An apparatus and method for disassembling and assembling a conveyor belt for pop-top cans

Abstract

The present invention relates to the technical field of conveyor belt disassembly and assembly, and discloses a device and method for disassembling and assembling an aluminum can conveyor belt. A fixed tension belt is fixedly sleeved and assembled on the tension ratchet body, and a moving tension belt is wound and assembled on the tension ratchet body. The other end of the fixed tension belt is provided with a first hook unit, and the other end of the moving tension belt is provided with a second hook unit. A plurality of sets of limit tooth claws with the same structure are installed in the track. Only by inserting the first hook unit and the second hook unit into the gap on the conveyor belt and then reciprocally rotating the tension ratchet body can the moving tension belt be tightened, and then the conveyor belt can be tensioned by using the first hook unit and the second hook unit, which is convenient for the disassembly and assembly operation of the conveyor belt. During the process of tensioning the conveyor belt, the limit tooth claws are self-locked to the conveyor belt through the anti-disengagement assembly, greatly improving the installation limit degree of the disassembly and assembly device for the conveyor belt and preventing self-disengagement.

Description

Technical Field

[0001] The present invention relates to the technical field of conveyor belt disassembly and assembly, and particularly relates to a device and method for disassembling and assembling an aluminum can conveyor belt. Background Art

[0002] During the production of aluminum cans, a conveyor belt is required for transmission. The conveyor belt is usually horizontally arranged. At the same time, since the aluminum can conveyor belt is formed by hinging multiple conveyor belt units with the same structure, and is driven by a driving wheel and tensioned by a tensioning roller to ensure the conveying stability of the conveyor belt and prevent slipping of teeth. However, during the use of the conveyor belt, it is inevitable that the conveyor belt needs to be maintained due to damage or wear, and at this time, the conveyor belt needs to be disassembled and assembled.

[0003] It is found during the actual disassembly and assembly of the conveyor belt that: it is necessary to open the driving wheel protection cover and release the tensioning roller, then remove the driving wheel, and it may also be necessary to remove the guide rail before the conveyor belt can be disassembled and assembled. The operation is too troublesome. In actual production, it is found that when disassembling locally, the conveyor belt can be tightened to a certain extent and maintained for a period of time, and then two smaller screwdrivers or cones are used by hand to insert into the conveyor belt gap or hole and pull forcefully in opposite directions, but this method is very demanding on the arm strength of the staff and is quite laborious, or the staff stands on the conveyor belt and manually reverses the motor to tighten the conveyor belt, but this method has potential safety hazards.

[0004] The above two methods used in production practice have defects such as instability, low efficiency, insecurity, and easy occurrence of accidents. Therefore, the present invention provides a device and method for disassembling and assembling an aluminum can conveyor belt to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a device and method for disassembling and assembling an aluminum can conveyor belt to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An aluminum can conveyor belt disassembly and assembly device, including a tensioning ratchet body, a fixed tensioning belt is fixedly sleeved and assembled on the tensioning ratchet body, a moving tensioning belt is wound and assembled on the tensioning ratchet body, a first hook claw unit is installed at the other end of the fixed tensioning belt, a second hook claw unit is installed at the other end of the moving tensioning belt, and the second hook claw unit and the first hook claw unit have the same structural composition;

[0007] The second hook claw unit includes a mounting plate, a track is provided on the mounting plate, and multiple groups of identical limiting tooth claws are installed in the track.

[0008] Preferably, the limiting claw teeth are set as a first claw tooth unit, the track is arranged along the width direction of the mounting plate, and there are four groups of the first claw tooth units, and each group of the first claw tooth units is perpendicular to the mounting plate.

[0009] Preferably, the first claw tooth unit includes a first sliding seat slidably assembled in the track, a first hook claw body is fixedly installed at the bottom of the first sliding seat, a first threaded column is fixed at the top of the first sliding seat, a first fastening nut is threadedly connected to the first threaded column, and the first fastening nut abuts against the top of the mounting plate.

[0010] Preferably, the limiting claw teeth are set as a second claw tooth unit, and there are four groups of the second claw tooth units, and each group of the second claw tooth units is perpendicular to the mounting plate.

[0011] Preferably, the second claw tooth unit includes a second sliding seat slidably assembled in the track, a fixed claw is fixedly installed at the bottom of the second sliding seat, a second threaded column is fixed at the top of the second sliding seat, a second fastening nut is threadedly connected to the second threaded column, and the second fastening nut abuts against the top of the mounting plate. A moving claw is hingedly installed on the outer side of the bottom of the fixed claw through a hinge bushing, and a hanging seat is fixed at the top of the moving claw.

[0012] Preferably, an anti - detachment component installed on the mounting plate is further included, and the anti - detachment component is connected to each group of the second claw tooth units.

[0013] Preferably, the anti - detachment component includes a receiving groove opened on the mounting plate, a pulling plate is slidably assembled in the receiving groove, a connecting column is fixed at the top of the pulling plate, and the number of the connecting columns is the same as the number of the second claw tooth units. A tensioning rope is fixedly connected to each group of the connecting columns, and the other end of each group of the tensioning ropes passes through the corresponding second claw tooth unit and is connected to the top of the moving claw.

[0014] Preferably, the connecting columns correspond to the second claw tooth units one by one, and the end of the tensioning rope passes through the second threaded column, the second sliding seat, and the fixed claw from top to bottom and is connected to the hanging seat.

[0015] Preferably, the opposite side walls of the fixed claw and the moving claw are both inclined planes and form a trumpet shape, and the hanging seat is located on the side close to the tensioning ratchet body.

[0016] The present invention also discloses a disassembly and assembly method for an aluminum can conveyor belt, and the specific steps are as follows:

[0017] S1: When disassembling the conveyor belt, first make corresponding adjustments to the first hook claw unit and the second hook claw unit, that is, manually loosen the second fastening nut, then adjust the position of the second claw tooth unit according to the hole pitch on the conveyor belt, and then tighten the second fastening nut so that the distance between two adjacent groups of the second claw tooth units is the same as the distance between two adjacent holes on the conveyor belt;

[0018] S2: Insert the adjusted second claw unit on both sides of the conveyor belt unit to be disassembled. That is, the first hook claw unit and the second hook claw unit are respectively installed on two adjacent conveyor belt units of the conveyor belt unit to be disassembled, isolating the conveyor belt unit to be disassembled.

[0019] S3: Operate the tensioning ratchet body so that the moving tensioning belt is gradually wound around the tensioning ratchet body. At this time, the conveyor belt is gradually tensioned and maintained. During the tensioning process of the conveyor belt, the tensioning belt pulls the moving claw through the anti - detachment component, making an obtuse angle between the moving claw and the fixed claw, ensuring that the moving claw is stuck in the gap of the conveyor belt and will not fall off during tensioning. After the conveyor belt is tensioned, the conveyor belt unit to be disassembled becomes loose, and the staff can remove the conveyor belt unit to be disassembled, and then disassemble the remaining conveyor belt units in turn.

[0020] S4: When installing the conveyor belt, connect the conveyor belt units in sequence and install them on the conveyor driving wheel. When installing the last conveyor belt unit, operate according to the above steps. Use the disassembly and assembly device to keep the last two conveyor belt units in a tensioned state, and then install the last conveyor belt unit on the last two conveyor belt units. Operate the tensioning ratchet body to loosen, and the installation can be completed.

[0021] Technical effects and advantages of the present invention:

[0022] 1. In the present invention, moving the first claw unit in the track, that is, moving the first sliding seat, can drive the first hook claw body to move synchronously, facilitating the adjustment of the distance between two adjacent first claw units, so as to match the distance between the pores on the conveyor belt, improving the adaptability. And when the first claw unit slides in the track, it ensures the anti - flipping effect of the first claw unit. In this way, it is very convenient to realize the tensioning operation of the conveyor belt through the tensioning ratchet body, facilitating the disassembly and assembly of the conveyor belt and reducing the difficulty of disassembly and assembly of the conveyor belt.

[0023] 2. The present invention optimizes the limiting claw teeth into the second claw unit, and at the same time, with the use of the anti - detachment component, during the tensioning process of the conveyor belt, the tensioning rope is pulled to move, and then through the pulling effect of the tensioning rope, the moving claw rotates around the hinge bushing towards the direction close to the fixed claw, so that an obtuse angle is formed between the fixed claw and the moving claw, that is, a barbed hook shape is formed, which can realize the self - locking of the limiting claw teeth on the conveyor belt during the tensioning process of the conveyor belt, greatly improving the installation limiting degree of the disassembly and assembly device on the conveyor belt, preventing self - detachment and improving the use safety. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall first - perspective structure of the first embodiment of the present invention;

[0025] Figure 2Schematic diagram of the overall second perspective structure of the first embodiment of the present invention;

[0026] Figure 3 Schematic diagram of the structure of the second hook unit of the present invention;

[0027] Figure 4 Schematic diagram of the overall structure of the second embodiment of the present invention;

[0028] Figure 5 Top view of the structure of the second hook unit of the second embodiment of the present invention;

[0029] Figure 6 Bottom view of the structure of the second hook unit of the second embodiment of the present invention;

[0030] Figure 7 Schematic diagram of the assembly structure of the second claw tooth unit and the anti - detachment component of the present invention.

[0031] In the figure: 1, ratchet body for tensioning; 2, fixed tensioning belt; 3, movable tensioning belt; 4, first hook unit; 5, second hook unit; 6, first claw tooth unit; 61, first sliding seat; 62, first hook body; 63, first threaded post; 64, first fastening nut; 7, mounting plate; 8, track; 9, second claw tooth unit; 91, second sliding seat; 92, fixed claw; 93, second threaded post; 94, second fastening nut; 95, hinge bushing; 96, movable claw; 97, hanging seat; 10, anti - detachment component; 101, pulling plate; 102, connecting column; 103, tensioning rope; 104, slider; 105, receiving groove. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1:

[0034] As Figures 1 to 3As shown in the figure, this embodiment discloses a device for disassembling and assembling an aluminum can conveyor belt, which includes a tensioning ratchet body 1. A fixed tensioning belt 2 is fixedly sleeved and assembled on the tensioning ratchet body 1, and a moving tensioning belt 3 is wound and assembled on the tensioning ratchet body 1. The other end of the fixed tensioning belt 2 is installed with a first hook unit 4, and the other end of the moving tensioning belt 3 is installed with a second hook unit 5. Moreover, the second hook unit 5 and the first hook unit 4 have the same structural composition. When in use, only need to insert the first hook unit 4 and the second hook unit 5 into the gaps on the conveyor belt, and then rotate the tensioning ratchet body 1 reciprocally to tighten the moving tensioning belt 3. Then, utilize the first hook unit 4 and the second hook unit 5 to realize the tensioning operation of the conveyor belt, which is convenient for the disassembly and assembly operation of the conveyor belt.

[0035] Please refer to Figure 3 , the second hook unit 5 includes a mounting plate 7. A track 8 is opened on the mounting plate 7. A plurality of sets of identical limiting claw teeth are installed in the track 8. The limiting claw teeth are set as the first claw tooth unit 6. The track 8 is arranged along the width direction of the mounting plate 7, and the first claw tooth unit 6 is four groups. Each group of the first claw tooth unit 6 is perpendicular to the mounting plate 7. And when the limiting claw teeth are inserted into the pores on the conveyor belt, it can well realize the limiting property between the disassembly and assembly device and the conveyor belt.

[0036] Please refer to Figure 3 , the first claw tooth unit 6 includes a first sliding seat 61 slidably assembled in the track 8. A first hook body 62 is fixedly installed at the bottom of the first sliding seat 61. A first threaded column 63 is fixed at the top of the first sliding seat 61. A first fastening nut 64 is threadedly connected to the first threaded column 63, and the first fastening nut 64 is attached to the top of the mounting plate 7.

[0037] When in use, the first claw tooth unit 6 can be moved in the track 8, that is, move the first sliding seat 61, which can drive the first hook body 62 to move synchronously, facilitating the adjustment of the distance between two adjacent groups of the first claw tooth unit 6, so as to match the distance between the pores on the conveyor belt and improve the adaptability. Moreover, when the first claw tooth unit 6 slides in the track 8, it ensures the anti-overturning effect of the first claw tooth unit 6. In this way, it is very convenient to realize the tensioning operation of the conveyor belt through the tensioning ratchet body 1 and facilitate the disassembly and assembly of the conveyor belt.

[0038] Embodiment 2:

[0039] During the use of Embodiment 1, it was found that since the conveyor belt is formed by hinging multiple conveyor belt units with the same structure, when the disassembly and assembly device is used to tighten two separated conveyor belt units, it can play a tightening role. However, if the tightening degree is insufficient, the disassembly and assembly of the conveyor belt cannot be completed. Once the tightening degree is too high, since the limit claw teeth are perpendicular to the conveyor belt, it is very easy for the conveyor belt unit at the position of the limit claw teeth to deflect during the continuous tightening of the conveyor belt. In this way, during the continuous operation of tightening the ratchet body 1 to tighten the conveyor belt unit, the limit claw teeth will fall off from the pores on the conveyor belt unit, resulting in the failure of the conveyor belt tightening operation. If the limit claw teeth are designed to be arc-shaped or barbed, it is very difficult to install the limit claw teeth into the pores on the conveyor belt, and the operation is rather troublesome. Based on this, the limit claw teeth are optimized and improved in this embodiment. Specifically:

[0040] Please refer to Figures 4 - 7 , the limit claw teeth are set as the second claw tooth unit 9. There are four groups of the second claw tooth units 9. Each group of the second claw tooth units 9 is vertically arranged with the mounting plate 7. The second claw tooth units 9 can also move within the track 8, which is convenient for real-time adjustment according to the distance between the pores on the conveyor belt.

[0041] Please refer to Figure 7 , the second claw tooth unit 9 includes a second sliding seat 91 slidably assembled within the track 8. A fixed claw 92 is fixedly installed at the bottom of the second sliding seat 91. A second threaded column 93 is fixed at the top of the second sliding seat 91. A second fastening nut 94 is threadedly connected to the second threaded column 93, and the second fastening nut 94 is attached to the top of the mounting plate 7. The operation method is the same as that of the first claw tooth unit 6 in Embodiment 1, and the position adjustment and fixation of the second claw tooth unit 9 can be easily completed.

[0042] It should be noted that a moving claw 96 is hingedly installed on the outer side of the bottom of the fixed claw 92 through a hinge bushing 95. A suspension seat 97 is fixed at the top of the moving claw 96. The opposite side walls of the fixed claw 92 and the moving claw 96 are both inclined planes and form a horn shape. The suspension seat 97 is located on the side close to the tightening ratchet body 1. An anti-detachment component 10 is also installed on the mounting plate 7. The anti-detachment component 10 is connected to each group of the second claw tooth units 9. In this way, the first hook claw body 62 in Embodiment 1 is split into a hinged fixed claw 92 and moving claw 96, which can drive the anti-detachment component 10 to act during the tightening of the conveyor belt, so that it drives the moving claw 96 to flip relative to the fixed claw 92 to complete the self-locking of the conveyor belt.

[0043] Please refer to 5- Figure 7The anti-slip assembly 10 includes a receiving groove 105 opened on the mounting plate 7, and a pull plate 101 is slidably assembled in the receiving groove 105. A slider 104 is provided on the side wall of the pull plate 101, and a sliding groove is opened on the inner wall of the receiving groove 105 to facilitate the sliding of the slider 104 in the sliding groove, thereby ensuring the stability of the pull plate 101 when sliding in the receiving groove 105. A connecting column 102 is fixed to the top of the pull plate 101, and the number of connecting columns 102 is the same as the number of second claw units 9. A tensioning rope 103 is fixedly connected to each group of connecting columns 102, and the other end of each group of tensioning ropes 103 passes through the corresponding second claw unit 9 and is connected to the top of the movable claw 96. The connecting column 102 and the second claw unit 9 correspond one to one, and the end of the tensioning rope 103 passes through the second threaded column 93, the second slide 91, and the fixed claw 92 from top to bottom and is connected to the hanging seat 97.

[0044] In actual use, after completing the corresponding adjustment of the distance between the first hook unit 4 and the second hook unit 5 and the gap on the conveyor belt, the first hook unit 4 and the second hook unit 5 are inserted into the separated conveyor belt units, and then the tensioning ratchet body 1 is operated to cause the dynamic tensioning belt 3 to be gradually wound around the tensioning ratchet body 1. At this time, the conveyor belt is gradually tightened and maintained. At the same time, the dynamic tensioning belt 3 will continue to generate tension on the pulling plate 101, causing the pulling plate 101 to move in the receiving groove 105, and the mounting plate 7 and the limiting tooth claw are limited on the conveyor belt, so the pulling plate 101 will pull the tensioning rope 103 to move, and then the pulling action of the tensioning rope 103 drives the movable claw 96 to rotate around the hinge sleeve 95 toward the direction of the fixed claw 92, so that an obtuse angle is formed between the fixed claw 92 and the movable claw 96, that is, a barbed hook shape is formed, which can realize the self-locking of the limiting tooth claw to the conveyor belt during the process of tightening the conveyor belt, greatly improving the installation limit of the disassembly and assembly device to the conveyor belt, preventing self-detachment, and improving the safety of use.

[0045] It should be noted that when there is no tension on the dynamic tensioning belt 3, there is naturally no tension on the tensioning plate 101. At this time, the tensioning rope 103 will not have a pulling force on the movable claw 96. At this time, the movable claw 96 is in a vertical state, which facilitates the detachment of the limiting tooth claw from the gap on the conveyor belt, and the operation is convenient and safe.

[0046] Example 3:

[0047] This embodiment discloses a method for disassembling and assembling a can conveyor belt, and the specific steps are as follows:

[0048] S1: When disassembling the conveyor belt, first adjust the first hook unit 4 and the second hook unit 5 accordingly, that is, manually loosen the second fastening nut 94, then adjust the position of the second claw unit 9 according to the hole pitch on the conveyor belt, and then tighten the second fastening nut 94 so that the distance between two adjacent groups of second claw units 9 is the same as the distance between two adjacent holes on the conveyor belt;

[0049] S2: Insert the adjusted second pawl unit 9 on both sides of the conveyor belt unit to be disassembled. That is, the first hook pawl unit 4 and the second hook pawl unit 5 are respectively installed on two adjacent conveyor belt units of the conveyor belt unit to be disassembled, so as to isolate the conveyor belt unit to be disassembled.

[0050] S3: Operate the tensioning ratchet body 1 so that the moving tensioning belt 3 is gradually wound around the tensioning ratchet body 1. At this time, the conveyor belt is gradually tensioned and maintained. During the tensioning process of the conveyor belt, the tensioning belt pulls the moving pawl 96 through the anti-detachment assembly 10, so that an obtuse angle is formed between the moving pawl 96 and the fixed pawl 92, ensuring that the moving pawl 96 is stuck in the gap of the conveyor belt and will not fall off during tensioning. After the conveyor belt is tensioned, the conveyor belt unit to be disassembled becomes loose. The staff can then remove the conveyor belt unit to be disassembled, and then disassemble the remaining conveyor belt units in sequence.

[0051] S4: When installing the conveyor belt, connect the conveyor belt units in sequence and install them on the conveyor driving wheel. When installing the last conveyor belt unit, operate according to the above steps. Use the disassembly and assembly device to keep the last two conveyor belt units in a tensioned state all the time, and then install the last conveyor belt unit on the last two conveyor belt units. Operate to loosen the tensioning ratchet body 1 to complete the installation.

[0052] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for disassembling and assembling an aluminum can conveyor belt, characterized in that: It includes a tensioning ratchet body, on which a fixed tensioning belt is fixedly sleeved and assembled, a moving tensioning belt is wound and assembled on the tensioning ratchet body, a first hook claw unit is installed at the other end of the fixed tensioning belt, a second hook claw unit is installed at the other end of the moving tensioning belt, and the second hook claw unit and the first hook claw unit have the same structural composition; The second hook claw unit includes a mounting plate, on which a track is provided, and a plurality of groups of identical limiting claw teeth are installed in the track; The limiting claw teeth are set as the second claw tooth units, there are four groups of the second claw tooth units, and each group of the second claw tooth units is perpendicular to the mounting plate; The second claw tooth unit includes a second sliding seat slidably assembled in the track, a fixed claw is fixedly installed at the bottom of the second sliding seat, a second threaded column is fixed at the top of the second sliding seat, a second fastening nut is threadedly connected to the second threaded column, and the second fastening nut is attached to the top of the mounting plate. A moving claw is hingedly installed on the outer side of the bottom of the fixed claw through a hinge bushing, and a hanging seat is fixed at the top of the moving claw; It also includes an anti - detachment component installed on the mounting plate, and the anti - detachment component is connected to each group of the second claw tooth units; The anti - detachment component includes a receiving groove opened on the mounting plate, a pulling plate is slidably assembled in the receiving groove, a connecting column is fixed at the top of the pulling plate, and the number of the connecting columns is the same as the number of the second claw tooth units. A tensioning rope is fixedly connected to each group of the connecting columns, and the other end of each group of the tensioning ropes passes through the corresponding second claw tooth unit and is connected to the top of the moving claw; The connecting columns correspond to the second claw tooth units one by one, and the end of the tensioning rope passes through the second threaded column, the second sliding seat, and the fixed claw from top to bottom and is connected to the hanging seat; The opposite side walls of the fixed claw and the moving claw are both inclined planes and form a horn shape, and the hanging seat is located on the side close to the tensioning ratchet body; The limiting claw teeth are set as the first claw tooth units, the track is arranged along the width direction of the mounting plate, and there are four groups of the first claw tooth units. Each group of the first claw tooth units is perpendicular to the mounting plate, and the second claw tooth unit can move in the track to make real - time adjustment according to the distance between the pores on the conveyor belt.

2. The device for disassembling and assembling the canned beverage conveyor belt according to claim 1, wherein: The first claw tooth unit includes a first sliding seat slidably assembled in the track, a first hook claw body is fixedly installed at the bottom of the first sliding seat, a first threaded column is fixed at the top of the first sliding seat, and a first fastening nut is threadedly connected to the first threaded column, and the first fastening nut is attached to the top of the mounting plate.

3. A method for disassembling and assembling an aluminum can conveyor belt is realized by using the aluminum can conveyor belt disassembling and assembling device as described in claim 2, and is characterized in that: The specific steps of the disassembly and assembly method are as follows: S1: When disassembling the conveyor belt, first make corresponding adjustments to the first hook claw unit and the second hook claw unit, that is, manually loosen the second fastening nut, then adjust the position of the second claw tooth unit according to the hole pitch on the conveyor belt, and then tighten the second fastening nut so that the distance between adjacent two groups of the second claw tooth units is the same as the distance between adjacent two holes on the conveyor belt; S2: Insert the adjusted second claw tooth unit on both sides of the conveyor belt unit to be disassembled, that is, the first hook claw unit and the second hook claw unit are respectively installed on two adjacent conveyor belt units of the conveyor belt unit to be disassembled, so as to isolate the conveyor belt unit to be disassembled; S3: Operate the tensioning ratchet body so that the moving tensioning belt is gradually wound around the tensioning ratchet body. At this time, the conveyor belt is gradually tensioned and maintained. During the tensioning process of the conveyor belt, the tensioning belt pulls the moving pawl through the anti-detachment component, causing an obtuse angle to form between the moving pawl and the fixed pawl, ensuring that the moving pawl is stuck in the gap of the conveyor belt and will not fall off during tensioning. After the conveyor belt is tensioned, the conveyor belt unit to be disassembled becomes loose, and the staff can remove the conveyor belt unit to be disassembled, and then disassemble the remaining conveyor belt units in sequence; S4: When installing the conveyor belt, connect the conveyor belt units in sequence and install them on the conveyor driving wheel. When installing the last set of conveyor belt units, operate according to the above steps, use the disassembly and assembly device to keep the last two sets of conveyor belt units in a tensioned state continuously, and then install the last set of conveyor belt units on the last two sets of conveyor belt units. Operate the tensioning ratchet body to loosen, and the installation can be completed.

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