Chassis cleaning device and method, lawn mower

Abstract

The application provides a chassis cleaning device and method and a mower. The chassis cleaning device comprises a chassis, a cutterhead assembly and a cleaning assembly. The cutterhead assembly is arranged on a first side of the chassis, and the cleaning assembly is arranged on the first side of the chassis and is spaced apart from the cutterhead assembly. The cleaning assembly has a first state and a second state. The first state is a state of the cleaning assembly in a non-cleaning mode, and the second state is a state of the cleaning assembly in a cleaning mode. The length of the cleaning assembly in the second state is greater than the length of the cleaning assembly in the first state. The cleaning assembly sprays fluid in the second state. The chassis cleaning device and method and the mower provided by the application have good cleaning effect and are beneficial to improving the mowing efficiency.

Description

Technical Field

[0001] This application relates to the field of lawnmower technology, specifically to a chassis cleaning device and method, and a lawnmower. Background Technology

[0002] A lawnmower is a mechanical tool used for trimming lawns, vegetation, etc. The use of lawnmowers can save lawnmower workers' working time and reduce a significant amount of manpower. In related technologies, grass clippings and other debris easily accumulate on the lawnmower's blade assembly, affecting operating efficiency. Existing technologies clean the bottom of the lawnmower by installing a fixed fan or a water tank on the chassis. However, using a fixed fan means that some areas of the lawnmower cannot be thoroughly cleaned, and using a water tank significantly reduces the lawnmower's operating range. Summary of the Invention

[0003] This application provides a chassis cleaning device and method, as well as a lawnmower, that provides good cleaning performance and improves the efficiency of lawn mowing operations.

[0004] On one hand, this application provides a chassis cleaning device, comprising:

[0005] Chassis;

[0006] The cutter head assembly is located on the first side of the chassis; and

[0007] A cleaning component is disposed on the first side of the chassis and spaced apart from the cutter head assembly. The cleaning component has a first state and a second state. The first state is the state of the cleaning component in non-cleaning mode, and the second state is the state of the cleaning component in cleaning mode. The length of the cleaning component in the second state is greater than the length of the cleaning component in the first state. The cleaning component sprays fluid in the second state.

[0008] In one possible embodiment, the cleaning assembly includes a telescopic member and a spray member connected to one end of the telescopic member. During the transition from the first state to the second state, the telescopic member can extend and drive the spray member to extend from one end of the chassis to the other end. During the transition from the second state to the first state, the telescopic member can shorten and drive the spray member to retract.

[0009] In one possible embodiment, the telescopic member is in communication with the jetting member. In the second state, the fluid flows through the telescopic member to the jetting member. During the transition from the first state to the second state, the fluid flows through the telescopic member and causes the telescopic member to extend.

[0010] In one possible embodiment, the telescopic member is elastic, and during the transition from the second state to the first state, the telescopic member shortens due to its own elastic restoring force, causing the telescopic member to retract.

[0011] In one possible embodiment, the telescopic member includes an inner tube and an outer tube arranged around the outer periphery of the inner tube. The inner tube is elastic, the outer tube is flexible, and the outer tube is connected to the inner tube. During the transition from the first state to the second state, the outer tube extends under the influence of the inner tube, and during the transition from the second state to the first state, the outer tube shortens under the influence of the inner tube.

[0012] In one possible embodiment, the cleaning assembly further includes a clamp that is fastened to the connection between the telescopic member and the spray member.

[0013] In one possible embodiment, the cleaning component has at least one first nozzle and at least one second nozzle, wherein in the second state, the direction of the fluid ejected from the first nozzle is opposite to the direction of the fluid ejected from the second nozzle.

[0014] In one possible embodiment, the fluid is a gas.

[0015] In one possible embodiment, the chassis cleaning device further includes an air pump assembly disposed on a second side of the chassis, the air pump assembly having an air inlet and an air outlet, the air outlet communicating with the cleaning assembly, and the air pump assembly being used to deliver gas to the cleaning assembly.

[0016] On the other hand, this application also provides a lawnmower, including a walking device, a drive assembly, and the aforementioned chassis cleaning device. The walking device is used to enable the lawnmower to walk, and the drive assembly is connected to the blade assembly and is used to drive the blade assembly to rotate.

[0017] In one possible embodiment, the cutter head assembly includes a first sub-cutter head assembly and a second sub-cutter head assembly spaced apart, and the cleaning component is disposed between the first sub-cutter head assembly and the second sub-cutter head assembly, and the cleaning component is spaced apart from the first sub-cutter head assembly and the second sub-cutter head assembly.

[0018] In one possible embodiment, the first sub-blade assembly and the second sub-blade assembly are symmetrical about a target axis, which extends along the extension direction of the cleaning assembly when it switches from the first state to the second state.

[0019] In one possible embodiment, the lawnmower further includes a detection component and a control component electrically connected to the detection component, the detection component being used to detect the amount of debris accumulation on the chassis, and the control component being used to control the cleaning component to switch between a first state and a second state based on the detection result of the detection component.

[0020] In one possible embodiment, the detection component includes at least one pressure sensor disposed on a first side of the chassis, the at least one pressure sensor including at least one main pressure sensor disposed opposite to the cleaning component at both ends of the chassis.

[0021] Furthermore, this application also provides a chassis cleaning method, comprising:

[0022] Check the amount of debris accumulated on the chassis;

[0023] When the amount of debris accumulated on the chassis is greater than or equal to a first preset threshold, the cleaning component is controlled to switch from the first state to the second state and remain in the second state.

[0024] The amount of debris accumulated on the chassis was checked again;

[0025] When the amount of debris accumulated on the chassis is less than or equal to a second preset threshold, the cleaning component is controlled to switch from the second state to the first state and remain in the first state.

[0026] In one possible embodiment, detecting the amount of debris accumulation on the chassis includes: acquiring the pressure detection value of a pressure sensor;

[0027] The re-detection of the amount of debris accumulated on the chassis specifically includes: obtaining the pressure detection value of the pressure sensor again.

[0028] In one possible embodiment, controlling the cleaning component to switch from a first state to a second state and remain in the second state specifically includes: controlling the air pump component to be in an on state, so that the cleaning component switches from the first state to the second state and remains in the second state;

[0029] The control of the cleaning component to switch from the second state to the first state and remain in the first state specifically includes: controlling the air pump component to be in a closed state, so that the cleaning component switches from the second state to the first state and remains in the first state.

[0030] In one possible embodiment, the chassis cleaning method further includes:

[0031] Check the cleaning components and the air pump assembly for any abnormalities;

[0032] When the cleaning component or the air pump component malfunctions, the air pump component is controlled to be shut down and a warning command is issued.

[0033] The chassis cleaning device provided in this application includes a chassis, a blade assembly, and a cleaning component. Since both the blade assembly and the cleaning component are located on the first side of the chassis, the cleaning component sprays fluid in the cleaning mode, i.e., in the second state. Therefore, the impact of the sprayed fluid can clean the side where the blade assembly is located, preventing grass clippings and other debris from accumulating on the blade assembly, the chassis, or between the blade assembly and the chassis. This improves the efficiency of the blade assembly when performing grass cutting operations. Furthermore, the cleaning component and the blade assembly are spaced apart, so the blade assembly will not cut the cleaning component when performing grass cutting operations. In addition, since the length of the cleaning component in the second state is greater than that in the non-cleaning mode, i.e., the first state, the cleaning range can be expanded and the cleaning effect improved by switching the cleaning component between the first and second states. The longer length of the cleaning component in the cleaning mode allows it to block one side of the blade assembly, thus playing a guiding role during mowing operations and reducing the amount of debris left on the chassis. The relatively shorter length of the cleaning component in the non-cleaning mode can prevent damage to the cleaning component due to improper operation or external environment, thereby improving the durability of the chassis cleaning device. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below.

[0035] Figure 1 A schematic diagram of the chassis cleaning device provided in one state according to an embodiment of this application;

[0036] Figure 2 A schematic diagram of the chassis cleaning device provided in an embodiment of this application in another state;

[0037] Figure 3 for Figure 1 A schematic diagram of a cutter head assembly in a chassis cleaning device is shown.

[0038] Figure 4 This is a schematic diagram of the cleaning component in its first state.

[0039] Figure 5 This is a schematic diagram of the cleaning component in its second state.

[0040] Figure 6 for Figure 5 A schematic cross-sectional view of the telescopic component in the cleaning assembly shown;

[0041] Figure 7 for Figure 5 The diagram shown illustrates the structure of the cleaning assembly, which includes multiple spray nozzles.

[0042] Figure 8 for Figure 1 The chassis cleaning device shown also includes a schematic diagram of the air pump assembly;

[0043] Figure 9 This is a schematic diagram of a lawnmower provided in an embodiment of this application;

[0044] Figure 10 for Figure 9 A schematic diagram of a chassis cleaning device in a lawnmower is shown.

[0045] Figure 11 for Figure 10 The diagram shown is a circuit block diagram of a lawnmower.

[0046] Figure 12 A schematic flowchart of a chassis cleaning method provided in an embodiment of this application;

[0047] Figure 13 This is another schematic flowchart of the chassis cleaning method provided in the embodiments of this application.

[0048] Explanation of reference numerals in the attached figures:

[0049] Chassis cleaning device 100; chassis 10; blade assembly 20; cleaning component 30; first surface 101; second surface 102; blade body 201; blade 202; telescopic component 301; spray component 302; inner tube 310; outer tube 311; clamp 303; first spray nozzle 320; second spray nozzle 321; air pump assembly 40; air pump 401; air pipe 402; lawnmower 1000; walking device 50; first sub-blade assembly 21; second sub-blade assembly 22; first blade body 210; first blade 211; second sub-blade assembly 22; second blade 221; pressure sensor 60; detection component 6; control component 7. Detailed Implementation

[0050] The technical solutions provided in this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the embodiments described in this application are only a part of the embodiments, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort are within the protection scope of this application.

[0051] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0052] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish different objects, not to describe a particular order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, an assembly or device that includes one or more components is not limited to the one or more components listed, but may optionally also include one or more components not listed but inherent to the exemplified product, or one or more components that it should have based on the described function.

[0053] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the chassis cleaning device 100 provided in one state according to an embodiment of this application. Figure 2 This is a schematic diagram of the chassis cleaning device 100 in another state according to an embodiment of this application. The chassis cleaning device 100 includes a chassis 10, a blade assembly 20, and a cleaning assembly 30.

[0054] This application does not specifically limit the shape or material of the chassis 10. For example, the shape of the chassis 10 can be circular, elliptical, square, rectangular, other polygonal, or irregular. The material of the chassis 10 can be metal or non-metal. When the material of the chassis 10 is metal, the material includes, but is not limited to, aluminum, aluminum alloy, or stainless steel.

[0055] The chassis 10 includes a first surface 101 and a second surface 102 (see reference). Figure 8 The first surface 101 can be the surface of the chassis 10 facing the ground during grass cutting operations, and the second surface 102 is set opposite to the first surface 101.

[0056] The blade assembly 20 is capable of cutting weeds during mowing operations. In one possible embodiment, such as Figure 3 As shown, Figure 3 for Figure 1The diagram shows a structural schematic of the cutter head assembly 20 in the chassis cleaning device 100. The cutter head assembly 20 may include a cutter head body 201 and a plurality of blades 202 arranged circumferentially along the edge of the cutter head body 201. When the cutter head assembly 20 performs grass cutting operations, the cutter head body 201 can rotate around its central axis to drive the blades 202 to cut weeds. This application does not impose specific limitations on the shape, material, or number of the cutter head body 201 and the blades 202.

[0057] For example, the shape of the cutter head body 201 can be circular, elliptical, triangular, upright, rectangular, or other polygonal. The shape of the blade 202 can be circular, elliptical, triangular, upright, rectangular, or other polygonal.

[0058] For example, the material of the cutter head body 201 can be metal or non-metal. When the material of the cutter head body 201 is metal, its material includes, but is not limited to, aluminum, aluminum alloy, iron, stainless steel, etc. The material of the blade 202 can be metal, including but not limited to aluminum, aluminum alloy, iron, stainless steel, etc. The materials of the cutter head body 201, the blade 202, and the chassis 10 can be the same or different.

[0059] For example, the cutter head assembly 20 may include one or more cutter head bodies 201. When the number of cutter head bodies 201 is multiple, it includes, but is not limited to, two, three, or four. Each cutter head body 201 may have multiple spaced-apart blades 202, which may be evenly distributed circumferentially along the edge of the cutter head body 201. For instance, the number of blades 202 on each cutter head body 201 may be even or odd, such as four, five, six, seven, eight, or ten, as long as the blades are evenly distributed circumferentially on the cutter head assembly 20.

[0060] The blade 202 is detachably connected to the cutter head body 201 via threaded connection, snap-fit ​​connection, or other methods. This detachable connection facilitates the replacement of the blade 202.

[0061] The cutter head assembly 20 is disposed on the first side of the chassis 10. In one possible embodiment, the cutter head assembly 20 may be disposed on the first surface 101 of the chassis 10.

[0062] The cleaning component 30 is capable of cleaning debris accumulated on the chassis 10. Accumulated debris includes, but is not limited to, grass clippings and dirt. In one possible embodiment, the cleaning component 30 can clean the accumulated debris on the chassis 10 while the blade assembly 20 is performing mowing operations. In another possible embodiment, the cleaning component 30 can clean the accumulated debris on the chassis 10 when the blade assembly 20 has stopped mowing operations.

[0063] The cleaning component 30 is disposed on the first side of the chassis 10. It is understood that the cleaning component 30 and the cutter head assembly 20 are disposed on the same side of the chassis 10. Specifically, when the cutter head assembly 20 is disposed on the first surface 101 of the chassis 10, the cleaning component 30 is disposed on the first surface 101 of the chassis 10.

[0064] The cleaning component 30 is spaced apart from the cutter head assembly 20. This application does not specify a particular distance between the cleaning component 30 and the cutter head assembly 20. In one possible embodiment, the distance between the cleaning component 30 and the cutter head assembly 20 may be less than or equal to 50 mm. In another possible embodiment, the distance between the cleaning component 30 and the cutter head assembly 20 may be greater than or equal to 10 mm.

[0065] The cleaning component 30 has a first state and a second state. The first state is the state of the cleaning component 30 in a non-cleaning mode, and the second state is the state of the cleaning component 30 in a cleaning mode. The length of the cleaning component 30 in the second state is greater than the length of the cleaning component 30 in the first state. The cleaning component 30 sprays fluid in the second state.

[0066] Understandable, Figure 1 The chassis cleaning device 100 shown has its cleaning component 30 in the first state. Figure 2 The chassis cleaning device 100 shown has a cleaning component 30 in a second state. The cleaning component 30 can switch between a first state and a second state, wherein in the second state, the cleaning component 30 can clean weeds and other debris on the chassis 10. In one possible application scenario, when it is necessary to clean weeds and other debris on the chassis 10, the cleaning component 30 can be switched from the first state to the second state and held in the second state; after cleaning is completed, the cleaning component 30 can be switched from the second state to the first state and held in the first state. When the cleaning component 30 switches from the first state to the second state, its length extends; when the cleaning component 30 switches from the second state to the first state, its length shortens. The fluid sprayed by the cleaning component 30 in the second state includes, but is not limited to, liquids and gases.

[0067] The chassis cleaning device 100 provided in this application includes a chassis 10, a blade assembly 20, and a cleaning component 30. Since both the blade assembly 20 and the cleaning component 30 are located on the first side of the chassis 10, the cleaning component 30 sprays fluid in the cleaning mode, that is, in the second state. Therefore, the impact of the sprayed fluid can clean the side where the blade assembly 20 is located, preventing grass clippings and other debris from accumulating on the blade assembly 20, the chassis 10, or between the blade assembly 20 and the chassis 10. This improves the efficiency of the blade assembly 20 when performing grass cutting operations. Furthermore, the cleaning component 30 is spaced apart from the blade assembly 20, so the blade assembly 20 will not damage the cleaning component 30 when performing grass cutting operations. Furthermore, since the length of the cleaning component 30 in the second state is greater than that in the first state (i.e., in the non-cleaning mode), the cleaning range can be expanded and the cleaning effect improved by switching the cleaning component 30 between the first and second states. In the cleaning mode, the cleaning component 30 has a longer length, so it can block one side of the blade assembly 20, thereby playing a guiding role during lawn mowing and reducing the amount of debris left on the chassis 10. In the non-cleaning mode, the length of the cleaning component 30 is relatively short, so it can avoid damage to the cleaning component 30 due to improper operation or external environment, thereby improving the durability of the chassis cleaning device 100.

[0068] In one possible embodiment, please refer to Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the cleaning component 30 in its first state. Figure 5 This is a schematic diagram of the cleaning assembly 30 in its second state. The cleaning assembly 30 includes a telescopic member 301 and a spray member 302 connected to one end of the telescopic member 301. During the transition from the first state to the second state, the telescopic member 301 can extend, causing the spray member 302 to extend from one end of the chassis 10 towards the other. During the transition from the second state to the first state, the telescopic member 301 can shorten, causing the spray member 302 to retract.

[0069] The connection methods between the telescopic component 301 and the spraying component 302 include, but are not limited to, threaded connection, snap-fit ​​connection, welding, and bonding. Understandably, during the transition from the first state to the second state, the length of the spraying component 302 remains unchanged, but because the spraying component 302 is connected to the telescopic component 301 and the telescopic component 301 extends, the position of the spraying component 302 relative to the chassis 10 changes. Similarly, during the transition from the second state to the first state, the length of the spraying component 302 remains unchanged, but because the spraying component 302 is connected to the telescopic component 301 and the telescopic component 301 shortens, the position of the spraying component 302 relative to the chassis 10 changes.

[0070] Exemplarily, the extension of the telescopic member 301 can be due to the driving force of the driving member; or the extension of the telescopic member 301 can be due to the flow force of the fluid when transmitting fluid to the jet member 302. Exemplarily, the shortening of the telescopic member 301 can be due to the driving force of the driving member; or the shortening of the telescopic member 301 can be due to the automatic shortening of the telescopic member 301 when no fluid is transmitted through the telescopic member 301 to the jet member 302. The driving member includes, but is not limited to, a motor. This application does not specifically limit the extension distance of the telescopic member 301 when switching from the first state to the second state. Exemplarily, the telescopic member 301 can extend along the direction of extension of the telescopic member 301, and the extension distance of the telescopic member 301 can be greater than or equal to 1 / 2 the distance from the mounting end of the telescopic member 301 to the other end of the chassis 10.

[0071] By including a telescopic member 301 and a spray member 302 connected to one end of the telescopic member 301 in the cleaning component 300, the length of the cleaning component 30 can be extended when switching from the first state to the second state, and shortened when switching from the second state to the first state. In other words, the length of the cleaning component 30 in the second state is greater than its length in the first state. Furthermore, by having the telescopic member 301 extend and retract the spray member 302, the design complexity of the cleaning component 30 is reduced, and the range of options for the spray member 302 is expanded.

[0072] In one possible embodiment, the telescopic member 301 is in communication with the jetting member 302. In the second state, the fluid flows through the telescopic member 301 to the jetting member 302. During the transition from the first state to the second state, the fluid flows through the telescopic member 301 and causes the telescopic member 301 to extend.

[0073] Understandably, fluid can flow from the telescopic member 301 to the spray member 302. In this embodiment, the telescopic member 301 can be a hollow telescopic tube. The telescopic tube can ensure good sealing and stable fluid transmission. One end of the telescopic member 301 has a first fluid inlet, and the other end has a fluid outlet. The spray member 302 can be a nozzle including a second fluid inlet and one or more spray nozzles. The fluid outlet of the telescopic member 301 communicates with the second fluid inlet of the spray member 302, and the spray nozzles are used to spray fluid. When the chassis cleaning device 100 needs cleaning, fluid can be introduced from the first fluid inlet.

[0074] The way in which the telescopic member 301 and the jet member 302 are connected includes, but is not limited to, the fluid outlet of the telescopic member 301 being connected to the second fluid inlet of the jet member 302; or, the end of the telescopic member 301 having a fluid outlet being sleeved together with the end of the jet member 302 having a second fluid inlet.

[0075] In this embodiment, fluid flows through the telescopic member 301 and causes the telescopic member 301 to extend, which can realize the automatic extension of the telescopic member 301. Thus, there is no need to set up a driving component to drive the extension of the telescopic member 301, which helps to reduce the number of parts in the chassis cleaning device 100 and simplify the structure of the chassis cleaning device 100.

[0076] In one possible embodiment, the telescopic member 301 is elastic, and during the process of switching from the second state to the first state, the telescopic member 301 shortens due to its own elastic restoring force, causing the telescopic member 301 to retract.

[0077] Understandably, the telescopic component 301 can retract automatically. In this embodiment, the telescopic component 301 is an elastic hollow telescopic tube, including but not limited to a corrugated tube, a cylindrical elastic telescopic tube, or a square elastic telescopic tube.

[0078] In this embodiment, the telescopic member 301 shortens due to its own elastic restoring force, which can realize the automatic shortening of the telescopic member 301. Thus, there is no need to set up a driving component to drive the shortening of the telescopic member 301, which helps to reduce the number of parts in the chassis cleaning device 100 and simplify the structure of the chassis cleaning device 100.

[0079] In one possible embodiment, such as Figure 6 As shown, Figure 6 for Figure 5The diagram shows a cross-sectional view of the telescopic member 301 in the cleaning assembly 30. The telescopic member 301 includes an inner tube 310 and an outer tube 311 surrounding the outer periphery of the inner tube 310. The inner tube 310 is elastic. The outer tube 311 is flexible. The outer tube 311 is connected to the inner tube 310. During the transition from the first state to the second state, the outer tube 311 extends under the influence of the inner tube 310; during the transition from the second state to the first state, the outer tube 311 shortens under the influence of the inner tube 310.

[0080] The inner tube 310 is an elastic hollow tube, and its material can be silicone or rubber, etc. This application does not specifically limit the elastic modulus of the inner tube 310, as long as it can achieve the corresponding stroke extension and contraction. The outer tube 311 is a flexible hollow tube, sleeved on the outside of the inner tube 310. The outer tube 311 may be inelastic, or its elasticity may be less than that of the inner tube 310. The material of the outer tube 311 is a flexible material capable of bending. For example, the material of the outer tube 311 includes, but is not limited to, woven fabric. The inner tube 310 and the outer tube 311 can be directly or indirectly connected. When the inner tube 310 and the outer tube 311 are indirectly connected, both the inner tube 310 and the outer tube 311 can be connected to the spray member 302. In one possible embodiment, the two ends of the outer tube 311 can be directly connected to the two ends of the inner tube 310, and there is no connection between the middle of the outer tube 311 and the middle of the inner tube 310.

[0081] During the transition from the first state to the second state, the inner tube 310 extends and undergoes elastic deformation under the force of the fluid, while the outer tube 311 itself may not undergo elastic deformation.

[0082] In this embodiment, when fluid flows through, the impact force of the fluid can stretch the inner tube 310. Since the outer tube 311 is connected to the inner tube 310, the inner tube 310 can stretch the outer tube 311. Thus, during the transition from the first state to the second state, fluid flows through the telescopic member 301 and causes the telescopic member 301 to extend. At the same time, since the inner tube 310 is elastic, when no fluid flows through, the inner tube 310 shortens due to its own elastic restoring force. Since the outer tube 311 is connected to the inner tube 310, the inner tube 310 can cause the outer tube 311 to retract. Thus, during the transition from the second state to the first state, the telescopic member 301 shortens due to its own elastic restoring force, causing the telescopic member 301 to retract.

[0083] Specifically, when the sprayed fluid is gas, when the cleaning component 30 switches from the first state to the second state, the air pump of the cleaning component 30 is an air pump. When the air pump is started, compressed air is sent into the inner tube 310. Since the inner tube 310 is made of elastic material, it will expand and extend along the length direction after being subjected to airflow pressure. It can produce significant length extension when subjected to pressure. The outer tube 311 covers the outside of the inner tube 310 and is usually a flexible material that can change, such as woven fabric. It can extend but lacks self-stretching ability. When the inner tube 310 elastically elongates under the action of airflow, it drives the outer tube 311 to stretch and extend along the length direction together. The role of the outer tube 311 is to protect the inner tube and transmit the movement of the inner tube, ensuring that the cleaning component 30 maintains overall consistency and stability during the extension process.

[0084] The air pressure of the air pump directly affects the extension length of the inner tube. By adjusting the air pressure of the air pump, the extension range of the inner tube 310 can be controlled, thereby achieving precise adjustment of the extension length of the cleaning component 30. When a longer cleaning range is required, the air pressure can be increased accordingly, so that the inner tube 310 reaches a greater extension ratio. When it is necessary to retract or reduce the extension, the air pressure can be reduced or the air pump can be stopped, so that the inner tube 310 returns to its initial length.

[0085] When the air pump stops, the inner tube 310 loses air pressure support, and its elastic material characteristics cause it to naturally retract to its original length, while the flexible outer tube 311 retracts along with it. The cleaning component 30 remains in the first state in the first non-working state, saving space and reducing the risk of external damage.

[0086] For example, when the sprayed fluid is a liquid, the inner tube 310 of the cleaning component can also be extended in the manner described above, but it is driven by a fluid pump that can provide sufficient pressure to spray the liquid through the inner tube to achieve the cleaning function. During cleaning, the self-moving device has an external device for supplying fluid or a tank for storing fluid. Optionally, the viscosity of the liquid should be less than 10 × 10⁻⁴ poise. If the fluid can be water, an external water tank can be installed on the lawnmower, or a retractable water pipe, such as a faucet or a water tank installed on the lawnmower, can be connected to the outside of the faucet.

[0087] In one possible embodiment, please refer to Figure 4 and Figure 5 The cleaning component 30 also includes a clamp 303, which is fastened to the connection between the telescopic member 301 and the spray member 302.

[0088] The clamp 303 can be made of plastic or metal, etc. The clamp 303 can be ring-shaped, U-shaped, or tubular, etc. The clamp 303 can be elastic or inelastic.

[0089] By setting the clamp 303, the connection reliability between the telescopic component 301 and the spray component 302 can be improved, and the separation of the telescopic component 301 and the spray component 302 due to excessive pressure when the fluid flows through the connection between the telescopic component 301 and the spray component 302 can be avoided.

[0090] In one possible embodiment, such as Figure 7 As shown, Figure 7 for Figure 5 The cleaning assembly 30 shown is a schematic diagram of a structure including multiple spray nozzles. The cleaning assembly 30 has at least one first spray nozzle 320 and at least one second spray nozzle 321. In the second state, the direction of the fluid ejected from the first spray nozzle 320 is opposite to the direction of the fluid ejected from the second spray nozzle 321.

[0091] In this embodiment, the spray member 302 has at least one first spray port 320 and at least one second spray port 321. This application does not specifically limit the number of first spray ports 320 or the number of second spray ports 321. The number of first spray ports 320 can be one or more. The number of second spray ports 321 can be one or more. When the number of first spray ports 320 is multiple, it includes, but is not limited to, two, three, four, or five. When the number of second spray ports 321 is multiple, it includes, but is not limited to, two, three, four, or five. The number of first spray ports 320 and the number of second spray ports 321 can be the same or different.

[0092] Optionally, there may be one first injection port 320 and multiple second injection ports 321. In one possible embodiment, in the second state, the direction of the fluid ejected from the first injection port 320 may be the same as the direction when the telescopic member 301 extends, and the direction of the fluid ejected from the second injection port 321 may be the same as the direction when the telescopic member 301 shortens.

[0093] By having the cleaning assembly 30 have at least one first nozzle 320 and at least one second nozzle 321, in the second state, the direction of the fluid ejected from the first nozzle 320 is opposite to the direction of the fluid ejected from the second nozzle 321, thus enabling cleaning in multiple directions, thereby enhancing the cleaning effect and effectively removing debris from the chassis 10.

[0094] In one possible embodiment, the fluid is a gas. It is understood that this embodiment, combined with the aforementioned embodiment of the cleaning component 30 including the telescopic member 301 and the jetting member 302, allows the telescopic member 301 to extend under air pressure when gas flows through it, and to shorten under its own elastic restoring force when no gas flows through it. In the second state, the jetting member 302 jets gas.

[0095] By using gas as the fluid, it is beneficial to reduce the weight of the chassis cleaning device 100 and avoid situations where a water tank needs to be installed on the chassis cleaning device 100 or where it needs to be connected to a water inlet.

[0096] In one possible embodiment, such as Figure 8 As shown, Figure 8 for Figure 1 The schematic diagram of the chassis cleaning device 100 also includes an air pump assembly 40. The chassis cleaning device 100 further includes an air pump assembly 40 disposed on the second side of the chassis 10. The air pump assembly 40 has an air inlet and an air outlet, the air outlet being connected to the cleaning assembly 30. The air pump assembly 40 is used to supply gas to the cleaning assembly 30.

[0097] The air pump assembly 40 provides gas to the cleaning assembly 30. In one possible embodiment, the air pump assembly 40 may include an air pump 401 and an air conduit 402 connecting the air pump 401 and the cleaning assembly 30. In this embodiment, one end of the air conduit 402 is connected to the air pump 401, and the other end of the air conduit 402 is connected to the first fluid inlet of the telescopic member 301. When the air pump 401 is started, the air entering the air pump 401 from the air inlet is compressed and the compressed gas is transmitted to the cleaning assembly 30 through the air conduit 402. When the air pump 401 is turned off, the air pump 401 stops compressing air.

[0098] Optionally, when the cutter head assembly 20 is disposed on the first surface 101 of the chassis 10, the air pump 401 may be disposed on the second surface 102 of the chassis 10, and the end of the air pipe 402 away from the chassis 10 may pass through the chassis 10 to communicate with the telescopic member 301; or, when the cutter head assembly 20 is disposed on the second surface 102 of the chassis 10, the air pump 401 may be disposed on the first surface 101 of the chassis 10, and the end of the air pipe 402 away from the chassis 10 may pass through the chassis 10 to communicate with the telescopic member 301.

[0099] The way in which the air outlet of the air pump assembly 40 is connected to the cleaning assembly 30 includes, but is not limited to, the end of the air pipe 402 away from the air pump 401 being connected to the first fluid inlet of the telescopic member 301; or, the end of the air pipe 402 away from the air pump 401 being sleeved together with the end of the telescopic member 301 having the first fluid inlet.

[0100] In this embodiment, an air pump assembly 40 provides gas to the cleaning assembly 30. By controlling the state of the air pump 401, the cleaning assembly 30 can switch between cleaning and non-cleaning modes. Furthermore, by placing the air pump assembly 40 on the second side of the chassis 10 and the blade assembly 20 on the first side of the chassis 10, it is beneficial to avoid a situation where a higher height for the air pump assembly 40 leads to a greater height difference between the blade assembly 20 and the ground, thus affecting mowing efficiency.

[0101] Further, please refer to Figure 9 and Figure 10 , Figure 9 This is a schematic diagram of a lawnmower 1000 provided in an embodiment of this application. Figure 10 for Figure 9 This is a schematic diagram of a chassis cleaning device 100 in a lawnmower 1000. This application also provides a lawnmower 1000. The lawnmower 1000 includes a walking device 50, a drive assembly, and the chassis cleaning device 100 described in any of the above embodiments. The walking device 50 is used to enable the lawnmower 1000 to move. The drive assembly is connected to the cutter head assembly 20 and is used to drive the cutter head assembly 20 to rotate.

[0102] In one possible embodiment, the walking device 50 may include a first motor, a first transmission mechanism, and a plurality of walking wheels. The first transmission mechanism is connected between the first motor and the plurality of walking wheels, and is used to transmit the power output by the first motor to the walking wheels. The transmission mechanism may be a gear transmission mechanism. This application does not impose a specific limitation on the number of walking wheels. For example, the number of walking wheels may be two, three, or four.

[0103] In one possible embodiment, the drive component may include a second motor and a second transmission mechanism. The second motor and the first motor may be the same motor or they may be independent motors. The second transmission mechanism is connected between the second motor and the cutter head assembly 20 and is used to transmit the power output by the second motor to the cutter head assembly 20.

[0104] Of course, the lawnmower 1000 may also include a lifting assembly, which can be used to lift the chassis cleaning device 100.

[0105] In one possible embodiment, the cutter head assembly 20 includes a first sub-cutter head assembly 21 and a second sub-cutter head assembly 22 spaced apart, and the cleaning component 30 is disposed between the first sub-cutter head assembly 21 and the second sub-cutter head assembly 22, and the cleaning component 30 is spaced apart from the first sub-cutter head assembly 21 and the second sub-cutter head assembly 22.

[0106] Optionally, the first sub-cutter head assembly 21 and the second sub-cutter head assembly 22 can be spaced apart along the length of the chassis 10. This application does not specifically limit the spacing between the cleaning assembly 30 and the first sub-cutter head assembly 21, or between the cleaning assembly 30 and the second sub-cutter head assembly 22. The spacing between the cleaning assembly 30 and the first sub-cutter head assembly 21, and between the cleaning assembly 30 and the second sub-cutter head assembly 22, can be the same or different.

[0107] The first sub-cutter head assembly 21 may include a first cutter head body 210 and a plurality of first blades 211 arranged circumferentially along the edge of the first cutter head body 210. The second sub-cutter head assembly 22 may include a second cutter head body 220 and a plurality of second blades 221 arranged circumferentially along the edge of the second cutter head body 220. The material of the first cutter head body 210 and the second cutter head body 220 may be the same or different. The shape of the first cutter head body 210 and the second cutter head body 220 may be the same or different. The shape of the first blades 211 and the second blades 221 may be the same or different. The material of the first blades 211 and the second blades 221 may be the same or different. The number of first blades 211 and the number of second blades 221 may be the same or different.

[0108] This embodiment, by including a first sub-disc assembly 21 and a second sub-disc assembly 22 spaced apart in the blade assembly 20 of the lawnmower 1000, facilitates an expansion of the lawnmower 1000's operating range during mowing operations. Since the blade assembly 20 includes the first sub-disc assembly 21 and the second sub-disc assembly 22 spaced apart, the area between the first sub-disc assembly 21 and the second sub-disc assembly 22 is a region where weeds easily accumulate. Therefore, by placing a cleaning component 30 between the first sub-disc assembly 21 and the second sub-disc assembly 22, cleaning efficiency can be improved. Furthermore, the cleaning component 30, positioned between the first sub-disc assembly 21 and the second sub-disc assembly 22, will not obstruct the mowing operations of the first sub-disc assembly 21 and the second sub-disc assembly 22, nor will it interfere with the rotation of the first sub-disc assembly 21 and the second sub-disc assembly 22. In addition, the cleaning component 30 is located between the first sub-blade assembly 21 and the second sub-blade assembly 22. During the mowing process, the cleaning component 30 can play a guiding role and reduce the residue of debris between the first sub-blade assembly 21 and the second sub-blade assembly 22.

[0109] In one possible embodiment, the first sub-blade assembly 21 and the second sub-blade assembly 22 are symmetrical about a target axis, which extends along the extension direction of the cleaning assembly 30 when it switches from the first state to the second state.

[0110] Understandably, the structure of the first sub-cutter head assembly 21 is the same as that of the second sub-cutter head assembly 22, and they are symmetrically arranged. The arrangement direction of the first sub-cutter head assembly 21 and the second sub-cutter head assembly 22 is perpendicular to the extension and retraction direction of the cleaning assembly 30. The target axis can be referenced. Figure 10 As shown by line M. In this embodiment, the first sub-blade disc assembly 21 and the second sub-blade disc assembly 22 are arranged along the length direction of the chassis 10, and the extension / retraction direction of the cleaning assembly 30 is along the width direction of the chassis 10. Of course, in other possible embodiments, the arrangement direction of the first sub-blade disc assembly 21 and the second sub-blade disc assembly 22 may be along the width direction of the chassis 10, and the extension / retraction direction of the cleaning assembly 30 may be along the length direction of the chassis 10.

[0111] By making the first sub-blade assembly 21 and the second sub-blade assembly 22 symmetrical about the target axis, the symmetry of the lawnmower 1000's operation can be improved. Furthermore, extending the target axis along the direction of the cleaning assembly 30 when switching from the first state to the second state allows the cleaning assembly 30 to more accurately clean areas on the chassis 10 where debris accumulates, thereby improving both cleaning and mowing efficiency.

[0112] In one possible embodiment, please refer to Figures 9 to 11 , Figure 11 for Figure 10 The diagram shows a circuit block diagram of a lawnmower 1000, which further includes a detection component 6 and a control component 7 electrically connected to the detection component 6. The detection component 6 is used to detect the amount of debris accumulated on the chassis 10. The control component 7 is used to control the cleaning component 30 to switch between a first state and a second state based on the detection result of the detection component 6.

[0113] The detection component 6 can be a pressure detection component or a vision detection component, etc. When the detection component 6 is a pressure detection component, it can sense the pressure signal when objects accumulate on the chassis 10. The control component 7 can determine the amount of debris accumulated on the chassis 10 based on the pressure signal, and thus, when it is determined that cleaning is needed, it switches the cleaning component 30 from the first state to the second state. When the detection component 6 is a vision detection component, it can acquire image information when objects accumulate on the chassis 10. The control component 7 can determine the amount of debris accumulated on the chassis 10 based on the image information, and thus, when it is determined that cleaning is needed, it switches the cleaning component 30 from the first state to the second state.

[0114] By including a detection component 6 and a control component 7 in the lawnmower 1000, intelligent control can be achieved to switch the cleaning component 30 between a first state and a second state. For example, by setting a threshold for the amount of debris accumulation, the cleaning frequency can be limited, avoiding situations where cleaning is not timely or is too frequent due to manual determination of whether cleaning is needed.

[0115] In one possible embodiment, such as Figure 10 As shown, the detection component 6 includes at least one pressure sensor 60. The pressure sensor 60 is located on the first side of the chassis 10. The at least one pressure sensor 60 includes at least one main pressure sensor, which is disposed opposite to the cleaning component 30 at both ends of the chassis 10. Due to the accumulation of debris on the chassis 10, the weight of the lawnmower 1000 increases. The pressure sensor 60 cleans the chassis 10 by detecting changes in its pressure.

[0116] This application does not specify the number of pressure sensors 60. The number of pressure sensors 60 can be one or more. When there is only one pressure sensor 60, the pressure sensor 60 is disposed opposite to the cleaning component 30 at both ends of the chassis 10. When there are multiple pressure sensors 60, the multiple pressure sensors 60 may include one or more main pressure sensors, which are disposed opposite to the cleaning component 30 at both ends of the chassis 10. The remaining pressure sensors 60 can be distributed around the main pressure sensor.

[0117] In this embodiment, the pressure sensor 60, the cutter head assembly 20, and the cleaning assembly 30 are located on the same side of the chassis 10. It is understood that in the embodiment where the cutter head assembly 20 is located on the first surface 101 of the chassis 10, the pressure sensor 60 is also located on the first surface 101 of the chassis 10; in the embodiment where the cutter head assembly 20 is located on the second surface 102 of the chassis 10, the pressure sensor 60 is located on the second surface 102 of the chassis 10. In this embodiment, the main pressure sensor and the cleaning assembly 30 are arranged opposite each other along the width direction of the chassis 10.

[0118] By placing the pressure sensor 60 on the first side of the chassis 10, the pressure sensor 60 can directly acquire the pressure exerted by the objects accumulated on the chassis 10, thereby improving the accuracy of the pressure sensor 60 in detecting the amount of debris accumulated on the chassis 10. When there are multiple pressure sensors 60, multi-point detection can be achieved, which also helps to improve the accuracy of detecting the amount of debris accumulated on the chassis 10. Since the position design of the cleaning component 30 takes into account the area with more accumulated objects on the chassis 10, by including at least one main pressure sensor in at least one pressure sensor 60, and the main pressure sensor being disposed opposite to the cleaning component 30 at both ends of the chassis 10, it is more conducive to detecting the pressure signal in the area with more accumulated objects, thereby avoiding the situation of untimely cleaning.

[0119] Furthermore, this application also provides a chassis cleaning method, which is performed in the chassis cleaning apparatus 100 described in any of the above embodiments. Please refer to... Figure 11 and Figure 12 , Figure 12 This is a schematic flowchart of a chassis cleaning method provided in an embodiment of this application. The chassis cleaning method includes, but is not limited to, the following steps: S10, S11, S12, and S13.

[0120] S10: Detect the amount of debris accumulated on chassis 10.

[0121] S11: When the amount of debris accumulated on the chassis 10 is greater than or equal to the first preset threshold, the cleaning component 30 is controlled to switch from the first state to the second state and remain in the second state.

[0122] S12: Detect the amount of debris accumulated on the chassis 10 again.

[0123] S13: When the amount of debris accumulated on the chassis 10 is less than or equal to the second preset threshold, control the cleaning component 30 to switch from the second state to the first state and maintain it in the first state.

[0124] Specifically, step S10 can detect the amount of debris accumulation on the chassis 10 by means of pressure sensor 60 detecting the pressure value generated by the amount of debris accumulation on the chassis 10; or by means of vision sensor detecting the image generated by the amount of debris accumulation on the chassis 10.

[0125] Similarly, step S12 can be performed by detecting the amount of debris accumulated on the chassis 10 again, either by the pressure sensor 60 detecting the pressure value generated by the amount of debris accumulated on the chassis 10 again, or by the vision sensor detecting the image generated by the amount of debris accumulated on the chassis 10 again.

[0126] Step S10 can detect the amount of debris accumulated on the chassis 10 by starting the detection after the first preset time of operation; or by starting the detection after the completion of an operation; or by detecting the detection at the same time as the start of operation; or by starting the detection after receiving the first instruction input by the user.

[0127] Step S12 can be performed by re-detecting the amount of debris accumulated on the chassis 10 after the cleaning component 30 has been in the second state for a second preset time; or, it can be performed by re-detecting the amount of debris accumulated on the chassis 10 after receiving a second instruction from the user.

[0128] The first preset threshold in step S11 is greater than the second preset threshold in step S13. The first and second preset thresholds are pre-stored and can be directly recalled. In step S10, when the pressure sensor 60 detects the pressure value generated by the amount of debris accumulated on the chassis 10, the first preset threshold can be the first preset pressure value; in step S10, when the vision sensor detects the image generated by the amount of debris accumulated on the chassis 10, the first preset threshold can be the first preset grayscale value.

[0129] The first state in step S11 is the same as the first state described in the embodiment of the chassis cleaning device 100 above. The second state in step S13 is the same as the second state described in the embodiment of the chassis cleaning device 100 above. That is, the first state is the state of the cleaning component 30 in the non-cleaning mode, and the second state is the state of the cleaning component 30 in the cleaning mode. The length of the cleaning component 30 in the second state is greater than the length of the cleaning component 30 in the first state. The cleaning component 30 sprays fluid in the second state.

[0130] Understandably, steps S10 and S11 are used to determine whether the chassis cleaning device 100 needs cleaning, and to put the cleaning component 30 into cleaning mode when cleaning is required. Steps S12 and S13 are used to determine whether the chassis cleaning device 100 has completed cleaning, and to put the cleaning component 30 into non-cleaning mode after cleaning is completed.

[0131] In one possible embodiment, such as Figure 13 As shown, Figure 13 This is another schematic flowchart of the chassis cleaning method provided in this application embodiment. Step S10, "detecting the amount of debris accumulation on the chassis 10," includes, but is not limited to, the following step S101. Step S12, again detecting the amount of debris accumulation on the chassis 10, includes, but is not limited to, the following step S121.

[0132] S101: Obtain the pressure detection value of pressure sensor 60.

[0133] S121: Obtain the pressure detection value of the pressure sensor 60 again.

[0134] It is understood that the chassis cleaning method of this embodiment is performed on a lawnmower 1000 equipped with a pressure sensor 60. In an embodiment where the lawnmower 1000 has only one pressure sensor 60, the pressure detection value of that pressure sensor 60 can be acquired. In an embodiment where the lawnmower 1000 has multiple pressure sensors 60, the pressure detection values ​​of all pressure sensors 60 can be acquired. In this embodiment, the first preset threshold can be a first preset pressure value, and the second preset threshold can be a second preset pressure value. The first preset pressure value is greater than the second preset pressure value.

[0135] In this embodiment where the lawnmower 1000 is equipped with multiple pressure sensors 60, it can be determined whether the amount of debris accumulated on the chassis 10 is greater than or equal to the first preset threshold by determining the average value of multiple pressure detection values ​​and the magnitude of the first preset pressure value; or it can be determined whether the amount of debris accumulated on the chassis 10 is greater than or equal to the first preset threshold by determining the magnitude of the largest pressure detection value and the magnitude of the first preset pressure value.

[0136] Similarly, in an embodiment where the lawnmower 1000 is equipped with multiple pressure sensors 60, it can be determined whether the amount of debris accumulation on the chassis 10 is less than or equal to the second preset threshold by determining the average value of multiple pressure detection values ​​and the magnitude of the second preset pressure value; or it can be determined whether the amount of debris accumulation on the chassis 10 is greater than or equal to the second preset threshold by determining the magnitude of the minimum pressure detection value and the second preset pressure value.

[0137] Detecting the amount of debris accumulated on the chassis 10 using pressure sensor 60 can ensure detection accuracy, reliability, and reduce detection time.

[0138] In one possible embodiment, please refer to Figure 12 and Figure 13 In step S11, “controlling the cleaning component 30 to switch from the first state to the second state and maintaining it in the second state” includes: controlling the air pump component 40 to be in the on state so that the cleaning component 30 switches from the first state to the second state and maintains it in the second state;

[0139] Step S13, “controlling the cleaning component 30 to switch from the second state to the first state and maintaining it in the first state”, includes: controlling the air pump component 40 to be in the off state so that the cleaning component 30 switches from the second state to the first state and maintains it in the first state.

[0140] Understandably, the chassis cleaning method of this embodiment is performed on a chassis cleaning device 100 equipped with an air pump assembly 40. In an embodiment where the cleaning assembly 30 includes a telescopic member 301 and a jetting member 302, and the telescopic member 301 extends under air pressure when gas flows through it and shortens under its own elastic restoring force when no gas flows through it, controlling the air pump assembly 40 to be in the open state also controls the cleaning assembly 30 to switch from a first state to a second state and remain in the second state. Similarly, controlling the air pump assembly 40 to be in the closed state also controls the cleaning assembly 30 to switch from the second state to the first state and remain in the first state.

[0141] In one possible embodiment, the chassis cleaning method further includes the steps S14 and S15.

[0142] S14: Check whether the cleaning component 30 and the air pump component 40 are abnormal.

[0143] S15: When there is an abnormality in the cleaning component 30 or the air pump component 40, control the air pump component 40 to be in a closed state and issue a reminder command.

[0144] Step S14, "Detecting whether the cleaning component 30 is abnormal," may include: detecting whether the cleaning component 30 can switch normally between the first state and the second state; and / or, detecting whether the cleaning component 30 can spray fluid normally. Step S14, "Detecting whether the air pump assembly 40 is abnormal," may include: detecting whether the air pump assembly 40 can compress air normally; and / or, detecting whether the air inlet of the air pump assembly 40 can intake air normally; and / or, detecting whether the air outlet of the air pump assembly 40 can exhaust air normally. Step S14 may be performed before step S10. If the cleaning component 30 or the air pump assembly 40 is abnormal, step S15 is executed; if the cleaning component 30 or the air pump assembly 40 is not abnormal, steps S10, S11, S12, and S13 are executed.

[0145] Step S15, "Controlling the air pump assembly 40 to be in the off state," means that the air pump assembly 40 stops supplying gas to the cleaning assembly 30. In this embodiment, where the cleaning assembly 30 includes a telescopic member 301 and a jet member 302, and the telescopic member 301 extends under air pressure when gas flows through it and shortens under its own elastic restoring force when no gas flows through it, controlling the air pump assembly 40 to be in the off state also controls the cleaning assembly 30 to be in the first state. The reminder command can be a preset voice signal or a preset alarm.

[0146] This embodiment detects the cleaning component 30 and the air pump component 40, and alerts the operator when either the cleaning component 30 or the air pump component 40 malfunctions, thus avoiding ineffective cleaning.

[0147] The features mentioned above in the specification, claims, and drawings can be combined in any way as long as they are meaningful within the scope of this application. The advantages and features described for the chassis cleaning device 100 are applied accordingly to the lawnmower 1000.

[0148] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, and such improvements and refinements are also considered to be within the protection scope of this application.

Claims

1. A lawnmower chassis cleaning device, characterized in that, include: Chassis; The cutter head assembly is located on the first side of the chassis; and A cleaning component is disposed on the first side of the chassis and spaced apart from the cutter head assembly. The cleaning component has a first state and a second state. The first state is the state of the cleaning component in non-cleaning mode, and the second state is the state of the cleaning component in cleaning mode. The length of the cleaning component in the second state is greater than the length of the cleaning component in the first state. The cleaning component sprays fluid in the second state. The cleaning component includes a telescopic member and a spray member connected to one end of the telescopic member. During the process of switching from the first state to the second state, the telescopic member extends and drives the spray member to extend from one end of the chassis toward the other end.

2. The lawnmower chassis cleaning device according to claim 1, characterized in that, During the transition from the second state to the first state, the telescopic member can shorten and drive the jet member to retract.

3. The lawnmower chassis cleaning device according to claim 2, characterized in that, The telescopic member is connected to the jetting member. In the second state, the fluid flows through the telescopic member to the jetting member. During the process of switching from the first state to the second state, the fluid flows through the telescopic member and causes the telescopic member to extend.

4. The lawnmower chassis cleaning device according to claim 3, characterized in that, The telescopic component is elastic. During the transition from the second state to the first state, the telescopic component shortens due to its own elastic restoring force, causing the telescopic component to retract.

5. The lawnmower chassis cleaning device according to claim 4, characterized in that, The telescopic component includes an inner tube and an outer tube arranged around the outer periphery of the inner tube. The inner tube is elastic, and the outer tube is flexible. The outer tube is connected to the inner tube. During the process of switching from the first state to the second state, the outer tube extends under the action of the inner tube. During the process of switching from the second state to the first state, the outer tube shortens under the action of the inner tube.

6. The lawnmower chassis cleaning device according to any one of claims 2 to 5, characterized in that, The cleaning component also includes a clamp that is fastened to the connection between the telescopic member and the spraying member.

7. The lawnmower chassis cleaning device according to any one of claims 1 to 5, characterized in that, The cleaning component has at least one first nozzle and at least one second nozzle, wherein in the second state, the direction of the fluid ejected from the first nozzle is opposite to the direction of the fluid ejected from the second nozzle.

8. The lawnmower chassis cleaning device according to any one of claims 1 to 5, characterized in that, The fluid is a gas.

9. The lawnmower chassis cleaning device according to claim 8, characterized in that, The lawnmower chassis cleaning device also includes an air pump assembly located on the second side of the chassis. The air pump assembly has an air inlet and an air outlet, the air outlet being connected to the cleaning assembly. The air pump assembly is used to deliver gas to the cleaning assembly.

10. A lawnmower, characterized in that, The device includes a walking mechanism, a drive assembly, and a lawnmower chassis cleaning device according to any one of claims 1 to 9, wherein the walking mechanism is used to enable the lawnmower to move, and the drive assembly is connected to the blade assembly and is used to drive the blade assembly to rotate.

11. The lawnmower according to claim 10, characterized in that, The cutter head assembly includes a first sub-cutter head assembly and a second sub-cutter head assembly arranged at intervals. The cleaning component is disposed between the first sub-cutter head assembly and the second sub-cutter head assembly, and the cleaning component is arranged at intervals from the first sub-cutter head assembly and the second sub-cutter head assembly.

12. The lawnmower according to claim 11, characterized in that, The first sub-cutter head assembly and the second sub-cutter head assembly are symmetrical about the target axis, which extends along the extension direction of the cleaning assembly when it switches from the first state to the second state.

13. The lawnmower according to claim 10, characterized in that, The lawnmower also includes a detection component and a control component electrically connected to the detection component. The detection component is used to detect the amount of debris accumulated on the chassis, and the control component is used to control the cleaning component to switch between the first state and the second state based on the detection result of the detection component.

14. The lawnmower according to claim 13, characterized in that, The detection component includes at least one pressure sensor located on the first side of the chassis. The at least one pressure sensor includes at least one main pressure sensor located opposite to the cleaning component at both ends of the chassis.

15. A chassis cleaning method, applied to the lawnmower according to any one of claims 10-14, characterized in that, include: Detect the amount of debris accumulated on the chassis; When the amount of debris accumulated on the chassis is greater than or equal to a first preset threshold, the cleaning component is controlled to switch from a first state to a second state and remain in the second state. The amount of debris accumulated on the chassis was checked again; When the amount of debris accumulated on the chassis is less than or equal to a second preset threshold, the cleaning component is controlled to switch from the second state to the first state and remain in the first state. The length of the cleaning component in the second state is greater than the length of the cleaning component in the first state. The cleaning component sprays fluid in the second state.

16. The chassis cleaning method according to claim 15, characterized in that, The detection of the amount of debris accumulated on the chassis includes: Obtain the pressure reading from the pressure sensor; The re-detection of the amount of debris accumulated on the chassis includes: The pressure detection value of the pressure sensor is obtained again.

17. The chassis cleaning method according to claim 15, characterized in that, The control of the cleaning component to switch from a first state to a second state and remain in the second state includes: The air pump assembly is controlled to be in the on state, so that the cleaning assembly switches from the first state to the second state and remains in the second state; The control of the cleaning component to switch from the second state to the first state and to remain in the first state includes: The air pump assembly is controlled to be in the off state so that the cleaning assembly switches from the second state to the first state and remains in the first state.

18. The chassis cleaning method according to claim 17, characterized in that, Also includes: Check the cleaning components and the air pump assembly for any abnormalities; When the cleaning component or the air pump component malfunctions, the air pump component is controlled to be shut down and a warning command is issued.

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