A multi-section shrinking conveyor belt device

Abstract

The present invention provides a multi-section shrinking conveyor belt device, including a lower end belt support assembly and an upper end belt support assembly, the lower end belt support assembly includes a lower end first bracket, a lower end second bracket and a rotating bracket, the rotating bracket is rotatably connected to the lower end first bracket; a first telescopic cylinder is connected between the lower end first bracket and the lower end second bracket, and a second telescopic cylinder is installed between the lower end first bracket and the rotating bracket; the upper end belt support assembly includes an upper end belt support rod and an upper end belt end drive assembly, the upper end belt support assembly is rotatably connected to the lower end first bracket, and the rotating bracket is connected to the screening mechanical equipment, so that the device can be rotated along the hinge where the rotating bracket is connected to the screening mechanical equipment. The multi-section shrinking conveyor belt device of this device can realize the transformation of multiple angles and positions. The present invention solves the problem that the bottom material conveyor belt and the top material conveyor belt of the screening mechanical equipment are too close to each other, so that the materials discharged by the conveyor belts are mixed together.

Description

Technical Field

[0001] The present invention relates to the technical field of conveyor belts, in particular to a multi-section shrinking conveyor belt device. Background Art

[0002] In a mobile screening machine, the conveyor belt is in two different states during screening and movement. For example, Chinese patent CN 112718439 A discloses a crawler-type folding mobile screening station, comprising: a chassis, a frame with a first hydraulic cylinder, a vibrating screen with coarse and fine screens, a liftable feeder, a retractable coarse material belt, a receiving hopper, a hopper, a medium material belt mounted on the frame via a first articulated arm assembly, and a fine material belt mounted on the frame via a second articulated arm assembly. The mobile screening station utilizes a triple-folding articulated arm assembly to allow the medium and fine material belts on both sides to be significantly folded around the upper portion of the screening machine, reducing the device's pass-through area after folding.

[0003] However, the three-folding articulated arm assembly used in the crawler-type folding mobile screening station can only be folded along a fixed angle and direction, and the angle and position of the conveyor belt conveying materials relative to other conveyor belts cannot be adjusted. Therefore, it is not conducive to the phenomenon that the bottom material conveyor belt and the top material conveyor belt in multi-layer materials are too close to each other, causing the materials discharged by the conveyor belts to be mixed together. There is no rotating bracket to make the two conveyor belts at a certain angle, and the drop points cannot be further apart to meet the temporary pushing and releasing needs of the materials. Summary of the Invention

[0004] In order to solve the problem in the prior art that the folding conveyor belt cannot rotate relative to the screening machine chassis.

[0005] The technical solution of the present invention:

[0006] The cam is connected to the upper frame by the support frame, and the support frame is connected to the support frame by the support frame.

[0007] The upper belt support assembly includes an upper belt support rod and an upper belt end drive assembly, wherein the upper belt support rod is a long rod structure, and a plurality of second belt supports are installed on the upper belt support rod, and the second belt supports are arranged at intervals on the upper belt support rod; the upper belt end drive assembly is fixedly connected to the end of the upper belt support rod;

[0008] The upper end belt support rod of the upper end belt support assembly is rotatably connected to one end of the lower end first bracket away from the upper end belt terminal driving assembly, so that the lower end belt support assembly can rotate relative to the upper end belt support assembly, thereby changing the structural state of the device, that is, the lower end belt support assembly and the upper end belt support assembly are relatively vertical or in the same direct state. A third telescopic cylinder is connected between the upper end belt support rod and the lower end first bracket to drive the upper end belt support rod to rotate relative to the lower end first bracket, thereby driving the lower end belt support assembly to rotate relative to the upper belt support assembly. At the same time, the device can be provided with a locking assembly to lock the position of the lower end belt support assembly relative to the upper belt support assembly. The device is then combined with the conveyor belt to connect the conveyor belt to the device, and the device can be used to transmit materials.

[0009] Furthermore, the present invention provides a multi-section retractable conveyor belt device. In order to improve the structural strength of the device and ensure the stability of the device during operation, a flip support rod is installed between the first bracket at the lower end and the rotating bracket. The flip support rod is close to the second telescopic cylinder and parallel to the second telescopic cylinder.

[0010] Furthermore, the present invention provides a multi-section retractable conveyor belt device. In order to further improve the structural strength of the device and better ensure the stability of the device, the flip support rods installed between the first lower end bracket and the rotating bracket include two, and the second telescopic cylinders installed between the first lower end bracket and the rotating bracket include two. The two flip support rods are respectively close to the two sides of the rotating bracket, and the two second telescopic cylinders are respectively close to the two sides of the rotating bracket.

[0011] Furthermore, the present invention provides a multi-section retractable conveyor belt device. To ensure that the device can better receive and convey materials and improve the high efficiency performance of the device for conveying materials, a first baffle is installed on the upper end of the second bracket at the lower end. The first baffle encloses the three side edges of the upper end of the second bracket at the lower end, and the other unenclosed side edge is the end on the same side as the first bracket at the lower end.

[0012] Furthermore, the present invention provides a multi-section contraction conveyor belt device. To further ensure that the device can better receive and convey materials, and at the same time ensure that the movement of the lower end first bracket relative to the lower end second bracket does not affect the lower end belt support assembly in receiving materials from the screening machine, a second baffle is fixedly installed on the lower end first bracket. The second baffle is a plate-shaped structure and is respectively located on both sides of the upper end of the lower end first bracket. The second baffle is parallel to the first baffles on the two side edges of the upper end of the second bracket and abuts against each other.

[0013] Furthermore, the present invention provides a multi-section retractable conveyor belt device. In order to better ensure the supporting effect of the lower end belt support assembly on the conveyor belt, a first belt support is installed on the lower end first bracket to support the conveyor belt. The first belt support is close to one end of the lower end first bracket and the upper end belt support rod transfer connection.

[0014] Furthermore, the present invention provides a multi-section shrinking conveyor belt device. To ensure the reliability of the upper belt end drive assembly, the upper belt end drive assembly includes an upper belt frame, a belt drive roller and a belt driver. The upper belt frame is a frame structure and one end is connected to the upper belt support rod. The belt drive roller is rotatably connected to the end of the upper belt frame away from the upper belt support rod. The belt driver and the belt drive roller are used to drive the rotation of the belt drive roller.

[0015] Furthermore, the present invention provides a multi-section retractable conveyor belt device. In order to enable the conveyor belt to be driven more stably on the upper belt end drive assembly, the upper belt end drive assembly also includes an upper belt guide. The upper belt guide is a plate-shaped structure and is fixedly connected to the upper belt frame. One end of the upper belt guide is close to the belt drive roller.

[0016] Furthermore, the present invention provides a multi-section retractable conveyor belt device. In order to enable the device to have a better protective effect on the conveyor belt, an upper belt enclosure is installed on the upper belt support rod. The upper belt enclosure is a frame-shaped structure. The upper belt enclosure is installed at the same position as the second belt support and the second belt support is located on the inner side of the upper belt enclosure.

[0017] Furthermore, the present invention provides a multi-section retractable conveyor belt device. In order to further ensure the stability of the operation of the device, a lower belt enclosure is installed on the upper belt support rod, and the lower belt enclosure and the second belt support are respectively installed on both sides of the upper belt support rod.

[0018] Beneficial effects of the present invention:

[0019] The present invention provides a multi-section shrinking conveyor belt device by providing a lower-end belt support assembly and an upper-end belt support assembly, wherein the lower-end belt support assembly includes a first bracket at the lower end, a second bracket at the lower end and a rotating bracket, the first bracket at the lower end and the second bracket at the lower end are slidably connected to form a return structure, and the rotating bracket is rotatably connected to the lower-end first bracket; a first telescopic cylinder is connected between the lower-end first bracket and the lower-end second bracket, and a second telescopic cylinder is installed between the lower-end first bracket and the rotating bracket; the upper-end belt support assembly includes an upper-end belt support rod and an upper-end belt end driving assembly, the upper-end belt support assembly is rotatably connected to the lower-end first bracket, and a third telescopic cylinder is connected between the upper-end belt support rod and the lower-end first bracket. This device is then combined with a conveyor belt to sleeve the conveyor belt on this device, and this device can be used to transmit materials. The device is connected to the screening machinery through a rotating bracket, so that the conveyor belt device can rotate along the hinge where the rotating bracket and the screening machinery are connected. At the same time, the first bracket at the lower end can rotate relative to the rotating bracket and the upper belt support rod can rotate relative to the first bracket at the lower end, so that the multi-section retractable conveyor belt device of the device can achieve a variety of angle and position changes. Furthermore, the present invention solves the problem that the bottom material conveyor belt and the top material conveyor belt of the screening machinery are too close to each other, causing the materials discharged by the conveyor belts to mix together. By rotating the bracket, the two conveyor belts are made to be at a certain angle, so that the drop points are further apart to meet the temporary pushing and placing needs of the materials. In the transport state, the rotating bracket collects the material and is parallel to the frame. Then, the hydraulic cylinder is used to make the lower belt assembly 90 degrees to the ground, and the lower belt support assembly and the upper belt support assembly are 90 degrees to each other. This solves the problem that the conveyor belt is rigidly fixed and the lower belt support assembly and the upper belt support assembly cannot collect the material in the working state on the frame, and solves the problem that the whole machine is too wide during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front structure of a multi-section retractable conveyor belt device of the present invention when it is unfolded;

[0021] Figure 2 This is a schematic diagram of the upper front structure of a multi-section retractable conveyor belt device of the present invention when it is unfolded;

[0022] Figure 3 This is a side view of a multi-section retractable conveyor belt device of the present invention when it is unfolded;

[0023] Figure 4 This is a schematic diagram of the bottom structure of a multi-section retractable conveyor belt device of the present invention when it is unfolded;

[0024] Figure 5 This is a schematic diagram of the exploded structure of a multi-section shrinking conveyor belt device of the present invention;

[0025] Figure 6This is a schematic structural diagram of a multi-section shrinking conveyor belt device of the present invention when bent;

[0026] Figure 7 This is a schematic diagram of the side structure of a multi-section shrinking conveyor belt device of the present invention when it is bent;

[0027] Figure 8 This is a schematic diagram of the upper structure of a multi-section shrinking conveyor belt device of the present invention when it is bent;

[0028] Figure 9 This is a schematic diagram of the bottom structure of a multi-section shrinking conveyor belt device of the present invention when it is bent;

[0029] Names and serial numbers in the figure: 11. First bracket at the lower end; 12. Second bracket at the lower end; 13. First telescopic cylinder; 14. Rotating bracket; 15. Flip support rod; 16. Second telescopic cylinder; 17. First baffle; 18. Second baffle; 19. First belt support; 21. Upper belt support rod; 22. Second belt support; 23. Upper belt enclosure; 24. Upper belt frame; 25. Upper belt guide; 26. Belt drive roller; 27. Belt drive; 28. Lower belt enclosure; 3. Third telescopic cylinder; 4. Locking assembly. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0031] like Figures 1 to 5As shown, the present invention provides a multi-section contraction conveyor belt device, including a lower end belt support assembly and an upper end belt support assembly, the lower end belt support assembly and the upper end belt support assembly are two parts of the device, and these two components are used to support and install the conveyor belt for conveying materials; the lower end belt support assembly includes a lower end first bracket 11, a lower end second bracket 12 and a rotating bracket 14, the lower end first bracket 11 is a U-shaped frame structure, the lower end second bracket 12 is a U-shaped frame structure, and the rotating bracket 14 is a U-shaped frame structure used to connect the device with a screening machine or other mechanical equipment and enable the device to rotate along the rotating bracket 14 relative to the screening mechanical equipment body. If the device is installed on a screening machine through the rotating bracket 14 for outputting screened materials, the device can be rotated along the rotating bracket 14 relative to the screening mechanical body bracket, thereby adjusting the material conveying angle and position of the conveyor belt. The first bracket 11 at the lower end and the second bracket 12 at the lower end are slidably connected to form a circular structure, and the U-shaped ends of the rotating bracket 14 are rotatably connected to the U-shaped ends of the U-shaped frame structure of the lower first bracket 11; a first telescopic cylinder 13 is connected between the lower first bracket 11 and the lower second bracket 12 for driving the lower first bracket 11 to slide relative to the lower second bracket 12, that is, the lower first bracket 11 slides relative to the lower second bracket 12 to change the shape of the circular structure formed between the lower first bracket 11 and the lower second bracket 12, and a second telescopic cylinder 16 is installed between the lower first bracket 11 and the rotating bracket 14 for driving the lower first bracket 11 to rotate relative to the rotating bracket 14 to facilitate adjustment of the position between the lower first bracket 11 and the lower second bracket 12.

[0032] The upper belt support assembly includes an upper belt support rod 21 and an upper belt end drive assembly. The upper belt support rod 21 is a long rod structure. A plurality of second belt supports 22 are installed on the upper belt support rod 21 to support the conveyor belt. The second belt supports 22 are arranged at intervals on the upper belt support rod 21 to ensure that the conveyor belt can work stably and reliably when transporting materials; the upper belt end drive assembly is fixedly connected to the end of the upper belt support rod 21, wherein the upper belt end drive assembly is used to drive the movement of the conveyor belt installed on this device.

[0033] The upper belt support rod 21 of the upper belt support assembly is rotatably connected to one end away from the upper belt terminal drive assembly and one end away from the lower second bracket 12 of the lower first bracket 11, so that the lower belt support assembly can rotate relative to the upper belt support assembly, thereby changing the structural state of the device, that is, the lower belt support assembly and the upper belt support assembly are relatively vertical or in the same direct position. A third telescopic cylinder 3 is connected between the upper belt support rod 21 and the lower first bracket 11, which is used to drive the upper belt support rod 21 to rotate relative to the lower first bracket 11, thereby driving the lower belt support assembly to rotate relative to the upper belt support assembly. At the same time, the device can be provided with a locking assembly 4 to lock the position of the lower belt support assembly relative to the upper belt support assembly. The device is then combined with a conveyor belt, that is, the conveyor belt is sleeved on the device, and the device can be used to transport materials. That is, Figures 1 to 4 The upper belt support rod 21 of the device is connected to the lower first bracket 11 in a straight line, that is, the device is in working state at this time. If a conveyor belt is installed on the device, the device can stably transport materials. Figures 1 to 4 As shown in the figure, it can be seen that the angle of the first bracket 11 at the lower end relative to the rotating bracket 14 is adjusted by the second telescopic cylinder 16 to achieve the angle of the material after the conveyor belt is installed on the device. Figures 6 to 9 The figure shows the state in which the upper belt support rod 21 of the device is connected to the lower first bracket 11 at a certain angle. At this time, the multi-section shrinking conveyor belt device of the device is in a shrinking and folding state. That is, when the device is installed on a mobile screening station, the length of the device can be extremely reduced when the device is in this folding and shrinking state, thereby reducing the volume of the mobile screening station and facilitating its movement.

[0034] In specific practical applications, when this device is applied to a screening machine, the multi-section retractable conveyor belt device of the screening machine is divided into two sections, an upper section and a lower section. In the working state, the two sections are straight, the angle between the belt and the ground plane is 18 degrees, and the angle between the side of the belt and the side plate of the screening machine frame is 53 degrees. In the transport state, the lower section of the main belt is 90 degrees to the ground, and the angle between the upper section and the lower section is 90 degrees. The conveyor belt and the screening machine frame are connected by a rotating bracket 14. When the rotating bracket 14 is parallel to the frame, it is in the transport state, and when the rotating bracket 14 is rotated 53 degrees, it is in the working state. This invention solves the problem that the bottom material conveyor belt and the top material conveyor belt of the screening machine are too close, causing the materials discharged from the conveyor belts to mix together. By rotating the bracket 14, the two conveyor belts are made to have a certain angle, so that the drop points are farther apart to meet the temporary pushing and dropping needs of the materials. In the transport state, the rotating bracket 14 retracts the material and is parallel to the frame. The hydraulic cylinder then makes the lower section of the conveyor 90 degrees to the ground, and the upper section and the lower section 90 degrees. This solves the problem that the upper section cannot retract the material when the conveyor belt is rigidly fixed and working on the frame, and solves the problem of the entire machine being too wide for transportation.

[0035] like Figures 1 to 9 As shown, further, the present invention relates to a multi-section retractable conveyor belt device. To improve the structural strength of the device and ensure the stability of the device during operation, a flip support rod 15 is installed between the lower first bracket 11 and the rotating bracket 14. The flip support rod 15 is close to and parallel to the second telescopic cylinder 16. In other words, the provision of the flip support rod 15 can reduce the swing of the rotating bracket 14 when it rotates relative to the lower first bracket 11, thereby preventing the rotating bracket 14 from deforming and becoming abnormally positioned relative to the lower first bracket 11. Furthermore, to further improve the structural strength of the device and better ensure the stability of the device, two flip support rods 15 are installed between the lower first bracket 11 and the rotating bracket 14, and two second telescopic cylinders 16 are installed between the lower first bracket 11 and the rotating bracket 14. The two flip support rods 15 are respectively close to either side of the rotating bracket 14, and the two second telescopic cylinders 16 are respectively close to either side of the rotating bracket 14. That is, as shown in the figure, two flip support rods 15 and a second telescopic cylinder 16 are provided to form a parallel and stable structure, thereby ensuring the structural stability and strength of the device.

[0036] Further, such as Figures 1 to 9 As shown, the present invention relates to a multi-section retractable conveyor belt device. To ensure that the device can better receive and convey materials and improve the device's efficient material conveying performance, a first baffle 17 is installed on the upper end of the lower second bracket 12. The first baffle 17 encloses three sides of the upper end of the lower second bracket 12, and the other unenclosed side is the end on the same side as the lower first bracket 11. The provision of the first baffle 17 allows the conveyor belt end located at the lower second bracket 12 to more completely receive materials when receiving them, thereby improving the device's material conveying efficiency. Furthermore, to further ensure that the device can better receive and convey materials, and at the same time ensure that the movement of the lower first bracket 11 relative to the lower second bracket 12 does not affect the lower belt support assembly receiving materials from the screening machine, a second baffle 18 is fixedly mounted on the lower first bracket 11. The second baffle 18 is a plate-shaped structure and is located on both sides of the upper end of the lower first bracket 11. The second baffle 18 is parallel to and abuts against the first baffles 17 on both sides of the upper end of the second bracket. That is, since the lower first bracket 11 can move relative to the lower second bracket 12, when the lower first bracket 11 moves relative to the lower second bracket 12, the second baffle 18 provided on the upper end of the lower first bracket 11 can effectively prevent the conveyor belt located at the lower first bracket 11 from receiving and conveying materials after the lower first bracket 11 moves relative to the lower second bracket 12.

[0037] Further, such as Figures 1 to 5 As shown, the present invention relates to a multi-section retractable conveyor belt device. To better ensure the support effect of the lower belt support assembly on the conveyor belt, a first belt support 19 is installed on the lower first bracket 11 to support the conveyor belt. The first belt support 19 is close to the end of the lower first bracket 11 that is connected to the upper belt support rod 21. In other words, after the conveyor belt is installed on the device, the first belt support 19 can be installed on the lower first bracket 11 to better support the conveyor belt on the lower first bracket 11, thereby increasing the life of the conveyor belt.

[0038] like Figures 1 to 9 As shown, the present invention further provides a multi-section retractable conveyor belt device. To ensure the reliability of the upper belt end drive assembly, the upper belt end drive assembly includes an upper belt frame 24, a belt drive roller 26, and a belt driver 27. The upper belt frame 24 is a frame structure, one end of which is connected to the upper belt support rod 21. The belt drive roller 26 is rotatably connected to the end of the upper belt frame 24 that is away from the upper belt support rod 21. The belt driver 27 and the belt drive roller 26 are used to drive the rotation of the belt drive roller 26. Specifically, the belt driver 27 can be hydraulically driven. To ensure more stable drive of the conveyor belt on the upper belt end drive assembly, the upper belt end drive assembly also includes an upper belt guide plate 25. The upper belt guide plate 25 is a plate-shaped structure and is fixedly connected to the upper belt frame 24. One end of the upper belt guide plate 25 is close to the belt drive roller 26. That is, as shown in the figure, the upper belt layer is provided with a deformable structure so that the conveyor belt can be better deformed here, thereby extending the service life of the belt and improving the stability of material transportation here.

[0039] like Figures 1 to 9 As shown, the present invention further relates to a multi-section retractable conveyor belt device. To ensure that the device can provide better protection for the conveyor belt, an upper belt enclosure 23 is installed on the upper belt support rod 21. The upper belt enclosure 23 has a frame-shaped structure. The upper belt enclosure 23 and the second belt support 22 are installed at the same position, and the second belt support 22 is located inside the upper belt enclosure 23. Furthermore, to further ensure the stability of the operation of the device, a lower belt enclosure 28 is installed on the upper belt support rod 21. The lower belt enclosure 28 and the second belt support 22 are respectively installed on both sides of the upper belt support rod 21. That is, by providing the upper belt enclosure 23 and the lower belt enclosure 28, the conveyor belt of the device can be better protected, thereby preventing the conveyor belt from being changed when the device changes to different working states, thereby further improving the overall service life of the device.

[0040] This article uses specific embodiments to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method of the present invention and its core ideas. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. A multi-section shrink conveyor belt device, characterized in that: include: A lower end belt support assembly, the lower end belt support assembly comprises a lower end first bracket (11), a lower end second bracket (12) and a rotating bracket (14), the lower end first bracket (11) is a U-shaped frame structure, the lower end second bracket (12) is a U-shaped frame structure, the rotating bracket (14) is a U-shaped frame structure, the lower end first bracket (11) and the lower end second bracket (12) are slidingly connected to form a return structure, the U-shaped ends of the rotating bracket (14) are rotatably connected to the U-shaped ends of the U-shaped frame structure of the lower end first bracket (11); a first telescopic cylinder (13) is connected between the lower end first bracket (11) and the lower end second bracket (12) for driving the lower end first bracket (11) to slide relative to the lower end second bracket (12), and a second telescopic cylinder (16) is installed between the lower end first bracket (11) and the rotating bracket (14) for driving the lower end first bracket (11) to rotate relative to the rotating bracket (14); An upper belt support assembly, the upper belt support assembly comprising an upper belt support rod (21) and an upper belt end drive assembly, the upper belt support rod (21) being a long rod-shaped structure, a plurality of second belt supports (22) being mounted on the upper belt support rod (21), the second belt supports (22) being arranged at intervals on the upper belt support rod (21); the upper belt end drive assembly being fixedly connected to the end of the upper belt support rod (21); An end of the upper belt support rod (21) of the upper belt support assembly away from the upper belt terminal drive assembly is rotatably connected to an end of the lower first bracket (11) away from the lower second bracket (12), and a third telescopic cylinder (3) is connected between the upper belt support rod (21) and the lower first bracket (11) for driving the upper belt support rod (21) to rotate relative to the lower first bracket (11).

2. A multi-section shrinking conveyor belt device according to claim 1, characterized in that: A flip support rod (15) is installed between the first lower end bracket (11) and the rotating bracket (14), and the flip support rod (15) is close to the second telescopic cylinder (16) and parallel to the second telescopic cylinder (16).

3. A multi-section shrink conveyor belt device according to claim 2, characterized in that: The flip support rods (15) installed between the first lower bracket (11) and the rotating bracket (14) include two, and the second telescopic cylinders (16) installed between the first lower bracket (11) and the rotating bracket (14) include two, the two flip support rods (15) respectively approaching both sides of the rotating bracket (14), and the two second telescopic cylinders (16) respectively approaching both sides of the rotating bracket (14).

4. A multi-section shrink conveyor belt device according to claim 1, characterized in that: A first baffle (17) is installed on the upper end of the lower second bracket (12), and the first baffle (17) surrounds three side edges of the upper end of the lower second bracket (12).

5. A multi-section shrink conveyor belt device according to claim 4, characterized in that: A second baffle (18) is fixedly mounted on the first bracket (11) at the lower end. The second baffle (18) is a plate-shaped structure and is located on both sides of the upper end of the first bracket (11) at the lower end. The second baffle (18) is parallel to and abuts against the first baffles (17) at two sides of the upper end of the second bracket.

6. A multi-section shrink conveyor belt device according to claim 5, characterized in that: A first belt support (19) is installed on the first lower bracket (11), and the first belt support (19) is close to one end of the first lower bracket (11) and the upper belt support rod (21) for transfer connection.

7. The multi-section shrink conveyor belt device according to claim 1, characterized in that: The upper belt end drive assembly comprises an upper belt frame (24), a belt drive roller (26) and a belt driver (27); the upper belt frame (24) is a frame structure and one end of the upper belt frame is connected to the upper belt support rod (21); the belt drive roller (26) is rotatably connected to the end of the upper belt frame (24) away from the upper belt support rod (21); the belt driver (27) and the belt drive roller (26) are used to drive the belt drive roller (26) to rotate.

8. A multi-section shrinking conveyor belt device according to claim 7, characterized in that: The upper belt end drive assembly further includes an upper belt guide plate (25), the upper belt guide plate (25) being a plate-shaped structure and fixedly connected to the upper belt frame (24), and one end of the upper belt guide plate (25) being close to the belt drive roller (26).

9. The multi-section shrinking conveyor belt device according to claim 1, characterized in that: An upper belt enclosure (23) is installed on the upper belt support rod (21), and the upper belt enclosure (23) is a frame-shaped structure. The upper belt enclosure (23) and the second belt support (22) are installed at the same position, and the second belt support (22) is located inside the upper belt enclosure (23).

10. The multi-section shrinking conveyor belt device according to claim 1, characterized in that: A lower belt enclosure (28) is installed on the upper belt support rod (21), and the lower belt enclosure (28) and the second belt support (22) are respectively installed on both sides of the upper belt support rod (21).

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