Cleaning equipment for sunlight greenhouse

Abstract

The invention relates to the technical field of greenhouse cleaning, and discloses a cleaning device for a sunlight greenhouse, which comprises a plurality of groups of uniformly distributed support frames, the tops of the support frames are jointly covered with a light-transmitting covering film, and the two ends of the light-transmitting covering film are both provided with mounting bases fixedly connected with the support frames. A water collecting unit is arranged in the middle of the top end of the light-transmitting covering film, guide mechanisms are arranged on the two sides of the top of the mounting base, and each guide mechanism comprises a linear toothed rail; according to the cleaning equipment for the sunlight greenhouse, the multiple sets of cleaning execution pieces arranged in parallel are arranged so that the surface of a light-transmitting covering film can be brushed in a rotating and attaching mode, and meanwhile, the cleaning execution pieces are driven by the cooperation of a connecting frame to conduct overall transverse reciprocating displacement; therefore, seamless connection type cleaning is achieved for a gap between every two adjacent sets of cleaning execution pieces, damage to the surface of the light-transmitting film is avoided, and the cleaning effect on the surface of the light-transmitting film is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of greenhouse cleaning, and more specifically, to a cleaning device for a sunlight greenhouse. Background Art

[0002] With the development of modern agricultural technology, solar greenhouses have become important facilities for agricultural production due to their excellent thermal insulation performance and light regulation capabilities. However, as a translucent covering material, the translucent film is easily exposed to the natural environment for a long time and is prone to accumulate pollutants such as dust, bird droppings, and algae, resulting in a decrease in light transmittance, which directly affects crop photosynthesis and yield. According to statistics, for every 10% decrease in light transmittance, crop yield can be reduced by 15% to 20%. Therefore, regular cleaning of the surface of the translucent film is a key link in ensuring the efficiency of greenhouse production.

[0003] Traditional cleaning methods mainly rely on manual flushing or mechanical scrubbing, which has problems such as low efficiency, high labor intensity, and incomplete cleaning. Existing mechanical cleaning equipment mostly uses electric drive devices, which require external power supplies or built-in batteries, which not only increases energy consumption costs, but also limits its applicability in remote farmland scenarios. In addition, the cleaning mechanism of existing equipment has a single design and a fixed scrubbing path, which makes it difficult to cover the dead corners between adjacent cleaning units, resulting in insufficient cleaning coverage (usually less than 85%). At the same time, the traditional flushing method uses continuous water flow, which causes a waste of water resources, and is difficult to promote, especially in arid areas.

[0004] In response to the above problems, some technical solutions attempt to improve the cleaning effect through rail-type moving mechanisms or spray systems, but there are still defects such as complex structure, high maintenance cost, and easy mechanical damage to the membrane surface. For example, the high-speed rotation of rigid bristles may scratch the greenhouse film and shorten its service life; the centralized spray system causes uneven flushing due to insufficient water pressure. Therefore, it is urgent to develop a non-powered cleaning equipment that is efficient and energy-saving, highly adaptable, and has both rotation and lateral displacement cleaning capabilities to solve the problems of low cleaning coverage, water resource waste, and dependence on external energy in the existing technology, and meet the needs of modern agriculture for intelligent and sustainable operation and maintenance of facilities. Summary of the invention

[0005] The present invention provides a cleaning device for a solar greenhouse, which solves the technical problems that the existing greenhouse cleaning method in the related art is easy to damage the film or glass surface of the greenhouse and there are also cleaning dead corners.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions: A cleaning device for a solar greenhouse, comprising: A support frame, the top of which is covered with a light-transmitting film, and both ends of the light-transmitting film are provided with mounting bases fixedly connected to the support frame; A water collection unit is arranged at the center of the top of the light-transmitting covering film and is supported by a supporting frame; A guide assembly, symmetrically arranged on both sides of the top of the mounting base, comprising at least one set of linear gear rails; A cleaning assembly is arranged between the two sets of linear racks on the same side, and includes a movable chamber that can slide along the surface of the light-transmitting coating, and a plurality of cleaning actuators that contact the surface of the light-transmitting coating are arranged at the bottom of the movable chamber; A linkage drive mechanism, disposed inside the mobile bin, for driving the cleaning actuator to perform rotational and lateral composite motions, and realizing path control through a guide assembly; A water supply unit is connected to the water collection unit and is arranged on the back side of the mobile bin, and a water outlet structure that can be opened and closed is provided at the bottom thereof; The flow control mechanism is integrated inside the mobile bin and is used to regulate the intermittent drainage of the water supply unit.

[0007] As a further optimization scheme of the present invention, the guide assembly also includes a transmission gear set meshing with the linear rack, and the two sets of transmission gear sets are coaxially connected through a drive shaft passing through the mobile warehouse, and both ends of the drive shaft are provided with sliding seats that slide with the top surface of the mounting base.

[0008] As a further optimization scheme of the present invention, a guide pulley block is symmetrically arranged on the outer side of the mounting base, the sliding seat is connected with a traction rope that bypasses the guide pulley block, and a gravity counterweight unit is arranged at the end of the traction rope.

[0009] As a further optimization solution of the present invention, the linkage drive mechanism includes: A spiral transmission member is arranged on the driving shaft, an axial sleeve is arranged between adjacent spiral transmission members, and a transmission key is arranged on the surface of the driving shaft to engage with the spiral transmission member and the inner wall of the axial sleeve. A transmission rod extending into the mobile bin is connected to the top of the cleaning actuator, a worm gear is arranged at the top of the transmission rod to mesh with the spiral transmission member, and a long guide groove is arranged at the bottom of the mobile bin for the lateral displacement of the transmission rod.

[0010] As a further optimization scheme of the present invention, eccentric drive mechanisms are provided at both ends of the drive shaft, a constraint block cooperating with the eccentric drive mechanism is provided on the inner wall of the mobile bin, and a thrust plate which moves synchronously with the eccentric drive mechanism is also provided on the drive shaft.

[0011] As a further optimization scheme of the present invention, a slewing support ring is sleeved on the transmission rod, and the slewing support ring is abutted against the thrust plate through a connecting frame. A limiting guide groove is provided at the bottom of the mobile bin to guide the lateral movement of the connecting frame. The end of the connecting frame extends out of the mobile bin and forms a flow control plate that cooperates with the bottom of the water supply unit. A connecting plate that fits the thrust plate is provided on the outside of the connecting frame.

[0012] As a further optimization scheme of the present invention, a drainage port array is provided at the bottom of the water supply unit, and a regulating through hole is provided at the corresponding position of the flow control plate. The water supply unit is connected with the water collection unit through a water supply pipe, and a flow control valve is provided at the inlet end of the water supply pipe. A support groove compatible with the flow control plate is provided at one end of the back side of the mobile warehouse.

[0013] As a further optimization scheme of the present invention, the mass difference of the gravity counterweight unit satisfies: when the water supply unit stores water, the total mass of the mobile warehouse system is greater than the gravity counterweight unit, and after drainage, the mass of the gravity counterweight unit is greater than the total mass of the mobile warehouse system.

[0014] As a further optimization scheme of the present invention, a water collection filter hole array is provided on the top of the water collection unit, and its top surface is a guide curved surface structure. A one-way transmission component is provided between the transmission gear group and the drive shaft to prevent the transmission gear group from reversely driving the drive shaft.

[0015] The beneficial effects of the present invention are: 1. Efficient cleaning and full coverage: The cleaning actuator is driven by the worm gear and screw transmission to rotate at a speed of 20-30 rpm. Combined with the lateral displacement mechanism controlled by the eccentric drive mechanism, the cleaning actuator moves 5-10 cm laterally, completely covering the dead angle area between adjacent cleaning actuators, and the cleaning coverage rate is increased to 98%. Compared with traditional fixed-path cleaning equipment (coverage rate ≤ 85%), the cleaning efficiency is increased by more than 15%, significantly reducing the need for manual secondary cleaning.

[0016] 2. Water and energy saving and intelligent control: The pulse drainage design is adopted, and the drainage holes are periodically opened and closed through the lateral displacement of the flow control plate, achieving pulse flushing of 1 to 2 times / second, and the water volume of a single flushing is ≤0.5L / m², which saves 60% water compared with the continuous flushing mode. At the same time, the impact force of the water flow enhances the oil removal effect and improves the flushing uniformity by 30%. The whole process relies on hydraulic and gravity drive, and no external power supply is required. It is suitable for remote farmland without power grid coverage, and the operation and maintenance cost is reduced by 70%.

[0017] 3. Non-damage cleaning and structural optimization: The cleaning actuator is made of flexible material, with low-speed rotation and intermittent lateral displacement to avoid scratches on the greenhouse film by rigid bristles, extending the service life of the light-transmitting film by 2 to 3 years. The transmission system is designed with a transmission key and an axial sleeve to ensure that the spiral transmission part rotates synchronously with the drive shaft, avoiding cleaning interruptions caused by slipping, and improving the operating stability of the equipment by 40%.

[0018] 4. Automatic operation and low-cost maintenance: The equipment can be automatically lifted and lowered by utilizing the dynamic balance between the gravity of the water collection unit and the gravity counterweight unit. When the total weight of the water storage in the water supply unit exceeds the gravity counterweight unit, the cleaning mechanism moves downward for cleaning; after drainage, the gravity counterweight unit is pulled back to its original position, without requiring manual intervention. The mechanical structure uses standardized components (such as guide pulleys and one-way ratchet mechanisms), reducing the failure rate by 50% and the maintenance cost by only 30% of that of electric equipment.

[0019] 5. Environmental adaptability and scalability: The arc-shaped water collection unit design can collect rainwater as a clean water source, and the water pipeline is equipped with a control valve to achieve precise flow adjustment to adapt to different water quality and climatic conditions. The modular design of the cleaning mechanism supports rapid disassembly and assembly, and can be expanded to large facilities such as multi-span greenhouses. The application scenarios cover a variety of agricultural fields such as fruit and vegetable planting and flower cultivation, and have significant promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the overall structure of the support frame in the present invention; Figure 3 yes Figure 1 A schematic diagram of the structure at A; Figure 4 It is an enlarged cross-sectional view of the overall structure of the guide component, the cleaning component, the linkage drive mechanism, and the flow control mechanism in the present invention; Figure 5 yes Figure 4 A schematic diagram of the structure at B; Figure 6 yes Figure 4 A schematic diagram of the structure at position C of FIG. Figure 7 yes Figure 6 A schematic diagram of the structure at D of FIG. Figure 8 It is an enlarged cross-sectional view of the connection structure of the internal components of the mobile bin in the present invention; Fig. 9 yes Figure 8 A schematic diagram of the structure at E of FIG. Fig.10 It is an enlarged schematic diagram of the internal structure of the mobile bin in the present invention; Fig.11 It is an enlarged cross-sectional view of the connection structure of the connecting frame and the slewing support ring in the present invention.

[0021] In the figure: 1. Transparent coating; 2. Mounting base; 3. Linear gear rail; 4. Gravity counterweight unit; 5. Traction rope; 6. Water supply unit; 7. Mobile bin; 8. Cleaning actuator; 9. Water collection unit; 10. Support frame; 11. Water supply pipeline; 12. Transmission gear set; 13. Sliding seat; 14. Guide pulley set; 15. Screw transmission member; 16. Worm gear; 17. Axial sleeve; 18. Flow control plate; 19. Drive shaft; 20. Connecting frame; 21. Drive rod; 22. Eccentric drive mechanism; 23. Constraint block; 24. Thrust plate; 25. Drive key; 26. Connecting plate; 27. Control through hole; 28. Slewing bearing ring; 29. ​​Guide long groove; 30. Limit guide groove; 31. Support groove. DETAILED DESCRIPTION

[0022] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples. Example

[0023] like Figures 1 to 11 As shown, a cleaning device for a solar greenhouse includes a support frame 10, the top of which is covered with a light-transmitting film 1, and both ends of the light-transmitting film 1 are provided with mounting bases 2 fixedly connected to the support frame 10; The water collecting unit 9 is arranged at the top center of the light-transmitting covering film 1 and supported by the supporting frame 10; The guide assembly is symmetrically arranged on both sides of the top of the mounting base 2, and includes at least one set of linear racks 3. The guide assembly also includes a transmission gear set 12 meshing with the linear racks 3. The two transmission gear sets 12 are coaxially connected through a drive shaft 19 that passes through the mobile bin 7. Both ends of the drive shaft 19 are provided with a sliding seat 13 that slides with the top surface of the mounting base 2. The outer side of the mounting base 2 is symmetrically provided with a guide pulley set 14. The sliding seat 13 is connected to a traction cable 5 that bypasses the guide pulley set 14, and a gravity counterweight unit 4 is provided at the end of the traction cable 5; A water collection filter hole array is provided on the top of the water collection unit 9, and its top surface is a flow-guiding curved surface structure. A one-way transmission component is provided between the transmission gear set 12 and the drive shaft 19 to prevent the transmission gear set 12 from driving the drive shaft 19 in reverse; The cleaning assembly is arranged between two sets of linear gear rails 3 on the same side, and includes a movable bin 7 that can slide along the surface of the light-transmitting coating 1, and a plurality of cleaning actuators 8 that are in contact with the surface of the light-transmitting coating 1 are arranged at the bottom thereof, and a transmission rod 21 extending into the movable bin 7 is connected to the top of the cleaning actuator 8, and a worm gear 16 meshing with the spiral transmission member 15 is arranged at the top of the transmission rod 21, and a guide long groove 29 for the lateral displacement of the transmission rod 21 is opened at the bottom of the movable bin 7; The linkage drive mechanism is arranged inside the mobile bin 7, and is used to drive the cleaning actuator 8 to perform rotational and lateral compound motion, and realize path control through the guide assembly. The linkage drive mechanism includes: A spiral transmission member 15 is arranged on the driving shaft 19, and an axial sleeve 17 is arranged between adjacent spiral transmission members 15. A transmission key 25 is arranged on the surface of the driving shaft 19 to be engaged with the spiral transmission member 15 and the inner wall of the axial sleeve 17. An eccentric driving mechanism 22 is arranged at both ends of the driving shaft 19. A restraining block 23 cooperating with the eccentric driving mechanism 22 is arranged on the inner wall of the mobile bin 7. A thrust plate 24 that moves synchronously with the eccentric driving mechanism 22 is also arranged on the driving shaft 19; The water supply unit 6 is connected with the water collection unit 9 and is arranged on the back side of the mobile warehouse 7. A water outlet structure that can be opened and closed is provided at the bottom of the water supply unit 6. A drainage port array is provided at the bottom of the water supply unit 6. A regulating through hole 27 is provided at the corresponding position of the flow control plate 18. The water supply unit 6 is connected with the water collection unit 9 through a water delivery pipe 11. A flow control valve is provided at the inlet end of the water delivery pipe 11. A supporting groove 31 adapted to the flow control plate 18 is provided at one end of the back side of the mobile warehouse 7. The flow control mechanism is integrated inside the mobile bin 7 and is used to control the intermittent drainage of the water supply unit 6. A slewing support ring 28 is sleeved on the transmission rod 21, and the slewing support ring 28 is in contact with the thrust plate 24 through the connecting frame 20. A limiting guide groove 30 is provided at the bottom of the mobile bin 7 to guide the lateral movement of the connecting frame 20. The end of the connecting frame 20 extends out of the mobile bin 7 and forms a flow control plate 18 that cooperates with the bottom of the water supply unit 6. A connecting plate 26 that fits the thrust plate 24 is provided on the outer side of the connecting frame 20; The mass difference of the gravity counterweight unit 4 satisfies: when the water supply unit 6 stores water, the total mass of the mobile bin 7 system is greater than the gravity counterweight unit 4, and after drainage, the mass of the gravity counterweight unit 4 is greater than the total mass of the mobile bin 7 system.

[0024] The use process of the cleaning device for a solar greenhouse proposed in this embodiment is as follows: when the cleaning device is in use, the control valve at one end of the water delivery pipe 11 is controlled to open, thereby opening the passage between the water collection unit 9 and the water supply unit 6, and water is stored in the water supply unit 6. At this time, the amount of water in the water supply unit 6 continues to increase. As the amount of water stored continues to increase, the weight of the water supply unit 6 as a whole increases, and then combined with the weight of the mobile bin 7 as a whole, it is greater than the weight of the gravity counterweight unit 4. Under the action of gravity, the mobile bin 7 as a whole slides downward along the surface of the light-transmitting coating 1; During the sliding process, the transmission gear set 12 meshes with the linear gear rail 3 to rotate, thereby driving the drive shaft 19 to rotate. Through the rotation of the drive shaft 19, the spiral transmission member 15 and the axial sleeve 17 on the outside thereof are driven to rotate, and at the same time, the eccentric drive mechanism 22 is driven to rotate. The drive shaft 19 drives the spiral transmission member 15 to rotate, driving the worm gear 16 and the transmission rod 21, so that the cleaning actuator 8 rotates at a speed of 20 to 30 rpm to scrub the membrane surface; The rotation of the spiral transmission member 15 drives the worm gear 16 to rotate, and then drives the cleaning actuator 8 at the bottom of the transmission rod 21 to rotate, so that the cleaning actuator 8 rotates and scrubs the surface of the light-transmitting coating 1. During the scrubbing process, there must be a cleaning dead angle between two adjacent groups of cleaning actuators 8. At this time, as the rotation of the eccentric driving mechanism 22 is limited by the constraint block 23, the axial sleeve 17 and the spiral transmission member 15 are driven to slide on the outside of the driving shaft 19 as a whole. Synchronously, the displacement of the eccentric driving mechanism 22 drives the thrust plate 24 to push the connecting frame 20 connected to the connecting plate 26 to displace. The driving shaft 19 is engaged with the axial sleeve 17 through the transmission key 25, ensuring that the spiral transmission member 15 and the driving shaft 19 rotate synchronously to avoid slipping. Then, the connecting frame 20 drives the transmission rod 21 on the inner side of the slewing support ring 28 to follow the displacement, and further drives the cleaning actuator 8 to move laterally, so that the cleaning actuator 8 can scrub the cleaning dead corners, thereby ensuring the thorough cleaning of the surface of the light-transmitting coating 1. The cleaning structure not only avoids damage to the surface of the light-transmitting coating 1, but also ensures the cleaning effect of the surface of the light-transmitting coating 1. The eccentric driving mechanism 22 of the driving shaft 19 is constrained by the constraint block 23 in the moving bin, pushing the thrust plate 24 to squeeze the connecting plate 26, driving the connecting frame 20 to slide laterally along the limiting guide groove 30, and the transmission rod 21 is linked with the connecting frame 20 through the slewing support ring 28, driving the cleaning actuator to move laterally by 5 to 10 cm, covering the dead corner area between adjacent cleaning actuators, and the cleaning coverage rate is increased to 98%; While the cleaning actuator 8 is scrubbing the light-transmitting coating 1, the flow control plate 18 is driven by the connecting frame 20 to follow the reciprocating movement, so that the flow control plate 18 intermittently opens and closes the drainage hole at the bottom of the water supply unit 6, so that the water flow inside the water supply unit 6 flows out intermittently, thereby flushing the area after the cleaning actuator 8 is scrubbed, and saving water. The connecting frame 20 drives the flow control plate 18 to reciprocate horizontally, and its through hole 27 is periodically aligned with the drainage hole of the water supply unit 6, realizing a pulse drainage frequency of 1 to 2 times / second, and a single flushing water volume of ≤0.5L / m², which saves 60% water compared with continuous flushing, and at the same time, the water flow impact enhances the oil removal effect; As the mobile warehouse 7 is displaced as a whole to the bottom of the mounting base 2, the control valve of the water supply pipe 11 is controlled to be closed at this time, and then when the water flow inside the water supply unit 6 is emptied, the counterweight of the gravity counterweight unit 4 is again greater than the weight of the water supply unit 6 and the mobile warehouse 7 as a whole, and then under the traction of the gravity of the gravity counterweight unit 4, the mobile warehouse 7 and the water supply unit 6 are driven to reset as a whole. This structure realizes the automatic operation of the device through the weight difference, saves the investment in power equipment, and improves the practicality of the device. After drainage is completed, the weight of the water supply unit 6 is less than the gravity counterweight unit 4, and the gravity counterweight unit 4 pulls the sliding seat 13 through the traction rope 5 to reset along the linear rack 3, and the mobile warehouse 7 returns to the top. The whole process relies on hydraulic and gravity drive, and no external power supply is required. It is suitable for remote farmland scenes, and the operation and maintenance costs are reduced by 70%.

[0025] The specific implementation methods of this embodiment are described above, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms inspired by this embodiment, all of which are within the protection of this embodiment.

Claims

1. A cleaning device for a solar greenhouse, characterized in that: include: A support frame (10), the top of which is covered with a light-transmitting film (1), and both ends of the light-transmitting film (1) are provided with mounting bases (2) fixedly connected to the support frame (10); A water collection unit (9) is arranged at the top center of the light-transmitting covering film (1) and is supported by a supporting frame (10); A guide assembly, symmetrically arranged on both sides of the top of the mounting base (2), comprising at least one set of linear gear rails (3); A cleaning assembly is arranged between the two sets of linear racks (3) on the same side, and comprises a movable bin (7) that can slide along the surface of the light-transmitting coating (1), and a plurality of cleaning actuators (8) that are in contact with the surface of the light-transmitting coating (1) are arranged at the bottom thereof; A linkage drive mechanism, disposed inside the mobile bin (7), for driving the cleaning actuator (8) to perform a rotational and lateral composite motion, and realizing path control through a guide assembly; A water supply unit (6) is connected to the water collection unit (9) and is disposed on the back side of the mobile bin (7), and has a water outlet structure that can be opened and closed at its bottom; A flow control mechanism is integrated inside the mobile bin (7) and is used to regulate the intermittent drainage of the water supply unit (6).

2. A cleaning device for a solar greenhouse according to claim 1, characterized in that: The guide assembly also includes a transmission gear set (12) meshing with the linear rack (3), and the two transmission gear sets (12) are coaxially connected via a drive shaft (19) penetrating the movable bin (7), and both ends of the drive shaft (19) are provided with a sliding seat (13) that is slidably matched with the top surface of the mounting base (2).

3. A cleaning device for a solar greenhouse according to claim 2, characterized in that: A guide pulley block (14) is symmetrically arranged on the outer side of the mounting base (2); the sliding seat (13) is connected to a traction rope (5) that passes around the guide pulley block (14); and a gravity counterweight unit (4) is arranged at the end of the traction rope (5).

4. A solar greenhouse cleaning device according to claim 3, characterized in that: The linkage drive mechanism comprises: A spiral transmission member (15) is disposed on the drive shaft (19), an axial sleeve (17) is disposed between adjacent spiral transmission members (15), and a transmission key (25) is disposed on the surface of the drive shaft (19) and is engaged with the spiral transmission member (15) and the inner wall of the axial sleeve (17).

5. A cleaning device for a solar greenhouse according to claim 4, characterized in that: The top of the cleaning actuator (8) is connected to a transmission rod (21) extending into the movable bin (7); the top of the transmission rod (21) is provided with a worm gear (16) meshing with the spiral transmission member (15); and the bottom of the movable bin (7) is provided with a long guide groove (29) for lateral displacement of the transmission rod (21).

6. A cleaning device for a solar greenhouse according to claim 5, characterized in that: Eccentric drive mechanisms (22) are provided at both ends of the drive shaft (19), a restraining block (23) cooperating with the eccentric drive mechanism (22) is provided on the inner wall of the mobile bin (7), and a thrust plate (24) that moves synchronously with the eccentric drive mechanism (22) is also provided on the drive shaft (19).

7. A cleaning device for a solar greenhouse according to claim 6, characterized in that: The transmission rod (21) is sleeved with a slewing support ring (28), the slewing support ring (28) is in contact with the thrust plate (24) via a connecting frame (20), a limiting guide groove (30) is provided at the bottom of the mobile bin (7) for guiding the lateral movement of the connecting frame (20), a flow control plate (18) is formed at the end of the connecting frame (20) extending out of the mobile bin (7) and cooperating with the bottom of the water supply unit (6), and a connecting plate (26) is provided on the outside of the connecting frame (20) and is in contact with the thrust plate (24).

8. A solar greenhouse cleaning device according to claim 7, characterized in that: The water supply unit (6) is provided with a drainage port array at the bottom, and the flow control plate (18) is provided with a control through hole (27) at a corresponding position. The water supply unit (6) is connected to the water collection unit (9) through a water delivery channel (11), and a flow control valve is provided at the inlet end of the water delivery channel (11). A support groove (31) adapted to the flow control plate (18) is provided at one end of the back side of the mobile bin (7).

9. A solar greenhouse cleaning device according to claim 3, characterized in that: The mass difference of the gravity counterweight unit (4) satisfies that: when the water supply unit (6) is storing water, the total mass of the mobile bin (7) system is greater than the gravity counterweight unit (4); after water is drained, the mass of the gravity counterweight unit (4) is greater than the total mass of the mobile bin (7) system.

10. A solar greenhouse cleaning device according to claim 2, characterized in that: The top of the water collection unit (9) is provided with a water collection filter hole array, the top surface of which is a flow-guiding curved surface structure, and a one-way transmission component is provided between the transmission gear set (12) and the drive shaft (19) to prevent the transmission gear set (12) from driving the drive shaft (19) in the reverse direction.

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