Control method and cleaning device

Abstract

A control method and a cleaning device. The control method is applied to the cleaning device. The cleaning device comprises a machine body, mop disk assemblies, drive assemblies and adjustable connecting portions; the mop disk assemblies are rotatably arranged at the bottom of the machine body under the drive of the drive assemblies; and the adjustable connecting portions are connected to the drive assemblies and the mop disk assemblies. The control method comprises: measuring the degree of soiling of a surface to be cleaned; and regulating the output rotational speed of the drive assemblies on the basis of the degree of soiling, wherein when the output rotational speed is N1, the output rotational speed of the drive assemblies drives the length of the adjustable connecting portions to be L1, and when the output rotational speed is N2, the output rotational speed of the drive assemblies drives the length of the adjustable connecting portions to be L2, wherein N2 is greater than N1, and L2 is greater than L1. The technical problem that cleaning pressure cannot be regulated on the basis of the degree of soiling during the operation of cleaning devices can be mitigated.

Description

Control method and cleaning device

[0001] The present application claims priority to the Chinese patent application No. 202411328564.8, filed on September 24, 2024, and entitled "A control method and cleaning device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of cleaning, in particular to a control method and cleaning device. BACKGROUND

[0003] In the prior art, the cleaning device keeps the same operating height of the cloth tray assembly relative to the machine body during the cleaning operation, which results in a fixed cleaning pressure between the cloth tray assembly and the surface to be cleaned. During the operation, only a single pressure can be used for cleaning, which limits the optimization of the control logic during the operation of the cleaning device and results in poor user experience. SUMMARY

[0004] In view of the above shortcomings of the prior art, the present application provides a control method and cleaning device to improve the technical problem that the cleaning pressure cannot be adjusted according to the dirt level during the operation of the cleaning device.

[0005] To achieve the above object and other related objects, the present application provides a control method applied to a cleaning device, the cleaning device comprising a machine body, a cloth tray assembly, a driving assembly, and an adjustable connecting part. The cloth tray assembly is rotatably arranged at the bottom of the machine body under the driving of the driving assembly. The adjustable connecting part connects the driving assembly and the cloth tray assembly. The control method comprises the following steps: detecting the dirt level of the surface to be cleaned; adjusting the output speed of the driving assembly according to the dirt level. When the output speed is N1, the output speed of the driving assembly drives the length of the adjustable connecting part to be L1. When the output speed is N2, the output speed of the driving assembly drives the length of the adjustable connecting part to be L2, wherein N2 is greater than N1, and L2 is greater than L1.

[0006] In an example of the control method of the present application, adjusting the output speed of the driving assembly according to the dirt level further comprises: when the output speed is N3, the output speed of the driving assembly drives the length of the adjustable connecting part to be L3, wherein N3 is greater than N2, and L3 is greater than L2.

[0007] In an example of the control method, the cleaning device further comprises a water supply device for supplying water to the cloth disc assembly, and the control method further comprises: adjusting the amount of water supplied by the water supply device to the cloth disc assembly according to the output speed, wherein the amount of water supplied to the cloth disc assembly is Q1 when the output speed is N1, and the amount of water supplied to the cloth disc assembly is Q2 when the output speed is N2, and Q1 is greater than Q2.

[0008] In an example of the control method, the control method further comprises: adjusting the amount of water supplied by the water supply device to the cloth disc assembly according to the output speed, wherein the amount of water supplied to the cloth disc assembly is Q3 when the output speed is N3, and Q2 is greater than Q3.

[0009] In an example of the control method, the output speed of the driving assembly is adjusted according to the dirt level, and the control method further comprises: obtaining a target speed and a current speed of the driving assembly; and driving the adjustable connecting part to switch between the length L1 and the length L2 through a speed difference between the target speed and the current speed.

[0010] In an example of the control method, the adjustable connecting part comprises a connecting assembly and a pressure adjusting assembly, the connecting assembly comprises an elastic member and a first connecting piece, the first connecting piece is arranged on the cloth disc assembly and is used for being connected with the driving end of the driving assembly, one end of the elastic member is connected with the first connecting piece, and the other end of the elastic member is connected with the cloth disc assembly; the pressure adjusting assembly comprises a lifting surface and an abutting part, one of the lifting surface and the abutting part is arranged on the side of the cloth disc assembly facing the first connecting piece, and the other of the lifting surface and the abutting part is arranged on the side of the first connecting piece facing the cloth disc assembly; and the abutting part slides along the lifting surface to make the adjustable connecting part lengthen or shorten.

[0011] In an example of the control method, one of the first connecting piece and the cloth disc assembly is provided with a boss, the lifting surface is located on the top of the boss, the abutting part is arranged on the other of the first connecting piece and the cloth disc assembly corresponding to the boss, and limiting bodies for limiting the boss are arranged on both sides of the abutting part.

[0012] In an example of the control method, one of the first connecting piece and the cloth disc assembly is provided with a groove, the lifting surface is located on the groove bottom, and the abutting part is arranged on the other of the first connecting piece and the cloth disc assembly corresponding to the groove and extends into the groove to abut against the lifting surface.

[0013] In an example of the control method, the abutting part comprises an abutting surface matched with the shape of the lifting surface, the abutting surface abuts with the lifting surface, and the abutting surface slides relative to the lifting surface when there is a speed difference between the abutting part and the lifting surface.

[0014] In an example of the control method, a plurality of lifting surfaces are arranged, the plurality of lifting surfaces are arranged in an array along the circumference of the first connecting piece, and each lifting surface corresponds to at least one abutting part.

[0015] In an example of the control method, the first connecting member is provided with a receiving cavity, the dishcloth disc assembly comprises a dishcloth mounting rack and a second connecting member, the second connecting member is slidingly mounted on the first connecting member, and one end of the second connecting member extends into the receiving cavity along a sliding direction, and the other end of the second connecting member is connected with the dishcloth mounting rack; one end of the elastic member is connected with the second connecting member, and the other end of the elastic member is connected with a wall of the receiving cavity.

[0016] In an example of the control method, the second connecting member comprises a columnar portion and a limiting portion, one end of the columnar portion extends into the receiving cavity and is connected with the limiting portion, and the other end of the columnar portion is connected with the dishcloth mounting rack; the limiting portion at least partially extends to an outer periphery of the columnar portion; the elastic member is circumferentially arranged around the columnar portion and is arranged between the limiting portion and a bottom wall of the receiving cavity.

[0017] In an example of the control method, the second connecting member comprises a sleeve portion, a columnar portion and a limiting portion, one end of the sleeve portion is connected with the dishcloth mounting rack, and the other end of the sleeve portion is detachably connected with the columnar portion, one end of the columnar portion extends into the receiving cavity and is connected with the limiting portion, and the limiting portion at least partially extends to an outer periphery of the sleeve portion.

[0018] In an example of the control method, the elastic member generates deformation to store energy by compression, and the elastic member is any one of a spring, a spring sheet, an elastic ball, a gas pressure support and a hydraulic pressure support.

[0019] In an example of the control method, the elastic member generates deformation to store energy by stretching, and the elastic member is any one of a spring, a spring sheet, a gas pressure support and a hydraulic pressure support.

[0020] In an example of the control method, one end of the first connecting member away from the dishcloth disc assembly is provided with a first connecting component, the driving end is provided with a second connecting component, one of the first connecting component and the second connecting component is a magnet, and the other is a ferromagnetic body; or, the first connecting component and the second connecting component are both magnets, and the magnetic properties of the first connecting component and the second connecting component are opposite, and the first connecting component and the second connecting component are magnetically attracted and connected.

[0021] In an example of the control method, a side of the first connecting member away from the dishcloth disc assembly is provided with a mounting groove, the first connecting component is at least partially accommodated in the mounting groove, and a bottom wall of the mounting groove is at least partially supported on a lower edge of the first connecting component.

[0022] In an example of the control method, an inner wall of the receiving cavity is provided with a stop portion extending towards a center of the receiving cavity, the stop portion is located below an opening of the receiving cavity, and the stop portion stops the second connecting member to limit downward movement of the second connecting member relative to the receiving cavity.

[0023] In an example of the control method, the outer circumferential surface of the first connecting member is a polygonal cylindrical structure, and the driving end is provided with a polygonal hole structure matching the outer circumferential surface of the first connecting member.

[0024] In an example of the control method, the driving assembly further comprises a lifting driving mechanism, which can drive the cloth disc assembly to land on the surface to be cleaned and can drive the cloth disc assembly to lift away from the surface to be cleaned.

[0025] In an example of the control method, the lifting driving mechanism comprises a threaded lifting mechanism, which comprises a first shaft sleeve, a second shaft sleeve and a damping sleeve, the driving assembly is used to drive the first shaft sleeve to rotate, the second shaft sleeve is coaxially arranged outside the first shaft sleeve and is connected with the cloth disc assembly, and a screw mechanism is arranged between the first shaft sleeve and the second shaft sleeve; the damping sleeve is connected with the shell of the driving assembly and is arranged outside the second shaft sleeve and in abutment with the second shaft sleeve in an interference fit; the second shaft sleeve realizes lifting movement between the first shaft sleeve through the screw mechanism to drive the cloth disc assembly to land on and lift away from the surface to be cleaned.

[0026] The application further provides a cleaning device, which adopts the control method in any of the examples during the cleaning operation.

[0027] The control method provided by the application detects the dirt degree of the surface to be cleaned and adjusts the output rotating speed of the driving assembly according to the dirt degree, when the output rotating speed is N1, the output rotating speed of the driving assembly drives the length of the adjustable connecting part to be L1, when the output rotating speed is N2, the output rotating speed of the driving assembly drives the length of the adjustable connecting part to be L2, wherein N2 is greater than N1 and L2 is greater than L1. In this way, the dirt degree of the surface to be cleaned is associated with the running length of the adjustable connecting part. Since the adjustable connecting part connects the cloth disc assembly with the machine body, the running length of the adjustable connecting part is controlled to adjust the installation height of the cloth disc assembly relative to the machine body, so as to adjust the contact pressure between the cloth disc assembly and the surface to be cleaned and improve the problem of single cleaning pressure of the cloth disc assembly, so as to better adapt to different cleaning operation conditions of different dirt degrees and take into account the cleaning effect of different operation conditions. At the same time, since N2 is greater than N1 and L2 is greater than L1, the operation speed and operation pressure of the cloth disc assembly can be linked and controlled, which is conducive to the optimization of the control logic of the cleaning device during operation, so as to select smaller contact pressure and lower operation speed to clean the surface to be cleaned when the dirt degree of the surface to be cleaned is lighter, save the output power of the driving assembly and achieve the effect of energy saving; when the surface to be cleaned encounters stubborn stains, larger contact pressure and higher operation speed are selected to clean the surface to be cleaned, so as to improve the cleaning effect of the cloth disc assembly on the stubborn stains, and therefore the user experience of the cleaning device can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0029] Fig. 1 is a flow diagram of an example of the control method of the present application;

[0030] Fig. 2 is a flow diagram of step S2 provided by an embodiment of the control method of the present application;

[0031] Fig. 3 is a three-dimensional diagram of an embodiment of the cleaning device of the present application;

[0032] Fig. 4 is an exploded diagram of the cloth tray assembly and the body of an embodiment of the cleaning device of the present application;

[0033] Fig. 5 is a partial sectional view of the cloth tray assembly when the abutting portion is located at the second position of the lifting surface of an embodiment of the cleaning device of the present application;

[0034] Fig. 6 is a partial enlarged view of region A in Fig. 5;

[0035] Fig. 7 is a three-dimensional diagram of an angle of the cloth tray assembly of an embodiment of the cleaning device of the present application;

[0036] Fig. 8 is a partial enlarged view of region C in Fig. 7;

[0037] Fig. 9 is a structural diagram of the abutting portion provided on the first connecting member of an embodiment of the cleaning device of the present application;

[0038] Fig. 10 is a structural diagram of the lifting surface provided on the first connecting member of an embodiment of the cleaning device of the present application;

[0039] Fig. 11 is a structural diagram of the abutting portion provided on the cloth mounting rack of an embodiment of the cleaning device of the present application;

[0040] Fig. 12 is a structural diagram of the mounting structure between the second connecting member and the cloth mounting rack of an embodiment of the cleaning device of the present application;

[0041] Fig. 13 is a structural diagram of the elastic member being a tension spring of an embodiment of the cleaning device of the present application;

[0042] Fig. 14 is a three-dimensional diagram of another angle of the first connecting member of an embodiment of the cleaning device of the present application;

[0043] Fig. 15 is a top view of the first connecting member of an embodiment of the cleaning device of the present application;

[0044] Fig. 16 is a sectional view of Fig. 15 along the direction of D-D;

[0045] Fig. 17 is a partial sectional view of the cleaning device of an embodiment of the present application, showing the abutting portion in the first position of the lifting surface;

[0046] Fig. 18 is an enlarged view of the area B of Fig. 17;

[0047] Fig. 19 is a schematic view of the connecting structure between the spiral lifting structure and the cloth disc assembly of an embodiment of the cleaning device of the present application;

[0048] Fig. 20 is a schematic view of the partial structure of the spiral lifting structure of an embodiment of the cleaning device of the present application.

[0049] Element No. Description 10, cleaning device; 11, body; 12, driving assembly; 121, driving end; 1211, second connecting part; 13, cloth disc assembly; 131, second connecting part; 1311, column part; 1312, limiting part; 1313, sleeve part; 132, cloth mounting rack; 1321, accommodating groove; 133, cloth; 101, adjustable connecting part; 14, connecting assembly; 141, elastic part; 1411, upper connecting part; 1412, lower connecting part; 142, first connecting part; 1421, accommodating cavity; 14211, mounting groove; 14212, stop part; 15, pressure adjusting assembly; 151, lifting surface; 152, abutting part; 1521, abutting surface; 153, groove; 154, boss; 155, limiting body; 16, first connecting part; 170, threaded lifting mechanism; 171, first shaft sleeve; 1711, first end wall; 1712, first side wall; 1713, first accommodating cavity; 172, second shaft sleeve; 1721, second end wall; 1722, second side wall; 1723, second accommodating cavity; 1724, boss part; 1725, third accommodating cavity; 173, spiral mechanism; 1731, threaded groove; 1732, threaded rib; 174, damping sleeve; 1741, protrusion. DETAILED DESCRIPTION

[0050] The present application is herein described, by way of example only, with the assistance of the accompanying drawings in which: Figure 1 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 2 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 3 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 4 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 5 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 6 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 7 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 8 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 9 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 10 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 11 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 12 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 13 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 14 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 15 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 16 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 17 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 18 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 19 illustrates a cleaning device 10 according to an embodiment of the present application; Figure 20 illustrates a cleaning device 10 according to an embodiment of the present application.

[0051] When numerical ranges are given, this is understood to include every number falling within the range. Also, unless otherwise indicated, all technical and scientific terms used herein are to be accorded their art-recognized meanings. Any method, device, material, or substance similar or equivalent to those described herein can be used in the practice of the present application. It is intended that the definition of the application be determined by the claims.

[0052] It is to be understood that the terminology used herein is for the purpose of describing the particular embodiments only and is not intended to be limiting, unless the contrary is indicated. Any use of terms "including", "containing", etc. will be understood in the context of this specification to mean "comprising" or "including, but not limited to".

[0053] Referring to Figures 1 to 20, the present application provides a control method and a cleaning device 10, the control method can associate the dirt level of the surface to be cleaned with the operating length of the adjustable connecting portion 101, by controlling the operating length of the adjustable connecting portion 101, the installation height between the cloth disc assembly 13 and the body 11 is adjusted, so as to adjust the cleaning pressure of the cloth disc assembly 13, so as to adjust the cleaning pressure of the cleaning device 10 during operation according to the dirt level, and ensure the cleaning effect of the surface to be cleaned with different dirt levels.

[0054] Referring to Figures 3 to 5, the control method provided by the present application is applied to the cleaning device 10, the cleaning device 10 includes the body 11, the cloth disc assembly 13, the driving assembly 12 and the adjustable connecting portion 101.

[0055] The machine body 11 is configured to be able to walk on the surface to be cleaned. The inside of the machine body 11 has a containing space for containing various parts of the cleaning device 10. The shape of the machine body 11 can be any shape, such as a cylindrical shape, an elliptical shape, or a D-shaped, etc. The cleaning device 10 also includes a conventional driving wheel mechanism provided on the existing cleaning device 10, which is arranged below the machine body 11 to drive the machine body 11 to walk on the surface to be cleaned. The specific structure of the driving wheel mechanism and the connection structure between the driving wheel mechanism and the machine body 11 can be described with reference to the related structure in the existing cleaning device 10, which will not be described here.

[0056] The driving assembly 12 is installed on the machine body 11 and has a rotatable driving end 121. The driving assembly 12 can be installed inside the machine body 11 or outside the machine body 11. The driving assembly 12 can be a motor with speed regulation function, or a combination of a motor and a reduction box, etc. Alternatively, in the embodiment, the driving assembly 12 includes a driving motor and a reduction box, the driving motor is in transmission connection with the reduction box, and the driving end 121 of the driving assembly 12 is the output end of the reduction box. The driving end 121 has a first rotation speed N1 and a second rotation speed N2, and the first rotation speed N1 is less than the second rotation speed N2. It should be noted that the driving end 121 can also have other rotation speeds in addition to the first rotation speed N1 and the second rotation speed N2, which are set according to the use requirements of the driving assembly 12. The specific rotation speed values of the first rotation speed N1 and the second rotation speed N2 can be determined according to the cleaning efficiency of the cleaning device 10 and the dirt level of the surface to be cleaned, etc.

[0057] The cloth disc assembly 13 includes a cloth 133 and a cloth mounting bracket 132, the cloth mounting bracket 132 is arranged at the lower part of the machine body 11, and the cloth 133 is arranged on the side of the cloth mounting bracket 132 facing the ground. The cloth 133 and the cloth mounting bracket 132 can be detachably connected or fixedly connected. The material of the cloth 133 can be sponge, rubber, silicone, etc. Any material that can generate a certain compression amount when the contact pressure between the cloth disc assembly 13 and the ground changes. The cloth mounting bracket 132 is connected with the driving end 121 of the driving assembly 12 through an adjustable connecting part 101, so as to realize the rotation of the cloth disc assembly 13 relative to the machine body 11 under the drive of the driving assembly 12. In the height direction of the cleaning device 10, the installation length of the adjustable connecting part 101 relative to the machine body 11 is adjustable, and the adjustable mode can be realized by a screw structure, or realized by a telescopic structure, etc. In the embodiment, the adjustable connecting part 101 has at least two lengths L1 and L2, and the length of the adjustable connecting part 101 can be converted between L1 and L2.

[0058] Referring to FIG. 1, the control method provided by the present application includes the following steps:

[0059] S1: detecting the dirt degree of the surface to be cleaned.

[0060] The detection method of the dirt degree of the surface to be cleaned can be various. In an embodiment, the dirt degree of the surface to be cleaned can be determined by detecting the dirt degree of the dirty water of the cleaning cloth 133. In another embodiment, the dirt degree of the surface to be cleaned can be determined by directly photographing and identifying the surface to be cleaned by the image acquisition unit during the cleaning operation of the cloth 133. As long as the accuracy requirement of the detection of the dirt degree of the surface to be cleaned is met, the embodiment is not limited in detail.

[0061] S2: adjusting the output rotating speed of the driving assembly 12 according to the dirt degree. When the output rotating speed is N1, the length of the adjustable connecting part 101 driven by the output rotating speed of the driving assembly 12 is L1, that is, when the output rotating speed of the driving end 121 is N1, the corresponding length of the adjustable connecting part 101 is L1. When the output rotating speed is N2, the length of the adjustable connecting part 101 driven by the output rotating speed of the driving assembly 12 is L2, that is, when the output rotating speed of the driving end 121 is N2, the corresponding length of the adjustable connecting part 101 is L2; wherein N2 is greater than N1, and L2 is greater than L1. That is, when the rotating speed output by the driving end 121 is larger, the corresponding length of the adjustable connecting part 101 is also longer.

[0062] By adopting the control method of the embodiment, the dirt degree of the surface to be cleaned can be associated with the running length of the adjustable connecting part 101 during the cleaning operation of the cleaning device 10. Since the adjustable connecting part 101 connects the cloth mounting rack 132 and the machine body 11, the adjustment of the installation height of the cloth disc assembly 13 relative to the machine body 11 can be realized by controlling the running length of the adjustable connecting part 101, so as to realize the adjustment of the contact pressure between the cloth disc assembly 13 and the surface to be cleaned, and improve the problem of single cleaning pressure of the cloth disc assembly 13, so as to better adapt to different dirt degrees of the cleaning operation working condition, and take into account the cleaning effect of different working conditions. At the same time, since N2 is greater than N1, and L2 is greater than L1, the linkage control between the operation speed and the operation pressure of the cloth disc assembly 13 can be realized, which is conducive to the optimization of the control logic of the cleaning device 10 during operation, so as to select smaller contact pressure and lower operation speed to clean the surface to be cleaned when the dirt degree of the surface to be cleaned is lighter, save the output power of the driving assembly 12, and achieve the effect of energy saving; when the surface to be cleaned encounters stubborn stains, larger contact pressure and higher operation speed are selected to clean the surface to be cleaned, so as to improve the cleaning effect of the cloth disc assembly 13 on the stubborn stains, and therefore, the user experience of the cleaning device 10 can be improved.

[0063] In an example of the control method, the driving end 121 further has a third rotating speed N3, and the output rotating speed of the driving assembly 12 is adjusted according to the dirt degree in step S2, and the control method further comprises: when the output rotating speed of the driving end 121 is N3, the output rotating speed of the driving assembly 12 drives the length of the adjustable connecting part 101 to be L3, that is, when the output rotating speed of the driving end 121 is N3, the length of the corresponding adjustable connecting part 101 is L3; wherein N3 is greater than N2, and L3 is greater than L2. That is, when the output rotating speed of the driving end 121 increases from N2 to N3, the length of the corresponding adjustable connecting part 101 also increases from L2 to L3. In this way, the adjustable connecting part 101 can obtain more length changes, and the number of types of output rotating speeds of the driving end 121 can also be enriched, so as to meet the requirements of the cleaning device 10 on more cleaning pressure levels and operation speed levels of the surface to be cleaned.

[0064] In an example of the control method, in order to improve the cleaning effect of the cleaning device 10 on the surface to be cleaned, the cleaning device 10 further comprises a water supplementing device (not shown in the figure), which is used to supplement water to the cleaning cloth disc assembly 13 during the cleaning operation. The specific structure of the water supplementing device can refer to the structure of the water supplementing device on the existing cleaning device 10, which will not be described here. The control method further comprises: adjusting the water supplementing amount of the water supplementing device to the cleaning cloth disc assembly 13 according to the output rotating speed, and when the output rotating speed is N1, the water supplementing amount of the cleaning cloth disc assembly 13 is Q1, and when the output rotating speed is N2, the water supplementing amount of the cleaning cloth disc assembly 13 is Q2, wherein Q1 is greater than Q2. Since the length of the adjustable connecting part 101 is L1 when the output rotating speed is N1, and the length of the adjustable connecting part 101 is L2 when the output rotating speed is N2, and L2 is greater than L1, therefore, the contact pressure between the corresponding cleaning cloth disc assembly 13 and the surface to be cleaned is relatively small when the output rotating speed is N1, and the contact pressure between the corresponding cleaning cloth disc assembly 13 and the surface to be cleaned is relatively large when the output rotating speed is N2. Since the greater the contact pressure between the cleaning cloth disc assembly 13 and the surface to be cleaned, the more water is squeezed out of the cleaning cloth disc assembly 13 during the operation, which is easy to cause ground water, and affects the user experience, therefore, in this embodiment, by controlling the water supplementing amount of the cleaning cloth disc assembly 13 under different output rotating speeds, the water supplementing demand of the cleaning cloth disc assembly 13 under different operation pressure levels can be better met, so as to better balance the cleaning effect and the user experience.

[0065] In an example of the control method, the control method further comprises: adjusting the amount of water supplied to the cleaning pad assembly 13 by the water supply device according to the output rotational speed, and when the output rotational speed is N3, the amount of water supplied to the cleaning pad assembly 13 is Q3, wherein Q2 is greater than Q3. Since the length of the adjustable connecting portion 101 is L3 when the output rotational speed is N2, and the length of the adjustable connecting portion 101 is L3 when the output rotational speed is N3, and N3 is greater than N2, and L3 is greater than L2, therefore, the contact pressure between the corresponding cleaning pad assembly 13 and the surface to be cleaned is relatively small when the output rotational speed is N2, and the contact pressure between the corresponding cleaning pad assembly 13 and the surface to be cleaned is relatively large when the output rotational speed is N3. Thus, the amount of water supplied to the cleaning pad assembly 13 can be correspondingly reduced when the output rotational speed increases from N2 to N3, so that the amount of water supplied decreases from Q2 to Q3. In this way, when the cleaning pressure between the cleaning pad assembly 13 and the surface to be cleaned is further increased, the amount of water supplied to the cleaning pad assembly 13 can be further reduced, so as to better adapt to the water supply requirements under different cleaning operation pressure levels.

[0066] Referring to FIG. 2, in an example of the control method, the output rotational speed of the driving assembly 12 is adjusted according to the dirt level, and the control method further comprises the following steps S21 to S22:

[0067] S21: Obtain the target rotational speed and the current rotational speed of the driving assembly 12. In this step, the target rotational speed of the driving assembly 12 can be obtained according to the test data of the cleaning device 10 cleaning surfaces with different dirt levels, or can be obtained according to the experience data of previous cleaning device operation. The specific values of the target rotational speed corresponding to different dirt levels need to be determined by the designer according to the actual operation requirements. The current rotational speed of the driving assembly 12 can be obtained in various ways, for example, it can be obtained by a speed sensor provided on the machine body 11, or it can be obtained by reading the running parameters of the driving assembly 12, etc.

[0068] S22: driving the adjustable connecting part 101 to transform between the length L1 and the length L2 through the speed difference between the target speed and the current speed of the driving assembly 12. When the current speed of the driving assembly 12 is not equal to the target speed, the current speed of the driving assembly 12 will change accordingly, for example, when the current speed is less than the target speed, the current speed will increase accordingly until it is equal to the target speed; when the current speed is greater than the target speed, the current speed will decrease accordingly until it is equal to the target speed. In this step, during the process of increasing or decreasing the current speed, the adjustable connecting part 101 will be affected by the speed difference generated by the driving assembly 12, thereby realizing the transformation of the adjustable connecting part 101 between the length L1 and the length L2. In this way, the length adjustment of the adjustable connecting part 101 can be realized without additional adjustment structure, so that the length adjustment of the adjustable connecting part 101 is more convenient, and the structure is simpler. At the same time, it can better meet the corresponding relationship between the output speed and the length change of the adjustable connecting part 101.

[0069] Please refer to FIGS. 4-6, the present application also provides a cleaning device 10 which uses the above-mentioned control method to perform cleaning operation. The adjustable connecting part 101 in the cleaning device 10 includes the connecting assembly 14 and the pressure adjusting assembly 15. The connecting assembly 14 includes the elastic member 141 and the first connecting member 142. The first connecting member 142 is arranged on the side of the cloth mounting rack 132 away from the ground. The first connecting member 142 can be directly connected with the cloth mounting rack 132, or indirectly connected through other parts. The connection between the first connecting member 142 and the cloth mounting rack 132 can be any detachable connection mode such as plug-in connection, clamping connection or threaded connection. The side of the first connecting member 142 away from the cloth mounting rack 132 is connected with the driving end 121 of the driving assembly 12, and the connection between the first connecting member 142 and the driving end 121 can be plug-in connection, or bolted connection and other modes that can realize the fixed connection between the first connecting member 142 and the driving end 121.

[0070] Please refer to FIG. 6, one end of the elastic member 141 is connected with the first connecting member 142, and the other end is connected with the cloth mounting rack 132. The connection between the elastic member 141 and the first connecting member 142 and the cloth mounting rack 132 means that the state change of the elastic member 141 is associated with the position change between the first connecting member 142 and the cloth mounting rack 132. The connection between the elastic member 141 and the first connecting member 142 and the cloth mounting rack 132 can have multiple options, for example, when the first connecting member 142 and the cloth mounting rack 132 are close to each other in the height direction, the elastic member 141 is compressed to be in a compressed state, and when the first connecting member 142 and the cloth mounting rack 132 are away from each other in the height direction, the elastic member 141 is reset to return to an extended state; it can also be that when the first connecting member 142 and the cloth mounting rack 132 are close to each other in the height direction, the elastic member 141 is in a stretched and retracted state, and when the first connecting member 142 and the cloth mounting rack 132 are away from each other in the height direction, the elastic member 141 is in a retracted state, etc.

[0071] Please refer to FIG. 5 and FIG. 6, the pressure adjusting assembly 15 is arranged between the first connecting member 142 and the cloth disc assembly 13, the pressure adjusting assembly 15 includes a lifting surface 151 and an abutting portion 152, the lifting surface 151 is arranged on the side of the cloth mounting rack 132 facing the first connecting member 142, the lifting surface 151 can be integrally formed with the cloth mounting rack 132, or can be fixedly connected with the first connecting member 142 by bolts or clamping, etc. The abutting portion 152 is arranged on the side of the first connecting member 142 facing the cloth mounting rack 132, and the abutting portion 152 can be integrally formed with the first connecting member 142, or can be fixedly connected with the first connecting member 142 by bolts or clamping, etc. Preferably, please refer to FIG. 7 to FIG. 9, in the embodiment, the lifting surface 151 is integrally injection molded with the cloth mounting rack 132, and the abutting portion 152 is integrally injection molded with the first connecting member 142. In this way, the installation of the pressure adjusting assembly 15 can be facilitated, the assembly process of the cleaning equipment 10 can be simplified, and the assembly efficiency can be improved.

[0072] It should be noted that in some other embodiments, the lifting surface 151 can be arranged on the side of the first connecting member 142 facing the cloth mounting rack 132, and the abutting portion 152 can be arranged on the side of the cloth mounting rack 132 facing the first connecting member 142.

[0073] Please refer to FIG. 5 and FIG. 6, the lifting surface 151 is matched with the abutting portion 152 corresponding, which is specifically that the abutting portion 152 is corresponding in position and shape with the lifting surface 151, so as to be always pressed against each other, and the abutting portion 152 can slide along the lifting direction of the lifting surface 151 when the first connecting piece 142 rotates relative to the cleaning cloth mounting frame 132. The lifting direction of the lifting surface 151 is the height direction of the cleaning device 10, and the abutting portion 152 slides along the lifting direction of the lifting surface 151, which can drive the cleaning cloth disc assembly 13 connected with the abutting portion 152 to run up and down, that is, to realize the height adjustment between the cleaning cloth 133 and the surface to be cleaned, so as to realize the contact pressure adjustment between the cleaning cloth 133 and the surface to be cleaned.

[0074] The specific abutting mode between the lifting surface 151 and the abutting portion 152 is not limited, in an embodiment, the lifting surface 151 and the abutting portion 152 can be both slope surface structures, and when the first connecting piece 142 rotates relative to the cleaning cloth mounting frame 132, the sliding between the two slope surfaces is generated to realize the sliding of the abutting portion 152 along the lifting surface 151. In another embodiment, the lifting surface 151 can be a slope surface structure, and the abutting portion 152 can be a spherical convex portion, and when the first connecting piece 142 rotates relative to the cleaning cloth mounting frame 132, the spherical convex portion slides along the slope surface to realize the lifting operation of the abutting portion 152 along the lifting surface 151. In the actual design and production process, the abutting mode between the lifting surface 151 and the abutting portion 152 can be specifically selected according to actual needs.

[0075] When the driving end 121 rotates at the first rotating speed N1, the abutting portion 152 is pressed against the first position of the lifting surface 151 (as shown in position I in FIG. 8), and as shown in FIG. 18, at the first position, the cleaning cloth disc assembly 13 is in contact with the surface to be cleaned at the first pressure; when the driving end 121 is increased from the first rotating speed N1 to the second rotating speed N2, the rotating speed difference drives the abutting portion 152 to slide to the second position of the lifting surface 151 (as shown in position II in FIG. 8), as shown in FIG. 6, at the second position, the axial distance between the cleaning cloth disc assembly 13 and the connecting assembly 14 is increased, and the cleaning cloth disc assembly 13 is in contact with the surface to be cleaned at the second pressure, which is greater than the first pressure.

[0076] It needs to be explained that when the driving end 121 rotates at the first rotational speed N1, the abutting portion 152 and the lifting surface 151 will have a relative rotation trend, and at this time, under the elastic force of the elastic member 141, the abutting portion 152 and the lifting surface 151 will have a first abutting force, and the abutting portion 152 and the lifting surface 151 will have a first friction force under the action of the first abutting force. At this time, the driving force output by the driving end 121 is less than or equal to the first friction force, so that the abutting portion 152 can be kept relatively stationary at the first position of the lifting surface 151, thereby realizing the synchronous rotation of the abutting portion 152 and the lifting surface 151 at the first rotational speed N1, and finally realizing the contact between the cloth 133 and the surface to be cleaned at the first pressure, and performing the cleaning work.

[0077] When the driving end 121 is raised from the first rotational speed N1 to the second rotational speed N2, under the action of inertia, the lifting surface 151 and the abutting portion 152 will have a speed difference, thereby breaking the balance state of the abutting portion 152 and the lifting surface 151 at the first position. Under the action of the speed difference, the lifting surface 151 and the abutting portion 152 rotate relative to each other, realizing the sliding of the abutting portion 152 from the first position to the second position. During the sliding of the abutting portion 152 relative to the lifting surface 151, under the action of the elastic member 141, the friction force between the abutting portion 152 and the lifting surface 151 gradually increases, the abutting portion 152 gradually slows down relative to the lifting surface 151, and finally stops at the second position of the lifting surface 151. At this time, the relative speed between the abutting portion 152 and the lifting surface 151 is zero, and they rotate synchronously at the second rotational speed N2, and finally realize the contact between the cloth 133 and the surface to be cleaned at the second pressure, and perform the cleaning work.

[0078] It can be understood that in other embodiments, the above-mentioned speed difference can also be generated by the change of the contact friction force between the cloth 133 and the surface to be cleaned. For example, when the friction force between the cloth 133 and the surface to be cleaned is greater than the friction force between the lifting surface 151 and the abutting portion 152, the above-mentioned speed difference will also be generated between the lifting surface 151 and the abutting portion 152. In other embodiments, the above-mentioned speed difference can also be generated when the contact friction force between the cloth 133 and the surface to be cleaned changes while the rotational inertia is generated between the lifting surface 151 and the abutting portion 152.

[0079] The cleaning device 10 of the embodiment is provided with a pressure adjusting assembly 15. When the driving end 121 of the driving assembly 12 rotates at the first rotating speed N1, the abutting part 152 can abut against the first position of the lifting surface 151, and the cloth disc assembly 13 is in contact with the surface to be cleaned at the first pressure. When the driving end 121 is raised from the first rotating speed N1 to the second rotating speed N2, the rotating speed difference can drive the abutting part 152 to slide to the second position of the lifting surface 151, and the cloth disc assembly 13 is in contact with the surface to be cleaned at the second pressure, which is greater than the first pressure. In this way, by controlling the rotating speed of the driving end 121, the contact pressure between the cloth disc assembly 13 and the surface to be cleaned can be automatically adjusted, and the linkage between the working speed and the working pressure of the cloth disc assembly 13 during the cleaning operation can be realized. Therefore, when the surface to be cleaned is lightly soiled, a smaller contact pressure and a lower working speed can be selected to clean the surface to be cleaned, thereby saving the output power of the driving assembly 12 and achieving the effect of energy saving. When the surface to be cleaned encounters stubborn stains, a larger contact pressure and a higher working speed can be selected to clean the surface to be cleaned, thereby improving the cleaning effect of the cloth disc assembly 13 on the stubborn stains.

[0080] Considering the more cleaning pressure requirements of the cleaning device 10 on the surface to be cleaned, in an example of the cleaning device 10 of the present application, the driving end 121 also has a third rotating speed N3, which is greater than the second rotating speed N2. When the driving end 121 is raised to the third rotating speed N3, the rotating speed difference drives the abutting part 152 to slide to the third position of the lifting surface 151 (as shown in position III in FIG. 8), and at the third position, the cloth disc assembly 13 is in contact with the surface to be cleaned at the third pressure, which is greater than the second pressure. Similar to the working principle of the sliding of the first position to the second position in the previous embodiment, the specific action process of the sliding of the abutting part 152 from the second position to the third position is described above with reference to the related description of the sliding of the first position to the second position, and will not be repeated here.

[0081] Since the third pressure is greater than the second pressure, in this way, the contact pressure range between the cloth 133 and the surface to be cleaned in the cleaning device 10 can be enriched, so that when the surface to be cleaned is attached with stubborn dirt, the cloth 133 can be in contact with the surface to be cleaned at a greater third pressure for cleaning, thereby further improving the cleaning effect of the cloth disc assembly 13 on the stubborn stains. At the same time, since the third rotating speed N3 is greater than the second rotating speed N2, when cleaning the stubborn dirt, the driving assembly 12 can also provide a higher rotating speed, so as to increase the cleaning speed between the cloth disc assembly 13 and the stubborn stains while increasing the cleaning pressure, thereby further improving the cleaning effect of the cloth disc assembly 13 on the stubborn stains attached to the surface to be cleaned.

[0082] It should be noted that the first speed, the second speed, the third speed, the first position, the second position and the third position can be obtained by force analysis or simulation experiment, or can be obtained by physical experiment. The specific values are not limited and can be adjusted according to the cleaning needs. The second pressure is only greater than the first pressure, and the third pressure is only greater than the second pressure. The specific pressure values can be unlimited, and can be determined by the axial height difference between the first position, the second position and the third position and the compression amount of the cloth 133.

[0083] Please refer to FIGS. 7-9. In an example of the cleaning device 10 of the present application, the cloth mounting frame 132 is provided with a boss 154 on the side surface facing the first connecting piece 142, and the lifting surface 151 is located on the top of the boss 154. The boss 154 can be integrally connected with the cloth mounting frame 132, or can be fixedly connected by bolts, etc. Alternatively, in the present embodiment, the boss 154 is provided on the end surface of the cloth mounting frame 132 facing the first connecting piece 142, and the boss 154 is integrally connected with the cloth mounting frame 132. By providing the boss 154, the lifting surface 151 is located on the top of the boss 154, which facilitates the molding processing of the lifting surface 151 on the cloth mounting frame 132. The abutting portion 152 is correspondingly provided on the side surface of the first connecting piece 142 facing the cloth mounting frame 132, and the two sides of the abutting portion 152 are provided with limiting bodies 155 limiting the boss 154. The abutting portion 152 can correspond to the lifting surface 151 one by one, or one lifting surface 151 can correspond to multiple abutting portions 152, as long as there is always a corresponding abutting portion 152 abutting with the lifting surface 151 during the rotation of the lifting surface 151. The abutting portion 152 can be a slope, a circular arc surface, a concave-convex surface, etc. Any structure that can realize abutting contact between the abutting portion 152 and the lifting surface 151. The abutting portion 152 can be integrally connected with the first connecting piece 142, or can be connected to the first connecting piece 142 by bolts or clamping, etc. The limiting bodies 155 on both sides can stop the boss 154 during the cooperation and abutment of the abutting portion 152 and the lifting surface 151, so as to limit and guide the movement between the abutting portion 152 and the boss 154 when the abutting portion 152 slides along the lifting surface 151, reduce the probability of the abutting portion 152 deviating from the lifting surface 151, and ensure that the abutting portion 152 can slide smoothly along the lifting surface 151.

[0084] In other embodiments, the boss 154 can be arranged on the first connecting member 142, and the abutting portion 152 is arranged on the cloth mounting rack 132 and abuts against the lifting surface 151. The abutting portion 152 can also be provided with a limiting body 155 on both sides to limit the boss 154. The specific structure of the abutting portion 152 and the boss 154 can refer to the related description in the previous embodiment, which will not be repeated here.

[0085] Please refer to FIG. 10 and FIG. 11, in an example of the cleaning device 10 of the present application, the first connecting member 142 is provided with a groove 153 on the side facing the cloth mounting rack 132, and the lifting surface 151 is located at the bottom of the groove 153. The groove 153 can be an integral ring groove structure arranged circumferentially around the first connecting member 142, or can be a plurality of local groove structures arranged circumferentially on the first connecting member 142. The abutting portion 152 is arranged on the side of the cloth mounting rack 132 facing the first connecting member 142, and the abutting portion 152 is arranged corresponding to the groove 153. The size of the abutting portion 152 matches the size of the groove 153, so that the abutting portion 152 can extend into the groove 153 and press against the lifting surface 151. By arranging the groove 153, the lifting surface 151 is located at the bottom of the groove 153, so that when the abutting portion 152 slides along the lifting surface 151, the abutting portion 152 needs to extend into the groove 153, and the side wall of the groove 153 can limit and guide the abutting portion 152, so that the abutting portion 152 can slide along the lifting surface 151 more smoothly, thereby improving the accuracy of adjusting the contact pressure between the cloth 133 and the surface to be cleaned.

[0086] In some other embodiments, the cloth mounting rack 132 can be provided with a groove 153 on the side facing the first connecting member 142, and the lifting surface 151 is located at the bottom of the groove 153. The first connecting member 142 is provided with an abutting portion 152, which corresponds to the groove 153 and extends into the groove 153 to press against the lifting surface 151. Such arrangement can also achieve the beneficial effects of the previous embodiment.

[0087] Please refer to FIG. 7 and FIG. 8, in an example of the cleaning device 10 of the present application, the abutting portion 152 includes an abutting surface 1521 matching the shape of the lifting surface 151, and the abutting surface 1521 abuts against the lifting surface 151. The abutting surface 1521 can slide relative to the lifting surface 151 when there is a speed difference between the abutting portion 152 and the lifting surface 151. By arranging the abutting surface 1521 on the abutting portion 152, the surface contact between the abutting surface 1521 and the lifting surface 151 can be achieved, so that a relatively stable contact pressure can be obtained between the abutting surface 1521 and the lifting surface 151, thereby improving the stability of the contact between the abutting surface 1521 and the lifting surface 151, and improving the stability of the contact pressure between the cloth 133 and the surface to be cleaned.

[0088] Please refer to FIG. 8 and FIG. 9, in an example of the cleaning device 10 of the present application, the lifting surface 151 is a spiral surface arranged around the rotation axis of the cloth mounting rack 132. The number of turns of the spiral surface is not limited, and can be half a turn, one turn or more turns, and the specific number of turns is subject to the lifting stroke of the abutting portion 152 on the lifting surface 151. By arranging the lifting surface 151 as a spiral surface, the continuous sliding of the abutting portion 152 on the lifting surface 151 during rotation can be achieved, which facilitates the height adjustment between the abutting portion 152 and the lifting surface 151. At the same time, the spiral surface also helps to reduce the vibration between the abutting portion 152 and the lifting surface 151 during rotation, which can more favorably improve the stability of the abutment between the abutting portion 152 and the lifting surface 151.

[0089] Please refer to FIG. 10 and FIG. 11, in an example of the cleaning device 10 of the present application, the lifting surface 151 is provided in plurality, and the plurality of lifting surfaces 151 are all spiral surfaces and are arranged in an array along the circumference of the first connecting member 142. The plurality of arrayed lifting surfaces 151 can be arranged in a head-to-tail connection along the circumferential direction of the first connecting member 142, or can be arranged at intervals. The specific number of lifting surfaces 151 can be two or more. The abutting portion 152 is also provided in plurality, and the specific number of abutting portions 152 is not limited, provided that each lifting surface 151 corresponds to at least one abutting portion 152, one lifting surface 151 can correspond to one abutting portion 152, or can correspond to multiple abutting portions 152, etc. Each abutting portion 152 is respectively inserted into a groove 153, and is in abutting pressure with the lifting surface 151 in the groove 153. By arranging multiple lifting surfaces 151 and arranging the plurality of lifting surfaces 151 in an array along the circumference of the first connecting member 142, the plurality of lifting surfaces 151 can provide multiple abutting pressure contact points for the abutting portion 152 along the circumferential direction, thereby increasing the stability of the abutting pressure contact between the abutting portion 152 and the lifting surface 151, and reducing the probability of relative movement between the abutting portion 152 and the lifting surface 151 caused by external disturbance.

[0090] Please refer to FIG. 8 and FIG. 9, in an example of the cleaning device 10 of the present application, the cloth mounting rack 132 is provided with three bosses 154 on the side surface facing the first connecting member 142, the three bosses 154 are arranged in an array along the circumference of the cloth mounting rack 132, the top of each boss 154 forms a lifting surface 151, and the three bosses 154 correspond to three lifting surfaces 151. The first connecting member 142 is provided with three grooves 153 on the side surface facing the cloth mounting rack 132, the three grooves 153 are arranged in an array along the circumference of the first connecting member 142, the bottom wall of each groove 153 forms an abutting surface 1521, and each abutting surface 1521 corresponds to a lifting surface 151. Each abutting surface 1521 is inserted into a groove 153, and is in abutting pressure with the lifting surface 151 in the groove 153.

[0091] Referring to FIG. 6 and FIG. 10, in an example of the cleaning device 10 of the present application, the first connecting member 142 is provided with a receiving cavity 1421, which can have various shapes, such as a cylindrical shape, a polygonal shape, or a cuboid shape. The receiving cavity 1421 extends along the height direction of the cleaning device 10, and an opening is provided on the side of the receiving cavity 1421 away from the cloth mounting rack 132. The cloth tray assembly 13 further includes a second connecting member 131. The second connecting member 131 is slidingly installed on the first connecting member 142, and slides up and down along the extension direction of the receiving cavity 1421. One end of the second connecting member 131 is located within the receiving cavity 1421, and the other end of the second connecting member 131 extends downward through the bottom wall of the receiving cavity 1421 to the cloth mounting rack 132, and is fixedly connected with the cloth mounting rack 132. The second connecting member 131 and the cloth mounting rack 132 can be fixedly connected by threading, or can be integrally injection molded and fixedly connected, etc. In this embodiment, the side of the second connecting member 131 facing the cloth mounting rack 132 is provided with a circular boss, which extends into the interior of the cloth mounting rack 132 and is integrally injection molded and connected with the cloth mounting rack 132.

[0092] Please refer to FIG. 6 and FIG. 18, the elastic member 141 is arranged in the accommodating cavity 1421, one end of the elastic member 141 is connected with the second connecting member 131, and the other end of the elastic member 141 is connected with the wall of the accommodating cavity 1421. When the abutting part 152 slides from the first position to the second position, the elastic member 141 deforms to gradually increase the pressing force between the abutting part 152 and the lifting surface 151. The deformation of the elastic member 141 can be elongation deformation or compression deformation, and the elastic member 141 can be a compression spring, a tension spring, a spring piece, or a hydraulic support, etc. any elastic structure that can deform elastically when the abutting part 152 slides from the first position to the second position, so as to gradually increase the pressing force between the abutting part 152 and the lifting surface 151. When the abutting part 152 slides from the first position to the second position, the abutting part 152 drives the cloth mounting frame 132 to move towards the side close to the surface to be cleaned, at this time, the second connecting member 131 slides downward relative to the accommodating cavity 1421, and the downward sliding of the second connecting member 131 drives the elastic member 141 to connect, so that the elastic member 141 gradually compresses or gradually elongates, so as to gradually increase the elastic force of the elastic member 141, and the elastic force of the elastic member 141 is transmitted to the cloth mounting frame 132 through the second connecting member 131, and then the pressing force between the abutting part 152 on the cloth mounting frame 132 and the lifting surface 151 is gradually increased. By arranging the accommodating cavity 1421 and the second connecting member 131, the second connecting member 131 slides up and down in the accommodating cavity 1421, which can effectively reduce the height installation space occupied when the second connecting member 131 slides up and down, so that the installation between the cloth mounting frame 132 and the first connecting member 142 is more compact, which is beneficial to reduce the overall size of the cleaning equipment 10 in the height direction. At the same time, since the elastic member 141 is connected with the second connecting member 131 and the wall of the accommodating cavity 1421, the arrangement can realize the elastic deformation of the elastic member 141 by the up and down sliding of the second connecting member 131 in the accommodating cavity 1421, and then adjust the pressing force between the abutting part 152 and the lifting surface 151, so it is not necessary to additionally arrange a compression or stretching structure for the deformation of the elastic member 141, thereby the number of parts can be simplified.

[0093] Please refer to Fig. 12, in the example of the cleaning device 10 of the present application, the second connecting member 131 comprises a columnar portion 1311 and a limiting portion 1312, one end of the columnar portion 1311 extends into the accommodating cavity 1421 and is connected with the limiting portion 1312 accommodated in the accommodating cavity 1421, the connecting manner can be any fixed connecting manner such as integrally formed connection, threaded fixed connection, etc. The other end of the columnar portion 1311 penetrates the bottom wall of the accommodating cavity 1421 and is connected with the cloth mounting rack 132, and the columnar portion 1311 can slide up and down relative to the accommodating cavity 1421. The connecting manner of the columnar portion 1311 and the cloth mounting rack 132 can be integrally injection molded connection, bolt fixed connection, etc. The limiting portion 1312 extends at least partially to the outer periphery of the columnar portion 1311. The limiting portion 1312 can be a boss structure arranged around the outer periphery of the columnar portion 1311, or a plurality of stop blocks arranged at intervals on the outer periphery of the columnar portion 1311, etc. In the embodiment, the limiting portion 1312 is a boss, the outer edge of the boss extends to the outer periphery of the columnar portion 1311, and the boss is coaxially arranged with the columnar portion 1311.

[0094] The elastic member 141 is arranged around the columnar portion 1311 in the circumferential direction and is arranged between the limiting portion 1312 and the bottom wall of the accommodating cavity 1421, the bottom wall of the accommodating cavity 1421 has an annular support portion extending to the center thereof, and the elastic member 141 is arranged between the limiting portion 1312 and the annular support portion. In the embodiment, please refer to Fig. 12, one elastic member 141 is arranged, the elastic member 141 is sleeved on the outer periphery of the columnar portion 1311, thereby being arranged around the columnar portion 1311 in the circumferential direction, and the two ends of the elastic member 141 abut against the limiting portion 1312 and the bottom wall of the accommodating cavity 1421, respectively. In other embodiments, the elastic member 141 can also be arranged in plurality, the plurality of elastic members 141 are arranged at intervals around the outer periphery of the columnar portion 1311 to form an arrangement around the columnar portion 1311 in the circumferential direction, and the two ends of the plurality of elastic members 141 abut against the limiting portion 1312 and the bottom wall of the accommodating cavity 1421, respectively. The specific arrangement manner of the elastic member 141 between the second connecting member 131 and the accommodating cavity 1421 can be selected by the worker according to the actual situation.

[0095] Please refer to Figure 6, in an example of the cleaning device 10 of the present application, the second connecting member 131 comprises a columnar portion 1311, a limiting portion 1312 and a sleeve portion 1313, one end of the sleeve portion 1313 penetrates through the bottom wall of the accommodating cavity 1421 and is connected with the cleaning cloth mounting rack 132, the other end of the sleeve portion 1313 extends into the interior of the accommodating cavity 1421, and the sleeve portion 1313 is connected with the bottom wall of the accommodating cavity 1421 in a sliding manner. One end of the columnar portion 1311 extends into the inner hole of the sleeve portion 1313 and is detachably connected with the inner hole of the sleeve portion 1313, and the detachable connection manner can be any detachable connection manner such as threaded fixed connection, groove and block clamping, etc. The other end of the columnar portion 1311 is connected with the limiting portion 1312, and the limiting portion 1312 is located in the interior of the accommodating cavity 1421. The limiting portion 1312 can be integrally formed with the columnar portion 1311 or be fixedly connected with the columnar portion 1311 by bolts, etc. The limiting portion 1312 extends at least partially to the outer periphery of the sleeve portion 1313. The elastic member 141 is sleeved on the outer periphery of the columnar portion 1311, and the two ends of the elastic member 141 abut against the limiting portion 1312 and the bottom wall of the accommodating cavity 1421, respectively. By arranging the sleeve portion 1313 and detachably connecting the columnar portion 1311 with the sleeve portion 1313, the columnar portion 1311 and the limiting portion 1312 can be removed from the sleeve portion 1313 before the first connecting member 142 and the second connecting member 131 are installed, and the columnar portion 1311 and the limiting portion 1312 can be installed on the sleeve portion 1313 after the first connecting member 142 and the second connecting member 131 are installed in place, thereby reducing the interference problem of the limiting portion 1312 in the installation process of the first connecting member 142 and the second connecting member 131 and facilitating the installation between the first connecting member 142 and the second connecting member 131.

[0096] Optionally, please refer to Figure 6, in the present embodiment, the second connecting member 131 is a screw, the screw rod of the screw corresponds to the columnar portion 1311, the screw nut of the screw corresponds to the limiting portion 1312, and the inner hole wall of the sleeve is processed with internal threads matched with the screw, and the screw is connected in the inner hole of the sleeve portion 1313 by threaded tightening, thereby realizing the connection between the sleeve portion 1313, the columnar portion 1311 and the limiting portion 1312. Since the screw is a standard part, the manufacturing cost of the second connecting member 131 can be reduced.

[0097] In the example of the cleaning device 10 of the present application, the elastic member 141 stores energy by compression deformation to provide the pressing force between the abutting portion 152 and the lifting surface 151, and the elastic member 141 is any one of a spring, a spring piece, an elastic ball, a gas pressure support, and a liquid pressure support. In the example, referring to FIGS. 6, 17, and 18, the elastic member 141 is a compression spring, the compression spring is sleeved on the outer periphery of the column portion 1311, and the two ends of the compression spring are respectively in abutment with the limiting portion 1312 and the bottom wall of the accommodating cavity 1421. When the abutting portion 152 is located at the first position of the lifting surface 151, as shown in FIG. 18, at this time, the compression amount of the compression spring is small, and the pressing force provided between the abutting portion 152 and the lifting surface 151 is also small. When the abutting portion 152 slides from the first position to the second position, as shown in FIG. 6, at this time, the compression spring is gradually compressed, the compression amount gradually increases, the stored energy gradually increases, and the pressing force provided between the abutting portion 152 and the lifting surface 151 gradually increases. When the abutting portion 152 returns from the second position to the first position, at this time, the energy stored in the compression spring is gradually released, the compression amount gradually decreases, and the pressing force provided between the abutting portion 152 and the lifting surface 151 gradually decreases. Thus, the compression deformation amount of the elastic member 141 is changed during use to provide different pressing force requirements between the abutting portion 152 and the lifting surface 151.

[0098] Please refer to Fig. 13, in an example of the cleaning device 10 of the present application, the elastic member 141 stores energy by deformation through stretching to provide the pressing force between the abutting part 152 and the lifting surface 151. The elastic member 141 is any one of a spring, a spring piece, a gas pressure support, a hydraulic pressure support. In the present embodiment, the elastic member 141 is a tensile spring. The first connecting member 142 is provided with a receiving cavity 1421, the lower end of the receiving cavity 1421 is an open structure, and the cloth mounting rack 132 is arranged below the lower end opening of the receiving cavity 1421. An upper connecting member 1411 is arranged in the receiving cavity 1421, which can be fixed in the receiving cavity 1421 or rotatably connected in the receiving cavity 1421, and the rotatable connection mode has various choices, for example, it can be rotatably connected through a rotary bearing, or it can be rotatably connected through shaft hole matching. The side of the cloth mounting rack 132 facing the first connecting member 142 is provided with a receiving groove 1321, and a lower connecting member 1412 is arranged in the receiving groove 1321, which can be fixed in the receiving groove 1321 or rotatably connected in the receiving groove 1321, and the rotatable connection mode has various choices, for example, it can be rotatably connected through a rotary bearing, or it can be rotatably connected through shaft hole matching. The elastic member 141 is arranged inside the receiving cavity 1421, and the two ends of the elastic member 141 in the stretching direction are connected with the upper connecting member 1411 and the lower connecting member 1412 respectively, and the connection mode has various choices, for example, it can be connected through hooking, or it can be connected through gluing. In other embodiments, the upper connecting member 1411, the receiving groove 1321 and the lower connecting member 1412 can not be arranged, one end of the elastic member 141 is directly connected to the inner side wall of the receiving cavity 1421, and the other end is directly connected to the cloth mounting rack 132.

[0099] When the elastic member 141 is a tensile spring, when the abutting part 152 is at the first position of the lifting surface 151, the tensile spring is subjected to a smaller stretching amount, and the tensile force generated on the abutting part 152 is also smaller, and the pressing force provided between the abutting part 152 and the lifting surface 151 is also smaller. When the abutting part 152 slides from the first position to the second position, the tensile spring is gradually elongated, the stretching amount gradually increases, the tensile force generated on the abutting part 152 also gradually increases, and the pressing force provided between the abutting part 152 and the lifting surface 151 also gradually increases, and the energy stored in the tensile spring also gradually increases. When the abutting part 152 returns to the first position from the second position again, the energy stored in the tensile spring is gradually released, the stretching amount gradually decreases, and the pressing force provided between the abutting part 152 and the lifting surface 151 also gradually decreases. Such a cycle is repeated to change the stretching deformation amount of the elastic member 141 during use to provide different pressing force requirements between the abutting part 152 and the lifting surface 151.

[0100] Please refer to FIG. 6, in an example of the cleaning device 10 of the present application, the first connecting member 142 is provided with the first connecting part 16 at the end away from the cloth disc assembly 13. The first connecting part 16 can be located outside the accommodating cavity 1421 and directly abut against the end surface of the first connecting member 142 away from the cloth mounting rack 132, thereby covering the opening of the accommodating cavity 1421. The first connecting part 16 can also be matched with the shape of the opening of the accommodating cavity 1421 and directly extend into the interior of the accommodating cavity 1421 to block the opening. The first connecting part 16 is fixedly connected to the first connecting member 142, and the fixed connection can be screw fixed connection or magnetic attraction fixed connection or other detachable connection modes. By providing the first connecting part 16, the probability of external dust and other impurities entering the accommodating cavity 1421 can be reduced, and the working environment in the accommodating cavity 1421 can be kept relatively clean. At the same time, the first connecting part 16 can also play a limiting role when the limiting part 1312 moves upward relative to the accommodating cavity 1421, which is conducive to controlling the upward stroke of the second connecting member 131 in the accommodating cavity 1421.

[0101] Please refer to FIG. 4 and FIG. 6, in an example of the cleaning device 10 of the present application, the driving end 121 is connected with the second connecting part 1211, the first connecting part 16 is a magnet, and the second connecting part 1211 is a ferromagnet. The side of the second connecting part 1211 facing the first connecting part 16 is fitted with the surface of the first connecting part 16 away from the accommodating cavity 1421 to realize the magnetic attraction connection between the first connecting part 16 and the second connecting part 1211, and then the axial fixed connection between the first connecting member 142 and the driving end 121 can be realized. Since the installation process between the first connecting part 16 and the second connecting part 1211 does not require the use of tools, the installation is very convenient. At the same time, when the first connecting part 16 and the second connecting part 1211 need to be disassembled, a pulling force greater than the magnetic attraction force is directly applied to the side of the first connecting part 16, so the disassembly process is also relatively convenient. In other embodiments, the first connecting part 16 can be a ferromagnet, and the second connecting part 1211 can be a magnet. The side of the second connecting part 1211 facing the first connecting part 16 is fitted with the surface of the first connecting part 16 away from the accommodating cavity 1421 to realize the magnetic attraction connection between the first connecting part 16 and the second connecting part 1211, and then the axial fixed connection between the first connecting member 142 and the driving end 121 can be realized.

[0102] In some other embodiments, the first connecting part 16 and the second connecting part 1211 can both be magnets, and the magnetic properties of the first connecting part 16 and the second connecting part 1211 are opposite, and the first connecting part 16 and the second connecting part 1211 are magnetically attracted. In this way, the beneficial effects in the above embodiments can also be achieved.

[0103] Referring to FIGS. 14-18, in an example of the cleaning apparatus 10, the inner wall of the accommodating cavity 1421 is provided with a mounting groove 14211 facing away from the side of the cloth disc assembly 13, and the first connecting component 16 is at least partially accommodated in the mounting groove 14211, and the bottom wall of the mounting groove 14211 is at least partially supported on the lower edge of the first connecting component 16. The mounting groove 14211 can be shaped to match the profile of the first connecting component 16, or can be other shapes capable of accommodating the first connecting component 16. The bottom wall of the mounting groove 14211 can be a whole annular structure, or can be a plurality of local support surface structures arranged around the inner wall of the accommodating cavity 1421, etc., as long as it can be supported on the lower edge of the first connecting component 16 and serve as an axial mounting and positioning for the first connecting component 16. Specifically, in this embodiment, the inner wall of the accommodating cavity 1421 is provided with a plurality of ribs protruding towards the center of the accommodating cavity 1421, and the plurality of ribs are arranged in an array along the center of the accommodating cavity 1421, and the end faces of the plurality of ribs towards the opening side of the accommodating cavity 1421 form support surfaces, and the area between the support surfaces and the opening of the accommodating cavity 1421 forms the mounting groove 14211. When the first connecting component 16 is accommodated in the mounting groove 14211, the support surfaces are supported on the lower edge of the first connecting component 16. By providing the mounting groove 14211, the axial positioning and mounting of the first connecting component 16 in the accommodating cavity 1421 can be achieved, and the height of the mounting space occupied by the first connecting component 16 can be reduced, further improving the compactness of the mounting structure between the cloth disc assembly 13 and the main body 11.

[0104] Referring to FIGS. 14-18, in an example of the cleaning apparatus 10, the inner wall of the accommodating cavity 1421 is provided with a mounting groove 14211 facing away from the side of the cloth disc assembly 13, and the first connecting component 16 is at least partially accommodated in the mounting groove 14211, and the bottom wall of the mounting groove 14211 is at least partially supported on the lower edge of the first connecting component 16. The mounting groove 14211 can be shaped to match the profile of the first connecting component 16, or can be other shapes capable of accommodating the first connecting component 16. The bottom wall of the mounting groove 14211 can be a whole annular structure, or can be a plurality of local support surface structures arranged around the inner wall of the accommodating cavity 1421, etc., as long as it can be supported on the lower edge of the first connecting component 16 and serve as an axial mounting and positioning for the first connecting component 16. Specifically, in this embodiment, the inner wall of the accommodating cavity 1421 is provided with a plurality of ribs protruding towards the center of the accommodating cavity 1421, and the plurality of ribs are arranged in an array along the center of the accommodating cavity 1421, and the end faces of the plurality of ribs towards the opening side of the accommodating cavity 1421 form support surfaces, and the area between the support surfaces and the opening of the accommodating cavity 1421 forms the mounting groove 14211. When the first connecting component 16 is accommodated in the mounting groove 14211, the support surfaces are supported on the lower edge of the first connecting component 16. By providing the mounting groove 14211, the axial positioning and mounting of the first connecting component 16 in the accommodating cavity 1421 can be achieved, and the height of the mounting space occupied by the first connecting component 16 can be reduced, further improving the compactness of the mounting structure between the cloth disc assembly 13 and the main body 11.

[0105] Please refer to FIG. 4, FIG. 14 and FIG. 15, in an example of the cleaning device 10 of the present application, the outer circumferential surface of the first connecting member 142 is a polygonal cylindrical surface structure, such as a quadrangular prism cylindrical surface structure, a hexagonal prism cylindrical surface structure or other prism cylindrical surface structures. The driving end 121 is provided with a polygonal hole structure matching the outer circumferential surface of the first connecting member 142, such as a quadrangular prism hole, a hexagonal prism hole or other polygonal holes. In this way, when the first connecting member 142 is connected with the driving end 121, the first connecting member 142 and the driving end 121 can be positioned in the circumferential direction by inserting the polygonal cylindrical surface into the polygonal hole, and the positioning structure is simple and convenient to implement.

[0106] In an example of the cleaning device 10 of the present application, the driving assembly 12 further comprises a lifting driving mechanism, which can drive the cloth disc assembly 13 to descend to the surface to be cleaned and can drive the cloth disc assembly 13 to lift and move away from the surface to be cleaned. The lifting driving mechanism can be a screw-nut transmission mechanism, a gear and rack transmission mechanism, a pneumatic cylinder, a hydraulic cylinder or any other lifting mechanism that can realize the lifting of the cloth disc assembly 13 relative to the surface to be cleaned. The specific selection of the lifting driving mechanism can be determined by various parameter conditions such as the specific structure and design size of the cleaning device 10, which is not limited in the present embodiment.

[0107] Alternatively, please refer to FIG. 19 and FIG. 20, in an example of the cleaning device 10 of the present application, the lifting driving mechanism comprises a threaded lifting mechanism 170, which drives the cloth disc assembly 13 to descend to and move away from the surface to be cleaned through the action of the threaded lifting mechanism 170. The threaded lifting mechanism 170 can comprise a first shaft sleeve 171 and a second shaft sleeve 172. In the lifting direction of the cloth disc assembly 13, the first shaft sleeve 171 comprises a first end wall 1711 and a first side wall 1712 surrounding the first end wall 1711, the first end wall 1711 is arranged at the upper end of the first side wall 1712 and connected with the output end of the reduction box of the driving assembly 12, the lower end of the first side wall 1712 is open, and the first side wall 1712 and the first end wall 1711 form a first accommodating cavity 1713. The second shaft sleeve 172 comprises a second end wall 1721 and a second side wall 1722 surrounding the second end wall 1721, the second end wall 1721 is arranged at the lower end of the second side wall 1722, the upper end of the second side wall 1722 is open, and the second side wall 1722 and the second end wall 1721 form a second accommodating cavity 1723. In the lifting direction of the cloth disc assembly 13, the lower end of the first side wall 1712 extends into the second accommodating cavity 1723 and moves up and down relative to the second accommodating cavity 1723.

[0108] The outer surface of the first side wall 1712 and the inner surface of the second side wall 1722 have a screw mechanism 173 therebetween, the screw mechanism 173 comprises a thread groove 1731 and a thread rib 1732 which are engaged with each other, the thread groove 1731 is arranged on the outer surface of the first side wall 1712, and the thread rib 1732 is arranged on the inner surface of the second side wall 1722. In other embodiments, the thread groove 1731 can also be arranged on the inner surface of the second side wall 1722, and the thread rib 1732 is correspondingly arranged on the outer surface of the first side wall 1712. The second shaft sleeve 172 is sleeved with a damping sleeve 174, one end of the damping sleeve 174 is connected to the reduction box of the driving assembly 12, and the other end of the damping sleeve 174 has a resilient protrusion 1741 protruding inwardly, the protrusion 1741 abuts against the outer surface of the second side wall 1722, that is, the protrusion 1741 is in interference abutment with the outer surface of the second side wall 1722. In this embodiment, the driving end 121 of the driving assembly 12 is the second shaft sleeve 172.

[0109] The central region of the second end wall 1721 comprises a boss portion 1724 protruding towards the first end wall 1711, the boss portion 1724 extends into the first accommodating cavity 1713 and moves up and down relative to the first accommodating cavity 1713. The side of the boss portion 1724 away from the first end wall 1711 is provided with a third accommodating cavity 1725 with an opening downward, and the second connecting component 1211 is fixedly installed on the top wall of the third accommodating cavity 1725. The end of the first connecting piece 142 away from the cloth disc assembly 13 extends into the third accommodating cavity 1725, and the first connecting component 16 installed on the first connecting piece 142 is magnetically connected with the second connecting component 1211.

[0110] In this way, when the motor of the driving assembly 12 rotates forward, the first shaft sleeve 171 rotates forward, and when the motor of the driving assembly 12 reverses, the first shaft sleeve 171 reverses, by controlling the forward and reverse rotation of the first shaft sleeve 171, and under the action of the protrusion 1741 of the damping sleeve 174, the rotating speed of the second shaft sleeve 172 is hindered, so that the relative rotation between the first shaft sleeve 171 and the second shaft sleeve 172 is formed, and then the second shaft sleeve 172 generates upward or downward movement in the height direction, and the cloth disc assembly 13 is connected to the second shaft sleeve 172, so that the cloth disc assembly 13 follows the second shaft sleeve 172 to generate upward or downward movement in the height direction. When the cloth disc assembly 13 needs to perform cleaning work, the cloth disc assembly 13 is driven to descend, so that the cloth 133 of the cloth disc assembly 13 lands on the surface to be cleaned, and under the continuous driving of the driving assembly 12, the cloth disc assembly 13 continuously rotates on the surface to be cleaned to clean the ground; when the cloth disc assembly 13 does not need to perform cleaning work, the cloth disc assembly 13 is driven to ascend, so that the cloth 133 of the cloth disc assembly 13 is lifted away from the surface to be cleaned.

[0111] In other embodiments, the threaded lifting mechanism 170 can include a screw, a nut and a motor arranged in a conventional manner, the screw is rotatably connected to the driving end 121, the motor is fixedly connected to the driving end 121, the output shaft of the motor is fixedly connected with the screw; the nut is fixedly connected to the cloth disc assembly 13, and the nut is threadedly connected with the screw. The motor rotates to drive the screw to rotate, and the screw drives the nut to slide up and down, thereby driving the cloth disc assembly 13 to land or move away from the surface to be cleaned. The threaded lifting mechanism 170 has a relatively simple structure and low cost.

[0112] In the prior art, the inside of the cleaning device 10 usually has a complex internal structure, such as a dust collecting mechanism, a walking mechanism, a water supplementing mechanism, a side brush mechanism, a control system, etc., and in order to make the cleaning device 10 have a larger cleaning coverage, the size of the cleaning device 10 needs to be small and low, which has a higher requirement on the utilization rate of the internal space of the cleaning device 10. After being arranged in this way, the rotation driving, lifting in the height direction and pressure adjustment of the cloth disc assembly 13 can be realized by using one driving assembly 12, which has the advantage of high integration degree and can greatly save the internal space of the cleaning device 10, thereby providing more layout space for the layout of the internal structure of the cleaning device 10.

[0113] The control method provided by the application detects the dirt degree of the surface to be cleaned, and adjusts the output rotating speed of the driving assembly according to the dirt degree. When the output rotating speed is N1, the output rotating speed of the driving assembly drives the length of the adjustable connecting part to be L1, and when the output rotating speed is N2, the output rotating speed of the driving assembly drives the length of the adjustable connecting part to be L2, wherein N2 is greater than N1, and L2 is greater than L1. In this way, the dirt degree of the surface to be cleaned can be associated with the running length of the adjustable connecting part. Since the adjustable connecting part connects the cloth disc assembly and the machine body, the installation height of the cloth disc assembly relative to the machine body can be adjusted by controlling the running length of the adjustable connecting part, thereby adjusting the contact pressure between the cloth disc assembly and the surface to be cleaned, improving the problem of single cleaning pressure of the cloth disc assembly, and better adapting to different dirt degrees of the cleaning working conditions, and taking into account the cleaning effect of different working conditions. At the same time, since L2 is greater than L1 when N2 is greater than N1, the linkage control between the working speed and the working pressure of the cloth disc assembly can be realized, which is conducive to the optimization of the control logic of the cleaning device during operation, so as to select smaller contact pressure and lower working speed to clean the surface to be cleaned when the dirt degree of the surface to be cleaned is lighter, save the output power of the driving assembly, and achieve the effect of energy saving; and when the surface to be cleaned encounters stubborn stains, larger contact pressure and higher working speed are selected to clean the surface to be cleaned, so as to improve the cleaning effect of the cloth disc assembly on the stubborn stains, and therefore the user experience of the cleaning device can be improved.

[0114] In summary, the present application effectively overcomes some practical problems in the prior art, thus having high utilization value and use significance. The above examples only exemplarily illustrate the principles and effects of the present application, but are not used to limit the present application. Any person skilled in the art can modify or change the above examples without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A control method applied to a cleaning device, characterized by, The cleaning device comprises a machine body, a cleaning cloth disc assembly, a driving assembly and an adjustable connecting part, the cleaning cloth disc assembly is rotatably arranged at the bottom of the machine body under the driving of the driving assembly; The adjustable connecting part connects the driving assembly and the cleaning cloth disc assembly, and the control method comprises: detecting the dirt degree of the surface to be cleaned; adjusting the output rotating speed of the driving assembly according to the dirt degree, when the output rotating speed is N1, the output rotating speed of the driving assembly drives the length of the adjustable connecting part to be L1, when the output rotating speed is N2, the output rotating speed of the driving assembly drives the length of the adjustable connecting part to be L2, wherein N2 is greater than N1, and L2 is greater than L1.

2. The control method according to claim 1, characterized by, adjusting the output rotating speed of the driving assembly according to the dirt degree, when the output rotating speed is N3, the output rotating speed of the driving assembly drives the length of the adjustable connecting part to be L3, wherein N3 is greater than N2, and L3 is greater than L2.

3. The control method according to claim 1 or 2, characterized by, The cleaning device further comprises a water supplement device for supplementing water to the cleaning cloth disc assembly, and the control method further comprises: adjusting the water supplement amount of the cleaning cloth disc assembly supplied by the water supplement device according to the output rotating speed, when the output rotating speed is N1, the water supplement amount of the cleaning cloth disc assembly is Q1, and when the output rotating speed is N2, the water supplement amount of the cleaning cloth disc assembly is Q2, wherein Q1 is greater than Q2.

4. The control method according to claim 3, characterized by, The control method further comprises: adjusting the water supplement amount of the cleaning cloth disc assembly supplied by the water supplement device according to the output rotating speed, when the output rotating speed is N3, the water supplement amount of the cleaning cloth disc assembly is Q3, wherein Q2 is greater than Q3.

5. The control method according to claim 1, characterized by, adjusting the output rotating speed of the driving assembly according to the dirt degree, further comprising: obtaining the target rotating speed and the current rotating speed of the driving assembly; driving the adjustable connecting part to convert between the length L1 and the length L2 through the rotating speed difference between the target rotating speed and the current rotating speed.

6. The control method according to any one of claims 1 to 5, characterized by, The adjustable connecting part comprises a connecting assembly and a pressure adjusting assembly, the connecting assembly comprises an elastic member and a first connecting member, the first connecting member is arranged on the cleaning cloth disc assembly and is used for connecting with the driving end of the driving assembly, one end of the elastic member is connected with the first connecting member, and the other end of the elastic member is connected with the cleaning cloth disc assembly; the pressure adjusting assembly comprises a lifting surface and an abutting part, one of the lifting surface and the abutting part is arranged on the side of the cleaning cloth disc assembly facing the first connecting member, and the other of the lifting surface and the abutting part is arranged on the side of the first connecting member facing the cleaning cloth disc assembly; the rotating speed difference drives the abutting part to slide along the lifting surface to make the adjustable connecting part lengthen or shorten.

7. The control method according to claim 6, characterized by One of the first connecting member and the cleaning cloth disc assembly is provided with a boss, the lifting surface is located on the top of the boss, the abutting part is arranged on the other of the first connecting member and the cleaning cloth disc assembly corresponding to the boss, and limiting bodies for limiting the boss are arranged on the two sides of the abutting part.

8. The control method according to claim 6, characterized by One of the first connecting member and the disher assembly is provided with a groove, the lifting surface is located at the bottom of the groove, and the abutting portion is provided on the other one of the first connecting member and the disher assembly corresponding to the groove and extends into the groove to abut against the lifting surface.

9. The control method according to claim 6, characterized by, The abutting portion comprises an abutting surface matching the shape of the lifting surface, the abutting surface abuts against the lifting surface and slides relative to the lifting surface when there is a rotational speed difference between the abutting portion and the lifting surface.

10. The control method according to claim 6, characterized by, The lifting surface is provided in plurality, the plurality of lifting surfaces are arranged in an array along the circumference of the first connecting member, and each lifting surface corresponds to at least one abutting portion.

11. The control method according to claim 6, characterized by, The first connecting member is provided with a receiving cavity, the disher assembly comprises a disher mounting frame and a second connecting member, the second connecting member is slidingly installed on the first connecting member and extends into the receiving cavity at one end along a sliding direction and is connected with the disher mounting frame at the other end, one end of the elastic member is connected with the second connecting member, and the other end of the elastic member is connected with the wall of the receiving cavity.

12. The control method according to claim 11, characterized by, The second connecting member comprises a columnar portion and a limiting portion, one end of the columnar portion extends into the receiving cavity and is connected with the limiting portion, the other end is connected with the disher mounting frame, the limiting portion at least partially extends to the outer periphery of the columnar portion, and the elastic member surrounds the columnar portion in the circumferential direction and is arranged between the limiting portion and the bottom wall of the receiving cavity.

13. The control method according to claim 11, characterized by, The second connecting member comprises a sleeve portion, a columnar portion and a limiting portion, one end of the sleeve portion is connected with the disher mounting frame, the other end is detachably connected with the columnar portion, one end of the columnar portion extends into the receiving cavity and is connected with the limiting portion, and the limiting portion at least partially extends to the outer periphery of the sleeve portion.

14. The control method according to claim 6, characterized by, The elastic member generates deformation to store energy by compression, and the elastic member is any one of a spring, a spring sheet, an elastic ball, a gas pressure support and a hydraulic support.

15. The control method according to claim 6, characterized by, The elastic member generates deformation to store energy by stretching, and the elastic member is any one of a spring, a spring sheet, a gas pressure support and a hydraulic support.

16. The control method according to claim 6, characterized by One end of the first connecting member away from the disher assembly is provided with a first connecting component, the driving end is provided with a second connecting component, one of the first connecting component and the second connecting component is a magnet, and the other is a ferromagnetic body; or, the first connecting component and the second connecting component are both magnets, the magnetism of the first connecting component and the second connecting component is opposite, and the first connecting component and the second connecting component are magnetically connected.

17. The control method according to claim 16, characterized by The side of the first connecting member away from the disher assembly is provided with a mounting groove, the first connecting component is at least partially accommodated in the mounting groove, and the bottom wall of the mounting groove is at least partially supported on the lower edge of the first connecting component.

18. The control method according to claim 11, wherein The inner wall of the receiving cavity is provided with a stop portion extending towards the center of the receiving cavity, the stop portion is located below the opening of the receiving cavity, and the stop portion stops the second connecting member to limit the downward movement of the second connecting member relative to the receiving cavity.

19. The control method according to claim 6, characterized by, The outer circumferential surface of the first connecting piece is a polygonal cylindrical surface structure, and the driving end is provided with a polygonal hole structure matching the outer circumferential surface of the first connecting piece.

20. The control method according to claim 6, wherein The driving assembly further comprises a lifting driving mechanism, which can drive the dish plate assembly to fall to the surface to be cleaned and can drive the dish plate assembly to lift and move away from the surface to be cleaned.

21. The control method according to claim 20, wherein The lifting driving mechanism comprises a threaded lifting mechanism, which comprises a first shaft sleeve, a second shaft sleeve and a damping sleeve. The driving assembly is used to drive the first shaft sleeve to rotate. The second shaft sleeve is coaxially sleeved outside the first shaft sleeve and is connected with the dish plate assembly. A screw mechanism is arranged between the first shaft sleeve and the second shaft sleeve. The damping sleeve is connected with the shell of the driving assembly and is sleeved outside the second shaft sleeve and in interference abutment with the second shaft sleeve. The second shaft sleeve realizes lifting movement with the first shaft sleeve through the screw mechanism to drive the dish plate assembly to fall to and move away from the surface to be cleaned.

22. A cleaning apparatus, characterized by The control method of any one of claims 1 to 21 is used in the cleaning operation.

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