Pool cleaning robot

Abstract

The utility model provides a pool cleaning robot which comprises a machine body provided with a water inlet and a water outlet; the snorkeling module is arranged on the machine body and used for controlling the pool cleaning robot to ascend or descend in the pool; the track is arranged on the machine body, the lower surface of the track downwards exceeds the lower surface of the machine body, and at least one part of the upper part of the track is shielded by the machine body; when the crawler belt is in contact with the surface of the pool, the pool cleaning robot is driven to move through friction force between the crawler belt and the surface of the pool; when the crawler belt is separated from the surface of the pool, the upper portion of the crawler belt pokes liquid in the pool to generate first acting force, the lower portion of the crawler belt pokes liquid in the pool to generate second acting force, the first acting force is smaller than the second acting force, and first driving force is formed through the difference value of the first acting force and the second acting force to drive the pool cleaning robot to move. The pool cleaning robot has the advantages that the number of parts is small, the structure is simple, and the cost is low.

Description

Technical Field

[0001] The present application belongs to the field of underwater cleaning technology, and in particular relates to a pool cleaning robot. Background Art

[0002] In the related art, a pool cleaning robot is moved on the surface of a pool by setting tracks. The pool cleaning robot also needs to be driven by a water jet, a propeller, or the water flow from a water pump outlet so that the pool cleaning robot can move while floating in the liquid. This results in a complex structure of the pool cleaning robot, a large number of parts, and a high cost. Utility Model Content

[0003] The present application provides a pool cleaning robot that can move on the surface of a pool and float in the water by means of tracks, and has the advantages of a small number of parts, a simple structure, and low cost.

[0004] To solve the above technical problems, an embodiment of the present application proposes a pool cleaning robot, comprising: a body, provided with a water inlet and a water outlet; a snorkeling module, provided on the body, for controlling the pool cleaning robot to rise or fall in the pool; a track, provided on the body, the lower surface of the track extending downwardly beyond the lower surface of the body, and at least a portion of the upper portion of the track being blocked by the body; wherein, when the track contacts the surface of the pool, the pool cleaning robot is driven to move by the friction force between the track and the surface of the pool; when the track is separated from the surface of the pool, the upper portion of the track pokes the liquid in the pool to generate a first force, and the lower portion of the track pokes the liquid in the pool to generate a second force, the first force being less than the second force, and the difference between the first force and the second force forms a first driving force to drive the pool cleaning robot to move.

[0005] In some embodiments of the present application, the body has a first direction and a second direction, and the first direction, the second direction and the height of the body are perpendicular to each other; there are multiple tracks, and the multiple tracks include a first track and a second track, and the first track and the second track are arranged on opposite sides of the body in the first direction, and the track extends along the second direction; wherein, when the track contacts the surface of the pool, the friction between the track and the surface of the pool drives the pool cleaning robot to move along the second direction; when the track is separated from the surface of the pool, the driving force generated by the track stirring the liquid in the pool drives the pool cleaning robot to move along the second direction.

[0006] In some embodiments of the present application, the machine body includes: a main body, the main body is provided with the water inlet and the water outlet, the first crawler and the second crawler are arranged on opposite sides of the main body in the first direction; a shielding edge, the shielding edge is arranged on opposite sides of the main body in the second direction, the shielding edge is located above the crawler and is spaced apart from the crawler, and is used to shield at least a part of the upper part of the crawler.

[0007] In some embodiments of the present application, a side of the first track facing away from the second track extends beyond the blocking edge, and a side of the second track facing away from the first track extends beyond the blocking edge.

[0008] In some embodiments of the present application, both ends of the crawler track extend beyond the machine body in the second direction.

[0009] In some embodiments of the present application, the pool cleaning robot further includes: a roller, rotatably provided on the body and located on one side of the body in the second direction, the water inlet and the roller are located on the same side of the body, and when the roller rotates relative to the body, it drives the liquid in the pool to flow into the water inlet.

[0010] In some embodiments of the present application, at least a portion of the upper part of the drum is blocked by the body; when the track is separated from the surface of the pool, the upper part of the drum stirs the liquid in the pool to generate a third force, and the lower part of the drum stirs the liquid in the pool to generate a fourth force, the third force is smaller than the fourth force, and a second driving force is formed by the difference between the third force and the fourth force, and the first driving force and the second driving force jointly drive the pool cleaning robot to move.

[0011] In some embodiments of the present application, a plurality of flexible paddles are provided on the outer surface of the drum, and the plurality of flexible paddles are arranged at intervals along the circumference of the drum, each of the flexible paddles extends axially along the drum, and at least one of the flexible paddles extends downward beyond the track.

[0012] In some embodiments of the present application, the drum extends beyond the machine body in the first direction.

[0013] In some embodiments of the present application, there are multiple rollers, and the multiple rollers are arranged along the axial direction of the roller.

[0014] In the present application, the pool cleaning robot is provided with tracks, and at least a portion of the upper portion of the tracks is covered by the body. Without affecting the pool cleaning robot's movement on the surface of the pool through the tracks, the pool cleaning robot can also move the liquid by moving the tracks when floating in the liquid. There is no need to set up other additional drive structures, which reduces the number of parts of the pool cleaning robot, makes the structure simpler, and reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0016] Figure 1 is a schematic diagram of the contact between the track of the pool cleaning robot and the surface of the pool according to an embodiment of the present application;

[0017] Figure 2 is a schematic diagram of the track of the pool cleaning robot according to an embodiment of the present application being separated from the surface of the pool;

[0018] Figure 3 This is one of the structural diagrams of the pool cleaning robot according to an embodiment of the present application;

[0019] Figure 4 This is the second structural diagram of the pool cleaning robot according to an embodiment of the present application;

[0020] Figure 5 This is the third structural diagram of the pool cleaning robot according to an embodiment of the present application;

[0021] Figure 6 This is the fourth structural diagram of the pool cleaning robot according to an embodiment of the present application;

[0022] Figure 7 It is a cross-sectional view of the pool cleaning robot according to an embodiment of the present application.

[0023] Description of Figure Numbers:

[0024] 1. Pool cleaning robot; 2. Pool; 3. Pool wall; 4. Bottom wall; 5. Liquid;

[0025] 100, machine body; 101, water inlet; 102, water outlet; 110, main body; 120, shielding edge;

[0026] 200, snorkeling module;

[0027] 300, crawler; 310, first crawler; 320, second crawler; 330, lug;

[0028] 400, roller; 410, flexible pick;

[0029] 500. Filter module. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of this application clearer, the following part will further describe the embodiments of this application in detail with reference to the accompanying drawings.

[0031] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application, as detailed in the appended claims.

[0032] In the description of this application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0034] The following describes a pool cleaning robot 1 according to an embodiment of the present application with reference to the accompanying drawings.

[0035] like Figures 1-4 As shown, the pool cleaning robot 1 according to an embodiment of the present application includes a body 100 , a snorkeling module 200 and a crawler track 300 .

[0036] The body 100 is provided with a water inlet 101 and a water outlet 102. For example, the pool cleaning robot 1 further includes a filter module 500. The liquid 5 in the pool 2 enters the filter module 500 through the water inlet 101. The filter module 500 filters the liquid 5, and most of the waste in the liquid 5 is stored in the filter module 500. The filtered liquid 5 then flows out of the body 100 through the water outlet 102. The filter module 500 is movable relative to the body 100. By removing the filter module 500 from the body 100, the waste in the filter module 500 can be processed. Alternatively, the filter module 500 and the body 100 can be integrated into one structure to improve the connection strength between the filter module 500 and the body 100.

[0037] The snorkeling module 200 is provided on the body 100 and is used to control the pool cleaning robot 1 to rise or fall in the pool 2. The snorkeling module 200 may be a float chamber, and the volume of the float chamber and the amount of liquid in the float chamber are adjusted to achieve the rise or fall of the pool cleaning robot 1 in the pool 2. Alternatively, the snorkeling module 200 may be a winch solution, and the rotation of the winch controls the length of the rope, thereby controlling the position of the piston, to achieve the purpose of adjusting the amount of liquid, so that the pool cleaning robot 1 can rise or fall in the pool 2. Alternatively, the snorkeling module 200 may be a diaphragm pump solution, and the diaphragm pump is used to pump or drain water to achieve the purpose of adjusting the amount of liquid.

[0038] Compared with the existing technology of pulling the pool cleaning robot out of the pool by setting up structures such as pull ropes on the shore, the present application integrates the snorkeling module 200 into the pool cleaning robot 1, eliminating the need to set up additional structures on the shore to pull the pool cleaning robot 1, reducing costs and eliminating the need to occupy excess shore space.

[0039] The track 300 is provided on the body 100 , and the lower surface of the track 300 extends downwardly beyond the lower surface of the body 100 . Thus, when the pool cleaning robot 1 dives into the liquid 5 , the track 300 will contact the surface of the pool 2 before the body 100 .

[0040] At least a portion of the upper portion of the track 300 is obscured by the body 100. When the track 300 contacts the surface of the pool 2, the friction between the track 300 and the surface of the pool 2 drives the pool cleaning robot 1 to move. When the track 300 separates from the surface of the pool 2, the upper portion of the track 300 moves the liquid 5 in the pool 2 to generate a first force, and the lower portion of the track 300 moves the liquid 5 in the pool 2 to generate a second force. The first force is less than the second force, and the difference between the first and second forces forms a first driving force to drive the pool cleaning robot 1 to move.

[0041] It should be noted that the surface of the pool 2 includes the pool wall 3 and the bottom wall 4 of the pool 2 .

[0042] When the track 300 is separated from the surface of the pool 2, if the upper part of the track 300 moves forward and the lower part of the track 300 moves backward, the upper part of the track 300 drives the liquid 5 forward, and the first force generated by the liquid 5 on the track 300 is backward, and the lower part of the track 300 drives the liquid 5 backward, and the second force generated by the liquid 5 on the track 300 is forward. The difference between the first force and the second force forms the first driving force forward, so the pool cleaning robot 1 moves forward; if the upper part of the track 300 moves backward and the lower part of the track 300 moves forward, at this time the upper part of the track 300 drives the liquid 5 backward, and the first force generated by the liquid 5 on the track 300 is forward, and the lower part of the track 300 drives the liquid 5 forward, and the second force generated by the liquid 5 on the track 300 is backward. The difference between the first force and the second force forms the first driving force backward, so the pool cleaning robot 1 moves backward.

[0043] As can be seen from this, by changing the moving direction of the crawler belt 300 , the moving direction of the machine body 100 can be changed.

[0044] For example, the outer peripheral surface of the track 300 can be provided with a plurality of protrusions 330, and the plurality of protrusions 330 are arranged at intervals along the circumference of the track 300. On the one hand, the contact area between the track 300 and the liquid 5 is increased. When the track 300 is separated from the surface of the pool 2, the first driving force is greater, thereby increasing the moving speed of the pool cleaning robot 1. On the other hand, when the track 300 contacts the surface of the pool 2, the protrusions 330 contact the surface of the pool 2, which is conducive to adjusting the friction between the track 300 and the surface of the pool 2.

[0045] In the embodiment of the present application, the pool cleaning robot 1 is provided with a track 300, and at least a portion of the upper portion of the track 300 is shielded by the body 100. Without affecting the surface movement of the pool 2 by the track 300, the pool cleaning robot 1 can also move the liquid 5 by the track 300 when floating in the liquid 5. There is no need to set up other additional driving structures, which reduces the number of parts of the pool cleaning robot 1, makes the structure simpler, and reduces the cost.

[0046] like Figure 3-Figure 6As shown, the body 100 has a first direction (indicated by arrow A in the accompanying drawings) and a second direction (indicated by arrow B in the accompanying drawings). The first direction, the second direction, and the height of the body 100 (indicated by arrow C in the accompanying drawings) are perpendicular to each other. Multiple tracks 300 are provided, including a first track 310 and a second track 320. The first track 310 and the second track 320 are disposed on opposite sides of the body 100 in the first direction, and the tracks 300 extend along the second direction. When the tracks 300 are in contact with the surface of the pool 2, the friction between the tracks 300 and the surface of the pool 2 drives the pool cleaning robot 1 in the second direction. When the tracks 300 are separated from the surface of the pool 2, the driving force generated by the tracks 300 moving the liquid 5 in the pool 2 drives the pool cleaning robot 1 in the second direction.

[0047] That is to say, when the track 300 moves relative to the body 100, it will drive the body 100 to move along the second direction. Since the first track 310 and the second track 320 are arranged on opposite sides of the body 100 in the first direction, the force on the opposite sides of the body 100 in the first direction is more evenly distributed, and the pool cleaning robot 1 has higher movement stability.

[0048] In addition, by providing a plurality of tracks 300, the overall surface area of ​​the tracks 300 is effectively increased. When the pool cleaning robot 1 moves along the surface of the pool 2, the contact area between the tracks 300 and the surface of the pool 2 is larger, and the friction between the tracks 300 and the surface of the pool 2 is greater, so the moving speed and stability of the pool cleaning robot 1 can be improved; when the pool cleaning robot 1 is separated from the surface of the pool 2, each track 300 can generate a first driving force for driving the pool cleaning robot 1 to move, the driving force received by the pool cleaning robot 1 is greater, and the moving speed and stability of the pool cleaning robot 1 can be improved.

[0049] like Figure 4-Figure 6 As shown, the machine body 100 includes a main body 110 and a shielding edge 120 .

[0050] The main body 110 is provided with a water inlet 101 and a water outlet 102. The first crawler 310 and the second crawler 320 are respectively provided on opposite sides of the main body 100 in the first direction. The shielding edge 120 is provided on opposite sides of the main body 110 in the second direction.

[0051] Among them, the main body 110 and the shielding edge 120 can be formed as one piece. At this time, an arc-shaped transition can be used between the main body 110 and the shielding edge 120, which also reduces the probability of stress concentration. The connection strength between the main body 110 and the shielding edge 120 can be increased, and can be formed in one step through a mold, reducing the disassembly and assembly steps and improving production efficiency; or the main body 110 and the shielding edge 120 can be set separately. For example, the main body 110 and the shielding edge 120 can be connected by snap-on, threaded, adhesive, etc. At this time, the shielding edge 120 can be disassembled and assembled from the main body 110. The shielding edge 120 is an optional structure to meet the needs of different users.

[0052] The shielding edge 120 is located above and spaced apart from the track 300, shielding at least a portion of the upper portion of the track 300. In other words, each shielding edge 120 shields the track 300 on the same side of the main body 110 as the shielding edge 120. By providing the shielding edge 120 to shield the track 300, the track 300 does not need to be embedded in the existing surface of the main body 110, and the track 300 does not encroach on the existing space of the main body 110, thus avoiding a reduction in the available space of the main body 110. This achieves shielding of the upper portion of the track 300 without changing the existing structural layout of the main body 110.

[0053] like Figure 4-Figure 6 As shown, the side of the first crawler 310 facing away from the second crawler 320 extends beyond the shielding edge 120, and the side of the second crawler 320 facing away from the first crawler 310 extends beyond the shielding edge 120. In this way, the shielding edge 120 is smaller in the first direction, which can achieve shielding of the upper part of the crawler 300 while reducing costs.

[0054] For example, the size of the upper part of the track 300 blocked along 120 in the first direction is not less than half of the total size of the upper part of the track 300 in the first direction, so as to ensure that the difference between the first force and the second force of each track 300 is large enough, that is, each track 300 can provide sufficient first driving force to achieve rapid movement of the pool cleaning robot 1.

[0055] like Figure 4-Figure 5 As shown, both ends of the crawler 300 extend beyond the body 100 in the second direction. This effectively increases the surface area of ​​the crawler 300. When the pool cleaning robot 1 moves along the surface of the pool 2, the contact area between the crawler 300 and the surface of the pool 2 is larger, and the friction between the crawler 300 and the surface of the pool 2 is greater, thereby improving the movement speed and stability of the pool cleaning robot 1. When the pool cleaning robot 1 separates from the surface of the pool 2, the single crawler 300 can generate a larger first driving force for driving the pool cleaning robot 1 to move, and the pool cleaning robot 1 is subjected to a greater driving force, thereby improving the movement speed and stability of the pool cleaning robot 1.

[0056] like Figure 1-Figure 2 ,like Figure 4-Figure 7 As shown, the pool cleaning robot 1 further includes a roller 400, which is rotatably disposed on the body 100 and is located on one side of the body 100 in the second direction. The water inlet 101 and the roller 400 are located on the same side of the body 100. When the roller 400 rotates relative to the body 100, the liquid 5 in the pool 2 is driven to flow into the water inlet 101. By providing the roller 400, the liquid 5 in the pool 2 can be accelerated to flow from the water inlet 101 into the filter module 500. Within the same time, the cleaning efficiency of the filter module 500 for the pool 2 is improved. In addition, the roller 400 can also contact the surface of the pool 2 and generate friction, providing driving force for the movement of the pool cleaning robot 1.

[0057] like Figure 1-Figure 2 ,like Figure 4-Figure 7 As shown, at least a portion of the upper portion of the drum 400 is obscured by the body 100. When the crawler belt 300 separates from the surface of the pool 2, the upper portion of the drum 400 stirs the liquid 5 in the pool 2 to generate a third force, and the lower portion of the drum 400 stirs the liquid 5 in the pool 2 to generate a fourth force. The third force is smaller than the fourth force, and the difference between the third and fourth forces forms a second driving force. The first and second driving forces jointly drive the pool cleaning robot 1 to move.

[0058] Specifically, when the roller 400 is required to generate a second driving force to drive the pool cleaning robot 1 to move, the rotation direction of the roller 400 is the same as the rotation direction of the track 300. The first driving force of the track 300 and the second driving force of the roller 400 drive the pool cleaning robot 1 to move in the same direction. The first driving force of the track 300 and the second driving force of the roller 400 are superimposed on the pool cleaning robot 1 to avoid partial or complete offset of the first driving force of the track 300 and the second driving force of the roller 400.

[0059] In this way, when the track 300 separates from the surface of the pool 2, the pool cleaning robot 1 is subjected to a greater driving force, which is beneficial to increasing the moving speed of the pool cleaning robot 1. The roller 400 not only drives the liquid 5 in the pool 2 to flow into the filter module 500 at an accelerated speed to increase the filtration speed, but also drives the pool cleaning robot 1 to float and move in the water. The roller 400 is reused, and the moving speed of the pool cleaning robot 1 is increased without the need for additional parts.

[0060] like Figure 4-Figure 5As shown, the outer surface of the drum 400 is provided with a plurality of flexible paddles 410. The flexible paddles 410 and the drum 400 can be integrally formed. The plurality of flexible paddles 410 are spaced apart along the circumference of the drum 400, and each flexible paddle 410 extends along the axial direction of the drum 400. The provision of the flexible paddles 410 can increase the contact area between the drum 400 and the liquid 5 in the pool 2. On the one hand, the liquid 5 in the pool 2 can be guided to the water inlet 101 more quickly, thereby improving the cleaning efficiency. On the other hand, when the crawler 300 separates from the surface of the pool 2, the drum 400 has a greater second driving force, thereby increasing the driving force received by the pool cleaning robot 1 and increasing the movement speed of the pool cleaning robot 1.

[0061] At least one flexible paddle 410 extends downwardly beyond the track 300. Due to the low hardness of the flexible paddle 410, the flexible paddle 410 is easily deformed. When the drum 400 rotates relative to the body 100, different flexible paddles 410 extend downwardly beyond the track 300. This, on the one hand, increases the radial size of the flexible paddle 410 in the drum 400, which helps to further increase the contact area between the drum 400 and the liquid 5 in the pool 2, further improving the cleaning efficiency and the movement speed of the pool cleaning robot 1. On the other hand, when the track 300 contacts the surface of the pool 2, the flexible paddle 410 contacts the surface of the pool 2 and moves relative to the surface of the pool 2, thereby cleaning the surface of the pool 2, wiping off dirt and garbage deposited on the surface of the pool 2, and improving the cleanliness of the surface of the pool 2.

[0062] like Figure 4-Figure 5 As shown, the roller 400 extends beyond the body 100 in the first direction. This effectively increases the surface area of ​​the roller 400. When the pool cleaning robot 1 moves along the surface of the pool 2, the contact area between the roller 400 and the surface of the pool 2 is larger, thereby achieving a greater cleaning effect on the surface of the pool 2. When the pool cleaning robot 1 separates from the surface of the pool 2, the roller 400 can generate a greater second driving force for driving the pool cleaning robot 1 to move. The driving force exerted on the pool cleaning robot 1 is greater, thereby improving the movement speed and stability of the pool cleaning robot 1.

[0063] In addition, the drum 400 does not occupy too much space of the body 100, avoiding excessive reduction of the available space of the body 100. While shielding the upper part of the drum 400, the original structural layout of the body 100 is kept as unchanged as possible, reducing the probability of modification of the body 100.

[0064] like Figure 4 and Figure 6As shown, there are multiple rollers 400, and the multiple rollers 400 are arranged along the axial direction of the rollers 400. For example, the ends of the multiple rollers 400 as a whole can extend to the first crawler 310 and the second crawler 320, thereby increasing the length of the multiple rollers 400 as much as possible.

[0065] By providing a plurality of rollers 400, the overall surface area of ​​the rollers 400 is effectively increased. When the pool cleaning robot 1 moves along the surface of the pool 2, the contact area between the rollers 400 and the surface of the pool 2 is larger, and the cleaning efficiency of the surface of the pool 2 is higher; when the pool cleaning robot 1 is separated from the surface of the pool 2, each roller 400 can generate a second driving force for driving the pool cleaning robot 1 to move. The pool cleaning robot 1 is subjected to a greater driving force, and the moving speed and stability of the pool cleaning robot 1 can be improved.

[0066] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0067] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A pool cleaning robot, characterized in that: include: A body, provided with a water inlet and a water outlet; a snorkeling module, provided on the body, for controlling the pool cleaning robot to ascend or descend in the pool; a crawler track provided on the machine body, wherein the lower surface of the crawler track extends downwardly beyond the lower surface of the machine body, and at least a portion of the upper portion of the crawler track is shielded by the machine body; When the crawler belt contacts the surface of the pool, the pool cleaning robot is driven to move by the friction between the crawler belt and the surface of the pool. When the crawler is separated from the surface of the pool, the upper part of the crawler moves the liquid in the pool to generate a first force, and the lower part of the crawler moves the liquid in the pool to generate a second force. The first force is smaller than the second force. The difference between the first force and the second force forms a first driving force to drive the pool cleaning robot to move.

2. The pool cleaning robot according to claim 1, characterized in that: The body has a first direction and a second direction, the first direction, the second direction and the height of the body being perpendicular to each other; There are a plurality of crawlers, including a first crawler and a second crawler, the first crawler and the second crawler are arranged on opposite sides of the machine body in the first direction, and the crawlers extend along the second direction; When the crawler belt contacts the surface of the pool, the pool cleaning robot is driven to move along the second direction by the friction between the crawler belt and the surface of the pool; When the crawler is separated from the surface of the pool, the driving force generated by the crawler moving the liquid in the pool drives the pool cleaning robot to move along the second direction.

3. The pool cleaning robot according to claim 2, characterized in that: The body comprises: a main body, wherein the main body is provided with the water inlet and the water outlet, and the first crawler and the second crawler are respectively provided on opposite sides of the main body in the first direction; A shielding edge is provided on two opposite side surfaces of the main body in the second direction, and the shielding edge is located above the crawler and spaced apart from the crawler, for shielding at least a portion of the upper portion of the crawler.

4. The pool cleaning robot according to claim 3, characterized in that: The side of the first crawler facing away from the second crawler extends beyond the blocking edge, and the side of the second crawler facing away from the first crawler extends beyond the blocking edge.

5. The pool cleaning robot according to claim 2, characterized in that: Both ends of the crawler track extend beyond the machine body in the second direction.

6. The pool cleaning robot according to claim 2, characterized in that: Also includes: The drum is rotatably provided on the machine body and is located on one side of the machine body in the second direction. The water inlet and the drum are located on the same side of the machine body. When the drum rotates relative to the machine body, the liquid in the pool is driven to flow into the water inlet.

7. The pool cleaning robot according to claim 6, characterized in that: At least a portion of the upper portion of the drum is blocked by the machine body; When the track is separated from the surface of the pool, the upper part of the roller stirs the liquid in the pool to generate a third force, and the lower part of the roller stirs the liquid in the pool to generate a fourth force. The third force is smaller than the fourth force. The difference between the third force and the fourth force forms a second driving force. The first driving force and the second driving force jointly drive the pool cleaning robot to move.

8. The pool cleaning robot according to claim 7, characterized in that: A plurality of flexible paddles are provided on the outer surface of the drum, and the plurality of flexible paddles are arranged at intervals along the circumference of the drum. Each of the flexible paddles extends along the axial direction of the drum, and at least one of the flexible paddles extends downward beyond the crawler.

9. The pool cleaning robot according to claim 7, characterized in that: The drum extends beyond the body in the first direction.

10. The pool cleaning robot according to claim 7, characterized in that: There are multiple rollers, and the multiple rollers are arranged along the axial direction of the roller.

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