Speed-controllable and micro-orientable multi-scene application universal wheel and transportation device

Abstract

The invention discloses a speed-controllable and micro-orientable multi-scene application universal wheel and a transportation device.The speed-controllable and micro-orientable multi-scene application universal wheel comprises a fixing plate, bearings, a side plate, a roller and a generator, the fixing plate is detachably connected with the side plate, the bearings are installed on the fixing plate and the side plate, the roller is connected with the two bearings through a roller rotating shaft, and the generator is installed on the side plate. One end of the roller rotating shaft is coaxially connected with a generator, a steering bearing is arranged at the top of the fixing plate and arranged in a top bearing sleeve, a limiting structure is further arranged in the top bearing sleeve, and the electric energy output end of the generator is connected with the electric energy input end of the limiting structure; a reducing mechanism is arranged outside the roller rotating shaft; the system can cope with different use scenes, can rapidly adjust parameters, can cope with the use of each scene, is small in size, and greatly improves the convenience degree and safety of the use process under the condition of guaranteeing the cost and space occupation. The structure is simple, multiple mechanical structures are adopted, cost is low, maintenance and replacement are easy, combination is convenient, disassembly is easy, and the whole device does not need to be replaced when a certain part is damaged. And the selection freedom degree of each part is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of material transportation, and specifically relates to a universal wheel and a transportation device with controllable speed and micro-orientation for multiple scenarios. Background Art

[0002] Rollers are everywhere in life, such as handcarts, suitcases, and baby strollers. They can save the effort required to transport goods and baby strollers, and they are cheap and have a mechanical structure that is easy to repair and replace, so they have been widely used. However, most rollers on the market are only directional or completely free to change. It is difficult to control the direction when transporting heavy objects, and it is not easy to control the direction when encountering slopes, potholes, and other scenes. It often requires human attention and effort to slow down, otherwise there will be a risk of overturning or cargo being left behind, etc., causing many inconveniences.

[0003] When transporting fragile items or using a stroller, due to the simplicity of its structure, you must always pay attention and operate it carefully. However, some use scenarios, such as strollers, are often used for a long time and many times, and it is difficult for users to concentrate for a long time, otherwise the huge harm caused is obvious to all. For special use scenarios of strollers, for various reasons, the users are mainly elderly people and women, and the stroller may need to control the speed more. Outdoor transportation requires more stable direction. The existing strollers, suitcases or hand carts equipped with universal wheels are laborious to operate, which is very inconvenient and may even cause danger.

[0004] Therefore, there is an urgent need for a new type of roller that can meet the needs of outdoor heavy object transportation, use a certain structure to achieve semi-self-service speed control, and can easily adjust the direction and use in disguise, and save effort when facing potholes. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a multi-scenario application universal wheel and transportation device with controllable speed and micro-orientation, which has a simple structure and low cost, can perform semi-self-service speed control, and can conveniently adjust the orientation and be used in disguise.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a universal wheel with controllable speed and micro-orientation for multi-scenario applications, including a fixed plate, a bearing, a side plate, a roller and a generator, the fixed plate and the side plate are detachably connected, the bearings are installed on the fixed plate and the side plates, the roller is connected to the two bearings through the roller rotating shaft, one end of the roller rotating shaft is coaxially connected to the generator, a steering bearing is arranged on the top of the fixed plate, the steering bearing is arranged in the top bearing sleeve, a limiting structure is also arranged in the top bearing sleeve, the power output end of the generator is connected to the power input end of the limiting structure; a reduction mechanism is arranged on the outside of the roller rotating shaft.

[0007] Furthermore, the limiting structure includes a limiting groove, a ferrule limiting groove, a spring, and a limiter. The two ends of the spring are respectively connected to the ferrule limiting groove and the limiter. The limiter is connected to the electromagnet, and the electromagnet is arranged above and below the spring.

[0008] Furthermore, the limiting structure includes an electromagnet and a brake pad, which are arranged on the outer side of the steering bearing. The electromagnet is connected to the brake pad, and the brake pad can contact the outer side of the steering bearing.

[0009] Furthermore, the limiting structure includes a limiting groove, a spherical limiting groove, a spring and a flexible limiting block, the two ends of the spring are respectively connected to the spherical limiting groove and the flexible limiting block, the flexible limiting block is connected to the electromagnet, and the electromagnet is arranged above and below the spring.

[0010] Furthermore, the deceleration mechanism is specifically as follows: a slot is opened on the roller rotating shaft, a spring is arranged in the slot, one end of the spring is connected to the bottom of the slot, and the other end is connected to the stop hook, a stopper is arranged on the side of the fixed plate, a stopper brake rod, the brake rod is connected to the card block, and the card block is connected to the fixed plate; the lower end of the stopper is arranged outside the rotation track of the slot; the lower end of the stopper is arranged with a slot that can be hooked by the stop hook.

[0011] Furthermore, at least two speed-changing grooves are provided on the fixed plate, and the clamping blocks are mounted in the speed-changing grooves.

[0012] Furthermore, the deceleration mechanism is specifically as follows: a slot is opened on the rotating shaft of the roller, a spring is arranged in the slot, one end of the spring is connected to the bottom of the slot, and the other end is connected to the stop hook, a stopper is arranged on the side of the fixed plate, the stopper includes a brake block, a groove that can be hooked by the stop hook is opened on the brake block, and the brake block is connected to a clockwork damper, and the clockwork damper is installed on the outside of the fixed plate.

[0013] Furthermore, the deceleration mechanism is specifically that a slot is opened on the roller rotating shaft, a spring is arranged in the slot, one end of the spring is connected to the bottom of the slot, and the other end is connected to the stop hook, and a stopper is arranged on the side of the fixed plate, the stopper includes a restoring spring, a brake electromagnet and an arc-shaped brake pad, the arc-shaped brake pad is arranged on the outside of the roller rotating shaft, the power input end of the brake electromagnet is connected to the output end of the generator, and the brake electromagnet is connected to the arc-shaped brake pad and the fixed plate.

[0014] Furthermore, the fixed plate and the side plate are connected by bolts, and the generator is coaxially connected to the roller rotating shaft through a coupling.

[0015] The present invention can also provide a transport device, which adopts the above-mentioned multi-scenario application universal wheel with controllable speed and micro-orientation.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: simple structure, multiple mechanical structures, low cost, easy maintenance and replacement, convenient assembly and easy disassembly, and no need to replace the entire part if it is damaged. The parts of each part have a high degree of freedom in selection, and parts of different strengths and hardness can be adjusted on this basis to meet various needs; it can cope with different usage scenarios, can quickly adjust parameters, cope with the use of various scenarios, and has a small size, which greatly improves the convenience and safety of the use process while ensuring cost and space occupancy.

[0017] Furthermore, the limiting structure includes a limiting groove, a spherical limiting groove, a spring and a flexible limiting block, the two ends of the spring are respectively connected to the spherical limiting groove and the flexible limiting block, the flexible limiting block is connected to the electromagnet, and the electromagnet is arranged above and below the spring; the faster the speed, the greater the power generation of the generator, the stronger the force of the electromagnet, the tighter the contact between the flexible limiting block and the spherical limiting groove, and the greater the effect of preventing steering.

[0018] Furthermore, the limiting structure includes a limiting groove, a ferrule limiting groove, a spring, and a limiter. The two ends of the spring are respectively connected to the ferrule limiting groove and the limiter. The limiter is connected to an electromagnet. The electromagnet is arranged above and below the spring. When the roller speed increases and the power generation of the generator increases, the electromagnet is activated, and the electromagnet pushes the limiter down into the ferrule limiting groove to limit the roller from rotating left and right.

[0019] Furthermore, the limiting structure includes an electromagnet and a brake pad, which are arranged on the outer side of the steering bearing. The electromagnet is connected to the brake pad, and the brake pad can contact the outer side of the steering bearing. The roller speed increases, the power generation of the generator increases, the electromagnet is activated, and the electromagnet pushes the brake pad to contact the outer side of the steering bearing, preventing or limiting the rotation of the steering bearing. The greater the speed, the tighter the contact between the brake pad and the outer side of the steering bearing.

[0020] Furthermore, the stopper includes a restoring spring, a brake electromagnet and an arc-shaped brake pad. The power input end of the brake electromagnet is connected to the output end of the generator, the arc-shaped brake pad is arranged on the outside of the roller rotating shaft, and the brake electromagnet is connected to the arc-shaped brake pad and the fixed plate; when the speed is too fast, the instant power generation of the generator is sufficient to activate the brake electromagnet, and the brake electromagnet pushes the arc-shaped brake pad to move toward the roller rotating shaft, providing resistance and reducing the vehicle speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front view structure of the universal wheel for multi-scenario applications described in the present invention.

[0022] Figure 2 This is a schematic diagram of the top view of the universal wheel structure for multiple scenarios of application described in the present invention.

[0023] Figure 3This is a schematic diagram of the right-view structure of the universal wheel for multi-scenario applications described in the present invention.

[0024] Figure 4 This is a left-view structural schematic diagram of the universal wheel for multi-scenario applications described in the present invention.

[0025] Figure 5 This is a schematic diagram of the universal wheel installation sleeve for multiple scenarios of application described in the present invention.

[0026] Figure 6 This is a schematic diagram of the top structure of the universal wheel for multiple scenarios of application described in the present invention.

[0027] Figure 7 This is a cross-sectional view of the universal wheel stopper for multiple scenarios of application described in the present invention.

[0028] Figure 8 This is a three-dimensional schematic diagram of the universal wheel for multiple scenarios of application according to the present invention.

[0029] In the accompanying drawings, 1-fixed plate, 2-first bearing, 3-side plate, 4-roller, 5-generator, 6-electromagnet, 7-stopper, 8-second bearing, 9-steering bearing, 10-limiting groove, 11-top bearing sleeve, 12-card sleeve limiting groove, 13-spring, 14-limiter, 15-stop hook, 16-spring, 17-speed shift groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention. The orientation or positional relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", "one side", "one end", "one side", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description.

[0032] Example 1, reference Figure 1 , Figure 2 , Figure 3 and Figure 8A multi-scenario application universal wheel with controllable speed and micro-orientation comprises a fixed plate 1, a first bearing 2, a side plate 3, a roller 4 and a generator 5. The fixed plate 1 is detachably connected to the side plate 3, the first bearing 2 is mounted on the fixed plate 1 and the side plate 3, the roller 4 is connected to the two first bearings 2 through a roller rotating shaft, one end of the roller rotating shaft is coaxially connected to the generator 5, and a stopper 7 is arranged at the other end of the roller rotating shaft. The fixed plate 1 is detachably connected to the side plate 3, the first bearing 2 is mounted on the fixed plate 1 and the side plate 3, the roller 4 is connected to the two first bearings 2 through the roller rotating shaft, one end of the roller rotating shaft is coaxially connected to the generator 5, a steering bearing 9 is arranged on the top of the fixed plate 1, the steering bearing 9 is arranged in a top bearing sleeve 11, a limiting structure is also arranged in the top bearing sleeve 11, the power output end of the generator 5 is connected to the power input end of the limiting structure; a speed reduction mechanism is arranged on the outer side of the roller rotating shaft.

[0033] refer to Figure 2 , Figure 5 , Figure 6A steering bearing 9 is arranged on the top of the fixed plate 1, and the steering bearing 9 is arranged in the top bearing sleeve 11. A limiting structure is also arranged in the top bearing sleeve 11, and the limiting structure includes a limiting groove 10, a sleeve limiting groove 12, a spring 13, and a limiter 14. The two ends of the spring 13 are respectively connected to the sleeve limiting groove 12 and the limiter 14. The limiter 14 is connected to the electromagnet 6, and the electromagnet 6 is arranged above and below the spring 13. The fixing plate 1 is a supporting structure, and the fixing plate 1 is used to install and fix the top bearing sleeve 11 and the steering bearing 9 and the limiting structure inside it. The steering bearing 9 allows the connecting shaft on the fixing plate 1 to rotate; the top bearing sleeve 11 provides installation space and protection for the steering bearing 9, and is also used to install the limiting structure; the limiting groove 10 is fixed to the groove on the top bearing sleeve 11, and is used to guide or limit the movement trajectory of the limiter 14. The ferrule limiting groove 12 is a fixed point or groove connected to one end of the spring 13, which is located in the top bearing sleeve 11 and is used to fix one end of the spring 13; the spring 13 is connected between the ferrule limiting groove 12 and the limiter 14, and is used to provide a reset force. Under the control of the electromagnet 6, the limiter 14 can move to contact the steering bearing 9 or other parts of the top bearing sleeve 11, thereby limiting the rotation of the steering bearing 9; the electromagnet 6 is arranged above and below the spring 13, and is used to control the position of the limiter 14. When the electromagnet is energized, the magnetic force generated will attract or repel the limiter 14, thereby changing its position. The electromagnet 6 is not energized, and the limiter 14 is kept in the initial position under the action of the spring 13, and does not interfere with the normal rotation of the steering bearing 9; when the speed is too high, the electromagnet 6 is triggered, and the magnetic force generated by the electromagnet attracts or repels the limiter 14, so that it moves to a position in contact with the steering bearing 9 or a part of the top bearing sleeve 11, thereby limiting the rotation of the steering bearing through friction or resistance. When the speed is reduced, the electromagnet 6 loses power or the power is insufficient, and the limiter 14 returns to the initial position under the action of the spring 13, and no longer limits the rotation of the steering bearing.

[0034] The key connection makes it easy to disassemble and replace the wheel to use different products. Each part can be easily disassembled, and the easily damaged parts can be replaced or repaired without disassembling the whole.

[0035] The present invention uses a bearing as a central component, and the roller 4 is connected to the first bearing 2 through the two ends of the roller rotating shaft. A slot is provided on the roller rotating shaft, and a spring 16 is arranged in the slot. The spring 16 is connected to the stopper 7. When the rotation speed is too fast, the required centripetal force becomes larger, and the spring 16 becomes longer and collides with the limiter, and they are connected with each other to achieve the stopping effect. At this time, the roller 4 rotates backward to quickly release the locked state. The unfavorable situation caused by the slipping of the cart when no one is there will not occur. In addition, with the help of the generator 5, the voltage generated by the roller movement speed activates the electromagnet compression spring 13, and the limiter 14 on the protective cover is pressed down to limit the left and right rotation of the roller, and the rotation angle is inversely proportional to the travel speed, so that it will not be easily changed when pushing forward quickly and will not be affected when preparing to turn at a low speed.

[0036] refer to Figure 4 and Figure 7 In the present invention, a key is set between the roller 4 and the roller rotating shaft to achieve a transmission effect. A key is set between the first bearing 2 and the roller rotating shaft. During the rotation, the spring 16 stretches under the action of centrifugal force, so that the stop hook 15 is connected with the stopper 7 to stop the roller 4 from rolling. The stopper 7 can also be adjusted up and down in the speed slot 17 to meet the speed requirements of different scenes, so that the speed upper limit can be adjusted. The stopper is pushed inward and outward to select whether to open the speed limit, and then pulled back to close.

[0037] A stopper 7 is arranged on the side of the fixed plate 1, and the stopper 7 includes a brake rod and a block, the brake rod is connected to the block, and the block is connected to the fixed plate 1. As a further optimization, the lower end surface of the brake rod may collide with the stop hook 15 without hooking with each other, so the lower end surface of the brake rod is processed into a smooth surface, and the contact surface after the lower end of the brake rod is hooked with the stop hook 15 is processed into a rough surface or serrated to increase friction.

[0038] At the same time, the generator 5 is generated as the roller rolls, and a slipper and switch can be placed to adjust the current size and whether to turn it on, and it is connected to the electromagnet 6. When in use, the electromagnet 6 attracts the limiter 14, causing the spring 13 to stretch, and the limiter 14 is inserted into the limit slot 10 in the shape of a double truncated cone. The faster the rolling, the greater the current, the higher the degree of engagement of the limiter 14, and the smaller the overall rotation amplitude of the roller, which can achieve different rotation degrees at different speeds and the rotation degree is inversely proportional to the speed.

[0039] The limiting structure described in the embodiment includes an electromagnet 6 and a brake pad, which are arranged on the outer side of the steering bearing 9, and the electromagnet 6 is connected to the brake pad, and the brake pad can contact the outer side of the steering bearing 9. The electromagnet 6 and the brake pad are arranged on the outer side of the steering bearing 9. When the electromagnet 6 is not energized, the brake pad maintains a certain gap with the outer side of the steering bearing 9, and does not contact, so it does not affect the normal rotation of the steering bearing; when it is necessary to limit or prevent the rotation of the steering bearing, the control system sends a signal to the electromagnet 6 to energize it, and the energized electromagnet generates magnetic force to attract the brake pad to move to the outer side of the steering bearing until the two are in close contact. Due to the friction between the brake pad and the steering bearing, the rotation of the steering bearing will be limited or completely stopped; when it is necessary to release the brake on the steering bearing, stop supplying power to the electromagnet 6 or reduce the power supply capacity, the electromagnet loses its magnetic force, and the brake pad returns to the initial position under the action of the spring, and is separated from the outer side of the steering bearing, thereby allowing the steering bearing to rotate freely.

[0040] The present invention provides another embodiment of a limiting structure, wherein the limiting structure comprises a limiting groove 10, a limiting groove, a spring 13 and a flexible limiting block, wherein the two ends of the spring 13 are respectively connected to a spherical limiting groove and a flexible limiting block, wherein the flexible limiting block is connected to an electromagnet 6, and the electromagnet 6 is arranged above and below the spring 13; the limiting groove may be in the shape of a trapezoid, a triangle and a geared edge, and the limiting groove is preferably in the shape of a spherical surface. The limiting groove is used to limit and guide the moving trajectory of the moving part, and the spring is connected between the limiting groove and the flexible limiting block. Its main function is to provide elasticity and reset functions. When the flexible limiting block is acted upon by the electromagnet, the spring will be compressed or stretched; when the action of the electromagnet disappears, the spring will restore its original length, thereby driving the flexible limiting block back to the initial position. The flexible limiting block is a deformable component, made of a material with a certain elasticity, connected to one end of the spring, and when the electromagnet is energized, a magnetic force is generated to attract or repel the flexible limiting block, thereby changing its position. The flexible limiting block can contact and rub with the limiting groove to generate resistance.

[0041] The present invention provides a deceleration mechanism, specifically: a slot is opened on the rotating shaft of the roller, a spring 16 is arranged in the slot, one end of the spring 16 is connected to the bottom of the slot, and the other end is connected to the stop hook 15, a stopper 7 is arranged on the side of the fixed plate 1, the stopper 7 has a brake rod, the brake rod is connected to a block, and the block is connected to the fixed plate 1; the lower end of the stopper 7 is arranged outside the rotation track of the slot; the lower end of the stopper 7 is provided with a slot that can be hooked by the stop hook 15.

[0042] For further optimization, at least two speed-changing grooves 17 are provided on the fixed plate 1 , and the clamping blocks are mounted in the speed-changing grooves 17 .

[0043] The present invention also provides another embodiment of the deceleration mechanism, specifically: a slot is opened on the roller rotating shaft, a spring 16 is arranged in the slot, one end of the spring 16 is connected to the bottom of the slot, and the other end is connected to the stop hook 15, a stopper 7 is arranged on the side of the fixed plate 1, the stopper 7 includes a brake block, a groove that can be hooked by the stop hook 15 is opened on the brake block, the brake block is connected to a spring-type damper, and the spring-type damper is installed on the outside of the fixed plate 1.

[0044] Optionally, the deceleration mechanism can also adopt the following structure: a slot is provided on the roller rotating shaft, a spring 16 is provided in the slot, one end of the spring 16 is connected to the bottom of the slot, and the other end is connected to the stop hook 15, a stopper 7 is provided on the side of the fixed plate 1, the stopper 7 includes a recovery spring, a brake electromagnet and an arc brake pad, the arc brake pad is provided on the outside of the roller rotating shaft, the power input end of the brake electromagnet is connected to the output end of the generator 5, the brake electromagnet is connected to the arc brake pad and the fixed plate 1, wherein the slot provided on the roller rotating shaft is used to install and fix the spring and the stop hook, and the spring is connected between the bottom of the slot and the stop hook to play a reset role. When the stop hook is released or triggered, the spring can pull the stop hook back to the initial position to prepare for the next operation. The stop hook is a movable component designed to contact with the stopper 7 when needed, thereby preventing the roller from rotating further. When the brake electromagnet is energized, a magnetic force is generated to attract the arc brake pad close to the roller rotating shaft to achieve a braking effect, and its power input end is connected to the output end of the generator 5, and the power of the brake system comes from the generator. When the roller needs to be stopped, the power of the generator 5 is transmitted to the brake electromagnet through the control system, so that it is energized and generates magnetic force. The magnetic force attracts the arc-shaped brake pad close to the roller rotation axis until the two are in close contact, and the roller is prevented from rotating by friction.

[0045] In summary, the present invention provides a multi-scenario application universal wheel with controllable speed and micro-orientation, including a fixed plate 1, a bearing, a side plate 3, a roller 4 and a generator 5, wherein the fixed plate 1 is detachably connected to the side plate 3, the bearing is mounted on the fixed plate 1 and the side plate 3, the roller 4 is connected to two bearings through a roller rotating shaft, one end of the roller rotating shaft is coaxially connected to the generator 5, a steering bearing 9 is arranged on the top of the fixed plate 1, the steering bearing 9 is arranged in the top bearing sleeve 11, and a limiting structure is also arranged in the top bearing sleeve 11, and the power output end of the generator 5 is connected to the power input end of the limiting structure; a speed reduction mechanism is arranged on the outside of the roller rotating shaft; the universal wheel has a simple structure, multiple mechanical structures, low cost, easy maintenance and replacement, convenient combination and easy disassembly, and a part does not need to be replaced as a whole when it is damaged. The parts of each part have a high degree of freedom in selection, and parts of different strengths and hardnesses can be adjusted on this basis to meet various needs; it can cope with different usage scenarios, can quickly adjust parameters, cope with the use of various scenarios, and has a small size, which greatly improves the convenience and safety of the use process while ensuring cost and space occupancy.

[0046] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A universal wheel with controllable speed and micro-orientation for multi-scenario applications, characterized in that: The invention comprises a fixed plate (1), a bearing, a side plate (3), a roller (4) and a generator (5), wherein the fixed plate (1) and the side plate (3) are detachably connected, the bearing is mounted on the fixed plate (1) and the side plate (3), the roller (4) is connected to two bearings via a roller rotating shaft, one end of the roller rotating shaft is coaxially connected to the generator (5), a steering bearing (9) is arranged at the top of the fixed plate (1), the steering bearing (9) is arranged in a top bearing sleeve (11), a limiting structure is also arranged in the top bearing sleeve (11), an electric energy output end of the generator (5) is connected to an electric energy input end of the limiting structure; and a speed reduction mechanism is arranged outside the roller rotating shaft.

2. The multi-scenario application universal wheel with controllable speed and micro-orientation according to claim 1 is characterized in that: The limiting structure comprises a limiting groove (10), a clamping sleeve limiting groove (12), a spring (13), and a limiter (14); two ends of the spring (13) are respectively connected to the clamping sleeve limiting groove (12) and the limiter (14); the limiter (14) is connected to an electromagnet (6); and the electromagnet (6) is arranged above and below the spring (13).

3. The multi-scenario application universal wheel with controllable speed and micro-orientation according to claim 1 is characterized in that: The limiting structure comprises an electromagnet (6) and a brake pad, wherein the electromagnet (6) and the brake pad are arranged on the outer side of the steering bearing (9), the electromagnet (6) is connected to the brake pad, and the brake pad can contact the outer side of the steering bearing (9).

4. The multi-scenario application universal wheel with controllable speed and micro-orientation according to claim 1 is characterized in that: The limiting structure comprises a limiting groove (10), a limiting groove, a spring (13) and a flexible limiting block, the two ends of the spring (13) are respectively connected to the spherical limiting groove and the flexible limiting block, the flexible limiting block is connected to the electromagnet (6), and the electromagnet (6) is arranged above and below the spring (13).

5. The multi-scenario application universal wheel with controllable speed and micro-orientation according to claim 1 is characterized in that: The deceleration mechanism is specifically as follows: a slot is provided on the rotating shaft of the roller, a spring (16) is arranged in the slot, one end of the spring (16) is connected to the bottom of the slot, and the other end is connected to the stop hook (15); a stopper (7) is arranged on the side of the fixed plate (1), the stopper (7) comprises a brake rod and a block, the brake rod is connected to the block, and the block is connected to the fixed plate (1); the lower end of the stopper (7) is arranged outside the rotation track of the slot; and the lower end of the stopper (7) is provided with a slot that can be hooked by the stop hook (15).

6. The multi-scenario application universal wheel with controllable speed and micro-orientation according to claim 5 is characterized in that: At least two speed change grooves (17) are formed on the fixed plate (1), and the clamping blocks are mounted in the speed change grooves (17).

7. The multi-scenario application universal wheel with controllable speed and micro-orientation according to claim 1 is characterized in that: The deceleration mechanism is specifically as follows: a slot is provided on the rotating shaft of the roller, a spring (16) is arranged in the slot, one end of the spring (16) is connected to the bottom of the slot, and the other end is connected to the stop hook (15), a stopper (7) is arranged on the side of the fixed plate (1), the stopper (7) comprises a brake block, a slot is provided on the brake block, and the stop hook (15) can be hooked, the brake block is connected to a spring-type damper, and the spring-type damper is installed on the outer side of the fixed plate (1).

8. The multi-scenario application universal wheel with controllable speed and micro-orientation according to claim 1, characterized in that: The deceleration mechanism is specifically as follows: a slot is provided on the roller rotating shaft, a spring (16) is arranged in the slot, one end of the spring (16) is connected to the bottom of the slot, and the other end is connected to the stop hook (15), a stopper (7) is arranged on the side of the fixed plate (1), the stopper (7) comprises a restoring spring, a brake electromagnet and an arc-shaped brake pad, the arc-shaped brake pad is arranged on the outer side of the roller rotating shaft, the power input end of the brake electromagnet is connected to the output end of the generator (5), and the brake electromagnet is connected to the arc-shaped brake pad and the fixed plate (1).

9. The multi-scenario application universal wheel with controllable speed and micro-orientation according to claim 1, characterized in that: The fixed plate (1) and the side plate (3) are connected by bolts, and the generator (5) is coaxially connected to the roller rotating shaft by a coupling.

10. A transport device, characterized in that: A multi-scenario application universal wheel with controllable speed and micro-orientation as described in any one of claims 1 to 9 is adopted.

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