof housing (202). A filling box (204) is connected to the outer end of the explosion-proof housing (202). A metering solenoid valve (205) is provided in the center of the filling box (204). A filling pipe (206) is connected to the top of the filling box (204).

4. The automatic retracting and extending device for explosion-proof cables in mining according to claim 1, characterized in that, The tensioning traction module (4) includes a rotating frame (401), a guide frame (402), and a swing frame (403). One end of the rotating frame (401) is connected to the guide frame (402), and the end of the guide frame away from the rotating frame (401) is connected to the swing frame (403). The rotating frame (401), guide frame (402), and swing frame (403) are all arranged in two parallel sets. A first winding bar (404), a second winding bar (417), and a third winding bar (418) are respectively passed between the two sets of rotating frames (401), guide frames (402), and swing frames (403). A rotating frame (401) is provided between the rotating frame (401) and the cable conveying module (2). A second drive motor (419) is provided at one end of the rotating frame (401). The drive motor (419) drives the rotating frame (401) to adjust the frame (401). The first winding bar (404), the second winding bar (417) and the third winding bar (418) are all fitted with sleeves (411). The guide frame (402) has a camera at its center. The camera has a wireless module, a vibration sensor and a warning light (405) that are electrically connected to each other. One end of the swing frame (403) is fitted with a nozzle (408). The nozzle (408) has a pressure pump that is electrically connected to the camera. Several sets of spray holes (409) are distributed on the nozzle (408). The bottom of the nozzle (408) is fitted with a fire pipe. The fire pipe and the nozzle (408) are fitted with a first loosening bolt sleeve (410).

5. The automatic retracting and extending device for explosion-proof cables in mining according to claim 4, characterized in that, A fourth drive motor (421) is provided between the rotating frame (401) and the guide frame (402). The fourth drive motor (421) drives the first winding bar (404) to rotate the rotating frame (401) and the guide frame (402). A third drive motor (420) connected to the second winding bar (417) is provided between the guide frame (402) and the swing frame (403). The third drive motor (420) drives the second winding bar (417) to swing the guide frame (402) and the swing frame (403). A first spring column (406) is connected to the side end of the guide frame (402). A spring damper is provided inside the first spring column (406).

6. The automatic retracting and extending device for explosion-proof cables in mining according to claim 4, characterized in that, The sleeve (411) is fitted with a second tightening bolt sleeve (412) on both sides. The sleeve (411) is fitted with an extension rod (413) on both sides. The end of the extension rod (413) away from the sleeve (411) is fitted with a steering rod (414). The steering rod (414) is fitted with a main wheel (416) in the middle. The steering rod (414) is fitted with auxiliary wheels (415) at both ends.

7. The automatic retracting and extending device for explosion-proof cables in mining according to claim 1, characterized in that, Both sides of the pressure plate (5) are provided with brackets (506) that support the cable conveying module (2) upward. The outer end of the bracket (506) is connected to a connecting sleeve (503). The center of the connecting sleeve (503) is provided with a second spring column (504). The inside of the second spring column (504) is provided with a spring damper. The bottom of the pressure plate (5) is connected to a segment plate (501). Both ends of the segment plate (501) are provided with pressure plates (505). Several sets of roller modules (502) are distributed at the bottom of the segment plate (501) and the pressure plate (505).

Images