Pyrolysis furnace for waste tire treatment

Abstract

The utility model discloses a pyrolyzing furnace for waste tire treatment, which comprises a combustion tank, a rolling crushing mechanism, an anti-overloading mechanism and a support adjusting mechanism, the rolling crushing mechanism comprises a rolling motor, an output shaft, a rotating shaft, a rotating block, a leak hole plate and a rolling shaft, the anti-overloading mechanism comprises an anti-overloading pipe, an anti-overloading rod, a stretching-in frame, a stretching-in groove, a moving groove, a moving block, a supporting spring and a sliding rod, and the supporting adjusting mechanism comprises a sliding sleeve, a threaded plate, a supporting plate, a lead screw, rotating teeth and an outer tooth ring. Meanwhile, uniform distribution of materials is achieved, the pyrolysis efficiency is improved, in the operation process of the device, part damage caused by overload or abnormal conditions can be effectively prevented, the stability and safety of equipment operation are improved through linkage protection design, a supporting adjusting mechanism can adjust the pre-tightening force of a supporting spring according to needs, and the safety of equipment operation is improved. Therefore, different working environments and load requirements can be met.

Description

Technical Field

[0001] This utility model relates to the field of pyrolysis furnace technology, and more specifically, to a pyrolysis furnace for processing waste tires. Background Technology

[0002] The pyrolysis process of waste tires requires breaking them down into recyclable components such as oil, gas, and carbon black under high-temperature conditions. However, in existing technologies, due to the complex structure and tough texture of waste tires, and their typically monolithic shape or large fragments, heat cannot penetrate evenly into the interior of the material during pyrolysis. This uneven heat transfer and distribution often results in pyrolysis occurring only on the surface of the material, leading to incomplete decomposition within. The undecomposed substances remaining inside not only waste pyrolysis resources but also affect the purity and quality of subsequent products, increasing additional processing costs.

[0003] In actual operation, if the waste tires are too large or too hard, or if too much material accumulates inside the rolling pressing device, it may cause overload problems. Overload problems will make it difficult for the rolling pressing device to operate, and the rotating parts may jam or be damaged. If protective measures are not taken in time, the overload force will be directly transmitted to the rolling motor, causing serious consequences such as motor overheating and burnout. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a pyrolysis furnace for waste tire processing, which solves the technical problems mentioned in the background art, such as insufficient decomposition of materials, inability to roll the ash on the surface, and potential damage to the motor if overload occurs during rolling and pressing operation.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pyrolysis furnace for waste tire processing, comprising a combustion tank, a rolling crushing mechanism, an overload prevention mechanism, and a support and adjustment mechanism. The rolling crushing mechanism includes a rolling motor, an output shaft, a rotating shaft, a rotating block, a perforated plate, and a rolling shaft. The output shaft is installed at the output end of the rolling motor, the rotating block is installed at one end of the rotating shaft, and the perforated plate is installed at one end of the rotating block, with the perforated plate rotating within the combustion tank. The rolling shaft is installed on the inner wall of the combustion tank, with the side end of the rolling shaft aligned with the top of the perforated plate. The contact configuration includes an overload protection tube, an overload protection rod, an extension frame, an extension slot, a movement slot, a moving block, a support spring, and a sliding rod. The overload protection rod extends into the interior of the overload protection tube. The extension slot is installed on the side wall of the overload protection rod. The extension frame is slidably installed on the side wall of the overload protection tube. The movement slot is longitudinally located on the side wall of the overload protection tube. The moving block is slidably located within the movement slot. One end of the sliding rod is connected to one end of the support spring. The support spring pushes the moving block, and the moving block pushes the extension frame into the extension slot, thus linking the overload protection tube and the overload protection rod.

[0008] The present invention is further configured such that the support adjustment mechanism includes a sliding sleeve, a threaded plate, a support plate, a lead screw, a rotating tooth, and an external toothed ring. The sliding sleeve is slidably installed on the outer wall of the clamping pipe, and the top end of the sliding sleeve is connected to one end of the sliding rod. The threaded plate is installed on the side wall of the sliding sleeve, the support plate is fixedly installed on the side wall of the clamping pipe, the rotating tooth is rotatably installed on the support plate, and the external toothed ring is rotatably set at the upper limit on the outer wall of the overload protection pipe. The external toothed ring is meshed with the rotating tooth, the lead screw is installed at one end of the rotating tooth, and the threaded plate is installed on the lead screw. The threaded plate drives the sliding sleeve to move up and down, and the support spring is compressed or stretched by the sliding rod to adjust the preload of the support spring.

[0009] The present invention is further configured such that a support frame is installed at the bottom of the combustion tank, and a base plate is installed at the bottom end of the support frame, and a rolling motor is installed on the top end face of the base plate. The support frame and the base plate are designed as an integral structure, which enhances the stability of the equipment operation and can withstand the vibration and high temperature environment generated during the pyrolysis process.

[0010] The present invention is further configured such that a combustion assembly is fixedly installed on the side wall of the combustion tank, and a combustion tube is installed on the combustion assembly, with the outlet end of the combustion tube obliquely facing the top end of the perforated plate. The combustion assembly design ensures a continuous and stable heat source, avoids temperature fluctuations during the pyrolysis process, and improves the pyrolysis quality.

[0011] The present invention is further configured such that a flip-top cover is rotatably installed on the top end of the combustion tank, and an exhaust pipe is installed on the top end of the combustion tank. One end of the exhaust pipe is connected to an external gas treatment device. The connection between the exhaust pipe and the external gas treatment device allows the pyrolysis gas to be discharged and further processed, reducing environmental pollution and improving environmental protection performance.

[0012] The present invention is further configured such that the support frame is fixedly installed with a support bearing, and the output shaft is fitted on the support bearing to support the rotatable connection. A discharge hopper is installed on the side wall of the combustion tank. The design of the discharge hopper simplifies the residue cleaning process and improves the overall operating efficiency and convenience of the device.

[0013] The present invention is further provided that a connecting plate is installed at one end of the overload protection rod, and the connecting plate is fixedly connected to one end of the rotating shaft. The connection plate facilitates the stable connection between the overload protection rod and the rotating shaft.

[0014] The present invention is further configured such that one end of the overload protection tube is connected to one end of the output shaft, and the output shaft and the rotating shaft are connected by the overload protection mechanism. The overload protection mechanism realizes the linkage protection of the output shaft and the rotating shaft, thereby enhancing the reliability and durability of the equipment operation.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a pyrolysis furnace for waste tire processing, which has the following beneficial effects:

[0017] This invention features a rolling crushing mechanism that effectively crushes waste tires using a rolling motor and crushing design, while simultaneously achieving uniform material distribution and improving pyrolysis efficiency. Its structural design optimizes the handling of waste tires during pyrolysis and enhances the overall capacity of the pyrolysis device.

[0018] This utility model is equipped with an overload protection mechanism, which can effectively prevent component damage due to overload or abnormal conditions during device operation. The linkage protection design improves the stability and safety of equipment operation and extends the service life of the equipment.

[0019] This utility model is equipped with a support adjustment mechanism, which can adjust the preload of the support spring as needed to adapt to different working environments and load requirements. At the same time, the mechanism enhances the device's shock resistance and high-temperature stability, and improves the reliability and durability of the equipment operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the combustion tank in this utility model;

[0022] Figure 3 This is a schematic diagram of the rolling crushing mechanism in this utility model;

[0023] Figure 4This is a schematic diagram of the overload prevention mechanism and the support adjustment mechanism in this utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the overload prevention mechanism and the support adjustment mechanism in this utility model.

[0025] In the diagram: 1. Combustion tank; 2. Rolling motor; 3. Output shaft; 4. Rotating shaft; 5. Rotating block; 6. Perforated plate; 7. Rolling shaft; 8. Overload protection pipe; 9. Overload protection rod; 10. Extension frame; 11. Extension slot; 12. Moving slot; 13. Moving block; 14. Support spring; 15. Sliding rod; 16. Sliding sleeve; 17. Threaded plate; 18. Support plate; 19. Lead screw; 20. Rotating gear; 21. External gear ring; 22. Support frame; 23. Base plate; 24. Combustion assembly; 25. Combustion pipe; 26. Flip-top cover; 27. Exhaust pipe; 28. Support bearing; 29. ​​Discharge hopper; 30. Connecting plate. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5A pyrolysis furnace for waste tire processing includes a combustion tank 1, a rolling crushing mechanism, an overload prevention mechanism, and a support and adjustment mechanism. The rolling crushing mechanism includes a rolling motor 2, an output shaft 3, a rotating shaft 4, a rotating block 5, a perforated plate 6, and a rolling shaft 7. The output shaft 3 is installed at the output end of the rolling motor 2, the rotating block 5 is installed at one end of the rotating shaft 4, and the perforated plate 6 is installed at one end of the rotating block 5, with the perforated plate 6 rotating within the combustion tank 1. The rolling shaft 7 is installed on the inner wall of the combustion tank 1, with its side end contacting the top of the perforated plate 6. The overload prevention mechanism includes an overload prevention pipe 8 and an overload prevention rod 9. The system includes an extension frame 10, an extension groove 11, a movement groove 12, a moving block 13, a support spring 14, and a sliding rod 15. The overload protection rod 9 extends into the overload protection tube 8. The extension groove 11 is installed on the side wall of the overload protection rod 9. The extension frame 10 is slidably installed on the side wall of the overload protection tube 8. The movement groove 12 is longitudinally arranged on the side wall of the overload protection tube 8. The moving block 13 is slidably arranged in the movement groove 12. One end of the sliding rod 15 is connected to one end of the support spring 14. The support spring 14 pushes the moving block 13, and the moving block 13 pushes the extension frame 10 into the extension groove 11, so that the overload protection tube 8 and the overload protection rod 9 are linked.

[0030] In this embodiment, the main function of the rolling crushing mechanism is to crush waste tires for more efficient pyrolysis. The rolling motor 2 starts, providing power through its output shaft 3 to drive the rotating shaft 4 to rotate. The rotating shaft 4 is connected to the perforated plate 6 through a rotating block 5 at one end. The perforated plate 6 rotates inside the combustion tank 1 and is subject to certain limiting constraints. When the perforated plate 6 rotates, the waste tire fragments on its top are driven to slide and are screened through the perforations. The rolling shaft 7 is installed on the inner wall of the combustion tank 1 and contacts the top of the perforated plate 6. When the perforated plate 6 rotates, the waste tire fragments are crushed by the extrusion force between the perforated plate 6 and the rolling shaft 7, thereby achieving the purpose of further crushing the waste tires. During the rolling process, the combustion assembly 24 operates simultaneously, crushing the old tires. The rolling crushing mechanism also burns, increasing decomposition efficiency. When the rolling crushing mechanism is running, if an overload occurs, the reaction force on the rotating shaft 4 increases. This reaction force is transmitted to the overload protection tube 8 through the connecting plate 30 and the overload protection rod 9. The moving block 13 is pushed by the support spring 14 in the moving groove 12 on the side wall of the overload protection tube 8. When the overload force exceeds the preload force of the support spring 14, the moving block 13 pushes the extension frame 10 out of the extension groove 11, causing the overload protection tube 8 and the overload protection rod 9 to disengage, thereby cutting off the power transmission and protecting the output shaft 3 and the rolling motor 2 from overload damage. After the overload is released, the support spring 14 resets the moving block 13, the extension frame 10 re-enters the extension groove 11, and the linkage state of the overload protection tube 8 and the overload protection rod 9 is restored, and the device restarts.

[0031] The support adjustment mechanism includes a sliding sleeve 16, a threaded plate 17, a support plate 18, a lead screw 19, a rotating gear 20, and an external gear ring 21. The sliding sleeve 16 is slidably installed on the outer wall of the clamping pipe. The top end of the sliding sleeve 16 is connected to one end of the sliding rod 15. The threaded plate 17 is installed on the side wall of the sliding sleeve 16. The support plate 18 is fixedly installed on the side wall of the clamping pipe. The rotating gear 20 is rotatably installed on the support plate 18. The external gear ring 21 is set to rotate at the upper limit on the outer wall of the overload protection pipe 8. The external gear ring 21 is meshed with the rotating gear 20. The lead screw 19 is installed on one end of the rotating gear 20. The threaded plate 17 is installed on the lead screw 19. The threaded plate 17 drives the sliding sleeve 16 to move up and down. The sliding rod 15 is used to compress or stretch the support spring 14 to adjust the preload of the support spring 14.

[0032] In this embodiment, the function of the support adjustment mechanism is to adjust the preload of the support spring 14, thereby changing the overload trigger threshold of the overload protection mechanism. The external gear ring 21 drives the rotating gear 20 to rotate, causing the lead screw 19 to rotate and drive the threaded plate 17 to move. The movement of the threaded plate 17 causes the sliding sleeve 16 to slide up and down along the clamping tube, and the sliding rod 15 moves accordingly, thereby compressing or stretching the support spring 14. The compression or stretching of the support spring 14 changes its elastic potential energy, thereby adjusting the preload of the support spring 14. By increasing or decreasing the preload, the sensitivity of the overload protection mechanism can be adjusted to adapt to the processing needs of waste tire blocks of different hardness or size.

[0033] Please see Figures 1-5 As a supplementary embodiment of a waste tire pyrolysis furnace for processing, which includes a rolling crushing mechanism, an overload prevention mechanism, and a support adjustment mechanism: A support frame 22 is installed at the bottom of the combustion tank 1, and a base plate 23 is installed at the bottom end of the support frame 22. A rolling motor 2 is installed on the top end face of the base plate 23. A combustion assembly 24 is fixedly installed on the side wall of the combustion tank 1, and a combustion pipe 25 is installed on the combustion assembly 24. The outlet end of the combustion pipe 25 is obliquely aligned with the top end of the perforated plate 6. A flip-top cover 26 is rotatably installed on the top end of the combustion tank 1. An exhaust pipe 27 is installed at the top of the combustion tank 1, and one end of the exhaust pipe 27 is connected to an external gas treatment device. A support frame 22 is fixedly installed with a support bearing 28, and the output shaft 3 is installed on the support bearing 28 for support and rotational connection. A discharge hopper 29 is installed on the side wall of the combustion tank 1. A connecting plate 30 is installed at one end of the overload protection rod 9, and the connecting plate 30 is fixedly connected to one end of the rotating shaft 4. One end of the overload protection pipe 8 is connected to one end of the output shaft 3, and the output shaft 3 and the rotating shaft 4 are connected by the overload protection mechanism.

[0034] More specifically, waste tires are placed into the device through the top flip-top cover 26 of the combustion tank 1. After the flip-top cover 26 is closed, the combustion tank 1 starts to operate, and the rolling motor 2 starts, driving the perforated plate 6 and the rolling crushing shaft 7 of the rolling crushing mechanism to initially crush the waste tires. The crushed fragments fall into the lower part of the combustion tank 1 through the holes of the perforated plate 6. During the crushing process, the combustion component 24 is ignited, providing a high-temperature environment to the combustion tank 1 through the combustion pipe 25 to pyrolyze the waste tire fragments. During the pyrolysis process, the outlet end of the combustion pipe 25 is angled towards the top end of the perforated plate 6 to further assist in crushing the tire fragments and accelerate the pyrolysis. If an overload occurs, the overload protection mechanism will cut off the power transmission to protect the equipment from damage. After the overload is released, the device automatically resumes operation. The exhaust gas generated by pyrolysis is discharged through the exhaust pipe 27 at the top of the combustion tank 1 and enters the external gas treatment equipment for purification to avoid environmental pollution. After the pyrolysis is completed, the undecomposed residue is discharged through the discharge hopper 29 on the side wall of the combustion tank 1, completing the entire waste tire processing process.

[0035] In summary, during the use or operation of the overall equipment: When the rolling crushing mechanism is required, its main function is to crush waste tires for more efficient pyrolysis. The rolling motor 2 starts, providing power through its output shaft 3 to drive the rotating shaft 4 to rotate. The rotating shaft 4 is connected to the perforated plate 6 through a rotating block 5 at one end. The perforated plate 6 rotates inside the combustion tank 1 and is subject to certain limiting constraints. When the perforated plate 6 rotates, the waste tire fragments on its top are driven to slide and are screened through the perforations. The rolling shaft 7 is installed on the inner wall of the combustion tank 1 and contacts the top of the perforated plate 6. When the perforated plate 6 rotates, the waste tire fragments are crushed by the squeezing force between the perforated plate 6 and the rolling shaft 7, thereby achieving the purpose of further crushing the waste tires. During the rolling process, the combustion component 24 operates simultaneously, causing the old tires to burn as they are crushed. The burning ash from the rolling shaft 7 is drained through the holes and continues to burn. The rolling shaft 7 repeatedly crushes the tires, increasing the decomposition efficiency.

[0036] When the overload protection mechanism is in operation, if an overload occurs during the operation of the rolling crushing mechanism, the reaction force on the rotating shaft 4 increases. This reaction force is transmitted to the overload protection tube 8 through the connecting plate 30 and the overload protection rod 9. The moving block 13 is pushed by the support spring 14 in the moving groove 12 on the side wall of the overload protection tube 8. When the overload force exceeds the preload force of the support spring 14, the moving block 13 pushes the extension frame 10 out of the extension groove 11, causing the overload protection tube 8 and the overload protection rod 9 to disengage, thereby cutting off the power transmission and protecting the output shaft 3 and the rolling motor 2 from overload damage. After the overload is released, the support spring 14 resets the moving block 13, the extension frame 10 re-enters the extension groove 11, and the linkage state of the overload protection tube 8 and the overload protection rod 9 is restored, and the device restarts.

[0037] When the support adjustment mechanism is in operation, its function is to adjust the preload of the support spring 14, thereby changing the overload trigger threshold of the overload protection mechanism. The external gear ring 21 drives the rotating gear 20 to rotate, causing the lead screw 19 to rotate and drive the threaded plate 17 to move. The movement of the threaded plate 17 causes the sliding sleeve 16 to slide up and down along the clamping pipe, and the sliding rod 15 moves accordingly, thereby compressing or stretching the support spring 14. The compression or stretching of the support spring 14 changes its elastic potential energy, thereby adjusting the preload of the support spring 14. By increasing or decreasing the preload, the sensitivity of the overload protection mechanism can be adjusted to adapt to the processing needs of waste tire blocks of different hardness or size.

[0038] Waste tires are placed into the device through the top flip-top cover 26 of the combustion tank 1. After the flip-top cover 26 is closed, the combustion tank 1 starts to operate, and the rolling motor 2 starts, driving the perforated plate 6 and the rolling crushing shaft 7 of the rolling crushing mechanism to initially crush the waste tires. The crushed fragments fall into the lower part of the combustion tank 1 through the holes of the perforated plate 6. During the crushing process, the combustion component 24 is ignited, providing a high-temperature environment to the combustion tank 1 through the combustion pipe 25 to pyrolyze the waste tire fragments. During the pyrolysis process, the outlet end of the combustion pipe 25 is angled towards the top end of the perforated plate 6 to further assist in crushing the tire fragments and accelerate the pyrolysis. If an overload occurs, the overload protection mechanism will cut off the power transmission to protect the equipment from damage. After the overload is released, the device automatically resumes operation. The exhaust gas generated by pyrolysis is discharged through the exhaust pipe 27 at the top of the combustion tank 1 and enters the external gas treatment equipment for purification to avoid environmental pollution. After the pyrolysis is completed, the undecomposed residue is discharged through the discharge hopper 29 on the side wall of the combustion tank 1, completing the entire waste tire processing process.

[0039] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pyrolysis furnace for waste tire processing, comprising a combustion tank (1), a rolling crushing mechanism, an overload prevention mechanism, and a support and adjustment mechanism, characterized in that: The rolling crushing mechanism includes a rolling motor (2), an output shaft (3), a rotating shaft (4), a rotating block (5), a perforated plate (6), and a rolling shaft (7). The output shaft (3) is installed at the output end of the rolling motor (2), the rotating block (5) is installed at one end of the rotating shaft (4), the perforated plate (6) is installed at one end of the rotating block (5), and the perforated plate (6) rotates within the combustion tank (1). The rolling shaft (7) is installed on the inner wall of the combustion tank (1), and the side end of the rolling shaft (7) is in contact with the top of the perforated plate (6). The overload protection mechanism includes an overload protection pipe (8). The components include an overload protection rod (9), an insertion frame (10), an insertion groove (11), a movement groove (12), a moving block (13), a support spring (14), and a sliding rod (15). The overload protection rod (9) extends into the interior of the overload protection tube (8). The insertion groove (11) is installed on the side wall of the overload protection rod (9). The insertion frame (10) is slidably installed on the side wall of the overload protection tube (8). The movement groove (12) is longitudinally set on the side wall of the overload protection tube (8). The moving block (13) is slidably set in the movement groove (12). One end of the sliding rod (15) is connected to one end of the support spring (14).

2. The pyrolysis furnace for waste tire processing according to claim 1, characterized in that: The support adjustment mechanism includes a sliding sleeve (16), a threaded plate (17), a support plate (18), a lead screw (19), a rotating gear (20), and an external gear ring (21). The sliding sleeve (16) is slidably installed on the outer wall of the clamping pipe. The top end of the sliding sleeve (16) is connected to one end of the sliding rod (15). The threaded plate (17) is installed on the side wall of the sliding sleeve (16). The support plate (18) is fixedly installed on the side wall of the clamping pipe. The rotating gear (20) is rotatably installed on the support plate (18). The external gear ring (21) is set to rotate at the upper limit on the outer wall of the overload protection pipe (8). The external gear ring (21) is meshed with the rotating gear (20). The lead screw (19) is installed on one end of the rotating gear (20). The threaded plate (17) is installed on the lead screw (19).

3. The pyrolysis furnace for waste tire processing according to claim 1, characterized in that: The bottom of the combustion tank (1) is provided with a support frame (22), and the bottom end of the support frame (22) is provided with a base plate (23), and the rolling motor (2) is installed on the top end face of the base plate (23).

4. The pyrolysis furnace for waste tire processing according to claim 1, characterized in that: A combustion assembly (24) is fixedly installed on the side wall of the combustion tank (1), and a combustion pipe (25) is installed on the combustion assembly (24), with the outlet end of the combustion pipe (25) obliquely facing the top end of the perforated plate (6).

5. The pyrolysis furnace for waste tire processing according to claim 1, characterized in that: The combustion tank (1) is rotatably fitted with a flip cover (26) at the top end, and an exhaust pipe (27) is installed at the top end of the combustion tank (1), with one end of the exhaust pipe (27) connected to an external gas treatment device.

6. The pyrolysis furnace for waste tire processing according to claim 3, characterized in that: The support frame (22) is fixedly installed with a support bearing (28), and the output shaft (3) is installed on the support bearing (28) to support the rotatable connection. The side wall of the combustion tank (1) is equipped with a discharge hopper (29).

7. The pyrolysis furnace for waste tire processing according to claim 1, characterized in that: One end of the overload protection rod (9) is equipped with a connecting plate (30), and the connecting plate (30) is fixedly connected to one end of the rotating shaft (4).

8. The pyrolysis furnace for waste tire processing according to claim 1, characterized in that: One end of the overload protection tube (8) is connected to one end of the output shaft (3), and the output shaft (3) is connected to the rotating shaft (4) through the overload protection mechanism.

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