A mobile camera hanging device for use in a coal mine

Abstract

This utility model discloses a movable camera hoisting device for underground coal mines, relating to the technical field of camera hoisting devices for underground coal mines. It includes an anchor rod with a C-clamp clamped to it. The C-clamp has an opening at its upper end, and connecting plates are fixed to both sides of the opening. Tightening bolts are threaded through the connecting plates. A screw rod is screwed to the bottom of the C-clamp, and an inner tube is screwed to the bottom end of the screw rod. An outer tube is slidably sleeved at the lower end of the inner tube. This utility model, through the clamping action of the C-clamp and the anchor rod, and the tightening action of the tightening bolts, facilitates quick and easy device fixing without drilling or binding wire, improving installation convenience and achieving stable fixing without damaging the roof support structure. Simultaneously, the rubber anti-slip pad on the inner wall of the C-clamp and the abutment action of the anchor rod enhance friction, preventing loosening due to vibration or dust, improving fixing stability for long-term reliable fixing. Ultimately, it solves the problems of labor-intensive installation, damage to the support structure, and unstable fixing in traditional methods, improving installation efficiency and equipment safety.

Description

Technical Field

[0001] This utility model relates to the technical field of camera hanging devices for underground coal mines, and in particular to a mobile camera hanging device for underground coal mines. Background Technology

[0002] The coal mine's "no operation without video surveillance" policy requires that the work area (such as the tunneling face and coal mining face) must be covered by video in real time, so video surveillance equipment is needed to achieve real-time video coverage. Existing camera mounting equipment has several problems. Installation relies on drilling holes in the tunnel roof to install expansion bolts or binding wires to secure the supports. Drilling requires specialized equipment, is labor-intensive, and damages the roof support. The tightness of the binding wires is greatly affected by manual operation, and is easily loosened by underground vibrations and dust, leading to support displacement or even equipment falls, making it difficult to meet stable monitoring requirements. During relocation, the advance of the tunnel face and the retreat of the fully mechanized mining face require simultaneous relocation, necessitating the removal of bolts or binding wires, dismantling of the old frame, and reinstallation. This process interrupts monitoring and consumes time, affecting monitoring continuity and operational efficiency. Regarding angle adjustment, the support... Most traditional supports are rigid structures that only support vertical unidirectional height adjustment and cannot adjust horizontally. When the tunnel height changes or during upward or downward mining operations, the monitoring view is easily obstructed or deviates from the work area, affecting the monitoring effect. In terms of adaptability, the distribution and specifications of anchor bolts and steel strips on the tunnel top are uneven and vary. Traditional supports have a single fixing method that is only suitable for specific locations. When the support spacing is large or the anchor bolts are deviated from the required area, auxiliary structures or point adjustments are required, increasing costs and operational complexity, and making it difficult to adapt to diverse support environments. Therefore, improvements are needed to address the above problems. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a mobile camera hanging device for use in underground coal mines.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a movable camera hanging device for underground coal mines, comprising an anchor rod, a C-shaped clamp on the anchor rod, connecting plates fixed to both sides of the opening of the C-shaped clamp, a tightening bolt passing through the connecting plate, a screw rod screwed to the bottom surface of the C-shaped clamp, an inner tube screwed to the bottom end of the screw rod, an outer tube slidably sleeved at the lower end of the inner tube, an internally threaded tube at one point on the outer wall of the outer tube, a stud screwed into the internally threaded tube, a handwheel fixed to one end of the stud, a damping bearing rotatably mounted at the bottom end of the outer tube, a ball head coaxially fixed to the bottom end of the damping bearing, a ball socket wrapped around the lower end of the ball head, a mounting platform fixed to the bottom end of the ball socket, and a camera clamped to the bottom surface of the mounting platform.

[0005] Preferably, the other end of the stud extends into the inner wall of the outer tube and is fixedly connected to a frustum-shaped column. A locking groove is opened along the axial direction on the outer wall of the inner tube. An expansion damping strip is provided in the locking groove. One end of the frustum-shaped column is pressed against the expansion damping strip. Scale lines are opened at equal intervals on the outer wall of the inner tube.

[0006] Preferably, the bottom surface of the installation platform has a T-shaped groove, the top surface of the camera has a T-shaped slider that slides within the T-shaped groove, one end of the T-shaped slider has symmetrical slots on both sides, the inner wall of the T-shaped groove has two spring blocks corresponding to the slots symmetrically arranged on both sides, the top surface of the installation platform has an unlocking push block that slides, and the bottom surface of the unlocking push block has a connecting plate that is fixedly connected to one end of the top surface of the spring block.

[0007] Preferably, the inner wall of the ball socket has an arc-shaped guide groove, the lower end of the ball head is provided with a half gear that slides in the arc-shaped guide groove, the mounting platform is mounted with a motor at the lower end of the middle of the arc-shaped guide groove, and the output shaft of the motor is coaxially fixed with a drive gear that meshes with the half gear.

[0008] Preferably, a horizontal bubble meter is provided on one side of the C-shaped clamp.

[0009] Preferably, the inner wall of the C-shaped clip is provided with a rubber anti-slip pad, the contact surface of the rubber anti-slip pad is provided with diamond-shaped anti-slip patterns, and the middle part of the rubber anti-slip pad is provided with a rectangular through groove adapted to the steel strip.

[0010] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model, through the clamping action of the C-clamp and anchor rod, and the tightening action of the top bolt, facilitates quick and easy device fixing without drilling or binding wire, improving installation convenience and achieving stable fixing without damaging the roof support structure. Simultaneously, the rubber anti-slip pad on the inner wall of the C-clamp and the abutment action of the anchor rod enhance friction, preventing loosening due to vibration or dust, improving fixing stability for long-term reliable fixing, ultimately solving the problems of labor-intensive installation, damage to the support structure, and unstable fixing in traditional methods, thus improving installation efficiency and equipment safety. The sliding cooperation between the inner and outer tubes and the locking cooperation between the studs, frustum columns, and expansion damping strips facilitates quick adjustment and fixing of the device height without disassembly and reinstallation. Furthermore, the detachable clamping action between the C-clamp and anchor rod facilitates quick disassembly and installation in new locations, improving mobility and enabling rapid relocation synchronously with the working face, ultimately solving the problems of traditional relocation requiring disassembly and reinstallation, and interruption of monitoring, thus improving relocation efficiency. The system improves monitoring continuity and efficiency. The rotational engagement of the ball joint and socket facilitates adjustment of the camera's pitch angle. Simultaneously, the meshing of the half-gear and drive gear, along with motor drive, allows for precise adjustment of the camera's pitch angle, enhancing angle adjustment accuracy and enabling omnidirectional adjustment of the monitoring perspective. This ultimately solves the problems of traditional supports being unable to adjust left or right angles and having easily obstructed or deviated viewing angles, thus improving monitoring coverage. The C-clamp and anchor bolt clamps, along with the rectangular through-slot in the center of the rubber anti-slip pad and the steel strip, facilitate fixing using existing anchor bolts and steel strips on the roadway top without requiring additional auxiliary structures. This improves structural adaptability to conditions with uneven distribution and varying specifications of support structures. Furthermore, the sliding engagement of the inner and outer pipes with the scale lines on the outer wall of the inner pipe allows for precise height adjustment, adapting to different roadway heights and improving height adaptability. This ultimately solves the problems of traditional supports having a single fixing method and being difficult to adapt to diverse support environments, reducing installation costs and operational complexity, and meeting policy requirements and underground working conditions. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a first-view schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a schematic diagram of the overall cross-sectional structure of the inner tube proposed in this utility model; Figure 3 This is a schematic cross-sectional view of the overall structure of the ball head proposed in this utility model; Figure 4 This is a partial cross-sectional view of the ball-and-socket structure proposed in this utility model; Figure 5This is a schematic cross-sectional view of the installation platform proposed in this utility model.

[0012] The numbers in the diagram are: 1. Anchor bolt; 2. C-clamp; 3. Tightening bolt; 4. Inner tube; 5. Outer tube; 6. Expansion damping strip; 7. Damping bearing; 8. Ball head; 9. Ball socket; 10. Camera; 11. Spring clip; 12. Half gear; 13. Rubber anti-slip pad. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Example: See Figures 1 to 5This utility model discloses a portable camera hoisting device for underground coal mines, comprising an anchor rod 1, a C-shaped clamp 2 clamped on the anchor rod 1, connecting plates fixed to both sides of the opening of the C-shaped clamp 2, a tightening bolt 3 passing through the connecting plates, a screw rod screwed to the bottom of the C-shaped clamp 2, an inner tube 4 screwed to the bottom end of the screw rod, an outer tube 5 slidably sleeved at the lower end of the inner tube 4, an internally threaded tube on one side of the outer tube 5, a stud screwed into the internally threaded tube, a handwheel fixed to one end of the stud, a damping bearing 7 rotatably mounted at the bottom end of the outer tube 5, a ball head 8 coaxially fixed to the bottom end of the damping bearing 7, a ball socket 9 wrapped around the lower end of the ball head 8, an installation platform fixed to the bottom end of the ball socket 9, and a camera 10 snapped onto the bottom surface of the installation platform; the anchor rod 1 is made of 20MnSi alloy steel, which has high strength and high toughness, providing a high-strength and high-toughness for the device. Provides a stable mounting platform; C-clamp 2 is made of Q235 steel plate, which is easy to process and has sufficient strength. It is quickly clamped to anchor rod 1 by tightening bolt 3. Tightening bolt 3 is made of 304 stainless steel, which is rust-resistant and does not require drilling or binding wire, simplifying the installation process; Inner tube 4 and outer tube 5 are made of seamless steel pipe, with uniform wall thickness and high strength, and are used with screws to achieve height adjustment; Damping bearing 7 is a deep groove ball damping bearing of model 6205-2RS, which ensures stable horizontal rotation and avoids vibration and displacement; Ball head 8 and ball socket 9 are made of 45 steel, which has high hardness and good wear resistance, providing a basis for angle adjustment; The mounting platform is made of aluminum alloy, which is lightweight and high-strength, making it easy to install camera 10; This structure realizes the basic structure of the device from fixation to camera 10 installation. The basic functional layout provides the foundation for height and angle adjustment. The anchor bolt 1, C-clamp 2, inner tube 4, outer tube 5, damping bearing 7, ball head 8, ball socket 9, and installation platform together form the basic framework of the device, providing stable support for subsequent functional optimization. The other end of the stud extends into the inner wall of the outer tube 5 and is fixed to a frustum-shaped column. A locking groove is axially formed on the outer wall of the inner tube 4, and an expansion damping strip 6 is installed within the locking groove. One end of the frustum-shaped column presses against the expansion damping strip 6. Scale lines are equidistantly formed on the outer wall of the inner tube 4. The expansion damping strip 6 is made of nitrile rubber, which has good elasticity and oil resistance. After expanding with the pressure of the frustum-shaped column, it can tightly fit the inner tube 4 and outer tube 5. Both the inner tube 4 and outer tube 5 are made of seamless steel pipe, achieving stable locking after adjustment and preventing height... Offset; the scale lines on the outer wall of the inner tube 4 facilitate precise control of the height adjustment amount, ensuring adaptation to different roadway heights; this structure solves the locking problem after the inner tube 4 and outer tube 5 are adjusted, improving the accuracy of height adjustment; through the above, the cooperation of the cone column, expansion damping strip 6 with the inner tube 4 and outer tube 5 improves the height adjustment subsystem in the basic frame of the device, making the height adjustment precise, controllable and stable; the bottom surface of the installation platform has a T-shaped sliding groove, the top surface of the camera 10 is provided with a T-shaped slider that slides in the T-shaped sliding groove, one end of the T-shaped slider has symmetrical slots on both sides, the inner wall of the T-shaped sliding groove is symmetrically provided with two corresponding spring blocks 11 on both sides, the top surface of the installation platform is provided with an unlocking push block, the bottom surface of the unlocking push block is provided with a connecting plate that is fixedly connected to one end of the top surface of the spring block 11;The spring-loaded locking block 11 is made of 65Mn spring steel, offering excellent elastic recovery. It works in conjunction with the T-shaped slider slot to automatically lock and secure the camera 10, preventing accidental dislodgement. The unlocking push block retracts the spring-loaded locking block 11 for quick unlocking, eliminating the need for additional tools and significantly improving the efficiency of camera 10 installation and removal, facilitating downhole maintenance and replacement. This structure optimizes the camera 10 installation process, ensuring installation stability and ease of maintenance. Through the above, the cooperation of the T-shaped slider, T-shaped groove, spring-loaded locking block 11, and unlocking push block optimizes the camera 10 installation module within the device's basic frame, enhancing the device's practicality.

[0015] In this invention, the inner wall of the ball socket 9 has an arc-shaped guide groove, and the lower end of the ball head 8 is provided with a half gear 12 that slides within the arc-shaped guide groove. A motor is mounted on the lower end of the mounting platform located in the middle of the arc-shaped guide groove. The output shaft of the motor is coaxially fixed to a drive gear that meshes with the half gear 12. The motor is a DC brushless motor of model XCBLDC3864, suitable for downhole environments and providing stable power. The half gear 12 and the drive gear are made of 20CrMnTi material, carburized and quenched, resulting in a hard surface and a tough core, ensuring smooth meshing and transmission, and driving the ball head 8 and ball socket 9 to rotate along the arc-shaped guide groove. The ball head 8 and ball socket 9 are both made of 45# steel, enabling precise pitch angle adjustment to adapt to both overhead and downward mining conditions and expand the monitoring coverage. This structure solves the problem of limited angle adjustment in traditional devices, achieving automated and precise adjustment. Through the above, the motor, drive gear, half gear 12, and ball head 8 and ball socket 9 work together to improve the angle adjustment subsystem in the basic frame of the device, enhancing monitoring adaptability. A level bubble meter is installed on one side of the C-clamp 2; the level bubble meter can visually display the horizontal status of the C-clamp 2. The C-clamp 2 is made of Q235 steel plate, assisting installation personnel in quickly... The rapid calibration device ensures a level viewing angle, preventing camera 10 from shifting due to installation tilt and ensuring a level monitoring image. This also simplifies the calibration process and reduces installation difficulty. This structure provides a direct reference for precise device installation. Through the above, the combination of the level bubble meter and C-clamp 2 optimizes the installation and calibration module within the device's basic frame, guaranteeing monitoring effectiveness. The inner wall of the C-clamp 2 is equipped with a rubber anti-slip pad 13. The contact surface of the rubber anti-slip pad 13 has diamond-shaped anti-slip textures, and the center of the rubber anti-slip pad 13 has a rectangular through-slot adapted to the steel strip. The rubber anti-slip pad 13 is made of neoprene rubber. The material is highly slip-resistant and aging-resistant. The diamond-shaped anti-slip texture enhances the friction with the anchor rod 1, which is made of 20MnSi alloy steel, preventing the device from loosening due to vibration. The rectangular through groove is adapted to the steel strip, allowing the device to be fixed to the anchor rod 1 and clamp the steel strip, improving its adaptability to different support structures in the well. No additional auxiliary structures are needed, reducing installation costs and complexity. This structure enhances the stability of the fixation and environmental adaptability. Through the above, the cooperation between the rubber anti-slip pad 13 and the C-type clamp 2 improves the fixing and adaptation module in the basic frame of the device, making the device more suitable for actual working conditions in the well.

[0016] Working Principle: When using this utility model, the first step is fixed installation. The device is adaptable to two support structures on the tunnel roof: anchor bolts 1 and steel strips. If fixed to anchor bolts 1, align the opening of the C-clamp 2 with the anchor bolt 1 and clamp it. Tighten the tightening bolts 3 on the connecting plates on both sides of the opening of the C-clamp 2, ensuring the rubber anti-slip pad 13 on the inner wall of the C-clamp 2 tightly abuts against the anchor bolt 1. The prismatic anti-slip texture of the rubber anti-slip pad 13 enhances friction, achieving a firm fixation. If fixed to a steel strip, use the rectangular through-groove in the middle of the rubber anti-slip pad 13 on the inner wall of the C-clamp 2 to directly clamp the steel strip. Then, tighten with the tightening bolts 3, ensuring the rectangular through-groove fits tightly against the steel strip, achieving stable clamping of the steel strip. Neither fixing method requires drilling or binding wire, achieving flexible adaptation to different existing support structures. The foundation is fixed; then the height is adjusted. According to the tunnel height and monitoring requirements, the inner tube 4 is pushed to slide inside the outer tube 5 to adjust the overall length. The scale lines on the outer wall of the inner tube 4 can help to accurately control the height adjustment. After the adjustment is in place, the handwheel on the inner threaded tube of the outer wall of the outer tube 5 is turned, which drives the stud and the truncated cone at one end of the stud to move towards the inner tube 4. The truncated cone presses against the expansion damping strip 6 in the locking groove of the outer wall of the inner tube 4. After the expansion damping strip 6 is compressed and expands, it fits tightly against the inner wall of the outer tube 5 and the locking groove, realizing the locking and fixing of the inner tube 4 and the outer tube 5, and completing the height adjustment. Then the angle is adjusted. The damping bearing 7 at the bottom of the outer tube 5 can rotate horizontally, which drives the ball head 8, ball socket 9 and the installation platform below to rotate horizontally synchronously, initially adjusting the horizontal monitoring direction of the camera 10. Position; if pitch angle adjustment is required, it needs to be achieved through the cooperation of the motor, drive gear, and half gear 12: start the motor on the installation platform, the motor output shaft drives the drive gear to rotate, the drive gear meshes with the half gear 12 at the lower end of the ball head 8, the half gear 12 slides along the arc-shaped guide groove on the inner wall of the ball socket 9. Because the cross-section of the arc-shaped guide groove is arc-shaped, when the half gear 12 slides, it drives the ball head 8 to rotate relative to the ball socket 9 along the arc-shaped guide groove, thereby driving the installation platform and camera 10 to complete the pitch angle adjustment to adapt to changes in roadway height or upward and downward mining conditions; during the adjustment process, the damping bearing 7 can help maintain the horizontal angle stability and avoid horizontal azimuth deviation caused by underground vibration, ultimately achieving all-round coverage of the monitoring perspective; finally, the camera 10 is assembled. Align the T-shaped slider on the top surface of the camera 10 with the T-shaped groove on the bottom surface of the mounting platform and push it in. When the slot of the T-shaped slider contacts the spring block 11 on the inner wall of the T-shaped groove, the spring block 11 is pressed out and snaps into the slot, achieving quick snap-fit ​​and fixation of the camera 10. If it is necessary to disassemble or adjust the camera 10, push the unlocking push block on the top surface of the mounting platform. The unlocking push block drives the spring block 11 to retract through the bottom connecting plate, causing the spring block 11 to disengage from the slot, and the camera 10 can be slid out along the T-shaped groove. The whole process does not require additional tools, which is convenient for quick disassembly and maintenance. At the same time, the level bubble meter on one side of the C-clamp 2 can help calibrate the level of the device during installation, ensuring that the monitoring angle of the camera 10 does not shift and ensuring stable monitoring effect. At this point, the device is in use.

[0017] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A portable camera suspension device for underground coal mines, comprising an anchor bolt (1), characterized in that: The anchor rod (1) is clamped with a C-shaped clamp (2). A connecting plate is fixed to both sides of the opening of the C-shaped clamp (2). A tightening bolt (3) is passed through the connecting plate. A screw is screwed to the bottom of the C-shaped clamp (2). An inner tube (4) is screwed to the bottom end of the screw. An outer tube (5) is slidably sleeved at the lower end of the inner tube (4). An internal threaded tube is provided on one side of the outer wall of the outer tube (5). A stud is screwed into the internal threaded tube. A handwheel is fixed to one end of the stud. A damping bearing (7) is rotatably provided at the bottom end of the outer tube (5). A ball head (8) is coaxially fixed to the bottom end of the damping bearing (7). A ball socket (9) is wrapped around the lower end of the ball head (8). An installation platform is fixed to the bottom end of the ball socket (9). A camera (10) is snapped onto the bottom surface of the installation platform.

2. The portable camera hanging device for underground coal mines according to claim 1, characterized in that: The other end of the stud extends into the inner wall of the outer tube (5) and is fixed with a frustum column. A locking groove is opened along the axial direction on the outer wall of the inner tube (4). An expansion damping strip (6) is provided in the locking groove. One end of the frustum column is pressed against the expansion damping strip (6). Scale lines are opened at equal intervals on the outer wall of the inner tube (4).

3. The portable camera hanging device for underground coal mines according to claim 2, characterized in that: The bottom surface of the installation platform has a T-shaped groove, and the top surface of the camera (10) is provided with a T-shaped slider that is slidably disposed in the T-shaped groove. The T-shaped slider has symmetrical slots on both sides of one end. The inner wall of the T-shaped groove is provided with two spring blocks (11) corresponding to the slots on both sides. The top surface of the installation platform is provided with an unlocking push block, and the bottom surface of the unlocking push block is provided with a connecting plate that is fixedly connected to one end of the top surface of the spring block (11).

4. The portable camera hanging device for underground coal mines according to claim 3, characterized in that: The inner wall of the ball socket (9) is provided with an arc-shaped guide groove. The lower end of the ball head (8) is provided with a half gear (12) that slides in the arc-shaped guide groove. The mounting platform is located at the lower end of the middle part of the arc-shaped guide groove and a motor is installed thereon. The output shaft of the motor is coaxially fixed with a drive gear that meshes with the half gear (12).

5. A portable camera hanging device for underground coal mines according to claim 4, characterized in that: A horizontal bubble meter is provided on one side of the C-shaped clamp (2).

6. A portable camera suspension device for underground coal mines according to claim 5, characterized in that: The inner wall of the C-type clip (2) is provided with a rubber anti-slip pad (13). The contact surface of the rubber anti-slip pad (13) is provided with a diamond-shaped anti-slip pattern. The middle part of the rubber anti-slip pad (13) is provided with a rectangular through groove adapted to the steel strip.

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