Surface cleaning machine

Abstract

The surface cleaning machine comprises a machine body and further comprises a cleaning cylinder of a detachable structure. One part of the cleaning cylinder is of a flexible and deformable structure, and the cleaning cylinder is of a structure which can be deformed and expanded at least in the radial direction; a scraping piece is arranged on the machine main body, and the scraping piece is of a structure extending and protruding towards the cleaning cylinder; when the cleaning cylinder does not rotate and roll, the scraping piece does not form a structure of touching and pressing the outer surface of the cleaning cylinder; and when the cleaning cylinder rotates and rolls, the scraping piece forms a contact structure on the outer surface of the cleaning cylinder, so that the scraping piece scrapes dirt or a mixture of dirty liquid and dirt adhered to the outer surface of the cleaning cylinder. According to the scheme, the problems that a roller of an existing cleaning machine cannot restore the shape after deformation in the process of scraping dirt liquid and garbage, and the roller is prone to being damaged after long-term scraping are mainly solved, and the problems that the cleaning machine is prone to causing secondary pollution to the ground, poor in cleaning effect and single in function are further solved.

Description

Technical Field

[0001] The present invention relates to the field of floor cleaning, and particularly to a surface cleaning machine. Background Art

[0002] Existing cleaning machines mainly include mopping machines, floor scrubbers, floor washers, etc. The cleaning machine mainly realizes the cleaning effect on the ground. Among them, a roller is mainly arranged to contact the ground and rotate to realize the cleaning effect on the ground. During the process of cleaning the ground, the roller will absorb or adsorb a part of sewage and garbage. During the process of collecting the sewage and garbage, generally a scraping member is arranged to scrape the sewage and garbage on the roller, and suction is used to collect the scraped sewage and garbage. However, the current scraping structure easily causes the problem that the cleaning cylinder cannot recover its shape after being deformed under long-term scraping, and even the problem of being easily damaged, resulting in the problem that the effect of scraping sewage and garbage becomes poor or even fails, and further leading to the problems of secondary pollution of the ground and poor cleaning effect; at the same time, the functions of the existing cleaning machines are relatively single, and they cannot well meet the user's cleaning needs for the ground, affecting the user experience effect of using the cleaning machine. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the above related technologies to some extent.

[0004] For this reason, the purpose of the present invention is to provide a surface cleaning machine, mainly to solve the problems that the roller of the existing cleaning machine cannot recover its shape after being deformed and is easily damaged during the process of scraping sewage and garbage, and further to solve the problems of secondary pollution of the ground, poor cleaning effect, and single function of the cleaning machine.

[0005] An embodiment of the present invention provides a surface cleaning machine, including a machine body, and further including a cleaning cylinder. The cleaning cylinder is detachably installed on the machine body. When the cleaning cylinder is installed in place, it can be used to contact the ground for cleaning.

[0006] At least a part of the cleaning cylinder that contacts the ground is configured to be a soft and deformable structure, and the cleaning cylinder is configured to be deformable and expandable at least in the radial direction.

[0007] A scraping member is arranged on the machine body, and the scraping member is configured to extend and protrude towards the outer surface direction of the cleaning cylinder.

[0008] It is arranged that when the cleaning cylinder does not rotate and roll, the scraping member does not press on the outer surface of the cleaning cylinder, and when the cleaning cylinder rotates and rolls, the scraping member presses on the outer surface of the cleaning cylinder to scrape the dirt or the mixture of sewage and dirt adhered to the outer surface of the cleaning cylinder.

[0009] For the aforementioned surface cleaning machine, when the scraping member is configured to be in a structure that touches and presses the outer surface of the cleaning cylinder, the scraping member is set to form a structure that is in contact with a part of the outer surface of the cleaning cylinder and is in a structure that applies pressure.

[0010] When the scraping member is not configured to be in a structure that touches and presses the outer surface of the cleaning cylinder, the scraping member is set to be in a structure that is not in contact with the outer surface of the cleaning cylinder, or when the scraping member is not configured to be in a structure that touches and presses the outer surface of the cleaning cylinder, the scraping member is set to be in a structure that is in contact with the outer surface of the cleaning cylinder and is set to be in a structure that does not apply pressure to the outer surface of the cleaning cylinder.

[0011] For the aforementioned surface cleaning machine, when the scraping member forms a structure that touches and presses a part of the outer surface of the cleaning cylinder, a part of the outer surface of the cleaning cylinder is recessed toward the inside of the cleaning cylinder, and thus a scraping and dirt removing part with a recessed structure is formed at the position on the outer surface of the cleaning cylinder that is contacted and pressured by the scraping member.

[0012] When the scraping member is not configured to be in a structure that touches and presses the outer surface of the cleaning cylinder, the area part corresponding to the position of the scraping member on the outer surface of the cleaning cylinder is set to be in an arc surface structure, so that this area part is not in a recessed structure.

[0013] For the aforementioned surface cleaning machine, the cleaning cylinder includes an outer cylinder part and an inner cylinder part. A hollow structure interval area is formed between the outer cylinder part and the inner cylinder part in the radial direction. A plurality of interval parts are arranged in the interval area, and the interval parts are set to be respectively connected to the outer cylinder part and the inner cylinder part.

[0014] When the cleaning cylinder touches the ground, a cleaning and dirt removing part is formed on the outer surface of the cleaning cylinder. The cleaning and dirt removing part and the scraping and dirt removing part are set to be arranged at intervals in the rotation and rolling direction, and the scraping and dirt removing part is located above the cleaning and dirt removing part.

[0015] For the aforementioned surface cleaning machine, when the cleaning cylinder touches the ground, a part of the outer surface of the cleaning cylinder is deformed toward the interval area to form a cleaning and dirt removing part with a recessed structure. The cleaning and dirt removing part is set to form a structure that drives the transfer of dirt or a mixture of dirt and liquid.

[0016] The recess depth formed by the cleaning and dirt removing part is set to be greater than the recess depth formed by the scraping and dirt removing part.

[0017] For the aforementioned surface cleaning machine, when the scraping member is not configured to be in a structure that touches and presses the outer surface of the cleaning cylinder;

[0018] Set the distance H0 formed between the outer surface of the end position of the scraping member and the outer surface of the cleaning cylinder to be greater than or equal to 0 and less than or equal to one-half of the length distance H1 that the spacer extends in the rotational rolling direction, or, set the distance H0 formed between the outer surface of the end position of the scraping member and the outer surface of the cleaning cylinder to be greater than or equal to 0 and less than or equal to twice the thickness value H2 from the outer surface to the inner surface of the outer cylinder portion.

[0019] For the aforementioned surface cleaning machine, set the recess depth of the scraping portion to be greater than or equal to one-third of the thickness value H2 from the outer surface to the inner surface of the outer cylinder portion and less than or equal to three times the thickness value H2;

[0020] Or, set the recess depth of the scraping portion to be greater than or equal to one-half of the thickness value H2 from the outer surface to the inner surface of the outer cylinder portion and less than or equal to one-half of the length distance H1 that the spacer extends in the rotational rolling direction.

[0021] For the aforementioned surface cleaning machine, set the length distance H1 that the spacer extends in the rotational rolling direction to be greater than or equal to twice the thickness value H2 from the outer surface to the inner surface of the outer cylinder portion and less than or equal to the radius value of the outer cylinder portion, and set the thickness value H2 from the outer surface to the inner surface of the outer cylinder portion to be greater than or equal to 0.4 mm and less than or equal to 1.4 mm.

[0022] For the aforementioned surface cleaning machine, when the cleaning cylinder performs rotational rolling motion, it is configured to have a centrifugal force in the radial direction to cause the cleaning cylinder to be deformed and expanded in the radial direction, and when the cleaning cylinder is deformed and expanded, the scraping member can be configured to be in contact with the outer surface of the cleaning cylinder;

[0023] At least set the spacer and / or the outer cylinder portion to be configured to be deformable and expandable.

[0024] For the aforementioned surface cleaning machine, the spacer is set to be a flexible and deformable structure. When the cleaning cylinder performs rotational rolling motion, the spacer is configured to be deformed and expanded along its length direction under the action of the centrifugal force, so that the cleaning cylinder is deformed and expanded in the radial direction to form a structure in which a part of the outer surface of the cleaning cylinder is in contact with the scraping member.

[0025] For the aforementioned surface cleaning machine, set the thickness value H3 formed by the spacer in the rotational rolling direction to be greater than or equal to 0.5 mm and less than or equal to 5 mm;

[0026] And / or, set the length distance H1 that the spacer extends in the rotational rolling direction to be greater than or equal to twice the thickness value H3 formed by the spacer in the rotational rolling direction and set the thickness value H3 to be greater than or equal to 0.5 mm.

[0027] The aforementioned surface cleaning machine has an outer cylinder part configured as a flexible and deformable structure. When the cleaning cylinder rotates and rolls, at least a part of the area on the outer surface of the outer cylinder part corresponding to the spacer area is configured to deform and expand towards the outside of the cleaning cylinder under the action of the centrifugal force, so that a part of the outer surface of the cleaning cylinder is configured to be pressed by the scraping member.

[0028] In the aforementioned surface cleaning machine, the arc length value formed by the area on the outer surface of the outer cylinder part corresponding to the spacer area in the rotation and rolling direction is greater than or equal to the minimum arc length value formed by two adjacent spacer parts in the rotation and rolling direction.

[0029] And / or, the thickness value H2 from the outer surface to the inner surface of the outer cylinder part is less than or equal to the thickness value H3 formed by the spacer part in the rotation and rolling direction.

[0030] In the aforementioned surface cleaning machine, the diameter value D1 formed by the outer surface of the outer cylinder part when the cleaning cylinder does not rotate and roll is set, and the diameter value D2 formed by the outer surface of the outer cylinder part when the cleaning cylinder rotates and rolls is set, and D2 is greater than or equal to 1.02 times of D1.

[0031] In the aforementioned surface cleaning machine, a drive module is further provided on the machine body. The drive module provides power to drive the cleaning cylinder, and the rotation speed V of the cleaning cylinder rotating and rolling is greater than or equal to 200 r / min and less than or equal to 1000 r / min.

[0032] In the aforementioned surface cleaning machine, the rotation speed V is greater than or equal to 300 r / min and less than or equal to 600 r / min.

[0033] In the aforementioned surface cleaning machine, at least the outer cylinder part is configured as a structure made of a hydrophobic material so that the outer cylinder part is a structure that does not absorb liquid.

[0034] Or, at least the outer cylinder part and the spacer part are configured as structures made of a hydrophobic material so that the outer cylinder part and the spacer part are structures that do not absorb liquid.

[0035] The aforementioned surface cleaning machine further includes a floor cleaning cylinder, which is configured to be detachably installed on the machine body. When the floor cleaning cylinder is installed in place, it can be used to contact the ground for cleaning.

[0036] The floor cleaning cylinder and the cleaning cylinder are configured as structures that can be mutually replaced, so that when the cleaning cylinder is installed in place, the floor cleaning cylinder is not installed in place, and when the floor cleaning cylinder is installed in place, the cleaning cylinder is not installed in place.

[0037] It further includes a control module, which is electrically connected to the drive module provided on the machine body, and is used to enable the cleaning cylinder or the floor cleaning cylinder to independently rotate and roll to clean the ground.

[0038] For the aforementioned surface cleaner, a floor cleaning layer is provided on the floor cleaning cylinder. The floor cleaning layer is set to be a deformable structure and is composed of a water-absorbing material, so that the floor cleaning layer can absorb liquid;

[0039] It is set that when the floor cleaning cylinder is installed in place and not rotating and rolling, the scraping member is in contact with the floor cleaning layer, and when the floor cleaning cylinder is installed in place and rotating and rolling, the scraping member is embedded in the floor cleaning layer to scrape off the dirt or the mixture of dirt and liquid adhered to the floor cleaning layer.

[0040] For the aforementioned surface cleaner, it is set that the depression depth formed by the scraping part is less than the embedding depth of the scraping member into the floor cleaning layer, and the embedding depth of the scraping member into the floor cleaning layer is greater than or equal to one-third of the thickness value formed by the floor cleaning layer in the radial direction;

[0041] Or, it is set that the rotation and rolling speeds of the cleaning cylinder and the floor cleaning cylinder are the same, so as to form a rotation and rolling movement both at a rotation speed V.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] In this solution, a cleaning cylinder is provided to clean the ground. At the same time, it is set that the cleaning cylinder is not touched by the scraping member when it is not rotating and rolling, so that any position on the outer surface of the cleaning cylinder will not be in a state of being continuously touched by the scraping member when the cleaning cylinder is not in use, which can effectively prevent the problem that the outer surface of the cleaning cylinder is deformed and cannot be restored and is easily damaged due to long-term contact with the scraping member, greatly improving the safety and reliability of the cleaning cylinder.

[0044] In this solution, it is set that the cleaning cylinder can only be touched by the scraping member when rotating and rolling, and will not be touched by the scraping member when not rotating and rolling, so that the scraping member can effectively remove the liquid and garbage adhered to the outer surface of the cleaning cylinder only when the cleaning cylinder touches the ground for movement cleaning, so that the cleaning cylinder can effectively maintain a clean state.

[0045] In this solution, the cleaning cylinder is set to a structure that can expand at least in the radial direction, so as to realize the expansion of the cleaning cylinder in the radial direction during rotational rolling motion, and realize that the cleaning cylinder is pressed by the scraping member to form a scraping part. There is no need to set any power mechanism to provide power for the scraping member to press the cleaning cylinder. Instead, the centrifugal force formed by the rotational rolling motion of the cleaning cylinder itself is used to form a structure in which the outer surface of the cleaning cylinder is pressed by the scraping member. The overall structure is simple, the cost is low, the reliability is high, and it can effectively prevent the problem that the outer surface of the cleaning cylinder is continuously pressed by the scraping member for a long time.

[0046] In this solution, the expansion structure of the cleaning cylinder in the radial direction is fully utilized to realize its structure that can form contact pressure with the scraping member, and then realize the effect of the scraping member scraping the waste liquid and garbage on the cleaning cylinder. The structure is simple and the reliability is high.

[0047] In this solution, the expansion structure of the cleaning cylinder in the radial direction is fully utilized to realize that the outer surface of the cleaning cylinder effectively contacts the ground to form a concave cleaning part. Through the cleaning part, the scraping effect on the ground can be effectively realized to scrape and collect the waste liquid and garbage on the ground, and the effect of driving and transferring along the rotational rolling direction can be realized.

[0048] In this solution, the structure setting and size setting of the cleaning cylinder enable it to effectively form a structure that is not pressed by the scraping member when not in rotational rolling motion, and effectively form a structure that is pressed by the scraping member when in rotational rolling motion, improving the stability and reliability of the contact pressure between the cleaning cylinder and the scraping member.

[0049] When the cleaning cylinder of this solution is not in contact with the ground, it has a curved surface structure. Under the curved surface structure, the outer surface of the cleaning cylinder can be effectively scraped and cleaned, which can effectively keep the cleaning cylinder clean and dry, and improve the effect of removing waste liquid and garbage from the cleaning cylinder.

[0050] The structure setting and size setting of the cleaning cylinder of this solution can enable the cleaning part to be effectively formed, thereby realizing the scraping and cleaning effect on the ground. At the same time, it can effectively form a rebound pushing and transferring effect on the driven waste liquid and garbage, improving the transferring effect of the waste liquid and garbage, and improving the effectiveness of keeping the cleaning cylinder clean.

[0051] The structure of the cleaning cylinder of this solution can form a concave cleaning part when in contact with the ground to realize the accommodation and driving transfer of the waste liquid and garbage on the ground, realize the cleaning effect on the ground, and can realize the continuous switching effect between the curved surface structure and the concave cleaning part of the cleaning part, which can effectively keep the cleaning cylinder clean and reduce the secondary pollution of the ground.

[0052] The outer cylinder part or the cleaning cylinder of this solution is made of a hydrophobic material, at least making the outer cylinder part have a structure that does not absorb the sewage liquid, which can effectively prevent the sewage from being absorbed by the outer cylinder part. At the same time, the scraping part can effectively scrape the sewage and garbage adhered to the outer surface of the outer cylinder part, so that the outer cylinder part can be effectively kept clean and dry for a long time, not easy to mildew and stink, and not easy to cause secondary pollution to the ground, greatly improving the user experience effect.

[0053] In this solution, a cleaning cylinder and a floor cleaning cylinder are provided. The cleaning cylinder and the floor cleaning cylinder are set to be interchangeable structures to achieve the multi-functional use effect of the surface cleaning machine. Users can choose the cleaning cylinder to perform a cleaning process that does not absorb the sewage liquid on the ground but can drive the sewage liquid and garbage for transfer and collection, or they can choose the floor cleaning cylinder to perform a cleaning process that absorbs the sewage liquid on the ground and collects the garbage, improving the user's usage requirements for floor cleaning, and further improving the user experience effect.

[0054] In this solution, for the cleaning cylinder and the floor cleaning cylinder, by setting a scraping part, the scraping of the sewage liquid and garbage on the cleaning cylinder and the floor cleaning cylinder can be realized. And the depression depth formed by the scraping part is less than the embedding depth of the scraping part into the cleaning layer to form different scraping effects. Furthermore, a single scraping part can effectively and independently match to achieve the scraping effect on the cleaning cylinder and the floor cleaning cylinder, making the overall structure simple and the scraping effect better. Description of the Drawings

[0055] Figure 1 Stereoscopic schematic diagram of the cleaning cylinder installed on the machine body;

[0056] Figure 2 Stereoscopic schematic diagram of the cleaning cylinder;

[0057] Figure 3 Structural schematic diagram of the cleaning cylinder;

[0058] Figure 4 Structural schematic diagram when the scraping part does not touch the outer surface of the cleaning cylinder when the cleaning cylinder does not perform rotational rolling motion;

[0059] Figure 5 For Figure 4 Partial enlarged schematic diagram at A in

[0060] Figure 6 Structural schematic diagram when the scraping part touches the outer surface of the cleaning cylinder when the cleaning cylinder performs rotational rolling motion;

[0061] Figure 7 For Figure 6 Partial enlarged schematic diagram at B in

[0062] Figure 8Schematic diagram of the structure for forming a cleaning and dirt portion when the cleaning cylinder contacts the ground for cleaning and a scraping member for forming a scraping dirt portion;

[0063] Figure 9 Schematic diagram of the cleaning cylinder installed on the machine body;

[0064] Figure 10 Stereoscopic schematic diagram of the cleaning cylinder;

[0065] Figure 11 Schematic diagram of the structure of the cleaning cylinder;

[0066] Figure 12 Schematic diagram of the structure for forming an embedding interference by embedding the scraping member into the cleaning layer of the cleaning cylinder;

[0067] Figure 13 For Figure 12 Partial enlarged schematic diagram at position C in

[0068] Reference numerals: 100 - machine body, 1 - cleaning cylinder, 101 - outer cylinder part, 102 - inner cylinder part, 103 - spacer part, 104 - spacer area, 105 - scraping dirt part, 106 - cleaning and dirt part, 2 - scraping member, 3 - cleaning cylinder, 301 - cleaning layer. Detailed implementation manners

[0069] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0070] Embodiment: The surface cleaning machine of the present invention, as Figures 1 to 13 shown in the composition, the surface cleaning machine mainly realizes the cleaning treatment of the ground. Among them, the cleaning effect of the ground is realized by setting the cleaning cylinder 1 and the cleaning cylinder 3. The cleaning cylinder 1 and the cleaning cylinder 3 are set as a structure that can be replaced with each other to realize the multi-functional use effect of the cleaning machine, so as to better meet the use needs of users.

[0071] The surface cleaning machine of this solution includes a machine main body 100, which is mainly used to move on the ground to achieve the cleaning of the ground. Among them, the surface cleaning machine also includes a cleaning cylinder 1, and the cleaning cylinder 1 is set to be detachably installed on the machine main body 100. The user can install the cleaning cylinder 1 in place or disassemble the cleaning cylinder 1. When the cleaning cylinder 1 is installed in place, it can be used to contact the ground for cleaning, mainly to achieve the driving and transfer collection of the sewage and garbage on the ground. Among them, at least the part of the cleaning cylinder 1 that contacts the ground is set to be a flexible and deformable structure, so that when the cleaning cylinder 1 contacts the ground, it can be deformed, and the scraping and cleaning effect on the ground can be formed through deformation, and the effect of driving the sewage and garbage on the ground for driving and transfer can be formed through deformation. And the cleaning cylinder 1 is configured to be a structure that can be deformed and expanded at least in the radial direction. When the cleaning cylinder 1 rotates and rolls, the cleaning cylinder 1 can be deformed and expanded in the radial direction. In the deformed and expanded structure, the outer surface of the cleaning cylinder 1 is offset outward. At the same time, a scraping member 2 is provided on the machine main body 100, and the scraping member 2 is set to be a structure that extends and protrudes toward the outer surface of the cleaning cylinder 1. When the cleaning cylinder 1 is in the deformed and expanded state, a structure in which the scraping member 2 touches the outer surface of the cleaning cylinder 1 can be formed. If the cleaning cylinder 1 is not deformed and expanded, the scraping member 2 does not form a structure that touches the outer surface of the cleaning cylinder 1. Specifically, when the cleaning cylinder 1 does not rotate and roll, the scraping member 2 does not form a structure that touches the outer surface of the cleaning cylinder 1. At this time, because the cleaning cylinder 1 does not rotate and roll, the cleaning cylinder 1 has a non-deformed and non-expanded structure, and the scraping member 2 does not form a structure that touches the outer surface of the cleaning cylinder 1. And when the cleaning cylinder 1 rotates and rolls, the scraping member 2 forms a structure that touches the outer surface of the cleaning cylinder 1 to scrape off the dirt or the mixture of sewage and dirt adhered to the outer surface of the cleaning cylinder 1. When the cleaning cylinder 1 rotates and rolls, the cleaning cylinder 1 will have a deformed and expanded structure. In the deformed and expanded structure, the outer surface of the cleaning cylinder 1 contacts the scraping member 2 and forms a contact pressure structure in which the scraping member 2 applies pressure. At this time, the scraping member 2 scrapes off the sewage and garbage on the outer surface of the cleaning cylinder 1 through the contact pressure structure on the outer surface of the cleaning cylinder 1, so that the outer surface of the cleaning cylinder 1 can be kept clean or dry.

[0072] In this solution, when the scraping member 2 forms a structure that touches the outer surface of the cleaning cylinder 1, the scraping member 2 is set to form a structure that is in contact with and applies pressure to a part of the outer surface of the cleaning cylinder 1. Mainly when the cleaning cylinder 1 rotates and rolls, the cleaning cylinder 1 is in a state of being swung under the rotation and rolling movement. At this time, the outer surface of the cleaning cylinder 1 can contact the scraping member 2 and form a contact pressure structure in which the scraping member 2 applies pressure. At this time, the scraping member 2 can scrape off the sewage and garbage on the outer surface of the cleaning cylinder 1.

[0073] In this solution, when the scraping member 2 does not form a structure that touches and presses the outer surface of the cleaning cylinder 1, the scraping member 2 is set to be a structure that does not contact the outer surface of the cleaning cylinder 1, that is, when the cleaning cylinder 1 does not perform rotational rolling motion, at this time the cleaning cylinder 1 is not in a flapping state, at this time the scraping member 2 cannot contact the outer surface of the cleaning cylinder 1, and the scraping member 2 cannot form a pressure on the outer surface of the cleaning cylinder 1. At this time, the outer surface of the cleaning cylinder 1 is in the initial natural state, and the outer surface of the cleaning cylinder 1 does not have any deformed structure, but is in an undeformed structural state. Or when the scraping member 2 does not form a structure that touches and presses the outer surface of the cleaning cylinder 1, the scraping member 2 is set to be a structure that contacts the outer surface of the cleaning cylinder 1 and the scraping member 2 is set to be a structure that does not apply pressure to the outer surface of the cleaning cylinder 1, that is, when the cleaning cylinder 1 does not perform rotational rolling motion, at this time the cleaning cylinder 1 is not in a flapping state, at this time although the scraping member 2 can contact the outer surface of the cleaning cylinder 1, but the scraping member 2 does not apply pressure to the outer surface of the cleaning cylinder 1. At this time, the outer surface of the cleaning cylinder 1 is in the initial natural state, and the outer surface of the cleaning cylinder 1 does not have any deformed structure, but is in an undeformed structural state; when the scraping member 2 does not form a structure that touches and presses the outer surface of the cleaning cylinder 1, at this time the scraping member 2 does not scrape the sewage and garbage on the outer surface of the cleaning cylinder 1, and the outer surface of the cleaning cylinder 1 is in an undeformed structural state.

[0074] It can be seen that in this solution, the cleaning cylinder 1 is set to clean the ground. At the same time, when the cleaning cylinder 1 does not perform rotational rolling motion, it is not touched and pressed by the scraping member 2, so that any position on the outer surface of the cleaning cylinder 1 will not appear in a state of being continuously touched and pressed by the scraping member 2 when the cleaning cylinder 1 is not in use. This can effectively prevent the problem that the outer surface of the cleaning cylinder 1 is deformed and cannot recover its shape and is easily damaged due to the long-term contact and pressure of the scraping member 2, greatly improving the safety and reliability of the cleaning cylinder 1.

[0075] In this solution, when the scraping member 2 forms a structure that presses against a part of the outer surface of the cleaning cylinder 1, a part of the outer surface of the cleaning cylinder 1 is recessed toward the inside of the cleaning cylinder 1. As a result, a scraping portion 105 with a recessed structure is formed at the position on the outer surface of the cleaning cylinder 1 that is contacted and pressured by the scraping member 2. A part of the scraping member 2 is located within the scraping portion 105 to form a structure that contacts and pressures the outer surface of the cleaning cylinder 1. A part of the scraping member 2 within the scraping portion 105 effectively forms a structure for scraping off the sewage and garbage on the outer surface of the cleaning cylinder 1. When the cleaning cylinder 1 rotates and rolls, structures pressed by the scraping member 2 are sequentially formed at different positions on the outer surface of the cleaning cylinder 1 in the rotation and rolling direction, and the scraping portions 105 are sequentially formed, thereby sequentially scraping off the sewage and garbage at different positions on the outer surface of the cleaning cylinder 1. Among them, when the scraping member 2 does not form a structure that presses against the outer surface of the cleaning cylinder 1, the area portion on the outer surface of the cleaning cylinder 1 corresponding to the position of the scraping member 2 is configured to have an arc surface structure, so that this area portion does not form a recessed structure. A part or all of the outer surface of the cleaning cylinder 1 has an arc surface structure and does not form a recessed structure, making it difficult for dirt and grime to accumulate on the outer surface of the cleaning cylinder 1. At this time, the arc surface structure of the outer surface of the cleaning cylinder 1 enables it to be effectively cleaned, facilitating the removal and collection of the sewage and dirt on the outer surface of the cleaning cylinder 1.

[0076] Regarding the specific structural part of the cleaning cylinder 1 in this solution, the cleaning cylinder 1 includes an outer cylinder part 101 and an inner cylinder part 102. The outer cylinder part 101 is located at the outer ring position of the inner cylinder part 102, and the inner cylinder part 102 is located at the inner ring position of the outer cylinder part 101. At the same time, the outer cylinder part 101 and the inner cylinder part 102 have a certain length value in the direction of the rotation axis to form their length structure. A hollow-structured spacer area 104 is formed between the outer cylinder part 101 and the inner cylinder part 102 in the radial direction. The spacer area 104 is mainly surrounded by the outer surface of the inner cylinder part 102 and the inner surface of the outer cylinder part 101. The spacer area 104 makes the outer cylinder part 101 and the inner cylinder part 102 be spaced apart from each other in the radial direction. A plurality of spacer parts 103 are arranged in the spacer area 104. The spacer parts 103 are arranged to be connected to the outer cylinder part 101 and the inner cylinder part 102 respectively. Specifically, the inner end of the spacer part 103 is connected to the outer surface of the inner cylinder part 102, and the outer end of the spacer part 103 is connected to the inner surface of the outer cylinder part 101, so as to realize that the spacer part 103 forms a connected structure between the outer cylinder part 101 and the inner cylinder part 102. When the inner cylinder part 102 rotates and rolls, the outer cylinder part 101 is driven to perform synchronous rotational rolling movement through the plurality of spacer parts 103. At the same time, the inner cylinder part 102 forms a support structure for the outer cylinder part 101 through the plurality of spacer parts 103. In the rotational rolling direction, a spacer area 104 is formed between two adjacent spacer parts 103. One spacer part 103 is arranged between two adjacent spacer areas 104, or a plurality of spacer parts 103 divide the spacer area 104 into multiple parts to form a part of the spacer area 104 between two adjacent spacer parts 103. Among them, when the cleaning cylinder 1 contacts the ground, a cleaning and dirt part 106 is formed on the outer surface of the cleaning cylinder 1. The cleaning and dirt part 106 forms a scraping and cleaning effect on the ground. The cleaning and dirt part 106 also forms an effect of accommodating waste liquid and garbage and driving them to be transferred along the rotational rolling direction. The cleaning and dirt part 106 and the dirt scraping part 105 are arranged to be spaced apart from each other in the rotational rolling direction, and the dirt scraping part 105 is located above the cleaning and dirt part 106, so that the dirt scraping part 105 is located above the cleaning and dirt part 106 to scrape the waste liquid and garbage on the outer surface of the cleaning cylinder 1. Part of the waste liquid and garbage flow or fall downward along the scraping direction to be collected and processed.

[0077] Optionally, both the outer cylinder part 101 and the inner cylinder part 102 are arranged in a cylindrical or annular structure.

[0078] In this solution, when the cleaning cylinder 1 touches the ground, a part of the outer surface of the cleaning cylinder 1 deforms towards the spacer 104 to form a dirt-cleaning part 106 with a concave structure. The dirt-cleaning part 106 is configured to form a structure that drives the transfer of dirt or a mixture of dirt and liquid. When the cleaning cylinder 1 is on the ground, due to the pressure of the machine body 100, a certain downward pressure towards the ground is applied, causing a part of the outer surface of the cleaning cylinder 1 to deform towards the spacer 104, thereby forming the dirt-cleaning part 106 with a concave structure. The dirt-cleaning part 106 scrapes the liquid and garbage on the ground to collect the liquid and garbage into the dirt-cleaning part 106, and then drives and transfers them along the direction of rotation. Among them, when the dirt-cleaning part 106 leaves the ground, the dirt-cleaning part 106 with a concave structure rebounds and resets to deform into an arc surface structure, and forms an elastic force on the liquid and garbage to achieve the effect of transferring and collecting the liquid and garbage. During the continuous rotation and rolling movement of the cleaning cylinder 1, different positions on the outer surface of the cleaning cylinder 1 contact the ground respectively, and the dirt-cleaning part 106 with a concave structure is formed in sequence. At the same time, the dirt-cleaning parts 106 are formed continuously in the direction of rotation, and are continuously formed with a concave structure that rebounds and deforms back to an arc surface structure. The whole process realizes the cleaning effect on the ground. At the same time, the concave depth formed by the dirt-cleaning part 106 is set to be greater than the concave depth formed by the dirt-scraping part 105, so that the dirt-cleaning part 106 has a deeper concave depth to accommodate the liquid and garbage for driving and transferring, and the dirt-scraping part 105 has a relatively shallower concave depth to form a scraping member 2 to scrape the liquid and garbage on the outer surface of the cleaning cylinder 1, achieving a better cleaning effect on the ground. When the scraping member 2 touches and presses on the outer surface of the cleaning cylinder 1, the depth of the dirt-scraping part 105 formed is relatively shallow, and then it can better scrape along the arc surface structure on the outer surface of the cleaning cylinder 1 to scrape off the liquid and garbage, and at the same time, it can prevent the outer surface of the cleaning cylinder 1 from being excessively worn or damaged, improving the stability and reliability of the cleaning cylinder 1.

[0079] Among them, the dirt-cleaning part 106 also has a structure that extends along the spacer 103 in the direction of the rotation axis of the cleaning cylinder 1. Mainly, the scraping member 2 is configured to extend along the direction of the rotation axis of the cleaning cylinder 1 to form its length structure in the direction of the rotation axis, and the spacer 103 is also configured to extend along the direction of the rotation axis to form its length structure in the direction of the rotation axis.

[0080] In this solution, the concave depth of the dirt-cleaning part 106 can be the maximum concave depth formed along the radial direction or the concave direction, that is, the maximum concave depth formed by the outer surface of the cleaning cylinder 1 towards the spacer 104.

[0081] In this solution, when the scraping member 2 does not form a structure that presses against the outer surface of the cleaning cylinder 1, the cleaning cylinder 1 is not rotating and rolling at this time. It is set that the spacing distance H0 formed between the outer surface of the end position of the scraping member 2 and the outer surface of the cleaning cylinder 1 is greater than or equal to 0 and less than or equal to half of the length distance H1 that the spacing portion 103 extends in the rotational rolling direction. It can be understood that when H0 = 0, the end position of the scraping member 2 is in contact with the outer surface of the cleaning cylinder 1, but the scraping member 2 does not apply pressure to the outer surface of the cleaning cylinder 1, that is, the scraping portion 105 is not formed at this time. When H0 > 0, the outer surface of the end position of the scraping member 2 and the outer surface of the cleaning cylinder 1 are separated by a spacing, that is, a non-contact structure; at the same time, it is limited that the spacing distance H0 is less than or equal to half of the length distance H1 that the spacing portion 103 extends in the rotational rolling direction to prevent the spacing distance formed between the outer surface of the end position of the scraping member 2 and the outer surface of the cleaning cylinder 1 from being too large. If this spacing distance is too large, it may cause that even when the cleaning cylinder 1 rotates and rolls, it cannot come into contact with the scraping member 2 and be pressed. Through the above size limitation, it can be effectively ensured that when the cleaning cylinder 1 does not rotate and roll, the scraping member 2 does not form a structure that presses against the outer surface of the cleaning cylinder 1, and it can be effectively ensured that when the cleaning cylinder 1 rotates and rolls, the scraping member 2 can form a structure that presses against the outer surface of the cleaning cylinder 1.

[0082] Alternatively, in this solution, it is set that the spacing distance H0 formed between the outer surface of the end position of the scraping member 2 and the outer surface of the cleaning cylinder 1 is greater than or equal to 0 and less than or equal to 2 times the thickness value H2 from the outer surface to the inner surface of the outer cylinder portion 101. It can be understood that when H0 = 0, the end position of the scraping member 2 is in contact with the outer surface of the cleaning cylinder 1, but the scraping member 2 does not apply pressure to the outer surface of the cleaning cylinder 1, that is, the scraping portion 105 is not formed at this time. When H0 > 0, the outer surface of the end position of the scraping member 2 and the outer surface of the cleaning cylinder 1 are separated by a spacing, that is, a non-contact structure; at the same time, it is limited that the spacing distance H0 is less than or equal to 2 times the thickness value H2 from the outer surface to the inner surface of the outer cylinder portion 101 to prevent the spacing distance formed between the outer surface of the end position of the scraping member 2 and the outer surface of the cleaning cylinder 1 from being too large. If this spacing distance is too large, it may cause that even when the cleaning cylinder 1 rotates and rolls, it cannot come into contact with the scraping member 2 and be pressed. Through the above size limitation, it can be effectively ensured that when the cleaning cylinder 1 does not rotate and roll, the scraping member 2 does not form a structure that presses against the outer surface of the cleaning cylinder 1, and it can be effectively ensured that when the cleaning cylinder 1 rotates and rolls, the scraping member 2 can form a structure that presses against the outer surface of the cleaning cylinder 1.

[0083] In this solution, the recess depth of the scraping part 105 is set to be greater than or equal to one-third of the thickness value H2 from the outer surface to the inner surface of the outer cylinder part 101 and less than or equal to three times the thickness value H2. This can prevent the recess depth formed by the scraping part 105 from being too large, so that when the scraping member 2 presses against the outer surface of the cleaning cylinder 1, the depth of the scraping part 105 formed is relatively shallow, and then it can better scrape along the arc surface structure on the outer surface of the cleaning cylinder 1 to scrape off the sewage and garbage. At the same time, it can prevent the outer surface of the cleaning cylinder 1 from being excessively worn or damaged, and improve the stability and reliability of the cleaning cylinder 1.

[0084] Or, in this solution, the recess depth of the scraping part 105 is set to be greater than or equal to one-half of the thickness value H2 from the outer surface to the inner surface of the outer cylinder part 101 and less than or equal to one-half of the length distance H1 that the spacer part 103 extends in the rotational rolling direction. This can prevent the recess depth formed by the scraping part 105 from being too large, so that when the scraping member 2 presses against the outer surface of the cleaning cylinder 1, the depth of the scraping part 105 formed is relatively shallow, and then it can better scrape along the arc surface structure on the outer surface of the cleaning cylinder 1 to scrape off the sewage and garbage. At the same time, it can prevent the outer surface of the cleaning cylinder 1 from being excessively worn or damaged, and improve the stability and reliability of the cleaning cylinder 1.

[0085] In this solution, the length distance H1 that the spacer part 103 extends in the rotational rolling direction is set to be greater than or equal to twice the thickness value H2 from the outer surface to the inner surface of the outer cylinder part 101 and less than or equal to the radius value of the outer cylinder part 101. The length distance H1 forms the length structure of the spacer part 103 in the rotational rolling direction. At this length distance, the spacer part 103 can be deformed and expanded. And the thickness value H2 from the outer surface to the inner surface of the outer cylinder part 101 is set to be greater than or equal to 0.4 mm and less than or equal to 1.4 mm. The thickness value H2 forms the thickness structure of the outer cylinder part 101 in the radial direction. At this thickness structure, the outer surface of the outer cylinder part 101 can be effectively deformed and expanded, so that the outer surface of the outer cylinder part 101 can be offset outward relative to the spacer part 103 or relative to the inner cylinder part 102, and a part of the outer surface of the outer cylinder part 101 can contact the scraping member 2 to form a pressed structure. At the same time, the thickness structure of the outer cylinder part 101 enables a part of the outer surface of the outer cylinder part 101 to be better deformed, effectively deformed toward the spacer area 104 to better form a recess structure, and then achieve a better scraping and cleaning effect on the ground.

[0086] Optionally, the outer cylinder part 101 is set to be in a ring shape or an integral circular ring structure, so that when the outer cylinder part 101 does not contact the ground, its outer surface is in an integral ring structure, that is, an integral arc-shaped ring structure.

[0087] In this solution, it can be understood that regardless of whether the cleaning cylinder 1 rotates and rolls, and regardless of whether the cleaning cylinder 1 cleans the ground, if the scraping member 2 is always in contact with the outer surface of the cleaning cylinder 1, it will cause fatigue wear at a certain position on the outer surface of the cleaning cylinder 1, and then it will be impossible to effectively return to the initial shape by resetting and rebounding, that is, to return to the arc-shaped structure by resetting and rebounding. After a long time, problems such as breakage will occur, resulting in a reduction in the service life and reliability of the cleaning cylinder 1. Considering the use environment and characteristics of the surface cleaner, the surface cleaner generally works for about 20 to 40 minutes, and the rest of the time is in a non-working state. If the scraping member 2 also forms a structure in contact with the outer surface of the cleaning cylinder 1 when the surface cleaner is in a non-working state, it will cause a certain position on the outer surface of the cleaning cylinder 1 to be continuously pressed for a long time to form a structure state that is continuously sunken, and then fatigue or even breakage will occur. If the pressure is excessive, the deformation and rebound effect of this position on the outer surface of the cleaning cylinder 1 will be reduced, and then it will be difficult to reset and rebound the deformation, and even breakage is likely to occur.

[0088] In this solution, it can be understood that during the continuous rotation and rolling movement of the cleaning cylinder 1, the position on the outer surface of the cleaning cylinder 1 that comes into contact with the scraping member 2 is in a state of continuous change in the direction of the rotation and rolling movement. There will be no situation where a certain position on the outer surface of the cleaning cylinder 1 is continuously and fixedly pressed by the scraping member 2. Therefore, there will be no problem that a certain position on the outer surface of the cleaning cylinder 1 is fatigued and unable to return to the reset shape, and there will be no problem that a certain position is damaged due to continuous pressing by the scraping member 2. It can better ensure that the outer surface of the cleaning cylinder 1 has a good reset and rebound deformation effect, and then better clean the ground and maintain a good effect of scraping off sewage and garbage with the scraping member 2, reducing secondary pollution to the ground.

[0089] In this solution, when the cleaning cylinder 1 rotates and rolls, a structure is configured to generate a centrifugal force in the radial direction to cause the cleaning cylinder 1 to deform and expand in the radial direction. When the cleaning cylinder 1 deforms and expands, the scraping member 2 is configured to be in contact with the outer surface of the cleaning cylinder 1; when the surface cleaner starts to work, the cleaning cylinder 1 is controlled to rotate and roll. During the rotation and rolling movement of the cleaning cylinder 1, a centrifugal force will be generated. Under the action of the centrifugal force, the cleaning cylinder 1 will deform and form a deformed expansion structure in the radial direction. Under the deformed expansion structure, the scraping member 2 can contact the outer surface of the cleaning cylinder 1 and form a contact pressure structure, and a scraping part 105 will be formed on the outer surface of the cleaning cylinder 1 to achieve the effect of the scraping member 2 scraping the cleaning cylinder 1 to remove liquid and garbage. Among them, at least the spacer part 103 and / or the outer cylinder part 101 can be configured to be a deformed expansion structure. The deformed expansion structure in the radial direction is mainly the spacer part 103 deforming and expanding and / or a part of the outer cylinder part 101 deforming and expanding, so that the cleaning cylinder 1 as a whole deforms and expands toward the outside in the radial direction, and then a contact pressure structure is formed in which the scraping member 2 contacts and applies pressure to the outer surface of the outer cylinder part 101, forming a structure in which the scraping member 2 can scrape the outer surface of the outer cylinder part 101 to remove liquid and garbage when the cleaning cylinder 1 is working.

[0090] Among them, it can be that the spacer part 103 is set to be a flexible and deformable structure, so that the spacer part 103 can deform and expand when subjected to the centrifugal force. When the cleaning cylinder 1 rotates and rolls, the spacer part 103 is configured to deform and expand along its length direction under the action of the centrifugal force, so that the cleaning cylinder 1 deforms and expands in the radial direction to form a structure in which a part of the outer surface of the cleaning cylinder 1 is in contact pressure with the scraping member 2. That is, when the plurality of spacer parts 103 are subjected to the centrifugal force, they will deform and expand along the length direction formed in the rotation and rolling direction or the radial direction of the cleaning cylinder 1, increasing the distance of the spacer space formed between the outer surface of the inner cylinder part 102 and the inner surface of the outer cylinder part 101. That is, it will increase the space distance of the spacer area 104 in the radial direction of the cleaning cylinder 1. Furthermore, it will cause the outer cylinder part 101 to expand toward the outside relative to the inner cylinder part 102 as a whole under the deformation and expansion of the spacer part 103, so that the outer surface of the outer cylinder part 101 deviates toward the outside of the cleaning cylinder 1 to contact the scraping member 2, and then a contact pressure structure in which the scraping member 2 is in contact pressure with the outer surface of the outer cylinder part 101 is realized. At the same time, the outer surface of the outer cylinder part 101 can effectively contact the ground to form a contact scraping and cleaning structure with applied pressure, and can also improve the cleaning effect on the ground.

[0091] For the structural part that deforms and expands the spacer 103, the thickness value H3 formed by the spacer 103 in the rotational rolling direction is mainly set to be greater than or equal to 0.5 mm and less than or equal to 5 mm. The size limitation of the thickness value H3 enables the spacer 103 to be deformed and expanded stably and effectively under the action of the centrifugal force, thereby realizing the overall offset of the outer cylinder 101 towards the external direction.

[0092] And / or, for the structural part that deforms and expands the spacer 103, the length distance H1 extended by the spacer 103 in the rotational rolling direction is mainly set to be greater than or equal to twice the thickness value H3 formed by the spacer 103 in the rotational rolling direction, and the thickness value H3 is set to be greater than or equal to 0.5 mm. The size limitation of the thickness value H3 enables the spacer 103 to be deformed and expanded stably and effectively under the action of the centrifugal force. At the same time, the limitation of the length distance H1 enables the spacer 103 to be deformed and expanded effectively along its length direction, thereby realizing the overall offset of the outer cylinder 101 towards the external direction.

[0093] Among them, it can also be that the outer cylinder 101 is set to be a flexible and deformable structure, so that the outer cylinder 101 can be deformed, realizing that the outer cylinder 101 can be deformed when subjected to an external force. When the cleaning cylinder 1 rotates and rolls, at least a part of the area corresponding to the spacer area 104 on the outer surface of the outer cylinder 101 is configured to be a structure that deforms and expands towards the external direction of the cleaning cylinder 1 under the action of the centrifugal force, so that a part of the outer surface of the cleaning cylinder 1 is configured to be a structure pressed by the scraper 2; that is, when the outer cylinder 101 is deformed under the action of the centrifugal force to form a deformation and expansion towards the external direction of the cleaning cylinder 1, the outer surface of the outer cylinder 101 is offset towards the external direction relative to the inner cylinder 102. Mainly, a part within the area corresponding to the spacer area 104 on the outer surface of the outer cylinder will deform and expand towards the external direction, thereby realizing that a part of the outer surface of the outer cylinder 101 contacts the scraper 2 and forms a pressed structure in which the scraper 2 contacts and applies pressure. At this time, the scraper 2 can scrape off the sewage and garbage adsorbed on the outer surface of the outer cylinder 101. At the same time, the outer surface of the outer cylinder 101 can effectively contact the ground to form a contact scraping cleaning structure with pressure applied, and can also improve the cleaning effect on the ground.

[0094] For the structural part that deforms and expands a part of the outer cylinder 101, it is set that the arc length value formed by the region part of the outer surface of the outer cylinder 101 corresponding to the spacer region 104 in the rotational rolling direction is greater than or equal to the minimum arc length value formed by two adjacent spacer parts 103 in the rotational rolling direction. By limiting the dimension of the arc length value formed by the region part of the outer surface of the outer cylinder 101 corresponding to the position of the spacer region 104, it is ensured that the arc length value within this region part of the outer cylinder 101 in the rotational rolling direction has a moderate length. At this arc length value, the region part of the outer surface of the outer cylinder 101 can deform and expand towards the outside, thereby realizing the overall offset of the outer cylinder 101 towards the outside direction, and enabling a part of the outer surface of the outer cylinder 101 to contact the scraping member 2 to form a structure to be pressed.

[0095] And / or, for the structural part that deforms and expands a part of the outer cylinder 101, it is set that the thickness value H2 from the outer surface to the inner surface of the outer cylinder 101 is less than or equal to the thickness value H3 formed by the spacer part 103 in the rotational rolling direction. By limiting the thickness value H2 from the outer surface to the inner surface of the outer cylinder 101, the thickness of the outer cylinder 101 in the radial direction is limited. Under this thickness structure, the outer surface of the outer cylinder 101 can effectively deform and expand, realizing the offset of the outer surface of the outer cylinder 101 towards the outside direction relative to the spacer part 103 or relative to the inner cylinder 102, and enabling a part of the outer surface of the outer cylinder 101 to contact the scraping member 2 to form a structure to be pressed.

[0096] In this solution, when the cleaning cylinder 1 deforms and expands during rotational rolling movement, it is set that the diameter value D1 formed by the outer surface of the outer cylinder 101 when the cleaning cylinder 1 does not perform rotational rolling movement. At this time, the cleaning cylinder 1 does not deform and expand, and the diameter value D1 formed by the outer surface of the outer cylinder 101 before the cleaning cylinder 1 deforms and expands. And when the cleaning cylinder 1 performs rotational rolling movement, the diameter value D2 formed by the outer surface of the outer cylinder 101. At this time, the cleaning cylinder 1 deforms and expands during rotational rolling movement, and the diameter value D2 formed by the outer surface of the outer cylinder 101 after the cleaning cylinder 1 deforms and expands. It is set that D2 is greater than or equal to 1.02 times of D1, so as to realize that the diameter value D2 formed by the outer surface of the cleaning cylinder 1 after deformation and expansion can enable the scraping member 2 to better press the outer surface of the cleaning cylinder 1, effectively preventing the cleaning cylinder 1 from deforming and expanding excessively in the radial direction, preventing the problem of excessive pressing depth when the scraping member 2 presses the outer surface of the outer cylinder 101, and effectively preventing the problem of excessive wear or breakage of the outer cylinder 101 caused by excessive pressing.

[0097] In this solution, a driving module is also provided on the machine body 100. The driving module mainly includes a driving motor. The driving motor is connected to a pulley assembly or a gear assembly to provide a driving wheel. The cleaning cylinder 1 is set to be detachably connected to the pulley assembly or the gear assembly so that the driving module provides driving force to make the cleaning cylinder 1 perform a rotating and rolling motion. The driving module provides power to drive the cleaning cylinder 1. The rotating speed V of the cleaning cylinder 1 performing the rotating and rolling motion is greater than or equal to 200 r / min and less than or equal to 1000 r / min. At this rotating speed, the cleaning cylinder 1 can not only effectively contact the ground to form a good cleaning effect, but also can be deformed and expanded well in the radial direction, enabling the scraping member 2 to effectively form a pressing structure on the outer surface of the outer cylinder portion 101. At the same time, at this rotating speed, it can effectively prevent the cleaning cylinder 1 from being excessively deformed and expanded in the radial direction, preventing the problem of excessive pressing depth when the scraping member 2 presses on the outer surface of the outer cylinder portion 101, and can effectively prevent the outer cylinder portion 101 from being excessively pressed and causing excessive wear or damage.

[0098] Preferably, in this solution, the rotating speed V is set to be greater than or equal to 300 r / min and less than or equal to 600 r / min. At this rotating speed, the cleaning cylinder 1 can not only effectively contact the ground to form a good cleaning effect, but also can be deformed and expanded well in the radial direction, enabling the scraping member 2 to effectively form a pressing structure on the outer surface of the outer cylinder portion 101. At the same time, at this rotating speed, it can effectively prevent the cleaning cylinder 1 from being excessively deformed and expanded in the radial direction, preventing the problem of excessive pressing depth when the scraping member 2 presses on the outer surface of the outer cylinder portion 101, and can effectively prevent the outer cylinder portion 101 from being excessively pressed and causing excessive wear or damage.

[0099] In this solution, for the structural part of the cleaning cylinder 1, at least the outer cylinder portion 101 is set to be composed of a hydrophobic material so that the outer cylinder portion 101 has a structure that does not absorb liquid, realizing that the outer surface of the outer cylinder portion 101 will not have a structure that absorbs sewage during the process of contacting the ground for cleaning. When the outer cylinder portion 101 contacts the ground, only a cleaning and sewage-containing portion 106 is formed to accommodate and drive the sewage, and it does not absorb the sewage itself. At the same time, it is beneficial for the outer cylinder portion 101 to maintain a clean and dry state, realizing an improvement in the collection effect of sewage and garbage and reducing the secondary pollution of the outer cylinder portion 101 to the ground.

[0100] In the present solution, with respect to the structural part of the cleaning cylinder 1, at least the outer cylinder portion 101 and the spacer portion 103 are configured to be composed of a hydrophobic material so that the outer cylinder portion 101 and the spacer portion 103 do not absorb liquid. At least the outer cylinder portion 101 and the spacer portion 103 are both configured to be composed of a hydrophobic material, so that the spacer portion 103 can be effectively deformed and will not absorb dirty liquid, so that the outer surface of the outer cylinder portion 101 will not have a structure that absorbs dirty liquid during the process of contacting the ground for cleaning. When the outer cylinder portion 101 contacts the ground, only the clean and dirty portion 106 is formed to accommodate the dirty liquid and drive it to be transferred. The outer cylinder portion 101 itself will not absorb the dirty liquid, which is beneficial for the outer cylinder portion 101 to remain in a clean and dry state, thereby improving the collection effect of dirty liquid and garbage and reducing the secondary pollution of the ground by the outer cylinder portion 101.

[0101] Optionally, in this solution, the cleaning cylinder 1 can be made of a hydrophobic material as a whole, and the outer cylinder 101, the inner cylinder 102 and the plurality of spacers 103 are all made of a hydrophobic material to achieve a structure in which the cleaning cylinder 1 does not absorb dirty liquid.

[0102] In this solution, in order to further enhance the multifunctional use effect of the surface cleaning machine so as to better meet the user's use needs for cleaning the floor, the surface cleaning machine also includes a floor cleaning cylinder 3, which is configured to be detachably mounted on the machine body 100. When the floor cleaning cylinder 3 is installed in place, it can be used to contact the floor for cleaning. When the floor cleaning cylinder 3 is installed in place, the surface cleaning machine can be started to work to achieve an independent cleaning effect on the floor. Among them, the floor cleaning cylinder 3 and the cleaning cylinder 1 are mainly configured to be interchangeable structures, so that when the cleaning cylinder 1 is installed in place, the floor cleaning cylinder 3 and the cleaning cylinder 1 can be replaced with each other. 3 is configured as a structure that is not installed in place, and when the floor cleaning cylinder 3 is installed in place, the cleaning cylinder 1 is configured as a structure that is not installed in place, so that the user can choose to install the cleaning cylinder 1 in place or to install the floor cleaning cylinder 3 in place, when the cleaning cylinder 1 is installed in place, the cleaning cylinder 1 can independently contact the ground for cleaning, and when the floor cleaning cylinder 3 is installed in place, the floor cleaning cylinder 3 can independently contact the ground for cleaning, and the user can manually install or remove the cleaning cylinder 1 or the floor cleaning cylinder 3 according to the cleaning requirements of the ground, so as to achieve a multifunctional use effect of the surface cleaning machine.

[0103] The surface cleaning machine further includes a control module, which is electrically connected to the drive module provided on the machine body 100. The drive module mainly includes a drive motor, and the drive motor drives a pulley assembly or a gear assembly to move, so as to drive the cleaning cylinder 1 or the floor cleaning cylinder 3 to rotate and roll, so that the control module can be used to make the cleaning cylinder 1 or the floor cleaning cylinder 3 independently rotate and roll to clean the ground; when the cleaning cylinder 1 is installed in place, the control module can control the cleaning cylinder 1 to be driven by the drive module to independently rotate and roll to achieve the cleaning effect of contacting the ground. When the floor cleaning cylinder 3 is installed in place, the control module can control the floor cleaning cylinder 3 to be driven by the drive module to independently rotate and roll to achieve the cleaning effect of contacting the ground, thereby realizing the multi-functional use effect of the surface cleaning machine.

[0104] For the structural part of the floor cleaning cylinder 3, a floor cleaning layer 301 is provided on the floor cleaning cylinder 3 for contacting the ground for cleaning treatment. Among them, the floor cleaning layer 301 is set to be a deformable structure and the floor cleaning layer 301 is made of a water-absorbing material, so that the floor cleaning layer 301 is a structure capable of absorbing liquid. When the floor cleaning layer 301 contacts the ground, it will deform to form a scraping and cleaning effect on the ground. At the same time, the floor cleaning layer 301 will absorb the liquid on the ground to form a cleaning effect of absorbing sewage on the ground. The sewage absorbed by the floor cleaning layer 301 is driven and transferred for collection and treatment. At the same time, the floor cleaning layer 301 can also clamp garbage, and realize clamping the garbage on the ground and then driving and transferring it for collection and treatment. Users can choose to install the floor cleaning cylinder 3 in place to achieve the cleaning effect of absorbing sewage on the ground.

[0105] For the structural part of removing the sewage and garbage absorbed on the floor cleaning cylinder 3, in this solution, when the floor cleaning cylinder 3 is installed in place and not rotating and rolling, the scraping member 2 is configured to be in contact with the floor cleaning layer 301, forming a structure in which the scraping member 2 interferes with the floor cleaning layer 301. And when the floor cleaning cylinder 3 is installed in place and rotates and rolls, the scraping member 2 is configured to be embedded in the floor cleaning layer 301 so that the scraping member 2 scrapes the dirt or the mixture of sewage and dirt adhered to the floor cleaning layer 301. That is, when the floor cleaning cylinder 3 is not rotating and rolling or rotating and rolling, the scraping member 2 is embedded in the floor cleaning layer 301 to form an embedded interference structure, so as to scrape the sewage and garbage absorbed on the floor cleaning layer 301.

[0106] In this solution, when the cleaning cylinder 1 is installed in place, the scraping member 2 touches and presses the cleaning cylinder 1 to scrape the sewage and garbage on the cleaning cylinder 1. When the floor cleaning cylinder 3 is installed in place, the scraping member 2 interferes with the floor cleaning cylinder 3 to scrape the sewage and garbage on the floor cleaning layer 301; the scraping member 2 can be respectively adapted to scrape the sewage and garbage on the cleaning cylinder 1 and the floor cleaning cylinder 3.

[0107] Optionally, the cleaning layer 301 can be set to a cloth material structure, a fluff material structure or a sponge material structure, so that the cleaning layer 301 has a soft and deformable structure and at the same time has a liquid-absorbing structure, realizing the effect that the cleaning layer 301 absorbs the sewage, that is, the waste water.

[0108] It can be seen that in this solution, the same scraping member 2 can be used to scrape the sewage and garbage from the cleaning cylinder 1 and the floor cleaning cylinder 3 respectively, without setting multiple scraping members 2 to respectively adapt to the cleaning cylinder 1 and the floor cleaning cylinder 3 for scraping the sewage and garbage. This makes the overall structure simple, the cost lower, and the adaptability of the same scraping member 2 to the cleaning cylinder 1 and the floor cleaning cylinder 3 better. The effects of scraping the sewage and garbage respectively are better, and it can effectively prevent the secondary pollution of the ground by the cleaning cylinder 1 or the floor cleaning cylinder 3.

[0109] In this solution, in order to enable the same scraping member 2 to better scrape the sewage and garbage from the cleaning cylinder 1 and the floor cleaning cylinder 3, and at the same time to reduce the jumping amplitude and noise of the cleaning cylinder 1 and the floor cleaning cylinder 3 when being scraped by the scraping member 2, and to improve the stability of the cleaning cylinder 1 and the floor cleaning cylinder 3 when cleaning the ground, this solution sets the depression depth formed by the scraping part 105 to be less than the embedding depth of the scraping member 2 into the cleaning layer 301, and the embedding depth of the scraping member 2 into the cleaning layer 301 is greater than or equal to one-third of the thickness value formed by the cleaning layer 301 in the radial direction. This realizes that the depth of the scraping part 105 formed when the scraping member 2 touches and presses on the outer surface of the cleaning cylinder 1 is relatively shallow, and then forms a better scraping along the arc surface structure on the outer surface of the cleaning cylinder 1 to realize scraping the sewage and garbage, and at the same time can prevent the outer surface of the cleaning cylinder 1 from being excessively worn or damaged, improving the stability and reliability of the cleaning cylinder 1; and realizes that the scraping member 2 forms a relatively deep embedding interference structure on the floor cleaning cylinder 3 to realize a deep scraping structure for the liquid absorbed by the cleaning layer 301, realizing an effective scraping of the sewage absorbed by the cleaning layer 301, and realizing a deep scraping structure for the garbage clamped by the cleaning layer 301, which is beneficial to scraping the cleaning layer 301 to clean it, reducing the secondary pollution of the cleaning layer 301 to the ground, and improving its working stability; at the same time, setting the depression depth formed by the scraping part 105 to be less than the embedding depth of the scraping member 2 into the cleaning layer 301 can make the jumping amplitude of the cleaning cylinder 1 and the floor cleaning cylinder 3 smaller when they contact the ground, and then realize less noise generated.

[0110] In this solution, the embedding depth of the scraping member 2 into the cleaning layer 301 is set to be greater than or equal to one-third of the thickness value formed by the cleaning layer 301 in the radial direction to realize the deep scraping effect on the cleaning layer 301, which is beneficial to the deep scraping effect of the sewage and the clamped garbage absorbed by the cleaning layer 301, and then improves the cleaning effect on the cleaning layer 301.

[0111] In this solution, the rotational rolling speeds of the cleaning cylinder 1 and the floor cleaning cylinder 3 are set to be the same, and they both rotate and roll at a rotational speed V. It can be understood that at the same rotational rolling speed, combined with the structures of the cleaning cylinder 1 and the floor cleaning cylinder 3 in this solution, it is possible to achieve not needing to control the drive module to change the rotational speed, and to improve the continuity and stability of the drive module providing the same rotational speed. At the same rotational speed, the scraping member 2 can independently scrape the cleaning cylinder 1 and the floor cleaning cylinder 3 to remove the contaminated liquid and dirt respectively. At the same rotational speed, the cleaning cylinder 1 can be deformed and expanded so that the outer surface of the cleaning cylinder 1 can be contacted by the scraping member 2 to form a contact pressure structure for applying pressure, thereby achieving the effect of the scraping member 2 scraping the contaminated liquid and garbage from the cleaning cylinder 1. At the same time, at the same rotational speed, both the cleaning cylinder 1 and the floor cleaning cylinder 3 can achieve a better cleaning effect on the ground. The setting of this solution realizes that without controlling the drive module to change the rotational speed, the cleaning cylinder 1 and the floor cleaning cylinder 3 can also form a better cleaning effect on the ground, without the need to separately configure the drive module to provide different rotational speeds due to the interchangeable structures of the cleaning cylinder 1 and the floor cleaning cylinder 3, and only a single rotational speed needs to be set, making the overall control simpler and more stable.

[0112] In this solution, the embedding depth of the scraping member 2 into the floor cleaning layer 301 can be the maximum embedding depth formed when the scraping member 2 is embedded into the floor cleaning layer 301, which can be the maximum embedding depth formed along the embedding direction or along the radial direction.

[0113] In this solution, the depression depth formed by the scraping part 105 can be the maximum depression depth of the depression structure formed along the contact pressure direction or along the radial direction, that is, the depression depth of the scraping part 105.

[0114] In this solution, for the structure of supplying clean water, a clean water tank and a water supply member are mainly set to supply clean water to the ground, or directly spray it onto the cleaning cylinder 1 or the floor cleaning cylinder 3, so as to achieve the effect of flushing and cleaning the cleaning cylinder 1 and the effect of flushing and cleaning the floor cleaning cylinder 3.

[0115] In this solution, the hydrophobic material can be set as silicone material, rubber material or silicone rubber material, etc., to make the cleaning cylinder 1 have a structure that does not absorb the contaminated liquid.

[0116] In this solution, the water-absorbing material can be set as cloth material, sponge material, etc., to make the floor cleaning cylinder 3 have a structure that absorbs the contaminated liquid; for example, the floor cleaning layer 301 is a fluff layer or the floor cleaning layer 301 is a sponge layer.

[0117] The surface cleaning machine of this solution can be a handheld structure or can be set as a self-mobile structure, such as a handheld floor washer or a self-mobile cleaning robot.

[0118] Working principle: The surface cleaning machine performs the cleaning task of the ground. It mainly cleans the ground through the cleaning cylinder 1, and at the same time, a scraping member 2 is provided to scrape off the sewage and garbage on the cleaning cylinder 1. Among them, when the cleaning cylinder 1 does not perform rotational rolling motion or does not clean the ground, the scraping member 2 will not form a structure that touches and presses the outer surface of the cleaning cylinder 1. At this time, no scraping part 105 will be formed on the outer surface of the cleaning cylinder 1, so that the outer surface of the cleaning cylinder 1 of the surface cleaning machine can maintain its initial shape for a long time in an unused state, that is, maintain an undeformed shape, and there will be no structure in which the scraping member 2 touches and presses the outer surface of the cleaning cylinder 1 for a long time. This can effectively prevent the problem that the outer surface of the cleaning cylinder 1 is deformed under the long-term touch and pressure of the scraping member 2 and is difficult to return to the initial shape, and can effectively prevent the problem of damage to the outer surface of the cleaning cylinder 1, improving the service life and use reliability of the cleaning cylinder 1; among them, when the cleaning cylinder 1 rotates and rolls to clean the ground, at this time the scraping member 2 can form a structure that touches and presses the outer surface of the cleaning cylinder 1 to form a scraping part 105 to scrape off the sewage and garbage on the outer surface of the cleaning cylinder 1, thereby effectively preventing the secondary pollution of the ground by the sewage and garbage and improving the cleaning effect of the ground; at the same time, a ground cleaning cylinder 3 is provided to form a structure that can be interchanged with the cleaning cylinder 1, and the ground can be independently cleaned by the ground cleaning cylinder 3 that can absorb sewage or the cleaning cylinder 1 that does not absorb sewage according to the needs of the user, realizing the multi-functional use effect of the surface cleaning machine, improving the user experience effect, and better meeting the user's use requirements.

[0119] Those of ordinary skill in the art can understand that the above embodiments are specific embodiments for implementing the present invention. In actual applications, various changes can be made in form and details without departing from the spirit and scope of the present invention, and all are within the protection scope of the present invention.

Claims

1. A surface cleaning machine, comprising a machine body, characterized in that: It further includes a cleaning cylinder, which is detachably mounted on the machine body. When the cleaning cylinder is installed in place, it can be used to contact the ground for cleaning; At least the part of the cleaning cylinder that contacts the ground is configured to be a soft and deformable structure, and the cleaning cylinder is configured to be deformable and expandable at least in the radial direction; A scraping member is provided on the machine body, and the scraping member is configured to extend and protrude towards the outer surface of the cleaning cylinder; It is set that when the cleaning cylinder does not rotate and roll, the scraping member does not press on the outer surface of the cleaning cylinder, and when the cleaning cylinder rotates and rolls, the scraping member presses on the outer surface of the cleaning cylinder to scrape off the dirt or the mixture of dirt and liquid adhered to the outer surface of the cleaning cylinder.

2. The surface cleaning machine according to claim 1, wherein: When the scraping member presses on the outer surface of the cleaning cylinder, it is set that the scraping member forms a structure in contact with a part of the outer surface of the cleaning cylinder and applies pressure; When the scraping member does not press on the outer surface of the cleaning cylinder, it is set that the scraping member is not in contact with the outer surface of the cleaning cylinder, or when the scraping member does not press on the outer surface of the cleaning cylinder, it is set that the scraping member is in contact with the outer surface of the cleaning cylinder and is configured not to apply pressure to the outer surface of the cleaning cylinder.

3. The surface cleaning machine according to claim 2, wherein: When the scraping member forms a structure pressing on a part of the outer surface of the cleaning cylinder, a part of the outer surface of the cleaning cylinder is recessed towards the inside of the cleaning cylinder, so that a scraping part with a recessed structure is formed at the position on the outer surface of the cleaning cylinder that is contacted and pressed by the scraping member; When the scraping member does not press on the outer surface of the cleaning cylinder, it is set that the area part corresponding to the position of the scraping member on the outer surface of the cleaning cylinder is configured to be an arc surface structure, so that this area part is not a recessed structure.

4. The surface cleaning machine according to claim 3, wherein: The cleaning cylinder includes an outer cylinder part and an inner cylinder part. A hollow interval area is formed between the outer cylinder part and the inner cylinder part in the radial direction. A plurality of interval parts are arranged in the interval area, and the interval parts are respectively connected to the outer cylinder part and the inner cylinder part; When the cleaning cylinder contacts the ground, a cleaning and dirt part is formed on the outer surface of the cleaning cylinder. It is set that the cleaning and dirt part and the scraping part are arranged at intervals in the rotation and rolling direction, and the scraping part is located above the cleaning and dirt part.

5. The surface cleaning machine according to claim 4, wherein: It is set that when the cleaning cylinder contacts the ground, a part of the outer surface of the cleaning cylinder deforms towards the interval area to form a cleaning and dirt part with a recessed structure, and the cleaning and dirt part is configured to drive the transfer of dirt or the mixture of dirt and liquid; It is set that the recess depth formed by the cleaning and dirt part is greater than the recess depth formed by the scraping part.

6. The surface cleaning machine according to claim 5, wherein: It is set that when the scraping member does not press on the outer surface of the cleaning cylinder; It is set that the interval distance H0 formed between the outer surface of the end position of the scraping member and the outer surface of the cleaning cylinder is greater than or equal to 0 and less than or equal to half of the length distance H1 that the interval part extends in the rotation and rolling direction, or it is set that the interval distance H0 formed between the outer surface of the end position of the scraping member and the outer surface of the cleaning cylinder is greater than or equal to 0 and less than or equal to twice the thickness value H2 from the outer surface to the inner surface of the outer cylinder part.

7. The surface cleaning machine according to claim 5 or 6, characterized in that: Set the depression depth of the scraping part to be greater than or equal to one-third of the thickness value H2 from the outer surface to the inner surface of the outer cylinder part and less than or equal to three times the thickness value H2; Or, set the depression depth of the scraping part to be greater than or equal to one-half of the thickness value H2 from the outer surface to the inner surface of the outer cylinder part and less than or equal to one-half of the length distance H1 that the spacer part extends in the rotational rolling direction.

8. The surface cleaning machine according to claim 7, characterized in that: Set the length distance H1 that the spacer part extends in the rotational rolling direction to be greater than or equal to twice the thickness value H2 from the outer surface to the inner surface of the outer cylinder part and less than or equal to the radius value of the outer cylinder part, and set the thickness value H2 from the outer surface to the inner surface of the outer cylinder part to be greater than or equal to 0.4 mm and less than or equal to 1.4 mm.

9. The surface cleaning machine according to claim 5, 6 or 8, characterized in that: Set a structure that constitutes a centrifugal force in the radial direction when the cleaning cylinder performs rotational rolling motion so that the cleaning cylinder is configured to deform and expand in the radial direction, and when the cleaning cylinder deforms and expands, the scraping member can be configured to be in contact with the outer surface of the cleaning cylinder; At least set the spacer part and / or the outer cylinder part to be configured to be a structure that can deform and expand.

10. The surface cleaner according to claim 9, characterized in that: The spacer part is set to be a flexible and deformable structure. When the cleaning cylinder performs rotational rolling motion, the spacer part is configured to deform and expand along its length direction under the action of the centrifugal force, so that the cleaning cylinder deforms and expands in the radial direction to form a structure in which a part of the outer surface of the cleaning cylinder is pressed by the scraping member.

11. The surface cleaning machine according to claim 10, wherein: Set the thickness value H3 formed by the spacer part in the rotational rolling direction to be greater than or equal to 0.5 mm and less than or equal to 5 mm; And / or, set the length distance H1 that the spacer part extends in the rotational rolling direction to be greater than or equal to twice the thickness value H3 formed by the spacer part in the rotational rolling direction and set the thickness value H3 to be greater than or equal to 0.5 mm.

12. The surface cleaning machine according to claim 9, wherein: The outer cylinder part is set to be a flexible and deformable structure. When the cleaning cylinder performs rotational rolling motion, at least a part of the area corresponding to the spacer area on the outer surface of the outer cylinder part is configured to deform and expand towards the outside of the cleaning cylinder under the action of the centrifugal force, so that a part of the outer surface of the cleaning cylinder is configured to be pressed by the scraping member.

13. The surface cleaning machine according to claim 12, wherein: Set the arc length value formed by the area part corresponding to the spacer area on the outer surface of the outer cylinder part in the rotational rolling direction to be greater than or equal to the minimum arc length value formed by two adjacent spacer parts in the rotational rolling direction; And / or, set the thickness value H2 from the outer surface to the inner surface of the outer cylinder part to be less than or equal to the thickness value H3 formed by the spacer part in the rotational rolling direction.

14. The surface cleaning machine according to claim 11 or 13, characterized in that: Set the diameter value formed by the outer surface of the outer cylinder part when the cleaning cylinder does not perform rotational rolling motion to be D1, and when the cleaning cylinder performs rotational rolling motion, the diameter value formed by the outer surface of the outer cylinder part is D2, and set D2 to be greater than or equal to 1.02 times D1.

15. The surface cleaning machine according to claim 14, characterized in that: A drive module is also provided on the machine body. The drive module provides power to drive the cleaning cylinder, and set the rotational speed V of the cleaning cylinder performing rotational rolling motion to be greater than or equal to 200 r / min and less than or equal to 1000 r / min.

16. The surface cleaning machine according to claim 15, characterized in that: Set the rotational speed V to be greater than or equal to 300 r / min and less than or equal to 600 r / min.

17. The surface cleaning machine according to claim 14, wherein: At least the outer cylinder part is configured with a hydrophobic material to make the outer cylinder part a structure that does not absorb liquid; Alternatively, at least the outer cylinder part and the spacer part are configured with a hydrophobic material to make the outer cylinder part and the spacer part a structure that does not absorb liquid.

18. The surface cleaning machine according to claim 14, characterized in that: It further includes a floor cleaning cylinder, which is configured to be detachably installed on the machine body and can be used to contact the ground for cleaning when the floor cleaning cylinder is installed in place; The floor cleaning cylinder and the cleaning cylinder are configured to be interchangeable, so that when the cleaning cylinder is installed in place, the floor cleaning cylinder is configured not to be installed in place, and when the floor cleaning cylinder is installed in place, the cleaning cylinder is configured not to be installed in place; It further includes a control module, which is electrically connected to the drive module provided on the machine body to enable the cleaning cylinder or the floor cleaning cylinder to independently perform a rotational rolling motion to clean the ground.

19. The surface cleaning machine according to claim 18, characterized in that: A floor cleaning layer is provided on the floor cleaning cylinder. The floor cleaning layer is configured to be deformable and is made of a water-absorbing material, so that the floor cleaning layer is a structure that can absorb liquid; It is set that when the floor cleaning cylinder is installed in place and not performing a rotational rolling motion, the scraping member is configured to be in contact with the floor cleaning layer, and when the floor cleaning cylinder is installed in place and performing a rotational rolling motion, the scraping member is configured to be embedded in the floor cleaning layer so that the scraping member scrapes off the dirt or the mixture of dirt and liquid adhered to the floor cleaning layer.

20. The surface cleaning machine according to claim 18, wherein: It is set that the depression depth formed by the dirt scraping part is less than the embedding depth of the scraping member into the floor cleaning layer, and the embedding depth of the scraping member into the floor cleaning layer is greater than or equal to one-third of the thickness value formed by the floor cleaning layer in the radial direction; Alternatively, it is set that the rotational rolling speeds of the cleaning cylinder and the floor cleaning cylinder are the same to form a rotational rolling motion both at a rotational speed V.

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