Belt flying prevention and automatic deviation correction device for coal mine

Abstract

The invention discloses a coal mine belt flying prevention and automatic deviation correction device which comprises a device framework component and second transmission rollers, movable framework components are symmetrically mounted on the middle section of the bottom of the device framework component left and right, and the second transmission rollers are symmetrically erected on the side edge of a first transmission roller left and right. Through cooperative work of a device framework component, a movable framework component, a first transmission roller and a second transmission roller, efficient deviation correction and belt flying prevention of coal mine belt conveying are achieved, first driving bases at the two ends of a first roller body are rigidly connected with a device framework component stabilizing base through first supporting corner brackets, and high-speed running stability of the first transmission roller is guaranteed; an electric push rod of the second transmission roller responds, a second damping hinge pushes a second supporting corner bracket to incline, and a first damping hinge provides reverse supporting force, so that a second roller body forms reverse curved surface track correction force, and meanwhile, the first transmission roller automatically adjusts the rotating speed of the roller bodies on the two sides through a differential transmission mechanism and cooperates with a reducing structure of the second transmission roller; and the offset is quickly compensated.

Description

Technical Field

[0001] This invention relates to the field of coal mine construction technology, specifically to a coal mine anti-flying belt and automatic correction device. Background Technology

[0002] An automatic web guiding device is an industrial automation equipment mainly used to detect and correct lateral deviations of materials such as rolled materials and belts during transportation. Its core principle is to monitor the material position in real time through sensors (such as photoelectric, ultrasonic, or laser sensors), transmit the signals to the controller for processing, and then drive the mechanical frame to adjust the material position, forming a closed-loop control system.

[0003] Conventional automatic belt alignment devices mostly use a single sensor and a fixed mechanical structure. In complex working conditions such as coal mines, the detection accuracy is easily reduced due to dust accumulation and vibration interference, and they cannot actively adapt to the dynamic deformation of the belt. Summary of the Invention

[0004] The purpose of this invention is to provide a coal mine anti-flying belt and automatic correction device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a coal mine anti-flying belt and automatic correction device, comprising a device frame and a second transmission roller. A movable frame is symmetrically installed on the left and right sides of the bottom middle section of the device frame, and a first transmission roller is horizontally mounted on the top middle of the device frame. The second transmission roller is symmetrically mounted on the sides of the first transmission roller. The second transmission roller includes a second roller body, a second drive seat, a second support bracket, a first damping hinge, a second damping hinge, and an electric push rod. A second drive seat is installed at both the left and right ends of the second roller body, and a second support bracket is installed on the side of the second drive seat away from the second roller body. A first damping hinge is installed on one set of the bottom of the second support bracket near the first transmission roller, and a second damping hinge is installed on one set of the bottom of the second support bracket away from the first transmission roller. An electric push rod is vertically installed at the bottom of the second damping hinge.

[0006] Preferably, the device frame includes a support frame, a stabilizing seat, a docking seat, and a fixed corner bracket. The top middle section of the support frame is symmetrically provided with stabilizing seats, and the bottom middle section of the support frame is symmetrically provided with docking seats. Fixed corner brackets are installed on both the left and right sides of the support frame.

[0007] Preferably, the support frame, the stabilizer, and the docking seat are integrated into one structure, and the four diagonal corners of the bottom of the first damping hinge and the electric push rod are provided with holes for bolt fixing at the top left and right ends of the support frame. The bottom surface of the fixed corner frame is provided with holes for bolt fixing.

[0008] Preferably, the movable structural component includes a buffer seat, a guide rail body, a support platform, and a positioning bolt. The guide rail body is horizontally mounted on the top of the buffer seat, and the support platform is mounted on the top of the guide rail body. A positioning bolt is horizontally threaded onto the lower side of the support platform.

[0009] Preferably, the guide rail body and the support platform are connected to each other by a slotted embedded structure, and the top of the support platform and the docking seat are provided with holes at the four opposite corners for bolt fixing.

[0010] Preferably, the first transmission roller includes a first roller body, a first drive seat, and a first support bracket. The first drive seat is installed at both the left and right ends of the first roller body, and the first support bracket is installed on the side of the first drive seat away from the first roller body.

[0011] Preferably, the bottom of the first support bracket and the top of the stabilizer are provided with holes for bolt fixing at the four opposite corners, and the second transmission roller is obliquely mounted on both ends of the first transmission roller.

[0012] Preferably, the top of both the first damping hinge and the second damping hinge are provided with holes for bolt fixing at the four opposite corners of the bottom of the two sets of second support brackets, and the top of the electric push rod is fixedly connected to the second damping hinge.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This coal mine anti-slip belt and automatic correction device features a second drive roller. An electric push rod and damping hinge on the second drive roller work in tandem to dynamically adjust the roller angle based on real-time belt misalignment data, generating a multi-dimensional correction torque. Its innovation lies in upgrading traditional single-point correction to spatial curved surface trajectory correction. The second roller employs a variable diameter design, working in conjunction with the differential transmission mechanism of the first drive roller to complete misalignment compensation within 0.5 seconds. This structural design enables the device to provide real-time dynamic correction during coal mine belt conveyor transport, effectively preventing slippage accidents caused by belt deviation. Specifically, when a sensor inside the second support bracket detects lateral belt misalignment, the electric push rod immediately activates. The second damping hinge pushes the second support bracket to generate an tilt angle, while the first damping hinge provides a reverse support force, causing the second roller to form a curved trajectory correction force opposite to the offset direction. At this time, the first drive roller adjusts the speed of the two rollers through the differential transmission mechanism, forming a synergistic effect with the variable diameter structure of the second drive roller, completing the offset compensation within 0.5 seconds. This device achieves a technological breakthrough from single-point correction to spatial curved surface correction through the deep integration of mechanical structure and electrical control, significantly improving the safety and stability of coal mine belt conveyor systems. Its simple structure reduces maintenance costs by more than 40% compared to traditional devices, while the correction response speed is increased by 3 times. It can be widely used in various coal mine belt conveyor scenarios. This coal mine anti-slip belt and automatic correction device consists of a main frame and a moving frame. The main frame serves as the overall support structure, with its stable seat and the first support bracket of the first drive roller rigidly connected by bolts to ensure the stability of the main drive system. The moving frame achieves precise displacement control through the embedded structure of the guide rail body and the support platform, in conjunction with positioning bolts. Its buffer seat effectively absorbs the vibration energy generated by the belt running. The first and second drive rollers are linked by a differential transmission mechanism. When the second roller changes angle under the drive of the electric push rod, the first roller automatically compensates for belt tension fluctuations through the speed difference. This mechanical linkage design allows the device to achieve adaptive adjustment without the need for an additional tension sensor. The device as a whole adopts a modular design with other structures, and the components are connected by standardized perforated structures for quick assembly and disassembly. Especially in the harsh environment of underground coal mines, maintenance personnel can complete the replacement and maintenance of core components in a short time. In addition, the mobile frame can provide good structural support for the device frame at the bottom. At the same time, the structural characteristics of the mobile frame can be used to realize the expansion and combination of the structure. This allows for the accurate linear arrangement of several sets of device frame components and the first and second transmission rollers at the top, and the rapid adjustment of the spacing. The fixed angle brackets are then used to fix the installation structure surface with bolts. This expansion and combination method not only enhances the stability of the overall structure, but also allows for flexible adjustment of the number and spacing of the devices according to actual needs. When the coal mine belt conveyor system needs to extend the transmission distance, it is only necessary to add device units and adjust the positioning bolts of the mobile frame to achieve seamless expansion of the transmission line without structural modification of the entire system. Attached Figure Description

[0014] Figure 1 This is a side view of the support body structure of the device of the present invention; Figure 2 This is a schematic diagram of the device architecture of the present invention; Figure 3 This is a three-dimensional structural diagram of the mobile frame component of the device of the present invention; Figure 4 This is a three-dimensional structural diagram of the first transmission roller of the device of the present invention; Figure 5 This is a three-dimensional structural diagram of the second transmission roller of the device of the present invention.

[0015] In the diagram: 1. Device frame component; 101. Support frame; 102. Stabilizer; 103. Connecting seat; 104. Fixed corner frame; 2. Movable frame component; 201. Buffer seat; 202. Guide rail body; 203. Support platform; 204. Positioning bolt; 3. First transmission roller; 301. First roller body; 302. First drive seat; 303. First support corner frame; 4. Second transmission roller; 401. Second roller body; 402. Second drive seat; 403. Second support corner frame; 404. First damping hinge; 405. Second damping hinge; 406. Electric push rod. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figure 1-4This invention provides a technical solution: a coal mine anti-flying conveyor belt and automatic correction device, comprising a device frame 1 and a second transmission roller 4. A movable frame 2 is symmetrically installed on the left and right sides of the bottom middle section of the device frame 1, and a first transmission roller 3 is horizontally mounted on the top middle of the device frame 1. The second transmission roller 4 is symmetrically mounted on the sides of the first transmission roller 3. The second transmission roller 4 includes a second roller body 401, a second drive seat 402, a second support bracket 403, a first damping hinge 404, a second damping hinge 405, and... The electric push rod 406 is mounted on both the left and right ends of the second roller body 401, and a second drive seat 402 is mounted on the side of the second drive seat 402 away from the second roller body 401. A first damping hinge 404 is mounted on one set of the bottom of the second support bracket 403 near the first transmission roller 3, and a second damping hinge 405 is mounted on one set of the bottom of the second support bracket 403 away from the first transmission roller 3. The electric push rod 406 is vertically mounted on the bottom of the second damping hinge 405. The tops of hinge 404 and the second damping hinge 405 are provided with holes for bolt fixing at the four opposite corners of the bottom of the two sets of second support brackets 403. The top of the electric push rod 406 is fixedly connected to the second damping hinge 405. The first transmission roller 3 includes a first roller body 301, a first drive seat 302 and a first support bracket 303. The first drive seat 302 is installed at both the left and right ends of the first roller body 301, and a first support bracket is installed on the side of the first drive seat 302 away from the first roller body 301. The corner bracket 303 and the bottom of the first support corner bracket 303 and the top of the stabilizer 102 are provided with holes for bolt fixing. The second drive roller 4 is obliquely mounted on both ends of the first drive roller 3. The oblique arrangement of the first roller body 301 and the second roller body 401 forms a specific angle. The angle range is precisely calculated and set to 15°-30°. This angle design allows the belt to generate a suitable lateral force during operation, which, together with the dynamic correction mechanism of the second drive roller 4, forms a compound correction effect.The first drive seat 302 integrates a differential gear set with a gear ratio of 1:1.2. When the second roller 401 deflects at an angle, the differential mechanism is triggered by the change in belt tension, creating a speed difference of 0.5-2 r / min between the two ends of the first roller 301. This mechanical tension compensation mechanism can achieve adaptive adjustment without additional electrical control. The first support bracket 303 is made of high-strength alloy steel casting, and its surface is hardened to form a 5mm thick hardened layer. When subjected to a 200kN impact load, it only produces 0.02mm of elastic deformation, ensuring the structural stability of the main drive system. The connection between the stabilizer 102 and the support bracket 101 is equipped with a rubber shock-absorbing pad. This shock-absorbing pad is made of EPDM rubber with a Shore hardness of 65±5°, which can effectively isolate frequencies in the range of 5-50Hz. The vibration energy of z reduces the overall vibration acceleration level of the device to below 80dB. The guide rail body 202 of the moving frame component 2 adopts a ball linear guide rail structure design with a friction coefficient of only 0.003-0.005. Combined with the finely machined surface roughness Ra≤0.8μm of the support platform 203, a positioning accuracy of 0.1mm is achieved. The positioning bolt 204 adopts a trapezoidal thread design with a pitch of 4mm. When rotated 3 times, a precise displacement adjustment of 12mm can be achieved. This mechanical positioning structure can still maintain reliable working performance in the dusty environment of coal mines. The buffer seat 201 is filled with silicone shock-absorbing material with a Shore hardness of 40±3°. When subjected to vertical impact force, it can absorb more than 60% of the impact energy through the viscoelastic deformation of the molecular chain, effectively protecting the upper transmission components from accidental load damage.

[0018] Meanwhile, the device frame 1 includes a support frame 101, a stable seat 102, a docking seat 103, and a fixing bracket 104. The stable seat 102 is symmetrically arranged on the left and right sides of the top middle section of the support frame 101, and the docking seat 103 is symmetrically arranged on the left and right sides of the bottom middle section of the support frame 101. Fixing brackets 104 are installed on both the left and right sides of the support frame 101. The support frame 101, stable seat 102, and docking seat 103 are integrated into a single structure. Holes for bolt fixing are provided at the four diagonal points of the bottom of the first damping hinge 404 and the four diagonal points of the electric push rod 406 where they connect to the top left and right sides of the support frame 101. The bottom surface of the frame 104 has holes for bolt fixing. The movable frame component 2 includes a buffer seat 201, a guide rail body 202, a support platform 203, and a positioning bolt 204. The guide rail body 202 is horizontally mounted on the top of the buffer seat 201, and the support platform 203 is mounted on the top of the guide rail body 202. The positioning bolt 204 is horizontally threaded onto the lower side of the support platform 203. The guide rail body 202 and the support platform 203 are connected to each other using a slotted embedded structure. Holes for bolt fixing are provided at the four opposite corners of the connection between the top of the support platform 203 and the mating seat 103. The track surface of the rail body 202 undergoes high-frequency quenching to form a 2mm thick hardened layer with a hardness of HRC50-55. Even under heavy loads, it maintains a straightness accuracy of 0.01mm / m, ensuring smooth sliding of the support platform 203. The support platform 203 is made of high-strength aluminum alloy casting with an internal reinforcing rib structure, reducing weight by 30% while ensuring structural strength, facilitating on-site installation and debugging. The threaded parts of the positioning bolt 204 are galvanized, with a surface roughness Ra≤1.6μm. Combined with the scale on the side wall of the guide rail body 202, precise positioning of ±0.5mm can be achieved. (Buffer seat...) Adjustable shims are provided at the connection between 201 and support frame 101. The thickness of the shims ranges from 0.5 to 5 mm. By increasing or decreasing the number of shims, the overall height of the device can be finely adjusted to adapt to the needs of different installation sites. The fixed corner bracket 104 adopts an L-shaped structure design, and its verticality error is controlled within 0.1°. When fixed to the installation base surface, the installation accuracy of the device frame component 1 can be ensured to reach IT7 level by calibrating with a level. The connection surface between the docking seat 103 and the support platform 203 is precision machined, and its flatness error does not exceed 0.05 mm. With the guiding effect of the positioning pin, fast and accurate docking installation can be achieved.

[0019] When using it, firstly, based on the actual layout of the coal mine belt conveyor system, determine the installation location and quantity of the device. Fix the device frame 1 to the installation foundation surface using the fixed angle bracket 104. Use a level to calibrate the verticality of the device frame 1 to ensure that its installation accuracy reaches IT7 level. Next, the guide rail body 202 of the mobile frame component 2 is docked with the docking seat 103 on the device frame component 1. The positioning bolt 204 is used to achieve precise positioning and fixation. At the same time, according to actual needs, the overall height of the device is finely adjusted by increasing or decreasing the number of adjusting shims at the connection between the buffer seat 201 and the support frame 101. Subsequently, the first transmission roller 3 is installed on the stabilizing seat 102 on the top of the device frame 1, ensuring that the first support bracket 303 and the stabilizing seat 102 are firmly fixed with bolts, and the differential gear set inside the first drive seat 302 is in normal working condition. Then, the second transmission roller 4 is obliquely mounted on both ends of the first transmission roller 3, and the included angle between the second roller body 401 and the first roller body 301 is adjusted to be within the range of 15°-30°, so that the first damping hinge 404 and the second damping hinge 405 at the bottom of the second support bracket 403 are fixed with the corresponding positions on the top of the device frame 1 with bolts, and the electric push rod 406 is vertically installed at the bottom of the second damping hinge 405. After installation, the coal mine belt conveyor system is started. During operation, when the sensor inside the second support bracket 403 detects lateral belt deviation, the electric push rod 406 is immediately activated, pushing the second support bracket 403 to tilt through the second damping hinge 405. At the same time, the first damping hinge 404 provides a reverse support force, causing the second roller 401 to form a curved trajectory correction force opposite to the deviation direction. At this time, the differential gear set inside the first drive seat 302 of the first drive roller 3 triggers the differential mechanism according to the belt tension change, so that the two ends of the first roller 301 form a speed difference of 0.5-2 r / min, which forms a synergistic effect with the variable diameter structure of the second drive roller 4, completing the deviation compensation within 0.5 seconds. During routine maintenance, due to the modular design of the device, the components can be quickly disassembled and assembled through standardized hole structures. Maintenance personnel can complete the replacement and maintenance of core components in a short time. When the coal mine belt conveyor system needs to extend the transmission distance, it is only necessary to add device units, adjust the spacing by using the positioning bolts 204 of the movable frame component 2, and use the fixed angle bracket 104 to fix the installation structure surface with bolts to achieve seamless expansion of the transmission line without the need for structural modification of the entire system.

[0020] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal mine anti-flying belt and automatic correction device, comprising a device frame (1) and a second transmission roller (4), characterized in that, The bottom middle section of the device frame (1) is symmetrically equipped with a movable frame (2), and the top middle of the device frame (1) is horizontally supported by a first transmission roller (3). The second transmission roller (4) is symmetrically supported on the sides of the first transmission roller (3). The second transmission roller (4) includes a second roller body (401), a second drive seat (402), a second support bracket (403), a first damping hinge (404), a second damping hinge (405), and an electric push rod (406). The second drive seat (402) is installed at both ends of the first drive roller (3), and a second support bracket (403) is installed on the side of the second drive seat (402) away from the second roller body (401). A first damping hinge (404) is installed on a set of bottoms of the second support bracket (403) near the first drive roller (3), and a second damping hinge (405) is installed on a set of bottoms of the second support bracket (403) away from the first drive roller (3). At the same time, an electric push rod (406) is vertically installed on the bottom of the second damping hinge (405).

2. The anti-flying conveyor belt and automatic correction device for coal mines according to claim 1, characterized in that, The device structure (1) includes a support frame (101), a stabilizing seat (102), a docking seat (103), and a fixed corner bracket (104). The stabilizing seat (102) is symmetrically arranged on the left and right sides of the top middle section of the support frame (101), and the docking seat (103) is symmetrically arranged on the left and right sides of the bottom middle section of the support frame (101). The fixed corner bracket (104) is installed on both the left and right sides of the support frame (101).

3. The anti-flying belt and automatic correction device for coal mines according to claim 2, characterized in that, The support frame (101), the stabilizing seat (102), and the docking seat (103) are integrated into one structure. The four diagonal corners of the bottom of the first damping hinge (404) and the electric push rod (406) are connected to the top left and right ends of the support frame (101) with holes for bolt fixing. The bottom surface of the fixed corner bracket (104) is provided with holes for bolt fixing.

4. The anti-flying conveyor belt and automatic correction device for coal mines according to claim 2, characterized in that, The movable structural component (2) includes a buffer seat (201), a guide rail body (202), a support platform (203), and a positioning bolt (204). The guide rail body (202) is horizontally mounted on the top of the buffer seat (201), and the support platform (203) is mounted on the top of the guide rail body (202). The positioning bolt (204) is horizontally threaded on the lower side of the support platform (203).

5. A coal mine anti-flying belt and automatic correction device according to claim 4, characterized in that, The guide rail body (202) and the support platform (203) are connected to each other by a slotted embedded structure, and the top of the support platform (203) and the docking seat (103) are provided with holes at the four opposite corners for bolt fixing.

6. A coal mine anti-flying belt and automatic correction device according to claim 2, characterized in that, The first transmission roller (3) includes a first roller body (301), a first drive seat (302) and a first support bracket (303). The first drive seat (302) is installed at both the left and right ends of the first roller body (301), and the first support bracket (303) is installed on the side of the first drive seat (302) away from the first roller body (301).

7. A coal mine anti-flying belt and automatic correction device according to claim 6, characterized in that, The bottom of the first support bracket (303) and the top of the stabilizer (102) are provided with holes for bolt fixing at the four opposite corners. The second transmission roller (4) is obliquely mounted on both ends of the first transmission roller (3).

8. A coal mine anti-flying belt and automatic correction device according to claim 1, characterized in that, The top of the first damping hinge (404) and the second damping hinge (405) are provided with holes for bolt fixing at the four opposite corners of the bottom of the two sets of second support brackets (403), and the top of the electric push rod (406) is fixedly connected to the second damping hinge (405).

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