Stair-climbable sweeping robot and working method thereof

Abstract

The application relates to the technical field of floor sweeping machines, in particular to a stair-climbing floor sweeping robot and a working method thereof. The floor sweeping robot comprises a robot body and a lifting device. The lifting device comprises a first shell and a second shell. The upper surface of the first shell is provided with a first groove, and the upper surface of the second shell is provided with a second groove. Two corresponding outer sides of the first shell are respectively provided with first telescopic units. The telescopic end of the first telescopic unit moves vertically upward. The telescopic end is connected with the second shell through a connecting piece. The bottom of the first shell is provided with a first walking mechanism, and the bottom of the second shell is provided with a second walking mechanism. Two inner side walls in the second groove are respectively provided with clamping mechanisms. Through the ingenious cooperation among the first telescopic units, the walking mechanisms and the clamping mechanisms, the operation of climbing the robot body from the first step to the second step is completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of floor sweeping robots, and particularly to a floor-sweeping robot capable of climbing stairs and a working method thereof. BACKGROUND

[0002] A floor-sweeping robot is an intelligent household appliance capable of automatically sweeping the floor. The automatic and intelligent cleaning brings a certain degree of convenience to people and is deeply loved by consumers.

[0003] With the expansion of the consumer group, some consumers live in duplex structures or multi-story villas. However, the existing floor-sweeping robots do not have the function of climbing stairs. When the floor-sweeping robot finishes cleaning the lower floor and needs to clean the upper floor, the consumer needs to manually carry the floor-sweeping robot from the lower floor to the upper floor. Similarly, when the floor-sweeping robot needs to clean the lower floor after cleaning the upper floor, the consumer also needs to manually carry the floor-sweeping robot. Therefore, the existing floor-sweeping robots do not achieve completely intelligent and fully automatic floor-sweeping effect.

[0004] Therefore, the inventor proposes a floor-sweeping robot with a stair-climbing function to solve the above technical problems. SUMMARY

[0005] In view of the above problems, the present application is proposed to provide a floor-sweeping robot capable of climbing stairs and a working method thereof to overcome the problems or at least partially solve the problems, which comprises:

[0006] The floor-sweeping robot capable of climbing stairs comprises a robot body and a lifting device. The lifting device comprises a first shell and a second shell. The upper surface of the first shell is provided with a first groove, and the upper surface of the second shell is provided with a second groove. The first groove and the second groove are adjacent and connected. Two corresponding outer sides of the first shell are respectively provided with a first telescopic unit. The fixed end of the first telescopic unit is connected with the first shell, and the telescopic end of the first telescopic unit moves vertically upward. The telescopic end is connected with the second shell through a connecting piece. The bottom of the first shell is provided with a first walking mechanism, and the bottom of the second shell is provided with a second walking mechanism. When the first walking mechanism and the second walking mechanism are located on the same horizontal plane, the inner bottom surface of the first groove and the inner bottom surface of the second groove are flush. The side wall of the first groove away from the second groove is connected with the outside, the robot body moves through the first groove to the second groove, and two inner side walls in the second groove are respectively provided with a clamping mechanism.

[0007] When the robot body is located in the second groove, the clamping ends of the two clamping mechanisms are tightly matched with the outer side wall of the robot body, so that the robot body is stably arranged in the second groove.

[0008] Preferably, the connecting piece is a right triangle structure, one of the right angles of the connecting piece is connected with the telescopic end of the first telescopic unit, and the other right angle of the connecting piece is connected with the outer side wall of the second shell.

[0009] Preferably, the first walking mechanism comprises a first universal driving wheel set and a first universal supporting wheel set, and the second walking mechanism comprises a second universal driving wheel set and a second universal supporting wheel set.

[0010] Preferably, the walking mechanism of the robot body comprises a third universal driving wheel set and a third universal supporting wheel set.

[0011] The second groove penetrates through the second shell and is provided with a first via corresponding to the third universal driving wheel set, the edge scanning mechanism and the dust collection mechanism of the robot body respectively, and the first groove penetrates through the first shell and corresponds to the third universal supporting wheel set of the robot body.

[0012] Preferably, the clamping mechanism comprises a second telescopic unit and a clamping plate, the clamping plate is arc-shaped, the fixed end of the second telescopic unit is arranged on the inner side wall of the second groove, the telescopic end of the second telescopic unit is connected with the clamping plate, the telescopic end drives the telescopic clamping plate to move towards the robot body, and the clamping mechanism is two, and the two clamping plates move relatively to clamp the robot body.

[0013] Preferably, the side wall of the clamping plate facing the robot body is provided with a buffer anti-skid layer.

[0014] Preferably, the side of the first shell away from the second shell is provided with a slope communicating with the first groove.

[0015] Preferably, the outer side wall of the second shell away from the first shell is provided with a guide wheel.

[0016] Preferably, the second shell is provided with a distance monitor, and the monitoring end of the distance monitor is arranged towards the direction of the vertical face of the step.

[0017] Also provided is a working method of a stair-climbable sweeping robot, applied to the stair-climbable sweeping robot of any one of the above claims 1-9, and the method comprises:

[0018] S110, when the robot body moves to a specified position of the second groove, the robot body is clamped and fixed in the second groove by controlling the clamping mechanism;

[0019] S120, when the second shell contacts the vertical face of the first step, the second shell and the robot body are lifted by controlling the first telescopic mechanism;

[0020] S130, when rising to the specified height, the first walking mechanism of the first shell drives the second shell and the robot body to move towards the horizontal plane of the second step;

[0021] S140, when the first shell contacts the vertical plane of the first step, the first telescopic mechanism drives the first shell and the robot body to rise, so that the first shell and the second shell are located at the horizontal plane height of the second step;

[0022] S150, the second walking mechanism of the second shell drives the second shell and the first shell to move on the horizontal plane of the second step.

[0023] The application has the following advantages:

[0024] In the embodiment of the application, the above-mentioned sweeping robot includes a robot body and a lifting device, the lifting device includes a first shell and a second shell, the upper surface of the first shell is provided with a first groove, the upper surface of the second shell is provided with a second groove, the first groove and the second groove are adjacent and connected, two corresponding outer sides of the first shell are respectively provided with a first telescopic unit, the fixed end of the first telescopic unit is connected with the first shell, the telescopic end of the first telescopic unit moves vertically upward, the telescopic end is connected with the second shell through a connecting piece, the bottom of the first shell is provided with a first walking mechanism, the bottom of the second shell is provided with a second walking mechanism, when the first walking mechanism and the second walking mechanism are located at the same horizontal plane, the inner bottom surface of the first groove and the inner bottom surface of the second groove are flush, the side wall of the first groove away from the second groove is connected with the outside, the robot body moves to the second groove through the first groove, the two inner side walls in the second groove are respectively provided with a clamping mechanism, when the robot body is located in the second groove, the clamping end of the two clamping mechanisms is tightly matched with the outer side wall of the robot body, so that the robot body is stably arranged in the second groove. The first telescopic unit drives the second shell and the robot body to rise synchronously to the horizontal plane height of the second step, then the first walking mechanism drives the first shell to move towards the vertical plane of the first step and the second step, synchronously drives the second walking mechanism of the second step to contact the horizontal plane of the second step, further drives the first shell to contact the vertical plane of the first step and the second step through the first walking mechanism and the second walking mechanism, so as to contract the first telescopic unit and make the first shell rise to the horizontal plane height of the second step, so as to drive the first shell to the horizontal plane of the second step through the second walking mechanism; the first telescopic unit, the walking mechanism and the clamping mechanism are matched cleverly, the robot body is climbed from the first step to the second step, the position transformation of the sweeping robot in the space height is completed through simple structure design, which is practical and convenient for market promotion. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the present application will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and all other drawings obtained by those skilled in the art without any creative labor based on the embodiments in the present application shall fall within the protection scope of the present application.

[0026] Figure 1 A structural schematic diagram of a stair-climbable sweeping robot is shown when it is at the first step;

[0027] Figure 2 A structural schematic diagram of a stair-climbable sweeping robot is shown when it is climbing from the first step to the second step;

[0028] Figure 3 A structural schematic diagram of a second shell of a stair-climbable sweeping robot and a robot body is shown when it is at the second step level;

[0029] Figure 4 A structural schematic diagram of a stair-climbable sweeping robot is shown when it is at the second step level;

[0030] Figure 5 A structural schematic diagram of a stair-climbable sweeping robot is shown when it is not lifted;

[0031] Figure 6 A structural schematic diagram of a stair-climbable sweeping robot is shown when it is lifted;

[0032] Figure 7 A structural schematic diagram of a top surface of a stair-climbable sweeping robot is shown;

[0033] In the drawings, 10, robot body; 21, first shell; 22, second shell; 23, first groove; 24, second groove; 25, first telescopic unit; 26, connecting piece; 27, second telescopic unit; 28, clamping plate; 29, guide wheel; 30, slope. DETAILED DESCRIPTION

[0034] In order to make the purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail in combination with the drawings and specific embodiments. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative labor shall fall within the protection scope of the present application.

[0035] Please refer to Figure 1 , Figure 1The structure diagram of a stair-climbable floor cleaning robot is shown at the first step, the floor cleaning robot comprises a robot body 10 and a lifting device, the lifting device comprises a first shell 21 and a second shell 22, the upper surface of the first shell 21 is provided with a first groove 23, the upper surface of the second shell 22 is provided with a second groove 24, the first groove 23 and the second groove 24 are adjacent and communicated, two corresponding outer side portions of the first shell 21 are respectively provided with a first telescopic unit 25, the fixed end of the first telescopic unit 25 is connected with the first shell 21, the telescopic end of the first telescopic unit 25 moves vertically upward, the telescopic end is connected with the second shell 22 through a connecting piece 26; the bottom of the first shell 21 is provided with a first walking mechanism, the bottom of the second shell 22 is provided with a second walking mechanism, when the first walking mechanism and the second walking mechanism are located at the same horizontal plane, the inner bottom surface of the first groove 23 and the inner bottom surface of the second groove 24 are flush; the side wall of the first groove 23 away from the second groove 24 is communicated with the outside, the robot body 10 moves to the second groove 24 through the first groove 23, two inner side walls in the second groove 24 are respectively provided with a clamping mechanism;

[0036] When the robot body 10 is located in the second groove 24, the clamping ends of the two clamping mechanisms abut against the outer side wall of the robot body 10 to make the robot body 10 stably arranged in the second groove 24.

[0037] It should be noted that the robot body 10 comprises a walking mechanism, a dust suction mechanism and an edge sweeping mechanism arranged at the bottom thereof, and an obstacle avoidance mechanism arranged at the side thereof. The obstacle avoidance mechanism comprises a laser ranging unit, which can play a positioning role when the robot body 10 moves directly into the second groove 24. For example, when the laser ranging unit monitors that the distance between the head of the robot body 10 and the side wall of the second groove 24 reaches a preset distance, it indicates that the robot body 10 has moved to the designated position in the second groove 24, and then the walking mechanism of the robot body 10 is controlled to stop moving.

[0038] The first shell 21 and the second shell 22 play a bearing role when the robot body 10 climbs stairs. When the robot body 10 is about to move into the groove, the first shell 21 and the second shell 22 are at the same horizontal plane. That is, the inner bottom walls of the first groove 23 and the second groove 24 are at the same plane, and the robot body 10 can move into the second groove 24 of the second shell 22 through the first groove 23 of the first shell 21.

[0039] It should be noted that in the embodiment of the present application, more than half of the volume of the robot body 10 is located in the second groove 24, and the rest is located in the first groove 23. That is, when the robot body 10 is clamped, the volume located in the second groove 24 is greater than the volume located in the first groove 23.

[0040] As shown in FIG. 4, a structure schematic diagram of a stair-climbing robot is shown when it climbs from the first step to the second step. When the stair-climbing robot climbs from the first step to the second step, the second shell 22 and the clamped robot body 10 are lifted to the height of the second step by the first telescopic units 25 on both sides of the first shell 21. Then, the first walking mechanism of the first shell 21 is controlled to move the whole stair-climbing robot towards the second step, so that the second walking mechanism of the second shell 22 contacts the plane of the second step, and the first walking mechanism stops after the first shell 21 contacts the vertical plane between the first step and the second step. Figure 2 Figure 2 As shown in FIG. 5, a structure schematic diagram of the second shell 22 and the robot body 10 of a stair-climbing robot is shown when they are on the horizontal plane of the second step. When the first shell 21 stops moving, the first telescopic units 25 are controlled to contract. Since the volume of the second shell 22 and the robot body 10 on the horizontal plane of the second step is greater than the volume of the first shell 21 on the horizontal plane of the first step, that is, the weight of the telescopic end of the first telescopic units 25 is greater than the weight of the fixed end of the first telescopic units 25. When the first telescopic units 25 contract, the fixed end and the first shell 21 are lifted until the first shell 21 is located on the horizontal plane of the second step.

[0041] As shown in FIG. 6, a structure schematic diagram of the whole stair-climbing robot on the horizontal plane of the second step is shown. The second walking mechanism drives the second shell 22, the first shell 21 and the robot body 10 to move towards the vertical plane between the second step and the third step until the whole stair-climbing robot is located on the horizontal plane of the second step. Figure 3 Figure 3 As shown in FIG. 6, a structure schematic diagram of the whole stair-climbing robot on the horizontal plane of the second step is shown. The second walking mechanism drives the second shell 22, the first shell 21 and the robot body 10 to move towards the vertical plane between the second step and the third step until the whole stair-climbing robot is located on the horizontal plane of the second step.

[0042] As shown in FIG. 6, a structure schematic diagram of the whole stair-climbing robot on the horizontal plane of the second step is shown. The second walking mechanism drives the second shell 22, the first shell 21 and the robot body 10 to move towards the vertical plane between the second step and the third step until the whole stair-climbing robot is located on the horizontal plane of the second step. Figure 4 Figure 4 As shown in FIG. 6, a structure schematic diagram of the whole stair-climbing robot on the horizontal plane of the second step is shown. The second walking mechanism drives the second shell 22, the first shell 21 and the robot body 10 to move towards the vertical plane between the second step and the third step until the whole stair-climbing robot is located on the horizontal plane of the second step.

[0043] The above-mentioned related actions are repeated, so that the stair-climbing robot can complete the stair-climbing work. Figures 1 to 4

[0044] ​​​​In the embodiment of the present application, the sweeping robot comprises a robot body 10 and a lifting device, the lifting device comprises a first shell 21 and a second shell 22, the upper surface of the first shell 21 is provided with a first groove 23, the upper surface of the second shell 22 is provided with a second groove 24, the first groove 23 and the second groove 24 are adjacent and communicated, two corresponding outer sides of the first shell 21 are respectively provided with a first telescopic unit 25, the fixed end of the first telescopic unit 25 is connected with the first shell 21, the telescopic end of the first telescopic unit 25 moves vertically upward, the telescopic end is connected with the second shell 22 through a connecting piece 26, the bottom of the first shell 21 is provided with a first walking mechanism, the bottom of the second shell 22 is provided with a second walking mechanism, when the first walking mechanism and the second walking mechanism are located on the same horizontal plane, the inner bottom surface of the first groove 23 and the inner bottom surface of the second groove 24 are flush, the side wall of the first groove 23 away from the second groove 24 is communicated with the outside, the robot body 10 moves to the second groove 24 through the first groove 23, two inner side walls in the second groove 24 are respectively provided with a clamping mechanism, when the robot body 10 is located in the second groove 24, the clamping ends of the two clamping mechanisms abut against the outer side wall of the robot body 10 to stably arrange the robot body 10 in the second groove 24. The second shell 22 and the robot body 10 are synchronously lifted to the horizontal plane height of the second step through the first telescopic unit 25, then the first walking mechanism drives the first shell 21 to move towards the vertical plane of the first step and the second step, synchronously drives the second walking mechanism of the second step to contact the horizontal plane of the second step, further drives the first shell 21 to contact the vertical plane of the first step and the second step through the first walking mechanism and the second walking mechanism, so that the first telescopic unit 25 is retracted and the first shell 21 is lifted to the horizontal plane height of the second step, so as to drive the first shell 21 to the horizontal plane of the second step through the second walking mechanism. The robot body 10 is climbed from the first step to the second step through the clever cooperation between the telescopic unit, the walking mechanism and the clamping mechanism, the position transformation of the sweeping robot in the space height is completed through the simple structure design, the practicality is high, and the market promotion is facilitated.

[0045] Below, please refer to Figures 5-7 The above-mentioned sweeping robot capable of climbing stairs will be further explained through the following embodiments.

[0046] In the embodiment of the present application, the connecting piece 26 is a right triangle structure, one right angle side of the connecting piece 26 is connected with the telescopic end of the first telescopic unit 25, the other right angle side of the connecting piece 26 is connected with the outer side wall of the second shell 22.

[0047] It can be understood that, due to the vertical up-down movement of the first telescopic unit 25, the connecting piece 26 in the right-angled triangle structure is stable, and the second shell 22 and the robot body 10 can be smoothly lifted upwards under the action of the first telescopic unit 25.

[0048] In an embodiment of the present application, the first walking mechanism comprises a first universal driving wheel set and a first universal supporting wheel set, and the second walking mechanism comprises a second universal driving wheel set and a second universal supporting wheel set.

[0049] It should be noted that, in order to avoid the second shell 22 and the robot body 10 from falling due to too heavy weight, when the second shell 22 is lifted, the front end side wall of the second shell 22 is in contact with the vertical surface between the first step and the second step, so as to ensure the stable lifting of the second shell 22 and the robot body 10.

[0050] Only when it is ensured that the second shell 22 is lifted to be separated from the vertical surface and reaches the height of the second step, the first universal driving wheel set and the first universal supporting wheel set can drive the first shell 21 to move towards the vertical surface.

[0051] In an embodiment of the present application, the second shell 22 is provided with a distance monitor, and a monitoring end of the distance monitor is arranged towards the direction of the vertical surface of the stairs.

[0052] It can be understood that, by monitoring the distance between the second shell 22 and the vertical surface of the first step through the distance monitor, when the distance approaches a first preset value, it indicates that the second shell 22 is in contact with the vertical surface of the first step; after being lifted, the second shell 22 moves towards the vertical surface of the second step, and when the distance monitored by the distance monitor approaches a second preset value, it indicates that the first shell 21 located at the first step is in contact with the vertical surface of the first step.

[0053] In an embodiment of the present application, the walking mechanism of the robot body 10 comprises a third universal driving wheel set and a third universal supporting wheel set.

[0054] The second groove 24 penetrates through the second shell 22 and is respectively provided with a first via corresponding to the third universal driving wheel set, the edge sweeping mechanism and the dust collection mechanism of the robot body 10, and the first groove 23 penetrates through the first shell 21 and corresponds to the third universal supporting wheel set of the robot body 10.

[0055] It should be noted that, under the action of the clamping mechanism, the robot body 10, the first shell 21 and the second shell 22 can move synchronously.

[0056] The walking mechanism of the robot body 10 can be in contact with the horizontal surface of the stairs through the first through hole and the second through hole, so that the robot body 10 can be synchronously driven to move on the horizontal surface of the stairs by the first shell 21 and the second shell 22, that is, the horizontal surface of the stairs can be cleaned by the edge sweeping mechanism and the dust collecting mechanism of the robot body 10.

[0057] Of course, the robot body 10 can also be driven to move on the horizontal surface of the stairs by the first walking mechanism and the second walking mechanism.

[0058] In an embodiment of the present application, the clamping mechanism includes a second telescopic unit 27 and a clamping plate 28, the clamping plate 28 is arc-shaped, the fixed end of the second telescopic unit 27 is arranged on the inner side wall of the second groove 24, and the telescopic end of the second telescopic unit 27 is connected with the clamping plate 28, which drives the telescopic clamping plate 28 to move towards the robot body 10, and the clamping mechanism is two, and the two clamping plates 28 move relatively to clamp the robot body 10.

[0059] It can be understood that the concave surface of the clamping plate 28, that is, the side wall facing the robot body 10, is provided with an anti-skid layer and a buffer layer, the clamping plate 28 is driven by the second telescopic unit 27 to move towards the robot body 10 which has been positioned, and the concave surfaces of the two clamping plates 28 are tightly combined with the side wall of the robot body 10 to clamp the robot body 10 therebetween.

[0060] Through the action of the clamping mechanism, the robot body 10 is fixed in the second groove 24, so that the lifting device and the robot body 10 can move synchronously.

[0061] In an embodiment of the present application, the first shell 21 is provided with a slope 30 communicating with the first groove 23 on the side away from the second shell 22.

[0062] It can be understood that the robot body 10 can drive itself to the second groove 24 through the slope 30.

[0063] In an embodiment of the present application, the second shell 22 is provided with a guide wheel 29 on the outer side wall away from the first shell 21.

[0064] It can be understood that the guide wheel 29 can reduce the friction between the second shell 22 and the vertical surface of the stairs when the second shell 22 rises, so that the lifting process is more smooth.

[0065] The present application also provides a working method of a stair-climbing sweeping robot, which includes the following steps:

[0066] S110, when the robot body 10 moves to the specified position of the second groove 24, the robot body 10 is clamped and fixed in the second groove 24 by controlling the clamping mechanism.

[0067] S120, when the second shell 22 contacts the vertical surface of the first step, the second shell 22 and the robot body 10 are lifted by controlling the first telescopic mechanism;

[0068] S130, when the second shell 22 and the robot body 10 are lifted to the specified height, the second shell 22 and the robot body 10 are moved towards the horizontal surface of the second step by controlling the first walking mechanism of the first shell 21;

[0069] S140, when the first shell 21 contacts the vertical surface of the first step, the first shell 21 and the robot body 10 are lifted by controlling the first telescopic mechanism, so that the first shell 21 and the second shell 22 are both located at the height of the horizontal surface of the second step;

[0070] S150, the second shell 22 and the first shell 21 are moved on the horizontal surface of the second step by controlling the second walking mechanism of the second shell 22.

[0071] Although the preferred embodiments of the present application have been described, those skilled in the art who have the basic inventive concept can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present application.

[0072] Finally, it should also be noted that, in this document, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or terminal device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or terminal device including the element.

[0073] The above detailed description of the present application is provided, and the principles and implementation modes of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed; in view of the above, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A stair-climbable floor-sweeping robot comprising a robot body, characterized by, The lifting device comprises a first shell and a second shell, an upper surface of the first shell is provided with a first groove, an upper surface of the second shell is provided with a second groove, the first groove and the second groove are adjacent and communicated, two corresponding outer side portions of the first shell are respectively provided with a first telescopic unit, a fixed end of the first telescopic unit is connected with the first shell, a telescopic end of the first telescopic unit moves vertically upward, the telescopic end is connected with the second shell through a connecting piece, a bottom of the first shell is provided with a first walking mechanism, a bottom of the second shell is provided with a second walking mechanism, when the first walking mechanism and the second walking mechanism are located on the same horizontal plane, an inner bottom surface of the first groove and an inner bottom surface of the second groove are flush, a side wall of the first groove away from the second groove is communicated with the outside, the robot body moves to the second groove through the first groove, and two inner side walls in the second groove are respectively provided with clamping mechanisms. Specifically, the connecting piece is a right-angled triangle structure, one right-angled side of the connecting piece is connected with the telescopic end of the first telescopic unit, and the other right-angled side of the connecting piece is connected with the outer side wall of the second shell. The outer side wall of the second shell away from the first shell is provided with a guide wheel. The second shell is provided with a distance monitor, and a monitoring end of the distance monitor is arranged in the direction of the vertical surface of the stairs. When the robot body is located in the second groove, clamping ends of the two clamping mechanisms abut against the outer side wall of the robot body to enable the robot body to be stably arranged in the second groove.

2. The stair -climbable robotic vacuum cleaner of claim 1, wherein, The first walking mechanism comprises a first universal driving wheel set and a first universal supporting wheel set, and the second walking mechanism comprises a second universal driving wheel set and a second universal supporting wheel set.

3. The stair -climbable robotic vacuum cleaner of claim 2, wherein, The walking mechanism of the robot body comprises a third universal driving wheel set and a third universal supporting wheel set. The second groove penetrates through the second shell and is provided with a first via corresponding to the third universal driving wheel set, the edge scanning mechanism and the dust collection mechanism of the robot body.

4. The stair -climbable robotic vacuum cleaner of claim 1, wherein, The clamping mechanism comprises a second telescopic unit and a clamping plate, the clamping plate is arc-shaped, a fixed end of the second telescopic unit is arranged on the inner side wall of the second groove, a telescopic end of the second telescopic unit is connected with the clamping plate, the telescopic end drives the telescopic clamping plate to move towards the robot body, and the clamping mechanism is two, and the two clamping plates move relatively to clamp the robot body.

5. The stair -climbable robotic vacuum cleaner of claim 4, wherein, The side wall of the clamping plate towards the robot body is provided with a buffer anti-skid layer.

6. The stair -climbable robotic vacuum cleaner of claim 1, wherein, The side of the first shell away from the second shell is provided with an inclined slope communicating with the first groove.

7. A working method of a stair-climbable floor cleaning robot, characterized in that, The method is applied to the stair-climbing sweeping robot in any one of the preceding claims 1-6, and the method comprises: S110, when the robot body moves to a specified position of the second groove, the robot body is clamped and fixed in the second groove through the control of the clamping mechanism. S120, when the second shell contacts the vertical surface of the first step, the second shell and the robot body are lifted by controlling the first telescopic mechanism; S130, when the first shell contacts the vertical surface of the first step, the first shell and the robot body are lifted by controlling the first telescopic mechanism, so that the first shell and the second shell are located at the horizontal height of the second step; S140, when the first shell contacts the vertical surface of the first step, the first shell and the robot body are lifted by controlling the first telescopic mechanism, so that the first shell and the second shell are located at the horizontal height of the second step; S150, the second shell and the first shell are moved on the horizontal surface of the second step by controlling the second walking mechanism of the second shell.

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