Nuclear power plant tunnel marine life cleaning device

Abstract

The present application relates to a kind of nuclear power plant tunnel marine organism cleaning device, including movable collection component, cleaning component, gather component and conveying component, cleaning component is respectively connected with the rotation of the two sides of collection component, for cleaning marine organism in tunnel, gather component is installed on cleaning component, for gathering marine organism cleaned by cleaning component, conveying component is installed in front of collection component.This device can adapt to the processing environment of marine organism with high viscosity and poor fluidity, has higher reliability, at the same time, has good ground self-adaptability, ensures that the device and tunnel wall have high adhesion, ensures that marine organism material is not extruded when conveying, reduces the situation of blocking.

Description

Technical Field

[0001] This invention relates to the field of tunnel cleaning, and more specifically, to a device for cleaning marine organisms in nuclear power plant tunnels. Background Technology

[0002] As seawater is introduced into the nuclear power plant through its intake tunnel, the tunnel walls accumulate a large number of marine organisms such as shellfish and barnacles over time. This reduces the tunnel's flow area, decreases its water transport capacity, and causes head loss. Therefore, it is necessary to clean up the attached marine organisms.

[0003] However, the traditional cleaning method is manual cleaning, which has problems such as poor working environment, low work efficiency and potential safety hazards. Now, relevant machines can also be used for cleaning, but there are still some problems. For example, existing machines cannot collect marine organisms on the curved surfaces on both sides of the tunnel, that is, they cannot completely clean the marine organisms in the tunnel. At the same time, when the machine deviates from its course in the tunnel, it may also damage the tunnel wall. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a device for cleaning marine organisms in nuclear power plant tunnels, addressing the aforementioned deficiencies of the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a marine organism cleaning device for nuclear power plant tunnels, comprising a movable collection component, a cleaning component, a gathering component and a conveying component;

[0006] The cleaning components are rotatably connected to both sides of the collecting components and are used to clean marine organisms in the tunnel;

[0007] The gathering component is installed on the cleaning component and is used to gather the marine organisms cleaned up by the cleaning component;

[0008] The conveying assembly is installed in front of the collecting assembly. The conveying assembly includes a conveyor frame, a rotating shaft, a conveying chain, and a chain rake. The conveyor frame is installed on the collecting assembly, the rotating shaft passes through the conveyor frame, the conveying chain is rotatably installed on the rotating shaft, and the chain rake is installed on the conveying chain to convey marine life to the collecting assembly.

[0009] In some embodiments, the collecting assembly includes a drive cylinder and a cylinder connecting frame, one end of which is connected to the drive cylinder and the other end of which is connected to the cleaning assembly, so that the collecting assembly can press the cleaning assembly against the tunnel wall or lift the cleaning assembly.

[0010] In some embodiments, the collection assembly further includes a host connection bracket on which the cleaning assembly is rotatably mounted.

[0011] In some embodiments, the cleaning assembly includes a cleaning bracket and guide wheels, the cleaning bracket being rotatably connected to the collection assembly;

[0012] The guide wheel is installed at the end of the cleaning bracket away from the collection assembly, and the guide wheel is in contact with the tunnel wall.

[0013] In some embodiments, a pressure sensor is provided on the guide wheel.

[0014] In some embodiments, the cleaning assembly further includes at least one floating scraper mounted on the cleaning support to remove marine life from the tunnel.

[0015] In some embodiments, the floating scraper component includes a mounting bracket, a cleaning scraper, and a floating scraper mounting bracket for mounting the cleaning scraper;

[0016] The fixing frame is a sleeve, and the fixing frame is installed on the cleaning bracket;

[0017] The floating scraper mounting bracket is slidably installed inside the fixed bracket, and the cleaning scraper is installed on the floating scraper mounting bracket.

[0018] In some embodiments, the floating scraper component further includes a compression spring and a limiting snap ring. One end of the compression spring is connected to the fixed frame, and the other end is connected to the floating scraper mounting frame. The limiting snap ring is mounted on the floating scraper mounting frame.

[0019] In some embodiments, the gathering assembly includes a roller and a spiral blade, the spiral blade being mounted on the roller, and the roller being mounted on the cleaning support to gather the marine organisms cleaned up by the cleaning assembly.

[0020] In some embodiments, the gathering assembly further includes a drive motor, which is tractively connected to the end of the roller away from the collecting assembly to drive the roller to rotate.

[0021] In some embodiments, the conveying assembly further includes a hydraulic motor, and the rotating shaft includes a drive shaft and a driven shaft;

[0022] The hydraulic motor is connected to the drive shaft to drive the drive shaft to rotate, which in turn drives the conveyor chain to rotate, thereby driving the driven shaft to rotate.

[0023] The implementation of this invention has the following beneficial effects: This nuclear power plant tunnel marine organism cleaning device can adapt to the processing environment of marine organisms with high viscosity and poor fluidity, and has higher reliability. At the same time, it has good ground adaptability, ensuring that the device has a high degree of fit with the tunnel wall, ensuring that the cleaned marine organism material is not squeezed during transportation, and reducing material blockage. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of a marine organism cleaning device for nuclear power plant tunnels in an embodiment of the present invention;

[0026] Figure 2 This is a front view of the marine organism cleaning device for nuclear power plant tunnels in an embodiment of the present invention;

[0027] Figure 3 This is a side view of the marine organism cleaning device for nuclear power plant tunnels in an embodiment of the present invention;

[0028] Figure 4 This is a top view of the marine organism cleaning device for nuclear power plant tunnels in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the conveying component of the marine organism cleaning device for nuclear power plant tunnels in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the floating scraper component of the marine organism cleaning device for nuclear power plant tunnels in an embodiment of the present invention;

[0031] Figure 7 This is a cross-sectional view of the floating scraper component of the marine organism cleaning device for nuclear power plant tunnels in an embodiment of the present invention. Detailed Implementation

[0032] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0033] Figures 1 to 7The present invention illustrates a marine organism cleaning device for nuclear power plant tunnels according to some embodiments. The device is used to clean and collect marine organisms from the tunnel walls. It includes a movable collection component 1, a cleaning component 2, a gathering component 3, and a conveying component 4. The cleaning component 2 is rotatably connected to both sides of the collection component 1. The gathering component 3 is mounted on the cleaning component 2. The conveying component 4 is mounted in front of the collection component 1. The collection component 1 is used to collect marine organisms cleaned from the tunnel. At the same time, the collection component 1 can move along the tunnel wall, so that the marine organism cleaning device for nuclear power plant tunnels cleans the tunnel walls it passes through. The cleaning component 2 is used to clean marine organisms in the tunnel. The gathering component 3 is used to gather the marine organisms cleaned by the cleaning component 2. The conveying component 4 is used to transport the gathered marine organisms to the collection component 1.

[0034] In some embodiments, the conveying assembly 4 includes a conveyor frame 41, a rotating shaft 42, a conveying chain 43, and a chain rake 44. The conveying assembly 4 is installed in front of the collecting assembly 1 and fixed in the collecting chamber of the collecting assembly 1 at a certain angle to the ground. The conveyor frame 41 is provided with a fixed support on each side and is installed on the collecting assembly 1 through the fixed support. The rotating shaft 42 passes through the conveyor frame 41 and the conveying chain 43 is rotatably installed on the rotating shaft 42. In this embodiment, four conveying chains 43 are arranged at intervals along the transverse direction of the conveyor frame 41 and are all rotatably installed on the rotating shaft 42. The chain rake 44 is installed on the conveying chain 43 and is used to convey the marine organisms gathered by the gathering assembly 3.

[0035] Specifically, when the marine organism cleaning device in the nuclear power plant tunnel is in operation, the collection component 1 applies a force to the cleaning component 2, pressing the cleaning component 2 against the tunnel wall, causing the cleaning component 2 to travel along the curved walls on both sides of the tunnel, while cleaning the marine organisms attached to the curved walls on both sides of the tunnel. The gathering component 3 gathers the cleaned marine organisms, making it easier for the conveying component 4 to transport these cleaned marine organisms to the collection component 1. At this time, the rotating shaft 42 of the conveying component 4 rotates, driving the conveying chain 43 installed on the rotating shaft 42 to rotate. Then, when the conveying chain 43 rotates, it drives the chain rake 44 to move. When the chain rake 44 moves, it moves the gathered marine organisms to the collection component 1, and finally the collection component 1 collects these marine organisms.

[0036] In addition, when the dimensions of the tunnel wall change significantly or the movement direction of the nuclear power plant tunnel marine organism cleaning device deviates significantly, the force exerted by the tunnel wall on the cleaning component 2 exceeds the force exerted by the collection component 1. Since the cleaning component 2 is rotatably connected to the collection component 1, the cleaning component 2 will rotate along both sides of the collection component 1 in a direction away from the tunnel wall to avoid damaging the tunnel wall and the device. Understandably, when cleaning work is not required, the cleaning component 2 can also be folded upwards to facilitate the movement of the nuclear power plant tunnel marine organism cleaning device.

[0037] In some embodiments, the collecting component 1 includes a drive cylinder 11 and a cylinder connecting frame 12. One end of the cylinder connecting frame 12 is connected to the drive cylinder 11, and the other end is connected to the cleaning component 2. This allows the collecting component 1 to press the cleaning component 2 against the tunnel wall or lift the cleaning component 2, because the tunnel wall can only be cleaned when the cleaning component 2 is pressed against it. The gathering component 3 moves along with the cleaning component 2, gathering the marine organisms it cleans up while the cleaning component 2 is cleaning. In this embodiment, the collecting component 1 is a tracked walking structure with four pillars, which can walk along the tunnel floor and adjust its height and angle, making it more convenient for the cleaning component 2 to clean the tunnel wall.

[0038] In some embodiments, the collection component 1 also includes a main unit connecting frame 13, which forms an angle with the vertical plane of the tunnel axis. This allows the cleaning component 2 to be rotatably mounted, so that the cleaning component 2 can rotate downwards under the action of the drive cylinder 11, pressing against the tunnel wall and cleaning it. When subjected to the force of the tunnel wall, the cleaning component 2 can rotate upwards along the main unit connecting frame 13, moving away from the tunnel wall, thereby protecting the marine organism cleaning device and the tunnel wall of the nuclear power plant tunnel.

[0039] In some embodiments, the cleaning component 2 includes a cleaning bracket 21 and a guide wheel 22. The cleaning bracket 21 is pulsatorically connected to the collection component 1. In this embodiment, the cleaning component 2 includes two cleaning brackets 21 and two guide wheels 22. One cleaning bracket 21 is longer and the other cleaning bracket 21 is shorter, so as to better clean the marine organisms on the tunnel wall. Specifically, each cleaning bracket 21 is rotatably connected to a hydraulic cylinder connecting frame 12, and each cleaning bracket 21 is rotatably mounted on a main unit connecting frame 13, located on both sides of the collection component 1, so that the cleaning bracket 21 can rotate along the main unit connecting frame 13. Therefore, the cleaning component 2 can press against the tunnel wall to clean it, or the cleaning component 2 can rotate upward along the main unit connecting frame 13 away from the tunnel wall.

[0040] Each guide wheel 22 is installed at the end of a cleaning bracket 21 away from the collection assembly 1. The guide wheel 22 contacts the tunnel wall and is used to guide the movement of the marine organism cleaning device in the nuclear power plant tunnel. Specifically, when the guide wheel 22 moves along the tunnel wall, it is subjected to the force of the tunnel wall. The reaction force generated by the guide wheel 22 to cope with this force can balance the steering force of the collection assembly 1, so that the collection assembly 1 moves along a predetermined direction, thereby guiding the movement of the marine organism cleaning device in the nuclear power plant tunnel. Therefore, in addition to cleaning marine organisms in the tunnel, the cleaning assembly 2 can also guide the movement of the marine organism cleaning device in the nuclear power plant tunnel, ensuring that the marine organism cleaning device in the nuclear power plant tunnel moves along a designated path, thereby better cleaning marine organisms in the tunnel. When the tunnel wall size is too large or the collection component 1 deflects too much, the force exerted by the tunnel wall on the guide wheel 22 will also be too large. When it exceeds the force applied by the drive cylinder 11, the drive cylinder 11 will drive the cleaning bracket 21 to rotate upward along the main unit connecting frame 13. The guide wheel 22 will then rise together with the cleaning bracket 21 to avoid interference. At this time, the drive cylinder 11 detects the abnormal displacement of the cleaning component 2 and then transmits this information to the control system of the collection component 1, so that the collection component 1 stops and then moves backward, readjusts its position or directly crosses this range before continuing to start operation, so as to avoid damage to the guide wheel 22.

[0041] Furthermore, in order to enable the guide wheel 22 to sense the force exerted on it by the tunnel wall, the guide wheel 22 is equipped with a pressure sensor to sense the force exerted on it by the tunnel wall, so that the guide wheel 22 can transmit relevant information such as the force to the collection component 1, and the collection component 1 can adjust the operating status of the device according to the received relevant information.

[0042] In some embodiments, the cleaning component 2 also includes one or more floating scraper components 23. The floating scraper components 23 are mounted on the cleaning bracket 21 and are used to clean marine organisms from the tunnel wall. To clean as much marine organism as possible from the tunnel wall, the floating brackets cover the contact area between the cleaning bracket 21 and the tunnel wall. Specifically, when the drive cylinder 11 drives the cleaning bracket 21 to press against the tunnel wall, the guide wheel 22 adheres to the tunnel wall, and the floating scraper components 23 simultaneously adhere to the tunnel wall. When the collection component 1 moves forward, the guide wheel 22 moves with it, and the floating scraper components 23 also move accordingly, simultaneously scraping the tunnel wall along the moving path to clean the marine organisms from the tunnel wall. When the collection component 1 is about to deviate... When moving to one side of the tunnel, the tendency to deviate increases the load on the guide wheel 22. The guide wheel 22 then applies a counterforce to the collection component 1 to balance the deviating force, allowing the collection component 1 to continue moving along the normal path. The guide wheel 22 also continues to move along the guide position, while the floating scraper 23 continues to scrape the tunnel wall it passes through during the movement. When the tunnel wall is cleaned and the device needs to be moved to another location, the chassis of the collection component 1 is first raised, and the cleaning component 2 rotates upward under the pull of the drive cylinder 11 to come into contact with the collection component 1. This reduces the overall external size of the device, making it easier for the nuclear power plant tunnel marine organism cleaning device to be moved or transported.

[0043] Specifically, in some embodiments, the floating scraper component 23 includes a fixed frame 231, a cleaning scraper 233, and a floating scraper mounting bracket 232. The fixed frame 231 is a sleeve with a built-in fixed frame. The fixed frame 231 is mounted on the cleaning bracket 21 through the fixed frame. The floating scraper mounting bracket 232 can be installed inside the sleeve of the fixed frame 231. The floating scraper mounting bracket 232 is cylindrical and is slidably installed inside the fixed frame 231 for mounting the cleaning scraper 233. The sliding scraper mounting bracket can slide up and down and rotate along the wall of the sleeve of the fixed frame 231, so that the cleaning scraper 233 installed thereon can adjust its position according to the tunnel wall, thereby better scraping the tunnel wall.

[0044] In some embodiments, the floating scraper component 23 also includes a compression spring 234 and a limiting snap ring 235. The compression spring 234 is installed on the fixed frame of the fixed bracket 231, with one end connected to the fixed frame of the fixed bracket 231 and the other end connected to the floating scraper mounting bracket 232, so that the floating scraper mounting bracket 232 is kept in an extended state, which facilitates the floating scraper mounting bracket 232 to slide up and down and rotate. For example, when the cleaning scraper 233 encounters an obstacle at the tunnel wall, the floating scraper mounting bracket 232 can slide upward, so that the cleaning scraper 233 avoids the obstacle, thereby preventing the cleaning scraper 233 from being damaged. At the same time, the limiting snap ring 235 is installed on the floating scraper mounting bracket 232 to prevent the floating scraper mounting bracket 232 from falling out of the fixed bracket 231, and to prevent the floating scraper component 23 from being subjected to excessive impact force from the tunnel wall and falling out of the fixed bracket 231 when cleaning the tunnel wall.

[0045] In some embodiments, the gathering component 3 includes a roller 31 and a spiral blade 32. The spiral blade 32 is mounted on the roller 31, and the roller 31 is mounted on the cleaning support 21. It is used to gather the marine organisms cleaned by the cleaning component 2. In this embodiment, each of the two cleaning supports 21 is equipped with a roller 31. The length of the roller 31 matches the length of the cleaning support 21. When the floating scraper 23 of the cleaning component 2 scrapes the tunnel wall, it scrapes off the marine organism material attached to the tunnel wall. When the collection component 1 moves forward, the floating scraper 23 continues to scrape the tunnel wall, and the material gradually accumulates. When the material accumulates to a certain height or the material itself is relatively high, the material is pushed to the middle by the thrust of the cleaning support 21. The higher upper layer of material is pushed to the conveying component 4 by the roller 31 and the spiral blade 32, and then transferred to the collection component 1 through the conveying component 4.

[0046] Furthermore, the spiral blades 32 on the rollers 31 have a uniform pitch, with larger diameter blades closer to the conveying assembly 4 and smaller diameter blades farther away from the conveying assembly 4. This improves the efficiency of the aggregating assembly 3 in pushing marine organisms to the conveying assembly 4. After entering the blades, the material becomes looser under the rotation of the blades, further avoiding material blockage. Meanwhile, the spiral blades 32 distributed on the rollers 31 on both sides of the collecting assembly 1 rotate in opposite directions. In order to drive the rollers 31 to rotate and transfer marine organisms to the conveying assembly 4, a drive motor 33 is installed on the end of each roller 31 away from the collecting assembly 1. The motors are connected to the end of the rollers 31 away from the collecting assembly 1 through a coupling, thereby driving the rollers 31 to rotate continuously. In addition, the rollers 31 can rotate forward under the action of the drive motor 33 to push the material to the conveying assembly 4, and can also rotate in reverse under the action of the drive motor 33 to clear material blockage in a timely manner.

[0047] To drive the conveying assembly 4 to transport the gathered marine organisms to the collection assembly 1, the conveying assembly 4 further includes a hydraulic motor 45 in some embodiments. The rotating shaft 42 includes a drive shaft 421 and a passive shaft 422. The drive shaft 421 is close to the collection assembly 1, and the passive shaft 422 is away from the collection assembly 1. In this embodiment, the hydraulic motor 45 is fixed in the collection chamber of the collection assembly 1 and connected to the drive shaft 421 to drive the drive shaft 421 to rotate. In turn, the drive shaft 421 drives the conveying chain 43 mounted on it to rotate, which facilitates the conveyor raker 44 to transport the marine organisms gathered by the collection assembly. At this time, the passive shaft 422 rotates with the conveying chain 43. In addition, the middle part of the conveyor raker 44 has a certain gap, which can pass over the structure of the conveyor frame 41. At the same time, the conveyor raker 44 extends out of the side plate of the conveyor frame 41, which allows the conveyor raker 44 to effectively transport the marine organisms gathered and pushed by the collection assembly 3, without causing the material to block the position of the conveying device 4, thus maintaining the stable operation of the conveying device 4.

[0048] When using this device to clean marine organisms from the tunnel wall, firstly, the hydraulic cylinder 11 drives the cleaning support 21 to rotate downwards through the hydraulic cylinder connecting frame 12, causing the cleaning component 2 to press against the tunnel wall. The guide wheel 22 and the floating scraper 23 then contact the tunnel wall. Next, the collection component 1 moves forward, and the guide wheel 22 moves forward accordingly, simultaneously guiding the movement of the collection component 1. When the movement direction of the collection component 1 deviates, it is corrected in time. During the movement of the guide wheel 22, the floating scraper 23 scrapes the tunnel wall it passes through. The scraped marine organism material is pushed by the roller 31 and the spiral blade 32 to the conveying component 4. At this time, the hydraulic motor 45 drives the drive shaft 421 to rotate, and the drive shaft 421 drives the conveying chain 43 to rotate. Then, the chain rake 44 follows the rotation of the conveying chain 43 and conveys the marine organism material pushed by the collection component 3 into the collection component 1, thereby cleaning and collecting marine organisms from the tunnel wall.

[0049] Understandably, the above-mentioned technical features can be used in any combination without restriction.

[0050] The above are merely embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A device for cleaning marine organisms in nuclear power plant tunnels, characterized in that, It includes a movable collection component (1), a cleaning component (2), a gathering component (3), and a conveying component (4); The cleaning component (2) is rotatably connected to both sides of the collecting component (1) and is used to clean marine organisms in the tunnel; The gathering component (3) is installed on the cleaning component (2) and is used to gather the marine organisms cleaned out by the cleaning component (2); The conveying assembly (4) is installed in front of the collecting assembly (1). The conveying assembly (4) includes a conveyor frame (41), a rotating shaft (42), a conveying chain (43), and a chain rake (44). The conveyor frame (41) is installed on the collecting assembly (1). The rotating shaft (42) passes through the conveyor frame (41). The conveying chain (43) is rotatably installed on the rotating shaft (42). The chain rake (44) is installed on the conveying chain (43) to convey marine organisms to the collecting assembly (1). The collection component (1) includes a drive cylinder (11) and a cylinder connecting frame (12). One end of the cylinder connecting frame (12) is connected to the drive cylinder (11), and the other end is connected to the cleaning component (2), so that the collection component (1) can press the cleaning component (2) against the tunnel wall or lift the cleaning component (2). The collection component (1) also includes a host connection frame (13), and the cleaning component (2) is rotatably mounted on the host connection frame (13); The cleaning assembly (2) includes two cleaning brackets (21) and two guide wheels (22). The cleaning brackets (21) are rotatably connected to the collection assembly (1). The guide wheels (22) are installed at the end of the cleaning brackets (21) away from the collection assembly (1) and the guide wheels (22) are in contact with the tunnel wall. Each of the cleaning brackets (21) is rotatably connected to a hydraulic cylinder connecting bracket 12, and each of the cleaning brackets (21) is rotatably mounted on a main unit connecting bracket (13), located on both sides of the collection assembly 1, so that the cleaning brackets (21) can rotate along the main unit connecting bracket (13), so that the cleaning assembly (2) can press against the tunnel wall to clean it, or the cleaning assembly (2) can rotate upward along the main unit connecting bracket (13) away from the tunnel wall.

2. The marine organism cleaning device for nuclear power plant tunnels according to claim 1, characterized in that, A pressure sensor is provided on the guide wheel (22).

3. The marine organism cleaning device for nuclear power plant tunnels according to claim 2, characterized in that, The cleaning assembly (2) also includes at least one floating scraper (23) mounted on the cleaning bracket (21) to clean marine life in the tunnel.

4. The marine organism cleaning device for nuclear power plant tunnels according to claim 3, characterized in that, The floating scraper component (23) includes a fixing frame (231), a cleaning scraper (233), and a floating scraper mounting frame (232) for mounting the cleaning scraper (233). The fixing frame (231) is a sleeve, and the fixing frame (231) is installed on the cleaning bracket (21); The floating scraper mounting bracket (232) is slidably mounted inside the fixed bracket (231), and the cleaning scraper (233) is mounted on the floating scraper mounting bracket (232).

5. The marine organism cleaning device for nuclear power plant tunnels according to claim 4, characterized in that, The floating scraper component (23) also includes a compression spring (234) and a limiting snap ring (235). One end of the compression spring (234) is connected to the fixed frame (231), and the other end is connected to the floating scraper mounting frame (232). The limiting snap ring (235) is mounted on the floating scraper mounting frame (232).

6. The marine organism cleaning device for nuclear power plant tunnels according to any one of claims 2 to 5, characterized in that, The gathering component (3) includes a roller (31) and a spiral blade (32), the spiral blade (32) being mounted on the roller (31), the roller (31) being mounted on the cleaning bracket (21) to gather the marine organisms cleaned by the cleaning component (2).

7. The marine organism cleaning device for nuclear power plant tunnels according to claim 6, characterized in that, The gathering component (3) also includes a drive motor (33), which is connected to the end of the roller (31) away from the collecting component (1) to drive the roller (31) to rotate.

8. The marine organism cleaning device for nuclear power plant tunnels according to claim 1, characterized in that, The conveying assembly (4) also includes a hydraulic motor (45), and the rotating shaft (42) includes a drive shaft (421) and a driven shaft (422). The hydraulic motor (45) is connected to the drive shaft (421) to drive the drive shaft (421) to rotate, thereby driving the conveyor chain (43) to rotate, and in turn driving the passive shaft (422) to rotate.

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