Roof cleaning device

Abstract

The present invention relates to the technical field of cleaning equipment, and in particular to a roof cleaning device; the device comprises a first cleaning frame, a second cleaning frame, a walking unit and a cleaning unit, wherein the second cleaning frame is hinged to the first cleaning frame, the walking unit and the cleaning unit are both mounted on the first cleaning frame and the second cleaning frame, the walking unit can drive the first cleaning frame and the second cleaning frame to walk along the longitudinal direction of the roof, and when walking along the longitudinal direction of the roof, the cleaning unit can clean the roof, and since the roof cleaning device is also provided with a flipping driving unit, the flipping driving unit can drive the first cleaning frame and / or the second cleaning frame to rotate, so that the roof cleaning device can be unfolded or bent, and when walking to the top corner and the bottom corner of the roof, the unfolded state and the bent state are switched at the corner, so that the roof cleaning device finally turns over the corner, realizes automatic line wrapping of the roof cleaning device, and provides convenience for roof cleaning work.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and in particular to a roof cleaning device. Background Art

[0002] Greenhouses are an important part of modern agriculture, and the light transmittance of greenhouses plays a crucial role in greenhouse cultivation production. However, during years of production, the greenhouse roof is often covered with dust, moss, etc., resulting in a decrease in the light transmittance of the greenhouse roof and affecting the production efficiency of the greenhouse. Therefore, it is necessary to regularly clean or replace the covering material to maintain the light transmittance.

[0003] For example, a multi-span glass greenhouse roof cleaning system disclosed in a patent document with the publication number CN114351956A includes a support frame, a traveling device, a cleaning device, a control box, a cable reel, and a water pipe reel. The support frame straddles the tip of the pitched glass roof through the left inclined frame and the right inclined frame. The traveling device realizes traveling on the roof surface through the traveling wheels installed on the left inclined frame and the right inclined frame. The cleaning device is installed on the left inclined frame and the right inclined frame, and can efficiently clean the dust, moss and other attachments on the glass roof.

[0004] Although the existing greenhouse roof cleaning system can clean the greenhouse roof, since the greenhouse roof is generally a continuously bent structure, it is difficult for the existing roof cleaning system to achieve autonomous line change on the roof surface of this bent structure. After the single-line cleaning of the cleaning equipment on the roof, it is necessary to cooperate with the auxiliary line change equipment to change the cleaning system to the tip of the next roof in order to clean the roofs of row-connected greenhouses. The line change work consumes a large amount of man-hours and causes inconvenience to the cleaning work of the greenhouse roof. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and propose a roof cleaning device to solve the technical problem of inconvenient line change of the roof cleaning device in the prior art.

[0006] To achieve the above technical purpose, the technical solution of the present invention provides a roof cleaning device, including:

[0007] A first cleaning rack;

[0008] A second cleaning rack, hinged to the first cleaning rack,

[0009] A traveling unit, installed on the first cleaning rack and the second cleaning rack, for traveling longitudinally or transversely on the roof;

[0010] A cleaning unit, installed on the first cleaning rack and the second cleaning rack, for cleaning the roof when the traveling unit travels longitudinally;

[0011] A flipping drive unit for driving the first cleaning rack and / or the second cleaning rack to rotate, enabling the first cleaning rack and the second cleaning rack to form an unfolded state or a bent state, and capable of making the first cleaning rack and the second cleaning rack change rows during the switching between the unfolded state and the bent state.

[0012] Optionally, the traveling unit includes traveling wheels, the traveling wheels are installed at one end of the first cleaning rack and the second cleaning rack that are far away from each other, the flipping drive unit is connected to one end of the first cleaning rack and the second cleaning rack that are close to each other, and the flipping drive unit can use the traveling wheels as support points to drive the first cleaning rack and the second cleaning rack to rotate, forming the unfolded state or the bent state of the roof cleaning device.

[0013] Optionally, the flipping drive unit includes a first fixed shaft, a second fixed shaft and a flipping drive module. The first fixed shaft and the second fixed shaft are respectively fixed at one end of the first cleaning rack and the second cleaning rack that are close to each other and extend longitudinally. The flipping drive module is connected to the first fixed shaft and the second fixed shaft for driving the first fixed shaft and / or the second fixed shaft to rotate, so that the first fixed shaft and / or the second fixed shaft respectively drive the first cleaning rack and / or the second cleaning rack to rotate.

[0014] Optionally, the flipping drive module includes a drive assembly, a first gear and a second gear. The first gear and the second gear are respectively fixed on the first fixed shaft and the second fixed shaft, and the drive assembly is connected to the first gear and the second gear for driving the first gear and the second gear to rotate.

[0015] Optionally, the roof cleaning device further includes a lateral drive unit and a counterweight unit. The counterweight unit is slidably connected to the first cleaning rack and the second cleaning rack in a direction close to or away from the flipping drive unit. The lateral drive unit is connected to the counterweight unit for driving the counterweight unit to slide, so that the counterweight unit counterweights the first cleaning rack and the second cleaning rack, and the flipping drive unit can drive the first cleaning rack or the second cleaning rack to rotate through the counterweight of the counterweight unit.

[0016] Optionally, the counterweight unit includes a plurality of counterweight blocks. The counterweight blocks are arranged at intervals and slidably connected to the first cleaning rack and the second cleaning rack. The lateral drive unit is connected to each counterweight block for driving each counterweight block to slide, so that each counterweight block counterweights the first cleaning rack and the second cleaning rack.

[0017] Optionally, the lateral driving unit includes a rotary driver and a lead screw. The lead screw is rotatably connected to the first cleaning rack and the second cleaning rack. Each counterweight is threadedly connected to the lead screw. The rotary driver is fixed to the first cleaning rack and the second cleaning rack and connected to the lead screw for driving the lead screw to rotate.

[0018] Optionally, the cleaning unit includes a spray head assembly and a roller brush assembly. The spray head assembly and the roller brush assembly are both connected to the first cleaning rack and the second cleaning rack. The spray head assembly is used to spray cleaning liquid onto the roof, and the roller brush assembly is used to scrub the roof.

[0019] Optionally, the spray head assembly includes two first spray heads and two second spray heads. The two first spray heads are fixedly spaced at one end of the first cleaning rack close to the second cleaning rack for spraying cleaning liquid in the direction of the second cleaning rack. The two second spray heads are fixed at one end of the second cleaning rack close to the first cleaning rack and are respectively located outside the two first spray heads for spraying cleaning liquid in the direction of the first cleaning rack.

[0020] Optionally, the roller brush assembly includes a roller brush, a connecting frame, a first connecting rod, and a second connecting rod. The first cleaning rack and the second cleaning rack are both provided with receiving grooves. The connecting frame is hinged to the first cleaning rack and the second cleaning rack and is located on one side of the receiving groove. The roller brush is rotatably connected to the connecting frame. One ends of the first connecting rod and the second connecting rod are hinged to each other. The other ends of the first connecting rod and the second connecting rod are respectively hinged to the connecting frame, the first cleaning rack, and the second cleaning rack. The connecting frame can drive the roller brush to be received in the receiving groove by rotating in the direction of the receiving groove through the second connecting rod.

[0021] Compared with the prior art, the beneficial effects of the roof cleaning device provided by the present invention include: by arranging a first cleaning frame, a second cleaning frame, a walking unit and a cleaning unit, the second cleaning frame is hinged to the first cleaning frame, the walking unit and the cleaning unit are both installed on the first cleaning frame and the second cleaning frame, when cleaning the roof, the walking unit can drive the first cleaning frame and the second cleaning frame to move along the longitudinal direction of the roof, and when the first cleaning frame and the second cleaning frame move along the longitudinal direction of the roof, the cleaning unit can clean the roof, and since the roof cleaning device is also provided with a flipping drive unit, the flipping drive unit can drive the first cleaning frame and / or the second cleaning frame to rotate, so that the first cleaning frame and the second cleaning frame form a The roof cleaning device is in the expanded state or the bent state, thereby expanding or bending the roof cleaning device to form the expanded state and the bent state of the roof cleaning device. When the roof cleaning device is in the expanded state, it can walk horizontally along the slope of the roof. When it walks to the top corner and the bottom corner of the roof, the flipping drive unit drives the first cleaning rack and / or the second cleaning rack to rotate, so that the roof cleaning device is in the bent state to adapt to the corner of the roof, and switches between the expanded state and the bent state at the corner, so that the roof cleaning device finally climbs over the corner to achieve line change. Through the hinging of the first cleaning rack and the second cleaning rack and the setting of the flipping drive unit, automatic line change of the roof cleaning device can be achieved, which provides convenience for the roof cleaning work. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a roof cleaning device in an unfolded state provided by an embodiment of the present invention.

[0023] Figure 2 Another structural schematic diagram of the roof cleaning device provided by an embodiment of the present invention in an unfolded state.

[0024] Figure 3 A side view of a roof cleaning device provided by an embodiment of the present invention in an unfolded state.

[0025] Figure 4 A side view of a roof cleaning device provided by an embodiment of the present invention in a bent state adapted to a top corner of a roof.

[0026] Figure 5 A side view of a roof cleaning device provided by an embodiment of the present invention in a bent state adapted to a bottom corner of a roof.

[0027] Among them, the reference numerals in the figure are:

[0028] 10—first cleaning rack 11—accommodation tank 20—second cleaning rack

[0029] 30 - walking unit 31 - walking wheel 32 - auxiliary wheel

[0030] 40 - Cleaning unit 41 - Sprinkler head assembly 42 - Roller brush assembly

[0031] 50 - Flipping drive unit 51 - First fixed shaft 52 - Second fixed shaft

[0032] 53 - Flipping drive module 60 - Lateral drive unit 61 - Rotary drive

[0033] 62 - Lead screw 63 - Connecting rod 70 - Counterweight unit

[0034] 71 - Counterweight block 411 - First sprinkler head 412 - Second sprinkler head

[0035] 421 - Roller brush 422 - Connecting frame 423 - First connecting rod

[0036] 424 - Second connecting rod 531 - First gear 532 - Second gear

[0037] 533 - Drive assembly 5331 - Drive motor 5332 - Driving gear

[0038] 5333 - Transmission shaft 5334 - Belt 10a - Roof

[0039] 11a - Inclined plane 12a - Top corner 13a - Bottom corner. Detailed implementation manners

[0040] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] An embodiment of the present invention provides a roof cleaning device for cleaning the roof 10a, including a first cleaning frame 10, a second cleaning frame 20, a traveling unit 30, a cleaning unit 40 and a flipping drive unit 50. The second cleaning frame 20 is hinged to the first cleaning frame 10. The traveling unit 30 is installed on the first cleaning frame 10 and the second cleaning frame 20 and is used to travel longitudinally or laterally on the roof 10a; the cleaning unit 40 is installed on the first cleaning frame 10 and the second cleaning frame 20 and is used to clean the roof 10a when the traveling unit 30 travels longitudinally; the flipping drive unit 50 is used to drive the first cleaning frame 10 and / or the second cleaning frame 20 to rotate, so that the first cleaning frame 10 and the second cleaning frame 20 form an unfolded state or a bent state. The roof cleaning device can change rows through the switching between the unfolded state and the bent state of the first cleaning frame 10 and the second cleaning frame 20, and the lateral travel of the traveling unit 30.

[0042] Specifically, the roof cleaning device is provided with a first cleaning rack 10, a second cleaning rack 20, a traveling unit 30 and a cleaning unit 40. The second cleaning rack 20 is hinged to the first cleaning rack 10. The traveling unit 30 and the cleaning unit 40 are both installed on the first cleaning rack 10 and the second cleaning rack 20. When cleaning the roof 10a, the traveling unit 30 can drive the first cleaning rack 10 and the second cleaning rack 20 to travel longitudinally along the roof 10a. When the first cleaning rack 10 and the second cleaning rack 20 travel longitudinally along the roof 10a, the cleaning unit 40 can clean the roof 10a. Since the roof cleaning device is also provided with a flipping drive unit 50, the flipping drive unit 50 can drive the first cleaning rack 10 and / or the second cleaning rack 20 to rotate, so that the first cleaning rack 10 and the second cleaning rack 20 form an unfolded state or a bent state, thereby unfolding or bending the roof cleaning device to form an unfolded state and a bent state of the roof cleaning device. When the roof cleaning device is in the unfolded state, it can travel laterally along the inclined surface 11a of the roof 10a. When traveling to the top corner 12a and the bottom corner 13a of the roof 10a, the flipping drive unit 50 drives the first cleaning rack and / or the second cleaning rack 20 to rotate, so that the roof cleaning device is in the bent state to adapt to the corner of the roof 10a, and switches between the unfolded state and the bent state at the corner, and finally enables the roof cleaning device to cross the corner and realize line change. Through the hinging of the first cleaning rack 10 and the second cleaning rack 20 and the setting of the flipping drive unit 50, the automatic line change of the roof cleaning device can be realized, which provides convenience for the cleaning work of the roof 10a.

[0043] In this embodiment, the greenhouse roof 10a is a continuously bent structure. This roof cleaning device mainly travels along the longitudinal direction of the roof 10a to clean the surface of the roof 10a, and realizes line change by traveling laterally and crossing the top corner 12a and the bottom corner 13a of the roof 10a.

[0044] It can be understood that the hinging of the first cleaning rack 10 and the second cleaning rack 20 can be realized by setting a spherical hinge cavity at one end of the first cleaning rack 10 close to the second cleaning rack 20 and fixing a sphere hinged to the hinge cavity at one end of the second cleaning rack 20 close to the first cleaning rack 10. Or by fixing a first rod body extending longitudinally at one end of the first cleaning rack 10 close to the second cleaning rack 20 and fixing a second rod body hinged to the first rod body at one end of the second cleaning rack 20 close to the first cleaning rack 10 to realize the hinging of the first cleaning rack 10 and the second cleaning rack 20. Or by fixing a hinge between the first cleaning rack 10 and the second cleaning rack 20 to realize the hinging of the first cleaning rack 10 and the second cleaning rack 20.

[0045] In this embodiment, when cleaning the roof 10a, it can be formed as Figure 3The unfolded state of the roof cleaning device shown, where the first cleaning rack 10 and the second cleaning rack 20 longitudinally travel on one slope 11a of the roof 10a through the traveling unit 30, and the cleaning unit 40 cleans this slope 11a.

[0046] Or form as Figure 4 The bent state of the roof cleaning device shown, where the roof cleaning device straddles the top corner 12a of the roof 10a, and the first cleaning rack 10 longitudinally travels on one slope 11a of the roof 10a through the traveling unit 30, and the second cleaning rack 20 longitudinally travels on the other slope 11a of the roof 10a through the traveling unit 30, simultaneously cleaning the two slopes 11a adjacent to the top corner 12a of the roof 10a.

[0047] Or again as Figure 5 The bent state of the roof cleaning device shown is formed, where the roof cleaning device straddles the bottom corner 13a of the roof 10a, and the first cleaning rack 10 longitudinally travels on one slope 11a of the roof 10a through the traveling unit 30, and the second cleaning rack 20 longitudinally travels on the other slope 11a of the roof 10a through the traveling unit 30, simultaneously cleaning the two slopes 11a adjacent to the bottom corner 13a of the roof 10a.

[0048] In this embodiment, taking the second cleaning rack 20 being on the right side and traveling right for line change as an example. If the roof cleaning device is in the unfolded state and traveling on one slope 11a of the roof 10a, when it needs to cross the top corner 12a of the roof 10a for line change, the traveling unit 30 drives the first cleaning rack 10 and the second cleaning rack 20 to travel horizontally, making the second cleaning rack 20 extend out of the top corner 12a of the roof 10a, and making the top corner 12a of the roof 10a be between the first cleaning rack 10 and the second cleaning rack 20. Then, the flipping drive unit 50 drives the second cleaning rack 20 to rotate towards the roof 10a, fitting with the slope 11a of the next row of the roof 10a, so that the first cleaning rack 10 and the second cleaning rack 20 respectively fit with the two slopes 11a adjacent to the top corner 12a of the roof 10a. Or before changing lines at the top corner 12a, drive the first cleaning rack 10 and the second cleaning rack 20 to rotate simultaneously, making the roof cleaning device form a bent state with a certain included angle, and then move horizontally through this bent state, making the second cleaning rack 20 cross the top corner 12a, and making the top corner 12a be located between the first cleaning rack 10 and the second cleaning rack 20. Then, drive the first cleaning rack 10 and the second cleaning rack 20 to rotate towards the roof 10a simultaneously, respectively fitting with the two slopes 11a adjacent to the top corner 12a of the roof 10a.

[0049] After the first cleaning rack 10 and the second cleaning rack 20 are attached to two inclined surfaces 11a adjacent to the top corner 12a of the roof 10a, the flipping drive mechanism is then used to drive the first cleaning rack 10 to rotate away from the roof 10a, so that the roof cleaning device is in the unfolded state. Then, the traveling unit 30 is used to drive the first cleaning rack 10 and the second cleaning rack 20 to move horizontally, so that the first cleaning rack 10 straddles the top corner 12a of the roof 10a, and thus the line change of the top corner 12a of the roof cleaning device can be achieved.

[0050] When the roof cleaning device is in the unfolded state and travels on one of the inclined surfaces 11a of the roof 10a and needs to cross the bottom corner 13a of the roof 10a for line change, the flipping drive mechanism drives the second cleaning rack 20 to rotate away from the roof 10a, forming a bent state of the roof cleaning device. Then, the traveling unit 30 is used to drive the first cleaning rack 10 to move horizontally, so that the first cleaning rack 10 and the second cleaning rack 20 are respectively attached to two inclined surfaces 11a adjacent to the bottom corner 13a of the roof 10a. Then, the flipping drive mechanism is used to drive the first cleaning rack 10 and the second cleaning rack 20 to rotate simultaneously, forming the unfolded state of the roof cleaning device. Then, the first cleaning rack 10 and the second cleaning rack 20 are moved horizontally until the first cleaning rack 10 straddles the bottom corner 13a of the roof 10a, and thus the line change of the bottom corner 13a of the roof cleaning device can be achieved.

[0051] When the first cleaning rack 10 and the second cleaning rack 20 of the roof cleaning device are respectively traveling on two inclined surfaces 11a adjacent to the top corner 12a for line change during cleaning, it is only necessary to use the flipping drive mechanism to drive the first cleaning rack 10 to rotate away from the roof 10a, so that the roof cleaning device is in the unfolded state. Then, the traveling unit 30 is used to drive the first cleaning rack 10 and the second cleaning rack 20 to move horizontally, so that the first cleaning rack 10 straddles the top corner 12a of the roof 10a, and thus the line change of the top corner 12a of the roof cleaning device can be achieved. Then, by forming a bent state and attaching to two inclined surfaces 11a adjacent to the top corner 12a, the two inclined surfaces 11a adjacent to the bottom corner 13a of the roof 10a can be cleaned simultaneously.

[0052] It can be understood that the traveling unit 30 can be any traveling device that can drive the first cleaning rack 10 and the second cleaning rack 20 to travel longitudinally and horizontally.

[0053] In one of the embodiments, the traveling unit 30 includes traveling wheels 31. The traveling wheels 31 are installed at one end of the first cleaning rack 10 and the second cleaning rack 20 that are far away from each other. The flipping drive unit 50 is connected to one end of the first cleaning rack 10 and the second cleaning rack 20 that are close to each other. The flipping drive unit 50 can use the traveling wheels 31 as the support points to drive the first cleaning rack 10 and the second cleaning rack 20 to rotate, forming the unfolded state or the bent state of the roof cleaning device.

[0054] Specifically, the walking wheels 31 are installed at the mutually remote ends of the first cleaning rack 10 and the second cleaning rack 20, and the flipping drive unit 50 is connected to the mutually adjacent ends of the first cleaning rack 10 and the second cleaning rack 20. By driving the mutually adjacent ends of the first cleaning rack 10 and the second cleaning rack 20, the first cleaning rack 10 and the second cleaning rack 20 can be simultaneously rotated with the walking wheels 31 as the fulcrum. Furthermore, when the roof cleaning device is in the unfolded state and fits against the inclined surface 11a of the roof 10a, the first cleaning rack 10 and the second cleaning rack 20 can be driven to rotate simultaneously to form a bent state of the roof cleaning device, and the second cleaning rack 20 can cross the top corner 12a of the roof 10a through this bent state, facilitating the roof cleaning device to cross the top corner 12a for line change. And when the roof cleaning device is in the bent state and fits against the inclined surface 11a adjacent to the bottom corner 13a of the roof 10a, the first cleaning rack 10 and the second cleaning rack 20 can be driven to rotate simultaneously to form an unfolded state of the roof cleaning device, facilitating the roof cleaning device to cross the bottom corner 13a for line change.

[0055] In this embodiment, the walking unit 30 drives the first cleaning rack 10 and the second cleaning rack through the walking wheels 31 to realize the longitudinal and lateral movement of the first cleaning rack 10 and the second cleaning rack 20 along the roof 10a. The walking unit 30 further includes auxiliary wheels 32, and the auxiliary wheels 32 are installed at the mutually adjacent ends of the first cleaning rack 10 and the second cleaning rack 20. When the first cleaning rack 10 and the second cleaning rack 20 move, the auxiliary wheels 32 can be driven to roll.

[0056] It can be understood that the flipping drive unit 50 can be a drive cylinder fixedly connected to the ends of the first cleaning rack 10 and the second cleaning rack 20. By driving the second cleaning rack 20, the drive cylinder can drive the second cleaning rack 20 to rotate. At the same time, the first cleaning rack 10 rotates under the reverse acting force of the second cleaning rack 20.

[0057] In one of the embodiments, the flipping drive unit 50 includes a first fixed shaft 51, a second fixed shaft 52, and a flipping drive module 53. The first fixed shaft 51 and the second fixed shaft 52 are respectively fixed to the mutually adjacent ends of the first cleaning rack 10 and the second cleaning rack 20 and extend longitudinally. The flipping drive module 53 is connected to the first fixed shaft 51 and the second fixed shaft 52 and is used to drive the first fixed shaft 51 and / or the second fixed shaft 52 to rotate, so that the first fixed shaft 51 and / or the second fixed shaft 52 respectively drive the first cleaning rack 10 and / or the second cleaning rack 20 to rotate.

[0058] Specifically, when switching between the deployed state and the bent state of the roof cleaning device, the flipping drive module 53 can drive the first fixed shaft 51 to rotate, causing the first fixed shaft 51 to drive the first cleaning frame 10 to rotate with the second cleaning frame 20 as the fulcrum. The flipping drive module 53 can drive the second fixed shaft 52 to rotate, causing the second fixed shaft 52 to drive the second cleaning frame 20 to rotate with the first cleaning frame 10 as the fulcrum. When the flipping drive module 53 drives the first fixed shaft 51 and the second fixed shaft 52 to rotate simultaneously, the first fixed shaft 51 and the second fixed shaft 52 can drive the first cleaning frame 10 and the second cleaning frame 20 to rotate simultaneously with the walking wheels 31 as the fulcrums. The switching between the deployed state and the bent state of the cleaning device can be achieved through the above three situations.

[0059] In this embodiment, the flipping drive module 53 includes a first gear 531, a second gear 532, and a drive assembly 533. The first gear 531 and the second gear 532 are respectively fixed to the first fixed shaft 51 and the second fixed shaft 52. The drive assembly 533 is connected to the first gear 531 and the second gear 532 and is used to drive the first gear 531 and the second gear 532 to rotate. Specifically, through the connection of the drive assembly 533 with the first gear 531 and the second gear 532 fixed to the first fixed shaft 51 and the second fixed shaft 52, when switching between the deployed state and the bent state of the roof cleaning device, the drive assembly 533 generates a driving force for rotating the first gear 531 and the second gear 532, and thus the first fixed shaft 51 and the second fixed shaft 52 can generate a rotational driving force for driving the first cleaning frame 10 and the second cleaning frame 20, driving the first cleaning frame 10 and / or the second cleaning frame 20 to flip, and realizing the switching between the deployed state and the bent state of the cleaning device.

[0060] In this embodiment, further, the drive assembly 533 includes a drive motor 5331, a driving gear 5332, a transmission shaft 5333, and a belt 5334. The drive motor 5331 is located between the first cleaning frame 10 and the second cleaning frame 20. The driving gear 5332 is fixed to the shaft of the drive motor 5331. One end of the transmission shaft 5333 is located between the first gear 531 and the second gear 532 and meshes with the first gear 531 and the second gear 532. The other end of the transmission shaft 5333 extends to one side of the driving gear 5332. The belt 5334 is sleeved on the driving gear 5332 and the transmission shaft 5333.

[0061] Specifically, the drive motor 5331 can drive the driving gear 5332 to rotate, driving the belt 5334 to rotate. The belt 5334 drives the transmission shaft 5333 to rotate, and then transmits the rotation to the first gear 531 and the second gear 532, causing the first fixed shaft 51 and the second fixed shaft 52 to generate a rotational force.

[0062] In one of the embodiments, the roof cleaning device further includes a lateral driving unit 60 and a counterweight unit 70. The counterweight unit 70 is slidably connected to the first cleaning rack 10 and the second cleaning rack 20 in a direction approaching or departing from the flipping driving unit 50. The lateral driving unit 60 is connected to the counterweight unit 70 and is configured to drive the counterweight unit 70 to slide, so as to counterweight the first cleaning rack 10 and the second cleaning rack 20. The flipping driving unit 50 can drive the first cleaning rack 10 or the second cleaning rack 20 to rotate through the counterweight of the counterweight unit 70.

[0063] Specifically, when the lateral driving unit 60 drives the counterweight unit 70 to move towards the end where the first cleaning rack 10 and the second cleaning rack 20 approach each other, the center of gravity of the first cleaning rack 10 and the second cleaning rack 20 can be offset towards the direction of the end where they approach each other. When the lateral driving unit 60 drives the counterweight unit 70 to move towards the end where the first cleaning rack 10 and the second cleaning rack 20 are away from each other, the center of gravity of the first cleaning rack 10 and the second cleaning rack 20 can be offset towards the direction of the end where they are away from each other.

[0064] Through the arrangement of the lateral driving unit 60 and the counterweight unit 70, when switching between the deployed state and the bent state of the roof cleaning device, the lateral driving unit 60 can make the positions of the counterweight unit 70 of the first cleaning rack 10 and the counterweight unit 70 of the second cleaning rack 20 the same, so that the centers of gravity of the first cleaning rack 10 and the second cleaning rack 20 are consistent. The first cleaning rack 10 can then be flipped simultaneously with the walking wheels 31 as the fulcrum under the drive of the flipping driving unit 50. If the lateral driving unit 60 drives the counterweight unit 70 of the first cleaning rack 10 to the end of the first cleaning rack 10 close to the second cleaning rack 20 and drives the counterweight unit 70 of the second cleaning rack 20 to the end of the second cleaning rack 20 away from the first cleaning rack 10, the center of gravity of the first cleaning rack 10 can be transferred to the end close to the second cleaning rack 20, and the center of gravity of the second cleaning rack 20 can be transferred to the end away from the first cleaning rack 10. When the flipping driving unit 50 drives the first cleaning rack 10 and the second cleaning rack 20 simultaneously, since the center of gravity of the first cleaning rack 10 is close to the rotating end of the first cleaning rack 10, the flipping driving unit 50 will only drive the first cleaning rack 10 to rotate, while the second cleaning rack 20 will not rotate. Conversely, if the lateral driving unit 60 drives the counterweight unit 70 of the first cleaning rack 10 to the end of the first cleaning rack 10 away from the second cleaning rack 20 and drives the counterweight unit 70 of the second cleaning rack 20 to the end of the second cleaning rack 20 close to the first cleaning rack 10, when the flipping driving unit 50 drives the first cleaning rack 10 and the second cleaning rack 20 simultaneously, only the second cleaning rack 20 will be driven to rotate, while the first cleaning rack 10 will not rotate. Finally, the flipping of the first cleaning rack 10 and the second cleaning rack 20 is controlled through the counterweight of the counterweight unit 70.

[0065] In this embodiment, the first cleaning rack 10 and the second cleaning rack 20 have the same structure and equal weight.

[0066] In one of the embodiments, the counterweight unit 70 includes a plurality of counterweight blocks 71. The counterweight blocks 71 are arranged at intervals and slidably connected to the first cleaning rack 10 and the second cleaning rack 20. The lateral driving unit 60 is connected to each counterweight block 71 and is used to drive each counterweight block 71 to slide so as to counterweight the first cleaning rack 10 and the second cleaning rack 20. Specifically, by arranging the counterweight blocks 71 as several blocks arranged at intervals in the lateral direction of the first cleaning rack 10 and the second cleaning rack 20, the proportion of the counterweight unit 70 in the first cleaning rack 10 and the second cleaning rack 20 can be increased, thereby enhancing the influence degree of the counterweight unit 70 on the center of gravity of the first cleaning rack 10 and the second cleaning rack 20, and facilitating the control of the flipping of the first cleaning rack 10 and the second cleaning rack 20.

[0067] In one of the embodiments, the lateral driving unit 60 includes a rotary driver 61 and a lead screw 62. The lead screw 62 is rotatably connected to the first cleaning rack 10 and the second cleaning rack 20. Each counterweight block 71 is threadedly connected to the lead screw 62. The rotary driver 61 is fixed to the first cleaning rack 10 and the second cleaning rack 20 and is connected to the lead screw 62 for driving the lead screw 62 to rotate. Specifically, the rotary driver 61 drives the lead screw 62 to rotate, and then can drive all the counterweight blocks 71 to slide along the first cleaning rack 10 and the second cleaning rack 20, realizing the counterweight of the first cleaning rack 10 and the second cleaning rack 20.

[0068] In one of the embodiments, the lateral driving unit 60 includes a driving cylinder (not marked in the figure) and a plurality of connecting rods 63 hinged in sequence. The driving cylinder is fixed to the first cleaning rack 10 and the second cleaning rack 20. Each connecting rod 63 is rotatably connected to each counterweight block 71 respectively. The connecting rod 63 at the edge is hinged to the driving end of the driving cylinder. With this setting, the driving cylinder drives the connecting rod 63 at the edge to rotate, and then can drive all the connecting rods 63 to rotate, finally realizing the sliding of each counterweight block 71 and realizing the counterweight of the first cleaning rack 10 and the second cleaning rack 20.

[0069] In the present embodiment, in the process of changing lines with the second cleaning rack 20 being on the right side and walking to the right, when the roof cleaning device climbs over the top corner 12a of the roof 10a, the lateral driving unit 60 first drives the counterweight unit 70 of the first cleaning rack 10 to be the same as the counterweight unit 70 of the second cleaning rack 20, and the flip driving unit 50 drives the first cleaning rack 10 and the second cleaning rack 20 to flip simultaneously to form a bent state of the roof cleaning device, and then the second cleaning rack 20 climbs over the top corner 12a of the roof 10a, and the top corner 12a is located between the first cleaning rack 10 and the second cleaning rack 20, and then the first cleaning rack 10 and the second cleaning rack 20 are driven to rotate simultaneously toward the direction of the roof 10a, and respectively fit with the two inclined surfaces 11a adjacent to the top corner 12a of the roof 10a. After the first cleaning rack 10 and the second cleaning rack 20 are in contact with the two inclined surfaces 11a adjacent to the top corner 12a of the roof 10a, the lateral driving unit 60 drives the counterweight block 71 of the second cleaning rack 20 to slide in a direction away from the first cleaning block, and the counterweight block 71 of the first cleaning rack 10 slides in the direction of the second cleaning block, so that the flip driving mechanism drives the first cleaning rack 10 to rotate in a direction away from the roof 10a, so that the roof cleaning device is in an unfolded state, and then the walking unit 30 drives the first cleaning rack 10 and the second cleaning rack 20 to move horizontally, so that the first cleaning rack 10 crosses the top corner 12a of the roof 10a, and the top corner 12a of the roof cleaning device can be changed.

[0070] When the roof cleaning device climbs over the top corner 12a of the roof 10a, the lateral drive unit 60 drives the counterweight block 71 of the second cleaning frame 20 to slide in the direction close to the first cleaning block, and the counterweight block 71 of the second cleaning frame 20 slides in the direction away from the second cleaning block, so that the flipping drive mechanism drives the second cleaning frame 20 to rotate in the direction away from the roof 10a, forming a bent state of the roof cleaning device, and then the walking unit 30 drives the first cleaning frame 10 to walk horizontally, so that the first cleaning frame 10 and the second cleaning frame 20 are respectively fitted with two inclined surfaces 11a adjacent to the bottom corner 13a of the roof 10a, and then the lateral drive unit 60 drives the counterweight unit 70 of the first cleaning frame 10 to have the same position as the counterweight unit 70 of the second cleaning frame 20, and the flipping drive mechanism drives the first cleaning frame 10 and the second cleaning frame 20 to rotate simultaneously, forming an expanded state of the roof cleaning device, and then the first cleaning frame 10 and the second cleaning frame 20 walk horizontally until the first cleaning frame 10 crosses the bottom corner 13a of the roof 10a, so that the bottom corner 13a of the roof cleaning device can be changed.

[0071] In one of the embodiments, the cleaning unit 40 includes a spray head assembly 41 and a roller brush assembly 42. The spray head assembly 41 and the roller brush assembly 42 are both connected to the first cleaning rack 10 and the second cleaning rack 20. The spray head assembly 41 is used to spray cleaning liquid onto the roof 10a, and the roller brush assembly 42 is used to scrub the roof 10a. Specifically, through the cleaning liquid sprayed onto the roof 10a by the spray head assembly 41 and the scrubbing of the roof 10a by the roller brush assembly 42, effective cleaning of the roof 10a can be achieved.

[0072] In one of the embodiments, the spray head assembly 41 includes two first spray heads 411 and two second spray heads 412. The two first spray heads 411 are fixedly spaced at one end of the first cleaning rack 10 close to the second cleaning rack 20 for spraying cleaning liquid in the direction of the second cleaning rack 20. The two second spray heads 412 are fixed at one end of the second cleaning rack 20 close to the first cleaning rack 10 and are respectively located outside the two first spray heads 411 for spraying cleaning liquid in the direction of the first cleaning rack 10. Specifically, through the above arrangement of the first spray heads 411 and the second spray heads 412, full coverage of cleaning can be achieved while ensuring that the water flows ejected between the first spray heads 411 and the second spray heads 412 do not interfere with each other.

[0073] In this embodiment, taking the central axis length between the first cleaning rack 10 and the second cleaning rack 20 as 32 cm as an example, since this part is not cleaned by the brush roller shaft, in order to ensure effective cleaning of this part, the overlapping cleaning part of the opposing first spray heads and second spray heads should reach 32 cm. Since the cleaning inclined plane 11a is parallel to the cleaning machine, the structural level is studied. Let the spray angle, inclination angle, and rotation angle of the spray head be α, β, and γ respectively. Then the width B (unit: m) of the water flow ejection should satisfy the following formula:

[0074]

[0075] E2 = Bcosr

[0076] D = E2 - E

[0077] In the formula, α represents the spray angle;

[0078] In the formula, β represents the inclination angle;

[0079] In the formula, γ represents the rotation angle;

[0080] In the formula, B represents the width of the water flow ejection, unit: m;

[0081] In the formula, H represents the horizontal distance from the first spray head 411 and the second spray head 412 to the central axis, unit: m;

[0082] In the formula, E2 represents the effective ejection width of a single first spray head 411 and second spray head 412, unit: m;

[0083] In the formula, E represents the distance between adjacent first nozzles 411 and second nozzles 412, unit: m.

[0084] To ensure that the final overlap degree D > 32 cm, and comprehensively considering effects such as water consumption and impact force, the installation angles of the first nozzles 411 and the second nozzles 412 of α = 30°, β = 18°, and γ = 15° are the best.

[0085] In this embodiment, further, the spray angles of the first nozzles 411 and the second nozzles 412 are 30°, the tilt angles are 18°, and the rotation angles are 15°. To ensure that the water flows ejected between the first nozzles 411 and the second nozzles 412 do not interfere with each other, full coverage of cleaning is achieved.

[0086] In this embodiment, the roller brush assembly 42 includes a roller brush 421, a connecting frame 422, a first connecting rod 423, and a second connecting rod 424. Both the first cleaning frame 10 and the second cleaning frame 20 are provided with receiving grooves 11. The connecting frame 422 is hinged to the first cleaning frame 10 and the second cleaning frame 20 and is located on one side of the receiving groove 11. The roller brush 421 is rotatably connected to the connecting frame 422. One ends of the first connecting rod 423 and the second connecting rod 424 are hinged to each other, and the other ends of the first connecting rod 423 and the second connecting rod 424 are respectively hinged to the connecting frame 422 and the first cleaning frame 10 and the second cleaning frame 20. The connecting frame 422 can drive the roller brush 421 to be received in the receiving groove 11 through the rotation of the second connecting rod 424 in the direction of the receiving groove 11. Specifically, the roller brush 421 is received in the receiving groove 11 through the rotation of the connecting frame 422, thereby facilitating the line change of the cleaning device.

[0087] In this embodiment, further, the roller brush assembly 42 further includes a driving member (not marked in the figure). The driving member is fixed to the side wall of the receiving groove 11 and is hinged to the second connecting rod 424. By driving the second connecting rod 424 to rotate in the direction of the receiving groove 11, the driving member can drive the first connecting rod 423 and the connecting frame 422 to rotate in the direction of the receiving groove 11, and finally receive the roller brush 421 in the receiving groove 11.

[0088] The specific embodiments of the present invention described above do not constitute a limitation to the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A roof cleaning device for cleaning roofs, characterized in that, Comprising: A first cleaning rack; A second cleaning rack, hinged to the first cleaning rack, A traveling unit installed on the first cleaning rack and the second cleaning rack for traveling longitudinally or transversely on the roof; A cleaning unit installed on the first cleaning rack and the second cleaning rack for cleaning the roof when the traveling unit travels longitudinally; A flipping drive unit for driving the first cleaning rack and / or the second cleaning rack to rotate, so that the first cleaning rack and the second cleaning rack form an unfolded state or a bent state, and capable of enabling the first cleaning rack and the second cleaning rack to change rows during the switching between the unfolded state and the bent state; The traveling unit includes traveling wheels, the traveling wheels are installed at one end of the first cleaning rack and the second cleaning rack that are away from each other, the flipping drive unit is connected to one end of the first cleaning rack and the second cleaning rack that are close to each other, and the flipping drive unit can drive the first cleaning rack and the second cleaning rack to rotate with the traveling wheels as the support points, forming the unfolded state or the bent state of the roof cleaning device; It further includes a transverse drive unit and a counterweight unit, the counterweight unit is slidably connected to the first cleaning rack and the second cleaning rack in a direction close to or away from the flipping drive unit, the transverse drive unit is connected to the counterweight unit for driving the counterweight unit to slide, so that the counterweight unit counterweights the first cleaning rack and the second cleaning rack, and the flipping drive unit can drive the first cleaning rack or the second cleaning rack to rotate through the counterweight of the counterweight unit.

2. The roof cleaning device according to claim 1, characterized in that, The flipping drive unit includes a first fixed shaft, a second fixed shaft and a flipping drive module, the first fixed shaft and the second fixed shaft are respectively fixed to one end of the first cleaning rack and the second cleaning rack that are close to each other and extend longitudinally, the flipping drive module is connected to the first fixed shaft and the second fixed shaft for driving the first fixed shaft and / or the second fixed shaft to rotate, so that the first fixed shaft and / or the second fixed shaft respectively drive the first cleaning rack and / or the second cleaning rack to rotate.

3. The roof cleaning device according to claim 2, wherein The flipping drive module includes a drive assembly, a first gear and a second gear, the first gear and the second gear are respectively fixed to the first fixed shaft and the second fixed shaft, and the drive assembly is connected to the first gear and the second gear for driving the first gear and the second gear to rotate.

4. The roof cleaning device according to claim 1, characterized in that The counterweight unit includes a plurality of counterweight blocks, each counterweight block is arranged at intervals and slidably connected to the first cleaning rack and the second cleaning rack, and the transverse drive unit is connected to each counterweight block for driving each counterweight block to slide, so that each counterweight block counterweights the first cleaning rack and the second cleaning rack.

5. The roof cleaning device according to claim 4, characterized in that, The transverse drive unit includes a rotary driver and a lead screw, the lead screw is rotatably connected to the first cleaning rack and the second cleaning rack, each counterweight block is threadedly connected to the lead screw, and the rotary driver is fixed to the first cleaning rack and the second cleaning rack and connected to the lead screw for driving the lead screw to rotate.

6. The roof cleaning device according to any one of claims 1 to 5, characterized in that, The cleaning unit includes a spray head assembly and a roller brush assembly. Both the spray head assembly and the roller brush assembly are connected to the first cleaning rack and the second cleaning rack. The spray head assembly is used to spray cleaning liquid onto the roof, and the roller brush assembly is used to scrub the roof.

7. The roof cleaning device according to claim 6, characterized in that, The spray head assembly includes two first spray heads and two second spray heads. The two first spray heads are fixedly spaced at one end of the first cleaning rack close to the second cleaning rack and are used to spray cleaning liquid in the direction of the second cleaning rack. The two second spray heads are fixed at one end of the second cleaning rack close to the first cleaning rack and are respectively located outside the two first spray heads and are used to spray cleaning liquid in the direction of the first cleaning rack.

8. The roof cleaning device according to claim 6, characterized in that The roller brush assembly includes a roller brush, a connecting frame, a first connecting rod, and a second connecting rod. The first cleaning rack and the second cleaning rack are both provided with receiving grooves. The connecting frame is hinged to the first cleaning rack and the second cleaning rack and is located on one side of the receiving groove. The roller brush is rotatably connected to the connecting frame. One ends of the first connecting rod and the second connecting rod are hinged to each other. The other ends of the first connecting rod and the second connecting rod are respectively hinged to the connecting frame, the first cleaning rack, and the second cleaning rack. The connecting frame can drive the roller brush to be received in the receiving groove by the rotation of the second connecting rod in the direction of the receiving groove.

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