A 7-shaped active flexible deviation rectifying device and method for coking coal unloading conveyor belt

Abstract

The present application relates to the technical field of belt conveying equipment, and discloses a 7-shaped active flexible deviation rectifying device and method for coking coal unloading conveying belt, which comprises a support, a vertical plate is fixed outside the support, a top plate extending to the center of the belt is connected to the top of the vertical plate, and a half-wrapped frame structure of 7-shaped is formed. A vertical edge roller is rotatably connected outside the vertical plate, and a horizontal edge roller is rotatably connected to the bottom of the top plate, the two edge rollers are combined perpendicularly and kept in contact. When the belt deviates or the edge is upturned, the outer edge of the belt first contacts the vertical edge roller and drives it to rotate freely, and then the horizontal edge roller is synchronously rotated. The soft rolling friction force generated by the cooperative operation of the double rollers is used to apply downward pressing and inward reverse pushing and pulling forces to the deviated belt, so that the belt deviating from the track is actively and smoothly pushed and pulled back to the center position. The present application avoids the upward folding of the belt, reduces the physical wear of the edge of the belt, and prevents coal from being scattered along the line.

Description

Technical Field

[0001] This invention relates to the field of belt conveyor technology, specifically to a 7-shaped active flexible belt alignment device and method for coking coal unloading conveyor belts. Background Technology

[0002] In the coal unloading and conveying process of coking plants, belt conveyors are the basic equipment for realizing the long-distance continuous transportation of coal. Affected by factors such as material drop point deviation, uneven belt tension, and idler roller operation, belts are prone to slipping and deviating to one side during coal-carrying operation. To solve this problem, the passive limiting method of adding fixed baffles on both sides of the support or a single-sided rigid roller is usually used to forcibly prevent belt deviation.

[0003] Existing traditional belt alignment structures have significant limitations in actual operation. Fixed limiting devices generate continuous rigid sliding friction with the edge of the high-speed conveyor belt. This friction not only accelerates the wear of the rubber material at the belt edge but can also lead to belt tearing in severe cases, significantly shortening the belt's service life. Simultaneously, when the belt is compressed and generates significant lateral thrust, a single side roller cannot effectively suppress the upward folding and lifting tendency of the belt edge under stress. Once the belt edge lifts, the original load-bearing cross-sectional shape of the conveyor surface is disrupted, often resulting in large amounts of coal spillage from the side gaps, increasing material loss and manual cleanup burden on site. Furthermore, most complex belt alignment retrofit devices currently available require drilling, cutting, or partial disassembly and reinstallation of the existing conveyor support structure during on-site installation. This destructive construction work directly weakens the load-bearing strength of the original support foundation structure, and the retrofit construction period is long, easily disrupting the normal production progress of the coking coal unloading system. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a 7-shaped active flexible belt alignment device and method for coking coal unloading conveyor belts. This solves the problems of existing belt alignment devices causing severe wear on the belt edges due to rigid obstruction, which can easily lead to upward folding and coal spillage, and the potential damage to the original conveyor support structure during installation and modification.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a 7-shaped active flexible belt deviation correction device and method for a coking coal unloading conveyor belt, comprising a support frame, a horizontal bar fixedly connected to the outside of the support frame, a lower roller at the top of the horizontal bar, an inclined roller and a horizontal roller at the top of the support frame, a vertical plate installed on the outside of the support frame, a vertical side guard roller rotatably connected to the outside of the vertical plate, a top plate fixedly connected to the top of the vertical plate, and a horizontal side guard roller rotatably connected to the bottom of the top plate. The vertical side guard roller and the horizontal side guard roller are located at the position of highest belt deviation and are perpendicular to each other. When the belt deviates to one side, the outer edge of the belt first contacts the vertical side guard roller and drives the vertical side guard roller to rotate. The vertical side guard roller and the horizontal side guard roller maintain contact. The rotation of the vertical side guard roller drives the horizontal side guard roller to rotate synchronously. The vertical side guard roller and the horizontal side guard roller use the rolling friction generated by contact and compression to generate a reverse pushing and pulling force on the belt, pushing the belt that deviates from the running trajectory back to the center position, thus completing the physical deviation correction action.

[0006] Preferably, the upright plate is vertically fixed to the end of the bracket away from the center of the belt by welding. The upright plate adopts an in-situ fixing mode to preserve the original foundation bearing structure of the bracket and avoid damaging the bracket.

[0007] Preferably, the top plate extends horizontally a certain distance towards the center of the belt, and the top plate and the vertical plate together form a frame structure that partially wraps around the side edge of the belt, providing a stable mounting point for the transverse side guard roller.

[0008] Preferably, the vertical side guard rollers are arranged in a direction perpendicular to the ground, and the axis of the vertical side guard rollers is parallel to the side of the upright plate. The vertical side guard rollers are vertically blocked outside the side edge of the belt to prevent the belt from running off-track and crossing the boundary in the lateral direction.

[0009] Preferably, the transverse side guard roller is arranged in a direction parallel to the ground, and the axis of the transverse side guard roller is parallel to the bottom surface of the top plate. The transverse side guard roller blocks the belt from hanging outside the edge of the upper surface of the belt, and works with the vertical side guard roller to press the belt downward when it is tilted upward.

[0010] Preferably, the vertical side guard roller is equipped with a universal standard bearing. The universal standard bearing causes the vertical side guard roller to rotate freely when it comes into contact with the side of the belt, changing the original intense sliding friction of the belt side to a gentle force mode that includes rolling friction.

[0011] Preferably, the transverse side guard roller is internally equipped with a universal standard bearing. The universal standard bearing causes the transverse side guard roller to rotate freely when it comes into contact with the edge of the upper surface of the belt, thereby eliminating the problem of the belt flipping upward and reducing the physical wear of the belt edge.

[0012] Preferably, the inclined roller, the lower roller, and the horizontal roller are together supported on the bottom surface of the belt, and the inclined roller, the lower roller, and the horizontal roller constitute the basic conveying and bearing structure of the belt.

[0013] Preferably, the vertical side guard roller and the horizontal side guard roller perform an active physical correction action at the moment the belt shows a tendency to shift, continuously pushing and pulling the belt in the offset state back to the normal center running area.

[0014] Preferably, the method includes the following steps: during the investigation and positioning stage, the specific locations on the belt conveyor line that are prone to deviation and coal spillage are identified, and on the premise of confirming that the original structure is not damaged, the vertical plate and the top plate are fixedly installed in place on the side of the support that is prone to deviation. During the assembly and configuration stage, the vertical side guard roller is rotatably installed on the upright plate, and the horizontal side guard roller is rotatably installed on the top plate. The two are accurately assembled and positioned on the same side and above the edge of the belt. During the active correction phase, the belt operation is initiated. When the belt deviates to one side, the edge of the belt directly contacts the vertical and horizontal side rollers. The rolling friction generated by the contact and compression forms a continuous, flexible, reverse guiding force, which automatically and gently pushes the deviated belt back to the center normal operating position, thus completing the active correction process.

[0015] This invention provides a 7-shaped active flexible belt alignment device and method for coking coal unloading conveyor belts. It has the following beneficial effects: 1. This invention changes the traditional rigid deviation prevention method of conveyor belts by using a structural design in which the vertical and horizontal side guard rollers are perpendicular to each other and keep in contact. When the conveyor belt deviates, the belt edge drives the vertical side guard roller to rotate, which in turn drives the horizontal side guard roller to rotate synchronously. The sliding friction between the belt and the correction device is converted into rolling friction. The rolling friction force generates a smooth reverse pushing and pulling force on the belt, which gently pushes the deviated belt back to the center running position, reduces the physical wear of the belt edge, extends the service life of the belt, and reduces the leakage of materials along the line.

[0016] 2. The vertical plate and top plate of the present invention form a semi-enclosed frame structure. The vertical plate is directly fixed in place to the end of the existing conveyor support away from the center of the belt by welding. There is no need to carry out destructive construction operations such as drilling or cutting on the original support, thus completely preserving the physical strength of the original foundation support structure. At the same time, the frame structure is suspended above the edge of the belt, providing a stable installation point and force support for the transverse and vertical side guard rollers, ensuring that the correction device can remain stable and not loose when continuously subjected to the lateral thrust of the belt.

[0017] 3. This invention forms a two-way physical constraint on the belt edge by vertically arranged vertical side guard rollers and horizontally arranged transverse side guard rollers. The vertical side guard rollers block the belt side to prevent the belt from going lateral out of bounds, while the transverse side guard rollers are suspended above the upper surface edge of the belt to press down the belt that is tilting upwards. In the early stage when the belt tends to shift, the two rollers work together with the built-in standard bearing to rotate freely and actively intervene to correct the deviation. This simultaneously solves the problems of belt slippage and upward folding of the edge, ensuring the continuity and safety of the coal unloading and conveying system for long-distance material transport. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 To highlight the structural diagram of the bracket of the present invention; Figure 3 To highlight the structural diagram of the skew roller of the present invention; Figure 4 A schematic diagram of the vertical side guard roller of the present invention is shown to highlight the structure of the present invention.

[0019] Among them, 1. support frame; 2. upright plate; 3. top plate; 4. inclined roller; 5. lower roller; 6. horizontal roller; 7. crossbar; 8. vertical side guard roller; 9. transverse side guard roller. Detailed Implementation

[0020] The technical solutions in 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.

[0021] Please see the appendix Figure 1 -Appendix Figure 4This invention provides a 7-shaped active flexible deviation correction device and method for a coking coal unloading conveyor belt, including a support 1. When the coking coal unloading conveyor system is started and the belt is driven to perform stable material conveying operations on the base support surface formed by the inclined roller 4, the horizontal roller 6, and the lower roller 5 supported above the crossbar 7 set on the top layer of the support 1, once the belt slips laterally to the side of the highest frequency position due to uneven gravity distribution, the outer edge of the belt that deviates from the center trajectory will first make substantial contact and squeeze with the vertical side roller 8 that is rotatably connected to the external upright plate 2 of the support 1. The kinetic energy of the belt edge conveying forward is immediately converted and drives the vertical side roller 8 to rotate in place. Then, the horizontal side roller 9, which is in close contact with the vertical side roller 8, relies on the surface physical transmission... The dynamic effect is synchronously driven to rotate. At this time, the vertical side guard roller 8 and the horizontal side guard roller 9, which are suspended in the area above the belt side by the 7-shaped frame formed by the combination of the vertical plate 2 and the top plate 3 fixed on the top of the vertical plate 2, enter the double wheel linkage correction stage. During the coordinated rotation of the two side guard rollers, the rigid sliding friction damage force suffered by the belt edge is completely transformed into a soft and smooth rolling friction force. The vertical side guard roller 8 and the horizontal side guard roller 9 accurately use the rolling friction force generated by this contact compression to continuously apply a reverse push-pull guiding force to the inside of the belt, so as to implement a non-destructive and soft block on the belt that has deviated from the running trajectory and smoothly push and pull it back to the normal center position. The whole process is executed continuously and without interruption, thereby completing the fully automatic physical correction action and solving the problems of coal spillage and belt tearing along the line.

[0022] Please see the appendix Figure 1 and attached Figure 2 In a preferred embodiment of the present invention, during the on-site lightweight technology transformation construction and the daily coal-carrying operation of the belt conveyor system, the vertical plate 2, made of scrap steel, is firmly fixed to the outermost end of the support 1, which is far from the center area of ​​the belt conveyor, using a high-strength welding process along the direction perpendicular to the ground. The vertical plate 2 directly utilizes the existing space conditions on site to enter the working state in the in-situ fixed mode, eliminating the need for additional foundation excavation and overall disassembly and reassembly of the equipment. It preserves the original basic load-bearing skeleton structure of the support 1, which is responsible for supporting a large amount of coal material, and prevents any irreversible damage to the support 1 caused by drilling and cutting. At the same time, the vertical plate 2, with its solid in-situ welding state, becomes the core support foundation for the entire correction device to withstand stress. When the belt deviates, it continuously and stably resists the strong pushing force transmitted from the outer edge of the belt, ensuring that the correction mechanical components do not interfere with the existing coal unloading and conveying production line and operate safely and stably.

[0023] Please see the appendix Figure 1 -Appendix Figure 3In a preferred embodiment of the present invention, a top plate 3, extending horizontally along the top plane of the vertical plate 2 towards the center line of the conveyor belt, spans the area directly above the outer edge of the belt during the operation of the conveyor equipment with coal. The top plate 3 and the vertical plate 2, in their vertical state, work together to form a protective load-bearing frame structure that partially encloses the space above the side edge of the belt. The semi-enclosed frame structure formed by the top plate 3 and the vertical plate 2 acts as a stable physical defense line when the belt tends to slip outward or fold upward. At the same time, the flat bottom surface of the top plate 3 directly provides a stable and evenly stressed suspension mounting point for the transverse side roller 9, which is responsible for the downward pressure and correction action. This ensures that the transverse side roller 9 can maintain its position without significant displacement or loosening when in contact with the upper surface of the belt that has shifted and tilted, under the pressure of contact friction and compression. This ensures that the transverse side roller 9 can continuously output a stable and gentle downward pressing and reverse guiding force to the belt that has shifted.

[0024] Please see the appendix Figure 2 and attached Figure 3 In a preferred embodiment of the present invention, when the conveyor belt slips laterally while transporting coal over a long distance, a vertical side roller 8, which is arranged perpendicular to the ground and whose axis is parallel to the side of the upright plate 2, stands upright and blocks the outer edge of the belt. The vertical side roller 8, which is in an upright position, makes physical contact and exerts a squeezing action with the outer edge of the belt that is moving outward. The vertical side roller 8 dissipates the thrust transmitted from the side of the belt and converts it into its own rotational power. At the same time, the vertical side roller 8, with its stable support posture parallel to the upright plate 2, continuously outputs a reverse pushing and pulling force to the side of the belt, keeping the belt in operation within the set conveying trajectory range and preventing the belt from running off-track and causing coal spillage and equipment wear.

[0025] Please see the appendix Figure 2 -Appendix Figure 4 In a preferred embodiment of the present invention, when the conveyor belt of the coking coal unloading system slips laterally due to uneven force during material transport and its edges fold upwards, the transverse side roller 9, which is arranged parallel to the ground and whose own axis is parallel to the bottom surface of the top plate 3, is suspended and blocked in the area directly above the outer edge of the upper surface of the belt. At this time, the upper surface edge of the belt that has tilted upwards naturally comes into contact with the outer surface of the transverse side roller 9. The transverse side roller 9 generates a continuous and gentle downward guiding force with the help of the stable support force transmitted by the top plate 3 above. In addition, the transverse side roller 9 closely cooperates with the vertical side roller 8, which is responsible for resisting the lateral thrust, to carry out a two-way coordinated correction action, pressing down and pushing and pulling the belt edge that has tilted upwards, so that the belt edge can smoothly fall back to the normal conveying posture under the dual flexible physical constraints of the transverse and vertical directions.

[0026] Please see the appendix Figure 1 -Appendix Figure 3 In a preferred embodiment of the present invention, during the operation of the coking coal unloading system, where the conveyor belt deviates outward and the belt side is in continuous physical contact and compression with the vertical side roller 8, the universal standard bearing hidden inside the vertical side roller 8, in accordance with the linear velocity of the belt conveying forward and the lateral thrust, causes the vertical side roller 8 to rotate smoothly and freely around its own axis. Under the dual force environment of belt movement and lateral compression, the universal standard bearing plays a mechanical rotation transmission function, effectively changing the severe rigid sliding friction state between the belt side and the conventional static anti-deviation baffle, which originally easily caused belt tearing and severe physical wear, into a gentle force mode including rolling friction. This allows the vertical side roller 8 to continuously output a smooth reverse push-pull guiding force to the belt side that deviates from the trajectory while reducing the risk of damage to the belt rubber material.

[0027] Please see the appendix Figure 1 -Appendix Figure 4 In a preferred embodiment of the present invention, when the conveyor belt of the coking coal unloading system deviates laterally during material transport and the upper surface edge of the belt lifts up and touches the outer surface of the transverse side roller 9, the universal standard bearing hidden inside the transverse side roller 9 performs smooth mechanical transmission efficiency in accordance with the friction force of the belt moving forward and the upward extrusion force. This causes the transverse side roller 9 to flexibly rotate freely when it is in close contact with the upper surface edge of the displaced belt. This transforms the sliding friction between the upper surface of the belt and the transverse side roller 9, which is prone to damage, into a smooth rolling friction force mode. In this way, when the belt is guided to fall back smoothly to the normal conveying posture under pressure, the problem of the belt flipping upward is effectively eliminated and the risk of large-area physical wear on the belt edge is reduced.

[0028] Please see the appendix Figure 2 -Appendix Figure 4 In a preferred embodiment of the present invention, during the daily operation of the coking coal unloading conveyor system for transporting large quantities of coal over long distances, the inclined roller 4 arranged on the top of the support 1 and the horizontal roller 6, together with the lower roller 5 arranged in the area above the crossbar 7, stably support the bottom surface of the conveyor belt fully loaded with material. The inclined roller 4, the lower roller 5, and the horizontal roller 6 cooperate with each other in spatial position to form a basic conveying bearing structure that conforms to the contour of the bottom surface of the belt. As the belt continues to move forward, the basic conveying bearing structure continuously outputs a stable and evenly distributed upward support force to the bottom of the belt, enabling the belt carrying heavy coal material to maintain a stable conveying posture under heavy pressure and smoothly complete cross-regional material transfer operations. At the same time, it provides a solid and reliable bottom running support platform for the subsequent lateral physical push-pull correction action of the correction components located on the side and above the belt.

[0029] Please see the appendix Figure 1 -Appendix Figure 4 In a preferred embodiment of the present invention, at the instant when the conveyor belt of the coking coal unloading system shows a tendency to slip outward during material transport, the vertical side roller 8 and the horizontal side roller 9 suspended above the outer edge of the belt respond quickly and come into contact with and squeeze the edge of the belt. The two side rollers promptly implement active physical correction action at the initial stage of the belt deviating from the normal operating trajectory. They use the soft rolling friction generated by their own rotation to continuously output reverse guiding and pushing-pull forces to the belt, continuously pushing and pulling the belt in the deviated state back to the normal center operating area, thereby effectively preventing the risk of coal spillage and equipment wear caused by serious belt deviation.

[0030] Working Principle: When the conveyor belt of the coking coal unloading system continuously transports coal material forward on the basic conveying and bearing structure consisting of the inclined roller 4 and the horizontal roller 6 set at the top of the support 1 and the lower roller 5 installed above the crossbar 7, and deviates to one side due to uneven force, the outer edge of the belt that deviates to one side first comes into substantial contact with the vertical side roller 8, which is rotatably connected to the vertical plate 2 fixed to the outside of the support 1. The kinetic energy of the belt edge conveying forward and the lateral thrust cause the vertical side roller 8, equipped with a universal standard bearing, to rotate smoothly in place. Then, the vertical side roller 8, which is in a continuous rotating state, maintains close contact with the horizontal side roller 9, which is suspended below the semi-enclosed frame structure formed by the vertical plate 2 and the top plate 3. The rotation of the vertical side roller 8 drives the horizontal side roller 9, equipped with a universal standard bearing, to rotate synchronously. During the free rotation, the vertical side guard roller 8 and the horizontal side guard roller 9, which are in a mutually perpendicular combination, transform the rigid sliding friction force on the belt edge into a smooth rolling friction force mode during the coordinated rotation of the two wheels. The vertical side guard roller 8 blocks the belt from going lateral and crosses the boundary, while the horizontal side guard roller 9 simultaneously presses down the belt edge that is tilting upward. The vertical side guard roller 8 and the horizontal side guard roller 9 precisely use the rolling friction force generated by their mutual contact and squeezing to continuously apply a reverse pushing and pulling guiding force to the inside of the belt, so as to gently block the belt that has deviated from the running trajectory and smoothly push and pull it back to the normal center position. The entire operation process continuously responds to implement active physical correction actions, thereby effectively eliminating the problem of the belt flipping upward and reducing the physical wear of the belt edge and the risk of coal spillage along the line.

Claims

1. A 7-shaped active flexible belt alignment device for a coking coal unloading conveyor belt, comprising a support frame (1), characterized in that, A crossbar (7) is fixedly connected to the outside of the bracket (1). A lower roller (5) is provided on the top of the crossbar (7). An inclined roller (4) and a horizontal roller (6) are provided on the top of the bracket (1). A vertical plate (2) is installed on the outside of the bracket (1). A vertical side guard roller (8) is rotatably connected to the outside of the vertical plate (2). A top plate (3) is fixedly connected to the top of the vertical plate (2). A horizontal side guard roller (9) is rotatably connected to the bottom of the top plate (3). The vertical side guard roller (8) and the horizontal side guard roller (9) are located at the highest frequency position of the belt offset and are perpendicular to each other. In the straight combination, when the belt deviates to one side, the outer edge of the belt first contacts the vertical side guard roller (8) and drives the vertical side guard roller (8) to rotate. The vertical side guard roller (8) and the horizontal side guard roller (9) remain in contact. The rotation of the vertical side guard roller (8) drives the horizontal side guard roller (9) to rotate synchronously. The vertical side guard roller (8) and the horizontal side guard roller (9) use the rolling friction generated by the contact compression to generate a reverse pushing and pulling force on the belt, pushing the belt that deviates from the running trajectory back to the center position, thus completing the physical correction action.

2. The coking coal unloading conveyor belt 7-shaped active flexible correction device according to claim 1, characterized in that, The upright plate (2) is vertically fixed to the end of the support (1) away from the center of the belt by welding. The upright plate (2) adopts the in-situ fixing mode to retain the original foundation bearing structure of the support (1) and avoid damaging the support (1).

3. The coking coal unloading conveyor belt 7-shaped active flexible correction device according to claim 2, characterized in that, The top plate (3) extends horizontally a distance toward the center of the belt. The top plate (3) and the vertical plate (2) form a frame structure that is partially wrapped around the side edge of the belt, providing a stable mounting point for the transverse side guard roller (9).

4. The 7-shaped active flexible belt alignment device for coking coal unloading conveyor belts according to claim 3, characterized in that, The vertical side guard roller (8) is arranged in a direction perpendicular to the ground. The axis of the vertical side guard roller (8) is parallel to the side of the upright plate (2). The vertical side guard roller (8) is vertically blocked outside the side edge of the belt to prevent the belt from running off course and crossing the boundary in the lateral direction.

5. The coking coal unloading conveyor belt 7-shaped active flexible correction device according to claim 4, characterized in that, The transverse side guard roller (9) is arranged in a direction parallel to the ground. The axis of the transverse side guard roller (9) is parallel to the bottom surface of the top plate (3). The transverse side guard roller (9) blocks the belt hanging outside the edge of the upper surface of the belt and works with the vertical side guard roller (8) to press the belt that is tilted upward downward.

6. The coking coal unloading conveyor belt 7-shaped active flexible correction device according to claim 5, characterized in that, The vertical side guard roller (8) is equipped with a universal standard bearing. The universal standard bearing causes the vertical side guard roller (8) to rotate freely when it comes into contact with the side of the belt, changing the original intense sliding friction of the side of the belt into a gentle force mode that includes rolling friction.

7. The active flexible belt alignment device for a coking coal unloading conveyor belt according to claim 6, characterized in that, The transverse side guard roller (9) is equipped with a universal standard bearing. The universal standard bearing causes the transverse side guard roller (9) to rotate freely when it comes into contact with the edge of the upper surface of the belt, thereby eliminating the problem of the belt flipping upward and reducing the physical wear of the belt edge.

8. The 7-shaped active flexible belt alignment device for coking coal unloading conveyor belts according to claim 1, characterized in that, The inclined roller (4), the lower roller (5), and the horizontal roller (6) together support the bottom surface of the belt, and the inclined roller (4), the lower roller (5), and the horizontal roller (6) constitute the basic conveying and bearing structure of the belt.

9. A 7-shaped active flexible belt alignment device for coking coal unloading conveyor belts according to claim 8, characterized in that, The vertical side guard roller (8) and the horizontal side guard roller (9) perform active physical correction action at the moment the belt shows a tendency to shift, continuously pushing and pulling the belt in the offset state back to the normal center running area.

10. A method for active flexible belt alignment in a figure-seven pattern for coking coal unloading conveyor belts, characterized in that, The 7-shaped active flexible belt alignment device for a coking coal unloading conveyor belt, applicable to any one of claims 1-9, comprises the following steps: During the investigation and positioning phase, the specific locations on the belt conveyor line that are prone to deviation and coal spillage are identified. Under the premise of confirming that the original structure is not damaged, the vertical plate (2) and the top plate (3) are fixedly installed in the original position on the side of the support (1) that is prone to deviation. During the assembly and configuration stage, the vertical side guard roller (8) is rotatably installed on the vertical plate (2), and the horizontal side guard roller (9) is rotatably installed on the top plate (3). The two are accurately assembled and positioned on the same side and above the belt edge. In the active correction phase, the belt operation is started. When the belt deviates to one side, the edge of the belt directly contacts the vertical side roller (8) and the horizontal side roller (9). The rolling friction generated by the contact and squeezing forms a continuous flexible reverse guiding force, which automatically and gently pushes the deviated belt back to the center normal operating position, thus completing the active correction process.

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