An automated biological cleaning device

Abstract

The present application aims to provide an automatic biological cleaning device which can complete the sweeping cleaning in the box in the working environment. The present application comprises a box, a transfer module, a moving frame, a lifting module and a cleaning brush. The transfer module is arranged on the box, the moving frame is connected with the output end of the transfer module, the lifting module is arranged on the moving frame, and the cleaning brush is connected with the movable end of the lifting module. The transfer module drives the moving frame to make reciprocating motion above the box, the lifting module drives the cleaning brush to make reciprocating motion up and down in the box, and the cleaning brush is provided with a plurality of brush bodies which sweep and clean the inner wall of the box. The present application is applied to the technical field of box sweeping and cleaning device.

Description

Technical Field

[0001] This invention relates to the technical field of box cleaning devices, and particularly to an automated biological cleaning device. Background Technology

[0002] As is well known, aquaculture tanks are devices used in aquaculture, widely applied in aquaculture companies and factories, and also for home use for ornamental fish farming. Smart aquaculture tanks, however, utilize the Internet of Things (IoT) for centralized monitoring, making them more suitable for large-scale aquaculture. Typically, smart aquaculture tanks are equipped with multiple sensors to monitor the water and environment inside, or to adjust the lighting environment by inserting lamps. Researchers have found in daily use that dirt such as microorganisms or animal excrement adheres to the outer walls of the pipes. Over time, without cleaning, a thick layer of dirt accumulates on the outside of the pipes, affecting the sensor detection and lamp performance.

[0003] Chinese Patent Publication No. CN109013595A discloses a cleaning device for a biological extraction box, comprising an extraction box, a cleaning box at the top of the extraction box, an air pump at the top inner side of the cleaning box, an air inlet and an air outlet on one side of the air pump, a piston inside the air pump, a push rod at the bottom of the piston, the bottom end of the push rod penetrating the air pump and extending to the outside of the air pump to connect with a bearing, a connecting rod at the bottom of the bearing, and a toothed ring fitted on the connecting rod. Gear 1 and Gear 2 are respectively arranged above the gear ring. Gear 1 and Gear 2 are symmetrical and both gear 1 and Gear 2 mesh with the gear ring. Gear 1 is fitted onto screw 1. One end of screw 1 is connected to motor 1. Support column 1 is provided at the bottom of motor 1. Gear 2 is fitted onto screw 2. The technical solution of this invention uses a brush that can move up and down to clean the inner wall of the box. However, it is necessary to transfer the internal water before use, which makes the process complicated and the cleaning efficiency low. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an automated biological cleaning device that can complete the sweeping and cleaning of the box in the working environment.

[0005] The technical solution adopted in this invention is as follows: This invention includes a housing, a transfer module, a moving frame, a lifting module, and a cleaning brush. The transfer module is disposed on the housing, the moving frame is connected to the output end of the transfer module, the lifting module is disposed on the moving frame, and the cleaning brush is connected to the movable end of the lifting module. The transfer module drives the moving frame to reciprocate above the housing, and the lifting module drives the cleaning brush to reciprocate up and down inside the housing. The cleaning brush has a plurality of brush bodies, and the plurality of brush bodies sweep and clean the inner wall of the housing.

[0006] Furthermore, the transfer module includes a transfer drive device, two sets of drive rods, and two sets of slide bases. The transfer drive device and the two sets of slide bases are all fixedly connected to the housing. One end of each set of drive rods is connected to the output end of the transfer drive device, and the other end of each set of drive rods is connected to the two sets of slide bases respectively.

[0007] Furthermore, the movable frame includes two sets of hanging ears and a support plate. The two sets of hanging ears are fixedly connected to both ends of the support plate, and the two sets of hanging ears are connected to the movable end of the transfer module. The lifting module is disposed on the support plate, and the support plate is provided with a plurality of positioning holes, which are fixedly engaged with the lifting module.

[0008] Furthermore, the lifting module includes a lifting drive device, two sets of lifting seats, two sets of lifting connection groups, two sets of reciprocating adjustment groups, and two sets of guide seats. The lifting drive device and the two sets of lifting seats are all mounted on the movable frame. The two sets of guide seats are respectively mounted below the two sets of lifting seats and fixedly connected to the movable frame. The output end of the lifting drive device is provided with a transmission rod, which is drivenly connected to the two sets of lifting seats. The two sets of reciprocating adjustment groups are correspondingly mounted on the two sets of lifting seats and are drivenly engaged with the transmission rod. The two sets of lifting connection groups are connected to the transmission rod. The two sets of lifting connection groups are correspondingly wound around the two sets of reciprocating adjustment groups and the guide seats and connected to the cleaning brush.

[0009] Furthermore, the lifting connection assembly is equipped with a wire feeding wheel and a steel wire rope. The wire feeding wheel is fixedly connected to the transmission rod 46, one end of the steel wire rope is fixedly connected to the wire feeding wheel, and the other end of the steel wire rope is connected to the cleaning brush.

[0010] Furthermore, the reciprocating adjustment assembly includes a reciprocating lead screw, a reciprocating seat, several rollers, and a tensioning element. The reciprocating lead screw is rotatably connected to the lifting seat. One end of the reciprocating lead screw is equipped with a transmission wheel, which is driven by a transmission element and a transmission rod. The reciprocating seat is driven by the reciprocating lead screw. Several rollers are rotatably connected to the reciprocating seat. The lifting connection assembly passes through several rollers in sequence and is connected to the cleaning brush. The tensioning element is located around the transmission wheel and is pressed against the transmission element. The transmission rod drives the reciprocating lead screw to rotate, and the reciprocating seat performs left and right reciprocating motion on the reciprocating lead screw.

[0011] Furthermore, the reciprocating seat is equipped with two sets of detection components, which cooperate with the lifting connection group for detection.

[0012] Furthermore, the guide seat is provided with a bracket and two sets of driven wheels. The bracket is fixedly connected to the lower surface of the movable frame. The bracket is provided with two sets of protrusions of different heights. The two sets of driven wheels are rotatably connected to the two sets of protrusions respectively. The wire rope is wound around the two sets of driven wheels in sequence and fixedly connected to the cleaning brush.

[0013] Furthermore, the cleaning brush includes a fixed beam, several brush bodies, and two sets of fixed ears. The two sets of fixed ears are located above the fixed beam and connected to the lifting module. The several brush bodies are all connected to the fixed beam and sweep and clean the inner wall of the box. The middle part of the fixed beam is higher than the two sides.

[0014] Furthermore, the box body is provided with a cleaning tank, a pipeline placement plate and several placement pipes. The cleaning tank is provided with a cleaning device, which works in conjunction with the cleaning brush for rinsing. The pipeline placement plate is located on one side of the box body and has several through holes. Several placement pipes pass through the several through holes and are connected to the box body. The several placement pipes have a hollow structure.

[0015] The beneficial effects of this invention are as follows: A pipe placement plate is provided on one side of the housing. According to actual needs, a placement tube is inserted into the through-hole of the pipe placement plate. The placement tube is a hollow, transparent tube that allows light to pass through, improving the internal lighting environment of the housing and facilitating the detection of biological survival within the housing. The transfer module drives the cleaning brush back and forth between multiple pipes. The lifting module drives the cleaning brush up and down via a steel wire rope to sweep the inner wall of the housing and the outer wall of the placement tube. The middle of the cleaning brush is higher than the sides, and the brush body is arranged in a spindle shape with an angle of 2-4 degrees. When the lifting module lowers the cleaning brush, the brush bodies located at both ends of the fixed beam contact the outer wall of the placement tube first, minimizing the contact area between the brush body and the placement tube at the same time. This avoids excessive resistance during cleaning and prevents damage to the placement tube due to the downward pressure of the brush body, effectively protecting the structural safety of the placement tube. Furthermore, each time the lower cleaning brush is used, it simultaneously sweeps the outer walls of both placement tubes, effectively removing dirt from the outer walls of the placement tubes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the transfer module and moving frame of the present invention;

[0018] Figure 3 This is a structural schematic diagram of the mobile frame and lifting module of the present invention;

[0019] Figure 4 yes Figure 3 A magnified view of part A in the middle;

[0020] Figure 5 This is a schematic diagram of the cleaning brush of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the box body of the present invention. Detailed Implementation

[0022] like Figures 1 to 6As shown, in this embodiment, the present invention includes a housing 1, a transfer module 2, a moving frame 3, a lifting module 4, and a cleaning brush 5. The transfer module 2 is disposed on the housing 1. The moving frame 3 is connected to the output end of the transfer module 2. The lifting module 4 is disposed on the moving frame 3. The cleaning brush 5 is connected to the movable end of the lifting module 4. The transfer module 2 drives the moving frame 3 to reciprocate above the housing 1. The lifting module 4 drives the cleaning brush 5 to reciprocate up and down inside the housing 1. The cleaning brush 5 is provided with a plurality of brush bodies 53, which sweep and clean the inner wall of the housing 1. A pipe placement plate 12 is provided on one side of the housing 1. According to actual needs, a placement tube 13 is inserted into the through hole of the pipe placement plate 12. The placement tube 13 is a hollow transparent tube, which allows light to pass through from the inside. The light source is used to improve the lighting environment inside the enclosure 1 to facilitate the detection of biological survival conditions. The transfer module 2 drives the cleaning brush 5 back and forth between multiple pipelines. The lifting module 4 drives the cleaning brush 5 up and down to sweep the inner wall of the enclosure 1 and the outer wall of the placement tube 13 via the steel wire rope 432. The middle of the cleaning brush 5 is higher than the two sides. At the same time, the brush body 53 is arranged in a spindle shape with an angle of 2-4 degrees. When the lifting module 4 lowers the cleaning brush 5, the brush body 53 located at both ends of the fixed beam 51 contacts the outer wall of the placement tube 13 first, minimizing the contact area between the brush body 53 and the placement tube 13 at the same time. This avoids excessive resistance during the cleaning process and damage to the placement tube 13 due to the downward pressure of the brush body 53, effectively protecting the structural safety of the placement tube 13. Moreover, each time the cleaning brush 5 is lowered, it can simultaneously sweep the outer walls of the placement tube 13 on both sides, effectively removing dirt from the outer walls of the placement tube 13.

[0023] In this embodiment, the transfer module 2 includes a transfer drive device 21, two sets of drive rods 22, and two sets of slide bases 23. The transfer drive device 21 and the two sets of slide bases 23 are fixedly connected to the housing 1. One end of each set of drive rods 22 is connected to the output end of the transfer drive device 21, and the other end of each set of drive rods 22 is connected to the two sets of slide bases 23. The transfer drive device 21 is a rotary motor. A coupling is provided on the side of the drive rods 22 near the transfer drive device 21. Multiple sets of fixing brackets are provided at the bottom of the two sets of slide bases. The multiple sets of fixing brackets are fixed to the upper surface of the housing 1 by screws.

[0024] In this embodiment, the movable frame 3 includes two sets of hanging ears 31 and a support plate 32. The two sets of hanging ears 31 are fixedly connected to both ends of the support plate 32, and the two sets of hanging ears 31 are connected to the movable end of the transfer module 2. The lifting module 4 is disposed on the support plate 32. The support plate 32 is provided with a plurality of positioning holes, which are fixedly engaged with the lifting module 4. Two sets of positioning detection elements 446 are provided below the support plate 32. The two sets of positioning detection elements 446 are respectively disposed on one side of the two sets of guide seats 45 and cooperate with the fixing ears 52 of the cleaning brush 5 for positioning detection.

[0025] In this embodiment, the lifting module 4 includes a lifting drive device 41, two sets of lifting seats 42, two sets of lifting connection groups 43, two sets of reciprocating adjustment groups 44, and two sets of guide seats 45. The lifting drive device 41 and the two sets of lifting seats 42 are all mounted on the movable frame 3. The two sets of guide seats 45 are respectively located below the two sets of lifting seats 42 and fixedly connected to the movable frame 3. The output end of the lifting drive device 41 is provided with a transmission rod 46, which is driveably connected to the two sets of lifting seats 42. The two sets of reciprocating adjustment groups 44 are correspondingly mounted on the two sets of lifting seats 42, and both sets of reciprocating adjustment groups 44 are driveably engaged with the transmission rod 46. The two sets of lifting connection groups 43 are connected to the transmission rod 46, and the two sets of lifting connection groups 43 are correspondingly wound around the two sets of reciprocating adjustment groups 44 and the guide seats 45, connecting to the cleaning brush 5. The device 41 is a rotary motor. A bearing seat is provided in the middle of the moving platform. The bearing seat is set between the two sets of lifting seats 42 to support the transmission rod 46 that transmits torque. A transmission gear is provided on the side of the transmission rod 46 near the lifting seat 42. The transmission gear is used to drive the reciprocating adjustment group 44 to move. When it is necessary to lower the cleaning brush 5, the lifting drive device 41 transmits the torque to the lifting connection group 43 through the transmission rod 46. The lifting connection group 43 releases the wire rope 432. The reciprocating adjustment group 44 is driven to move back and forth left and right through the transmission component. The wire rope 432 is connected to and lowered after the direction of the rope is adjusted by the guide seat 45. When the cleaning brush 5 is retracted, the lifting drive device 41 rotates in the opposite direction to make the wire release wheel 431 of the lifting connection group 43 perform a winding action. At the same time, the reciprocating adjustment group 44 moves back and forth left and right to arrange the wire rope 432 neatly from left to right or from right to left, so as to facilitate multiple retrievals and lowering, and reduce wear and tangling during use.

[0026] In this embodiment, the lifting connection group 43 is provided with a wire feeding wheel 431 and a steel wire rope 432. The wire feeding wheel 431 is fixedly connected to the transmission rod 46. One end of the steel wire rope 432 is fixedly connected to the wire feeding wheel 431, and the other end of the steel wire rope 432 is connected to the cleaning brush 5. The wire feeding wheel 431 is provided with several grooves. The groove design prevents the steel wire rope 432 from slipping during the winding process.

[0027] In this embodiment, the reciprocating adjustment assembly 44 includes a reciprocating lead screw 441, a reciprocating seat 442, several rollers 443, and a tensioning member 444. The reciprocating lead screw 441 is rotatably connected to the lifting seat 42. One end of the reciprocating lead screw 441 is provided with a transmission wheel 445. The transmission wheel 445 is driven by the transmission member and the transmission rod 46. The reciprocating seat 442 is driven by the reciprocating lead screw 441. Several rollers 443 are rotatably connected to the reciprocating seat 442. The lifting connection assembly 43 passes through several rollers 443 in sequence and is connected to the cleaning brush 5. The tensioning member 444 is located around the transmission wheel 445 and is pressed against the transmission member. The transmission rod 46 drives the reciprocating lead screw 441. 41. Rotation: The reciprocating seat 442 reciprocates left and right on the reciprocating screw 441. The surface of the reciprocating screw 441 is provided with guide lines. The reciprocating seat 442 cooperates with the guide lines. When the reciprocating screw 441 rotates, the reciprocating seat 442 moves left and right along the guide lines. The roller 443 on the reciprocating seat 442 is provided with a central guide groove. The wire rope 432 is limited in the guide groove, so that the wire rope 432 can swing left and right with the reciprocating seat 442 when winding and is neatly arranged on the pay-off wheel 431. The tensioning member 444 is provided with a tensioning wheel and a tensioning seat. The tensioning seat is provided with a waist-shaped groove and a positioning plate. The positioning plate is fixedly engaged with the waist-shaped groove by screws. The tensioning wheel is fixed on the positioning plate. The operator can adjust the up and down position of the positioning plate to adjust the tension of the transmission member.

[0028] In this embodiment, the reciprocating seat 442 is provided with two sets of detection elements 446. The two sets of detection elements 446 cooperate with the lifting connection group 43 for detection. The two sets of detection elements 446 are through-beam optical fibers. Since the steel wire rope 432 is made of multiple sets of fine steel wires, the outer steel wires are prone to breakage and wear during use. The through-beam optical fibers detect the surface condition of the steel wire rope 432 during the release and rewinding process.

[0029] In this embodiment, the guide seat 45 is provided with a bracket 451 and two sets of driven wheels 452. The bracket 451 is fixedly connected to the lower surface of the movable frame 3. The bracket 451 is provided with two sets of protrusions of different heights. The two sets of driven wheels 452 are rotatably connected to the two sets of protrusions respectively. The wire rope 432 is wound around the two sets of driven wheels 452 in sequence and fixedly connected to the cleaning brush 5. The two sets of driven wheels 452 are used to adjust the position of the wire rope 432.

[0030] In this embodiment, the cleaning brush 5 includes a fixed beam 51, several brush bodies 53, and two sets of fixed ears 52. The two sets of fixed ears 52 are located above the fixed beam 51 and connected to the lifting module 4. Several brush bodies 53 are connected to the fixed beam 51 and sweep and clean the inner wall of the housing 1. The middle part of the fixed beam 51 is higher than the two sides, and the middle part of the cleaning brush 5 is higher than the two sides. At the same time, the brush bodies 53 are arranged in a spindle shape with an angle of 2-4 degrees. When the lifting module 4 lowers the cleaning brush 5, the brush bodies 53 located at both ends of the fixed beam 51 first contact the outer wall of the placement tube 13, minimizing the contact area between the brush bodies 53 and the placement tube 13 at the same time, avoiding excessive resistance during the cleaning process, and preventing the pressure of the brush bodies 53 lowering from damaging the placement tube 13, thus effectively protecting the structural safety of the placement tube 13.

[0031] In this embodiment, the housing 1 is provided with a cleaning tank 11, a pipe placement plate 12, and a plurality of placement pipes 13. The cleaning tank 11 is provided with a cleaning device, which cooperates with the cleaning brush 5 for rinsing. The pipe placement plate 12 is located on one side of the housing 1 and has a plurality of through holes. The plurality of placement pipes 13 pass through the plurality of through holes and are connected to the housing 1. The plurality of placement pipes 13 have a hollow structure. After cleaning, the lifting module 4 and the transfer module 2 cooperate to move the cleaning brush 5 to one side of the cleaning tank 11. The cleaning device cleans the brush by rinsing with water.

[0032] Working principle of the invention:

[0033] According to actual needs, the staff inserts the placement tube 13 into the box 1 through the through hole of the pipe placement plate 12. After a period of time, the placement tube 13 and the inside of the box 1 need to be swept. The transfer drive device 21 moves the cleaning brush 5 between two adjacent sets of placement tubes 13. When the brush is lowered, the lifting drive device 41 transmits torque to the lifting connection group 43 through the transmission rod 46. The lifting connection group 43 releases the wire rope 432. The reciprocating adjustment group 44 moves left and right reciprocally driven by the transmission component. The wire rope 432 passes through the guide... After adjusting the direction of the rope to seat 45, connect and lower the cleaning brush 5. The cleaning brush 5 sweeps the outer wall of the placement tube 13 and the inside of the box 1. When the cleaning brush 5 is retracted, the lifting drive device 41 rotates in the opposite direction to make the wire feeding wheel 431 of the lifting connection group 43 perform a winding action. The cleaning brush 5 sweeps the outer wall of the placement tube 13 and the inside of the box 1 again. At the same time, the reciprocating adjustment group 44 performs left and right reciprocating motion to arrange the wire rope 432 neatly from left to right or from right to left. Then the transfer module 2 moves the cleaning brush 5 to the next cleaning position and repeats the lower recycling process.

[0034] Although the embodiments of the present invention are described with reference to actual solutions, they do not constitute a limitation on the meaning of the present invention. Modifications to the embodiments and combinations with other solutions based on this specification will be obvious to those skilled in the art.

Claims

1. An automated biological cleaning apparatus, characterized by: It includes a housing (1), a transfer module (2), a moving frame (3), a lifting module (4), and a cleaning brush (5). The transfer module (2) is mounted on the housing (1). The moving frame (3) is connected to the output end of the transfer module (2). The lifting module (4) is mounted on the moving frame (3). The cleaning brush (5) is connected to the movable end of the lifting module (4). The transfer module (2) drives the moving frame (3) to reciprocate above the housing (1). The lifting module (4) drives the cleaning brush (5) to move inside the housing (1). The cleaning brush (5) is provided with several brush bodies (53) and the brush bodies (53) sweep and clean the inner wall of the box (1) in a reciprocating motion. The lifting module (4) includes a lifting drive device (41), two sets of lifting seats (42), two sets of lifting connection groups (43), two sets of reciprocating adjustment groups (44), and two sets of guide seats (45). The lifting drive device (41) and the two sets of lifting seats (42) are all set on the moving frame (3). The two sets of guide seats (45) are respectively set below the two sets of lifting seats (42) and fixedly connected to the moving frame (3). The output end of the lifting drive device (41) is provided with a transmission rod (46), which is connected to two sets of lifting seats (42). Two sets of reciprocating adjustment groups (44) are correspondingly arranged on the two sets of lifting seats (42). Both sets of reciprocating adjustment groups (44) are connected to the transmission rod (46). Both sets of lifting connection groups (43) are connected to the transmission rod (46). The two sets of lifting connection groups (43) are correspondingly wrapped around the two sets of reciprocating adjustment groups (44) and the guide seat (45) and connected to the cleaning brush (5). The housing (1) A cleaning tank (11), a pipeline placement plate (12) and several placement pipes (13) are provided. A cleaning device is provided in the cleaning tank (11). The cleaning device is used in conjunction with the cleaning brush (5) for rinsing. The pipeline placement plate (12) is located on one side of the box (1). Several through holes are provided on the pipeline placement plate (12). Several placement pipes (13) pass through several through holes and are connected to the box (1). Several placement pipes (13) have a hollow structure. The middle part of the cleaning brush (5) is higher than the two sides. At the same time, the brush body is arranged in a spindle shape with an angle of 2-4 degrees.

2. An automated biological cleaning apparatus as claimed in claim 1, wherein: The transfer module (2) includes a transfer drive device (21), two sets of drive rods (22) and two sets of slide seats (23). The transfer drive device (21) and the two sets of slide seats (23) are fixedly connected to the housing (1). One end of each set of drive rods (22) is connected to the output end of the transfer drive device (21), and the other end of each set of drive rods (22) is connected to the two sets of slide seats (23).

3. The automated biological cleaning device of claim 1, wherein: The mobile frame (3) includes two sets of hanging ears (31) and a support plate (32). The two sets of hanging ears (31) are fixedly connected to both ends of the support plate (32). The two sets of hanging ears (31) are connected to the movable end of the transfer module (2). The lifting module (4) is set on the support plate (32). The support plate (32) is provided with several positioning holes, and the several positioning holes are fixedly engaged with the lifting module (4).

4. An automated biological cleaning apparatus as claimed in claim 3, wherein: The lifting connection group (43) is provided with a wire feeding wheel (431) and a steel wire rope (432). The wire feeding wheel (431) is fixedly connected to the transmission rod (46). One end of the steel wire rope (432) is fixedly connected to the wire feeding wheel (431), and the other end of the steel wire rope (432) is connected to the cleaning brush (5).

5. The automated biological cleaning device of claim 3, wherein: The reciprocating adjustment assembly (44) includes a reciprocating screw (441), a reciprocating seat (442), several rollers (443), and a tensioning element (444). The reciprocating screw (441) is rotatably connected to the lifting seat (42). One end of the reciprocating screw (441) is provided with a transmission wheel (445). The transmission wheel (445) is connected to the transmission rod (46) via a transmission element. The reciprocating seat (442) is connected to the reciprocating screw (441). Several rollers (443) are rotatably connected to the reciprocating seat (442). The lifting connection group (43) passes through several rollers (443) in sequence and is connected to the cleaning brush (5). The tensioning member (444) is located around the transmission wheel (445) and is pressed and fitted with the transmission member. The transmission rod (46) drives the reciprocating screw (441) to rotate. The reciprocating seat (442) moves back and forth on the reciprocating screw (441).

6. An automated biological cleaning device according to claim 5, characterized in that: The reciprocating seat (442) is provided with two sets of detection elements (446), and the two sets of detection elements (446) cooperate with the lifting connection group (43) for detection.

7. An automated biological cleaning device according to claim 4, characterized in that: The guide seat (45) is provided with a bracket (451) and two sets of driven wheels (452). The bracket (451) is fixedly connected to the lower surface of the movable frame (3). The bracket (451) is provided with two sets of protrusions of different heights. The two sets of driven wheels (452) are rotatably connected to the two sets of protrusions respectively. The wire rope (432) is wound around the two sets of driven wheels (452) in sequence and fixedly connected to the cleaning brush (5).

8. The automated biological cleaning device of claim 1, wherein: The cleaning brush (5) includes a fixed beam (51) and two sets of fixed ears (52). The two sets of fixed ears (52) are located above the fixed beam (51) and connected to the lifting module (4). Several brush bodies (53) are connected to the fixed beam (51) and sweep and clean the inner wall of the box (1). The middle part of the fixed beam (51) is higher than the height of the sides.

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