Electric stair climbing machine

Abstract

The invention provides an electric stair-climbing machine, and belongs to the technical field of electric stair-climbing machines, the electric stair-climbing machine comprises a fixing plate, a pull rod, moving wheels, a stair-climbing assembly and a balance assembly, the fixing plate is of a flat plate structure, and the side wall of the fixing plate is provided with a fixing assembly used for fixing goods; the pull rod is arranged on one side of the fixing plate and used for stabilizing the stair climbing machine. The two moving wheels are arranged on the side, away from the pull rod, of the fixing plate through bearings correspondingly. The stair climbing assemblies are arranged in the two moving wheels, and the stair climbing assemblies and the moving wheels are in linkage rotation through linkage assemblies. The balance assembly is arranged at the bottom of the fixing plate, and the top of the balance assembly is fixed to the center of the bottom of the fixing plate. The problems that an electric stair climbing machine is prone to inclination and poor in safety in the using process can be solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric stair-climbing machines, and more particularly, relates to an electric stair-climbing machine. Background Art

[0002] An electric stair-climbing machine is a device used to carry items, especially heavy objects, up or down stairs. With the increasing requirements for the efficiency and safety of handling operations in society, traditional manual handling methods are difficult to meet the needs of various scenarios such as modern logistics, construction sites, and home relocations. Electric stair-climbing machines have emerged as a handling tool integrating automation, intelligence, and user-friendly design, and are widely used in fields such as logistics, moving, elderly care, and hospitals.

[0003] In traditional handling processes, handlers need to manually carry items up or down stairs step by step. Especially on stairs, the labor intensity is high and safety accidents are prone to occur. As the height of buildings increases, the difficulty of manual handling gradually increases, which has given rise to the demand for electric stair-climbing machines. Electric stair-climbing machines were initially developed to solve the problem of handling heavy objects in a stair environment. They use an electric drive method, which can reduce the manual labor intensity and improve the handling efficiency. With the progress of technology, the design of electric stair-climbing machines pays more attention to being lightweight, intelligent, and safe, and has gradually become a standard device in handling operations.

[0004] An electric stair-climbing machine generally consists of an electric drive device, a chain or gear drive system, stair-climbing tracks or wheels, a control system, etc. The device drives the tracks or wheels through an electric motor to make it climb up or down the stairs. The drive method of an electric stair-climbing machine usually uses a battery to provide power, and the control system enables the operator to control the climbing speed, direction, and stop.

[0005] An electric stair-climbing machine is prone to tilting during use, and has poor safety. Summary of the Invention

[0006] In view of this, the present invention provides an electric stair-climbing machine, which can solve the problems that an electric stair-climbing machine is prone to tilting during use and has poor safety.

[0007] The present invention is implemented as follows: The present invention provides an electric stair-climbing machine, which includes a fixed plate, a pull rod, moving wheels, a stair-climbing assembly, and a balance assembly. The fixed plate is a flat plate structure, and a fixing assembly is arranged at its side wall position for fixing goods. The pull rod is arranged on one side of the fixed plate for stabilizing the stair-climbing machine. The moving wheels include two, which are respectively arranged at a position on the side of the fixed plate away from the pull rod through bearings. The stair-climbing assembly is arranged inside the two moving wheels, and the stair-climbing assembly and the moving wheels are rotationally linked through a linkage assembly. The balance assembly is arranged at the bottom of the fixed plate, and the top of the balance assembly is fixed at the center position of the bottom of the fixed plate to ensure the stability of the movement of the stair-climbing machine.

[0008] The beneficial effects of adopting the above improvement scheme are as follows: The fixed plate, as the basic support structure of the stair-climbing machine, is usually in the form of a flat plate and can bear and stably fix goods. A fixing assembly is provided at its side wall position to ensure that the goods will not move or slide during the stair-climbing process, increasing safety. The design of the fixed plate not only provides bearing capacity but also provides a certain degree of stability for the stair-climbing machine during stair-climbing. The pull rod is arranged on one side of the fixed plate and plays a role in enhancing the stability of the stair-climbing machine. The function of the pull rod is to prevent the equipment from tilting or tipping over during the stair-climbing process and ensure that the equipment can move forward or go upstairs smoothly. The pull rod may be combined with other support components in structure to jointly provide overall stability and reduce the risk caused by tilting or imbalance. The moving wheels include two wheels, which are respectively installed at the far end of the fixed plate through bearings. These wheels enable the stair-climbing machine to move smoothly along the stairs. The design of the wheels should ensure that they can adapt to different slopes and shapes of the stairs and usually have good rolling performance and bearing capacity. The structure of the wheels needs to be strong enough to bear the weight of the equipment and goods and maintain stable operation. The stair-climbing assembly is arranged inside the moving wheels and is rotationally linked with the wheels through a linkage assembly. The function of this assembly is to push the stair-climbing machine to climb up or down the stairs along the stairs through a special mechanism while the moving wheels are rolling. Its linkage design enables the stair-climbing machine to climb up and down the stairs stably in the vertical direction and avoid sliding or instability. The balance assembly is located at the bottom of the fixed plate, and the top end is fixed at the center position of the bottom of the fixed plate. Its function is to balance the center of gravity of the stair-climbing machine and ensure that the equipment will not tilt during the stair-climbing process. The balance assembly can effectively distribute the weight of the equipment and goods and enhance the stability of the entire system during stair-climbing. Especially when going up and down the stairs, the balance assembly can reduce the risk caused by unstable center of gravity and ensure the smoothness and safety of the stair-climbing machine during the stair-climbing process. Through the cooperation of these structures, the electric stair-climbing machine can efficiently and stably complete the stair-climbing task, adapt to different stair environments, and ensure the safety of goods and equipment.

[0009] On the basis of the above technical solution, an electric stair-climbing machine of the present invention can also be improved as follows: Among them, the stair-climbing assembly includes a connecting shaft, an elliptical wheel, and stair-climbing wheels. There are two stair-climbing wheels, which are fixedly connected by the connecting shaft. The connecting shaft is a linear structure, such that the included angle between the two stair-climbing wheels is 180°. The connecting shaft is sleeved on the elliptical wheel, and one focus of the elliptical wheel is connected to the linkage assembly, such that when the two elliptical wheels connected by the connecting shaft rotate to the stair-climbing point, the distance between the stair-climbing assembly and the plane where the fixed plate and the connection point of the pull rod are located is less than the distance between the moving wheel and the plane where the fixed plate and the connection point of the pull rod are located, so as to enable the force exerted on the stairs by the rotation of the stair-climbing assembly to drive the electric stair-climbing machine to move upward along the stairs.

[0010] The beneficial effects of adopting the above improvement scheme are as follows: The stair-climbing assembly includes a connecting shaft, an elliptical wheel, and stair-climbing wheels. The stair-climbing wheels are fixed together by the connecting shaft. The connecting shaft is a linear structure, such that the included angle between the two stair-climbing wheels is 180°. The elliptical wheel is linked with the moving wheel through the linkage assembly, and can effectively drive the electric stair-climbing machine to move upward along the stairs when rotating. The design of the elliptical wheel makes the force transmission more stable, enabling the device to rise smoothly on the stairs.

[0011] Further, the linkage assembly includes a linkage shaft and meshing gears. The linkage shaft connects the bearing and the elliptical wheel, and the linkage shaft and the elliptical wheel are connected by the meshing gears. The number of teeth on the outer wall of the meshing gears is less than the number of teeth on the inner wall of the elliptical wheel, and the inner wall of the elliptical wheel is set to be circular.

[0012] The beneficial effects of adopting the above improvement scheme are as follows: The linkage assembly includes a linkage shaft and meshing gears. The linkage shaft connects the bearing and the elliptical wheel and is connected to the elliptical wheel through the meshing gears. The number of teeth on the outer wall of the meshing gears is smaller, and the number of teeth on the inner wall is larger, which helps to provide smooth power transmission and ensure the smooth operation of the stair-climbing assembly.

[0013] Further, the moving wheel includes a lining and a rubber wheel fixed on the outside. The outer wall of the rubber wheel in contact with the stairs is provided with corrugated grooves for enhancing the friction force. The bearing is connected to the motor through a coupling, and the motor is used to drive the bearing to rotate. A spring pressure-reducing layer is provided between the lining and the rubber wheel. The spring pressure-reducing layer is used to adjust the pressure between the moving wheel and the stairs. The spring pressure-reducing layer is a multi-layer structure fixedly connected.

[0014] The beneficial effects of adopting the above improvement scheme are as follows: There are two moving wheels, which are installed on the other side of the fixed plate through bearings, away from the pull rod. The two wheels are internally equipped with a stair-climbing assembly, and the stair-climbing assembly is connected to the moving wheels through the linkage assembly to achieve linkage rotation. The design of the moving wheels enables the electric stair-climbing machine to move smoothly on the stairs.

[0015] The moving wheels are composed of an inner lining and rubber wheels on the outside. Corrugated grooves are provided on the surface of the rubber wheels to enhance the friction with the stairs. The bearing is connected to the motor through a coupling, and the motor drives the bearing to rotate. A spring pressure relief layer is provided between the inner lining and the rubber wheels to help adjust the pressure on the stairs and ensure smooth operation on uneven stairs.

[0016] Further, the fixing component includes a bottom fixing piece and a side wall fixing rope. The bottom fixing piece is inclined and fixed at the bottom position of the fixing plate to prevent the items loaded on the fixing plate from slipping; one end of the side wall fixing rope is tied to one side of the fixing plate, and the other end of the fixing plate is provided with a fixing buckle. By tying the side wall fixing rope and the fixing buckle, it is used to fix the items loaded on the fixing plate.

[0017] The beneficial effects of adopting the above improvement scheme are as follows: The fixing plate is the basic support structure of the entire stair climbing machine and adopts a flat plate design. A fixing component is provided at its side wall position, which is specifically used to fix the goods to ensure that the goods will not slide or fall during transportation.

[0018] The fixing component includes a bottom fixing piece and a side wall fixing rope. The bottom fixing piece is inclined and installed at the bottom of the fixing plate to prevent the goods from slipping; one end of the side wall fixing rope is tied to one side of the fixing plate, and the other end is provided with a fixing buckle to ensure the safety of the goods during transportation.

[0019] Further, the pull rod includes two vertical rods and a horizontal rod fixed between the vertical rods. The vertical rods are welded and fixed to the front end of the fixing plate and are in an inwardly inclined state; the inclination angle of one side vertical rod is greater than that of the other side vertical rod, so that the horizontal rod is located on one side of the fixing plate, which is used to make it more convenient for the operator to use the electric stair climbing machine on a narrow staircase; a friction rubber layer is provided on the horizontal rod.

[0020] The beneficial effects of adopting the above improvement scheme are as follows: The pull rod is located on one side of the fixing plate, and its main function is to improve the stability of the stair climbing machine. Through the support of the pull rod, the stair climbing machine can maintain balance during the stair climbing process and avoid tilting or instability.

[0021] The pull rod includes two vertical rods and a horizontal rod. The vertical rods are welded and fixed to the front end of the fixing plate and are in an inwardly inclined state. The inclination angles of the two vertical rods are different, and the horizontal rod is located close to one side of the fixing plate, which is convenient for the operator to operate on a narrow staircase. Moreover, a friction rubber layer is provided on the horizontal rod to increase the stability of operation.

[0022] Further, the balance component includes a monitoring component and a center-of-gravity moving component. The monitoring component is arranged on both sides of the bottom of the fixed plate. The connecting line between the two monitoring components perpendicularly bisects the center line of the bottom of the fixed plate, and is used to judge the inclination degree of the fixed plate by comparing the height difference between the two monitoring components and the ground. The center-of-gravity moving component includes multiple ones, which are respectively arranged at the bottom of the fixed plate and are used to adjust the center-of-gravity position of the fixed plate by changing the mass, so as to prevent the stair climber from tilting due to the center-of-gravity offset during operation and avoid danger. The monitoring component is a laser rangefinder. The probe of the laser rangefinder extends in the opposite direction perpendicular to the fixed plate and is arranged away from the fixed plate, and is used to monitor the distance between the bottom of the fixed plate and the stair surface.

[0023] Further, the two monitoring components are connected by a comparator. A threshold value is stored in the comparator. When the distance difference monitored by the two monitoring components is less than the threshold value, the center-of-gravity moving component remains stationary and does not move. When the distance difference monitored by the two monitoring components is greater than the threshold value, the center-of-gravity moving component moves to adjust the center of gravity of the fixed plate.

[0024] Further, the threshold value is set according to the width of the fixed plate and the weight of the items carried on the fixed plate, specifically 2 - 5 cm.

[0025] Further, the center-of-gravity moving component includes a track, a weight block and an electromagnetic driver. The track is fixed at the center position of the bottom of the fixed plate by fastening bolts and is arranged in a long strip shape. The central axis of the track is perpendicular to the central axis of the bottom of the fixed plate. The weight block is fixed in the track by the electromagnetic driver. The weight block is used to adjust the center-of-gravity position of the electric stair climber, and the electromagnetic driver is used to drive the weight block to move on the track. The cross sections of the track and the weight block are both arranged in an I-shaped structure and match each other, so that the sliding of the weight block inside the track is more stable to ensure safety.

[0026] The electromagnetic driver adopts the structure of the electromagnetic driver disclosed in the publication number CN107026552A (application number CN201610075175.8).

[0027] The balancing assembly consists of a monitoring assembly and a center-of-gravity shifting assembly. The monitoring assembly is mounted on either side of the bottom of the fixed plate. It uses laser rangefinders to monitor the distance between the fixed plate and the staircase. The difference between the two monitoring assemblies determines the degree of tilt. The center-of-gravity shifting assembly adjusts the center of gravity by adjusting the mass, preventing tilt caused by center-of-gravity shift and ensuring safe operation. The center-of-gravity shifting assembly includes a track, a weight block, and an electromagnetic actuator. It dynamically adjusts the center of gravity based on the width of the fixed plate and the weight of the object, preventing hazards. The monitoring assembly's laser rangefinder accurately measures the inclination of the staircase and the distance between the electric stair climber and the staircase. If the measured difference exceeds a preset threshold, the center-of-gravity shifting assembly adjusts the position to ensure smooth operation. This automatic center-of-gravity adjustment mechanism significantly enhances the stability and safety of the electric stair climber, especially in complex stairways, reducing the risk of tilt. The center-of-gravity shifting assembly includes a track, a weight block, and an electromagnetic actuator. The track is mounted on the bottom of the fixed plate, and the weight block is adjusted by the electromagnetic actuator to adjust the center of gravity of the electric stair climber. This system can automatically adjust the center of gravity according to the load and operating status of the electric stair climber to ensure the stability of the machine, thereby improving safety during use.

[0028] Compared with the prior art, the electric stair climbing machine provided by the present invention has the following beneficial effects: The fixed plate is the foundation of the electric stair climber and features a flat plate structure. Mounting components are installed on its side walls to secure the cargo being transported. This structure prevents the cargo from sliding or accidentally falling during operation. A balancing component is also installed on the bottom of the fixed plate to further enhance the stability of the equipment.

[0029] The pull rod, located on one side of the mounting plate, stabilizes the stair climber. By attaching to the mounting plate, it provides additional support, keeping the stair climber balanced during stair climbing. The pull rod is designed for ease of use, especially in confined stairways, enhancing the stair climber's maneuverability.

[0030] The electric stair climber features two moving wheels, one on the side of the fixed plate away from the pull rod. Each wheel houses a stair climbing assembly. These wheels are connected via a linkage assembly, ensuring synchronized rotation, effectively gripping and pushing the stair. The wheels are covered in a rubber layer with corrugated grooves to enhance friction with the staircase, improving stability and safety.

[0031] The stair-climbing assembly consists of a connecting shaft, an elliptical wheel, and stair-climbing wheels. The stair-climbing wheels are fixed together through the connecting shaft, and an angle of 180° is formed between the two stair-climbing wheels. The structural design of these components enables the electric stair-climbing machine to climb smoothly on the stairs. One focus of the elliptical wheel is connected to the linkage assembly, and it drives the stair-climbing machine to move upward along the stairs through rotational force.

[0032] The linkage assembly consists of a linkage shaft and meshing gears. The linkage shaft connects the bearing and the elliptical wheel, and the meshing gears enable the elliptical wheel to be linked with other components. The number of teeth on the outer wall of the meshing gears is relatively small to ensure that the elliptical wheel can rotate more effectively, thus achieving a smooth stair-climbing motion.

[0033] The core of the balance assembly is the monitoring component and the center-of-gravity moving component. The monitoring component includes a laser rangefinder, which is used to monitor the distance between the bottom of the fixed plate and the stair surface in real time to determine whether the stair-climbing machine maintains balance. The center-of-gravity moving component consists of a track, a weight block, and an electromagnetic driver, which can ensure that the device does not tilt during operation by adjusting the center-of-gravity position of the electric stair-climbing machine. This component can effectively prevent accidents or dangers caused by the offset of the center of gravity. The monitoring component is installed on both sides of the bottom of the fixed plate, and the laser rangefinder is used to monitor the distance difference between the stair-climbing machine and the ground, thereby determining the tilt degree of the device. The center-of-gravity moving component adjusts the center of gravity of the electric stair-climbing machine through the track and the electromagnetic driver, preventing the device from tilting during operation and ensuring safety.

[0034] The fixing assembly consists of a bottom fixing piece and sidewall fixing ropes. The bottom fixing piece is inclined and fixed at the bottom of the fixed plate to prevent the loaded items from slipping. The sidewall fixing ropes are tied through fixing buckles to ensure the stability of the goods.

[0035] The electric stair-climbing machine drives the bearing to rotate through the motor, driving the moving wheels and the stair-climbing assembly to work. The linkage design of the motor and the bearing enables the stair-climbing machine to climb smoothly along the stairs, providing sufficient power support.

[0036] The pull rod consists of two vertical rods and a horizontal rod connected between them. The vertical rods are fixed to the front end of the fixed plate, and the inclination angle is greater than that of the other vertical rod, ensuring that the operator can operate conveniently on the narrow stairs. At the same time, the horizontal rod is covered with a friction rubber layer to increase the friction during operation and prevent slipping.

[0037] To further optimize the safety of the electric stair-climbing machine, the internal design of the moving wheels includes a spring pressure-reducing layer, which is used to adjust the pressure between the moving wheels and the stairs. Through the multi-layer structure of the spring pressure-reducing layer, the pressure caused by gravity can be effectively reduced, thereby improving the adaptability and stability of the device on different stairs. Description of the Drawings

[0038] Figure 1 It is a schematic structural diagram of an electric stair-climbing machine; Figure 2 It is a schematic structural diagram of the center-of-gravity moving component; Figure 3 It is a schematic structural diagram of the moving wheel; Figure 4 It is a schematic structural diagram of the stair-climbing component; In the accompanying drawings, the list of components represented by each reference numeral is as follows: 10. Fixed plate; 11. Fixing component; 20. Pull rod; 30. Moving wheel; 31. Bearing; 40. Stair-climbing component; 41. Linkage component; 42. Connecting shaft; 43. Elliptical wheel; 44. Stair-climbing wheel; 50. Balancing component; 51. Monitoring component; 52. Center-of-gravity moving component; 521. Track; 522. Weight block; 523. Electromagnetic drive. Specific implementation manners

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0040] As Figures 1-4 shown, it is a schematic structural diagram of an electric stair-climbing machine provided by the present invention. In the figure, it includes a fixed plate 10, a pull rod 20, a moving wheel 30, a stair-climbing component 40, and a balancing component 50. The fixed plate 10 is a flat structure, and a fixing component 11 is arranged on its side wall for fixing goods; the pull rod 20 is arranged on one side of the fixed plate 10 for stabilizing the stair-climbing machine; the moving wheel 30 includes two, which are respectively arranged on the side of the fixed plate 10 away from the pull rod 20 through bearings 31; a stair-climbing component 40 is arranged inside the two moving wheels 30, and the stair-climbing component 40 and the moving wheel 30 are rotationally linked through a linkage component 41; a balancing component 50 is arranged at the bottom of the fixed plate 10, and the top of the balancing component 50 is fixed at the center position of the bottom of the fixed plate 10 to ensure the stability of the movement of the stair-climbing machine. Among them, in the above technical solution, the stair-climbing component 40 includes a connecting shaft 42, an elliptical wheel 43, and a stair-climbing wheel 44. The stair-climbing wheel 44 includes two, which are fixedly connected through the connecting shaft 42. The connecting shaft 42 is a straight structure, so that the included angle between the two stair-climbing wheels 44 is 180°; the connecting shaft 42 is sleeved on the elliptical wheel 43, and one focus of the elliptical wheel 43 is connected to the linkage component 41, so that when the two elliptical wheels 43 connected by the connecting shaft 42 rotate to the stair-climbing point, the distance between the plane where the stair-climbing component 40 is connected to the fixed plate 10 and the pull rod 20 is less than the distance between the plane where the moving wheel 30 is connected to the fixed plate 10 and the pull rod 20, which is used to enable the force exerted on the stairs by the rotation of the stair-climbing component 40 to drive the electric stair-climbing machine to move upward along the stairs.

[0041] Furthermore, in the above technical solution, the linkage assembly 41 includes a linkage shaft and a meshing gear. The linkage shaft connects the bearing 31 and the elliptical wheel 43. The linkage shaft and the elliptical wheel 43 are connected through the meshing gear. The number of teeth on the outer wall of the meshing gear is smaller than the number of teeth on the inner wall of the elliptical wheel 43. The inner wall of the elliptical wheel 43 is set to be circular.

[0042] Furthermore, in the above technical solution, the moving wheel 30 includes an inner lining and an outer fixed rubber wheel, and the outer wall of the rubber wheel in contact with the stairs is provided with corrugated grooves for enhancing friction; the bearing 31 is connected to the motor through a coupling, and the motor is used to drive the bearing 31 to rotate; A spring decompression layer is provided between the inner lining and the rubber wheel, and the spring decompression layer is used to adjust the pressure between the moving wheel 30 and the stairs; the spring decompression layer is a multi-layer structure fixedly connected.

[0043] Furthermore, in the above technical solution, the fixing assembly 11 includes a bottom fixing part and a side wall fixing rope. The bottom fixing part is fixed obliquely at the bottom position of the fixing plate 10 to prevent the items loaded on the fixing plate 10 from slipping; one end of the side wall fixing rope is tied to one side of the fixing plate 10, and a fixing buckle is provided at the other end of the fixing plate 10. The side wall fixing rope and the fixing buckle are tied together to fix the items loaded on the fixing plate 10.

[0044] Furthermore, in the above technical solution, the pull rod 20 includes a double vertical rod and a transverse rod fixed between the vertical rods. The vertical rods are welded and fixed to the front end of the fixed plate 10 and are tilted inward. The inclination angle of the vertical rod on one side is greater than the inclination angle of the vertical rod on the other side, so that the transverse rod is located on one side of the fixed plate 10, which is used to make it more convenient for the operator to use the electric stair climber on narrow stairs. A friction rubber layer is provided on the transverse rod.

[0045] Furthermore, in the above technical solution, the balancing assembly 50 includes a monitoring assembly 51 and a center-of-gravity moving assembly 52. The monitoring assembly 51 is arranged at both sides of the bottom of the fixed plate 10. The connecting line between the two monitoring assemblies 51 vertically bisects the bottom center line of the fixed plate 10, and is used to determine the degree of inclination of the fixed plate 10 by comparing the difference in height between the two monitoring assemblies 51 and the ground; the center-of-gravity moving assembly 52 includes a plurality of assemblies, which are respectively arranged at the bottom of the fixed plate 10, and are used to adjust the center of gravity position of the fixed plate 10 by changing the mass, thereby preventing the stair climber from tilting due to the shift in the center of gravity during operation, thereby avoiding danger; The monitoring component 51 is a laser rangefinder. The probe of the laser rangefinder extends in the opposite direction perpendicular to the fixing plate 10 and is set away from the fixing plate 10 to monitor the distance between the bottom of the fixing plate 10 and the stair surface.

[0046] Furthermore, in the above technical solution, the two monitoring components 51 are connected by a comparator, and a threshold value is stored in the comparator. When the distance difference detected by the two monitoring components 51 is less than the threshold value, the center-of-gravity moving component 52 remains stationary and does not move; when the distance difference detected by the two monitoring components 51 is greater than the threshold value, the center-of-gravity moving component 52 moves to adjust the center of gravity of the fixed plate 10.

[0047] Furthermore, in the above technical solution, the threshold value is set according to the width of the fixed plate 10 and the weight of the items carried by the fixed plate 10, specifically 2 - 5 cm.

[0048] Furthermore, in the above technical solution, the center-of-gravity moving component 52 includes a track 521, a weight block 522, and an electromagnetic driver 523. The track 521 is fixed at the central position of the bottom of the fixed plate 10 through fastening bolts and is set to be strip-shaped; the central axis of the track 521 is perpendicular to the central axis of the bottom of the fixed plate 10; the weight block 522 is fixed in the track 521 by the electromagnetic driver 523, and the weight block 522 is used to adjust the center-of-gravity position of the electric stair climber, and the electromagnetic driver 523 is used to drive the weight block 522 to move on the track 521; the cross-sections of the track 521 and the weight block 522 are both set to be I-shaped structures, and the two match each other, making the sliding of the weight block 522 inside the track 521 more stable to ensure safety.

[0049] Embodiment 1: Standard electric stair climber Fixed plate: Made of steel material, with high load-bearing capacity. Designed with anti-slip grooves on the side walls, which can effectively prevent the goods from sliding.

[0050] Pull rod: Equipped with an anti-slip rubber layer to enhance the operation feel. The angle of the pull rod is optimized to ensure that the operator can use it comfortably.

[0051] Moving wheels: Two wheels are equipped with high-strength polyurethane rubber, which can adapt to different types of stairs and avoid sliding caused by insufficient friction.

[0052] Stair-climbing component: Made of high-strength aluminum alloy material, and the stair-climbing wheels are designed to be angled, which can adapt to the slopes of different stairs and ensure smooth movement.

[0053] Linkage component: The linkage shaft and the meshing gears are precision machined, and the gear transmission ratio is set reasonably to ensure the smooth transmission of power.

[0054] Rubber wheels: The surface of the rubber wheels is designed with patterns to enhance the contact friction with the stairs.

[0055] Balancing component: Using a laser sensor in cooperation with an electronic control system to continuously monitor the angle difference between the device and the stairs and automatically adjust the center of gravity.

[0056] Example Two: High-load Electric Stair Climbing Machine Fixed Plate: Made of steel-aluminum alloy composite material, it is light and strong, and can bear higher weights.

[0057] Pull Rod: The structure of the pull rod has been strengthened and is coated with anti-corrosion coating, suitable for more complex environments, such as wet stairs.

[0058] Moving Wheel: Made of hard plastic and rubber composite material, it increases wear resistance and is designed with shock absorption function, suitable for transporting heavy loads.

[0059] Stair Climbing Assembly: Designed with adjustable-angle stair climbing wheels, it can adapt to different types of stairs and can bear heavy loads.

[0060] Linkage Assembly: Adopts an efficient hydraulic system to ensure stable operation even when the load increases.

[0061] Rubber Wheel: The surface of the rubber wheel is in a special corrugated shape, providing stronger friction and preventing slipping.

[0062] Balance Assembly: A dynamic center of gravity adjustment system, controlled by an electric control transmission device, can automatically adjust the center of gravity of the equipment according to the weight of the item to avoid tilting.

[0063] Example Three: Compact Electric Stair Climbing Machine Fixed Plate: Designed to be more compact, suitable for narrow spaces. It is equipped with adjustable support feet at the bottom, which can adapt to the heights of different stairs.

[0064] Pull Rod: The pull rod is foldable, convenient for storage and transportation. Made of lightweight alloy material, ensuring firmness without occupying too much space.

[0065] Moving Wheel: Adopts high-density plastic wheels, ensuring smooth movement even in narrow spaces and equipped with anti-slip design.

[0066] Stair Climbing Assembly: The design of the stair climbing assembly has been optimized, able to adapt to smaller stair gaps, facilitating the operation of the equipment in narrow environments.

[0067] Linkage Assembly: Adopts a low-noise motor and a precision gearbox to ensure minimal noise when used in narrow environments.

[0068] Rubber Wheel: The surface has a micro-concave and convex design, providing stronger grip, suitable for more flat or irregular stairs.

[0069] Balance Assembly: Adopts a dual balance control system to ensure that the equipment can also maintain stability in narrow spaces and avoid tilting. Specifically, the principle of the present invention is: when in use, place the electric stair climber at the bottom of the stairs and ensure that the device is parallel to the stairs. Make sure that the balance component of the device is activated and the device remains stable. Turn on the power switch to ensure that the electric stair climber is in normal working condition. Start the motor and start climbing. Adjust the climbing speed of the electric stair climber as needed to ensure smooth climbing on the stairs. The pull rod can be used to help the operator adjust the stability of the device when necessary, especially on narrow stairs. The device will drive the moving wheels and climbing components through the linkage component to enable the device to climb the stairs steadily. The operator can observe the inclination of the device and ensure that the device remains stable through the balance component. When the electric stair climber reaches the top of the stairs, slow down to ensure a smooth arrival. Stop the motor, turn off the power switch, and complete the handling work.

[0070] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric stair climber, characterized in that, It includes a fixed plate (10), a pull rod (20), moving wheels (30), a stair-climbing assembly (40) and a balance assembly (50). The fixed plate (10) is of a flat plate structure, and a fixing assembly (11) is arranged at its side wall position for fixing goods; the pull rod (20) is arranged on one side of the fixed plate (10) for stabilizing the stair-climbing machine; there are two moving wheels (30), which are respectively arranged at a position on the side of the fixed plate (10) away from the pull rod (20) through bearings (31); the stair-climbing assembly (40) is arranged inside the two moving wheels (30), and the stair-climbing assembly (40) and the moving wheels (30) are linked and rotated through a linkage assembly (41); the balance assembly (50) is arranged at the bottom of the fixed plate (10), and the top of the balance assembly (50) is fixed at the central position of the bottom of the fixed plate (10) to ensure the stability of the movement of the stair-climbing machine.

2. The electric stair climber according to claim 1, wherein The stair-climbing assembly (40) includes a connecting shaft (42), an elliptical wheel (43) and stair-climbing wheels (44). There are two stair-climbing wheels (44), which are fixedly connected through the connecting shaft (42). The connecting shaft (42) is of a straight-line structure, so that the included angle between the two stair-climbing wheels (44) is 180°; the connecting shaft (42) is sleeved on the elliptical wheel (43), and one focus of the elliptical wheel (43) is connected to the linkage assembly (41), so that when the two elliptical wheels (43) connected by the connecting shaft (42) rotate to the stair-climbing point, the distance between the plane where the stair-climbing assembly (40) is connected to the fixed plate (10) and the pull rod (20) and the plane where the moving wheels (30) are connected to the fixed plate (10) and the pull rod (20) is less than the distance between the plane where the moving wheels (30) are connected to the fixed plate (10) and the pull rod (20), which is used to enable the force exerted on the stairs by the rotation of the stair-climbing assembly (40) to drive the electric stair-climbing machine to move upward along the stairs.

3. An electric stair climber according to claim 2, wherein, The linkage assembly (41) includes a linkage shaft and meshing gears. The linkage shaft connects the bearing (31) and the elliptical wheel (43), and the linkage shaft and the elliptical wheel (43) are connected through meshing gears. The number of teeth on the outer wall of the meshing gears is less than the number of teeth on the inner wall of the elliptical wheel (43), and the inner wall of the elliptical wheel (43) is arranged as a circle.

4. The electric stair climber according to claim 3, wherein, The moving wheel (30) includes a lining and a rubber wheel fixed on the outside. The outer wall of the rubber wheel in contact with the stairs is provided with corrugated grooves for enhancing friction; the bearing (31) is connected to a motor through a coupling, and the motor is used to drive the bearing (31) to rotate; A spring pressure-reducing layer is arranged between the lining and the rubber wheel, and the spring pressure-reducing layer is used to adjust the pressure between the moving wheel (30) and the stairs; the spring pressure-reducing layer is a multi-layer structure fixedly connected.

5. An electric stair climber according to claim 4, wherein, The fixed component (11) includes a bottom fixing piece and side wall fixing ropes. The bottom fixing piece is inclined and fixed at the bottom position of the fixing plate (10) to prevent the items loaded on the fixing plate (10) from slipping; one end of the side wall fixing rope is tied to one side of the fixing plate (10), and the other end of the fixing plate (10) is provided with a fixing buckle. By tying the side wall fixing rope with the fixing buckle, it is used to fix the items loaded on the fixing plate (10).

6. An electric stair climber according to claim 5, wherein, The pull rod (20) includes double vertical rods and a horizontal rod fixed between the vertical rods. The vertical rods are welded and fixed to the front end of the fixing plate (10) and are in an inwardly inclined state; the inclination angle of one side vertical rod is greater than that of the other side vertical rod, so that the horizontal rod is located on one side of the fixing plate (10), which is used to make it more convenient for the operator to use the electric stair climber on a narrow staircase; a friction rubber layer is provided on the horizontal rod.

7. The electric stair climber according to claim 6, characterized in that, The balance component (50) includes a monitoring component (51) and a center of gravity moving component (52). The monitoring component (51) is arranged at both sides of the bottom of the fixing plate (10). The connecting line between the two monitoring components (51) vertically bisects the center line of the bottom of the fixing plate (10), and is used to judge the inclination degree of the fixing plate (10) by comparing the height differences between the two monitoring components (51) and the ground; the center of gravity moving component (52) includes a plurality of them, which are respectively arranged at the bottom position of the fixing plate (10), and are used to adjust the center of gravity position of the fixing plate (10) by changing the mass, prevent the stair climber from tilting due to the center of gravity offset during operation, and avoid the occurrence of danger; The monitoring component (51) is a laser rangefinder. The probe of the laser rangefinder extends in the opposite direction perpendicular to the fixing plate (10) and is arranged away from the fixing plate (10) to monitor the distance between the bottom of the fixing plate (10) and the stair surface.

8. The electric stair climber according to claim 7, characterized in that, The two monitoring components (51) are connected by a comparator. A threshold value is stored in the comparator. When the distance difference monitored by the two monitoring components (51) is less than the threshold value, the center of gravity moving component (52) remains stationary and does not move; when the distance difference monitored by the two monitoring components (51) is greater than the threshold value, the center of gravity moving component (52) moves to adjust the center of gravity of the fixing plate (10).

9. The electric stair climber according to claim 8, characterized in that, The threshold value is set according to the width of the fixing plate (10) and the weight of the items carried by the fixing plate (10), specifically 2 - 5 cm.

10. The electric stair climber according to claim 9, characterized in that, The center-of-gravity moving component (52) includes a track (521), a weight block (522), and an electromagnetic driver (523). The track (521) is fixed to the central position at the bottom of the fixing plate (10) by fastening bolts and is arranged in a long strip shape. The central axis of the track (521) is perpendicular to the central axis of the bottom of the fixing plate (10). The weight block (522) is fixed in the track (521) by the electromagnetic driver (523). The weight block (522) is used to adjust the center-of-gravity position of the electric stair climber, and the electromagnetic driver (523) is used to drive the weight block (522) to move on the track (521). The cross-sections of the track (521) and the weight block (522) are both arranged in an I-shaped structure and match each other, making the sliding of the weight block (522) inside the track (521) more stable to ensure safety.

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