Stair climbing device

Abstract

The utility model provides a stair climbing device. The stair climbing device comprises a carrying platform, a plurality of first adjustable telescopic mechanisms, a plurality of walking wheels, a rack belt and a control module. The multiple first adjustable telescopic mechanisms are vertically arranged at the bottom of the object carrying platform, and each first adjustable telescopic mechanism is provided with a first telescopic part which can be adjusted in the vertical direction. Each walking wheel is rotationally arranged at the lower end of the corresponding first telescopic part. And a plurality of uniformly distributed wheel teeth are arranged in the circumferential direction of each walking wheel. The rack belt is laid on the stairs, and tooth grooves meshed with the gear teeth are formed in the rack belt. The control module is used for detecting the height of the object carrying platform relative to the floor ground where the object carrying platform is located and the levelness of the object carrying platform and controlling the multiple first telescopic parts to conduct telescopic adjustment in the vertical direction according to the height and the levelness. The stair climbing device has the advantages of being stable in operation, high in carrying capacity, simple in structure, low in cost and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of climbing and lifting applications, in particular to a stair climbing device. Background Art

[0002] With the progress of society, new buildings are generally equipped with escalators or elevators, which bring great convenience to people going up and down stairs and carrying items. However, due to various restrictions, a large part of residential buildings in old urban areas cannot be equipped with escalators or elevators. When people need to carry luggage and other items upstairs, relying on manual labor is not only laborious, but also poses great safety hazards. Especially for the elderly or disabled, it is not convenient for them to climb stairs by themselves, and it will be even more difficult if they carry items upstairs.

[0003] At present, there is a stair climbing device on the market, which adopts a crawler design at the bottom and a loading platform at the top. The movement of the crawler drives the loading platform to move synchronously. However, during the climbing process, this stair climbing device cannot automatically adjust the horizontality of the loading platform, so that the loading platform is in an inclined state, which is not conducive to carrying items and leads to weak loading capacity. In addition, the crawler has a weak grip on the inclined stairs and is prone to slipping, resulting in unstable operation. In addition, the crawler has a complex structure and is expensive. Therefore, seeking a stair climbing device with a simple structure, strong loading capacity, stable operation and low cost has become a technical problem that needs to be solved urgently by those skilled in the art.

[0004] The information disclosed in this background technology section is only used to deepen the understanding of the background technology of the present disclosure, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art known to those skilled in the art. Summary of the invention

[0005] In view of the above problems, the present invention is proposed to provide a stair climbing device that overcomes the above problems or at least partially solves the above problems, and has the advantages of smooth operation, strong carrying capacity, simple structure, low cost, etc.

[0006] Specifically, the utility model provides a stair climbing device, including a loading platform, a plurality of first adjustable telescopic mechanisms, a plurality of running wheels, a rack belt and a control module. The plurality of first adjustable telescopic mechanisms are vertically arranged at the bottom of the loading platform, and each of the first adjustable telescopic mechanisms has a first telescopic portion that is adjustable in the vertical direction; each of the running wheels is rotatably arranged at the lower end of a first telescopic portion; each of the running wheels has a plurality of evenly distributed gear teeth in the circumference; the rack belt is laid on the stairs, and the rack belt is provided with tooth grooves that mesh with the gear teeth; the control module is used to detect the height of the loading platform relative to the floor and the horizontality of the loading platform, and control the telescopic adjustment of the plurality of first telescopic portions in the vertical direction according to the height and the horizontality.

[0007] Optionally, the stair climbing device also includes a second adjustable telescopic mechanism directly or indirectly hinged to the rear end of the loading platform; the second adjustable telescopic mechanism has a second telescopic part, and the lower end of the second telescopic part abuts against the corresponding tooth groove of the rack belt; the control module is also used to control the telescopic adjustment of the second telescopic part so that the angle between the second adjustable telescopic mechanism and the vertical line is within a preset value range.

[0008] Optionally, the first adjustable telescopic mechanism is a gas / hydraulic cylinder or a linear motor, and the first telescopic part is the piston rod of the gas / hydraulic cylinder or the telescopic rod of the linear motor; the second adjustable telescopic mechanism is a gas / hydraulic cylinder or a linear motor, and the second telescopic part is the piston rod of the gas / hydraulic cylinder or the telescopic rod of the linear motor; the walking wheel is a spur gear.

[0009] Optionally, the stair climbing device also includes a linear guide rail and a plurality of sliders, the linear guide rail being arranged at the bottom of the loading platform along the travel direction of the loading platform; a plurality of sliders being adjustably arranged on the linear guide rail along the length direction of the linear guide rail, and the bottom of each slider being connected to the first adjustable telescopic mechanism.

[0010] Optionally, anti-slip teeth are arranged on the wall surface of at least one side of each tooth groove.

[0011] Optionally, the control module includes a detection component and a motion analysis component; the detection component includes a digital electronic level arranged on the loading platform for detecting the horizontality of the loading platform and a photoelectric detector arranged on the loading platform for detecting the height of the loading platform relative to the ground of the floor; the motion analysis component is used to control the telescopic adjustment of the multiple first telescopic parts in the vertical direction according to the height and the horizontality.

[0012] Optionally, at least three rows of the first adjustable telescopic mechanisms are arranged along the travel direction of the loading platform, and each row includes two.

[0013] Optionally, the stair climbing device further comprises a plurality of mounting frames, a plurality of motors and a plurality of wheel axles. Each mounting frame is arranged at the lower end of each row of the first adjustable telescopic mechanisms; each motor is arranged on a mounting frame; each wheel axle is connected to a motor and rotates under the drive of the motor; and two running wheels are installed at both ends of each wheel axle through a connecting key.

[0014] The stair climbing device of the utility model adopts the form of meshing between gear teeth and tooth grooves, so that the gear teeth and tooth grooves will not slip, and the operation is stable. Moreover, through the telescopic adjustment of multiple first telescopic parts, the loading platform is always in a horizontal state, which is convenient for carrying objects and has a strong loading capacity. At the same time, compared with the existing crawler-type stair climbing devices, the stair climbing device also has the advantages of simple structure and low cost.

[0015] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figures 1 to 4 Schematic diagram of the working process of the stair climbing device in the embodiment of the present application.

[0017] Figure 5 It is a schematic partial structural diagram of the stair climbing device in the embodiment of the present application.

[0018] Figure 6 It is a schematic structural diagram of the cooperation between the walking wheel and the rack belt of the stair climbing device in the embodiment of the present application.

[0019] In the above figures, 100 is a stair climbing device, 110 is a loading platform, 120 is a first adjustable telescopic mechanism, 121 is a first cylinder, 122 is a first piston rod, 130 is a walking wheel, 131 is a gear tooth, 140 is a rack belt, 141 is a tooth groove, 142 is an anti-slip tooth, 150 is a second adjustable telescopic mechanism, 151 is a second cylinder, 152 is a second piston rod, 161 is a linear guide rail, 162 is a slider, 171 is a digital electronic level, 172 is a photoelectric detector, 173 is a motion analysis component, 181 is a motor, 182 is a wheel axle, and 190 is a power supply component. DETAILED DESCRIPTION

[0020] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second", etc. involved in the present application are used to distinguish the objects described and do not have any order or technical meaning. The terms "connection" and "connection" involved in the present application, unless otherwise specified, include direct and indirect connections (connections).

[0021] Figures 1 to 4 Schematic diagram of the working process of the stair climbing device in the embodiment of the present application, as shown in Figures 1 to 4 As shown, and refer to Figure 5 and Figure 6 The embodiment of the utility model provides a stair climbing device 100, including a loading platform 110, a plurality of first adjustable telescopic mechanisms 120, a plurality of running wheels 130, a rack belt 140 and a control module. The plurality of first adjustable telescopic mechanisms 120 are vertically arranged at the bottom of the loading platform 110, and each first adjustable telescopic mechanism 120 has a first telescopic portion adjustable in the vertical direction. Each running wheel 130 is rotatably arranged at the lower end of a first telescopic portion. Each of the running wheels 130 has a plurality of evenly distributed gear teeth 131 in the circumference. The rack belt 140 is laid on the stairs, and the rack belt 140 is provided with a tooth groove 141 meshing with the gear teeth 131. The control module is used to detect the height of the loading platform 110 relative to the ground of the floor where it is located and the horizontality of the loading platform 110, and control the telescopic adjustment of the plurality of first telescopic portions in the vertical direction according to the height and the horizontality.

[0022] In the stair climbing device 100 of the embodiment of the utility model, the working process of stair climbing is as follows: first, the rack belt 140 is laid on the stairs, and then the running wheel 130 rotates, and the gear teeth 131 of the running wheel 130 cooperate with the tooth grooves 141 on the rack belt 140, and move upward and forward along the stairs, while driving the loading platform 110 to move synchronously. The control module controls the multiple first telescopic parts to telescope and adjust in the vertical direction, so that the loading platform 110 always maintains a horizontal state.

[0023] The stair climbing device 100 of the utility model embodiment adopts the form of meshing of the gear 131 and the tooth groove 141, so that the gear 131 and the tooth groove 141 will not slip, and the operation is stable, and through the telescopic adjustment of the multiple first telescopic parts, the loading platform 110 is always in a horizontal state, which is convenient for carrying objects and has a strong loading capacity. At the same time, compared with the existing crawler type stair climbing device, the stair climbing device 100 also has the advantages of simple structure and low cost.

[0024] In some embodiments of the present invention, Figures 1 to 4 As shown, the first adjustable telescopic mechanism 120 is a first hydraulic cylinder. The first hydraulic cylinder is mainly composed of a first cylinder barrel 121, a first piston rod 122, a piston, a sealing guide sleeve, a filler (inert gas or oil-gas mixture), an in-cylinder control element, an out-cylinder control element and a joint. A hydraulic cylinder is a cylindrical metal device that guides a piston rod to perform linear reciprocating motion along the axis of the cylinder barrel. The first telescopic part of the first adjustable telescopic mechanism 120 is the first piston rod 122 of the first hydraulic cylinder. The hydraulic cylinder has the advantages of simple structure, easy installation and maintenance, rapid action, fast response, and ability to withstand large loads, and can meet the use of the stair climbing device 100.

[0025] In some embodiments of the utility model, the first adjustable telescopic mechanism 120 is a first pneumatic cylinder. The first pneumatic cylinder is mainly composed of a first pneumatic cylinder barrel, a first pneumatic piston rod, a piston, a sealing guide sleeve, a filler (inert gas), an in-cylinder control element, an out-of-cylinder control element and a joint. The pneumatic cylinder is a cylindrical metal device that guides the first pneumatic piston rod to perform linear reciprocating motion along the axis of the first pneumatic cylinder barrel. The first telescopic part of the first adjustable telescopic mechanism 120 is the first pneumatic piston rod of the first pneumatic cylinder. The pneumatic cylinder has the advantages of simple structure, easy installation and maintenance, rapid action, fast response, and ability to withstand large loads, which can meet the use of the stair climbing device 100.

[0026] In some other embodiments of the utility model, the first adjustable telescopic mechanism 120 can also be a first linear motor. A linear motor is a device that directly converts electrical energy into linear motion using the principle of electromagnetic action. The first linear motor includes a first motor cylinder, a first telescopic rod, and a magnetic circuit, etc. The first telescopic rod can move telescopically in the motor cylinder. The first telescopic part of the first adjustable telescopic mechanism 120 is the first telescopic rod of the first linear motor. A linear motor has the advantages of simple structure, high acceleration, and easy adjustment and control.

[0027] In some embodiments of the present invention, Figures 1 to 6As shown, the travel wheel 130 is a spur gear, wherein the gear teeth 131 are radially and evenly arranged on the wheel rim, and the top thickness of the gear teeth 131 is zero, that is, the top of the gear teeth 131 is a straight line, or a gear tooth line. The travel wheel 130 is made of gray cast iron. A circular hole is provided in the middle of the travel wheel 130, and a plurality of first grooves extending in the radial direction are provided on the side wall of the circular hole, and the plurality of first grooves are arranged in the circumferential direction.

[0028] In some embodiments of the present invention, Figures 1 to 4 as well as Figure 6 As shown, the tooth groove 141 is a group of parallel grooves, the groove opening is narrow, and the cross section is an inverted isosceles triangle. The groove lines (the bottom of the grooves) are parallel to each other, and the spacing between adjacent groove lines is equal to the spacing between adjacent tooth lines of the running wheel 130. The tooth groove 141 is made of brass material and has high wear resistance.

[0029] In some embodiments of the present invention, Figure 6 As shown, at least one side of each tooth groove 141 is provided with anti-skid teeth 142. In this embodiment, since the anti-skid groove is provided on the wall surface of the tooth groove 141, it can prevent the gear teeth 131 from slipping during the meshing process with the tooth groove 141, so that the meshing of the gear teeth 131 with the tooth groove 141 is more reliable. Preferably, the wall surfaces on both sides of each tooth groove 141 are provided with anti-skid teeth 142, so that the anti-skid effect is better.

[0030] In some embodiments of the present invention, Figures 1 to 4 As shown, the loading platform 110 is a mechanism for carrying articles, and is made of light steel material. The loading platform 110 is a box-shaped structure with an upward opening, and a receiving space is formed inside for carrying articles. The loading platform 110 may also have a box cover structure that can be opened and closed at the opening to prevent articles from falling.

[0031] In some embodiments of the present invention, Figures 1 to 4 As shown, the stair climbing device 100 further includes a second adjustable telescopic mechanism 150, which is directly or indirectly hinged to the rear end of the loading platform 110. The second adjustable telescopic mechanism 150 has a second telescopic portion, and the lower end of the second telescopic portion abuts against the corresponding tooth groove 141 of the rack belt 140. The control module is also used to control the telescopic adjustment of the second telescopic portion so that the angle between the second adjustable telescopic mechanism 150 and the vertical line is within a preset value range.

[0032] Due to the inclined setting of the stairs, the stair climbing device 100 has the risk of tilting backwards when climbing up the stairs. The second adjustable telescopic mechanism 150 provided in this embodiment can adjust the length of the second telescopic part in real time, so that the lower end of the second telescopic part is always in contact with the corresponding tooth groove 141 of the rack belt 140, thereby providing good support for the stair climbing device 100, thereby preventing the stair climbing device 100 from tilting backwards. For example, the preset value is 10° to 20°, preferably 15°. Within the preset value range, the support effect of the second adjustable telescopic mechanism 150 is optimal.

[0033] In some embodiments of the present invention, Figures 1 to 4 As shown, the second adjustable telescopic mechanism 150 is a second hydraulic cylinder. The second hydraulic cylinder is mainly composed of a second cylinder barrel 151, a second piston rod 152, etc. The remaining components and working principles are the same as those of the first hydraulic cylinder in the above embodiment, and will not be repeated.

[0034] In some embodiments of the present invention, the second adjustable telescopic mechanism 150 is a second pneumatic cylinder. The second pneumatic cylinder is mainly composed of a second pneumatic cylinder barrel, a second pneumatic piston rod, etc. The remaining components and working principles are the same as those of the first hydraulic cylinder in the above embodiment, and will not be repeated.

[0035] In some other embodiments of the utility model, the second adjustable telescopic mechanism 150 can also be a second linear motor. The second linear motor is mainly composed of a second motor cylinder, a second telescopic rod, etc. The remaining components and working principles are the same as the first linear motor in the above embodiment, and will not be repeated.

[0036] In some embodiments of the present invention, Figures 1 to 4 As shown, the stair climbing device 100 also includes a linear guide rail 161 and a plurality of sliders 162. The linear guide rail 161 is arranged at the bottom of the loading platform 110 along the travel direction of the loading platform 110. The plurality of sliders 162 are adjustably arranged on the linear guide rail 161 along the length direction of the linear guide rail 161, and the bottom of each slider 162 is connected to a first adjustable telescopic mechanism 120. The linear guide rail 161 is made of 55# steel, which supports the loading platform 110 and guides the sliders 162. The sliders 162 are made of carbon steel material after quenching and tempering.

[0037] In order to ensure better meshing between the gear teeth 131 and the tooth grooves 141, and thus ensure the smooth operation of the stair climbing device 100, during operation, each first adjustable telescopic mechanism 120 is required to be located on a step. However, the widths of the steps of different stairs are not equal. In order to solve the above problem, in this embodiment, each first adjustable telescopic mechanism 120 can be adjusted along the length direction of the linear guide 161 through a slider 162, thereby ensuring that each first adjustable telescopic mechanism 120 after adjustment is located on a step. This arrangement allows the stair climbing device 100 to better mesh with the gear teeth 131 and the tooth grooves 141 during the process of climbing stairs, and to run more smoothly. It can also adapt to stairs with steps of various widths, so that the stair climbing device 100 has a wider range of applications.

[0038] In some embodiments of the present invention, Figures 1 to 4 As shown, the control module includes a detection component and a motion analysis component 173. The detection component includes a digital electronic level 171 and a photoelectric detector 172. The digital electronic level 171 is arranged on the loading platform 110 and is used to detect the horizontality of the loading platform 110. The photoelectric detector 172 is arranged on the loading platform 110 and is used to detect the height of the loading platform 110 relative to the ground of the floor. The motion analysis component 173 is used to control the telescopic adjustment of the plurality of first telescopic parts in the vertical direction according to the height and the horizontality.

[0039] In this embodiment, during the operation of the stair climbing device 100, the digital electronic level 171 detects the horizontal information of the loading platform 110 in real time, and the photoelectric detector 172 detects the height information of the loading platform 110 relative to the floor in real time, and sends the detected horizontal information and height information to the motion analysis component 173. The motion analysis component 173 is a data processing unit, which can control the telescopic adjustment of multiple first telescopic parts along the vertical direction according to the received height information and horizontal information, so as to achieve the height adjustment of the loading platform 110 and the adjustment of the table top inclination angle. Among them, the digital electronic level 171 has a base measurement surface, which measures the small inclination angle of the loading platform 110 relative to the horizontal plane based on the balance principle of the capacitive pendulum, and can monitor the horizontal condition of the loading platform 110 in real time.

[0040] In some embodiments of the present invention, Figures 1 to 4 As shown, at least three rows of first adjustable telescopic mechanisms 120 are arranged along the traveling direction of the loading platform 110, and each row includes two

[0041] In this embodiment, since the first adjustable telescopic mechanism 120 is arranged in three rows, the running wheels 130 are also arranged in three rows accordingly, and the gear teeth 131 of the three rows of running wheels 130 mesh with the tooth grooves 141 of the rack belt 140, so that the transmission is more stable and can provide good support for the loading platform 110. Preferably, during the movement of the stair climbing device 100, each row of the first adjustable telescopic mechanism 120 and each row of the running wheels 130 are located on one step.

[0042] In some embodiments of the present invention, Figures 1 to 5 As shown, the stair climbing device 100 also includes a plurality of mounting frames, a plurality of motors 181 and a plurality of axles 182. Each mounting frame is arranged at the lower end of each row of the first adjustable telescopic mechanism 120. Each motor 181 is arranged on a mounting frame. Each axle 182 is connected to a motor 181 and rotates under the drive of the motor 181. Two running wheels 130 are installed at both ends of each axle 182 through a connecting key.

[0043] In this embodiment, the motor 181 drives the axle 182 to rotate, and the axle 182 drives the two running wheels 130 to rotate synchronously through the connecting key, and the gear teeth 131 of the running wheels 130 mesh with the tooth grooves 141, so that the stair climbing device 100 moves forward and upward. The arrangement of the mounting frame, the motor 181 and the axle 182 in this embodiment is simple in structure, easy to assemble, and low in cost.

[0044] In some embodiments of the utility model, the axle 182 is a long straight cylinder made of 45 steel and manufactured through an appropriate heat treatment process. The running wheel 130 is coaxially arranged with the axle 182. A plurality of second grooves extending in the radial direction are arranged on the circumferential walls at both ends of the axle 182, and the plurality of second grooves are arranged circumferentially. The two ends of the axle 182 are respectively inserted into the circular holes of the running wheel 130, and each first groove corresponds to a second groove one by one, and connecting keys are installed in the first groove and the second groove to limit the rotation of the running wheel 130 relative to the axle 182. Preferably, the diameter of the circular hole of the running wheel 130 is slightly larger than the diameter of the axle 182, so as to facilitate the insertion of the axle 182 and the installation of the connecting key.

[0045] In some embodiments of the present invention, Figure 5 As shown, the motor 181 is a miniature dual-output shaft three-phase asynchronous motor, that is, both ends of the motor 181 have output shafts, and the output shafts at both ends can achieve synchronous output. It is made of a new rare earth permanent magnet material. The output shaft of the motor 181 is installed and fixed at the center position of the axle 182, and the axes of the two are kept coincident. The motor 181 can achieve synchronous output of the axles 182 on both sides through the output shafts on both sides.

[0046] In some alternative embodiments of the present invention, the motor 181 is a single output shaft motor, a first transmission gear is disposed on the output shaft of the motor 181, a second transmission gear is disposed in the middle of the axle 182, and the first transmission gear meshes with the second transmission gear. The output shaft of the motor 181 rotates to sequentially drive the first transmission gear, the second transmission gear and the axle 182 to rotate, thereby driving the travel wheel 130 to rotate.

[0047] In some embodiments of the present invention, Figures 1 to 4 As shown, the stair climbing device 100 further includes a power supply assembly 190 , which is used to provide power to the motor 181 and the control module. The power supply assembly 190 can be disposed on the loading platform 110 .

[0048] Although some preferred embodiments of the utility model have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.

[0049] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of this application and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A stair climbing device, characterized in that: include: Loading platform; A plurality of first adjustable telescopic mechanisms are vertically arranged at the bottom of the loading platform, each of the first adjustable telescopic mechanisms having a first telescopic portion adjustable along a vertical direction; A plurality of running wheels, each of which is rotatably disposed at the lower end of one of the first telescopic parts; each of the running wheels has a plurality of evenly distributed gear teeth in the circumference thereof; A rack belt is laid on the stairs, and the rack belt is provided with tooth grooves meshing with the gear teeth; The control module is used to detect the height of the loading platform relative to the floor and the horizontality of the loading platform, and control the first telescopic parts to telescope and adjust in the vertical direction according to the height and the horizontality.

2. The stair climbing device according to claim 1, characterized in that: It also includes a second adjustable telescopic mechanism directly or indirectly hinged to the rear end of the loading platform; the second adjustable telescopic mechanism has a second telescopic portion, and the lower end of the second telescopic portion abuts against the corresponding tooth groove of the rack belt; The control module is further used to control the telescopic adjustment of the second telescopic portion so that the angle between the second adjustable telescopic mechanism and the vertical line is within a preset value range.

3. The stair climbing device according to claim 2, characterized in that: The first adjustable telescopic mechanism is a gas / hydraulic cylinder or a linear motor, and the first telescopic part is a piston rod of the gas / hydraulic cylinder or a telescopic rod of the linear motor; The second adjustable telescopic mechanism is a gas / hydraulic cylinder or a linear motor, and the second telescopic part is a piston rod of the gas / hydraulic cylinder or a telescopic rod of the linear motor; The traveling wheel is a spur gear.

4. The stair climbing device according to claim 1, characterized in that: Also includes: A linear guide rail is arranged at the bottom of the loading platform along the traveling direction of the loading platform; A plurality of sliders are adjustably arranged on the linear guide rail along the length direction of the linear guide rail, and the bottom of each slider is connected to the first adjustable telescopic mechanism.

5. The stair climbing device according to claim 1, characterized in that: Anti-slip teeth are arranged on the wall surface of at least one side of each tooth groove.

6. The stair climbing device according to claim 1, characterized in that: The control module comprises: A detection component, comprising a digital electronic level disposed on the loading platform for detecting the horizontality of the loading platform and a photoelectric detector disposed on the loading platform for detecting the height of the loading platform relative to the floor on which it is located; A motion analysis component is used to control the telescopic adjustment of the plurality of first telescopic parts in the vertical direction according to the height and the horizontality.

7. The stair climbing device according to claim 1, characterized in that: At least three rows of the first adjustable telescopic mechanisms are arranged along the traveling direction of the loading platform, and each row includes two.

8. The stair climbing device according to claim 7, characterized in that: Also includes: A plurality of mounting frames, each of the mounting frames being arranged at the lower end of each row of the first adjustable telescopic mechanisms; A plurality of motors, each motor being disposed on a mounting frame; Multiple wheel axles, each wheel axle is connected to one of the motors and rotates driven by the motor; two running wheels are installed at both ends of each wheel axle through a connecting key.

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