Crack filling device for road construction

Abstract

The utility model discloses a crack filling device for road construction, which belongs to the technical field of road engineering and comprises a frame, a self-adjusting rotary filling component and a lifting cleaning component. The self-adjusting rotating filling assembly and the lifting sweeping assembly are both installed on the frame. The self-adjusting rotary filling assembly comprises a filling feeding component used for conveying materials for crack filling and an adjusting steering component used for driving the filling feeding component to rotate so as to fill different positions. The lifting sweeping assembly comprises a sweeping component used for sweeping the ground before filling and a lifting component used for driving the sweeping component to ascend and descend. By means of the mode, the lifting component drives the filling and feeding component and the sweeping component to be attached to the ground, the sweeping effect of the sweeping component is improved, meanwhile, the filling and feeding component is attached to the ground, materials can be flattened during filling, material waste is reduced, and the filling effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of road engineering technology, specifically to a crack filling device for road construction. Background Technology

[0002] Cracks are one of the most common, most likely to occur, and earliest-causing defects among various types of asphalt pavement damage. If cracks are not repaired in time, rainwater will seep into the pavement structure layer, which will then evolve into more serious defects such as spalling, loosening, and potholes, thereby greatly reducing the service life of the road. Currently, a common method is to pour heated asphalt into the cracks for filling and repair.

[0003] For example, Chinese patent application CN222205978U discloses a road crack filling device for highway construction, which includes a base plate, two sets of wheel assemblies on the top of the base plate, a pusher fixedly installed on the top left side of the base plate, a motor fixedly installed on the top left side of the base plate, a storage tank fixedly installed on the top right side of the base plate, and a conveyor for conveying raw materials inside the storage tank fixedly installed on the side wall of the storage tank.

[0004] However, when using this road crack filling device during highway construction, it is necessary to continuously move the hand-pushed frame according to the location of the crack so that the rectangular frame covers the crack, which is difficult and inefficient.

[0005] Based on this, the present invention designs a crack filling device for road construction to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a crack filling device for road construction.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A crack filling device for road construction includes a frame, and further includes a self-adjusting rotating filling component and a lifting and sweeping component; both the self-adjusting rotating filling component and the lifting and sweeping component are mounted on the frame;

[0009] The self-adjusting rotating filling assembly includes a filling feed component for conveying material to fill cracks and an adjusting steering component for driving the filling feed component to rotate to fill different positions. Both the filling feed component and the adjusting steering component are mounted on the frame, and the filling feed component is connected to the adjusting steering component.

[0010] The lifting and sweeping assembly includes a sweeping component for sweeping the ground before filling and a lifting component for driving the sweeping component to rise and fall. The lifting component synchronously controls the contact state between the filling feed component and the ground. The lifting component is installed on the frame and connected to the filling feed component. The sweeping component is connected to the lifting component.

[0011] Furthermore, the frame includes a mounting bracket, casters, and hooks. Multiple casters are provided and fixedly installed at the bottom of the mounting bracket. The hooks are fixedly installed on the right side of the mounting bracket for connection with mobile equipment. The mounting bracket is equipped with a filling and feeding component, an adjusting and steering component, and a lifting component.

[0012] Furthermore, the filling and feeding component includes a storage bin, a steering pipe, a conveying pipe, a conveying pump, and a buffer structure. A support plate is fixedly installed on the inner side of the mounting frame. The storage bin is fixedly installed on the top of the mounting frame. The steering pipe is rotatably installed on the support plate of the mounting frame. The top of the steering pipe is connected to and rotatably connected to the discharge end of the storage bin. The bottom of the steering pipe is connected to and fixedly connected to one end of the conveying pipe. The other end of the conveying pipe passes through the support plate of the mounting frame and faces downward. The other end of the conveying pipe is slidably connected to the support plate of the mounting frame. The conveying pump is fixedly installed on the conveying pipe. An arc-shaped groove is provided on the mounting frame to cooperate with the sliding of the other end of the conveying pipe. A buffer structure is installed on the outer side of the conveying pipe facing the ground. The bottom of the steering pipe is connected to the adjusting steering component.

[0013] Furthermore, the buffer structure includes a ground-mounted tube, an adjusting tube, and a spring. The adjusting tube is sleeved on the outside of the end of the conveying tube facing the ground and is slidably connected to the conveying tube. The ground-mounted tube is sleeved on the outside of the end of the conveying tube facing the ground and is slidably connected to the conveying tube. The spring is sleeved on the outside of the ground-mounted tube, and both ends of the spring are fixedly connected to the ground-mounted tube and the adjusting tube, respectively. The top of the adjusting tube is connected to the lifting component.

[0014] Furthermore, the steering adjustment component includes a motor, a drive gear, and a semi-arc gear disc. The motor is fixedly mounted on the support plate of the mounting bracket, and the output end of the motor is fixedly connected to the drive gear. The drive gear is rotatably mounted on the support plate of the mounting bracket, and the drive gear meshes with the semi-arc gear disc. The semi-arc gear disc is fixedly mounted on the bottom outer side of the steering tube.

[0015] Furthermore, the lifting component includes a linear module, a lifting plate, and sliding rods. The linear module is fixedly installed at the bottom of the support plate of the mounting frame. The output end of the linear module is fixedly connected to one end of the lifting plate. The linear module is positioned vertically. The lifting plate is arc-shaped near the adjusting tube. The arc surface of the lifting plate has a sliding groove for sliding with the sliding rods. There are two sliding rods. One end of each sliding rod is fixedly installed at the top of the adjusting tube. The other ends of each sliding rod are inserted into the sliding grooves for limited sliding connection. The bottom of the lifting plate is connected to the cleaning component.

[0016] Furthermore, the lifting component also includes two electric telescopic rods, which are fixedly installed at the bottom of the support plate of the mounting frame. The output ends of the two electric telescopic rods are fixedly connected to the top of the lifting plate near the adjusting tube.

[0017] Furthermore, the cleaning component includes a second motor, a transmission structure, a cleaning disc, and a gear set. The second motor is fixedly installed at the bottom of the lifting plate away from the adjusting tube. There are two cleaning discs symmetrically arranged front and back. The gear set consists of two meshing spur gears symmetrically arranged front and back. Both cleaning discs are rotatably installed at the bottom center of the lifting plate. The two cleaning discs are respectively fixedly connected to the bottom of the two spur gears of the gear set. The output end of the second motor is connected to one of the cleaning discs through the transmission structure. Brush bristles are fixedly installed at the bottom of the cleaning disc.

[0018] Compared with the prior art, the advantages of this utility model are as follows:

[0019] 1. This utility model uses a lifting component to drive the filling and feeding component and the sweeping component to fit against the ground, which improves the sweeping effect of the sweeping component. At the same time, when the filling and feeding component is in contact with the ground, it can smooth the material during filling, reduce material waste and improve the filling effect. By adjusting the setting of the steering component, the filling and feeding component is driven to rotate according to the position of the crack, which enables automatic filling of cracks over a large area without the need for manual real-time adjustment according to the position of the crack, thus improving the filling efficiency.

[0020] 2. This utility model uses a high-precision visual inspection camera in conjunction with a motor to control the rotation of the steering pipe and the conveying pipe, which enables the material to be automatically transported to the designated crack location, improving work efficiency and reducing work difficulty. At the same time, the cleaning component allows the ground to be simply cleaned before filling, avoiding the mixing of more impurities into the material and affecting the filling effect. The lifting component drives the lifting of the cleaning component and the filling feeding component, which can be lifted off the ground for easy transfer during non-working hours. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This utility model relates to a three-dimensional crack filling device for road construction. Figure 1 ;

[0023] Figure 2 This utility model relates to a three-dimensional crack filling device for road construction. Figure 2 ;

[0024] Figure 3 This is a perspective view of the self-adjusting rotation filling component of this utility model;

[0025] Figure 4 This is a partial sectional perspective view of the filling and feeding component of this utility model;

[0026] Figure 5 The three-dimensional lifting and sweeping assembly of this utility model Figure 1 ;

[0027] Figure 6 The three-dimensional lifting and sweeping assembly of this utility model Figure 2 .

[0028] The labels in the diagram represent:

[0029] 1. Frame; 11. Mounting bracket; 12. Casters; 13. Hook; 2. Self-adjusting rotating filling assembly; 21. Filling and feeding component; 211. Storage bin; 212. Steering pipe; 213. Conveying pipe; 214. Conveying pump; 215. Ground-mounted pipe; 216. Adjusting pipe; 217. Spring; 22. Adjusting steering component; 221. Motor 1; 222. Drive gear; 223. Semi-arc gear disc; 3. Lifting and sweeping assembly; 31. Lifting component; 311. Linear module; 312. Electric telescopic rod; 313. Lifting plate; 314. Slide bar; 32. Sweeping component; 321. Motor 2; 322. Transmission structure; 323. Sweeping disc; 324. Gear set. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-6 A crack filling device for road construction includes a frame 1, a self-adjusting rotating filling component 2, and a lifting and sweeping component 3; the self-adjusting rotating filling component 2 and the lifting and sweeping component 3 are both installed on the frame 1.

[0032] The self-adjusting rotating filling assembly 2 includes a filling feed component 21 for conveying material to fill cracks and an adjusting steering component 22 for driving the filling feed component 21 to rotate to fill different positions. Both the filling feed component 21 and the adjusting steering component 22 are mounted on the frame 1, and the filling feed component 21 is connected to the adjusting steering component 22.

[0033] The lifting and sweeping assembly 3 includes a sweeping component 32 for sweeping the ground before filling and a lifting component 31 for driving the sweeping component 32 to rise and fall. The lifting component 31 synchronously controls the contact state between the filling feed component 21 and the ground. The lifting component 31 is mounted on the frame 1 and connected to the filling feed component 21. The sweeping component 32 is connected to the lifting component 31.

[0034] When the road construction crack filling device is in normal use, the frame 1 is attached to the rear of the mobile equipment, and the material is poured into the filling feed component 21. The lifting component 31 drives the sweeping component 32 to move downward, so that the sweeping component 32 is in contact with the ground. At the same time, the filling feed component 21 moves with the lifting component 31 and is in contact with the ground. When the mobile equipment moves the frame 1, the sweeping component 32 is started to perform a simple sweep of the ground that needs to be filled. The steering component 22 is adjusted to drive the filling feed component 21 to rotate according to the location of the crack in the road surface, so that the filling feed component 21 moves to the corresponding crack position. The filling feed component 21 delivers the material to the crack in the ground for filling.

[0035] In this invention, the lifting component 31 drives the filling and feeding component 21 and the sweeping component 32 to fit against the ground, improving the sweeping effect of the sweeping component 32. At the same time, the filling and feeding component 21 can smooth the material when filling, reducing material waste and improving the filling effect. By adjusting the setting of the steering component 22, the filling and feeding component 21 is driven to rotate according to the crack position, so that cracks in a large area can be filled automatically without the need for manual real-time adjustment according to the crack position, thus improving the filling efficiency.

[0036] In some embodiments, the frame 1 includes a mounting bracket 11, casters 12 and hooks 13. Multiple casters 12 are provided and are fixedly installed at the bottom of the mounting bracket 11. The hooks 13 are fixedly installed on the right side of the mounting bracket 11 for connection with mobile equipment. The mounting bracket 11 is equipped with a filling and feeding component 21, an adjusting and steering component 22 and a lifting component 31.

[0037] In some embodiments, the filling and feeding component 21 includes a storage bin 211, a steering pipe 212, a conveying pipe 213, a conveying pump 214, and a buffer structure. A support plate is fixedly installed on the inner side of the mounting frame 11. The storage bin 211 is fixedly installed on the top of the mounting frame 11. The steering pipe 212 is rotatably installed on the support plate of the mounting frame 11. The top of the steering pipe 212 is connected to and rotatably connected to the discharge end of the storage bin 211. The bottom of the steering pipe 212 is connected to and fixedly connected to one end of the conveying pipe 213. The other end of the conveying pipe 213 passes through the support plate of the mounting frame 11 and faces downward. The other end of the conveying pipe 213 is slidably connected to the support plate of the mounting frame 11. The conveying pump 214 is fixedly installed on the conveying pipe 213 for driving material conveying. An arc-shaped groove is provided on the mounting frame 11 to slide with the other end of the conveying pipe 213. A buffer structure is installed on the outer side of the end of the conveying pipe 213 facing the ground. The bottom of the steering pipe 212 is connected to the adjusting steering component 22.

[0038] The buffer structure includes a ground-mounted tube 215, an adjusting tube 216, and a spring 217. The adjusting tube 216 is sleeved on the outside of the end of the conveying tube 213 facing the ground and is slidably connected to the conveying tube 213. The ground-mounted tube 215 is sleeved on the outside of the end of the conveying tube 213 facing the ground and is slidably connected to the conveying tube 213. The spring 217 is sleeved on the outside of the ground-mounted tube 215. The two ends of the spring 217 are fixedly connected to the ground-mounted tube 215 and the adjusting tube 216, respectively. The top of the adjusting tube 216 is connected to the lifting component 31.

[0039] In some embodiments, the steering adjustment component 22 includes a motor 221, a drive gear 222, and a semi-arc gear 223. The motor 221 is fixedly mounted on the support plate of the mounting bracket 11. The output end of the motor 221 is fixedly connected to the drive gear 222. The drive gear 222 is rotatably mounted on the support plate of the mounting bracket 11. The drive gear 222 is meshed with the semi-arc gear 223. The semi-arc gear 223 is fixedly mounted on the bottom outer side of the steering tube 212.

[0040] In some embodiments, the lifting component 31 includes a linear module 311, a lifting plate 313, and a slide rod 314. The linear module 311 is fixedly installed at the bottom of the support plate of the mounting bracket 11. The output end of the linear module 311 is fixedly connected to one end of the lifting plate 313. The linear module 311 is arranged vertically. The lifting plate 313 is arc-shaped near the adjusting tube 216. The arc surface of the lifting plate 313 is provided with a sliding groove that cooperates with the slide rod 314. There are two slide rods 314. One end of each slide rod 314 is fixedly installed at the top of the adjusting tube 216. The other end of each slide rod 314 is inserted into the sliding groove and slidably connected to the lifting plate 313. The bottom of the lifting plate 313 is connected to the cleaning component 32.

[0041] Preferably, the lifting component 31 further includes an electric telescopic rod 312. Two electric telescopic rods 312 are provided. The two electric telescopic rods 312 are fixedly installed at the bottom of the support plate of the mounting frame 11. The output ends of the two electric telescopic rods 312 are fixedly connected to the top of the lifting plate 313 near the adjusting tube 216.

[0042] In some embodiments, the cleaning component 32 includes a second motor 321, a transmission structure 322, a cleaning disc 323, and a gear set 324. The second motor 321 is fixedly installed at the bottom of the lifting plate 313 away from the adjusting tube 216. Two cleaning discs 323 are symmetrically arranged front and back. The gear set 324 consists of two meshing spur gears, which are symmetrically arranged front and back. Both cleaning discs 323 are rotatably installed at the bottom center of the lifting plate 313. The two cleaning discs 323 are respectively fixedly connected to the bottom of the two spur gears of the gear set 324. The output end of the second motor 321 is connected to one of the cleaning discs 323 through the transmission structure 322. Brush bristles are fixedly provided at the bottom of the cleaning disc 323.

[0043] The transmission structure 322 consists of two synchronous pulleys and a synchronous belt. The two synchronous pulleys are fixedly connected to the output end of the motor 321 and one of the cleaning discs 323, respectively. The synchronous belt is sleeved on the outside of the two synchronous pulleys for transmission.

[0044] In some embodiments, a high-precision visual inspection camera is fixedly installed at the bottom of the mounting bracket 11. The high-precision visual inspection camera acquires road surface images in real time and works in deep collaboration with the road crack detection system. When the camera captures a crack image, it immediately transmits the data to the road crack detection system. The road crack detection system analyzes the data according to a preset algorithm and automatically triggers commands to control the motor 221 to run. Both the high-precision visual inspection camera and the road crack detection system are mature technologies in the field and have been widely used in road defect identification scenarios, such as the end-to-end road crack detection system disclosed in Chinese patent application CN113744205B.

[0045] When the road construction crack filling device is in normal use, it is attached to the rear of the mobile equipment via hook 13. Material is poured into the storage bin 211, and the linear module 311 is activated. The linear module 311, in conjunction with the electric telescopic rod 312, moves the lifting plate 313 downwards. The lifting plate 313 moves the sweeping disc 323 downwards to contact the ground. Simultaneously, the lifting plate 313 moves the sliding rod 314, adjusting pipe 216, and ground-contact pipe 215 downwards, ensuring the bottom of the ground-contact pipe 215 contacts the ground. Then, the second motor 321 is activated. The second motor 321, through the transmission structure 322, drives one of the sweeping discs 323 to rotate synchronously. This sweeping disc 323 corresponds to a spur gear in the gear set 324, which rotates synchronously, driving the other spur gear to rotate in the opposite direction. Simultaneously, it drives the other sweeping disc 323 to rotate in the opposite direction. The two sweeping discs rotate in tandem. The brush bristles at the bottom of the sweeping disc 323 clean the ground. The mobile device moves the mounting frame 11 via the universal wheels 12. At the same time, a high-precision visual inspection camera detects the location of ground cracks. In conjunction with the road crack detection system, the control motor 221 drives the drive gear 222, the semi-arc gear disc 223, and the steering tube 212 to rotate. The steering tube 212 rotates along the arc groove on the mounting frame 11 to the designated position. Then, the conveying pump 214 is started to transport the material from the storage bin 211 through the steering tube 212 and the conveying tube 213 to the ground cracks for filling. When the ground is uneven, the ground-adhering tube 215 compresses the spring 217 under the action of the ground, so that the ground-adhering tube 215 keeps in contact with the ground. The ground-adhering tube 215 smooths the material at the cracks, avoiding excess material overflow and waste.

[0046] In this invention, a high-precision visual inspection camera, in conjunction with motor 221, controls the rotation of steering pipe 212 and conveying pipe 213, enabling automated material delivery to the designated crack location, thus improving work efficiency and reducing work difficulty. Meanwhile, the cleaning component 32 allows for simple cleaning of the ground before filling, preventing excessive impurities from being mixed into the material and affecting the filling effect. The lifting component 31 drives the lifting of the cleaning component 32 and the filling feed component 21, allowing them to be removed from the ground for easy transport during non-working hours.

[0047] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A crack filling device for road construction comprising a frame (1), characterized in that: It also includes a self-adjusting rotating filling assembly (2) and a lifting cleaning assembly (3); both the self-adjusting rotating filling assembly (2) and the lifting cleaning assembly (3) are mounted on the frame (1); The self-adjusting rotating filling assembly (2) includes a filling feed component (21) for conveying materials to fill cracks and an adjusting steering component (22) for driving the filling feed component (21) to rotate to fill different positions. The filling feed component (21) and the adjusting steering component (22) are both mounted on the frame (1), and the filling feed component (21) is connected to the adjusting steering component (22). The lifting and sweeping assembly (3) includes a sweeping component (32) for sweeping the ground before filling and a lifting component (31) for driving the sweeping component (32) to rise and fall. The lifting component (31) synchronously controls the contact state between the filling feed component (21) and the ground. The lifting component (31) is installed on the frame (1) and connected to the filling feed component (21). The sweeping component (32) is connected to the lifting component (31).

2. The crack pouring device for road construction according to claim 1, characterized by The frame (1) includes a mounting bracket (11), casters (12) and hooks (13). Multiple casters (12) are provided and are fixedly installed at the bottom of the mounting bracket (11). The hooks (13) are fixedly installed on the right side of the mounting bracket (11) for connection with mobile equipment. The mounting bracket (11) is equipped with a filling feed component (21), an adjusting steering component (22) and a lifting component (31).

3. The crack pouring device for road construction according to claim 2, characterized by, The filling and feeding component (21) includes a storage bin (211), a diverting pipe (212), a conveying pipe (213), a conveying pump (214), and a buffer structure. A support plate is fixedly installed on the inner side of the mounting frame (11). The storage bin (211) is fixedly installed on the top of the mounting frame (11). The diverting pipe (212) is rotatably installed on the support plate of the mounting frame (11). The top of the diverting pipe (212) is connected to and rotatably connected to the discharge end of the storage bin (211). The bottom of the diverting pipe (212) is connected to the conveying pipe (213). One end is connected and fixedly connected. The other end of the conveying pipe (213) passes through the support plate of the mounting frame (11) and faces downward. The other end of the conveying pipe (213) is slidably connected to the support plate of the mounting frame (11). The conveying pump (214) is fixedly installed on the conveying pipe (213). The mounting frame (11) has an arc-shaped groove that slides with the other end of the conveying pipe (213). A buffer structure is installed on the outside of the end of the conveying pipe (213) facing the ground. The bottom of the steering pipe (212) is connected to the adjusting steering component (22).

4. The crack pouring device for road construction according to claim 3, characterized by The buffer structure includes a ground-mounted tube (215), an adjusting tube (216), and a spring (217). The adjusting tube (216) is sleeved on the outside of the end of the conveying tube (213) facing the ground and is slidably connected to the conveying tube (213). The ground-mounted tube (215) is sleeved on the outside of the end of the conveying tube (213) facing the ground and is slidably connected to the conveying tube (213). The spring (217) is sleeved on the outside of the ground-mounted tube (215). The two ends of the spring (217) are fixedly connected to the ground-mounted tube (215) and the adjusting tube (216) respectively. The top of the adjusting tube (216) is connected to the lifting component (31).

5. The crack filling apparatus for road work according to claim 3, characterized by, The adjustable steering component (22) includes a motor (221), a drive gear (222), and a semi-arc gear disk (223). The motor (221) is fixedly mounted on the support plate of the mounting bracket (11). The output end of the motor (221) is fixedly connected to the drive gear (222). The drive gear (222) is rotatably mounted on the support plate of the mounting bracket (11). The drive gear (222) meshes with the semi-arc gear disk (223). The semi-arc gear disk (223) is fixedly mounted on the bottom outer side of the steering tube (212).

6. The crack pouring device for road construction according to claim 4, wherein The lifting component (31) includes a linear module (311), a lifting plate (313), and a sliding rod (314). The linear module (311) is fixedly installed at the bottom of the support plate of the mounting frame (11). The output end of the linear module (311) is fixedly connected to one end of the lifting plate (313). The linear module (311) is set up and down in the moving direction. The lifting plate (313) is set in an arc shape near the adjusting tube (216). The arc surface of the lifting plate (313) is provided with a sliding groove that cooperates with the sliding rod (314). There are two sliding rods (314). One end of each sliding rod (314) is fixedly installed at the top of the adjusting tube (216). The other end of each sliding rod (314) is inserted into the sliding groove for a limited sliding connection. The bottom of the lifting plate (313) is connected to the cleaning component (32).

7. The crack pouring device for road construction according to claim 6, characterized by The lifting component (31) also includes an electric telescopic rod (312). There are two electric telescopic rods (312). The two electric telescopic rods (312) are fixedly installed at the bottom of the support plate of the mounting frame (11). The output ends of the two electric telescopic rods (312) are fixedly connected to the top of the lifting plate (313) near the adjusting pipe (216).

8. The road construction crack filling device according to claim 6, characterized in that, The cleaning component (32) includes a second motor (321), a transmission structure (322), a cleaning disc (323), and a gear set (324). The second motor (321) is fixedly installed at the bottom of the lifting plate (313) away from the regulating pipe (216). There are two cleaning discs (323) arranged symmetrically in front and behind. The gear set (324) consists of two meshing spur gears arranged symmetrically in front and behind. The two cleaning discs (323) are both installed at the bottom center of the lifting plate (313). The two cleaning discs (323) are fixedly connected to the bottom of the two spur gears of the gear set (324). The output end of the second motor (321) is connected to one of the cleaning discs (323) through the transmission structure (322). The bottom of the cleaning disc (323) is fixedly provided with bristles.

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