Annular belt conveyor and using method thereof

Abstract

The invention relates to the technical field of conveyors, in particular to an annular belt conveyor and a using method thereof.The annular belt conveyor comprises a frame body, a fixing plate is fixedly connected to the frame body, a plurality of rotating rollers arranged at equal intervals are rotationally connected to the fixing plate, and the rotating rollers are connected through an annular conveying belt; rectangular grooves are formed in one ends of the rotating rollers located on the two sides. A reciprocating screw rod is rotatably connected to the frame body, a fixed rod and an extrusion block are fixedly connected to the frame body, a movable block with an L-shaped cross section is in threaded connection to the reciprocating screw rod, the movable block is slidably connected with the fixed rod, a sliding assembly is arranged on the movable block, and the extrusion block is fixedly connected with the fixed rod. The sliding assembly comprises a sliding rod installed on the moving block in a sliding mode. The annular conveying belt can be conveniently and rapidly disassembled and replaced, operation is convenient and rapid, and use of the annular belt conveyor is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of conveyors, and in particular to an endless belt conveyor and a use method thereof. Background Art

[0002] With the continuous development of society and the continuous advancement of science and technology, conveyor-related technologies are also constantly improving. Ring belt conveyor is a material conveying equipment that uses belt as the main working mechanism. At present, ring belt conveyors are widely used, and they are often used to transport various different things.

[0003] The currently used ring belt conveyor will be seriously worn or aged after a long period of use. However, it is not convenient to quickly disassemble and replace the ring belt conveyor, and the operation is cumbersome and inconvenient, which is not conducive to the use of the ring belt conveyor. Summary of the invention

[0004] The purpose of the present invention is to solve the following shortcomings in the prior art: the currently used ring-shaped belt conveyor will show serious wear or aging after long-term use, but the ring-shaped belt conveyor is not convenient for quick disassembly and replacement of the ring-shaped belt conveyor, and the operation is relatively cumbersome and inconvenient, which is not conducive to the use of the ring-shaped belt conveyor. A ring-shaped belt conveyor and a method of using the same are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An endless belt conveyor, comprising a frame, a fixed plate fixedly connected to the frame, a plurality of rotating rollers equidistantly arranged are rotatably connected to the fixed plate, the plurality of rotating rollers are connected by an endless conveyor belt, and a rectangular groove is provided at one end of the rotating rollers on both sides;

[0007] The frame is rotatably connected to a reciprocating screw rod, the frame is fixedly connected to a fixed rod and an extrusion block, the reciprocating screw rod is threadedly connected to a moving block with an L-shaped cross section, the moving block and the fixed rod are slidably connected, a sliding assembly is provided on the moving block, the sliding assembly includes a sliding rod slidably mounted on the moving block, and the upper end of the sliding rod is fixedly connected to a mounting plate;

[0008] Two servo motors are fixedly connected to the mounting plate, and a driving end of each servo motor is fixedly connected to a fixed cylinder, a rectangular block is fixedly connected inside the fixed cylinder, a plurality of fixed rings are fixedly connected to the mounting plate, and the plurality of fixed rings are arranged between the two fixed cylinders, and a material guide frame is fixedly connected to the frame.

[0009] Preferably, the extrusion block is provided with an inclined surface and a plane, the slide rod is fixedly connected with a limiting ring, and the lower end of the slide rod is in contact with the plane.

[0010] Preferably, a bending rod is slidably connected to the frame, one end of the bending rod is clamped with a fixing sleeve, a scraper is fixedly connected to the fixing sleeve, a spring is sleeved on the bending rod, one end of the spring is fixedly connected to the bending rod, and the other end of the spring is fixedly connected to the frame.

[0011] Preferably, an installation frame is fixedly connected to the upper surface of the frame, a sliding opening is provided on the installation frame, a slider with an I-shaped cross-section is slidably connected in the sliding opening, the slider is connected to the fixed sleeve through a threaded rod, and a groove for connecting the threaded rod is provided on the bending rod.

[0012] Preferably, a blocking plate is clamped on one side of the frame, and an arc-shaped opening for connecting the bending rod is formed on the blocking plate.

[0013] Preferably, a debris removing plate is fixedly connected to the frame, the debris removing plate is arranged obliquely, and the debris removing plate is arranged below the scraper.

[0014] Preferably, a mounting groove is provided on a side of the frame away from the mounting frame, a bidirectional screw is rotatably connected in the mounting groove, two symmetrical mounting strips are threadedly connected to the bidirectional screw, one end of each mounting strip is slidably connected to the mounting groove, two first motors are fixedly connected to the frame, the driving ends of the two first motors are respectively fixedly connected to the reciprocating screw and the bidirectional screw, and a push plate is provided on one side of each mounting strip.

[0015] Preferably, each of the mounting bars is threadedly connected with an adjusting rod, the adjusting rod passes through one end of the mounting bar and is rotatably connected to the push plate, and the cross section of the adjusting rod is T-shaped.

[0016] Preferably, one side of each push plate is fixedly connected to a limit rod, and the limit rod is slidably connected to the mounting bar.

[0017] The method for using the endless belt conveyor comprises the following steps:

[0018] S1: When the ring conveyor belt is seriously worn or aged and needs to be disassembled and replaced, the first motor starts to work and drives the reciprocating screw to rotate, the moving block moves along the reciprocating screw, and the distance between the mounting plate and the fixed plate increases at the same time. The lower end surface of the sliding rod slides along the plane, and the two rectangular blocks gradually separate from the rectangular groove;

[0019] S2: When the rectangular block is separated from the rectangular groove, each fixed ring moves to the outside of the rotating roller. After the rectangular block is completely separated from the rectangular groove, the lower end surface of the slide bar gradually contacts the arc surface and the inclined surface under the action of gravity during the movement of the slide bar until the mounting plate is completely moved to the bottom of the rotating roller. At this time, the mounting plate and the circular conveyor belt are in a staggered state;

[0020] S3: Then, the circular conveyor belt is pulled outward to be pulled out from the multiple rotating rollers, so as to realize the disassembly of the damaged circular conveyor belt, and then a new circular conveyor belt is installed on the outside of the multiple rotating rollers. Finally, the first motor drives the reciprocating screw to rotate again, so that the moving block moves in the opposite direction along the reciprocating screw, so that the two rectangular blocks can be reconnected with the two rectangular grooves respectively.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The first motor works and drives the reciprocating screw to rotate. The distance between the mounting plate and the fixed plate increases at the same time. The lower end face of the slide bar will slide against the plane, and the two rectangular blocks will gradually separate from the rectangular groove. During the movement of the slide bar, its lower end face will gradually contact the arc surface and the inclined surface under the action of gravity. The mounting plate will be staggered with the ring conveyor belt. Then the ring conveyor belt can be pulled outward and pulled out from the multiple rotating rollers to realize the disassembly of the damaged ring conveyor belt. Similarly, the new ring conveyor belt can be installed on the outside of the multiple rotating rollers, which is convenient for the quick disassembly and replacement of the ring conveyor belt. The operation is relatively convenient and quick, which is conducive to the use of the ring belt conveyor.

[0023] 2. When the circular conveyor belt needs to be cleaned, first pull the bending rod away from the frame, then remove the blocking plate from the frame, and then remove the external force applied to the bending rod. Under the elastic force of the spring, the bending rod will slide relative to the frame until the surface of the scraper is in close contact with the surface of the circular conveyor belt. In the subsequent transmission process of the circular conveyor belt, it will move relative to the scraper. Under the blocking effect of the scraper, the impurities on the surface of the circular conveyor belt can be scraped off, so as to achieve rapid and automatic cleaning of the circular conveyor belt and facilitate the use of the circular belt conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front structural schematic diagram of an endless belt conveyor proposed by the present invention;

[0025] Figure 2 It is a right side structural schematic diagram of an endless belt conveyor proposed by the present invention;

[0026] Figure 3 A schematic diagram of the structure of an endless belt conveyor proposed by the present invention when viewed from above;

[0027] Figure 4 It is a left-side structural schematic diagram of an endless belt conveyor proposed by the present invention;

[0028] Figure 5 It is a schematic diagram of the partial internal structure of the rotating roller and the endless conveyor belt in the present invention;

[0029] Figure 6 for Figure 2 A is a schematic diagram of the partially enlarged structure of the middle part;

[0030] Figure 7 for Figure 4 Schematic diagram of the partially enlarged structure of B.

[0031] In the figure: 1 frame, 2 guide frame, 3 mounting bar, 4 limit rod, 5 adjusting rod, 6 mounting plate, 7 push plate, 8 slider, 9 bending rod, 10 impurity removal plate, 11 blocking plate, 12 extrusion block, 13 fixed rod, 14 reciprocating screw rod, 15 mounting frame, 16 rotating roller, 17 fixed plate, 18 limit ring, 19 moving block, 20 slide rod, 21 scraper, 22 bidirectional screw rod, 23 threaded rod, 24 rectangular block, 25 endless conveyor belt, 26 fixed ring, 27 fixed cylinder, 28 fixed sleeve, 29 spring. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Reference Figure 1-Figure 7 A ring-shaped belt conveyor comprises a frame 1, to which a fixed plate 17 is fixedly connected, to which a plurality of rotating rollers 16 arranged at equal intervals are rotatably connected, the plurality of rotating rollers 16 are connected by a ring-shaped conveyor belt 25, and a rectangular groove is provided at one end of the rotating rollers 16 on both sides, a reciprocating screw rod 14 is rotatably connected to the frame 1, a fixed rod 13 and an extrusion block 12 are fixedly connected to the frame 1, a moving block 19 with an L-shaped cross section is threadedly connected to the reciprocating screw rod 14, the moving block 19 and the fixed rod 13 are slidably connected, a sliding assembly is arranged on the moving block 19, and the sliding assembly comprises a sliding rod 20 slidably mounted on the moving block 19, and a mounting plate 6 is fixedly connected to the upper end of the sliding rod 20.

[0034] Two servo motors are fixedly connected to the mounting plate 6, and the driving end of each servo motor is fixedly connected to a fixed cylinder 27, and a rectangular block 24 is fixedly connected inside the fixed cylinder 27. A plurality of fixed rings 26 are fixedly connected to the mounting plate 6, and the plurality of fixed rings 26 are arranged between the two fixed cylinders 27. A material guide frame 2 is fixedly connected to the frame body 1, and an inclined surface and a plane are arranged on the extrusion block 12. A limiting ring 18 is fixedly connected to the slide bar 20, and the lower end of the slide bar 20 is in contact with the plane. During the relative sliding of the moving block 19 and the fixed rod 13, the distance between the mounting plate 6 and the fixed plate 17 increases at the same time, and the lower end surface of the slide bar 20 will slide along the plane, and the inclined surface and the plane on the extrusion block 12 are connected by an arc transition. After the rectangular block 24 is completely separated from the rectangular groove, the lower end surface of the slide bar 20 will gradually contact the arc and the inclined surface under the action of gravity during the movement of the slide bar 20.

[0035] A bending rod 9 is slidably connected to the frame body 1, and a fixing sleeve 28 is clamped at one end of the bending rod 9, and a scraper 21 is fixedly connected to the fixing sleeve 28. A spring 29 is sleeved on the bending rod 9, and one end of the spring 29 is fixedly connected to the bending rod 9, and the other end of the spring 29 is fixedly connected to the frame body 1. A mounting frame 15 is fixedly connected to the upper surface of the frame body 1, and a sliding opening is provided on the mounting frame 15. A slider 8 with an I-shaped cross-section is slidably connected in the sliding opening. The slider 8 is connected to the fixing sleeve 28 through a threaded rod 23. A groove for connecting the threaded rod 23 is provided on the bending rod 9. A blocking plate 11 is clamped at one side of the frame body 1, and an arc-shaped opening for connecting the bending rod 9 is provided on the blocking plate 11. A dust removing plate 10 is fixedly connected to the frame body 1, and the dust removing plate 10 is inclined and arranged below the scraper 21.

[0036] The bending rod 9 is pulled in the direction away from the frame 1, and the spring 29 is deformed. Then, the blocking plate 11 is taken out from the frame 1, and the external force applied to the bending rod 9 is removed. Under the elastic force of the spring 29, the bending rod 9 will slide relative to the frame 1 until the surface of the scraper 21 is in close contact with the surface of the endless conveyor belt 25. In the subsequent transmission process of the endless conveyor belt 25, it will move relative to the scraper 21. Under the blocking action of the scraper 21, the impurities on the surface of the endless conveyor belt 25 can be scraped off. The scraped impurities fall on the impurity removing plate 10 and can slide out along the surface of the impurity removing plate 10. The fixing sleeve 28 is sleeved on one end of the bending rod 9, and then one end of the threaded rod 23 is passed through the slider 8 and the fixing sleeve 28, and is threadedly connected to the groove, so that the fixing sleeve 28 can be firmly connected to the bending rod 9, and the bending rod 9 can be effectively prevented from rotating. Similarly, when the scraper 21 is damaged or needs to be cleaned, it is also convenient to disassemble the scraper 21.

[0037] A mounting groove is provided on the side of the frame 1 away from the mounting frame 15, and a bidirectional screw rod 22 is rotatably connected in the mounting groove. Two symmetrically arranged mounting bars 3 are threadedly connected to the bidirectional screw rod 22, and one end of each mounting bar 3 is slidably connected to the mounting groove. Two first motors are fixedly connected to the frame 1, and the driving ends of the two first motors are respectively fixedly connected to the reciprocating screw rod 14 and the bidirectional screw rod 22. A push plate 7 is provided on one side of each mounting bar 3, and the two push plates 7 are located above the circular conveyor belt 25. The first motor drives the bidirectional screw rod 22 to rotate, so that the two mounting bars 3 can move back and forth along the bidirectional screw rod 22 at the same time, thereby driving the two push plates 7 to move back and forth. In the process of the two push plates 7 moving back and forth, the objects transported on the circular conveyor belt 25 can be pushed so that the objects are centered on the circular conveyor belt 25, effectively preventing the objects from being separated from the circular conveyor belt 25 during the transportation process.

[0038] The adjusting rod 5 is threadedly connected to each mounting bar 3, and the adjusting rod 5 passes through one end of the mounting bar 3 and is rotatably connected to the push plate 7. The cross section of the adjusting rod 5 is T-shaped, and one side of each push plate 7 is fixedly connected to a limiting rod 4, and the limiting rod 4 and the mounting bar 3 are slidably connected. When the adjusting rod 5 is rotated, the adjusting rod 5 and the mounting bar 3 are threadedly connected, and the adjusting rod 5 will also rotate relative to the push plate 7 and cannot be separated, so that the push plate 7 will move along the adjusting rod 5, and the limiting rod 4 and the mounting bar 3 will slide relative to each other, so as to adjust the distance between the two push plates 7 according to the actual volume of the conveyed object.

[0039] The method of using the endless belt conveyor includes the following steps:

[0040] S1: When the endless conveyor belt 25 is seriously worn or aged and needs to be disassembled and replaced, the first motor starts to work and drives the reciprocating screw 14 to rotate, the moving block 19 moves along the reciprocating screw 14, and the distance between the mounting plate 6 and the fixed plate 17 increases at the same time, the lower end surface of the slide bar 20 slides along the plane, and the two rectangular blocks 24 gradually separate from the rectangular groove;

[0041] S2: When the rectangular block 24 is separated from the rectangular groove, each fixing ring 26 moves to the outside of the rotating roller 16. After the rectangular block 24 is completely separated from the rectangular groove, the lower end surface of the slide bar 20 gradually contacts the curved surface and the inclined surface under the action of gravity during the movement, until the mounting plate 6 is completely moved to the bottom of the rotating roller 16. At this time, the mounting plate 6 and the endless conveyor belt 25 are in a staggered state;

[0042] S3: Then, the annular conveyor belt 25 is pulled outward to pull the annular conveyor belt 25 out from the multiple rotating rollers 16, so as to realize the disassembly of the damaged annular conveyor belt 25, and then a new annular conveyor belt 25 is installed on the outside of the multiple rotating rollers 16. Finally, the first motor drives the reciprocating screw 14 to rotate again, so that the moving block 19 moves in the opposite direction along the reciprocating screw 14, so that the two rectangular blocks 24 can be reconnected with the two rectangular grooves respectively.

[0043] In the present invention, in the initial state, the two rectangular blocks 24 are respectively clamped in the two rectangular grooves. At this time, the lower end face of the slide bar 20 is in close contact with the plane, and the upper surface of the limit ring 18 is in close contact with the lower surface of the moving block 19. The objects to be transported are placed on the annular conveyor 25 from one side of the installation frame 15 in sequence. At this time, the surface of the annular conveyor 25 is in close contact with the surfaces of multiple rotating rollers 16, and the two servo motors simultaneously drive the fixed cylinder 27 to rotate. Under the common transmission action of the two rectangular blocks 24, the rotating rollers 16 on both sides can be driven to rotate at the same time. At this time, the annular conveyor 25 is in a tensioned state, and the annular conveyor 25 will perform annular transmission, so that the objects can be transported and processed. Finally, the objects can fall from the annular conveyor 25 onto the material guide frame 2, and slide out from the inclined material guide frame 2 for storage.

[0044] When the endless conveyor belt 25 is seriously worn or aged and needs to be disassembled and replaced, the first motor starts to work and drives the reciprocating screw 14 to rotate, and the moving block 19 moves along the reciprocating screw 14. During the relative sliding of the moving block 19 and the fixed rod 13, the distance between the mounting plate 6 and the fixed plate 17 increases at the same time, and the lower end surface of the slide bar 20 slides along the plane, and the two rectangular blocks 24 gradually separate from the rectangular groove. When the rectangular block 24 separates from the rectangular groove, each fixing ring 26 moves to the outside of the rotating roller 16, and the inclined surface and the plane on the extrusion block 12 are connected by an arc transition. After the rectangular block 24 is completely separated from the rectangular groove, the lower end surface of the slide bar 20 gradually contacts the arc and the inclined surface under the action of gravity during the movement of the slide bar 20, and the slide bar 20 and the mounting plate 6 move downward at the same time until the mounting plate 6 is completely moved to the bottom of the rotating roller 16. At this time, the mounting plate 6 and the endless conveyor belt 25 are in a staggered state.

[0045] Afterwards, the annular conveyor belt 25 can be pulled outward to move it away from the fixed plate 17, and the annular conveyor belt 25 can be pulled out from the multiple rotating rollers 16 to achieve the disassembly of the damaged annular conveyor belt 25. Similarly, a new annular conveyor belt 25 can be installed on the outside of the multiple rotating rollers 16. Finally, the first motor drives the reciprocating screw rod 14 to rotate again, so that the moving block 19 moves in the opposite direction along the reciprocating screw rod 14, so that the two rectangular blocks 24 can be reconnected to the two rectangular grooves respectively, so that the annular conveyor belt 25 can be quickly disassembled and replaced. The operation is relatively convenient and quick, which is conducive to the use of the annular belt conveyor.

[0046] In the initial state, the blocking plate 11 is engaged with the frame 1, and the bending rod 9 is in close contact with the arc-shaped opening. At this time, the scraper 21 and the endless conveyor belt 25 are in a disengaged state. When the endless conveyor belt 25 needs to be cleaned, the bending rod 9 is first pulled away from the frame 1, and the spring 29 is deformed. Then the blocking plate 11 is removed from the frame 1, and the external force applied to the bending rod 9 is removed. Under the elastic force of the spring 29, the bending rod 9 will slide relative to the frame 1 until the surface of the scraper 21 is in close contact with the surface of the endless conveyor belt 25. During the subsequent transmission of the endless conveyor belt 25, it will move relative to the scraper 21. Under the blocking action of the scraper 21, the impurities on the surface of the endless conveyor belt 25 can be scraped off, so as to realize the rapid and automatic cleaning of the endless conveyor belt 25 and facilitate the use of the endless belt conveyor.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An endless belt conveyor, comprising a frame (1), characterized in that: The frame (1) is fixedly connected to a fixed plate (17), and a plurality of rotating rollers (16) arranged at equal intervals are rotatably connected to the fixed plate (17). The plurality of rotating rollers (16) are connected via an endless conveyor belt (25), and a rectangular groove is provided at one end of the rotating rollers (16) located on both sides; A reciprocating screw rod (14) is rotatably connected to the frame body (1), a fixed rod (13) and an extrusion block (12) are fixedly connected to the frame body (1), a moving block (19) having an L-shaped cross section is threadedly connected to the reciprocating screw rod (14), the moving block (19) and the fixed rod (13) are slidably connected, a sliding assembly is arranged on the moving block (19), the sliding assembly comprises a sliding rod (20) slidably mounted on the moving block (19), and the upper end of the sliding rod (20) is fixedly connected to a mounting plate (6); Two servo motors are fixedly connected to the mounting plate (6), a driving end of each servo motor is fixedly connected to a fixing cylinder (27), a rectangular block (24) is fixedly connected inside the fixing cylinder (27), a plurality of fixing rings (26) are fixedly connected to the mounting plate (6), the plurality of fixing rings (26) are arranged between the two fixing cylinders (27), and a material guide frame (2) is fixedly connected to the frame body (1).

2. The endless belt conveyor according to claim 1, characterized in that: The extrusion block (12) is provided with an inclined surface and a flat surface, the slide rod (20) is fixedly connected to a limiting ring (18), and the lower end of the slide rod (20) is in contact with the flat surface.

3. The endless belt conveyor according to claim 2, characterized in that: A bending rod (9) is slidably connected to the frame (1), one end of the bending rod (9) is clamped with a fixing sleeve (28), a scraper (21) is fixedly connected to the fixing sleeve (28), a spring (29) is sleeved on the bending rod (9), one end of the spring (29) is fixedly connected to the bending rod (9), and the other end of the spring (29) is fixedly connected to the frame (1).

4. The endless belt conveyor according to claim 3, characterized in that: The upper surface of the frame (1) is fixedly connected to a mounting frame (15), the mounting frame (15) is provided with a sliding opening, a sliding block (8) having an I-shaped cross section is slidably connected in the sliding opening, the sliding block (8) is connected to the fixing sleeve (28) via a threaded rod (23), and a groove for connecting the threaded rod (23) is provided on the bending rod (9).

5. The endless belt conveyor according to claim 3, characterized in that: A blocking plate (11) is clamped on one side of the frame body (1), and an arc-shaped opening for connecting the bending rod (9) is provided on the blocking plate (11).

6. The endless belt conveyor according to claim 3, characterized in that: The frame (1) is fixedly connected with a debris removal plate (10), the debris removal plate (10) is arranged in an inclined manner, and the debris removal plate (10) is arranged below the scraper (21).

7. The endless belt conveyor according to claim 4, characterized in that: A mounting groove is provided on a side of the frame (1) away from the mounting frame (15), and a bidirectional screw rod (22) is rotatably connected in the mounting groove. Two symmetrically arranged mounting strips (3) are threadedly connected to the bidirectional screw rod (22), and one end of each mounting strip (3) is slidably connected to the mounting groove. Two first motors are fixedly connected to the frame (1), and the driving ends of the two first motors are respectively fixedly connected to the reciprocating screw rod (14) and the bidirectional screw rod (22), and a push plate (7) is provided on one side of each mounting strip (3).

8. The endless belt conveyor according to claim 7, characterized in that: An adjusting rod (5) is threadedly connected to each of the mounting bars (3); the adjusting rod (5) passes through one end of the mounting bar (3) and is rotatably connected to the push plate (7); and the cross section of the adjusting rod (5) is T-shaped.

9. The endless belt conveyor according to claim 7, characterized in that: One side of each push plate (7) is fixedly connected to a limiting rod (4), and the limiting rod (4) and the mounting bar (3) are slidably connected.

10. A method for using the endless belt conveyor according to claim 7, characterized in that: The following steps are involved: S1: When the annular conveyor belt (25) is seriously worn or aged and needs to be disassembled and replaced, the first motor starts to work and drives the reciprocating screw (14) to rotate, and the moving block (19) moves along the reciprocating screw (14). The distance between the mounting plate (6) and the fixed plate (17) increases at the same time, and the lower end surface of the sliding rod (20) slides along the plane, and the two rectangular blocks (24) gradually separate from the rectangular groove; S2: When the rectangular block (24) is separated from the rectangular groove, each fixing ring (26) moves to the outside of the rotating roller (16). After the rectangular block (24) is completely separated from the rectangular groove, the lower end surface of the slide bar (20) gradually contacts the curved surface and the inclined surface under the action of gravity during the movement, until the mounting plate (6) is completely moved to the bottom of the rotating roller (16). At this time, the mounting plate (6) and the endless conveyor belt (25) are in a staggered state; S3: Then, the annular conveyor belt (25) is pulled outward to pull the annular conveyor belt (25) out from the plurality of rotating rollers (16), thereby realizing the disassembly of the damaged annular conveyor belt (25), and then a new annular conveyor belt (25) is sleeved and installed on the outer sides of the plurality of rotating rollers (16). Finally, the first motor drives the reciprocating screw rod (14) to rotate again, so that the moving block (19) moves in the opposite direction along the reciprocating screw rod (14), so that the two rectangular blocks (24) are respectively reconnected to the two rectangular grooves.

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