A dual-support multi-stage large-span belt conveyor

Abstract

This invention relates to the field of concrete belt conveying and discloses a dual-support multi-stage large-span belt conveyor, including a first conveyor frame, a second conveyor frame disposed on the side of the first conveyor frame, a support frame disposed on the second conveyor frame, a conveying roller disposed on the support frame, and a conveying bonding device disposed inside the conveying roller. This invention, through the first bonding component, mounting component, and second bonding component on the conveying bonding device, allows the isolation limiting ring and the external transmission ring outside the built-in rotating ring to generate slight displacement during rotation, without affecting the performance of the belt on the second conveyor frame. This prevents overheating caused by the small contact area of ​​the belt on the second conveyor frame after deformation, and also reduces wear on the belt on the second conveyor frame. The slight displacement of the multiple external transmission rings increases the contact area between the deformed belt on the second conveyor frame and the outside of the external transmission ring, reducing the problem of belt slippage during transportation.

Description

Technical Field

[0001] This invention relates to the field of concrete belt conveyor technology, and more specifically, to a dual-support, multi-stage, large-span belt conveyor. Background Technology

[0002] Concrete belt conveyors are specialized equipment used for the continuous transport of concrete, efficiently transporting concrete from the mixing point to the pouring point via belts. Dual-support multi-stage long-span belt conveyors adopt a multi-section articulated structure with intermediate support points, significantly extending the conveying distance of a single machine, overcoming the limitations of complex terrain, and are suitable for the long-distance, large-span concrete conveying needs in large-scale projects.

[0003] A patent application with publication number CN218402260U discloses a device for preventing belt deviation on the return belt of a concrete placing boom and a belt conveyor. The device includes a conveyor belt and guide rollers. Auxiliary belts are installed on both sides of the conveyor belt, and a side wheel is provided on each side of the guide rollers. The side wheels have an outwardly expanding frustum-shaped structure, and the auxiliary belts are attached to the surface of the side wheels. A first rotating component is rotatably installed on one of the side wheels. By providing elastic auxiliary belts on both sides of the conveyor belt and side wheels on both sides of the guide rollers, the cross-section of the conveyor belt has a concave structure. During the conveying process, the concrete can be more stably positioned within the conveyor belt, while also preventing water in the concrete from seeping to the sides and dripping between the conveyor belt and the guide rollers, thus achieving an anti-slip and anti-deviation effect. Furthermore, the inside of the conveyor belt is laid with sub-strips that magnetically attract the magnetic strips on the guide rollers to further ensure a stable connection between the conveyor belt and the guide rollers.

[0004] While the aforementioned device can prevent belt misalignment during use, the belt may stretch and elongate during transportation due to stress and concrete adhesion. This can lead to loose contact between the belt drive guide rollers, further increasing wear and causing the belt to vibrate and slip during transport, affecting feeding efficiency and causing the concrete to solidify easily. Summary of the Invention

[0005] This invention provides a dual-support multi-stage large-span belt conveyor, which solves the technical problems in related technologies where belts stretch and elongate during transportation due to stress conditions and concrete adhesion, resulting in poor contact between the belt and the drive guide roller, which increases wear, causes belt vibration and slippage during transportation, affects the efficiency of material feeding, and leads to easy solidification of concrete.

[0006] This invention provides a dual-support, multi-stage, large-span belt conveyor, comprising a first conveyor frame with a feeding box connected thereon, a second conveyor frame disposed on the side of the first conveyor frame, a support frame disposed on the second conveyor frame, and a conveyor roller disposed on the support frame. The conveyor roller drives the belt on the second conveyor frame for transmission. A conveyor bonding device is disposed inside the conveyor roller to increase the contact area between the conveyor roller and the belt. The conveyor bonding device includes a built-in rotating ring, an isolation limiting ring, an external transmission ring, a first bonding component, a mounting component, and a second bonding component. The first bonding component is fixedly mounted on the end of the conveyor roller, and a rotatable component is mounted on the first bonding component. The device includes an installation component. A second fitting component is rotatably mounted on the side of the installation component away from the first fitting component. An internal rotating ring is fixedly mounted on the outside of the installation component. Symmetrically arranged isolation limiting rings are rotatably mounted on both ends of the internal rotating ring. An external transmission ring is rotatably mounted on the outside of the isolation limiting ring. Conveying rollers are symmetrically arranged on both sides of the second conveyor frame. Multiple internal rotating rings, isolation limiting rings, and external transmission rings are installed between the two conveying rollers. The outside of the external transmission ring is connected to the belt on the second conveyor frame. The internal rotating ring and the external transmission ring are used to adapt to the deformation of the belt on the second conveyor frame and increase the contact area between the belt on the second conveyor frame and the external transmission ring.

[0007] As a further optimization of the present invention, a limiting groove is provided on the isolation limiting ring, and an impact device is slidably installed inside the limiting groove. The impact device is used to strike the external transmission ring to vibrate the concrete adhering to the belt of the second conveyor frame.

[0008] As a further optimization of the present invention, a plurality of power blocks arranged in a circular array are fixedly installed on the outer wall of the built-in rotating ring. The power blocks are provided with power grooves. The rotation of the built-in rotating ring drives the power blocks to rotate, so that the power grooves engage with the impact device.

[0009] As a further optimization of the present invention, the first bonding component includes a first U-shaped block fixedly installed at the end of the conveying roller, a first bonding block rotatably installed inside the first U-shaped block, a first telescopic rod fixedly installed on the side of the first bonding block away from the conveying roller, a second U-shaped block fixedly installed at the end of the first telescopic rod, a first spring provided on the outside of the first telescopic rod, and the second U-shaped block rotatably connected to the mounting component.

[0010] As a further optimization of the present invention, the mounting component includes a first connecting rod rotatably mounted on the outside of the second U-shaped block, with symmetrically arranged first connecting blocks fixedly mounted at both ends of the first connecting rod, and a first mounting block fixedly mounted on the outside of the first connecting block. The first connecting rod is symmetrically arranged about the first mounting block, and a second fitting member is rotatably mounted on the outside of the first connecting rod on the side away from the second U-shaped block. The second fitting member connects the plurality of the built-in rotating rings.

[0011] As a further optimization of the present invention, the second fitting component includes a third U-shaped block rotatably mounted at the center of the first connecting rod, a second telescopic rod fixedly mounted on the side of the third U-shaped block away from the second U-shaped block, a second spring provided on the outside of the second telescopic rod, and symmetrically arranged third U-shaped blocks fixedly mounted at both ends of the second telescopic rod, the third U-shaped blocks being rotatably connected to the next mounting component.

[0012] As a further optimization of the present invention, the impact device includes a limiting rod fixedly installed on the second conveyor frame. The end of the limiting rod slides inside the limiting groove. Limiting sliders are slidably installed inside the two limiting grooves. Telescopic components are fixedly installed on the side of the limiting sliders. The built-in rotating ring rotates to drive the telescopic components to extend and retract, thereby striking the inner wall of the external transmission ring.

[0013] As a further optimization of the present invention, the telescopic component includes a second connecting plate fixedly installed on the side of the limiting slider, a second slide rod slidably installed inside the second connecting plate, a first protrusion fixedly installed at the end of the second slide rod, a protruding slide rod fixedly installed at the end of the first protrusion, the protruding slide rod sliding inside the power slide groove, a fourth fixing rod symmetrically arranged fixedly installed on the side of the second connecting plate away from the built-in rotating ring, a second fixing plate fixedly installed at the end of the fourth fixing rod, the second slide rod sliding inside the second fixing plate, a third connecting plate fixedly installed outside the second slide rod, and a third spring fixedly installed on the side of the third connecting plate.

[0014] As a further optimization of the present invention, the distance between the outer wall of the built-in rotating ring and the second connecting plate is greater than the length of the second slide rod.

[0015] As a further optimization of the present invention, the distance between the multiple power blocks disposed on the outer wall of the built-in rotating ring is equal to the distance between the second slide rods.

[0016] The beneficial effects of this invention are as follows:

[0017] The present invention discloses a dual-support multi-stage large-span belt conveyor. Through the first bonding component, mounting component, and second bonding component on the conveying bonding device, slight displacement of the isolation limiting ring and the external transmission ring outside the built-in rotating ring occurs during rotation, without affecting the performance of the belt on the second conveyor frame. This prevents overheating caused by the small contact area after deformation of the belt on the second conveyor frame, and also reduces wear on the belt. Furthermore, the slight displacement of multiple external transmission rings increases the contact area between the deformed belt on the second conveyor frame and the outside of the external transmission ring, reducing slippage and vibration during transport, and improving belt lifespan and safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall shape of the device of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall device installation of the present invention;

[0020] Figure 3 This is a schematic diagram of the installation position of the bonding device of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the bonding and conveying device of the present invention;

[0022] Figure 5 This is a diagram showing the internal structure connection of the bonding device of the present invention;

[0023] Figure 6 This is a schematic diagram showing the connection between the first fitting component and the mounting component of the present invention;

[0024] Figure 7 This is a schematic diagram of the internal structure of the impact device of the present invention.

[0025] In the picture:

[0026] 1. First conveyor frame; 11. Feeding box; 12. Second conveyor frame; 13. Support frame; 14. Conveyor rollers; 15. Feeding box;

[0027] 2. Conveying and bonding device; 21. Built-in rotating ring; 211. Power block; 212. Power slide groove; 22. Isolation limiting ring; 221. Limiting slide groove; 23. External transmission ring; 24. First bonding component; 241. First U-shaped block; 242. First bonding block; 243. First telescopic rod; 244. First spring; 245. Second U-shaped block; 25. Mounting component; 251. First mounting block; 252. First connecting rod; 253. First connecting block; 26. Second bonding component; 261. Third U-shaped block; 262. Second telescopic rod; 263. Second spring;

[0028] 3. Impact device; 31. Limiting rod; 32. Telescopic component; 321. Second connecting plate; 322. Second sliding rod; 323. First protrusion; 324. Protruding sliding rod; 325. Second fixing plate; 326. Third connecting plate; 327. Fourth fixing rod; 328. Third spring; 33. Limiting slider. Detailed Implementation

[0029] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0030] like Figures 1 to 3 As shown in the figure, a dual-support multi-stage large-span belt conveyor according to an embodiment of the present invention includes a first conveyor frame 1, a feeding box 11 connected to the first conveyor frame 1, a second conveyor frame 12 arranged on the side of the first conveyor frame 1, a support frame 13 arranged on the second conveyor frame 12, a conveying roller 14 arranged on the support frame 13, the conveying roller 14 being used to drive the belt on the second conveyor frame 12 for transmission, and a conveying bonding device 2 arranged inside the conveying roller 14, the conveying bonding device 2 being used to increase the contact area between the conveying roller 14 and the belt;

[0031] like Figures 4 to 6 As shown, the conveying and bonding device 2 includes a built-in rotating ring 21, an isolation limiting ring 22, an external transmission ring 23, a first bonding component 24, a mounting component 25, and a second bonding component 26. The first bonding component 24 is fixedly mounted on the end of the conveying roller 14. The mounting component 25 is rotatably mounted on the first bonding component 24. The second bonding component 26 is rotatably mounted on the outside of the mounting component 25 on the side away from the first bonding component 24. The built-in rotating ring 21 is fixedly mounted on the outside of the mounting component 25. Symmetrically arranged isolation limiting rings are rotatably mounted on both ends of the built-in rotating ring 21. Ring 22, an external transmission ring 23 is rotatably mounted on the outside of the isolation limiting ring 22, and conveying rollers 14 are symmetrically arranged on both sides of the second conveying frame 12. Multiple built-in rotating rings 21, isolation limiting rings 22, and external transmission rings 23 are installed between the two conveying rollers 14. The outside of the external transmission ring 23 is connected to the belt on the second conveying frame 12. The built-in rotating rings 21 and the external transmission rings 23 are used to adapt to the deformation of the belt on the second conveying frame 12 and increase the contact area between the belt on the second conveying frame 12 and the external transmission rings 23.

[0032] It should be noted that, considering that when concrete is transported by the conveyor belt, the conveyor belt may deform due to uneven force and frictional heat. Therefore, after long-term operation, gaps will be generated between the conveyor belt and the external transmission ring 23, resulting in vibration during transportation. The following improvements are made to solve this problem.

[0033] First, the mixed concrete material is poured into the feeding box 11. Then, the first conveyor frame 1 is activated, which moves the concrete closer to the second conveyor frame 12. A feeding box 15 is fixedly installed on the top of the second conveyor frame 12. The concrete falls into the feeding box 15. Then, the second conveyor frame 12 is activated, moving away from the first conveyor frame 1, thus transporting the concrete material to the location where it needs to be poured. A belt is installed on the second conveyor frame 12. During use, the belt generates heat and uneven stress. If the conveyor rollers... The direct connection of the belt to the outside of the conveyor roller 14 can cause belt deformation and wear, resulting in belt vibration during transportation and causing concrete materials to fall off. To solve this problem, a first fitting member 24, a mounting member 25, and a second fitting member 26 are connected to the side of the conveyor roller 14. The mounting member 25 is externally connected to an internal rotating ring 21, and an isolation limiting ring 22 is provided on the outer edge of the internal rotating ring 21. An external transmission ring 23 is provided outside the isolation limiting ring 22. Therefore, under the action of the first fitting member 24 and the second fitting member 26, the external transmission ring 23 is allowed to move freely. The transmission ring 23 and the built-in rotating ring 21 are displaced, causing the outer wall of the outer transmission ring 23 to better conform to the shape of the belt on the second conveyor frame 12. This increases the contact area and prevents overheating, slippage, and vibration caused by insufficient contact area with the outer transmission ring 23 after deformation of the belt on the second conveyor frame 12. This improves transportation safety, reduces overheating, slippage, and vibration, and extends the belt's service life. This device uses the first bonding member 24, mounting member 25, and second bonding member 26 on the conveying bonding device 2 to ensure that the isolation limiting ring outside the built-in rotating ring 21 is properly positioned. When the external drive rings 22 and 23 rotate, they can produce slight deformation without affecting the performance of the belt on the second conveyor frame 12. This prevents the belt on the second conveyor frame 12 from overheating due to the small contact area after deformation, and also reduces the wear of the belt on the second conveyor frame 12. The slight displacement of the multiple external drive rings 23 increases the contact area between the deformed belt on the second conveyor frame 12 and the outside of the external drive rings 23, reducing the problem of the belt slipping during transportation, preventing belt vibration, and improving the service life and safety of the belt.

[0034] like Figures 4 to 5As shown, a limiting groove 221 is provided on the isolation limiting ring 22, and an impact device 3 is slidably installed inside the limiting groove 221. The impact device 3 is used to strike the external transmission ring 23 to vibrate the concrete adhering to the belt of the second conveyor frame 12.

[0035] It should be noted that a limiting groove 221 is provided on the isolation limiting ring 22, and an impact device 3 is slidably installed inside the limiting groove 221. The impact device 3 is connected to the second conveyor frame 12, thus placing the impact device 3 in a position such that... Figure 5 The position of the conveyor belt is such that the concrete adhering to the belt on the second conveyor frame 12 is vibrated during transportation, causing the adhering concrete to fall off and improving the cleanliness of subsequent concrete transportation.

[0036] like Figure 5 As shown, a plurality of power blocks 211 arranged in a circular array are fixedly installed on the outer wall of the built-in rotating ring 21. The power blocks 211 are provided with power grooves 212. The rotation of the built-in rotating ring 21 drives the power blocks 211 to rotate, so that the power grooves 212 engage with the impact device 3.

[0037] It should be noted that when the motor drives the conveyor roller 14 to rotate, it can also drive the first bonding component 24, the mounting component 25, and the second bonding component 26 to rotate. The mounting component 25 has an internal rotating ring 21 on its outside, and a power block 211 is provided on the outside of the internal rotating ring 21. Therefore, the power block 211 can be connected to the impact device 3, thereby driving the impact device 3 to extend and retract, which can strike the inner wall of the external transmission ring 23, thereby achieving the effect of vibrating the belt on the second conveyor frame 12. If the vibration device is directly installed, it may cause the vibration degree on the belt of the second conveyor frame 12 to increase when transporting concrete, thereby increasing the risk of concrete falling during transportation. Compared with directly setting the impact device 3, it can vibrate at a fixed point, with a small vibration amplitude, better effect, and higher safety.

[0038] like Figure 6 As shown, the first bonding component 24 includes a first U-shaped block 241 fixedly installed at the end of the conveyor roller 14, a first bonding block 242 rotatably installed inside the first U-shaped block 241, a first telescopic rod 243 fixedly installed on the side of the first bonding block 242 away from the conveyor roller 14, a second U-shaped block 245 fixedly installed at the end of the first telescopic rod 243, a first spring 244 provided on the outside of the first telescopic rod 243, and the second U-shaped block 245 rotatably connected to the mounting component 25.

[0039] It should be noted that the rotation of the conveyor roller 14 drives the first U-shaped block 241, the first bonding block 242, the first telescopic rod 243, and the second U-shaped block 245 to rotate. The second U-shaped block 245 can drive the mounting part 25 and the built-in rotating ring 21 to rotate. The first telescopic rod 243 can accommodate a small offset of the built-in rotating ring 21 without affecting the effect of the other built-in rotating rings 21, thereby improving the safety of belt transportation and reducing the problem of vibration.

[0040] like Figure 6 As shown, the mounting component 25 includes a first connecting rod 252 rotatably mounted on the outside of the second U-shaped block 245. The two ends of the first connecting rod 252 are fixedly mounted with symmetrically arranged first connecting blocks 253. The outside of the first connecting blocks 253 is fixedly mounted with a first mounting block 251. The first connecting rod 252 is symmetrically arranged with respect to the first mounting block 251. A second fitting member 26 is rotatably mounted on the outside of the first connecting rod 252 on the side away from the second U-shaped block 245. The second fitting member 26 connects the plurality of built-in rotating rings 21.

[0041] It should be noted that the first mounting block 251 is provided with a first fitting member 24 and a second fitting member 26 on both sides. The conveyor roller 14 is connected to the mounting member 25 through the first fitting member 24, and multiple mounting members 25 are connected through the second fitting member 26. The second fitting member 26 can accommodate the displacement of multiple built-in rotating rings 21, so that multiple external transmission rings 23 contact the belt on the second conveyor frame 12, thereby increasing the contact area, reducing the problems of shaking and slippage, and improving the safety during use.

[0042] like Figure 6 As shown, the second fitting member 26 includes a third U-shaped block 261 rotatably mounted at the center of the first connecting rod 252. A second telescopic rod 262 is fixedly mounted on the side of the third U-shaped block 261 away from the second U-shaped block 245. A second spring 263 is provided on the outside of the second telescopic rod 262. The third U-shaped blocks 261 are symmetrically arranged and fixedly mounted at both ends of the second telescopic rod 262. The third U-shaped blocks 261 are rotatably connected to the next mounting member 25.

[0043] It should be noted that both ends of the second telescopic rod 262 are provided with a third U-shaped block 261, and the outside of the second telescopic rod 262 is provided with a second spring 263, so that the third U-shaped block 261 can adapt to the displacement of multiple built-in rotating rings 21, and can be reset by the second spring 263, so that the external transmission ring 23 can contact the belt on the second conveyor frame 12, increasing the contact area.

[0044] like Figures 4 to 5 ,like Figure 7As shown, the impact device 3 includes a limiting rod 31 fixedly installed on the second conveyor frame 12. The end of the limiting rod 31 slides inside the limiting groove 221. Limiting sliders 33 are slidably installed inside the two limiting grooves 221. Telescopic members 32 are fixedly installed on the side of the limiting sliders 33. The built-in rotating ring 21 rotates to drive the telescopic members 32 to extend and retract, thereby striking the inner wall of the external transmission ring 23.

[0045] It should be noted that since the limiting rod 31 is installed on the second conveyor frame 12, the position of the impact device 3 is fixed. When the two built-in rotating rings 21 produce a small displacement, the limiting slider 33 can slide inside the limiting groove 221, causing the two contacting isolation limiting rings 22 of the limiting groove 221 to produce relative displacement. The angle of the limiting slider 33 outside the conveyor roller 14 will not change. The motor drives the conveyor roller 14 to rotate, and the conveyor roller 14 drives the power block 211 outside the built-in rotating ring 21 to rotate. The power block 211 meshes with the telescopic member 32, thereby causing the telescopic member 32 to contract. This allows the telescopic member 32 to strike the inner wall of the external transmission ring 23, thereby achieving the effect of striking the belt on the second conveyor frame 12 outside the external transmission ring 23.

[0046] like Figures 5 to 7 As shown, the telescopic component 32 includes a second connecting plate 321 fixedly installed on the side of the limiting slider 33. A second slide rod 322 is slidably installed inside the second connecting plate 321. A first protrusion 323 is fixedly installed at the end of the second slide rod 322. A protruding slide rod 324 is fixedly installed at the end of the first protrusion 323. The protruding slide rod 324 slides inside the power slide groove 212. A fourth fixing rod 327 is symmetrically arranged fixedly installed on the side of the second connecting plate 321 away from the built-in rotating ring 21. A second fixing plate 325 is fixedly installed at the end of the fourth fixing rod 327. The second slide rod 322 slides inside the second fixing plate 325. A third connecting plate 326 is fixedly installed on the outside of the second slide rod 322. A third spring 328 is fixedly installed on the side of the third connecting plate 326.

[0047] It should be noted that when the power block 211 is not in contact with the protruding slide rod 324, the second slide rod 322 is in a state close to the inner wall of the outer transmission ring 23. When the inner rotating ring 21 rotates, it drives the power block 211 to rotate, causing the protruding slide rod 324 to contact the power slide groove 212. Then, the rotation of the power block 211 drives the protruding slide rod 324 to move closer to the center of the inner rotating ring 21, thereby driving the second slide rod 322 to move closer to the inner rotating ring 21. Until it rotates to a certain angle, the protruding slide rod 324 extends out from the upper part of the power slide groove 212, causing the second slide rod 322 to move quickly closer to the inner wall of the outer transmission ring 23 under the action of the third spring 328, thereby impacting the inner wall of the outer transmission ring 23, causing the outer transmission ring 23 and the belt outside the second conveyor frame 12 to vibrate, thereby vibrating the concrete adhering to the second conveyor frame 12.

[0048] like Figure 7 As shown, the distance between the outer wall of the built-in rotating ring 21 and the second connecting plate 321 is greater than the length of the second slide rod 322.

[0049] It should be noted that the distance between the outer wall of the built-in rotating ring 21 and the second connecting plate 321 is greater than the length of the second slide rod 322, so that under the action of the power block 211 and the power slide groove 212, the second slide rod 322 can move closer to the center of the built-in rotating ring 21 without being pushed up by the built-in rotating ring 21, thereby improving the safety of the device during operation.

[0050] like Figure 7 As shown, the distance between the multiple power blocks 211 arranged on the outer wall of the built-in rotating ring 21 is equal to the distance between the second slide rod 322.

[0051] It should be noted that the distance between the multiple power blocks 211 on the outer wall of the built-in rotating ring 21 is equal to the distance between the second slide rod 322, so that during the rotation of the built-in rotating ring 21, the multiple power blocks 211 on the outside of the built-in rotating ring 21 can slide inside the power slide groove 212, thereby driving the second slide rod 322 to move.

[0052] The embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of the embodiments described above, all of which are within the protection scope of the present invention.

Claims

1. A dual-support, multi-stage, large-span belt conveyor, comprising a first conveyor frame (1), characterized in that: A feeding box (11) is connected to the first conveyor frame (1). A second conveyor frame (12) is provided on the side of the first conveyor frame (1). A support frame (13) is provided on the second conveyor frame (12). A conveyor roller (14) is provided on the support frame (13). The conveyor roller (14) is used to drive the belt on the second conveyor frame (12) for transmission. A conveyor bonding device (2) is provided inside the conveyor roller (14). The conveyor bonding device (2) is used to increase the contact area between the conveyor roller (14) and the belt. The conveying and bonding device (2) includes a built-in rotating ring (21), an isolation limiting ring (22), an external transmission ring (23), a first bonding component (24), a mounting component (25), and a second bonding component (26). The first bonding component (24) is fixedly installed at the end of the conveying roller (14), and the mounting component (25) is rotatably installed on the first bonding component (24). The second bonding component (26) is rotatably installed on the outside of the mounting component (25) on the side away from the first bonding component (24). The built-in rotating ring (21) is fixedly installed on the outside of the mounting component (25), and the two ends of the built-in rotating ring (21) are symmetrically arranged isolation limiting rings rotatably installed on the outside. (22) An external transmission ring (23) is rotatably mounted on the outside of the isolation limiting ring (22). Conveying rollers (14) are symmetrically arranged on both sides of the second conveyor frame (12). Multiple built-in rotating rings (21), isolation limiting rings (22), and external transmission rings (23) are installed between the two conveying rollers (14). The outside of the external transmission ring (23) is connected to the belt on the second conveyor frame (12). The built-in rotating ring (21) and the external transmission ring (23) are used to adapt to the deformation of the belt on the second conveyor frame (12) and increase the contact area between the belt on the second conveyor frame (12) and the external transmission ring (23). The first bonding component (24) includes a first U-shaped block (241) fixedly installed at the end of the conveyor roller (14), a first bonding block (242) rotatably installed inside the first U-shaped block (241), a first telescopic rod (243) fixedly installed on the side of the first bonding block (242) away from the conveyor roller (14), a second U-shaped block (245) fixedly installed at the end of the first telescopic rod (243), a first spring (244) provided on the outside of the first telescopic rod (243), and the second U-shaped block (245) rotatably connected to the mounting component (25). The mounting component (25) includes a first connecting rod (252) rotatably mounted on the outside of the second U-shaped block (245). The two ends of the first connecting rod (252) are fixedly mounted with symmetrically arranged first connecting blocks (253). The outside of the first connecting blocks (253) is fixedly mounted with a first mounting block (251). The first connecting rod (252) is symmetrically arranged with respect to the first mounting block (251). A second fitting component (26) is rotatably mounted on the outside of the first connecting rod (252) on the side away from the second U-shaped block (245). The second fitting component (26) connects the plurality of built-in rotating rings (21). The second fitting component (26) includes a third U-shaped block (261) rotatably mounted at the center of the first connecting rod (252). A second telescopic rod (262) is fixedly mounted on the side of the third U-shaped block (261) away from the second U-shaped block (245). A second spring (263) is provided on the outside of the second telescopic rod (262). The third U-shaped blocks (261) are symmetrically arranged and fixedly mounted at both ends of the second telescopic rod (262). The third U-shaped block (261) is rotatably connected to the next mounting component (25).

2. The dual-support multi-stage large-span belt conveyor according to claim 1, characterized in that: The isolation limiting ring (22) has a limiting groove (221), and an impact device (3) is slidably installed inside the limiting groove (221). The impact device (3) is used to strike the external transmission ring (23) to vibrate the concrete adhering to the belt of the second conveyor frame (12).

3. A dual-support multi-stage large-span belt conveyor according to claim 2, characterized in that: The outer wall of the built-in rotating ring (21) is fixedly installed with a plurality of power blocks (211) arranged in a circular array. The power blocks (211) are provided with power grooves (212). The built-in rotating ring (21) rotates and drives the power blocks (211) to rotate, so that the power grooves (212) engage with the impact device (3).

4. A dual-support multi-stage large-span belt conveyor according to claim 3, characterized in that: The impact device (3) includes a limiting rod (31) fixedly installed on the second conveyor frame (12). The end of the limiting rod (31) slides inside the limiting groove (221). Limiting sliders (33) are slidably installed inside the two limiting grooves (221). A telescopic component (32) is fixedly installed on the side of the limiting slider (33). The built-in rotating ring (21) rotates to drive the telescopic component (32) to extend and retract, thereby striking the inner wall of the external transmission ring (23).

5. A dual-support multi-stage large-span belt conveyor according to claim 4, characterized in that: The telescopic component (32) includes a second connecting plate (321) fixedly installed on the side of the limiting slider (33). A second slide rod (322) is slidably installed inside the second connecting plate (321). A first protrusion (323) is fixedly installed at the end of the second slide rod (322). A protruding slide rod (324) is fixedly installed at the end of the first protrusion (323). The protruding slide rod (324) slides inside the power slide groove (212). A fourth fixing rod (327) is symmetrically installed on the side of the second connecting plate (321) away from the built-in rotating ring (21). A second fixing plate (325) is fixedly installed at the end of the fourth fixing rod (327). The second slide rod (322) slides inside the second fixing plate (325). A third connecting plate (326) is fixedly installed on the outside of the second slide rod (322). A third spring (328) is fixedly installed on the side of the third connecting plate (326).

6. A dual-support multi-stage large-span belt conveyor according to claim 5, characterized in that: The distance between the outer wall of the built-in rotating ring (21) and the second connecting plate (321) is greater than the length of the second slide bar (322).

7. A dual-support multi-stage large-span belt conveyor according to claim 6, characterized in that: The distance between the multiple power blocks (211) arranged on the outer wall of the built-in rotating ring (21) is equal to the distance between the second slide rods (322).

Images