Large pitch belt roller conveyor belt shock absorbing device

Abstract

The application provides a large-distance belt roller conveyor belt shockproof device, and relates to the field of conveyor belt shockproof devices.The device comprises a conveyor body and an electric telescopic rod installed on the ground, two fixed pegs are installed on the front and back surfaces of the conveyor body, an upper side of the fixed peg is provided with a hanging plate, an arc-shaped groove is formed on the lower side surface of the hanging plate, the arc-shaped groove is matched with the fixed peg, and the lower side surface of the hanging plate is fixedly connected with a vertical plate.The device has the function of adding an additional supporting roller between original large-distance belt rollers, the fixed pegs installed on the front and back surfaces of the conveyor are quickly clamped and positioned through the arc-shaped groove and the hanging plate, the adjusting groove on the vertical plate provides a lifting guide space for the L-shaped connecting plate, the supporting roller rotatably connected between the two L-shaped connecting plates serves as an additional supporting point, the span of the suspended section of the conveying belt is effectively reduced, the bending stress and vibration energy are reduced, and thus the problem of excessive vibration of the conveying belt under the full load state of the large-distance supporting roller is solved.

Description

Technical Field

[0001] This utility model relates to the field of vibration damping for conveyor belts, and more specifically, to a vibration damping device for a large-pitch belt roller conveyor. Background Technology

[0002] As the core equipment for continuous transportation of bulk materials, belt conveyors are widely used in industries such as mining, ports, metallurgy, and power. Idler rollers are key components that support the conveyor belt and materials. Their spacing design directly affects the operational stability, energy consumption level, and service life of the conveying system. In the design of long-distance, high-capacity belt conveyors, a larger idler roller spacing arrangement is often adopted to reduce equipment investment and maintenance costs.

[0003] However, excessively large idler spacing will cause a series of operational problems. First, the sag of the conveyor belt between the two idlers increases, leading to increased bending stress, uneven belt surface deformation, and a significant reduction in the conveyor belt's bending fatigue life. Studies have shown that when the idler spacing increases by 20%, the conveyor belt's bending fatigue life may decrease by 30% to 40%. Second, a larger idler spacing makes the conveyor belt more prone to vibration and swaying during operation, especially under full-load, high-speed operation. This instability is particularly pronounced, and vibration not only affects conveying efficiency but also causes continuous damage to the conveyor system structure. Under full load, the conveyor belt between large-spacing belt rollers lacks effective support, and vibration energy is transmitted longitudinally along the belt, leading to belt splices. The conveyor belt is subjected to repeated alternating loads, resulting in stress concentration. The contact friction between the belt body and the idler rollers intensifies, accelerating the wear rate. At the same time, vibration is transmitted to the frame through the belt, causing an increase in the frequency of loosening of the bolts of the frame connecting parts, requiring additional time for tightening and maintenance. The problem of material spillage caused by vibration is also prominent—the sagging and swaying of the conveyor belt reduces the trough shape retention capacity and the edge sealing becomes poor, making it easy for small materials to spill from the belt edge. Spilled material accumulates under the belt, and once it gets caught in the gap between the idler roller and the belt, it can easily cause "jamming" failure, posing a risk of equipment overload and shutdown. In addition, vibration also increases the probability of conveyor belt deviation, requiring frequent shutdowns for adjustment. In view of this, we propose a belt anti-vibration device for a large-pitch belt roller conveyor. Utility Model Content

[0004] The purpose of this invention is to solve the problem of vibration that occurs when large-pitch idlers are fully loaded.

[0005] To achieve the above-mentioned objectives and improve the aforementioned problems, this utility model provides a belt vibration damping device for a large-pitch belt roller conveyor, comprising a conveyor body installed on the ground and an electric telescopic rod. Two fixing bolts are installed on both the front and rear surfaces of the conveyor body. A hanging plate is provided on the upper side of each fixing bolt, and an arc-shaped groove is formed on the lower surface of the hanging plate, which fits into the fixing bolt. A vertical plate is fixedly connected to the lower surface of the hanging plate. An adjustment groove extending to the rear surface of the front surface of the vertical plate is formed. An L-shaped connecting plate is movably connected inside the adjustment groove. A roller is rotatably connected between the front and rear L-shaped connecting plates. A conical groove is formed on the lower surface of the horizontal plate of the L-shaped connecting plate, and a sliding groove is formed inside the L-shaped connecting plate. A stabilizing component is provided inside the sliding groove.

[0006] As a preferred technical solution of this application, the stabilizing component includes a first limiting plate, which is slidably connected inside the sliding groove. A first guide rod is fixedly connected to the first limiting plate, and the end of the first guide rod slides through to the outside of the L-shaped connecting plate.

[0007] As a preferred technical solution of this application, a stabilizing plate is fixedly connected to the end of the first guide rod, and a pulley is provided on the side surface of the stabilizing plate near the L-shaped connecting plate.

[0008] As a preferred technical solution of this application, the pulley contacts the vertical plate, a first spring is fixedly connected between the first limiting plate and the inner wall of the sliding groove, and a knob is provided on the lower surface of the vertical plate.

[0009] As a preferred technical solution of this application, the upper end of the knob is fixedly connected to an adjusting screw, and the upper end of the adjusting screw is threaded through the interior of the adjusting groove.

[0010] As a preferred technical solution of this application, a conical block is fixedly connected to the upper end of the adjusting screw, the conical block fits into the conical groove, and a second spring is fixedly connected to the upper surface of the hanging plate.

[0011] As a preferred technical solution of this application, the upper end of the second spring is fixedly connected to a second limiting plate, and the lower surface of the second limiting plate is fixedly connected to a second guide rod.

[0012] As a preferred technical solution of this application, the lower end of the second guide rod slides through into the interior of the adjustment groove, and a pressure plate is fixedly connected to the lower end of the second guide rod. A cleaning plate is fixedly connected to the telescopic end of the electric telescopic rod, and the upper surface of the cleaning plate is provided with bristles.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: In the scheme of this application: 1. By coordinating the structures such as the conveyor, fixing bolts, hanging plates, arc grooves, vertical plates, adjusting grooves, L-shaped connecting plates, and idlers, the function of adding additional support idlers between the original large-gap belt rollers is realized. The fixing bolts installed on the front and rear surfaces of the conveyor can be quickly engaged and positioned with the hanging plates through the arc grooves. The adjusting grooves on the vertical plates provide lifting and guiding space for the L-shaped connecting plates. The idlers that are rotatably connected between the front and rear L-shaped connecting plates serve as additional support points, effectively reducing the span of the conveyor belt overhang section, reducing bending stress and vibration energy, thereby solving the problem of excessive vibration of the conveyor belt under full load of large-gap idlers. 2. Through the coordination of structures such as knobs, adjusting screws, conical blocks, conical grooves, L-shaped connecting plates, idlers, stabilizing plates, pulleys, first springs, first limiting plates, first guide rods, sliding grooves, pressure plates, second springs, second limiting plates, and second guide rods, the system achieves precise height adjustment of the idlers and bidirectional stable operation. The knobs drive the adjusting screws to rotate and raise / lower, while the conical blocks and conical grooves work together to drive the L-shaped connecting plates and idlers to rise and fall smoothly, adapting to the support height requirements under different working conditions. At the same time, the first spring pulls the stabilizing plate through the first limiting plate and the first guide rod, causing the pulleys to continuously roll against the vertical plate, ensuring vertical stability of the lifting and lowering motion. The second spring pushes the pressure plate through the second limiting plate and the second guide rod to continuously press the upper side of the L-shaped connecting plate, forming a bidirectional limiting constraint with the conical blocks. This significantly improves the vibration resistance and positional accuracy of the L-shaped connecting plates and idlers during heavy-load operation, further enhancing the shock absorption effect. Attached Figure Description

[0014] Figure 1 A schematic diagram of the belt vibration damping device for the large-pitch belt roller conveyor provided in this application; Figure 2 A schematic diagram of the bottom structure of the conveyor body in the belt anti-vibration device for the large-pitch belt roller conveyor provided in this application; Figure 3 A schematic diagram of the conical block in the belt vibration damping device for the large-pitch belt roller conveyor provided in this application; Figure 4 This is a schematic diagram of the conical groove in the belt anti-vibration device for the large-pitch belt roller conveyor provided in this application.

[0015] The image shows: 1. Conveyor body; 2. Fixing bolt; 3. Hanging plate; 4. Arc groove; 5. Vertical plate; 6. Adjusting groove; 7. L-shaped connecting plate; 8. Idler roller; 9. Conical slot; 10. Sliding groove; 11. First limiting plate; 12. First guide rod; 13. Stabilizing plate; 14. Pulley; 15. First spring; 16. Knob; 17. Adjusting screw; 18. Conical block; 19. Second spring; 20. Second limiting plate; 21. Second guide rod; 22. Pressure plate; 23. Electric telescopic rod; 24. Cleaning plate. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 should fall within the protection scope of the present invention.

[0017] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0018] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] Example 1 Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A belt vibration damping device for a large-pitch belt roller conveyor includes a conveyor body 1 installed on the ground and an electric telescopic rod 23. Two fixing bolts 2 are installed on both the front and rear surfaces of the conveyor body 1 for fixing purposes. A hanging plate 3 is provided on the upper side of the fixing bolt 2, and an arc-shaped groove 4 for engaging the fixing bolt 2 is opened on the lower surface of the hanging plate 3. The arc-shaped groove 4 fits into the fixing bolt 2. A vertical plate 5 is fixedly connected to the lower surface of the hanging plate 3. An adjustment groove 6 extending to the rear surface of the vertical plate 5 provides adjustment space. An L-shaped connecting plate 7 for component installation is movably connected inside the adjustment groove 6. A roller 8 for supporting the belt is rotatably connected between the front and rear L-shaped connecting plates 7. A conical groove 9 is opened on the lower surface of the horizontal plate of the L-shaped connecting plate 7, and a sliding groove 10 is opened inside the L-shaped connecting plate 7. A stabilizing component is provided inside the sliding groove 10.

[0021] By installing additional idler rollers 8, the gap between the belt rollers of the conveyor body 1 is reduced, thereby reducing vibration under full load. During installation, the fixing bolts 2 are driven into the side of the conveyor body 1, and then the hanging plate 3 is placed on the fixing bolts 2 and the arc groove 4 is aligned with the fixing bolts 2. The existence of the adjustment groove 6 provides space for adjusting the vertical height of the idler rollers 8.

[0022] Example 2 The belt vibration damping device for the large-pitch belt roller conveyor provided in Example 1 has been further optimized, specifically, as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the stabilizing assembly includes a first limiting plate 11, which is slidably connected inside the sliding groove 10. A first guide rod 12, which serves as a guide, is fixedly connected to the first limiting plate 11. The end of the first guide rod 12 slides through to the outside of the L-shaped connecting plate 7. A stabilizing plate 13 is fixedly connected to the end of the first guide rod 12. A pulley 14 for reducing motion friction is provided on the surface of the stabilizing plate 13 near the L-shaped connecting plate 7. The pulley 14 contacts the vertical plate 5. A first spring 15 is fixedly connected between the first limiting plate 11 and the inner wall of the sliding groove 10. A knob 16 is provided on the lower surface of the vertical plate 5. An adjustment knob 16 is fixedly connected to the upper end of the knob 16. The upper end of the adjusting screw 17 is threaded through the interior of the adjusting groove 6. A conical block 18 for stabilization is fixedly connected to the upper end of the adjusting screw 17. The conical block 18 fits into the conical groove 9. A second spring 19 is fixedly connected to the upper surface of the hanging plate 3. A second limiting plate 20 is fixedly connected to the upper end of the second spring 19. A second guide rod 21 is fixedly connected to the lower surface of the second limiting plate 20. The lower end of the second guide rod 21 slides through the interior of the adjusting groove 6. A pressure plate 22 is fixedly connected to the lower end of the second guide rod 21. A cleaning plate 24 is fixedly connected to the telescopic end of the electric telescopic rod 23. The upper surface of the cleaning plate 24 is provided with bristles.

[0023] Installation is achieved by rotating the L-shaped connecting plate 7 and the stabilizing plate 13 ninety degrees so that they pass through the adjusting groove 6 and then return to their original positions. When adjusting the height of the roller 8, only the knob 16 needs to be rotated to drive the adjusting screw 17 to rotate. When the adjusting screw 17 rotates, it will also move vertically because it is threadedly connected to the vertical plate 5. The vertical movement of the adjusting screw 17 will drive the conical block 18 to move. After the conical block 18 moves, it will drive the L-shaped connecting plate 7 to rise. During the rising process, the first spring 15 will pull the stabilizing plate 13 closer to the vertical plate 5, so that the pulley 14 contacts the vertical plate 5, reducing the vertical movement resistance. The conical groove 9, together with the conical block 18, can increase the stability during lifting. When the L-shaped connecting plate 7 rises, it will drive the pressure plate 22 to rise. When the pressure plate 22 rises, it will move through the second guide rod 21 and the second limit plate 20, thereby stretching the second spring 19, so that the pressure plate 22 always presses the L-shaped connecting plate 7, increasing its stability during lifting and operation.

[0024] The usage process of the belt anti-vibration device for large-pitch belt roller conveyors provided by this utility model is as follows: During installation, fixing bolts 2 are first driven into the front and rear surfaces of the conveyor body 1. Then, the hanging plate 3 is engaged with the fixing bolts 2 through the arc-shaped groove 4 on its lower surface, achieving quick positioning and installation of the hanging plate 3 on the side of the conveyor body 1. The vertical plate 5 is fixedly connected to the lower surface of the hanging plate 3, and the L-shaped connecting plate 7 is movably connected to the adjusting groove 6 on the front surface of the vertical plate 5. A roller 8 is rotatably connected between the two L-shaped connecting plates 7. This roller 8 serves as an additional support roller and is installed between the existing large-pitch belt rollers, effectively reducing the length of the conveyor belt overhang, thereby reducing the bending stress and vibration amplitude of the conveyor belt during full-load operation.

[0025] When the vertical height of the idler roller 8 needs to be adjusted according to the actual working conditions, the operator rotates the knob 16. The adjusting screw 17, which is fixedly connected to the upper end of the knob 16, rotates and moves up and down under the threaded engagement of the vertical plate 5. The conical block 18, which is fixedly connected to the upper end of the adjusting screw 17, moves up and down accordingly. The conical block 18 engages with the conical groove 9 opened on the lower surface of the horizontal plate of the L-shaped connecting plate 7. Through the engagement of the conical surfaces, the L-shaped connecting plate 7 is pushed up and down along the adjusting groove 6, thereby driving the idler roller 8 to adjust its height. This ensures that the upper surface of the idler roller 8 maintains appropriate contact with the lower surface of the conveyor belt, thus achieving effective support for the conveyor belt.

[0026] During the lifting and lowering process of the L-shaped connecting plate 7, the first limiting plate 11, which is slidably connected inside the sliding groove 10, is fixedly connected to the stabilizing plate 13 via the first guide rod 12. The first spring 15 is connected between the first limiting plate 11 and the inner wall of the sliding groove 10, continuously applying a pulling force close to the vertical plate 5 to the stabilizing plate 13. This ensures that the pulley 14 on the surface of the stabilizing plate 13 near the L-shaped connecting plate 7 is always in contact with the vertical plate 5 and rolls, reducing the frictional resistance of the lifting and lowering motion and ensuring the vertical stability of the L-shaped connecting plate 7 during movement. At the same time, the second spring 19, which is fixedly connected to the upper surface of the hanging plate 3, has its upper end connected to the second limiting plate 20, and its lower surface is fixedly connected to... The second guide rod 21 slides downwards and penetrates into the adjusting groove 6. The pressure plate 22, which is fixedly connected to its lower end, always presses against the upper surface of the L-shaped connecting plate 7. The elastic force of the second spring 19 is transmitted to the pressure plate 22 through the second limiting plate 20 and the second guide rod 21, so that the pressure plate 22 applies continuous downward pressure to the L-shaped connecting plate 7, forming a bidirectional constraint with the thrust of the cone block 18, further increasing the stability of the L-shaped connecting plate 7 in the working state. In addition, the telescopic end of the electric telescopic rod 23 is fixedly connected to the cleaning plate 24. The bristles on the upper surface of the cleaning plate 24 can clean the surface of the conveyor belt under the drive of the electric telescopic rod 23, preventing material adhesion and aggravating vibration.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; conversely, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A belt vibration damping device for a large-pitch belt roller conveyor, characterized in that, The device includes a transmission body (1) installed on the ground and an electric telescopic pole (23). Two fixing bolts (2) are installed on the front and rear surfaces of the transmission body (1). A hanging plate (3) is provided on the upper side of the fixing bolt (2). An arc groove (4) is opened on the lower surface of the hanging plate (3). The arc groove (4) fits with the fixing bolt (2). A vertical plate (5) is fixedly connected to the lower surface of the hanging plate (3). An adjustment groove (6) extending to the rear surface of the front surface of the vertical plate (5) is opened. An L-shaped connecting plate (7) is movably connected inside the adjustment groove (6). A roller (8) is rotatably connected between the front and rear L-shaped connecting plates (7). A conical slot (9) is opened on the lower surface of the horizontal plate of the L-shaped connecting plate (7). A sliding groove (10) is opened inside the L-shaped connecting plate (7). A stabilizing component is provided inside the sliding groove (10).

2. The belt vibration damping device for a large-pitch belt roller conveyor according to claim 1, characterized in that, The stabilizing component includes a first limiting plate (11), which is slidably connected inside the sliding groove (10). A first guide rod (12) is fixedly connected to the first limiting plate (11), and the end of the first guide rod (12) slides through to the outside of the L-shaped connecting plate (7).

3. The belt vibration damping device for a large-pitch belt roller conveyor according to claim 2, characterized in that, The end of the first guide rod (12) is fixedly connected to a stabilizing plate (13), and a pulley (14) is provided on the side surface of the stabilizing plate (13) near the L-shaped connecting plate (7).

4. The belt vibration damping device for a large-pitch belt roller conveyor according to claim 3, characterized in that, The pulley (14) contacts the vertical plate (5), and a first spring (15) is fixedly connected between the first limiting plate (11) and the inner wall of the sliding groove (10). A knob (16) is provided on the lower surface of the vertical plate (5).

5. The belt vibration damping device for a large-pitch belt roller conveyor according to claim 4, characterized in that, The upper end of the knob (16) is fixedly connected to an adjusting screw (17), and the upper end of the adjusting screw (17) is threaded through the interior of the adjusting groove (6).

6. The belt vibration damping device for a large-pitch belt roller conveyor according to claim 5, characterized in that, The upper end of the adjusting screw (17) is fixedly connected to a conical block (18), which fits into the conical groove (9). The upper surface of the hanging plate (3) is fixedly connected to a second spring (19).

7. A belt vibration damping device for a large-pitch belt roller conveyor according to claim 6, characterized in that, The upper end of the second spring (19) is fixedly connected to the second limiting plate (20), and the lower surface of the second limiting plate (20) is fixedly connected to the second guide rod (21).

8. The belt vibration damping device for a large-pitch belt roller conveyor according to claim 7, characterized in that, The lower end of the second guide rod (21) slides through the interior of the adjustment groove (6). The lower end of the second guide rod (21) is fixedly connected to a pressure plate (22). The telescopic end of the electric telescopic rod (23) is fixedly connected to a cleaning plate (24). The upper surface of the cleaning plate (24) is provided with bristles.

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