Mining belt wear and tear prevention device

Abstract

The utility model relates to the technical field of mine belt, and disclose mine belt anti -wear tearing device, including the belt main part and horizontal steel beam, two opposite distribution's support steel spare is fixed to horizontal steel beam one side, and the buffer operation groove is set up to support steel spare one end, and the buffer support roller is connected with the buffer operation groove inner wall slidingly. The utility model discloses through top side damper and bottom damper respectively from two directions to the buffer support roller support and the slow shock of buffering, and top side damper and bottom damper buffer through the spring of self, and after being impacted, top side damper assists bottom damper reset and pulls up the buffer support roller again, prevents the fatigue and ageing of elastic element, guarantees good buffering effect to improve the protection effect and service life of belt, and the buffer support roller makes material and belt form surface contact instead of linear contact, and the contact area expands, and the pressure reduces accordingly, effectively avoids the wear and tear of local puncture caused by stress concentration.

Description

Technical Field

[0001] This utility model belongs to the field of mining belt technology, and specifically relates to a wear and tear prevention device for mining belts. Background Technology

[0002] Mining belt conveyors, also known as belt conveyors or belt conveyors, are indispensable key equipment in mining operations. They consist of a truss structure, conveyor belt, drive drum, and multiple idlers.

[0003] In existing technologies, the material handling system of belt conveyors in industries such as mining and coal mining is most prone to wear and tear at the material drop point or receiving point. Existing technologies typically install rigid idlers below this point to support the belt and material.

[0004] However, rigid idlers or buffer beds have limited energy absorption and cannot effectively mitigate the huge impact force of large, sharp or high-speed falling materials. The strong impact energy acts directly on the belt surface, which not only accelerates the wear of the belt cover layer, but also easily causes damage to the belt skeleton material or even longitudinal tearing due to instantaneous stress concentration, resulting in huge economic losses and downtime maintenance costs.

[0005] Furthermore, many idlers with buffer structures adopt a unidirectional support design, whose main function is to withstand the impact force of falling ore. However, in actual operation, the ore does not move away instantly after falling, but continues to accumulate and press on the idlers and buffer devices. This causes the structure to bear additional static and dynamic loads of ore for a long time, even though it already bears the weight of the idlers themselves. This continuous pressure makes it difficult for the buffer to rebound and reset quickly, and it is always in a state of compression or stress. This not only greatly weakens the sustainability of its buffering effect, but also accelerates the fatigue and aging of elastic elements, further affecting the protection effect and service life of the belt. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a wear-resistant and tear-resistant device for mining conveyor belts.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a mining conveyor belt anti-wear and tear device, comprising a conveyor belt body and a cross steel beam. Two opposing supporting steel members are fixed on one side of the cross steel beam. A buffer running groove is opened at one end of the supporting steel member. A buffer idler is slidably connected to the inner wall of the buffer running groove. A cross connecting column is fixed at both ends of the buffer idler. A top side damper is fixed at the corresponding position at both ends of the cross connecting column. A bottom damper is fixed at the corresponding position at both ends of the buffer idler. One end of the bottom damper is fixed to the side of the cross steel beam near the buffer idler.

[0008] Preferably, the supporting steel member has an installation groove on one side, and a bottom damper is provided on the inner wall of the installation groove; the supporting steel member has a limiting and fixing groove on both sides, and a top side damper is provided on the inner wall of the limiting and fixing groove.

[0009] Preferably, the end of the supporting steel member near the buffer roller is configured as a triangular end, and the angle of the inclined surface on the side of the triangular end away from the buffer roller is greater than the angle of the inclined surface on the side of the triangular end near the buffer roller.

[0010] Preferably, auxiliary limiting grooves are provided on both sides of the inner wall of the buffer running groove, and a limiting wing plate is slidably connected to the inner wall of the auxiliary limiting groove. One end of the limiting wing plate is fixed to one side of the end of the buffer roller.

[0011] Preferably, the inner wall end of the buffer running groove is configured as an arc shape that matches the end of the buffer roller, and a rubber pad is glued and fixed to the inner wall end of the buffer running groove.

[0012] Preferably, the buffer roller includes a shaft column, and a roller is rotatably connected to the circumferential surface of the shaft column. The circumference of the roller is covered with a rubber layer, the thickness of which is not less than three centimeters. A nylon layer is fixed to the inner circumferential surface of the rubber layer, and the nylon layer is located between the rubber layer and the roller.

[0013] Preferably, a plurality of supporting steel members are fixed with sliding columns on their sides; a U-shaped fixing member is fixed at both ends of the shaft column of the buffer roller, and a rotating connecting rod is rotatably connected to the end of the U-shaped fixing member near the sliding column. A sliding cylinder is rotatably connected to the end of the rotating connecting rod near the sliding column, and a return spring is fixed to the side of a plurality of sliding cylinders on their sides.

[0014] Preferably, side steel frames are distributed opposite each other at both ends of the horizontal steel beam, one end of the side steel frame is fixed to the surface of the horizontal steel beam, the height of the side steel frame is higher than the height of the supporting steel member, and a rotatable inclined roller is provided between the side steel frame and the supporting steel member.

[0015] In summary, this utility model has the following beneficial effects:

[0016] 1. This utility model supports and dampens the buffer idler from two directions using a top-side damper and a bottom damper. When impacted by ore, the buffer idler moves towards the horizontal steel beam along the buffer running groove. The top-side damper and the bottom damper are buffered by their own springs. The springs absorb the vibration and convert it into elastic potential energy. When the elastic potential energy is released, it is blocked by the damping fluid of the top-side damper and the bottom damper, converting the elastic potential energy into internal energy, thus buffering. The top-side damper is located at the high point of the buffer idler, while the bottom damper is located at the low point. When not in use, the top-side damper shares the force of the bottom damper on the buffer idler. After impact, it assists the bottom damper in resetting and pulling the buffer idler back up, preventing fatigue and aging of the elastic element, ensuring a good buffering effect, thereby improving the protection effect and service life of the belt. The buffer idler makes the material and the belt form a surface contact rather than a line contact, increasing the contact area and reducing the pressure, effectively avoiding wear and tear caused by local punctures due to stress concentration.

[0017] 2. This utility model uses a sliding column to pull and fix two opposing bottom dampers to prevent them from tilting outward when the buffer roller is under pressure. At the same time, U-shaped fixing parts are fixed at both ends of the shaft of the buffer roller. When the buffer roller moves downward, the connecting rod rotates and pushes the two sliding cylinders closer to the central axis of the sliding column, squeezing the return spring to accumulate elastic potential energy. The impact of the buffer roller is converted into elastic potential energy by the return spring, preventing the buffer roller from being damaged by a large instantaneous impact. When the return spring releases the elastic potential energy, it assists the bottom damper and the top damper in resetting, further ensuring a good buffering effect, thereby improving the protection effect and service life of the belt.

[0018] 3. This utility model uses higher side steel frames on both sides to make the sides of the belt body curve upwards, preventing material from splashing during material drop. This prevents fine material from entering between the sides of the belt body and the steel frame, causing abnormal friction and wear. This method prevents wear or tearing of the belt body caused by splashed material. At the same time, the side steel frames create inclined surfaces on both sides of the belt body, so that some material does not directly impact the buffer rollers, but slides slowly along the inclined surfaces and gradually falls onto the surface of the belt body, reducing direct impact on the middle of the belt body and the buffer rollers, further ensuring the buffering effect. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the inclined idler roller of this utility model;

[0021] Figure 3 This is a schematic diagram of the side steel frame of this utility model;

[0022] Figure 4This is a schematic diagram of the supporting steel component of this utility model;

[0023] Figure 5 This is a schematic diagram of the slide tube of this utility model;

[0024] Figure 6 This is an exploded view of the sliding column of this utility model;

[0025] Figure 7 This is a schematic diagram of the horizontal connecting column of this utility model;

[0026] Figure 8 This is a cross-sectional view of the bottom damper of this utility model.

[0027] Figure label:

[0028] 1. Belt conveyor body; 101. Horizontal steel beam;

[0029] 2. Buffer roller; 201. Support steel component; 202. Bottom damper; 203. Buffer running groove; 204. Horizontal connecting column; 205. Top side damper;

[0030] 3. Triangular end;

[0031] 4. Auxiliary limiting groove; 401. Limiting wing plate;

[0032] 5. Mounting slot; 501. Restriction and fixing slot;

[0033] 6. U-shaped fastener; 601. Rotary connecting rod; 602. Slide cylinder; 603. Return spring; 604. Slide column;

[0034] 7. Side steel frame; 701. Inclined idler roller. Detailed Implementation

[0035] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0036] The specific embodiments of this utility model are described below with reference to the accompanying drawings:

[0037] Example 1:

[0038] refer to Figures 1-8The anti-wear and tear device for mining conveyor belts includes a conveyor belt body 1 and a horizontal steel beam 101. Two opposing support steel members 201 are fixed on one side of the horizontal steel beam 101. A buffer running groove 203 is opened at one end of the support steel member 201. A buffer roller 2 is slidably connected to the inner wall of the buffer running groove 203. A horizontal connecting column 204 is fixed at both ends of the buffer roller 2. A top side damper 205 is fixed at the corresponding position at both ends of the horizontal connecting column 204. A bottom damper 202 is fixed at the corresponding position at both ends of the buffer roller 2. One end of the bottom damper 202 is fixed to the side of the horizontal steel beam 101 near the buffer roller 2.

[0039] Specifically, the top-side damper 205 and the bottom damper 202 support and dampen the buffer roller 2 from two directions respectively. Thus, when impacted by ore, the buffer roller 2 moves closer to the horizontal steel beam 101 along the buffer running groove 203. The top-side damper 205 and the bottom damper 202 buffer the impact through their own springs. The springs absorb the vibration and convert it into elastic potential energy. When the elastic potential energy is released, it is prevented by the damping fluid of the top-side damper 205 and the bottom damper 202, converting the elastic potential energy into internal energy, thereby achieving buffering. The top-side damper 205 is located on the buffer roller... The top damper 205 is located at the high point of the buffer roller 2, while the bottom damper 202 is located at the low point of the buffer roller 2. When not in use, the top damper 205 shares the force of the buffer roller 2 borne by the bottom damper 202. After being impacted, it assists the bottom damper 202 in resetting and pulling the buffer roller 2 back up, preventing fatigue and aging of the elastic element, ensuring a good buffering effect, thereby improving the protection effect and service life of the belt. The buffer roller 2 makes the material and the belt form a surface contact rather than a line contact, increasing the contact area and reducing the pressure, effectively avoiding wear and tear caused by local punctures due to stress concentration.

[0040] A mounting groove 5 is provided on one side of the supporting steel component 201, and a bottom damper 202 is provided on the inner wall of the mounting groove 5; a limiting and fixing groove 501 is provided on both sides of the supporting steel component 201, and a top side damper 205 is provided on the inner wall of the limiting and fixing groove 501.

[0041] Specifically, the installation slot 5 facilitates the installation and maintenance of the bottom damper 202 by the staff, while the limiting and fixing slot 501 facilitates the installation and maintenance of the top side damper 205 by the staff. At the same time, the limiting and fixing slot 501 can prevent the top side damper 205 from detaching from the inner wall of the supporting steel part 201, so that the top side damper 205 always maintains its predetermined position and improves the stability of the equipment.

[0042] The end of the supporting steel component 201 near the buffer roller 2 is set as a triangular end 3, and the angle of the inclined surface of the side of the triangular end 3 away from the buffer roller 2 is greater than the angle of the inclined surface of the side of the triangular end 3 near the buffer roller 2.

[0043] Specifically, the triangular end 3 changes the overall lateral shape of the support steel member 201, especially preventing the top of the support steel member 201 from deforming. The stable triangular end 3 ensures that the support steel member 201 maintains a stable structure without deformation while passing support force to the buffer roller 2.

[0044] Auxiliary limiting grooves 4 are provided on both sides of the inner wall of the buffer running groove 203. A limiting wing plate 401 is slidably connected to the inner wall of the auxiliary limiting groove 4. One end of the limiting wing plate 401 is fixed to one side of the end of the buffer roller 2. The end of the inner wall of the buffer running groove 203 is set into an arc shape that matches the end of the buffer roller 2. A rubber pad is glued to the end of the inner wall of the buffer running groove 203.

[0045] Specifically, due to the uneven impact of materials on the buffer roller 2, the sliding path of the buffer roller 2 is restricted to remain vertical by the auxiliary limiting groove 4 and the limiting wing plate 401. This prevents the buffer roller 2 from shaking or deviating in the buffer running groove 203, thus increasing the service life of the buffer roller 2 and the supporting steel part 201. At the same time, the arc shape of the buffer running groove 203, which matches the buffer roller 2, increases the contact area with the buffer roller 2, reduces the pressure per unit area, prevents deformation of the inner wall of the supporting steel part 201 and the buffer running groove 203, and increases the service life of both. Meanwhile, the rubber pad provides cushioning for the contact between the buffer roller 2 and the buffer running groove 203, thereby further improving their service life.

[0046] The buffer roller 2 includes a shaft column, and a roller is rotatably connected to the circumference of the shaft column. The roller is covered with a rubber layer with a thickness of not less than three centimeters. A nylon layer is fixed to the inner circumference of the rubber layer and is located between the rubber layer and the roller.

[0047] Specifically, the rubber layer of the buffer roller 2 provides further cushioning and prevents deformation of the surface of the buffer roller 2 caused by impact. The nylon layer can assist the rubber layer of the buffer roller 2 in restoring its original position and can limit the deformation of the rubber layer, thereby improving the service life of the buffer roller 2.

[0048] Multiple supporting steel parts 201 are fixed with sliding columns 604 on their sides; U-shaped fixing parts 6 are fixed at both ends of the shaft column of the buffer roller 2. The end of the U-shaped fixing part 6 near the sliding column 604 is rotatably connected to a rotating connecting rod 601. The end of the rotating connecting rod 601 near the sliding column 604 is rotatably connected to a sliding cylinder 602. Multiple sliding cylinders 602 are fixed with return springs 603 on their sides.

[0049] Specifically, the sliding column 604 pulls and fixes two opposing bottom dampers 202 to prevent them from tilting outward when the buffer roller 2 is compressed. At the same time, U-shaped fixing parts 6 are fixed at both ends of the shaft of the buffer roller 2. When the buffer roller 2 moves downward, the connecting rod 601 rotates and pushes the two sliding cylinders 602 closer to the central axis of the sliding column 604 and squeezes the return spring 603 to accumulate elastic potential energy. The impact of the buffer roller 2 is converted into elastic potential energy by the return spring 603, preventing the buffer roller 2 from being damaged by a large instantaneous impact. When the return spring 603 releases the elastic potential energy, it assists the bottom damper 202 and the top damper 205 in resetting, further ensuring a good buffering effect and thus improving the protection effect and service life of the belt.

[0050] Side steel frames 7 are distributed at both ends of the horizontal steel beam 101. One end of the side steel frame 7 is fixed to the surface of the horizontal steel beam 101. The height of the side steel frame 7 is higher than the height of the supporting steel component 201. A rotatable inclined roller 701 is provided between the side steel frame 7 and the supporting steel component 201.

[0051] Specifically, the higher side steel frames 7 on both sides cause the sides of the belt body 1 to be upturned, preventing material from splashing during material drop. This prevents small materials from entering between the sides of the belt body 1 and the steel frame, causing abnormal friction and wear. This method prevents the belt body 1 from being worn or torn due to jamming caused by splashed materials. At the same time, the side steel frames 7 create inclined surfaces on both sides of the belt body 1, so that some materials do not directly impact the buffer rollers 2, but slide slowly along the inclined surfaces and gradually fall onto the surface of the belt body 1, reducing the direct impact on the middle of the belt body 1 and the buffer rollers 2, further ensuring the buffering effect. When no material is falling, the belt body 1 is usually still in a flat state. After the material falls in, it forms a shallow groove state, and at this time, the height of the inclined rollers 701 on both sides is slightly higher than the height of the two ends of the belt body 1. At this time, the height of the belt body 1 at the inclined rollers 701 is slightly higher than the height of the two end drive rollers.

[0052] Example 2:

[0053] refer to Figures 1-8 The staff used the structure disclosed in this utility model in the main conveying system of a large open-pit coal mine;

[0054] A set of mining belt anti-wear and tear protection devices is installed at the material drop point of the ST800 steel wire rope core conveyor belt located below the outlet of the crushing station. The material drop height at this section is about 3.5 meters, and raw coal blocks with a particle size of more than 300 mm and a weight of more than 50 kg often fall, causing serious impact and wear to the belt.

[0055] On-site, a 1400 mm wide conveyor belt and Q235B steel beams were selected as the main support structure. Two sets of supporting steel components were symmetrically installed on the steel beams, with buffer running grooves machined at their ends. Buffer idlers with a diameter of 159 mm and a rubber surface covering thickness of no less than 30 mm, lined with a nylon reinforcement layer, were installed within the grooves. The buffer idlers were connected at both ends to top-side dampers with a rated stroke of 100 mm and a rated load of 5 kN via cross-links. Simultaneously, bottom dampers of the same specifications were installed at their bottoms. Both were embedded in the limiting and fixing grooves on both sides of the supporting steel components and the mounting groove at the bottom, respectively, forming a bidirectional energy absorption structure.

[0056] To further enhance impact resistance and recovery performance, 30 mm diameter sliding columns are installed between the supporting steel parts and connected to the end of the buffer roller shaft through U-shaped fasteners, connecting rods and sliding cylinders. A pair of recovery springs with a stiffness coefficient of 200 N / mm are installed between the sliding cylinders.

[0057] The supporting steel component has a triangular end structure, with a 60-degree angle on the side away from the idler roller and a 45-degree angle on the side closer to the idler roller to improve structural stability. An auxiliary limiting groove is also provided inside the buffer running trough, which cooperates with the limiting wing plate to ensure that the idler roller moves vertically without deviation. A 15mm thick wear-resistant rubber pad is adhered to the end of the groove. Side steel frames, extending 200mm higher than the supporting steel component, are installed at both ends of the cross steel beam. A set of inclined idler rollers is mounted on these frames, creating an approximately 20-degree upward slope at the edge of the belt, effectively guiding the material's landing point and preventing splashing.

[0058] After being put into operation, the system significantly reduced impact damage, the idler rollers returned to their original position quickly, and there was no jamming or uneven wear, thus extending the service life of the belt.

[0059] The working principle of this utility model:

[0060] Step 1: During normal operation of the belt body 1, its load-bearing section is supported by the buffer idler 2. At this time, the buffer idler 2 is suspended in the buffer running groove 203 of the supporting steel component 201 through the transverse connecting columns 204 at both ends and the bottom damper 202. The top damper 205 is in a slightly stretched or natural state, and the bottom damper 202 is in a compressed state. The two together share the static load of the buffer idler 2 and the belt and a small amount of material on it, maintaining the initial stability of the system.

[0061] Step 2: When a large piece of material falls from a height to the corresponding position on the belt, the huge impact force is transmitted to the buffer idler 2 through the belt. The impact force forces the buffer idler 2 to overcome the resistance of the bottom damper 202 and the top side damper 205 and move downward along the buffer running groove 203.

[0062] During this process, the bottom damper 202 is further compressed, its internal spring storing elastic potential energy, while hydraulic oil generates damping force through the small orifice, converting a large amount of impact kinetic energy into heat energy for dissipation. The top damper 205 is stretched, similarly absorbing and dissipating energy through its internal spring and damping medium. Through the linkage mechanism composed of the U-shaped fixing member 6, the connecting rod 601, the slide cylinder 602, and the return spring 603, the downward movement of the buffer roller 2 pushes the two slide cylinders 602 to slide towards each other along the slide column 604, compressing the return spring 603. The return spring 603 further absorbs the impact energy, serving as an effective supplement to the main damping system and preventing damage to the bottom damper 202 and the top damper 205 from instantaneous overload impacts.

[0063] At the same time, the thick rubber layer on the surface of the buffer roller 2 undergoes elastic deformation, further buffering local sharp impacts, expanding the contact area, and changing point and line contact into surface contact, which greatly reduces the pressure on the belt.

[0064] Step 3: After the main impact energy is absorbed, the damping force of the bottom damper 202 and the top side damper 205 effectively suppresses the residual vibration of the buffer roller 2 and the belt, preventing secondary impact or material splashing caused by multiple bounces.

[0065] When the impact force weakens or disappears, the compressed bottom damper 202 and the return spring 603 release their stored elastic potential energy, pushing the buffer roller 2 back to its original position. The stretched top damper 205 also contracts, assisting in lifting the buffer roller 2 and accelerating its return to its initial working position.

[0066] This bidirectional damping combined with a return spring design ensures that the system can return to its original position quickly and smoothly, preventing the damper from fatigue failure due to prolonged compression and guaranteeing continuous buffering performance.

[0067] Step 4: Simultaneously, the limiting wing plate 401 slides within the auxiliary limiting groove 4, ensuring that the buffer roller 2 moves only in the preset vertical direction, preventing it from tilting, jamming, or abnormally wearing against the groove wall due to uneven force. The rubber pad at the end of the buffer running groove 203 provides soft cushioning at extreme positions, protecting the roller end and the groove body. The structure of the triangular end 3 enhances the rigidity of the supporting steel 201, preventing it from deforming due to long-term stress. The sliding column 604 and the linkage mechanism ensure the synchronous movement of the bottom dampers 202 on both sides, preventing them from tilting outwards.

[0068] Step 5: The side steel frames 7 and inclined idlers 701 located on both sides of the device slightly lift both sides of the belt body 1, forming a shallow trough. This structure effectively prevents material from splashing off the belt or getting stuck between the belt and the frame during material drop, causing wear and tear. At the same time, the raised slope allows some material to fall onto the slope first and then slowly slide down to the middle of the belt, reducing the direct impact intensity of the material on the middle of the belt and the buffer idlers 2.

[0069] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0070] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wear and tear prevention device for mining conveyor belts, comprising a conveyor belt body (1) and a cross steel beam (101), characterized in that: Two opposing support steel members (201) are fixed on one side of the horizontal steel beam (101). A buffer running groove (203) is opened at one end of the support steel member (201). A buffer roller (2) is slidably connected to the inner wall of the buffer running groove (203). A horizontal connecting column (204) is fixed at both ends of the buffer roller (2). A top side damper (205) is fixed at the corresponding position at both ends of the horizontal connecting column (204). A bottom damper (202) is fixed at the corresponding position at both ends of the buffer roller (2). One end of the bottom damper (202) is fixed to the side of the horizontal steel beam (101) near the buffer roller (2).

2. The anti-wear and tearing device for mining conveyor belts according to claim 1, characterized in that: The supporting steel member (201) has an installation groove (5) on one side, and a bottom damper (202) is provided on the inner wall of the installation groove (5); the supporting steel member (201) has a limiting and fixing groove (501) on both sides, and a top side damper (205) is provided on the inner wall of the limiting and fixing groove (501).

3. The anti-wear and tearing device for mining conveyor belts according to claim 1, characterized in that: The end of the supporting steel member (201) near the buffer roller (2) is set as a triangular end (3), and the angle of the slope of the side of the triangular end (3) away from the buffer roller (2) is greater than the angle of the slope of the side of the triangular end (3) near the buffer roller (2).

4. The anti-wear and tear device for mining conveyor belts according to claim 1, characterized in that: The inner walls of the buffer running groove (203) are provided with auxiliary limiting grooves (4) on both sides. A limiting wing plate (401) is slidably connected to the inner wall of the auxiliary limiting groove (4). One end of the limiting wing plate (401) is fixed to one side of the end of the buffer roller (2).

5. The anti-wear and tear device for mining conveyor belts according to claim 4, characterized in that: The inner wall end of the buffer running groove (203) is set in an arc shape that matches the end of the buffer roller (2), and a rubber pad is glued to the inner wall end of the buffer running groove (203).

6. The anti-wear and tearing device for mining conveyor belts according to claim 1, characterized in that: The buffer roller (2) includes a shaft column, and a roller is rotatably connected to the circumference of the shaft column. The roller is covered with a rubber layer with a thickness of not less than three centimeters. A nylon layer is fixed on the inner circumference of the rubber layer and the nylon layer is located between the rubber layer and the roller.

7. The anti-wear and tear device for mining conveyor belts according to claim 1, characterized in that: A sliding column (604) is fixed to the side of each of the supporting steel parts (201); a U-shaped fixing part (6) is fixed at both ends of the shaft of the buffer roller (2); a rotating connecting rod (601) is rotatably connected to the end of the U-shaped fixing part (6) near the sliding column (604); a sliding cylinder (602) is rotatably connected to the end of the rotating connecting rod (601) near the sliding column (604); and a return spring (603) is fixed to the side of each of the sliding cylinders (602).

8. The anti-wear and tear device for mining conveyor belts according to claim 1, characterized in that: The horizontal steel beam (101) has side steel frames (7) distributed opposite to each other at both ends. One end of the side steel frame (7) is fixed to the surface of the horizontal steel beam (101). The height of the side steel frame (7) is higher than the height of the supporting steel member (201). A rotatable inclined roller (701) is provided between the side steel frame (7) and the supporting steel member (201).

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