A stair-climbing transport robot

Abstract

This application discloses a stair-climbing transport robot, relating to the field of logistics transportation technology, comprising: a vehicle body, two sets of track assemblies respectively disposed on both sides of the vehicle body in the direction of movement, and a lifting assembly disposed at one end of the vehicle body in the direction of movement; the lifting assembly includes a telescopic component disposed within the vehicle body, and at least one movable wheel suspended below the vehicle body, the movable end of the telescopic component extending to the bottom of the vehicle body and connected to the pivot of each movable wheel, driving the movable end of the telescopic component to extend or retract along the direction of the movable wheel away from or towards the vehicle body, changing the distance between each movable wheel and the bottom surface of the vehicle body, thereby assisting the stair-climbing transport robot in going up and down stairs. This structure is concealed at the bottom of the stair-climbing transport robot, which can prevent the structure from touching people or objects around it during the movement of the device.

Description

Technical Field

[0001] This application relates to the field of logistics and transportation technology, and in particular to a stair-climbing transportation robot. Background Technology

[0002] In real-world production and daily life, many buildings lack elevators. In such situations, transporting goods between floors mainly relies on manual labor to carry heavy objects up stairs. The difficulty of manual stair-climbing increases with the height of the floor and the weight of the goods, especially for those with weaker physical abilities. The emergence of stair-climbing transport robots has solved this problem.

[0003] Chinese patent application number CN202311037440.X discloses "a stair-climbing transport robot and its working method". In the solution provided by the patent, two sets of drive tracks are arranged side by side under the support frame. An angle adjustment component is set at one end of the support frame for each set of drive tracks. Both the drive tracks and the angle adjustment components are strip-shaped structures. By rotating the adjustment component, the angle between it and the drive track is changed, thereby assisting in the process of the stair-climbing transport robot going up and down stairs.

[0004] However, the angle adjustment component is exposed outside the equipment and is located on the same side of the support frame as the control lever of the equipment. The operator needs to operate the control lever to drive the stair-climbing transport robot, and the rotation of the angle adjustment component poses a danger to people or objects nearby. Therefore, this application proposes a stair-climbing transport robot that conceals the structure of the auxiliary stair-climbing transport robot, avoiding contact between the structure and surrounding people or objects during the movement of the stair-climbing transport robot. Summary of the Invention

[0005] The main purpose of this application is to provide a stair-climbing transport robot, which aims to solve the technical problem that when the structure of the stair-climbing transport robot is exposed, it is easy for it to come into contact with people or objects around the equipment.

[0006] A stair-climbing transport robot includes:

[0007] Vehicle body;

[0008] Two sets of track assemblies are respectively located on both sides of the vehicle body in the direction of movement;

[0009] A lifting assembly located at one end of the vehicle body in a direction of movement includes a telescopic member located inside the vehicle body and at least one movable wheel suspended below the vehicle body. The movable end of the telescopic member extends to the bottom of the vehicle body and is connected to each movable wheel. The movable end of the telescopic member is driven to extend or retract along the direction of the movable wheel away from or towards the vehicle body, thereby changing the distance between each movable wheel and the bottom surface of the vehicle body.

[0010] As a further improvement of this application, the tops of the two track assemblies, which are close to each other, are connected to the side wall of the vehicle body. The bottom surface of each track assembly extends beyond the bottom surface of the vehicle body by a predetermined distance. Each movable wheel is located between two track assemblies. The telescopic member includes a servo motor installed inside the vehicle body. The bottom surface of the vehicle body has an opening. The working end of the servo motor is connected to one end of a support arm. The other end of the support arm extends through the opening to the bottom surface of the vehicle body and is perpendicularly connected to the middle of a round rod. At least two movable wheels are sleeved on the side wall of the round rod. The axis of the round rod is perpendicular to the movable box of the vehicle body.

[0011] As a further improvement of this application, the track assembly includes at least two first rollers and at least two second rollers arranged in parallel and linear order, and a track ring sleeved around each of the first rollers and each of the second rollers; the first rollers support the inner top surface of the track ring, the second rollers support the inner bottom surface of the track ring, and the length of the inner top surface of the track ring is greater than the length of its inner bottom surface, so that the track ring forms an inverted trapezoidal ring.

[0012] As a further improvement of this application, the end of each first roller shaft near the lifting assembly extends through into the interior of the vehicle body and is coaxially connected to the shaft of a motor. The end of each second roller shaft near the lifting assembly is rotatably connected to one end of a connecting plate, and the other end of each connecting plate is connected to the side wall of the vehicle body.

[0013] As a further improvement of this application, at least one external toothed ring is sleeved on the outer arm of each first roller shaft and the outer wall of each second roller shaft. The inner wall of the track ring is provided with teeth that are adapted to the teeth of each external toothed ring, and each external toothed ring is engaged with the teeth of the track ring.

[0014] As a further improvement of this application, it also includes a power supply mechanism, which is provided with a charging pile and a battery disposed inside the vehicle body; the charging pile is provided with a flat support plate and a baffle standing on one side of the support plate, and the baffle is provided with a charging socket on the side adjacent to the support plate; the side wall of the vehicle body moving towards one end is provided with a charging connector that is connected to the battery and adapted to the charging socket, and the charging connector is inserted into the charging socket to charge the battery.

[0015] As a further improvement of this application, the stair-climbing transport robot also includes a cargo box disposed on the vehicle body, the cargo box having a hollow cavity, and the top of the cargo box communicating with the cavity and hinged with a lid.

[0016] As a further improvement of this application, the stair-climbing transport robot also includes a human-computer interaction device. The human-computer interaction device is equipped with a touch screen and a speaker installed on the top of the cargo box. The touch screen is used to display icons or text information and to receive external touch operations, and the speaker is used to broadcast voice information.

[0017] As a further improvement of this application, it also includes an information acquisition mechanism, which includes a pressure sensor disposed between the cargo box and the vehicle body, an infrared sensor disposed on the bottom surface of the vehicle body, a lidar disposed on the top surface of the cargo box, and a real-sensing depth camera disposed on the side wall of the cargo box near the lifting component. The pressure sensor, the infrared sensor, the lidar and the real-sensing depth camera are used to acquire information about the environment in which the stair-climbing robot is located.

[0018] As a further improvement of this application, it also includes a central control mechanism electrically connected to the servo motor, the motor, the touchscreen, the speaker, the pressure sensor, the infrared sensor, the lidar, and the depth camera. The central control mechanism has a number of control commands pre-stored. The central control mechanism receives signals from the touchscreen, the pressure sensor, the infrared sensor, the lidar, and the depth camera, and matches the corresponding control commands to control the servo motor and each motor to perform work, control the touchscreen to display information, and control the speaker to broadcast information.

[0019] The technical solution provided in this application may include the following beneficial effects:

[0020] During use, the telescopic component is located inside the front end of the vehicle body. The movable end of the telescopic component extends to the bottom surface of the vehicle body and is connected to the axle of each moving wheel. The extension or retraction of the movable end of the telescopic component can be controlled to change the distance between the front end of the vehicle body and the ground, thereby assisting the stair-climbing transport robot to go up and down stairs. This structure is concealed at the bottom of the stair-climbing transport robot, which can prevent the structure from touching people or objects around it during the movement of the equipment. Attached Figure Description

[0021] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0022] Figure 1 A 3D structural diagram of a stair-climbing transport robot. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the internal structure of a stair-climbing transport robot.

[0024] Figure 3 A 3D structural diagram of a stair-climbing transport robot. Figure 2 ;

[0025] Figure label:

[0026] 1. Vehicle body; 2. Track assembly; 21. First roller shaft; 22. Second roller shaft; 23. Track ring; 24. Motor; 25. Connecting plate; 26. External toothed ring; 3. Lifting assembly; 31. Telescopic component; 311. Servo motor; 312. Support arm; 313. Round rod; 32. Moving wheel; 4. Power supply mechanism; 41. Charging pile; 411. Support plate; 412. Baffle; 413. Charging socket; 414. Charging connector; 42. Battery; 5. Cargo box; 51. Cavity; 52. Box cover; 6. Human-machine interaction device; 61. Touch screen; 62. Speaker; 7. Information acquisition mechanism; 71. Pressure sensor; 72. Infrared sensor; 73. LiDAR; 74. Real-time depth camera. Detailed Implementation

[0027] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application as appropriate to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

[0033] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0034] Example 1

[0035] Figure 1 An embodiment of a stair-climbing transport robot according to this application is shown; see [link to relevant documentation]. Figure 1 In this embodiment, the stair-climbing transport robot includes: a vehicle body 1, two sets of track assemblies 2 respectively located on both sides of the vehicle body 1 in the direction of movement, and a lifting assembly 3 located at one end of the vehicle body 1 in the direction of movement.

[0036] Among them, see Figure 1The lifting component 3 includes a telescopic member 31 installed inside the vehicle body 1 and at least one movable wheel 32 suspended below the vehicle body 1. The movable end of the telescopic member 31 extends to the bottom of the vehicle body 1 and is connected to the pivot of each movable wheel 32. This causes the movable end of the telescopic member 31 to extend or retract along the direction of the movable wheel 32 away from or towards the vehicle body 1, thereby changing the distance between each movable wheel 32 and the bottom surface of the vehicle body 1. This method changes the height of the stair-climbing transport robot moving to one end during movement, thus assisting the robot in completing the process of going up and down stairs. Furthermore, this structure is concealed under the stair-climbing transport robot, preventing the lifting component 3 from contacting people or objects around it during movement.

[0037] Further, see Figure 1 The tops of the two track assemblies 2, which are close to each other on one side, are connected to the side wall of the vehicle body 1. The bottom surface of each track assembly 2 extends beyond the bottom surface of the vehicle body 1 by a predetermined distance to avoid the bottom surface of the vehicle body 1 from touching obstacles. The telescopic component 31 and each movable wheel 32 are located between the two track assemblies 2 to prevent the bottom surface of the vehicle body 1 from touching obstacles, while also concealing the lifting component 3.

[0038] Further, see Figure 2 The telescopic component 31 is a structure for connecting the servo motor 311 to the support arm 312. The servo motor 311 is located inside the vehicle body 1. The bottom of the vehicle body 1 has an opening. The working end of the servo motor 311 is connected to one end of the support arm 312. The other end of the support arm 312 extends through the opening to the bottom surface of the vehicle body 1 and is perpendicularly connected to the middle of a round rod 313. Four moving wheels 32 are sleeved on the side wall of the round rod 313. The axis of the round rod 313 is perpendicular to the direction of movement of the vehicle body 1 to ensure that the vehicle body 1 can still move when one end is raised.

[0039] In this embodiment, when transporting items between floors, the items can be placed on the vehicle body 1, and the two track components 2 can be driven to move the vehicle body 1. When the stair-climbing transport robot needs to climb stairs, the movable end of the telescopic component 31 is extended and the head of the vehicle body 1 is raised, so that the bottom of the two track components 2 near the head of the vehicle body 1 can be attached to the lower step and the subsequent higher step. When the stair-climbing transport robot needs to descend stairs, the head of the vehicle body 1 is initially suspended above the stair slope and is not unbalanced. The movable end of the telescopic component 31 extends and makes the moving wheel 32 contact the step. When the vehicle body 1 continues to move, the movable end of the telescopic component 31 is controlled to retract and the front end of the vehicle body 1 slowly falls, so that the bottom of the two track components 2 can be connected to the high step and the subsequent low step on the side of the front end of the vehicle body 1. In this way, the process of the stair climbing transport robot going up or down the stairs can be completed. Moreover, the structure is hidden under the bottom of the stair climbing transport robot, which can prevent the lifting component 3 from touching the surrounding people or objects during the movement of the equipment.

[0040] Example 2

[0041] In order for the stair-climbing transport robot to move on the inclined plane of the stairs, based on the above embodiments, see [link to previous section]. Figure 2 and Figure 3 The track assembly 2 includes at least two first rollers 21 and at least two second rollers 22 arranged in parallel and linear order, and a track ring 23 sleeved around each first roller 21 and each second roller 22.

[0042] Among them, see Figure 2 and Figure 3 The first roller 21 supports the inner top surface of the track ring 23, and the second roller 22 supports the inner bottom surface of the track ring 23. The length of the inner top surface of the track ring 23 is greater than the length of its inner bottom surface, so that the track ring 23 forms an inverted trapezoidal ring, enabling the stair-climbing transport robot to move on non-planar structures, especially stair structures.

[0043] Further, see Figure 2 and Figure 3 The track assembly 2 also includes a motor 24 and a connecting plate 25. The end of each first roller shaft 21 near the lifting assembly 3 extends into the interior of the vehicle body 1 and is coaxially connected to the shaft of a motor 24. The end of each second roller shaft 22 near the lifting assembly 3 is rotatably connected to one end of a connecting plate 25. The other end of each connecting plate 25 is connected to the side wall of the vehicle body 1. At the same time, each motor 24 is controlled to do work to drive each first roller shaft 21 to rotate around its own axis, thereby driving the track ring 23 to rotate around its axis, and thus driving the vehicle body 1 to move.

[0044] Further, see Figure 2 and Figure 3 The track assembly 2 also includes an external toothed ring 26. At least one external toothed ring 26 is fitted onto the outer side wall of each first roller shaft 21 and the outer side wall of each second roller shaft 22. The inner wall of the track ring 23 is provided with teeth that are adapted to each external toothed ring 26. Each external toothed ring 26 is toothed into the inner wall of the track ring 23 to ensure that the track ring 23 will not slip during the rotation of each first roller shaft 21 around its own axis.

[0045] In this embodiment, each motor 24 of the two track assemblies 2 is controlled to perform work, which drives the two track rings 23 to rotate around their own axes. When the two track rings 23 rotate in the same direction and at the same frequency, the stair-climbing transport robot can move in a straight line. When the two track rings 23 rotate in the same direction but at different frequencies, the stair-climbing transport robot can turn during movement. When the two track rings 23 rotate in opposite directions but at the same frequency, the stair-climbing transport robot can turn in place. In this way, the stair-climbing transport robot can move in a relatively complex environment.

[0046] Example 3

[0047] To make the stair-climbing transport robot more convenient to use, based on the above embodiments, see [link to previous section]. Figure 2 and Figure 3 The stair-climbing transport robot also includes a power supply unit (24 components).

[0048] Among them, see Figure 2 and Figure 3 The power supply mechanism 24 includes a charging pile 41 and a battery 42 installed inside the vehicle body 1. The charging pile 41 has a flat support plate 411 and a baffle 412 standing on one side of the support plate 411. The baffle 412 has a charging socket 413 on the side adjacent to the support plate 411. The side wall of the vehicle body 1 that moves to one end has a charging connector 414 that is connected to the battery 42 and adapted to the charging socket 413. The charging connector 414 is inserted into the charging socket 413 to charge the battery 42 and to supply power to the various electrical devices of the stair climbing transport robot through the battery 42.

[0049] Further, see Figure 2 and Figure 3 The stair-climbing transport robot also includes a cargo box 5 mounted on the vehicle body 1. The cargo box 5 has a hollow cavity 51. The top of the cargo box 5 is connected to the cavity 51 and a lid 52 is hinged to it. The cavity 51 of the cargo box 5 is used to hold items, and the lid 52 can prevent items from falling out of the cargo box 5 during the stair-climbing transport process.

[0050] Further, see Figure 2 and Figure 3 The stair-climbing transport robot also includes a human-computer interaction device 6. The human-computer interaction device 6 is equipped with a touch screen 61 and a speaker 62 installed on the top of the cargo box 5. The touch screen 61 is used to display icons or text, and the operator can input commands to the stair-climbing transport robot by touching the displayed icons or text on the touch screen 61. The speaker 62 is used to broadcast voice information.

[0051] In this embodiment, the stair-climbing transport robot is equipped with a charging station 41, which allows it to automatically move to the charging station 41 to recharge when its battery is low. It also has a cargo box 5 to hold the items to be transported, ensuring that the items will not fall out of the cargo box 5 during transport. Furthermore, the cargo box 5 is equipped with a touchscreen 61 and a speaker 62, allowing operators to input commands to the robot while simultaneously displaying images or text information and broadcasting voice messages via the touchscreen 61. This improves the ease of use of the stair-climbing transport robot.

[0052] Example 4

[0053] To adapt the stair-climbing transport robot to different application scenarios, based on the above embodiments, see [link to previous document]. Figure 2 and Figure 3 The stair-climbing transport robot also includes an information collection unit.

[0054] Among them, see Figure 2 and Figure 3 The information acquisition unit 7 is equipped with a pressure sensor 71, an infrared sensor 72, a lidar 73, and a depth camera 74.

[0055] Further, see Figure 2 and Figure 3 At least one pressure sensor 71 is installed between the cargo box 5 and the vehicle body 1. By analyzing the values ​​detected by the pressure sensor 71, the weight of the items in the cargo box 5 can be determined. This allows the operator to be reminded of the upper limit of the load capacity set by the stair-climbing transport robot, so as to avoid the stair-climbing transport robot being damaged due to overloading or affecting its service life.

[0056] Further, see Figure 2 and Figure 3 At least one infrared sensor 72 is provided at both ends of the bottom surface of the vehicle body 1 in the direction of movement. The infrared sensor 72 is used to measure the distance from the bottom surface of the vehicle body 1 to the ground or step plane. By calculating and analyzing the data detected by each infrared sensor 72, the position of the vehicle body 1 during the movement process can be known, and then the extension length of the movable end of the telescopic component 31 can be adjusted according to the preset parameters.

[0057] Further, see Figure 2 and Figure 3 The lidar 73 is mounted on the cargo box 5. The lidar 73 emits a laser and measures the time it takes for the reflected light to return. In this way, it measures the three-dimensional data of the surrounding environment. Then, the algorithm processes the data to generate a high-precision three-dimensional point cloud map, which is used for SLAM (Simultaneous Localization and Mapping) to achieve accurate autonomous navigation.

[0058] Further, see Figure 2 and Figure 3 The real-sensing depth camera 74 is mounted on the side wall of the cargo box 5 near one end of the lifting component 3. It measures the depth information of the scene through infrared or other technologies, and generates a more detailed three-dimensional cloud point map, depth map and color image in front, providing three-dimensional environmental information to assist SLAM in achieving autonomous navigation.

[0059] In this embodiment, the weight of the transported item is determined by the information obtained from the pressure sensor 71, and the operator is alerted to avoid the stair-climbing transport robot. The robot's position, location, and surrounding environment are determined by the information obtained from the infrared sensor 72, lidar 73, and real-sensing depth camera 74. Based on this data, the stair-climbing transport robot performs different actions, including automatic navigation, obstacle avoidance, and climbing stairs, so that the stair-climbing transport robot can adapt to different environments.

[0060] Example 5

[0061] In order to achieve intelligent control of the stair-climbing transport robot, the stair-climbing transport robot in the above embodiment also includes a central control mechanism located on the cargo box.

[0062] The central control mechanism is electrically connected to the servo motor 311, the motor 24, the touch screen 61, the speaker 62, the pressure sensor 71, the infrared sensor 72, the lidar 73, and the depth camera 74. The central control mechanism has several control commands pre-stored. The central control mechanism receives signals from the touch screen 61, the pressure sensor 71, the infrared sensor 72, the lidar 73, and the depth camera 74, and matches the corresponding control commands to control the servo motor 311 and each motor 24 to perform work, control the touch screen 61 to display information, and control the speaker 62 to broadcast information.

[0063] It should be noted that this embodiment focuses on the control principle of the central control mechanism. The specific structure of the central control mechanism is not the focus of this embodiment and is existing technology. The installation location or area of ​​the central control mechanism has been given in this embodiment and the accompanying drawings, and the specific structure of the central control mechanism will not be described in detail again.

[0064] Similarly, this embodiment focuses on the working principle of the servo motor 311, motor 24, touchscreen 61, speaker 62, pressure sensor 71, infrared sensor 72, lidar 73, and depth camera 74. The specific structure of the servo motor 311, motor 24, touchscreen 61, speaker 62, pressure sensor 71, infrared sensor 72, lidar 73, and depth camera 74 is not the focus of this embodiment and is existing technology. This embodiment and the accompanying drawings have shown the installation position or area of ​​the servo motor 311, motor 24, touchscreen 61, speaker 62, pressure sensor 71, infrared sensor 72, lidar 73, and depth camera 74, and the specific structure of the servo motor 311, motor 24, touchscreen 61, speaker 62, pressure sensor 71, infrared sensor 72, lidar 73, and depth camera 74 will not be described in detail.

[0065] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this application; the dimensions of the drawings are not related to the specific physical object, and the physical object dimensions can be arbitrarily changed.

Claims

1. A stair climbing transport robot characterized by, The utility model relates to a kind of climbing stairs transport robot, including: Vehicle body; Two groups are respectively arranged in the vehicle body and move to two sides Track assembly, the top of two track assemblies mutually close side is connected with the side wall of the vehicle body, the bottom surface of each track assembly is beyond the bottom surface of the vehicle body by preset distance; Lifting assembly is arranged in the vehicle body and moves to one end, including telescopic piece arranged in the vehicle body and at least one mobile wheel suspended under the vehicle body, each mobile wheel is located between two track assemblies;Telescopic piece includes steering gear arranged in vehicle body, the bottom surface of the vehicle body is provided with opening, the working end of the steering gear is connected with one end of support arm, the other end of the support arm is extended to the bottom surface of the vehicle body through opening and is connected with the middle part of a round bar vertically, the side wall of the round bar is sleeved with at least two mobile wheels, the axis of the round bar is perpendicular to the moving direction of the vehicle body; The active end of telescopic piece is extended to the bottom of the vehicle body, and is connected with each mobile wheel, drives the active end of telescopic piece to retract or extend in the direction of the mobile wheel away from or close to the vehicle body, to change the distance of each mobile wheel to the bottom surface of the vehicle body.

2. The stair climbing transport robot of claim 1, wherein, The track assembly includes at least two first rollers and at least two second rollers arranged in parallel and linearly, and a track ring sleeved outside each first roller and each second roller;The first roller supports the inner top surface of the track ring, and the second roller supports the inner bottom surface of the track ring, and the length of the inner top surface of the track ring is greater than that of the inner bottom surface, so that the track ring forms an inverted trapezoidal ring.

3. The stair climbing transport robot of claim 2, wherein, Each first roller is coaxially connected with the rotating shaft of a motor by penetrating into the inside of the vehicle body, and each second roller is rotatably connected with one end of a connecting plate, and the other end of each connecting plate is connected with the side wall of the vehicle body.

4. The stair climbing transport robot of claim 3, wherein, The outer side arm of each first roller and the outer side wall of each second roller are sleeved with at least one outer gear ring, the inner wall of the track ring is provided with a tooth pattern matched with the tooth pattern of each outer gear ring, and each outer gear ring is in gear connection with the tooth pattern of the track ring.

5. The stair climbing transport robot of claim 4, wherein, It also includes a power supply mechanism, the power supply mechanism is provided with a charging pile and a battery arranged in the inside of the vehicle body;The charging pile is provided with a flat support plate and a baffle standing on one side of the support plate, the baffle is provided with a charging socket adjacent to one side of the support plate, and the side wall of the vehicle body moving to one end is provided with a charging connector connected with the battery and matched with the charging socket, the charging connector is inserted into the charging socket to charge the battery.

6. The stair climbing transport robot of claim 5, wherein, The climbing stairs transport robot also includes a load box arranged on the vehicle body, the load box is provided with a hollow cavity, and the top of the load box is connected with the cavity and hinged with a box cover.

7. The stair climbing transport robot of claim 6, wherein, The climbing stairs transport robot also includes a human-computer interaction device, the human-computer interaction device is provided with a touch screen and a loudspeaker arranged on the top of the load box, the touch screen is used for displaying icon or text information and receiving external touch operation, and the loudspeaker is used for broadcasting voice information.

8. The stair climbing transport robot of claim 7, wherein, The information acquisition mechanism comprises a pressure sensor arranged between the object box and the vehicle body, an infrared sensor arranged on the bottom surface of the vehicle body, a laser radar arranged on the top surface of the object box, and a real-sense depth camera arranged on the side wall of the object box adjacent to one end of the lifting assembly, and the pressure sensor, the infrared sensor, the laser radar and the real-sense depth camera are used to acquire information of the environment where the vehicle body is located.

9. The stair climbing transport robot of claim 8, wherein, The central control mechanism is electrically connected with the steering engine, the motor, the touchable screen, the speaker, the pressure sensor, the infrared sensor, the laser radar and the real-sense depth camera respectively, and a plurality of control instructions are pre-stored in the central control mechanism. The central control mechanism receives signals sent from the touchable screen, the pressure sensor, the infrared sensor, the laser radar and the real-sense depth camera, and matches corresponding control instructions to control the steering engine and each motor to work, control the touchable screen to display information, and control the speaker to broadcast information respectively.

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