Chassis cleaning device and method and mower

Abstract

The invention 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 the first side of the chassis, the cleaning assembly is arranged on the first side of the chassis, and the cleaning assembly and the cutterhead assembly are arranged at intervals. The cleaning assembly has a first state and a second state, the first state is the state of the cleaning assembly in a non-cleaning mode, the second state is the state of the cleaning assembly in a cleaning mode, the length of the cleaning assembly in the second state is larger than that of the cleaning assembly in the first state, and the cleaning assembly sprays fluid in the second state. According to the chassis cleaning device and method and the mowing machine, the cleaning effect is good, and the mowing operation efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of lawn mowers, and in particular to a chassis cleaning device and method thereof, and a lawn mower. Background Art

[0002] A lawn mower is a mechanical tool used to trim lawns, vegetation, etc. The use of a lawn mower can save the working time of lawn mowers and reduce a large amount of human resources. In the related art, grass clippings and the like are easily accumulated on the blade assembly of the lawn mower, which affects the working efficiency. In the prior art, a fixed fan or a water storage tank is set on the chassis to clean the bottom of the lawn mower. However, the fixed fan method will cause some areas of the lawn mower to be unable to be thoroughly cleaned, and the use of a water storage tank will greatly reduce the endurance of the lawn mower. Summary of the invention

[0003] The present application provides a chassis cleaning device and method thereof, and a lawn mower that have good cleaning effects and are beneficial to improving the efficiency of mowing operations.

[0004] In one aspect, the present application provides a chassis cleaning device, comprising:

[0005] Chassis;

[0006] A cutter head assembly is disposed on a first side of the chassis; and

[0007] A cleaning component is arranged on a first side of the chassis and is spaced apart from the cutter disc component. The cleaning component has a first state and a second state. The first state is the state of the cleaning component in a non-cleaning mode, and the second state is the state of the cleaning component in a 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, and the cleaning component sprays fluid in the second state.

[0008] In a possible embodiment, 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 can extend and can drive the spray member to extend from one end of the chassis toward the other end. During the process of switching from the second state to the first state, the telescopic member can shorten and can drive the spray member to retract.

[0009] In a possible embodiment, the telescopic member is connected to the injection member, and in the second state, the fluid flows through the telescopic member to the injection member, and during the process of switching from the first state to the second state, the fluid flows through the telescopic member and drives the telescopic member to extend.

[0010] In a possible embodiment, the telescopic member is elastic, and during the process of switching from the second state to the first state, the telescopic member is shortened due to its own elastic restoring force, so that the telescopic member retracts.

[0011] In a possible embodiment, the telescopic member includes an inner tube and an outer tube arranged around the outer circumference 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 process of switching from the first state to the second state, the outer tube is extended by the inner tube, and during the process of switching from the second state to the first state, the outer tube is shortened by the inner tube.

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

[0013] In a possible embodiment, the cleaning component has at least one first spray port and at least one second spray port. In the second state, a direction of the fluid sprayed from the first spray port is opposite to a direction of the fluid sprayed from the second spray port.

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

[0015] In a possible embodiment, the chassis cleaning device also includes an air pump assembly arranged on the second side of the chassis, the air pump assembly has an air inlet and an air outlet, the air outlet is connected to the cleaning assembly, and the air pump assembly is used to deliver gas to the cleaning assembly.

[0016] On the other hand, the present application also provides a lawn mower, including a walking device, a driving assembly and the chassis cleaning device, wherein the walking device is used to realize the walking of the lawn mower, and the driving assembly is connected to the cutter disc assembly to drive the cutter disc assembly to rotate.

[0017] In a possible embodiment, the blade disc assembly includes a first sub-blade disc assembly and a second sub-blade disc assembly that are spaced apart, the cleaning assembly is disposed between the first sub-blade disc assembly and the second sub-blade disc assembly, and the cleaning assembly is spaced apart from the first sub-blade disc assembly and the second sub-blade disc assembly.

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

[0019] In a possible embodiment, the lawn mower further includes a detection component and a control component electrically connected to the detection component, wherein the detection component is used to detect the amount of debris accumulation on the chassis, and the control component is used to control the cleaning component to switch between the first state and the second state according to the detection result of the detection component.

[0020] In a possible embodiment, the detection component includes at least one pressure sensor, which is arranged on the first side of the chassis. The at least one pressure sensor includes at least one main pressure sensor, which is arranged at two ends of the chassis opposite to the cleaning component.

[0021] On the other hand, the present application also provides a chassis cleaning method, comprising:

[0022] Detect 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, controlling the cleaning component to switch from a first state to a second state and maintain the cleaning component in the second state;

[0024] Detecting the amount of debris accumulated on the chassis 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 a possible embodiment, the detecting the amount of debris accumulation on the chassis includes: obtaining a pressure detection value of a pressure sensor;

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

[0028] In a possible embodiment, controlling the cleaning component to switch from the first state to the second state and maintain it 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 maintains it in the second state;

[0029] The controlling the cleaning component to switch from the second state to the first state and maintain it 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 maintains it in the first state.

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

[0031] Detect whether the cleaning component and the air pump component are abnormal;

[0032] When there is an abnormality in the cleaning component or the air pump component, the air pump component is controlled to be in a closed state and a reminder instruction is issued.

[0033] The chassis cleaning device provided in the present application includes a chassis, a blade disc assembly and a cleaning assembly. Since the blade disc assembly and the cleaning assembly are both arranged on the first side of the chassis, the cleaning assembly 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 disc assembly is located, thereby avoiding the accumulation of debris such as grass clippings on the blade disc assembly, or on the chassis, or between the blade disc assembly and the chassis, thereby improving the efficiency of the blade disc assembly when performing mowing operations, and the cleaning assembly is spaced apart from the blade disc assembly, so that the blade disc assembly will not cut the cleaning assembly when performing mowing operations. In addition, since the length of the cleaning component in the second state is greater than the length of the cleaning component in the non-cleaning mode, that is, in the first state, the cleaning range can be expanded and the cleaning effect can be improved by switching the cleaning component between the first state and the second state. The cleaning component has a longer length in the cleaning mode, so it can be blocked on one side of the blade disc assembly, thereby playing a guiding role during mowing operations and reducing the amount of debris remaining on the chassis. The length of the cleaning component in the non-cleaning mode is relatively short, so it can avoid damage to the cleaning component due to improper operation or external environment, thereby improving the durability of the chassis cleaning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments are briefly introduced below.

[0035] Figure 1 A schematic diagram of the structure of a chassis cleaning device in one state provided by an embodiment of the present application;

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

[0037] Figure 3 for Figure 1 A schematic diagram of the structure of a cutter disc assembly in a chassis cleaning device shown;

[0038] Figure 4 is a schematic diagram of the structure of the cleaning component in a first state;

[0039] Figure 5 is a schematic diagram of the structure when the cleaning component is in the second state;

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

[0041] Figure 7 for Figure 5 The cleaning assembly shown includes a schematic structural diagram of a plurality of injection ports;

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

[0043] Fig. 9 A structural schematic diagram of a lawn mower provided in an embodiment of the present application;

[0044] Fig.10 for Fig. 9 A schematic diagram of the structure of a chassis cleaning device in the lawn mower shown;

[0045] Fig.11 for Fig.10 A circuit block diagram of the lawn mower shown;

[0046] Fig.12 A schematic diagram of a process flow of a chassis cleaning method provided in an embodiment of the present application;

[0047] Fig.13 Another schematic flow chart of the chassis cleaning method provided in an embodiment of the present application.

[0048] Description of reference numerals:

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

[0050] The technical solution provided by the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, not all of the embodiments. Based on the embodiments described in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0051] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It can 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. in the specification and claims of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example: a component or device including one or more parts is not limited to the one or more parts listed, but may optionally include one or more parts that are not listed but inherent to the exemplified product, or one or more parts that it should have based on the described function.

[0053] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic structural diagram of a chassis cleaning device 100 provided in an embodiment of the present application in one state. Figure 2 The schematic diagram of the structure of the chassis cleaning device 100 in another state provided by the embodiment of the present application is as follows. The chassis cleaning device 100 comprises a chassis 10 , a blade assembly 20 and a cleaning assembly 30 .

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

[0055] The chassis 10 includes a first surface 101 and a second surface 102 (see Figure 8 ), the first surface 101 may be the surface of the chassis 10 facing the ground during mowing operation, and the second surface 102 is disposed opposite to the first surface 101.

[0056] The blade assembly 20 can cut weeds when performing mowing operations. In a possible embodiment, as Figure 3 As shown, Figure 3 for Figure 1A schematic diagram of the structure of the blade disc assembly 20 in the chassis cleaning device 100 is shown, and the blade disc assembly 20 may include a blade disc body 201 and a plurality of blades 202 arranged circumferentially along the edge of the blade disc body 201. When the blade disc assembly 20 performs a mowing operation, the blade disc body 201 may rotate around its central axis to drive the blades 202 to cut the weeds. The present application does not specifically limit the shape, material, and number of the blade disc body 201 and the blades 202.

[0057] Exemplarily, the shape of the blade body 201 can be circular, elliptical, triangular, rectangular, or other polygonal shapes, etc. The shape of the blade 202 can be circular, elliptical, triangular, rectangular, or other polygonal shapes, etc.

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

[0059] Exemplarily, the cutter disc assembly 20 may include one or more cutter disc bodies 201. When the number of cutter disc bodies 201 is multiple, it includes but is not limited to two, three, or four. Each cutter disc body 201 may be provided with a plurality of blades 202 arranged at intervals, and the plurality of blades 202 may be uniformly arranged along the circumference of the edge of the cutter disc body 201. For example: the number of blades 202 provided on each cutter disc body 201 may be an even number or an odd number, such as four, five, six, seven, eight, or ten, etc., and the blades only need to be uniformly arranged circumferentially on the cutter disc assembly 20.

[0060] The blade 202 is detachably connected to the cutter head body 201 by means of thread connection, snap connection, etc. When the blade 202 is detachably connected to the cutter head body 201, it is convenient for the blade 202 to be replaced.

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

[0062] The cleaning assembly 30 can clean the accumulated debris on the chassis 10. The accumulated debris includes but is not limited to grass clippings, dirt, etc. In one possible embodiment, the cleaning assembly 30 can clean the accumulated debris on the chassis 10 while the blade disc assembly 20 is performing a mowing operation. In another possible embodiment, the cleaning assembly 30 can clean the accumulated debris on the chassis 10 when the blade disc assembly 20 stops mowing.

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

[0064] The cleaning component 30 is spaced apart from the cutter disc component 20. The present application does not specifically limit the spacing distance between the cleaning component 30 and the cutter disc component 20. In one possible embodiment, the spacing between the cleaning component 30 and the cutter disc component 20 may be less than or equal to 50 mm. In another possible embodiment, the spacing between the cleaning component 30 and the cutter disc component 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, 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, and the cleaning component 30 sprays fluid in the second state.

[0066] Understandably, in Figure 1 The cleaning assembly 30 of the chassis cleaning device 100 is in a first state. Figure 2 The cleaning component 30 in the chassis cleaning device 100 is in the second state. The cleaning component 30 can be switched between the first state and the second state, wherein the cleaning component 30 can clean weeds and the like on the chassis 10 in the second state. In a possible application scenario, when it is necessary to clean weeds and the like on the chassis 10, the cleaning component 30 can be switched from the first state to the second state and maintained in the second state; after the cleaning is completed, the cleaning component 30 can be switched from the second state to the first state and maintained in the first state. When the cleaning component 30 switches from the first state to the second state, the length is extended; when the cleaning component 30 switches from the second state to the first state, the length is shortened. The fluid sprayed by the cleaning component 30 in the second state includes but is not limited to liquid, gas, etc.

[0067] The chassis cleaning device 100 provided in the present application includes a chassis 10, a blade disc assembly 20 and a cleaning assembly 30. Since the blade disc assembly 20 and the cleaning assembly 30 are both arranged on the first side of the chassis 10, the cleaning assembly 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 disc assembly 20 is located, thereby avoiding the accumulation of debris such as grass clippings on the blade disc assembly 20, or on the chassis 10, or between the blade disc assembly 20 and the chassis 10, thereby improving the efficiency of the blade disc assembly 20 when performing mowing operations, and the cleaning assembly 30 is spaced apart from the blade disc assembly 20, so that the blade disc assembly 20 will not damage the cleaning assembly 30 when performing mowing operations. In addition, since 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, that is, the length in the non-cleaning mode, the cleaning range can be expanded and the cleaning effect can be improved by switching the cleaning component 30 between the first state and the second state. The cleaning component 30 has a longer length in the cleaning mode, so it can be blocked on one side of the blade disc assembly 20, so that it can play a guiding role during mowing operations and reduce the situation where debris remains on the chassis 10. The length of the cleaning component 30 in the non-cleaning mode is relatively short, so it can avoid the situation where the cleaning component 30 is damaged 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 is a schematic diagram of the structure of the cleaning component 30 in the first state, Figure 5 3 is a schematic diagram of the structure of the cleaning component 30 in the second state. The cleaning component 30 includes a telescopic member 301 and a spray member 302 connected to one end of the telescopic member 301. In the process of switching from the first state to the second state, the telescopic member 301 can be extended and can drive the spray member 302 to extend from one end of the chassis 10 to the other end. In the process of switching from the second state to the first state, the telescopic member 301 can be shortened and can drive the spray member 302 to retract.

[0069] The connection method between the telescopic member 301 and the injection member 302 includes but is not limited to threaded connection, snap connection, welding, bonding, etc. It can be understood that in the process of switching from the first state to the second state, the length of the injection member 302 does not change, but because the injection member 302 is connected to the telescopic member 301 and the telescopic member 301 is extended, the position of the injection member 302 relative to the chassis 10 is changed. Similarly, in the process of switching from the second state to the first state, the length of the injection member 302 does not change, but because the injection member 302 is connected to the telescopic member 301 and the telescopic member 301 is shortened, the position of the injection member 302 relative to the chassis 10 is changed.

[0070] Exemplarily, the extension of the telescopic member 301 may be that the telescopic member 301 extends under the driving force of the driving member; or the extension of the telescopic member 301 may be that the telescopic member 301 extends under the flow force of the fluid when the fluid is transmitted to the injection member 302. Exemplarily, the shortening of the telescopic member 301 may be that the telescopic member 301 shortens under the driving force of the driving member; or the shortening of the telescopic member 301 may be that the telescopic member 301 automatically shortens when no fluid is transmitted to the injection member 302 through the telescopic member 301. Wherein, the driving member includes but is not limited to a motor. The present application does not specifically limit the distance that the telescopic member 301 can extend when switching from the first state to the second state. Exemplarily, the telescopic member 301 can extend in the direction in which the telescopic member 301 extends, and the distance that the telescopic member 301 can extend can be greater than or equal to 1 / 2 of the distance from the mounting end of the telescopic member 301 to the other end of the chassis 10.

[0071] By making the cleaning assembly 30 include a telescopic member 301 and a spray member 302 connected to one end of the telescopic member 301, it is possible to achieve that when switching from the first state to the second state, the length of the cleaning assembly 30 can be extended, and when switching from the second state to the first state, the length of the cleaning assembly 30 can be shortened, that is, the length of the cleaning assembly 30 in the second state is greater than the length of the cleaning assembly 30 in the first state. In addition, by the telescopic member 301 driving the spray member 302 to extend and retract, while achieving that the length of the cleaning assembly 30 in the second state is greater than the length of the cleaning assembly 30 in the first state, it is also conducive to reducing the design difficulty of the cleaning assembly 30 and expanding the selection range of the spray member 302.

[0072] In a possible embodiment, the telescopic member 301 is connected to the injection member 302. In the second state, the fluid flows through the telescopic member 301 to the injection member 302. During the process of switching from the first state to the second state, the fluid flows through the telescopic member 301 and drives the telescopic member 301 to extend.

[0073] It is understandable that fluid can flow to injection member 302 through telescopic member 301. In the present embodiment, telescopic member 301 can be a hollow telescopic tube. The telescopic tube can ensure good sealing and stability of fluid transmission. One end of telescopic member 301 is formed with a first fluid inlet, and the other end of telescopic member 301 is formed with a fluid outlet. Injection member 302 can be a nozzle including a second fluid inlet and one or more injection ports. Wherein, the fluid outlet of telescopic member 301 is communicated with the second fluid inlet of injection member 302, and the injection port is used to inject fluid. When chassis cleaning device 100 needs to be cleaned, fluid can be passed from the first fluid inlet.

[0074] The communication method between the telescopic member 301 and the injection member 302 includes but is not limited to connecting the fluid outlet of the telescopic member 301 with the second fluid inlet of the injection member 302; or, the end of the telescopic member 301 with the fluid outlet is sleeved with the end of the injection member 302 with the second fluid inlet.

[0075] In this embodiment, the fluid flows through the telescopic member 301 and drives the telescopic member 301 to extend, so that the telescopic member 301 can be automatically extended. In this way, there is no need to set a driving member for driving the telescopic member 301 to extend, which is beneficial to reducing the parts of the chassis cleaning device 100 and simplifying the structure of the chassis cleaning device 100.

[0076] In a 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 is shortened due to its own elastic restoring force, so that the telescopic member 301 retracts.

[0077] It is understandable that the telescopic member 301 can be automatically retracted. In this embodiment, the telescopic member 301 is an elastic hollow telescopic tube, including but not limited to a bellows, or a cylindrical elastic telescopic tube, or a square elastic telescopic tube.

[0078] In this embodiment, the telescopic member 301 is shortened due to its own elastic restoring force, so that the telescopic member 301 can be automatically shortened. In this way, there is no need to set a driving member for driving the telescopic member 301 to shorten, which is beneficial to reducing the parts of the chassis cleaning device 100 and simplifying the structure of the chassis cleaning device 100.

[0079] In a possible embodiment, Figure 6 As shown, Figure 6 for Figure 5A cross-sectional schematic diagram of a telescopic member 301 in the cleaning assembly 30 is shown. The telescopic member 301 includes an inner tube 310 and an outer tube 311 arranged around the outer circumference 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. In the process of switching from the first state to the second state, the outer tube 311 is extended under the drive of the inner tube 310, and in the process of switching from the second state to the first state, the outer tube 311 is shortened under the drive of the inner tube 310.

[0080] Among them, the inner tube 310 is an elastic hollow tube, and the material of the inner tube 310 can be silicone, rubber, etc. This application does not specifically limit the elastic modulus of the inner tube 310, and it can achieve the corresponding stroke extension. The outer tube 311 is a flexible hollow tube, and the outer tube 311 is sleeved on the outside of the inner tube 310. The outer tube 311 can be inelastic, or the elasticity of the outer tube 311 can be less than the elasticity of the inner tube 310, and the material of the outer tube 311 is a flexible material that can bend. For example: the material of the outer tube 311 includes but is not limited to woven material. The inner tube 310 and the outer tube 311 can be directly connected or indirectly connected. When the inner tube 310 and the outer tube 311 are indirectly connected, the inner tube 310 and the outer tube 311 can be connected to the injection member 302. In a possible embodiment, the two ends of the outer tube 311 can be directly connected to the two ends of the inner tube 310 respectively, and there is no connection between the middle part of the outer tube 311 and the middle part of the inner tube 310.

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

[0082] In this embodiment, when the fluid flows through, the impact force of the fluid can stretch the inner tube 310, and because the outer tube 311 is connected to the inner tube 310, the inner tube 310 can stretch the outer tube 311, so that in the process of switching from the first state to the second state, the fluid flows through the telescopic member 301 and drives the telescopic member 301 to extend. At the same time, because the inner tube 310 is elastic, when there is no fluid flowing through, the inner tube 310 shortens due to its own elastic restoring force, and because the outer tube 311 is connected to the inner tube 310, the inner tube 310 can drive the outer tube 311 to retract, so that in the process of switching from the second state to the first state, the telescopic member 301 shortens due to its own elastic restoring force, so that the telescopic member 301 retracts.

[0083] Specifically, when the injected 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, after being subjected to airflow pressure, the inner tube 310 will expand and stretch along the length direction. It can produce a significant length extension when under pressure. The outer tube 311 is coated on the outside of the inner tube 310, and is usually a flexible material that can change, such as a woven material. It can stretch but lacks self-stretching ability. When the inner tube 310 elastically stretches under the action of the airflow, it drives the outer tube 311 to stretch and contract along the length direction. The role of the outer tube 311 is to protect the inner tube and transmit the movement of the inner tube to ensure 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 elongation length of the inner tube. By adjusting the air pressure of the air pump, the elongation range of the inner tube 310 can be controlled, thereby realizing precise adjustment of the elongation length of the cleaning component 30. When a longer cleaning range is required, the air pressure can be increased accordingly to make the inner tube 310 reach a greater elongation ratio. When it is necessary to retract or reduce the elongation, the air pressure can be reduced or the air pump can be stopped to restore the inner tube 310 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 driving the flexible outer tube 311 to retract together. 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] Exemplarily, when the fluid to be sprayed is liquid, the inner tube 310 of the cleaning component can also be extended in the above manner, but it is driven by a fluid pump, which 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 providing fluid or a box for storing fluid. Optionally, the viscosity of the liquid should be less than 10×10-4 moles. If the fluid can be water, an external water tank is installed on the lawn mower or a retractable water pipe that can be connected to the outside of the faucet is installed on the lawn mower, such as a faucet or a water tank installed on the lawn mower.

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

[0088] The material of the clamp 303 may be plastic, metal, etc. The shape of the clamp 303 may be annular, U-shaped, or tubular, etc. The clamp 303 may be elastic, or inelastic.

[0089] The clamp 303 can improve the connection reliability between the telescopic member 301 and the injection member 302, thereby preventing the telescopic member 301 and the injection member 302 from being separated due to excessive pressure when the fluid flows through the connection between the telescopic member 301 and the injection member 302.

[0090] In a possible embodiment, Figure 7 As shown, Figure 7 for Figure 5 The cleaning assembly 30 shown in the figure includes a plurality of spray ports. The cleaning assembly 30 has at least one first spray port 320 and at least one second spray port 321. In the second state, the direction of the fluid sprayed from the first spray port 320 is opposite to the direction of the fluid sprayed from the second spray port 321.

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

[0092] Optionally, the number of the first injection port 320 may be one, and the number of the second injection port 321 may be multiple. In a 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 is extended, 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 is shortened.

[0093] By making the cleaning component 30 have at least one first jet port 320 and at least one second jet port 321, in the second state, the direction of the fluid ejected from the first jet port 320 is opposite to the direction of the fluid ejected from the second jet port 321, and cleaning in multiple directions can be achieved, thereby enhancing the cleaning effect and effectively cleaning the debris on the chassis 10.

[0094] In a possible embodiment, the fluid is gas. It is understandable that this embodiment is combined with the above-mentioned embodiment in which the cleaning assembly 30 includes a telescopic member 301 and an injection member 302, so that the telescopic member 301 can be extended under the action of gas pressure when gas flows through it, and shortened under its own elastic restoring force when no gas flows through it. In the second state, the injection member 302 injects gas.

[0095] By making the fluid a gas, it is helpful to reduce the weight of the chassis cleaning device 100 and avoid the need to provide a water tank on the chassis cleaning device 100 or to connect to a water inlet.

[0096] In a possible embodiment, Figure 8 As shown, Figure 8 for Figure 1 The chassis cleaning device 100 further includes a schematic structural diagram of an air pump assembly 40. The chassis cleaning device 100 further includes an air pump assembly 40 disposed on a second side of the chassis 10. The air pump assembly 40 has an air inlet and an air outlet, and the air outlet is communicated with the cleaning assembly 30. The air pump assembly 40 is used to deliver gas to the cleaning assembly 30.

[0097] The air pump assembly 40 can provide gas for the cleaning assembly 30. In a possible embodiment, the air pump assembly 40 may include an air pump 401 and an air pipe 402 connected between the air pump 401 and the cleaning assembly 30. In the embodiment of the present application, one end of the air pipe 402 is connected to the air pump 401, and the other end of the air pipe 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 pipe 402. When the air pump 401 is turned off, the air pump 401 stops compressing the air.

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

[0099] Among them, 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 docking one end of the air pipe 402 away from the air pump 401 with the first fluid inlet of the telescopic part 301; or, one end of the air pipe 402 away from the air pump 401 is sleeved together with one end of the telescopic part 301 forming the first fluid inlet.

[0100] In this embodiment, the air pump assembly 40 is provided to provide air for the cleaning assembly 30, and the state of the air pump 401 is controlled to switch the cleaning assembly 30 between the cleaning mode and the non-cleaning mode. In addition, by arranging the air pump assembly 40 on the second side of the chassis 10 and the blade disc assembly 20 on the first side of the chassis 10, it is helpful to avoid the situation where the height difference between the blade disc assembly 20 and the ground increases when the height of the air pump assembly 40 is high, thereby affecting the mowing efficiency.

[0101] For further information, please refer to Fig. 9 and Fig.10 , Fig. 9 A structural schematic diagram of a lawn mower 1000 provided in an embodiment of the present application, Fig.10 for Fig. 9 A schematic diagram of the structure of the chassis cleaning device 100 in the lawn mower 1000 is shown. The present application also provides a lawn mower 1000. The lawn mower 1000 includes a walking device 50, a driving assembly, and the chassis cleaning device 100 described in any of the above embodiments. The walking device 50 is used to achieve the walking of the lawn mower 1000. The driving assembly is connected to the cutter disc assembly 20 and is used to drive the cutter disc assembly 20 to rotate.

[0102] In a 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. The present application does not specifically limit the number of walking wheels. For example: the number of walking wheels may be two, three, or four.

[0103] In a possible embodiment, the drive assembly may include a second motor and a second transmission mechanism. The second motor and the first motor may be the same motor, or may be independent motors. The second transmission mechanism is connected between the second motor and the cutter disc assembly 20 for transmitting the power output by the second motor to the cutter disc assembly 20.

[0104] Of course, the lawn mower 1000 may further include a lifting component, which can be used to achieve the lifting of the chassis cleaning device 100 .

[0105] In a possible embodiment, the blade disc assembly 20 includes a first sub-blade disc assembly 21 and a second sub-blade disc assembly 22 that are spaced apart, the cleaning assembly 30 is disposed between the first sub-blade disc assembly 21 and the second sub-blade disc assembly 22, and the cleaning assembly 30 is spaced apart from the first sub-blade disc assembly 21 and the second sub-blade disc assembly 22.

[0106] Optionally, the first sub-knife disc assembly 21 and the second sub-knife disc assembly 22 may be spaced apart along the length direction of the chassis 10. The present application does not specifically limit the spacing distance between the cleaning assembly 30 and the first sub-knife disc assembly 21, and the spacing distance between the cleaning assembly 30 and the second sub-knife disc assembly 22. The spacing distance between the cleaning assembly 30 and the first sub-knife disc assembly 21, and the spacing distance between the cleaning assembly 30 and the second sub-knife disc assembly 22 may be the same, or may be different.

[0107] The first sub-knife disc assembly 21 may include a first knife disc body 210 and a plurality of first blades 211 arranged along the circumferential edge of the first knife disc body 210. The second sub-knife disc assembly 22 may include a second knife disc body 220 and a plurality of second blades 221 arranged along the circumferential edge of the second knife disc body 220. The material of the first knife disc body 210 may be the same as or different from the material of the second knife disc body 220. The shape of the first knife disc body 210 may be the same as or different from the shape of the second knife disc body 220. The shape of the first blade 211 may be the same as or different from the shape of the second blade 221. The material of the first blade 211 may be the same as or different from the material of the second blade 221. The number of the first blade 211 may be the same as or different from the number of the second blade 221.

[0108] In this embodiment, the blade disc assembly 20 of the lawn mower 1000 includes a first blade disc assembly 21 and a second blade disc assembly 22 which are arranged at intervals, which is conducive to expanding the operating range of the lawn mower 1000 when performing a mowing operation. Since the blade disc assembly 20 includes a first blade disc assembly 21 and a second blade disc assembly 22 which are arranged at intervals, the area between the first blade disc assembly 21 and the second blade disc assembly 22 is an area where weeds are easily accumulated, so the cleaning efficiency can be improved by arranging the cleaning assembly 30 between the first blade disc assembly 21 and the second blade disc assembly 22, and the cleaning assembly 30 is arranged between the first blade disc assembly 21 and the second blade disc assembly 22, so that the first blade disc assembly 21 and the second blade disc assembly 22 will not be blocked from performing a mowing operation, nor will it interfere with the rotation of the first blade disc assembly 21 and the second blade disc assembly 22. In addition, the cleaning component 30 is arranged between the first sub-blade disc component 21 and the second sub-blade disc component 22. During the mowing process, the cleaning component 30 can play a guiding role to reduce the residue of debris between the first sub-blade disc component 21 and the second sub-blade disc component 22.

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

[0110] It can be understood that the structure of the first sub-knife disc assembly 21 is the same as that of the second sub-knife disc assembly 22, and they are symmetrically arranged. The arrangement direction of the first sub-knife disc assembly 21 and the second sub-knife disc assembly 22 is perpendicular to the telescopic direction of the cleaning assembly 30. The target axis can be referred to as Fig.10 In the embodiment of the present application, the arrangement direction of the first sub-knife disc assembly 21 and the second sub-knife disc assembly 22 is along the length direction of the chassis 10, and the extension 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-knife disc assembly 21 and the second sub-knife disc assembly 22 can be along the width direction of the chassis 10, and the extension direction of the cleaning assembly 30 can be along the length direction of the chassis 10.

[0111] By making the first blade disc assembly 21 and the second blade disc assembly 22 symmetrical about the target axis, the symmetry of the operation of the lawn mower 1000 can be improved. And making the target axis extend along the extension direction of the cleaning assembly 30 when switching from the first state to the second state is conducive to the cleaning assembly 30 being able to more accurately clean the position where more debris is accumulated on the chassis 10, thereby improving the cleaning efficiency and mowing efficiency.

[0112] In one possible embodiment, please refer to Figures 9 to 11 , Fig.11 for Fig.10 The lawn mower 1000 is a circuit block diagram of the lawn mower 1000, and the lawn mower 1000 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 accumulation on the chassis 10. The control component 7 is used to control the cleaning component 30 to switch between the first state and the second state according to the detection result of the detection component 6.

[0113] The detection component 6 can be a pressure detection component, or a visual detection component, etc. When the detection component 6 is a pressure detection component, the detection component 6 can sense the pressure signal when objects are piled up on the chassis 10, and the control component 7 can determine the amount of debris accumulation on the chassis 10 according to the pressure signal, so that when it is determined that cleaning is required, the cleaning component 30 is switched from the first state to the second state. When the detection component 6 is a visual detection component, the detection component 6 can obtain image information when objects are piled up on the chassis 10, and the control component 7 can determine the amount of debris accumulation on the chassis 10 according to the image information, so that when it is determined that cleaning is required, the cleaning component 30 is switched from the first state to the second state.

[0114] By making the lawn mower 1000 include a detection component 6 and a control component 7, intelligent control of the switching of the cleaning component 30 between the first state and the second state can be implemented. For example, by setting a threshold value for the amount of debris accumulation, the cleaning frequency can be limited to avoid situations where manual determination of whether cleaning is needed results in untimely cleaning or too frequent cleaning.

[0115] In a possible embodiment, Fig.10 As shown, the detection component 6 includes at least one pressure sensor 60. The pressure sensor 60 is disposed 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 at both ends of the chassis 10 opposite to the cleaning component 30. As debris accumulates on the chassis 10, the weight of the lawn mower 1000 increases, and the pressure sensor 60 cleans the chassis 10 by detecting changes in its pressure.

[0116] The present application does not specifically limit the number of the pressure sensors 60. The number of the pressure sensors 60 may be one or more. When the number of the pressure sensors 60 is one, the pressure sensor 60 and the cleaning assembly 30 are arranged at two ends of the chassis 10 relative to each other. When the number of the pressure sensors 60 is multiple, the multiple pressure sensors 60 may include one or more main pressure sensors, and the main pressure sensors and the cleaning assembly 30 are arranged at two ends of the chassis 10 relative to each other, and the remaining pressure sensors 60 may be dispersedly arranged around the main pressure sensor.

[0117] The pressure sensor 60, the blade assembly 20 and the cleaning assembly 30 are arranged on the same side of the chassis 10. It can be understood that in the embodiment where the blade assembly 20 is arranged on the first surface 101 of the chassis 10, the pressure sensor 60 is arranged on the first surface 101 of the chassis 10; in the embodiment where the blade assembly 20 is arranged on the second surface 102 of the chassis 10, the pressure sensor 60 is arranged on the second surface 102 of the chassis 10. In the embodiment of the present application, the main pressure sensor and the cleaning assembly 30 are arranged opposite to each other along the width direction of the chassis 10.

[0118] By arranging the pressure sensor 60 on the first side of the chassis 10, the pressure sensor 60 can directly obtain the pressure exerted on the chassis 10 by the objects accumulated on the chassis 10, which is conducive to 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, since multi-point detection can be achieved, it is also conducive to improving the accuracy of detecting the amount of debris accumulated on the chassis 10. Since the position design of the cleaning component 30 is more conducive to cleaning the area with more objects accumulated on the chassis 10, by making at least one pressure sensor 60 include at least one main pressure sensor, the main pressure sensor and the cleaning component 30 are arranged at the two ends of the chassis 10 relatively, which is more conducive to detecting the pressure signal of the area with more objects accumulated, thereby avoiding the situation of untimely cleaning.

[0119] In addition, the present application also provides a chassis cleaning method, which is implemented in the chassis cleaning device 100 described in any of the above embodiments. Fig.11 and Fig.12 , Fig.12 A schematic flow chart of a chassis cleaning method provided in an embodiment of the present 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 the chassis 10.

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

[0124] The specific method of detecting the amount of debris accumulation on the chassis 10 in step S10 may be that the pressure sensor 60 detects the pressure value generated by the amount of debris accumulation on the chassis 10 ; or, it may be that the visual sensor detects the image generated by the amount of debris accumulation on the chassis 10 .

[0125] Similarly, the specific method of step S12 to detect the amount of debris accumulation on the chassis 10 again can be that the pressure sensor 60 detects the pressure value generated by the amount of debris accumulation on the chassis 10 again; or, it can be that the visual sensor detects the image generated by the amount of debris accumulation on the chassis 10 again.

[0126] Step S10 of detecting the amount of debris accumulation on the chassis 10 may be to start detecting the amount of debris accumulation on the chassis 10 after a first preset time of the operation; or, it may be to start detecting the amount of debris accumulation on the chassis 10 after a single operation is completed; or, it may be to detect the amount of debris accumulation on the chassis 10 while starting the operation; or, it may be to start detecting the amount of debris accumulation on the chassis 10 after receiving a first instruction input by the user.

[0127] Step S12 of re-detecting the amount of debris accumulation on the chassis 10 may be started after the cleaning component 30 remains in the second state for a second preset time, or may be started after receiving a second instruction input by the user.

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

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

[0130] It can be understood that steps S10 and S11 are used to determine whether the chassis cleaning device 100 needs to be cleaned, and when cleaning is needed, the cleaning component 30 is in the cleaning mode. Steps S12 and S13 are used to determine whether the chassis cleaning device 100 has completed cleaning, and after cleaning, the cleaning component 30 is in the non-cleaning mode.

[0131] In a possible embodiment, Fig.13 As shown, Fig.13 Another flow chart of the chassis cleaning method provided in the embodiment of the present application. 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 detects the amount of debris accumulation on the chassis 10, including but not limited to the following step S121.

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

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

[0134] It can be understood that the chassis cleaning method of this embodiment is executed on a lawn mower 1000 provided with a pressure sensor 60. In the embodiment where the lawn mower 1000 is provided with one pressure sensor 60, the pressure detection value of the pressure sensor 60 can be obtained. In the embodiment where the lawn mower 1000 is provided with multiple pressure sensors 60, the pressure detection values ​​of all the pressure sensors 60 can be obtained. In this embodiment, the first preset threshold value can be a first preset pressure value, and the second preset threshold value can be a second preset pressure value. The first preset pressure value is greater than the second preset pressure value.

[0135] At this time, in an embodiment where the lawn mower 1000 is provided with a plurality of pressure sensors 60, it is possible to determine whether the amount of debris accumulation on the chassis 10 is greater than or equal to a first preset threshold by determining the average value of the plurality of pressure detection values ​​and the size of the first preset pressure value; or it is possible to determine whether the amount of debris accumulation on the chassis 10 is greater than or equal to the first preset threshold by determining the size of the maximum pressure detection value and the first preset pressure value.

[0136] Similarly, in an embodiment where the lawn mower 1000 is provided with a plurality of pressure sensors 60, it is possible to determine whether the amount of debris accumulation on the chassis 10 is less than or equal to the second preset threshold by determining the difference between the average value of the plurality of pressure detection values ​​and the second preset pressure value; or it is possible to determine whether the amount of debris accumulation on the chassis 10 is greater than or equal to the second preset threshold by determining the difference between the minimum pressure detection value and the second preset pressure value.

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

[0138] In one possible embodiment, please refer to Fig.12 and Fig.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 an 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] In step S13, "controlling the cleaning component 30 to switch from the second state to the first state and maintain it in the first state" includes: controlling the air pump component 40 to be in a closed state so that the cleaning component 30 switches from the second state to the first state and maintains it in the first state.

[0140] It can be understood that the chassis cleaning method of this embodiment is performed on a chassis cleaning device 100 provided with an air pump assembly 40. In the embodiment where the cleaning assembly 30 includes a telescopic member 301 and an injection member 302, and the telescopic member 301 is extended under the action of air pressure when gas flows through it, and is shortened under its own elastic restoring force when no gas flows through it, the air pump assembly 40 is controlled to be in an open state, and the cleaning assembly 30 is also controlled to be able to switch from the first state to the second state and remain in the second state. Similarly, the air pump assembly 40 is controlled to be in a closed state, and the cleaning assembly 30 is also controlled to be able to switch from the second state to the first state and remain in the first state.

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

[0142] S14: Detect 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, the air pump component 40 is controlled to be in a closed state and a reminder instruction is issued.

[0144] Among them, step S14, "detecting whether the cleaning component 30 has an abnormality" may include: detecting whether the cleaning component 30 can switch between the first state and the second state normally; and / or, detecting whether the cleaning component 30 can spray fluid normally. Step S14 "detecting whether the air pump component 40 has an abnormality" may include: detecting whether the air pump component 40 can compress air normally; and / or, detecting whether the air inlet of the air pump component 40 can normally intake air; and / or, detecting whether the air outlet of the air pump component 40 can normally discharge air. Step S14 may be located before step S10. When there is an abnormality in the cleaning component 30 or the air pump component 40, step S15 is executed. When there is no abnormality in the cleaning component 30 or the air pump component 40, steps S10, step S11, step S12 and step S13 are executed.

[0145] Step S15 "controls the air pump assembly 40 to be in the closed state" means that the air pump assembly 40 stops delivering gas to the cleaning assembly 30. At this time, in the embodiment where the cleaning assembly 30 includes a telescopic member 301 and an injection member 302, and the telescopic member 301 is extended under the action of air pressure when gas flows through it, and is shortened under its own elastic restoring force when no gas flows through it, controlling the air pump assembly 40 to be in the closed state also controls the cleaning assembly 30 to be in the first state. Among them, issuing a reminder instruction can be issuing a preset voice signal, or issuing a preset alarm.

[0146] This embodiment detects the cleaning component 30 and the air pump component 40, and when any of the cleaning component 30 and the air pump component 40 is abnormal, a reminder is issued to the operator, thereby avoiding ineffective cleaning.

[0147] The features mentioned above in the description, claims and drawings can be combined with each other in any way as long as they are meaningful within the scope of the present application. The advantages and features described for the undercarriage cleaning device 100 apply to the lawn mower 1000 in a corresponding manner.

[0148] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also regarded as the scope of protection of the present application.

Claims

1. A chassis cleaning device, characterized in that: include: Chassis; A cutter head assembly is disposed on a first side of the chassis; and A cleaning component is arranged on a first side of the chassis and is spaced apart from the cutter disc component. The cleaning component has a first state and a second state. The first state is the state of the cleaning component in a non-cleaning mode, and the second state is the state of the cleaning component in a 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, and the cleaning component sprays fluid in the second state.

2. The chassis cleaning device according to claim 1, characterized in that: The cleaning component includes a telescopic part and a spray part connected to one end of the telescopic part. During the process of switching from the first state to the second state, the telescopic part can be extended and can drive the spray part to extend from one end of the chassis toward the other end. During the process of switching from the second state to the first state, the telescopic part can be shortened and can drive the spray part to retract.

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

4. The chassis cleaning device according to claim 3, characterized in that: The telescopic member is elastic. During the switching process from the second state to the first state, the telescopic member is shortened due to its own elastic restoring force, so that the telescopic member retracts.

5. The chassis cleaning device according to claim 4, characterized in that: The telescopic member includes an inner tube and an outer tube arranged around the outer circumference 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 process of switching from the first state to the second state, the outer tube is extended by the inner tube, and during the process of switching from the second state to the first state, the outer tube is shortened by the inner tube.

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

7. The chassis cleaning device according to any one of claims 1 to 5, characterized in that: The cleaning component has at least one first jet port and at least one second jet port. In the second state, the direction of the fluid jetted from the first jet port is opposite to the direction of the fluid jetted from the second jet port.

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

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

10. A lawn mower, characterized in that: It comprises a walking device, a driving assembly and a chassis cleaning device according to any one of claims 1 to 9, wherein the walking device is used to realize the walking of the lawn mower, and the driving assembly is connected to the cutter disc assembly to drive the cutter disc assembly to rotate.

11. The lawn mower according to claim 10, characterized in that The blade disc assembly comprises a first sub-blade disc assembly and a second sub-blade disc assembly which are arranged at intervals. The cleaning assembly is arranged between the first sub-blade disc assembly and the second sub-blade disc assembly, and the cleaning assembly is arranged at intervals from the first sub-blade disc assembly and the second sub-blade disc assembly.

12. The lawn mower according to claim 11, characterized in that The first sub-blade disc assembly is symmetrical to the second sub-blade disc assembly about a target axis, and the target axis extends along a stretching direction of the cleaning assembly when the cleaning assembly switches from the first state to the second state.

13. The lawn mower according to claim 10, characterized in that The lawn mower 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 accumulation on the chassis, and the control component is used to control the cleaning component to switch between the first state and the second state according to the detection result of the detection component.

14. The lawn mower according to claim 13, characterized in that The detection component includes at least one pressure sensor, which is arranged on the first side of the chassis. The at least one pressure sensor includes at least one main pressure sensor, which is arranged at two ends of the chassis opposite to the cleaning component.

15. A chassis cleaning method, 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, controlling the cleaning component to switch from a first state to a second state and maintain the cleaning component in the second state; Detecting the amount of debris accumulated on the chassis 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.

16. The chassis cleaning method according to claim 15, characterized in that: The detection of the amount of debris accumulation on the chassis includes: Get the pressure detection value of the pressure sensor; The re-detecting the amount of debris accumulation on the chassis includes: The pressure detection value of the pressure sensor is acquired again.

17. The chassis cleaning method according to claim 15, characterized in that: The controlling the cleaning component to switch from the first state to the second state and maintain the cleaning component in the second state comprises: Controlling the air pump assembly to be in an on state, so that the cleaning assembly switches from a first state to a second state and remains in the second state; The controlling the cleaning component to switch from the second state to the first state and maintain the cleaning component in the first state comprises: The air pump assembly is controlled to be in a closed state, so that the cleaning assembly is switched from the second state to the first state and maintained in the first state.

18. The chassis cleaning method according to claim 17, characterized in that: Also includes: Detect whether the cleaning component and the air pump component are abnormal; When there is an abnormality in the cleaning component or the air pump component, the air pump component is controlled to be in a closed state and a reminder instruction is issued.

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