A safety monitoring camera for coal mines underground

Abstract

The present invention discloses a safety monitoring camera for coal mines, belonging to the technical field of mine safety devices; it includes a camera body and an angle bracket. A fixed bracket is installed on one side of the angle bracket, and a lifting mechanism for driving the camera body to lift is installed on the fixed bracket; an induction component and a detection module are fixedly installed in the camera body; during the descending process of the camera body, through the induction component, the cable exposed in the mine and the cable completely stored in the cable drum are pulled, so that the cable exposed in the mine can be pulled into the camera body by the rotating drum, and the integrity of the cable skin is detected by the rolling balls of the detection module sliding on the cable surface; the maintenance and replacement efficiency of the vulnerable parts of the camera body by workers in the mine is improved; the problem of inconvenience caused by the all-round inspection and replacement of the underground camera is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of mine safety devices, and particularly relates to a safety monitoring camera for coal mines underground. Background Art

[0002] The safety monitoring camera for coal mines underground mainly uses a camera module to collect images and realizes real-time monitoring of the underground environment. Due to the harsh environment in coal mines, the camera needs to have functions such as explosion-proof, high and low temperature resistance, dust and humidity resistance, and shock resistance. For example, the intrinsically safe mine camera contains a camera module and an integrated circuit board inside, which can record and transmit high-quality images, and monitor the operation of mine equipment, areas where personnel are prohibited from entering in the mining area, and mine working areas. The outside is a sealed structure composed of stainless steel or aluminum alloy, which has good dust, water and impact resistance functions.

[0003] However, due to the harsh environment in the mine, it will still increase the failure rate of the camera, such as vulnerable batteries, cables, lenses, etc., which need to be regularly checked and replaced by workers. To ensure that the field of view of the camera can cover the areas that need to be monitored and avoid blind spots, the camera is usually installed at a high position on the shaft wall, and an expansion bolt is used to fix the fixing bracket on the shaft wall, and then a locknut is used to fix the camera on the fixing bracket, and then the power cord and data cable are fixedly inserted.

[0004] When workers are performing inspection work, they usually need to use heightening equipment to conduct a comprehensive inspection and maintenance of the camera. However, the terrain of the passage in the mine is rough and mostly narrow passages, and the heightening operation restricts the movement space of workers, causing inconvenience in comprehensively inspecting and replacing the vulnerable parts of the camera. Summary of the Invention

[0005] The present invention overcomes the deficiencies of the prior art and provides a safety monitoring camera for coal mines underground. The present invention is realized through the following technical solutions:

[0006] A safety monitoring camera for coal mines underground includes a camera main body and angle brackets installed on both sides of the camera main body. A fixing bracket is installed on one side of the angle bracket, and a cable is installed at one end of the camera main body. A lifting mechanism for driving the camera main body to lift is installed on the fixing bracket; the lifting mechanism is connected to the angle bracket through a chain;

[0007] An induction component and a detection module are fixedly installed inside the camera main body;

[0008] The induction component includes a fixed plate, a movable plate, a first spring, an opposite-pole magnet, a second motor and a rotating drum; the fixed plate is fixedly connected to the camera body, and the movable plate is slidably connected to the camera body; the movable plate and the fixed plate are connected by a first spring, and the surfaces of the fixed plate and the movable plate opposite to each other are provided with electrode contacts and opposite-pole magnets; and the two electrode contacts are positioned relative to each other, and the two opposite-pole magnets are positioned relative to each other; a wire hole 1 is provided on the movable plate, and a wire hole 2 is provided on the side wall of the camera body; a through hole is provided on the fixed plate; a rotating drum is rotatably connected to the camera body, and a second motor is fixedly installed in the camera body, and the driving shaft of the second motor is connected to the rotating drum; one end of the cable passes through the wire hole 2, the fixed plate and the rotating drum in sequence The through hole on the fixed plate and the first wire hole are wound on the rotating drum; the electrode contact is electrically connected to the second motor; a first torsion spring is fixedly connected to one side of the rotating drum, and one end of the first torsion spring is fixedly connected to the camera body; the outer wall of the lifting mechanism is connected to a wire drum, and a wire winding post is rotatably connected inside the wire drum; the other end of the cable passes through the wire drum and is wound around the wire winding post; one end of the wire winding post is fixedly connected to the second torsion spring, and one end of the second torsion spring is fixedly connected to the wire drum; two round blocks are fixedly connected to the surface of the cable, and when the cable is in a reeled state, one round block is located on a side close to the outer wall of the wire drum, and the other round block is located on a side close to the rotating drum; the diameter of the round block is larger than the inner diameter of the first wire hole and smaller than the inner diameter of the second wire hole;

[0009] The detection module includes a circular ring, a positioning rod, a tension spring, a circle and a ball; a circular ring is rotatably connected to the side wall of the camera body, and the second wire hole is located in the middle of the circular ring. Multiple positioning rods are slidably connected in the circular ring, and one end of the multiple positioning rods extends into and is close to the middle of the second wire hole; a tension spring is fixedly sleeved on the surface of the positioning rod, one end of the tension spring is fixedly connected to the circular ring, and a round rod is fixedly connected to one side of the positioning rod, and the end of the round rod extends into the inner side of the second wire hole; the interior of the round rod is a hollow structure, the length of the round rod is less than the length of the positioning rod, and ink for marking is provided inside the round rod, the positioning rod and the end of the round rod close to the second wire hole are both slidably connected with ball bearings, and the ball bearings at one end of the round rod and the positioning rod are not located on the same circular surface.

[0010] Furthermore, the first winding post is fixedly connected to the second winding post; the other end of the cable is passed through the wire drum and wound around the first winding post and the second winding post, and the winding directions of the cable on the first winding post and the second winding post are opposite.

[0011] Furthermore, the lifting mechanism includes an installation cabin fixedly connected to one side of the fixed bracket, a first motor is fixedly connected in the installation cabin, a worm is fixedly connected to one end of the output shaft of the first motor, a worm wheel is meshed with the surface of the worm, and a first gear is fixedly connected to one side of the worm wheel; the chain is meshed with the first gear.

[0012] Further, two sets of slide rails are symmetrically and fixedly connected inside the installation cabin. A guiding block is fixedly connected to the middle of the two sets of slide rails. The two sets of slide rails converge and communicate at the connection; and a chain is respectively slidably connected inside each slide rail; the chain on the side adjacent to the first gear meshes with the first gear, and a first pawl is fixedly connected to one side of a single link of one chain, and a second pawl is fixedly connected to one side of a single link of the other chain. The first pawl and the second pawl mesh with each other at the connection. The bottom ends of the two chains penetrate to the outside of the installation cabin and are fixedly connected to the angle bracket.

[0013] Furthermore, the overall shape of a single set of slide rails is in a figure-eight spiral shape.

[0014] Further, a sliding module for driving the drum to wind the cable is provided between the drum and the output shaft of the second motor.

[0015] Furthermore, the sliding module includes a straight groove, a driving rod, a driven cylinder, a rectangular block, a limiting block, a return spring, and a guide rod; a plurality of straight grooves are opened at the upper end of the drum, the output end of the second motor is fixedly connected with a driving rod, the surface of the driving rod is slidably connected with a driven cylinder, the driven cylinder is located on one side of the drum, one end of the driven cylinder is fixedly connected with a plurality of rectangular blocks, the rectangular blocks are slidably connected with the straight grooves, two limiting grooves are symmetrically opened inside the driven cylinder, and a limiting block that slides in the limiting grooves is fixedly connected to the surface of the driving rod. A return spring is provided between the driven cylinder and the driving rod; two guide rods are symmetrically and fixedly connected to the side surface of the driving rod, a fixed cylinder is fixedly connected inside the camera body, a circulation groove and a guiding groove are opened inside the fixed cylinder, the guide rods are slidably connected with the circulation groove and the guiding groove, the circulation groove is located on the upper and lower sides of the inner wall of the fixed cylinder and is circular as a whole, and the guiding groove connects the two circulation grooves, so that the guide rods reciprocate in the two circulation grooves.

[0016] Further, a toothed ring is fixedly connected to the side surface of the ring. An electric telescopic rod is fixedly connected inside the camera body. The output end of the electric telescopic rod is fixedly connected with a gear plate. The gear plate meshes with the toothed ring. The electrode contact is electrically connected to the electric telescopic rod; when the two electrode contacts are in contact and fit, an input power supply is provided for the electric telescopic rod, and the electric telescopic rod performs a reciprocating telescopic motion, so that the gear plate drives the toothed ring and the ring to rotate reciprocally in the wire hole two, and the ball at one end of the positioning rod makes an arc sliding motion on the surface of the cable.

[0017] Further, the fixed bracket is fixed to the inner wall of the mine through expansion bolts.

[0018] The beneficial effects of the present invention compared with the prior art are as follows:

[0019] The present invention forms a rigid chain with high rigidity by arranging two claws on one side of the chain to mesh with each other, thereby driving the camera body to descend in height on the inner wall of the mine, avoiding the need for workers to carry climbing tools to perform climbing operations in narrow mines, facilitating the workers' inspection and replacement of wearing parts of the camera body, and improving the safety of workers when working in mines.

[0020] During the descent of the camera body, a sliding module and a sensing component are set up to pull the cables exposed in the mine and the cables completely stored in the drum, so that the cables exposed in the mine can be pulled into the camera body by the rotating drum, and the integrity of the surface is detected by sliding the ball of the detection module on the surface of the cable; when the camera body stops descending in the mine, the red ink inside the cable is smeared on the damaged part by sliding the ball at one end of the round rod on the surface of the cable. Workers can discover the marked parts at the first time and conduct a second inspection to confirm, which improves the efficiency of workers in the inspection and replacement of wearing parts of the camera body in the mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall side sectional structure of the present invention;

[0023] Figure 3 for Figure 2 A magnified schematic diagram of the structure in the middle;

[0024] Figure 4 for Figure 2 A magnified schematic diagram of the structure B in the middle;

[0025] Figure 5 This is a schematic diagram of the rectangular block structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the side cross-sectional structure of the rotary drum of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the movable plate and the fixed plate of the present invention;

[0028] Figure 8 Schematic diagram of the internal structure of the ring of the present invention;

[0029] Figure 9 This is a schematic structural diagram of the gear ring and the electric telescopic rod of the present invention;

[0030] Figure 10 This is a schematic diagram of the two-dimensional structure of the installation cabin of the present invention;

[0031] Figure 11 for Figure 10 Enlarged schematic diagram of the C structure in the middle.

[0032] In the picture:

[0033] 1. Camera body; 101. Angle bracket; 102. Fixed bracket; 103. Cable;

[0034] 2. Lifting mechanism; 201. Mounting cabin; 202. First motor; 203. Worm; 204. Worm gear; 205. First gear; 206. Slide rail; 207. Guide block; 208. Chain; 209. Claw 1; 210. Claw 2;

[0035] 3. Induction assembly; 301. Fixed plate; 302. Moving plate; 303. First spring; 304. Electrode contact; 305. Opposite magnet; 306. Wire hole 1; 307. Round block; 308. Second motor; 309. Rotating drum; 310. First torsion spring; 311. Wire drum; 312. Wire winding post 1; 313. Wire winding post 2; 314. Second torsion spring;

[0036] 4. Detection module; 401. Wire hole 2; 402. Ring; 403. Positioning rod; 404. Tension spring; 405. Round rod; 406. Ball;

[0037] 5. Sliding module; 501. Straight groove; 502. Driving rod; 503. Driven cylinder; 504. Rectangular block; 505. Limiting groove; 506. Limiting block; 507. Return spring; 508. Guide rod; 509. Fixed cylinder; 510. Circulation groove; 511. Guide groove;

[0038] 6. Gear ring; 7. Electric telescopic rod; 8. Gear plate. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. The technical solutions of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0040] See also Figures 1 to 11, this embodiment proposes a safety monitoring camera for underground coal mines, which includes a camera main body 1 and angle brackets 101 installed on both sides of the camera main body 1. A fixed bracket 102 is installed on one side of the angle bracket 101, and a cable 103 is installed at one end of the camera main body 1. An elevating mechanism 2 for driving the camera main body 1 to lift is installed between the fixed bracket 102 and the angle bracket 101. The camera main body 1 is a sealed structure composed of aluminum alloy or stainless steel, with high corrosion resistance to adapt to the harsh environment in the mine. Workers use expansion bolts to fix the fixed bracket 102 at a higher position on the inner wall of the mine, so as to ensure that the core of the camera main body 1 can capture a complete area.

[0041] Among them, the elevating mechanism 2 includes an installation cabin 201 fixedly connected to one side of the fixed bracket 102. A first motor 202 is fixedly connected inside the installation cabin 201. One end of the output shaft of the first motor 202 is fixedly connected with a worm 203. A worm gear 204 is meshed on the surface of the worm 203. A first gear 205 is fixedly connected to one side of the worm gear 204; the first motor 202 can be remotely controlled by workers to continuously rotate the output shaft and the worm 203 clockwise. The worm gear 204 can only be driven by the meshing of the worm 203 and has a certain self-locking property, so as to control the rotation direction and speed of the first gear 205; Two groups of slide rails 206 are symmetrically and fixedly connected inside the installation cabin 201. Each group of slide rails 206 is in a shape of a looped spiral and has a guiding function; A guiding block 207 is fixedly connected to the middle of the two groups of slide rails 206. The two groups of slide rails 206 converge and communicate at the connection; And a chain 208 is slidably connected inside each group of slide rails 206. Among them, the chain 208 on the side adjacent to the first gear 205 meshes with the first gear 205. One side of a single link of one chain 208 is fixedly connected with a claw one 209, and one side of a single link of the other chain 208 is fixedly connected with a claw two 210. The claw one 209 and the claw two 210 mesh with each other at the connection. The bottom ends of the two chains 208 penetrate outside the installation cabin 201 and are fixedly connected with the angle bracket 101.

[0042] Due to the meshing of the claw one 209 and the claw two 210, the two chains 208 form a rigid chain with a certain hardness. The rigid chain has characteristics such as high rigidity, high precision, high strength, wear resistance and corrosion resistance, and can support the camera main body 1 and the angle bracket 101 to make lifting movements in the mine. At the same time, when the two chains 208 move in opposite directions inside the slide rails 206, the meshed claw one 209 and claw two 210 will separate under the action of the guiding block 207, so that the two chains 208 enter the corresponding slide rails 206 respectively; The chain 208 moves along the looped slide rail 206, which can reduce the volume of the chain 208 when it is stored and improve the utilization rate of the space inside the installation cabin 201.

[0043] When the camera body 1 needs to be lowered, the first motor 202 can be manually controlled by remote control to rotate clockwise, and the first motor 202, worm 203 and worm wheel 204 drive the first gear 205 to rotate clockwise, thereby driving the two chains 208 to move downward in the installation cabin 201, and can drive the camera body 1 to descend through the angle bracket 101; similarly, when the camera body 1 needs to be lifted, the first gear 205 is rotated counterclockwise, thereby driving the camera body 1 to rise; since the camera body 1 can move up and down, it is convenient for workers to repair and replace the wearing parts of the camera body 1 in a narrow mine.

[0044] A sensor assembly 3 for reeling in the cable 103 is fixedly mounted within the camera body 1. When the camera body 1 moves downward within the mine, the sensor assembly 3 is triggered to operate, extending the cable 103. When the camera body 1 moves upward within the mine, the sensor assembly 3 reels the cable 103. Also mounted within the camera body 1 is a detection module 4 for detecting the integrity of the cable 103's surface. Working in conjunction with the sensor assembly 3, the detection module 4 can inspect the integrity of the cable 103's surface during extension or reeling, determining whether any portion of the cable 103 is damaged.

[0045] Specifically, the induction component 3 includes a fixed plate 301, a movable plate 302, a first spring 303, an opposite magnet 305, a second motor 308, a rotating drum 309, a bobbin 311, a winding post 1 312 and a winding post 2 313; the fixed plate 301 is fixedly connected to the camera body 1, and the movable plate 302 is slidably connected to the camera body 1; the movable plate 302 is arranged opposite to the fixed plate 301, and the movable plate 302 and the fixed plate 301 are made of a material that does not generate static electricity. The movable plate 302 and the fixed plate 301 are connected by the first spring 303, and the fixed plate 301 and the movable plate 302 are opposite to each other. Electrode contacts 304 and opposite-pole magnets 305 are provided on the surfaces of one side of the pair; the two electrode contacts 304 are positioned opposite to each other, and the two opposite-pole magnets 305 are positioned opposite to each other; the two electrode contacts 304 are the positive and negative poles of the power supply; a wire hole 1 306 is provided on the movable plate 302, and a wire hole 2 401 is provided on the side wall of the camera body 1; a through hole is provided on the fixed plate 301; a rotating drum 309 is rotatably connected to the camera body 1, and a second motor 308 is fixedly installed in the camera body 1, and the drive shaft of the second motor 308 is connected to the rotating drum 309; the electrode contacts 304 are electrically connected to the second motor 308.

[0046] One end of the cable 103 sequentially passes through the second wire hole 401, the through hole in the fixing plate 301, and the first wire hole 306, and then winds around the rotating cylinder 309; when the second motor 308 is powered on, it drives the rotating cylinder 309 to rotate to wind and reel in the cable 103; one side of the rotating cylinder 309 is fixedly connected with a first torsion spring 310, and one end of the first torsion spring 310 is fixedly connected with the camera body 1.

[0047] One side of the installation cabin 201 is fixedly connected with a wire reel 311. A first winding post 312 is rotatably connected inside the wire reel 311. The first winding post 312 is fixedly connected with a second winding post 313. The other end of the cable 103 penetrates into the wire reel 311 and is wound and connected to the first winding post 312 and the second winding post 313. One end of the first winding post 312 is fixedly connected with a second torsion spring 314, and one end of the second torsion spring 314 is fixedly connected with the wire reel 311; the winding directions of the cable 103 on the first winding post 312 and the second winding post 313 are opposite. When the first winding post 312 and the second winding post 313 rotate, the cable 103 inside the wire reel 311 can move in two directions at the same time, which can provide enough length for the downward movement of the camera body 1.

[0048] Two round blocks 307 are fixedly connected to the surface of the cable 103. When the cable 103 is in the retracted state, that is, when the camera body 1 is in the working state at a certain height, one round block 307 is located on the side close to the outer wall of the wire reel 311, and the other round block 307 is located on the side close to the rotating cylinder 309; the diameter of the round block 307 is larger than the inner diameter of the first wire hole 306 and smaller than the inner diameter of the second wire hole 401.

[0049] In the initial state, both the first torsion spring 310 and the second torsion spring 314 are in a static state. A small amount of cable 103 is wound around the surface of the drum 309. A large amount of complete cable 103 is wound around the surfaces of the first cable winding post 312 and the second cable winding post 313. Two round blocks 307 on the cable 103 are respectively close to the drum 309 and the bobbin 311. The first spring 303 is in a relaxed state. There is a certain distance between the moving plate 302 and the fixed plate 301, and the electrode contacts 304 between them do not contact, and the attracting force is not generated between the opposite magnets 305 between them. When the camera body 1 moves downward in the mine, the camera body 1 pulls the cable 103 downward. At this time, the cable 103 will form a pulling force on the drum 309, the first cable winding post 312, and the second cable winding post 313. A part of the cable 103 on the drum 309 begins to separate from the surface of the drum 309. And the round block 307 is larger than the inner diameter of the first wire hole 306. While the cable 103 moves outside the camera body 1, the round block 307 on the side close to the drum 309 will squeeze and push the first wire hole 306 and the moving plate 302, so that the two electrode contacts 304 contact. When the electrode contacts 304 contact, the power supply is turned on, and the second motor 308 is powered on and can continue to work. And the two opposite magnets 305 attract each other, so that the two electrode contacts 304 maintain good contact. Similarly, when the electrode contacts 304 separate, the second motor 308 stops working. When the second motor 308 works, it drives the drum 309 to reverse and compress the first torsion spring 310, and the first cable winding post 312 and the second cable winding post 313 rotate and compress the second torsion spring 314. The complete cable 103 wound around the first cable winding post 312 and the second cable winding post 313 is pulled out from the bobbin 311 and provides enough complete cable 103 for the downward movement of the camera body 1. And a part of the cable 103 that has been exposed in the mine for a long time (that is, a section of the cable 103 below the round block 307 close to the bobbin 311) is pulled into the camera body 1 through the second wire hole 401. During the pulling process, the integrity of the skin of this part of the cable 103 can be detected by the detection module 4, which improves the working speed of workers for repairing and replacing the vulnerable parts of the camera body 1 in the narrow mine and reduces the working hours of workers in the narrow mine.

[0050] A sliding module 5 for driving the drum 309 to wind the cable 103 is provided between the drum 309 and the output shaft of the second motor 308, which can accurately drive the drum 309 to wind a section of the cable 103 that was previously exposed in the mine, preventing the output shaft of the second motor 308 from being driven to rotate passively by the cable 103 when the drum 309 is pulled, thereby affecting the function of the second motor 308.

[0051] The sliding module 5 includes a straight groove 501, a driving rod 502, a driven cylinder 503, a rectangular block 504, a limiting block 506, a return spring 507 and a guide rod 508; a plurality of straight grooves 501 are formed at the upper end of the rotary cylinder 309, the output end of the second motor 308 is fixedly connected with a driving rod 502, the surface of the driving rod 502 is slidably connected with a driven cylinder 503, the driven cylinder 503 is located on one side of the rotary cylinder 309, one end of the driven cylinder 503 is fixedly connected with a plurality of rectangular blocks 504, the rectangular blocks 504 are slidably connected with the straight grooves 501, two limiting grooves 505 are symmetrically formed in the driven cylinder 503, the surface of the driving rod 502 is fixedly connected with a limiting block 506 that slides in the limiting grooves 505, and a return spring 507 is arranged between the driven cylinder 503 and the driving rod 502; two guide rods 508 are symmetrically and fixedly connected to the side surface of the driving rod 502, a fixed cylinder 509 is fixedly connected inside the camera body 1, a circulation groove 510 and a guiding groove 511 are formed in the fixed cylinder 509, the guide rods 508 are slidably connected with the circulation groove 510, the circulation groove 510 is located on the upper and lower sides of the inner wall of the fixed cylinder 509 and is circular as a whole, the guiding groove 511 can connect the two circulation grooves 510, so that the guide rods 508 can reciprocate in the two circulation grooves 510, and the guide rods 508 can drive the driven cylinder 503 to approach the rotary cylinder 309. When the straight groove 501 contacts the rectangular block 504, the rotary cylinder 309 can be driven to rotate by the output shaft of the second motor 308 to wind up the cable 103, the driving rod 502 can drive the driven cylinder 503 to rotate, and at the same time, the limiting rods on both sides of the surface of the driven cylinder 503 can slide in the limiting grooves 505, so that the driven cylinder 503 linearly slides on the surface of the driving rod 502, and the rectangular block 504 at one end of the driven cylinder 503 is butted and engaged with the straight groove 501 at one end of the rotary cylinder 309.

[0052] In the working state, when the two electrode contacts 304 are in close contact and provide input power to the second motor 308, the second motor 308 drives the driving rod 502 and the driven cylinder 503 to rotate, and the guide rod 508 on the surface of the driven cylinder 503 will slide in the first circulation groove 510, and when the guide rod 508 enters another circulation groove 510 through the guiding groove 511, the guide rod 508 drives the driven cylinder 503 and the rectangular block 504 to be butted and engaged with the straight groove 501 on one side of the rotary cylinder 309. At this time, the second motor 308 can normally drive the rotary cylinder 309 to rotate to wind up the cable 103, and actively pull the cable 103 exposed in the mine into the camera body 1 and check the integrity of its epidermis.

[0053] The detection module 4 includes a circular ring 402, a positioning rod 403, a tension spring 404, a round rod 405, and a ball 406; a circular ring 402 is rotatably connected inside the side wall of the camera body 1, and the circular ring 402 can rotate within the camera body 1. The second wire hole 401 is located in the middle of the circular ring 402. A plurality of positioning rods 403 are slidably connected inside the circular ring 402, and one end of the plurality of positioning rods 403 extends into and approaches the middle of the second wire hole 401; a tension spring 404 is fixedly sleeved on the surface of the positioning rod 403, one end of the tension spring 404 is fixedly connected to the circular ring 402, and a round rod 405 is fixedly connected to one side of the positioning rod 403. Similarly, the end of the round rod 405 also extends into the inner side of the second wire hole 401; the inside of the round rod 405 is a hollow structure, the length of the round rod 405 is less than the length of the positioning rod 403, and red ink is provided inside the round rod 405. A ball 406 is slidably connected to one end of both the positioning rod 403 and the round rod 405 close to the second wire hole 401, and the ball 406 at one end of the round rod 405 and the ball 406 at one end of the positioning rod 403 are not located on the same circular surface.

[0054] Under the action of the tension spring 404, one end of the plurality of positioning rods 403 can gradually approach each other. When the cable 103 passes through the approximate circle formed by the plurality of positioning rods 403, it can exert a pressure on one end of the positioning rod 403, so that one end of the positioning rod 403 is in close contact with the surface of the cable 103; when the cable 103 moves in the second wire hole 401, the ball 406 at one end of the positioning rod 403 slides on the surface of the cable 103 to detect whether there is damage on the surface of the cable 103; when there is damage on the surface of the cable 103, the damaged part with the upturned skin will squeeze the positioning rod 403, so that the ball 406 at one end of the round rod 405 contacts the damaged position and smears the internal red ink on the surface of the damaged part, thus facilitating the worker to directly observe the red ink, reminding the worker to conduct a secondary inspection and maintenance work on this position, thereby improving the working efficiency of the worker in overhauling the vulnerable parts of the camera body 1 in the mine.

[0055] A toothed ring 6 is fixedly connected to the side surface of the circular ring 402, an electric telescopic rod 7 is fixedly connected inside the camera body 1, a gear plate 8 is fixedly connected to the output end of the electric telescopic rod 7, the gear plate 8 meshes with the toothed ring 6, and the electrode contact 304 is electrically connected to the electric telescopic rod 7; when the two electrode contacts 304 are in contact and fit, an input power supply is provided for the electric telescopic rod 7, and the electric telescopic rod 7 will drive its output end to perform a reciprocating telescopic motion, so that the gear plate 8 at one end of its output end drives the toothed ring 6 and the circular ring 402 to rotate reciprocally in the second wire hole 401, so that the ball 406 at one end of the positioning rod 403 slides in an arc on the surface of the cable 103, which is beneficial to improving the accuracy of the positioning rod 403 in detecting the integrity of the cable 103 skin and facilitating the improvement of the safety of the camera body 1 in the harsh environment of the mine.

[0056] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific embodiments of the present invention are limited thereto. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the present invention, several simple deductions or substitutions can still be made, which should all be regarded as falling within the scope of patent protection determined by the claims submitted for the present invention.

Claims

1. A safety monitoring camera for underground coal mines, comprising a camera main body (1) and angle brackets (101) installed on both sides of the camera main body (1). A fixed bracket (102) is installed on one side of the angle bracket (101), and a cable (103) is installed at one end of the camera main body (1), characterized in that, A lifting mechanism (2) for driving the camera body (1) to move up and down is installed on the fixed bracket (102); the lifting mechanism (2) is connected to the angle bracket (101) via a chain (208); A sensing component (3) and a detection module (4) are fixedly installed in the camera body (1); The induction component (3) includes a fixed plate (301), a movable plate (302), a first spring (303), an opposite magnet (305), a second motor (308) and a rotating drum (309); the fixed plate (301) is fixedly connected to the camera body (1), and the movable plate (302) is slidably connected to the camera body (1); the movable plate (302) and the fixed plate (301) are connected via the first spring (303), and the surfaces of the fixed plate (301) and the movable plate (302) on the side opposite to each other are provided with electrode contacts (304) and the opposite magnet (305). 5); and the two electrode contacts (304) are positioned relative to each other, and the two opposite magnets (305) are positioned relative to each other; a first wire hole (306) is provided on the movable plate (302), and a second wire hole (401) is provided on the side wall of the camera body (1); a through hole is provided on the fixed plate (301); a rotating drum (309) is rotatably connected in the camera body (1), a second motor (308) is fixedly installed in the camera body (1), and a driving shaft of the second motor (308) is connected to the rotating drum (309); one end of the cable (103) passes through the second wire hole (401) in sequence. ), the through hole on the fixing plate (301), the wire hole 1 (306) and then wound on the rotating drum (309); the electrode contact (304) is electrically connected to the second motor (308); a first torsion spring (310) is fixedly connected to one side of the rotating drum (309), and one end of the first torsion spring (310) is fixedly connected to the camera body (1); the outer wall of the lifting mechanism (2) is connected to the wire drum (311), and the wire drum (311) is rotatably connected to the winding post 1 (312); the other end of the cable (103) is inserted into the wire drum (311) and is wound and connected to the winding post 1 (312) ); one end of the winding column (312) is fixedly connected to the second torsion spring (314), and one end of the second torsion spring (314) is fixedly connected to the wire drum (311); two round blocks (307) are fixedly connected to the surface of the cable (103), and when the cable (103) is in the reeled state, one round block (307) is located on the side close to the outer wall of the wire drum (311), and the other round block (307) is located on the side close to the rotating drum (309); the diameter of the round block (307) is larger than the inner diameter of the wire hole (306) and smaller than the inner diameter of the wire hole (401); The detection module (4) includes a circular ring (402), a positioning rod (403), a tension spring (404), a round rod (405) and a ball (406); the circular ring (402) is rotatably connected inside the side wall of the camera body (1), and the second wire hole (401) is located in the middle of the circular ring (402). A plurality of positioning rods (403) are slidably connected inside the circular ring (402), and one end of the plurality of positioning rods (403) extends into and approaches the middle of the second wire hole (401); a tension spring (404) is fixedly sleeved on the surface of the positioning rod (403), one end of the tension spring (404) is fixedly connected to the circular ring (402), a round rod (405) is fixedly connected to one side of the positioning rod (403), and the end of the round rod (405) extends into the inner side of the second wire hole (401); the inside of the round rod (405) is a hollow structure, the length of the round rod (405) is less than the length of the positioning rod (403), and ink for marking is provided inside the round rod (405). Balls (406) are slidably connected to one ends of the positioning rod (403) and the round rod (405) close to the second wire hole (401), and the ball (406) at one end of the round rod (405) and the ball (406) at one end of the positioning rod (403) are not located on the same circular surface.

2. The safety monitoring camera for coal mine underground according to claim 1, characterized in that, The winding post one (312) is fixedly connected with the winding post two (313); the other end of the cable (103) is successively wound and connected to the winding post one (312) and the winding post two (313), and the winding directions of the cable (103) on the winding post one (312) and the winding post two (313) are opposite.

3. A safety monitoring camera for coal mines underground according to claim 1, characterized in that, The lifting mechanism (2) includes an installation cabin (2), fixedly connected to one side of the fixed bracket (102). A first motor (202) is fixedly connected inside the installation cabin (201), one end of the output shaft of the first motor (202) is fixedly connected with a worm (203), a worm gear (204) is meshed on the surface of the worm (203), and a first gear (205) is fixedly connected to one side of the worm gear (204); the chain (208) is meshed with the first gear (205).

4. The safety monitoring camera for coal mine underground according to claim 3, characterized in that, Two groups of slide rails (206) are symmetrically and fixedly connected inside the installation cabin (201). A wire guiding block (207) is fixedly connected to the middle of the two groups of slide rails (206), and the two groups of slide rails (206) converge and communicate at the connection; and a chain (208) is slidably connected inside each of the two groups of slide rails (206); the chain (208) on the side adjacent to the first gear (205) is meshed with the first gear (205), and a claw one (209) is fixedly connected to one side of a single link of one chain (208), and a claw two (210) is fixedly connected to one side of a single link of the other chain (208). The claw one (209) and the claw two (210) are meshed with each other at the connection. The bottom ends of the two chains (208) penetrate to the outside of the installation cabin (201) and are fixedly connected to the angle bracket (101).

5. The safety monitoring camera for coal mines underground according to claim 4, characterized in that The overall shape of a single group of slide rails (206) is a zigzag spiral shape.

6. The safety monitoring camera for coal mines according to claim 1, wherein A sliding module (5) for driving the drum (309) to wind the cable (103) is provided between the drum (309) and the output shaft of the second motor (308).

7. The safety monitoring camera for underground coal mines according to claim 6, wherein The sliding module (5) includes a straight groove (501), a driving rod (502), a driven cylinder (503), a rectangular block (504), a limiting block (506), a return spring (507) and a guide rod (508); a plurality of straight grooves (501) are opened at the upper end of the rotating cylinder (309), the output end of the second motor (308) is fixedly connected with a driving rod (502), the surface of the driving rod (502) is slidably connected with a driven cylinder (503), the driven cylinder (503) is located on one side of the rotating cylinder (309), one end of the driven cylinder (503) is fixedly connected with a plurality of rectangular blocks (504), the rectangular blocks (504) are slidably connected with the straight grooves (501), two limiting grooves (505) are symmetrically opened in the driven cylinder (503), and the surface of the driving rod (502) is fixedly connected with a limiting block (506) that slides in the limiting grooves (505), and a return spring (507) is arranged between the driven cylinder (503) and the driving rod (502); two guide rods (508) are symmetrically and fixedly connected to the side surface of the driving rod (502), a fixed cylinder (509) is fixedly connected in the camera body (1), a circulation groove (510) and a guide groove (511) are opened in the fixed cylinder (509), the guide rods (508) are slidably connected with the circulation groove (510), the circulation groove (510) is located on the upper and lower sides of the inner wall of the fixed cylinder (509) and is circular as a whole, and the guide groove (511) connects the two circulation grooves (510), so that the guide rods (508) reciprocate in the two circulation grooves (510).

8. A safety monitoring camera for coal mines underground according to claim 1, characterized in that, A toothed ring (6) is fixedly connected to the side surface of the ring (402), an electric telescopic rod (7) is fixedly connected in the camera body (1), the output end of the electric telescopic rod (7) is fixedly connected with a gear plate (8), the gear plate (8) meshes with the toothed ring (6), and the electrode contact (304) is electrically connected to the electric telescopic rod (7); when the two electrode contacts (304) are in contact and fit, an input power supply is provided for the electric telescopic rod (7), the electric telescopic rod (7) performs a reciprocating telescopic motion, so that the gear plate (8) drives the toothed ring (6) and the ring (402) to rotate reciprocally in the wire hole two (401), and the ball (406) at one end of the positioning rod (403) slides in an arc on the surface of the cable (103).

9. A safety monitoring camera for coal mines according to claim 1, characterized in that, The fixed bracket (102) is fixed to the inner wall of the mine through expansion bolts.

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