A power plant conveying belt deviation prevention device

Abstract

The present application relates to the technical fields of deviation prevention, and discloses a power plant conveying belt deviation prevention device, which comprises a base frame, a bracket fixed on the base frame, a horizontal central carrier roller and two outwardly inclined side carrier rollers arranged on the bracket to form a groove type deviation correction carrier roller group, a support frame fixed on the side of the bracket, a vibration jumping and self-cleaning assembly installed on the support frame, the vibration jumping and self-cleaning assembly comprising a U-shaped frame, a transmission plate, a protrusion, an elastic reset member, a driving rod, a probe rod, a guide support ring and a limiting ring, the U-shaped frame being fixed on the end of the support frame, the transmission plate being hingedly connected to the inside of the U-shaped frame, the guide support ring being fixed on the support frame through the side frame, and the driving rod being vertically penetrated through the guide support ring. The present application realizes passive central correction of the belt by the groove type carrier roller group, reduces material leakage, triggers knocking self-cleaning by the weight of the material, and improves the operation stability and service life of the self-cleaning mechanism by mechanical limiting.

Description

Technical Field

[0001] This invention relates to the field of conveyor belt anti-deviation technology, specifically to a device for preventing conveyor belt deviation in thermal power plants. Background Technology

[0002] Coal conveying systems in thermal power plants generally use belt conveyor structures to complete the continuous transfer of coal materials. The belt conveyor with trough roller correction device is the core supporting equipment to ensure the smooth operation of the belt and is widely used in bulk material conveying operations in thermal power plants.

[0003] While existing trough-type idler belt correction structures can provide centered support and guidance for conveyor belts, slight belt misalignment and swaying still occur during operation, which can easily lead to localized material spillage over long-term operation. Furthermore, existing self-cleaning idler belt anti-deviation mechanisms often employ an unlimited straight-slide trigger structure, which is prone to overtravel and displacement instability during the reciprocating sliding of the drive rods. This can easily cause trigger misalignment, structural jamming, and component disengagement. The self-cleaning striking action has poor stability, and under long-term high-frequency operation, components wear out quickly, resulting in insufficient equipment reliability. Therefore, a conveyor belt anti-deviation device for thermal power plants is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a device for preventing belt misalignment in thermal power plants, thereby solving the aforementioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for preventing belt misalignment in thermal power plants, comprising: A base frame, on which a bracket is fixed, and a centrally located horizontal idler roller and two outwardly inclined side idler rollers are assembled on the bracket to form a trough-shaped correction idler roller group; The bracket has a side-fixed support frame, on which a vibration self-cleaning assembly is installed. The vibration self-cleaning assembly includes a U-shaped frame, a transmission plate, a protrusion, an elastic reset component, a drive rod, a probe rod, a guide support ring, and a limiting ring. The U-shaped frame is fixed to the end of the support frame, and the transmission plate is hinged to the inside of the U-shaped frame in the middle; the guide support ring is fixed to the support frame by the side frame, and the drive rod passes vertically through the guide support ring; The elastic reset component is disposed inside the bottom support frame of the transmission plate, and a probe is threadedly installed at the top of the drive rod, with the bottom end of the drive rod abutting against one end of the transmission plate; The protrusion is fixed at the end of the transmission plate away from the drive rod, and the protrusion is set towards the horizontal idler and the inclined idler. The base frame has extension frames on both sides and L-shaped extension plates at both ends. The limiting ring forms a mechanical limit through the size difference, which can precisely limit the maximum upward stroke of the drive rod, completely eliminating the failure of the drive rod to slide excessively upward and disengage from the guide support ring, ensuring the operational stability of the striking structure. At the same time, it can avoid problems such as the probe rod being too high, false triggering, or structural jamming caused by the overtravel of the drive rod, and standardize the sliding trajectory of the drive rod. This limiting structure is simple, reliable, requires no debugging, and requires zero maintenance. It can be adapted to high-frequency reciprocating striking conditions for a long time, greatly improving the overall service life and operational stability of the vibration self-cleaning component.

[0006] Preferably, the extension frame has a screw and a guide rod running parallel to each other. The screw is threaded to an L-shaped side frame, and the guide rod slides to limit the L-shaped side frame. The L-shaped side frame is vertically mounted with a vertical roller. Rotating the screw can adjust the lateral position of the vertical roller to match the belt width, thereby achieving lateral blocking of the belt's maximum deviation.

[0007] Preferably, the L-shaped mounting plate is integrally formed on both ends of the base frame, and the L-shaped mounting plate has through holes. Fasteners pass through the through holes to secure the whole machine, resulting in stronger installation stability.

[0008] Preferably, the elastic reset member is located below the drive rod, and can automatically push the drive rod to reset after being pressed down to achieve cyclic tapping.

[0009] Preferably, the transmission plate rotates around the hinge point of the U-shaped frame, driving the protrusion to repeatedly strike the outer wall of the horizontal idler roller and the inclined idler roller.

[0010] Preferably, the two inclined rollers are mounted on the bracket at an outward angle, and the conveyor belt is autonomously corrected to run in the center by relying on the inclined support component force.

[0011] Preferably, the guide rod and the screw are arranged parallel to each other on the extension frame, restricting the L-shaped side frame to only perform horizontal translation without rotational offset.

[0012] Preferably, the vertical roller is installed vertically at the top of the L-shaped side frame, which can laterally limit the large-scale displacement of the conveyor belt and prevent it from derailing.

[0013] Preferably, the support frame is fixed to the side of the bracket, and the self-cleaning component can swing synchronously with the bracket, with the correction and self-cleaning actions not interfering with each other.

[0014] Preferably, a limiting ring is fixedly provided on the bottom outer periphery of the drive rod, and the outer diameter of the limiting ring is larger than the inner diameter of the guide support ring.

[0015] Compared with the prior art, the present invention provides a device for preventing belt misalignment in thermal power plants, which has the following advantages: 1. The conveyor belt anti-deviation device in this thermal power plant achieves autonomous centering and correction of the conveyor belt through the structural arrangement of the trough-type correction roller group, which has the performance advantage of continuous passive correction and solves the problems of slight deviation and material spillage in traditional belt operation; through the material's own weight pressing the probe rod to trigger the drive rod and the lever flipping structure of the transmission plate, the roller achieves high-frequency vibration knocking self-cleaning, which has the advantage of passive automatic material cleaning and solves the problems of coal adhesion and slippage failure on the roller surface. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 This is a perspective view of the idler roller assembly of the present invention; Figure 3 This is a perspective view of the self-cleaning component for vibration vibration according to the present invention.

[0017] In the diagram: 1. Base frame; 2. Bracket; 3. Horizontal idler roller; 4. Inclined idler roller; 5. Extension frame; 6. L-shaped side frame; 7. Vertical roller; 8. Screw; 9. Guide rod; 10. L-shaped plate; 11. Perforation; 12. Support frame; 13. U-shaped frame; 14. Transmission plate; 15. Protrusion; 16. Elastic reset component; 17. Drive rod; 18. Probe rod; 19. Guide support ring; 20. Limiting ring. Detailed Implementation

[0018] This invention provides a technical solution: a device for preventing belt misalignment in thermal power plants. Please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3 The system includes: a base frame 1, a bracket 2 fixed on the base frame 1, and a centrally located horizontal idler roller 3 and two outwardly inclined idler rollers 4 mounted on the bracket 2 to form a trough-shaped correction idler roller group; a support frame 12 fixed to the side of the bracket 2, and a vibration self-cleaning assembly installed on the support frame 12, the vibration self-cleaning assembly including a U-shaped frame 13, a transmission plate 14, a protrusion 15, an elastic reset component 16, a drive rod 17, a probe rod 18, a guide support ring 19, and a limiting ring 20; the U-shaped frame 13 is fixed to the end of the support frame 12, and the transmission plate 14 is hinged to the U-shaped frame in the middle. 13. Inside; the guide support ring 19 is fixed to the support frame 12 by the side frame, and the drive rod 17 vertically passes through the guide support ring 19; the elastic reset member 16 is set inside the bottom support frame 12 of the transmission plate 14, the top of the drive rod 17 is threaded with a probe rod 18, and the bottom of the drive rod 17 abuts against one end of the transmission plate 14; the protrusion 15 is fixed at the end of the transmission plate 14 away from the drive rod 17, and the protrusion 15 is set towards the horizontal idler roller 3 and the inclined idler roller 4; the base frame 1 has extension frames 5 on both sides, and L-shaped ramps 10 at both ends of the base frame 1; The base frame 1 is fixed to the support bracket 2. The bracket 2 is equipped with a centrally positioned horizontal idler roller 3 and double-sided inclined idler rollers 4 to form a groove-shaped correction structure. The support frame 12 is equipped with a complete set of vibration self-cleaning components. The U-shaped frame 13 is fixed to the end of the support frame 12 and hinged to the transmission plate 14. The guide support ring 19 is fixed to the side of the support frame 12, and the drive rod 17 runs vertically through it. A limiting ring 20 is provided at the bottom to limit and prevent it from falling out. The elastic reset component 16 is built into the bottom of the support frame 12, below the transmission plate 14. The top of the drive rod 17 is threaded with a probe rod 18, and the bottom end abuts against the transmission plate 14. The end of the transmission plate 14 is fixed with a protrusion 15 facing the idler roller to adjust the height of the probe rod 18. It integrates the base frame 1, bracket 2, trough-type idler roller correction structure, and a complete set of vibration self-cleaning components, achieving a high degree of structural integration. The drive rod 17 achieves precise vertical sliding limit via the guide support ring 19 and limit ring 20. The threaded probe 18 is easy to disassemble and assemble, and can be flexibly replaced and maintained. The elastic reset component 16, the hinged transmission plate 14, and the protrusion 15 form a passive striking structure, requiring no external power and triggering the self-cleaning action based on material conveying. Simultaneously, the inclined idler roller 4, combined with the horizontal idler roller 3, enables autonomous belt correction, effectively solving the two core problems of coal sticking and slippage on idler rollers in thermal power plants and belt misalignment, making it suitable for long-term continuous operation of coal conveyor belts.

[0019] Please see Figure 1 and Figure 2 The extension frame 5 is parallel to the screw 8 and the guide rod 9. The screw 8 is fitted with an L-shaped side frame 6 by external thread. The guide rod 9 slides to limit the L-shaped side frame 6. The L-shaped side frame 6 is vertically mounted with a vertical roller 7. Rotating the screw 8 can adjust the lateral position of the vertical roller 7 to match the belt width, thereby achieving lateral blocking of the belt's extreme deviation. A screw 8 and a guide rod 9 are parallelly threaded onto the extension frame 5. The L-shaped side frame 6 is fitted with the screw 8 via a threaded structure and is slidably fitted onto the outside of the guide rod 9. The vertical roller 7 is vertically fixedly installed on the top of the L-shaped side frame 6. The operator can manually rotate the screw 8 to drive the L-shaped side frame 6 to move horizontally along the guide rod 9, which in turn drives the vertical roller 7 to move laterally, adapting to conveyor belts of different widths. The combined structure of screw 8 and guide rod 9 enables stepless fine-tuning of the lateral position of vertical roller 7, making it adaptable to various widths of coal conveyor belts in thermal power plants, demonstrating strong versatility. Guide rod 9 effectively limits the rotational offset of L-shaped side frame 6, ensuring adjustment accuracy and operational stability, and preventing vertical roller 7 from skewing and failing. Vertical roller 7 can provide lateral rigid blocking for belts that are significantly off-track or close to derailment, serving as a backup protection for idler roller correction, forming a double-layer anti-deviation system. This significantly reduces the probability of belt deviation, edge rubbing, and derailment failures, making it suitable for heavy-load coal conveying conditions.

[0020] L-shaped mounting plate 10 is integrally formed on both ends of the base frame 1. The L-shaped mounting plate 10 has through holes 11. Fasteners pass through the through holes 11 to snap and fix the whole machine, making the installation more stable. The L-shaped ramp 10 is integrally formed and fixed to both ends of the base frame 1, with no splicing gaps in the overall structure. The ramp has through holes 11. During installation, the L-shaped ramp 10 is snapped onto the mounting surface of the coal conveyor frame and locked in place using fasteners through the through holes 11, thus completing the positioning and installation of the entire machine. The assembly operation is simple and quick. The L-shaped mounting plate 10 is integrally formed with the base frame 1, resulting in high structural strength and resistance to deformation and cracking. Compared to separate welded structures, it effectively avoids problems such as weld detachment and deformation. Combined with the through-holes 11 and fasteners, it achieves a snap-fit ​​fixation, providing a larger contact surface with the frame, even stress distribution, and significantly improving the overall installation stability. It effectively resists the risk of loosening caused by equipment vibration and material impact during coal conveying in thermal power plants, avoids problems such as deviation and tilt leading to correction failure and self-cleaning malfunction, reduces equipment maintenance frequency, and is suitable for long-term vibration operation conditions.

[0021] Please see Figure 3 The elastic reset element 16 is located below the drive rod 17. After being pressed down, it can automatically push the drive rod 17 to reset and realize the cyclic tapping. The elastic reset element 16 is assembled inside the support frame 12, directly below the drive rod 17. When the drive rod 17 slides down under the pressure of the material, it will squeeze the elastic reset element 16 to generate deformation and store energy. When the material leaves the probe rod 18 and the downward pressure disappears, the elastic reset element 16 releases its elastic force and automatically pushes the drive rod 17 to reset upward, preparing for the second tapping action. The elastic reset component 16, as the core passive reset component, requires no auxiliary equipment such as motors or electrical controls. It relies on elastic deformation to achieve automatic reset of the drive rod 17, resulting in a simple structure, zero energy consumption, and an extremely low failure rate. It can be used in conjunction with the intermittent material conveying characteristics to achieve continuous cyclical self-cleaning action, ensuring timely removal of coal dust from the idler roller surface and preventing coal accumulation and solidification. Simultaneously, the reset response is rapid, matching the high-speed conveyor belt rhythm, and avoiding self-cleaning interruptions caused by reset lag, perfectly meeting the continuous coal conveying operation requirements of thermal power plants.

[0022] The transmission plate 14 rotates around the hinge point of the U-shaped frame 13, driving the protrusion 15 to reciprocate and strike the outer walls of the horizontal idler roller 3 and the inclined idler roller 4. The transmission plate 14 is hinged in the middle and installed inside the U-shaped frame 13, allowing it to rotate and swing flexibly around the hinge point. When the bottom end of the drive rod 17 presses down on one end of the transmission plate 14, the other end of the transmission plate 14 is lifted in the opposite direction and then quickly falls back, driving the protrusion 15 fixed at the end to reciprocate and strike the outer walls of the horizontal idler roller 3 and the inclined idler roller 4, thus completing the vibration cleaning. The transmission plate 14, relying on the hinged structure of the U-shaped frame 13, forms a lever-type striking mechanism, amplifying the downward pressure of the drive rod 17 and enhancing the striking vibration effect of the protrusion 15, resulting in stronger material cleaning capabilities. The lever-type flipping action has a stable stroke and uniform force distribution, allowing for all-around striking of the horizontal idler roller 3 and the inclined idler roller 4, effectively shaking off sticky coal powder and clumps of accumulated material. This purely mechanical structure has no electronic components or easily damaged precision parts, exhibits excellent dust and vibration resistance, is suitable for the harsh operating environment of thermal power plants with high dust levels and high loads, and boasts a long service life and low maintenance costs.

[0023] Please see Figure 1 and Figure 2 The two inclined idlers 4 are mounted on the bracket 2 at an outward angle, and the conveyor belt is automatically corrected to run in the center by relying on the inclined support component force; the horizontal idler 3 is mounted horizontally in the middle of the bracket 2, and the two inclined idlers 4 are symmetrically inclined outward and fixed at both ends of the bracket 2. The three together form a trough-shaped support structure, which closely fits the bottom of the conveyor belt and provides all-round support for the belt. At the same time, the inclined structure generates a lateral return force. The horizontal idler 3, together with the double-sided inclined idler 4, forms a standard trough-shaped idler group. This not only stably supports the weight of the belt and the coal material, preventing belt collapse and deformation, but also continuously generates a lateral return force through the oblique support force of the inclined idler 4, enabling the belt to autonomously center and correct its deviation. It can correct minor deviation problems in real time, reducing belt misalignment, localized wear, material spillage, and other faults at the source. It is suitable for long-distance, heavy-load, and continuous belt conveyor conditions in thermal power plants, significantly improving belt operation stability and conveying efficiency.

[0024] Guide rod 9 and screw 8 are arranged parallel to each other on extension frame 5, restricting the L-shaped side frame 6 to only horizontal translation without rotation or offset; screw 8 and guide rod 9 are fixedly arranged parallel to each other on extension frame 5, providing bidirectional limiting constraints on the movement of L-shaped side frame 6. L-shaped side frame 6 can only perform horizontal translation along the axis of guide rod 9, completely restricting its rotation, offset, swaying and other unnecessary displacements, ensuring precise and controllable adjustment actions; The parallel positioning and limiting action of screw 8 and guide rod 9 completely eliminates rotation, jamming, and misalignment issues that occur during the adjustment of the L-shaped side frame 6, significantly improving the position adjustment accuracy and stability of the vertical roller 7. This effectively prevents the vertical roller 7 from pressing against the belt and wearing the belt side due to side frame misalignment, ensuring smooth belt operation. The double-rod limiting structure has stronger rigidity and excellent vibration resistance, making it suitable for long-term vibration operation scenarios in thermal power plant equipment, ensuring the long-term accuracy and effectiveness of the limiting adjustment structure without frequent calibration and maintenance.

[0025] The vertical roller 7 is vertically installed at the top of the L-shaped side frame 6, which can laterally limit the conveyor belt from derailing if it deviates significantly. The vertical roller 7 is vertically fixed at the top of the L-shaped side frame 6, and is arranged vertically, corresponding to the left and right sides of the conveyor belt. When the belt shows a significant tendency to deviate, the side of the belt can fit against the roller surface of the vertical roller 7 to achieve lateral limiting and blocking, avoiding the risk of belt derailment. The vertically arranged vertical rollers 7 provide lateral bottom-stop protection for conveyor belts that deviate significantly or exceed the threshold deviation, compensating for the limitation of idler roller groups which can only make minor adjustments to correct deviations, thus constructing a dual protection system against both minor and major deviations. The vertical rollers 7 can rotate freely and make flexible contact with the side of the belt, significantly reducing side friction and wear, and avoiding the problem of belt damage caused by traditional rigid guide rollers. This effectively prevents belt derailment, large-scale material spillage, and equipment jamming, greatly improving the safety and stability of coal conveyor belt operation in thermal power plants.

[0026] Please see Figure 1 and Figure 3 The support frame 12 is fixedly connected to the side of the bracket 2. The self-cleaning component can swing synchronously with the bracket 2, and the correction and self-cleaning actions do not interfere with each other. The support frame 12 is firmly fixedly connected to the side of the bracket 2. The entire set of self-cleaning components is mounted on the support frame 12, forming an integrated structure with the bracket 2 and the trough roller group. It can swing synchronously with the bracket 2 to adjust itself and is compatible with belt correction actions. The support frame 12 integrates the self-cleaning component with the bracket 2, allowing the self-cleaning structure to swing and align synchronously with the idler roller assembly, completely resolving the industry pain points of fixed installation and interference with the alignment action of traditional self-cleaning devices. Whether the idler roller assembly is centered or in a swinging correction state, the protrusion 15 can precisely correspond to the outer wall of the idler roller to knock and clean the material, ensuring that the correction and self-cleaning functions operate synchronously without interference. The structure has a high degree of integration and a compact layout, does not occupy additional installation space, and is suitable for retrofitting existing belt conveyor equipment, exhibiting strong versatility and adaptability.

[0027] A limiting ring 20 is fixedly provided on the outer periphery of the bottom of the drive rod 17. The outer diameter of the limiting ring 20 is larger than the inner diameter of the guide support ring 19. The limiting ring 20 is fixedly sleeved on the outer periphery of the bottom of the drive rod 17, and its outer diameter is larger than the inner diameter of the guide support ring 19, forming a structural limit. When the drive rod 17 slides upward, the limiting ring 20 can abut against the lower end of the guide support ring 19, limiting the maximum upward stroke of the drive rod 17 and preventing it from dislodging from the guide support ring 19. The limiting ring 20 forms a mechanical limit through dimensional differences, precisely restricting the maximum upward stroke of the drive rod 17. This completely eliminates the possibility of the drive rod 17 slipping excessively upwards or dislodging from the guide support ring 19, ensuring the operational stability of the striking structure. Simultaneously, it prevents the probe 18 from becoming too high, causing false triggering, or structural jamming due to overtravel of the drive rod 17, thus standardizing the sliding trajectory of the drive rod 17. This limiting structure is simple, reliable, requires no debugging, and is maintenance-free. It can be adapted to high-frequency reciprocating striking conditions for extended periods, significantly improving the overall service life and operational stability of the self-cleaning vibration assembly.

[0028] This solution: The conveyor belt carrying the coal material runs on the surface of the horizontal idler rollers 3 and inclined idler rollers 4 assembled on the bracket 2. The outwardly inclined idler rollers 4 apply a lateral force to the belt, realizing automatic anti-deviation of the conveyor belt foundation; the rotating screw 8 and the parallel guide rods 9 restrict the rotation of the L-shaped side frame 6, converting the rotational motion of the screw 8 into the horizontal displacement of the L-shaped side frame 6 and the vertical rotating roller 7, thereby adapting to conveyor belts of different widths. The vertical rotating roller 7 can laterally prevent extreme belt deviation. The material is conveyed and pressed down on the probe rod 18. The drive rod 17 slides vertically down along the guide support ring 19 and hits the transmission plate 14. The transmission plate 14 flips under the support of the hinge fulcrum of the U-shaped frame 13. The end protrusion 15 hits the outer wall of the horizontal idler roller 3 and the inclined idler roller 4. After the material leaves the probe rod 18 with the belt, the elastic reset member 16 pushes the drive rod 17 upward to complete the reset. The material is continuously conveyed and the knocking action is triggered in a cycle. The high-frequency micro-vibration peels off the coal powder attached to the surface of the idler roller. The whole set of equipment is fixed on the coal conveyor frame by the L-shaped plates 10 and the through holes 11 at both ends of the base frame 1 and the fasteners. The support frame 12 integrates the jumping vibration self-cleaning component with the bracket 2. It swings synchronously with the idler roller assembly. The correction and self-cleaning actions do not interfere with each other.

Claims

1. A device for preventing belt misalignment in thermal power plants, characterized in that, include: A base frame (1) is fixed on the base frame (1), and a bracket (2) is mounted on the bracket (2). A centrally located horizontal roller (3) and two outwardly inclined rollers (4) are assembled on the bracket (2) to form a groove-shaped correction roller group. The bracket (2) has a side fixed support frame (12), and the support frame (12) is equipped with a vibration self-cleaning component. The vibration self-cleaning component includes a U-shaped frame (13), a transmission plate (14), a protrusion (15), an elastic reset component (16), a drive rod (17), a probe rod (18), a guide support ring (19), and a limiting ring (20). The U-shaped frame (13) is fixed to the end of the support frame (12), and the transmission plate (14) is hinged in the middle of the U-shaped frame (13); the guide support ring (19) is fixed to the support frame (12) through the side frame, and the drive rod (17) passes vertically through the guide support ring (19). The elastic reset member (16) is located inside the bottom support frame (12) of the transmission plate (14), and the top end of the drive rod (17) is threaded with a probe rod (18), and the bottom end of the drive rod (17) abuts against one end of the transmission plate (14). The protrusion (15) is fixed at the end of the transmission plate (14) away from the drive rod (17), and the protrusion (15) is set towards the horizontal idler (3) and the inclined idler (4); The base frame (1) has extension frames (5) on both sides and L-shaped extension plates (10) at both ends.

2. The anti-deviation device for conveyor belts in thermal power plants according to claim 1, characterized in that: The extension frame (5) is parallel to the screw (8) and the guide rod (9). The screw (8) is fitted with an L-shaped side frame (6) by external thread. The guide rod (9) slides to limit the L-shaped side frame (6). The L-shaped side frame (6) is vertically fitted with a vertical roller (7).

3. The anti-deviation device for conveyor belts in thermal power plants according to claim 1, characterized in that: The L-shaped mounting plate (10) is integrally formed on both ends of the base frame (1), and the L-shaped mounting plate (10) has through holes (11).

4. The anti-deviation device for conveyor belts in thermal power plants according to claim 1, characterized in that: The elastic reset component (16) is located below the drive rod (17). After being pressed down, it can automatically push the drive rod (17) to reset and realize cyclic knocking.

5. The anti-deviation device for conveyor belts in thermal power plants according to claim 1, characterized in that: The transmission plate (14) rotates with the hinge point of the U-shaped frame (13) as the fulcrum, driving the protrusion (15) to repeatedly strike the outer wall of the horizontal idler (3) and the inclined idler (4).

6. The anti-deviation device for conveyor belts in thermal power plants according to claim 1, characterized in that: The two inclined rollers (4) are mounted on the bracket (2) at an outward angle, and the conveyor belt is centered by relying on the inclined support component force to automatically correct the conveyor belt.

7. A conveyor belt anti-deviation device for thermal power plants according to claim 2, characterized in that: The guide rod (9) and the screw (8) are arranged parallel to each other on the extension frame (5), restricting the L-shaped side frame (6) to only make horizontal translation without rotational offset.

8. A conveyor belt anti-deviation device for thermal power plants according to claim 2, characterized in that: The vertical roller (7) is installed vertically on the top of the L-shaped side frame (6), which can laterally limit the large-scale displacement of the conveyor belt to prevent it from derailing.

9. A conveyor belt anti-deviation device for thermal power plants according to claim 1, characterized in that: The support frame (12) is fixed to the side of the bracket (2), and the self-cleaning component can swing synchronously with the bracket (2), with the correction and self-cleaning actions not interfering with each other.

10. A conveyor belt anti-deviation device for thermal power plants according to claim 1, characterized in that: A limiting ring (20) is fixedly provided on the bottom outer periphery of the drive rod (17), and the outer diameter of the limiting ring (20) is larger than the inner diameter of the guide support ring (19).

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