Appearance visual inspection and abnormity elimination equipment for bare snow cakes

By designing a visual inspection device for rice cake appearance, and adopting a visual support and automatic correction mechanism, the problem of low efficiency in manual inspection of rice cakes was solved, and efficient and accurate appearance inspection and defect rejection were achieved.

CN224237601UActive Publication Date: 2026-05-15JIAXING YIXIN AUTOMATION EQUIP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIAXING YIXIN AUTOMATION EQUIP
Filing Date
2025-05-13
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

In existing technologies, the appearance inspection of naked rice crackers relies on manual inspection, which is inefficient and subjective, leading to inconsistent inspection results.

Method used

Design a visual inspection device for snow cake appearance, including a visual support, conveyor belt, correction mechanism, rejection mechanism, cleaning mechanism, and front and back visual inspection mechanisms. Maintain inspection accuracy by visual inspection and automatic correction and rejection of unqualified products.

Benefits of technology

It has achieved automation and high efficiency in the appearance inspection of rice cakes, reduced the subjectivity of manual inspection, and improved inspection accuracy and product quality consistency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an appearance visual inspection and abnormity elimination device for bare snow cakes, relates to the technical field of food equipment, and aims to solve the technical problem that detection results are easily inconsistent when defects on the snow cakes are observed by human eyes. According to the technical scheme, the device is characterized by comprising a device base and a visual support, the bottom of the visual support is arranged in the device base, a conveying belt mounting frame is arranged on the device base, a conveying mechanism is arranged on the conveying belt mounting frame, and a removing mechanism is arranged on one side of the conveying mechanism; the two sides of the conveying mechanism are each provided with an automatic belt deviation rectifying mechanism, one side of each automatic belt deviation rectifying mechanism is provided with a cleaning mechanism, the top of the visual support is provided with a front visual detection mechanism, the bottom of the visual support is provided with a reverse visual detection mechanism, and the two sides of the visual support are each provided with a quick belt dismounting mechanism. The utility model aims to provide the visual inspection and abnormity elimination equipment for the appearance of the bare snow cakes.
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Description

Technical Field

[0001] This utility model relates to food equipment, and more specifically, it relates to a visual inspection and defect removal device for naked rice crackers. Background Technology

[0002] Visual inspection and anomaly removal equipment plays a crucial role in modern food production, especially in the food and packaging industries. This equipment primarily uses machine vision technology to comprehensively inspect and remove anomalies from food, ensuring product quality and production efficiency. In the production of rice crackers / naked crackers, appearance quality directly impacts consumers' purchasing decisions.

[0003] In the existing technology, the traditional manual inspection method involves observing the snow cake with the human eye, which is not only inefficient, but also prone to inconsistencies in the inspection results due to eye fatigue and subjectivity.

[0004] Therefore, a new technical solution is urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a visual inspection and abnormal rejection device for naked rice cakes.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a visual inspection and anomaly removal device for naked snow cakes, characterized in that: it includes a device base and a visual support, the bottom of the visual support is disposed inside the device base, a conveyor belt mounting frame is disposed on the device base, a conveyor mechanism is disposed on the conveyor belt mounting frame, a removal mechanism is disposed on one side of the conveyor mechanism, a set of automatic belt correction mechanisms for correcting the conveyor mechanism is disposed on both sides of the conveyor mechanism, a cleaning mechanism for cleaning debris is disposed on one side of the automatic belt correction mechanism, a front visual inspection mechanism for inspecting the front of the snow cake is disposed at the top of the visual support, a back visual inspection mechanism for inspecting the back of the snow cake is disposed at the bottom of the visual support, and a set of belt quick-release mechanisms is disposed on both sides of the visual support.

[0007] By adopting the above technical solution: the equipment base provides corresponding support for the vision support, the suction roller is a material collection device located to the left of the front vision inspection mechanism. The front vision inspection mechanism first inspects the snow cakes on the suction roller (this is a front inspection). After the inspection is completed, the defective snow cakes are recorded. The snow cakes fall from the suction roller, changing their orientation. Through the transport of the conveyor mechanism, the reverse side of the snow cake faces directly below the reverse vision inspection mechanism, which can then inspect the other side of the snow cake. After the inspection is completed, the rejection mechanism can remove the unqualified snow cakes from either the front or the back. The belt quick-release mechanism can quickly disassemble the belt for easy cleaning. The automatic correction mechanism can correct the conveyor belt to prevent deviation during operation, which could lead to errors in snow cake inspection. The cleaning mechanism can clean the debris left by the snow cakes on the conveyor belt, keeping the surface of the conveyor belt clean and improving the accuracy of snow cake inspection.

[0008] The present invention is further configured such that: the conveying mechanism includes a conveyor belt, a driving pulley and a driven pulley, the conveyor belt is mounted on a conveyor belt mounting frame, one end of the conveyor belt is rotatably connected to the driving pulley, and the other end is rotatably connected to the driven pulley, and the driving pulley is driven by a driving component.

[0009] The present invention is further configured such that: the rejection mechanism includes a rejection cylinder, a rejection connector, a rejection plate, and a rejection base; the bottom bolt of the rejection cylinder is fixed to the rejection base, and its piston rod bolt is fixed to the rejection connector; the rejection base is bolted to one side of the equipment base; one end of the rejection plate is rotatably connected to the rejection connector, and the other end is rotatably connected to the equipment base; the rejection plate is inclined, with one end close to the conveyor belt.

[0010] The present invention is further configured such that: a rejection cavity is provided inside the base of the device, and a rejection inclined surface is provided inside the rejection cavity.

[0011] The present invention is further configured such that: the automatic belt correction mechanism includes a correction base, a correction cylinder, a correction push plate, a correction wheel, and a photoelectric sensor; the bottom of the correction base is bolted to the equipment base; the correction cylinder is bolted to one side of the correction base; the correction push plate is disposed on the piston rod of the correction cylinder; the correction wheel is rotatably connected to the top of the correction push plate and is located inside the conveyor belt; and the photoelectric sensor is disposed on the conveyor belt mounting frame.

[0012] The present invention is further configured such that: the cleaning mechanism includes a scraper, a clamping spring, a clamping connecting belt, and a cleaning mounting plate; the top of the scraper abuts against the conveyor belt, and its bottom is fixedly connected to the clamping connecting belt; the specific number of cleaning mounting plates is two, and the two cleaning mounting plates are respectively bolted to both sides of the equipment base; one end of the clamping spring is fixed to the cleaning mounting plate, and the other end is connected to the clamping connecting belt.

[0013] The present invention is further configured such that: the frontal visual inspection mechanism includes an upper crossbeam, a frontal mounting plate, a frontal camera, and an upper light source; both ends of the upper crossbeam are fixedly connected to the inner wall of the visual support; the specific number of the frontal mounting plates is several, and they are bolted to the upper crossbeam; the specific number of the frontal cameras is several, and one side of each camera is bolted to the frontal mounting plate; the upper light source is located below the frontal cameras, and its two sides are connected to the inner wall of the visual support.

[0014] The present invention is further configured such that: the reverse visual inspection mechanism includes a lower crossbeam, a reverse mounting plate, a reverse camera, and a lower light source; both ends of the lower crossbeam are fixedly connected to the inner wall of the visual support; the reverse mounting plate is of several kinds and is bolted to the lower crossbeam; the reverse camera is of several kinds and is bolted to one side of the reverse mounting plate; the lower light source is located below the reverse camera and its two sides are connected to the inner wall of the visual support.

[0015] The present invention is further configured such that: the belt quick-release mechanism includes a drive cylinder, a quick-release mounting base and a drive connector; the top bolt of the drive cylinder is fixed to the quick-release mounting plate, its piston rod bolt is fixed to the drive connector, the quick-release mounting base is bolted to the lower crossbeam, and the drive connector is rotatably connected to the driven pulley.

[0016] The present invention has the following beneficial effects: 1. The rejection plate allows qualified snow cakes to pass through the rejection plate to enter the next process, while unqualified snow cakes will be rejected.

[0017] 2. The removal cavity provides space for defective rice crackers, and the removal ramp allows defective rice crackers to enter the removal cavity more quickly.

[0018] 3. Photoelectric sensors, in conjunction with the correction wheel, can correct the left or right deviation of the conveyor belt.

[0019] 4. The scraper can clean up debris on the conveyor belt.

[0020] 5. The front and back cameras can detect the front and back of the rice cake respectively.

[0021] 6. The drive joint can pull up the driven pulley, loosening the conveyor belt for easier cleaning. Attached Figure Description

[0022] Figure 1 This is a side view of this embodiment;

[0023] Figure 2 This is a front view of this embodiment;

[0024] Figure 3 This is a top view of the automatic belt alignment mechanism in this embodiment;

[0025] Figure 4 This is a side view of the automatic belt alignment mechanism in this embodiment;

[0026] Figure 5 This is a schematic diagram of the planar structure of the rejection mechanism in this embodiment;

[0027] Figure 6 This is a schematic diagram of the planar structure of the belt quick-release mechanism in this embodiment;

[0028] Figure 7 This is a schematic diagram of the planar structure of the cleaning mechanism in this embodiment.

[0029] Figure Descriptions: 1. Equipment base; 2. Vision bracket; 3. Conveyor belt mounting frame; 4. Conveyor belt; 5. Drive pulley; 6. Driven pulley; 7. Rejection cylinder; 8. Rejection connector; 9. Rejection plate; 10. Rejection base; 11. Rejection cavity; 12. Rejection ramp; 13. Correction base; 14. Correction cylinder; 15. Correction push plate; 16. Correction wheel; 17. Photoelectric sensor; 18. Scraper; 19. Compression spring; 20. Compression connecting belt; 21. Cleaning mounting plate; 22. Upper crossbeam; 23. Front mounting plate; 24. Front camera; 25. Upper light source; 26. Lower crossbeam; 27. Reverse mounting plate; 28. Reverse camera; 29. ​​Lower light source; 30. Drive cylinder; 31. Quick-release mounting base; 32. Drive connector; 33. Suction roller. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0032] like Figure 1As shown, a visual inspection and defect removal device for rice crackers is characterized by: including a device base 1 and a vision support 2. The bottom of the vision support 2 is disposed inside the device base 1. A conveyor belt mounting frame 3 is disposed on the device base 1. A conveying mechanism is disposed on the conveyor belt mounting frame 3. A rejection mechanism is disposed on one side of the conveying mechanism. A set of automatic belt correction mechanisms for correcting the conveying mechanism is disposed on both sides of the conveying mechanism. A cleaning mechanism for cleaning debris is disposed on one side of the automatic belt correction mechanism. A front visual inspection mechanism for inspecting the front of the rice cracker is disposed at the top of the vision support 2. A back visual inspection mechanism for inspecting the back of the rice cracker is disposed at the bottom of the vision support 2. A set of belt quick-release mechanisms is disposed on both sides of the vision support 2.

[0033] The equipment base 1 provides corresponding support for the vision support 2. The suction roller 33 is a material collection device located to the left of the front vision inspection mechanism. The front vision inspection mechanism first inspects the snow cakes on the suction roller 33. This is a front inspection. After the inspection is completed, the defective snow cakes are recorded. The snow cakes fall from the suction roller 33, and the orientation of the snow cakes changes. Through the transport of the conveyor mechanism, the back of the snow cakes faces directly below the back vision inspection mechanism. The back vision inspection mechanism can inspect the other side of the snow cakes. After the inspection is completed, the rejection mechanism can reject the unqualified snow cakes on the front or back. The belt quick-release mechanism can quickly disassemble the belt for easy cleaning. The automatic correction mechanism can correct the deviation of the conveyor belt 4 to prevent deviation during operation, which would cause errors in the snow cake inspection. The cleaning mechanism can clean the debris left by the snow cakes on the conveyor belt 4, keeping the surface of the conveyor belt 4 clean and improving the accuracy of snow cake inspection.

[0034] like Figure 6 As shown, the conveying mechanism includes a conveyor belt 4, a drive pulley 5, and a driven pulley 6. The conveyor belt 4 is mounted on the conveyor belt mounting frame 3. One end of the conveyor belt 4 is rotatably connected to the drive pulley 5, and the other end is rotatably connected to the driven pulley 6. The drive pulley 5 is driven by a driving component. The driving component drives the drive pulley 5 to rotate, so that the conveyor belt 4 starts working and the snow cakes can be transported.

[0035] like Figure 5 As shown, the rejection mechanism includes a rejection cylinder 7, a rejection connector 8, a rejection plate 9, and a rejection base 10. The bottom bolt of the rejection cylinder 7 is fixed to the rejection base 10, and its piston rod is fixed to the rejection connector 8. The rejection base 10 is bolted to one side of the equipment base 1. One end of the rejection plate 9 is rotatably connected to the rejection connector 8, and the other end is rotatably connected to the equipment base 1. The rejection plate 9 is inclined, with one end close to the conveyor belt 4.

[0036] The rejection base 10 provides corresponding support for the rejection cylinder 7. The rejection cylinder 7 transmits power to the rejection connector 8, which drives the rejection plate 9 to rotate, so that qualified snow cakes can pass through the rejection plate 9 to enter the next process, while unqualified snow cakes will be rejected.

[0037] like Figure 1 As shown, a rejection cavity 11 is provided in the equipment base 1, and a rejection ramp 12 is provided in the rejection cavity 11. The rejection cavity 11 and the rejection ramp 12 cooperate with the rejection plate 9 to allow unqualified snow cakes to enter the rejection cavity 11. The rejection ramp 12 allows the snow cakes to enter the rejection cavity 11 quickly.

[0038] like Figure 3 and Figure 4 As shown, the automatic belt correction mechanism includes a correction base 13, a correction cylinder 14, a correction push plate 15, a correction wheel 16, and a photoelectric sensor 17. The bottom of the correction base 13 is bolted to the equipment base 1, the correction cylinder 14 is bolted to one side of the correction base 13, the correction push plate 15 is mounted on the piston rod of the correction cylinder 14, the correction wheel 16 is rotatably connected to the top of the correction push plate 15 and is located inside the conveyor belt 4, and the photoelectric sensor 17 is mounted on the conveyor belt mounting frame 3.

[0039] The photoelectric sensors 17 on both sides can detect whether the conveyor belt 4 is deviated to the left or right. When the conveyor belt 4 deviates to the left, it triggers the photoelectric sensor 17 on the left. The correction cylinder 14 on the left drives the correction wheel 16 to press down, and the conveyor belt 4 deviates back to the right. Similarly, when the conveyor belt 4 deviates to the right, the correction cylinder 14 on the right moves and drives the correction wheel 16 to press down, and the conveyor belt 4 deviates back to the left.

[0040] like Figure 7 As shown, the cleaning mechanism includes a scraper 18, a pressure spring 19, a pressure connecting belt 20, and a cleaning mounting plate 21. The top of the scraper 18 abuts against the conveyor belt 4, and its bottom is fixedly connected to the pressure connecting belt 20. There are two cleaning mounting plates 21, which are bolted to both sides of the equipment base 1. One end of the pressure spring is fixed to the cleaning mounting plate, and the other end is connected to the pressure connecting belt.

[0041] The pressure spring 19 generates a force that tightens the pressure connecting belt 20. The pressure connecting belt 20 can drive the scraper 18 to rotate, so that the scraper 18 can abut against the conveyor belt 4. When the conveyor belt 4 is running, the debris on the surface is scraped off.

[0042] like Figure 1 and Figure 2As shown, the frontal vision inspection mechanism includes an upper crossbeam 22, a frontal mounting plate 23, a frontal camera 24, and an upper light source 25. The two ends of the upper crossbeam 22 are fixedly connected to the inner wall of the vision support 2. There are several frontal mounting plates 23, which are bolted to the upper crossbeam 22. There are several frontal cameras 24, one of which is bolted to the frontal mounting plate 23. The upper light source 25 is located below the frontal camera 24, and its two sides are connected to the inner wall of the vision support 2. The upper light source 25 illuminates the snow cake on the suction roller 33, so that the frontal camera 24 can more clearly capture the details of the front of the snow cake. The frontal mounting plate 23 provides support for the installation of the frontal camera 24.

[0043] like Figure 1 and Figure 2 As shown, the reverse visual inspection mechanism includes a lower crossbeam 26, a reverse mounting plate 27, a reverse camera 28, and a lower light source 29. The two ends of the lower crossbeam 26 are fixedly connected to the inner wall of the visual support 2. There are several reverse mounting plates 27, which are bolted to the lower crossbeam 26. There are several reverse cameras 28, one of which is bolted to the reverse mounting plate 27. The lower light source 29 is located below the reverse camera 28, and its two sides are connected to the inner wall of the visual support 2. The lower light source 29 illuminates the snow cakes on the conveyor belt 4, so that the reverse camera 28 can more clearly capture the details of the reverse side of the snow cakes. The reverse mounting plate 27 provides support for the installation of the reverse camera 28.

[0044] like Figure 6 As shown, the belt quick-release mechanism includes a drive cylinder 30, a quick-release mounting base 31, and a drive connector 32. The top bolt of the drive cylinder 30 is fixed to the quick-release mounting plate, and its piston rod bolt is fixed to the drive connector 32. The quick-release mounting base 31 is bolted to the lower crossbeam 26, and the drive connector 32 is rotatably connected to the driven pulley 6.

[0045] The drive cylinder 30 serves as a power source, transmitting power to the drive connector 32. The drive connector 32 can be pneumatically driven pulley 6, allowing the conveyor belt 4 to loosen, facilitating cleaning by personnel. The quick-release mounting base 31 provides corresponding support for the installation of the drive cylinder 30.

[0046] Working principle: During use, the suction roller 33 is located to the left of the front camera. The front camera 24 first visually inspects the snow cakes on the suction roller 33, checking the front side. After inspection, the snow cake falls from the suction roller 33 onto the conveyor belt 4, with the back side facing directly below the back camera 28. As it passes under the back camera 28, the back camera visually inspects the back side. The snow cake reaches the end of the conveyor belt 4. For qualified snow cakes, the rejection plate 9 connects them to the next process. For unqualified snow cakes, the rejection cylinder 7 drives the rejection plate 9 to rotate, causing the unqualified snow cake to enter the rejection cavity 11. Simultaneously, the pressure spring 19 exerts force to tighten the pressure connecting belt 20. The connecting belt 20 can drive the scraper 18 to rotate, so that the scraper 18 can abut against the conveyor belt 4. When the conveyor belt 4 is running, the surface debris is scraped off. During the processing, the conveyor belt 4 may deviate. The photoelectric sensors 17 on both sides can detect whether the conveyor belt 4 deviates to the left or right. When the conveyor belt 4 deviates to the left, it triggers the photoelectric sensor 17 on the left. The left correction cylinder 14 drives the correction wheel 16 to press down, and the conveyor belt 4 deviates back to the right. Similarly, when the conveyor belt 4 deviates to the right, the right correction cylinder 14 is activated, which drives the correction wheel 16 to press down, and the conveyor belt 4 deviates back to the left. When it is necessary to clean the conveyor belt 4, the power is transmitted to the drive joint 32 through the drive joint 32. The drive joint 32 can pull up the driven pulley 6, so that the conveyor belt 4 is loosened and easy to clean.

[0047] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. A visual inspection and anomaly removal device for naked rice crackers, characterized in that: The device includes a base (1) and a vision bracket (2). The bottom of the vision bracket (2) is located inside the base (1). A conveyor belt mounting frame (3) is provided on the base (1). A conveying mechanism is provided on the conveyor belt mounting frame (3). A rejection mechanism is provided on one side of the conveying mechanism. A set of automatic belt correction mechanisms for correcting the conveying mechanism is provided on both sides of the conveying mechanism. A cleaning mechanism for cleaning debris is provided on one side of the automatic belt correction mechanism. A front vision inspection mechanism for detecting the front of the snow cake is provided on the top of the vision bracket (2). A back vision inspection mechanism for detecting the back of the snow cake is provided at the bottom. A set of belt quick-release mechanisms is provided on both sides of the vision bracket (2).

2. The visual inspection and anomaly removal device for naked rice crackers according to claim 1, characterized in that: The conveying mechanism includes a conveyor belt (4), a drive pulley (5), and a driven pulley (6). The conveyor belt (4) is mounted on a conveyor belt mounting frame (3). One end of the conveyor belt (4) is rotatably connected to the drive pulley (5), and the other end is rotatably connected to the driven pulley (6). The drive pulley (5) is driven by a drive component.

3. The visual inspection and anomaly removal device for naked rice crackers according to claim 2, characterized in that: The rejection mechanism includes a rejection cylinder (7), a rejection connector (8), a rejection plate (9), and a rejection base (10). The bottom bolt of the rejection cylinder (7) is fixed to the rejection base (10), and its piston rod bolt is fixed to the rejection connector (8). The rejection base (10) is bolted to one side of the equipment base (1). One end of the rejection plate (9) is rotatably connected to the rejection connector (8), and the other end is rotatably connected to the equipment base (1). The rejection plate (9) is inclined, and one end is close to the conveyor belt (4).

4. The visual inspection and anomaly removal device for naked rice crackers according to claim 3, characterized in that: The equipment base (1) has a removal cavity (11) inside, and a removal slope (12) is provided inside the removal cavity (11).

5. The visual inspection and anomaly removal device for naked rice crackers according to claim 4, characterized in that: The automatic belt correction mechanism includes a correction base (13), a correction cylinder (14), a correction push plate (15), a correction wheel (16), and a photoelectric sensor (17). The bottom of the correction base (13) is bolted to the equipment base (1). The correction cylinder (14) is bolted to one side of the correction base (13). The correction push plate (15) is mounted on the piston rod of the correction cylinder (14). The correction wheel (16) is rotatably connected to the top of the correction push plate (15) and is located inside the conveyor belt (4). The photoelectric sensor (17) is mounted on the conveyor belt mounting frame (3).

6. The visual inspection and anomaly removal device for naked rice crackers according to claim 5, characterized in that: The cleaning mechanism includes a scraper (18), a pressure spring (19), a pressure connecting belt (20), and a cleaning mounting plate (21). The top of the scraper (18) abuts against the conveyor belt (4), and its bottom is fixedly connected to the pressure connecting belt (20). There are two cleaning mounting plates (21). The two cleaning mounting plates (21) are respectively bolted to both sides of the equipment base (1). One end of the pressure spring (19) is fixed to the cleaning mounting plate (21), and the other end is connected to the pressure connecting belt (20).

7. The visual inspection and anomaly removal device for naked rice crackers according to claim 6, characterized in that: The frontal visual inspection mechanism includes an upper crossbeam (22), a front mounting plate (23), a front camera (24), and an upper light source (25). The two ends of the upper crossbeam (22) are fixedly connected to the inner wall of the visual support (2). There are several front mounting plates (23), which are bolted to the upper crossbeam (22). There are several front cameras (24), one side of which is bolted to the front mounting plate (23). The upper light source (25) is located below the front camera (24), and its two sides are connected to the inner wall of the visual support (2).

8. The visual inspection and anomaly removal device for naked rice crackers according to claim 7, characterized in that: The reverse visual inspection mechanism includes a lower crossbeam (26), a reverse mounting plate (27), a reverse camera (28), and a lower light source (29). The two ends of the lower crossbeam (26) are fixedly connected to the inner wall of the visual support (2). There are several reverse mounting plates (27), which are bolted to the lower crossbeam (26). There are several reverse cameras (28), one side of which is bolted to the reverse mounting plate (27). The lower light source (29) is located below the reverse camera (28), and its two sides are connected to the inner wall of the visual support (2).

9. The visual inspection and anomaly removal device for naked rice crackers according to claim 8, characterized in that: The belt quick-release mechanism includes a drive cylinder (30), a quick-release mounting base (31), and a drive connector (32). The top bolt of the drive cylinder (30) is fixed to the quick-release mounting plate, and its piston rod bolt is fixed to the drive connector (32). The quick-release mounting base (31) is bolted to the lower crossbeam (26), and the drive connector (32) is rotatably connected to the driven pulley (6).