A load bearing wheel and method of use thereof

Abstract

The application relates to the technical field of tires, in particular to a bearing wheel and a using method thereof, which comprises a tire composed of a first annular cylinder, a second annular cylinder and rubber blocks and a power shaft, the first annular cylinder and the second annular cylinder are both in the shape of 'L' in cross section and are slidably connected, the first annular cylinder, the rubber blocks and the second annular cylinder are connected with each other and form an annular air pressure cavity therebetween, the power shaft is arranged at the middle position of the air pressure cavity, a support adjusting part for connecting the tire is arranged on the outer surface of the power shaft, and a control part is further arranged on the second annular cylinder, the control part drives the first annular cylinder and the second annular cylinder to move relatively and controls the width of the rubber blocks; the position of the control cylinder is limited by the control blocks, the position of the movable shaft is limited by the limiting grooves, and then the maximum width of the tire is limited, the first annular cylinder and the second annular cylinder are prevented from being burst open when the tire is compressed, and the safety and the practicability are improved.

Description

Technical Field

[0001] This invention relates to the field of tire technology, specifically to a load-bearing wheel and its method of use. Background Technology

[0002] In the park, transport equipment is frequently used to transfer goods. Different types of transport equipment are needed to transport different weights in order to reduce the pressure on the ground and increase the grip of the transport equipment to prevent the transport equipment from tipping over due to insufficient friction between the tires and the ground. However, different models of transport equipment are required. Moreover, the goods on the transport equipment need to be unloaded in batches at different locations. Using large-scale transport equipment will increase the difficulty of turning due to the larger tires.

[0003] Therefore, a load-bearing wheel and its usage method are needed to solve the problem of poor adaptability of the load-bearing wheel to various weights. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a load-bearing wheel and its usage method, which uses a tire with controllable width to adapt to different loads on transport equipment, preventing excessive load from causing excessive pressure on the ground, while also increasing the grip of the transport equipment and preventing it from tipping over.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a load-bearing wheel and its method of use, comprising a tire and a drive shaft composed of an annular first ring cylinder, a second ring cylinder, and a rubber block. The first ring cylinder and the second ring cylinder have "L" shaped cross sections and are slidably connected. The first ring cylinder, the rubber block, and the second ring cylinder are interconnected and form an annular air pressure chamber therebetween. The drive shaft is located in the middle of the air pressure chamber, and a support and adjustment component for connecting the tire is provided on the outer surface of the drive shaft. A control component is also provided on the second ring cylinder, which drives the first ring cylinder and the second ring cylinder to move relative to each other and controls the width of the rubber block.

[0006] By adopting the above technical solution, an annular air pressure chamber is formed by connecting the first ring cylinder, the second ring cylinder, and the rubber block. The air pressure chamber and the rubber block then separate the first ring cylinder from the ground to prevent rigid contact and increase the service life of the equipment. Furthermore, the control components drive the first and second ring cylinders to move relative to each other, which allows the width of the tires to be controlled during use. This increases the contact area between the tires and the ground, reducing the pressure on the ground, and also increases the lateral width of the transport equipment in contact with the ground, preventing rollover.

[0007] The invention is further configured such that: the control component includes a control cylinder and a sealed inner cylinder; the sealed inner cylinder is disposed outside the second annular cylinder and forms a groove therebetween; one end of the first annular cylinder is slidably connected to and sealed to the inner wall of the groove; the end face of the first annular cylinder located within the groove has an inwardly recessed air cavity; the inner wall of the air cavity is slidably connected to a control cylinder extending outside the groove; the inner wall of the air cavity has a sliding cavity; the end face of the control cylinder located within the air cavity has a protrusion fixedly connected, and the protrusion is slidably connected to and sealed to the inner wall of the sliding cavity; the protrusion has a magnetic force; a pressure sensor is fixedly connected to the inner wall of the sliding cavity located between the air cavity opening and the protrusion; the end of the pressure sensor near the protrusion has a magnetic ring that has a repulsive magnetic force with respect to the protrusion.

[0008] By adopting the above technical solution, a sliding groove is formed by the second ring cylinder and the sealed inner cylinder. The two openings of the sliding groove are blocked by the control cylinder and the first ring cylinder, allowing them to slide. An external screw drives the control cylinder to move. At the same time, the control cylinder is inserted into the air chamber and seals the inner cavity of the air chamber. When the control cylinder moves, the air pressure in the air chamber drives the first ring cylinder to move synchronously. Meanwhile, when the first ring cylinder rotates, the control cylinder remains relatively stationary, thus completing the connection.

[0009] The present invention is further configured such that: the support adjustment component includes a fixed support rod and a support cylinder; the support cylinder is arranged around the outside of the power shaft; the inner wall of the support cylinder is fixedly connected to the outer surface of the power shaft by a plurality of fixed support rods; the outer surface of the support cylinder is fixedly connected to the inner surface of the sealing inner cylinder; and the support cylinder is connected to the first ring cylinder and the first ring cylinder is connected to the second ring cylinder by a connecting component.

[0010] By adopting the above technical solution, the tire is connected to the drive shaft using a fixed support rod, support cylinder and connecting assembly, and the tire is driven to rotate synchronously by the drive shaft. When the tire rotates and drives the transportation equipment to move, the impact on the drive shaft can be reduced by the fixed support rod, thus increasing the practicality of the equipment.

[0011] The present invention is further configured such that: the support adjustment component further includes a movable shaft and a movable support rod; the end face of the power shaft near the fixed support rod has an inwardly recessed control cavity that is slidably connected to the movable shaft; the movable shaft is fixedly connected to the inner wall of the control cavity by an elastic element; the inner wall of the control cavity has a plurality of circumferentially distributed limiting grooves; the inner wall of the control cavity is slidably connected to the movable shaft extending to the external environment; the end wall of the movable shaft located in the control cavity has a plurality of limiting blocks that are slidably connected to the inner wall of the limiting grooves; and the limiting grooves restrict the movement of the limiting blocks along the axial direction of the power shaft; the outer surface of the movable shaft is fixedly connected to the inner wall of the first annular cylinder by the movable support rod.

[0012] By adopting the above technical solution, and utilizing the structure of the movable shaft and the movable support rod, the first ring cylinder can be supported by the movable shaft and the movable support rod when it moves relative to the second ring cylinder, preventing the first ring cylinder from losing support and being damaged when it extends. At the same time, the rotation of the power shaft can be transmitted to the first ring cylinder through the movable shaft and the movable support rod, thus completing the power transmission.

[0013] The present invention is further configured such that: the connecting assembly includes a slide rod and a rotating block; the inner wall of the first ring cylinder near the power shaft is provided with a sliding groove that is slidably connected to the slide rod; and the other end of the slide rod is fixedly connected to the outer surface of the support cylinder; the inner wall of the sliding groove is provided with a rotating groove that extends along the relative moving direction of the first ring cylinder and the second ring cylinder; and the outer surface of the first ring cylinder located in the sliding groove is fixedly connected to a rotating block that is slidably connected to the inner wall of the rotating groove.

[0014] By adopting the above technical solution, the sliding connection structure of the support cylinder and the sliding groove, and the sliding connection structure of the rotating block and the rotating groove, the power shaft drives the support cylinder to rotate, the support cylinder then drives the first ring cylinder to rotate, and the first ring cylinder drives the second ring cylinder to rotate, thus completing the power connection.

[0015] The present invention is further configured such that: the inner wall of the opening of the control cylinder away from the second ring cylinder is slidably connected to the outer wall of the power shaft, and a control block that abuts against the first ring cylinder and the sealing inner cylinder is fixedly connected to the end face of the control cylinder away from the second ring cylinder.

[0016] By adopting the above technical solution, the control block is connected to an external screw, and the control cylinder is moved by the control block, which in turn moves the first ring cylinder relative to the second ring cylinder. At the same time, the connection between the control cylinder and the power shaft, and the connection between the control block and the external screw, are used to support the second ring cylinder, thereby further increasing the stability of the tire.

[0017] The invention is further configured such that: both ends of the rubber block are fixedly connected to the end faces of the first ring cylinder and the second ring cylinder respectively and are located on the side away from the power shaft; the rubber block is made of rubber material and protrudes outward.

[0018] By adopting the above technical solution, the rubber block bulges outward under the pressure inside the air chamber. When the rubber block contacts the ground, the weight of the transport equipment and goods applies pressure to the ground through the rubber block. The ground reacts to the rubber block and increases the pressure inside the air chamber, causing the first and second ring cylinders to move away from each other under pressure. At the same time, the rubber block deforms into the air chamber under pressure, thereby increasing the contact area between the rubber block and the ground, increasing the grip of the transport equipment, preventing tipping, and reducing the pressure on the ground to prevent ground damage.

[0019] The present invention is further configured such that: the movable support rod is in the shape of "<" and its tip is fixedly connected to the inner wall of the first ring cylinder, and its other end is fixedly connected to the outer surface of the movable shaft.

[0020] By adopting the above technical solution and utilizing the structure of the movable support rod, the mechanical properties of the movable support rod along the axis of the power shaft are increased and its service life is extended when the first ring cylinder moves and drives the movable shaft to move.

[0021] The invention is further configured as follows: Step 1: After mounting the control block on the screw on the vehicle body and the drive shaft on the axle on the vehicle body, air pressure is introduced into the air pressure chamber and the distance between the first ring cylinder and the second ring cylinder is controlled by the screw, and then the movable shaft is moved by the first ring cylinder; Step 2: The axle drives the drive shaft to rotate, and the drive shaft then drives the first ring cylinder and the second ring cylinder to rotate by the fixed support rod and the movable support rod; Step 3: When the driving or load changes, the distance between the first ring cylinder and the second ring cylinder is adjusted by the screw.

[0022] By adopting the above technical solution, during normal use, the movement of the control block is used to control the movement of the tire along the power shaft, increasing the width of the contact point between the tire and the ground. At the same time, the tire width can be changed by its own gravity when the load of the transport equipment changes, further increasing the grip of the transport equipment.

[0023] In summary, the present invention has the following beneficial effects:

[0024] First, by using control blocks to limit the position of the control cylinder and limiting grooves to limit the position of the movable shaft, the maximum width of the tire is limited, preventing the first and second ring cylinders from bursting when the tire is compressed, thus increasing safety and practicality.

[0025] Second, when the transport equipment is under heavy load, the pressure inside the air chamber increases and pushes the first and second ring cylinders apart to the sides, thereby increasing the width of the tire, reducing the pressure of the transport equipment on the ground, and increasing the tire's grip to prevent ground damage and the transport equipment from overturning.

[0026] Third, when the tire pressure in the air pressure chamber is too low, the control block pushes the second ring cylinder closer to the first ring cylinder. The first ring cylinder is limited by the stroke of the limiting groove and is at the position furthest from the power shaft, thereby reducing the space in the air pressure chamber, increasing the tire pressure, and preventing the first ring cylinder from directly contacting the ground and being damaged. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0029] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A;

[0030] Figure 4 This is a schematic diagram of the structure of the first annular cylinder in this invention;

[0031] Figure 5 This is a schematic diagram of the structure of the sealed inner cylinder in this invention;

[0032] Figure 6 This is a schematic diagram of the structure of the second annular cylinder in this invention;

[0033] Figure 7 This is a schematic diagram of the control cylinder in this invention;

[0034] Figure 8 This is a schematic diagram of the movable support rod in this invention.

[0035] In the picture:

[0036] 11. Power shaft; 12. Movable shaft; 13. Limiting groove; 14. Limiting block; 15. Fixed support rod; 16. Movable support rod; 17. First ring cylinder; 18. Second ring cylinder; 19. Rubber block; 20. Sliding groove; 21. Rotating groove; 22. Rotating block; 23. Air chamber; 24. Sliding cavity; 25. Control cylinder; 26. Magnetic ring; 27. Pressure sensor; 28. Sealed inner cylinder; 29. ​​Support cylinder; 30. Sliding rod; 31. Sliding groove; 32. Air pressure chamber; 33. Control block; 34. Control cavity; 35. Elastic element. Detailed Implementation

[0037] The present invention will now be described in detail with reference to the accompanying drawings of the embodiments thereof.

[0038] Example:

[0039] This type of load-bearing wheel and its usage method, such as Figures 1 to 3As shown, the device includes a tire and a drive shaft 11, consisting of a first annular cylinder 17, a second annular cylinder 18, and a rubber block 19. The first annular cylinder 17 and the second annular cylinder 18 have L-shaped cross-sections and are slidably connected. The first annular cylinder 17, the rubber block 19, and the second annular cylinder 18 are interconnected, forming an annular air pressure chamber 32 between them. The drive shaft 11 is located in the middle of the air pressure chamber 32, and a support and adjustment component for connecting the tire is provided on the outer surface of the drive shaft 11. A control component is also provided on the second annular cylinder 18. The control component drives the relative movement of the first annular cylinder 17 and the second annular cylinder 18 and controls the width of the rubber block 19. The control component includes a control cylinder 25 and a sealing inner cylinder 28. The sealing inner cylinder 28 is located outside the second annular cylinder 18 and forms a groove 20 between it and the inner cylinder 28. One end of the first annular cylinder 17 is slidably connected to and sealed to the inner wall of the groove 20. The end face of the first annular cylinder 17 located within the groove 20 has an inwardly recessed air chamber. 23. A control cylinder 25 extending to the outside of the slide groove 20 is slidably connected to the inner wall of the air chamber 23. A slide cavity 24 is opened in the inner wall of the air chamber 23. A protrusion is fixedly connected to the end face of the control cylinder 25 located in the air chamber 23. The protrusion is slidably connected to the inner wall of the slide cavity 24 and keeps sealed. The protrusion has a magnetic force. A pressure sensor 27 is fixedly connected to the inner wall of the slide cavity 24 located between the opening of the air chamber 23 and the protrusion. A magnetic ring 26 with mutual repulsive magnetic force is fixedly connected to the end of the pressure sensor 27 near the protrusion. The support adjustment component includes a fixed support rod 15 and a support cylinder 29. The support cylinder 29 is arranged around the outside of the power shaft 11. The inner wall of the support cylinder 29 is fixedly connected to the outer surface of the power shaft 11 by several fixed support rods 15. The outer surface of the support cylinder 29 is fixedly connected to the inner surface of the sealed inner cylinder 28. The support cylinder 29 is connected to the first ring cylinder 17 and the first ring cylinder 17 is connected to the second ring cylinder 18 by a connecting component.

[0040] like Figures 2 to 6 As shown, the support adjustment component also includes a movable shaft 12 and a movable support rod 16. The end face of the power shaft 11 near the fixed support rod 15 has an inwardly recessed control cavity 34 that is slidably connected to the movable shaft 12. The movable shaft 12 and the inner wall of the control cavity 34 are fixedly connected by an elastic element 35. The inner wall of the control cavity 34 has a plurality of surroundingly distributed limiting grooves 13. The movable shaft 12 extending to the external environment is slidably connected to the inner wall of the control cavity 34. A plurality of limiting blocks 14 that are slidably connected to the inner wall of the limiting grooves 13 are fixedly connected to the end wall of the movable shaft 12 located in the control cavity 34. The limiting grooves 13 restrict the limiting blocks 14 from moving along the axial direction of the power shaft 11. The outer surface of the movable shaft 12 is fixedly connected to the inner wall of the first ring cylinder 17 by the movable support rod 16.

[0041] like Figure 2 and Figure 3As shown, the connecting assembly includes a slide rod 30 and a rotating block 22. The inner wall of the first ring cylinder 17 near the power shaft 11 is provided with a sliding groove 31 that is slidably connected to the slide rod 30, and the other end of the slide rod 30 is fixedly connected to the outer surface of the support cylinder 29. The inner wall of the sliding groove 20 is provided with a rotating groove 21 that extends along the relative moving direction between the first ring cylinder 17 and the second ring cylinder 18. The outer surface of the first ring cylinder 17 located in the sliding groove 20 is fixedly connected to a rotating block 22 that is slidably connected to the inner wall of the rotating groove 21.

[0042] like Figure 2 and Figure 7 As shown, the inner wall of the opening of the control cylinder 25 away from the second ring cylinder 18 is slidably connected to the outer wall of the power shaft 11, and the end face of the control cylinder 25 away from the second ring cylinder 18 is fixedly connected to a control block 33 that abuts against the first ring cylinder 17 and the sealed inner cylinder 28.

[0043] like Figure 1 and Figure 2 As shown, the two ends of the rubber block 19 are fixedly connected to the end faces of the first ring cylinder 17 and the second ring cylinder 18 respectively and are located on the side away from the power shaft 11. The rubber block 19 is made of rubber and protrudes outward.

[0044] like Figure 2 and Figure 8 As shown, the movable support rod 16 is in the shape of "<" and its tip is fixedly connected to the inner wall of the first ring cylinder 17, while its other end is fixedly connected to the outer surface of the movable shaft 12.

[0045] like Figures 1 to 8 As shown, Step 1: After installing the control block 33 on the screw on the vehicle body and the drive shaft 11 on the axle on the vehicle body, air pressure is introduced into the air pressure chamber 32 and the distance between the first ring cylinder 17 and the second ring cylinder 18 is controlled by the screw. Then, the first ring cylinder 17 drives the movable shaft 12 to move. Step 2: The axle drives the drive shaft 11 to rotate. The drive shaft 11 then drives the first ring cylinder 17 and the second ring cylinder 18 to rotate through the fixed support rod 15 and the movable support rod 16. Step 3: When the driving or load changes, the distance between the first ring cylinder 17 and the second ring cylinder 18 is adjusted by the screw.

[0046] First, connect the control block 33 to the screw on the vehicle body. The servo motor and lead screw structure on the vehicle drive the screw on the lead screw to move, i.e., the servo motor drives the control block 33 to move left and right. The servo motor is controlled by a servo motor controller, specifically a SIMATIC S7-1500 series controller. Next, connect the power shaft 11 to the axle on the vehicle body, connecting the axle to the vehicle's engine. Then, use an air pump to inject appropriate air pressure into the air chamber 32. Simultaneously, use the servo motor to control the distance between the control block 33 and the power shaft 11. This means that the servo motor, screw, and control block 33 drive the control cylinder 25 to move. The control cylinder 25 engages with and seals the air chamber 23. The movement of the control cylinder 25 increases the air pressure in the left side of the air chamber 23 and decreases the air pressure in the right side. The protrusion on the control cylinder 25 abuts against the inner wall of the sliding cavity 24, ensuring a seal on both sides. The pressure inside the air chamber 23 pushes the first ring cylinder. 17 moves to the left, the first annular cylinder 17 slides and connects with the inner wall of the chute 20, maintaining a seal. Simultaneously, the control cylinder 25 moves away from the opening of the first annular cylinder 17 and abuts against the second annular cylinder 18 and the sealed inner cylinder 28. This causes the air pressure in the pneumatic chamber 32 to push it to its maximum position away from the first annular cylinder 17, restricting the position of the second annular cylinder 18 and the sealed inner cylinder 28 and preventing them from flying out. At the same time, when the load on the transport equipment increases, the rubber block 19 applies greater pressure to the ground, and the ground acts in the opposite direction on the rubber block 19, causing it to cave into the pneumatic chamber 32, thereby increasing the air pressure in the pneumatic chamber 32. This increased air pressure in the pneumatic chamber 32 pushes the first annular cylinder 17 and the second annular cylinder 18 apart to both sides. That is, the first ring cylinder 17 moves away from the control cylinder 25 and stretches the elastic element 35, thereby increasing the width of the air pressure chamber 32. This further increases the contact area between the rubber block 19 and the ground, reducing the pressure on the ground. It also increases the width of the transport equipment, increases grip, and prevents the transport equipment from tipping over. When it is necessary to reduce the friction between the tire and the ground, the servo motor and screw can drive the control block 33 to move closer to the first ring cylinder 17. This causes the control block 33 to drive the control cylinder 25 and the second ring cylinder 18 to move closer to the first ring cylinder 17. The control cylinder 25 then applies pressure to the left inner cavity of the air chamber 23 and pushes the first ring cylinder 17 to the left. When the first ring cylinder 17 moves to the left, it stretches the elastic element. 35 increases the resistance to the movement of the first ring cylinder 17, thereby increasing the pressure in the air pressure chamber 32, increasing the resistance of the air pressure chamber 32 to external forces, reducing the deformation of the rubber block 19, and thus reducing the friction between the rubber block 19 and the ground. The structure in which the limiting groove 13 and the limiting block 14 are slidably connected can limit the maximum stroke of the movable shaft 12 in the control chamber 34. That is, when the control cylinder 25 pushes the first ring cylinder 17 to move, the first ring cylinder 17 is restricted by the movable support rod 16, the movable shaft 12, the limiting block 14 and the limiting groove 13. When it moves to the maximum stroke, the elastic element 35 is in the maximum tension state, and at the same time, the limiting groove 13 prevents the first ring cylinder 17 from flying out.Furthermore, as the control cylinder 25 continues to move, it compresses the gas within the air pressure chamber 32, reducing the tire width while increasing the pressure within the air pressure chamber 32. This reduces friction between the tire and the ground, and also narrows the tire width, allowing the transport equipment to move more flexibly under lighter loads. Under heavier loads, the control cylinder 25 can move away from the first ring cylinder 17, causing the first ring cylinder 17 to move closer to the second ring cylinder 18 under the combined action of pressure and the elastic element 35. When the first ring cylinder 17 reaches its maximum stroke, the elastic element 35 is in its maximum compression state, and the limiting groove 13 restricts the limiting block 14 from moving further, while the control cylinder 25 continues to move, increasing the size of the air pressure chamber 32. The tire width is increased, which increases the indentation of the rubber block 19 when subjected to ground reaction force, thus increasing the contact area between the rubber block 19 and the ground, reducing the pressure on the ground, and increasing the friction between the rubber block 19 and the ground. During normal use, changes in the load of the transport equipment alter the indentation of the rubber block 19, thereby changing the pressure inside the air chamber 32. This causes a change in the combined force of the external environmental pressure, the pressure inside the air chamber 32, and the pressure inside the air chamber 23 on the first ring cylinder 17, resulting in relative movement of the first ring cylinder 17. This adaptively changes the tire width and the pressure inside the air chamber 32, increasing its self-adjustment capability. The fixed support rod 15 connects the power shaft 11 to the support cylinder 29, and the support cylinder 29 is then connected to the sealed inner cylinder. The first ring cylinder 17 is connected to the second ring cylinder 18 via a sliding rod 30 and a sliding groove 31, providing support for the first ring cylinder 17 and the sealed inner cylinder 28. The first ring cylinder 17 and the second ring cylinder 18 are connected via a rotating block 22 and a rotating groove 21, providing support for the second ring cylinder 18 and ensuring tire stability. When the first ring cylinder 17 moves relative to the second ring cylinder 18, a movable support rod 16 connects the first ring cylinder 17 to the movable shaft 12, preventing deformation due to load when the first ring cylinder 17 extends, thus increasing stability. Simultaneously, the "<"-shaped movable support rod 16 provides lateral support when the first ring cylinder 17 moves, preventing it from breaking during movement. The power shaft 11 rotates via a limiting groove. The connection between 13 and the limiting block 14 drives the movable support rod 16 to rotate, which in turn drives the first ring cylinder 17 to rotate. The power shaft 11 also drives the support cylinder 29 to rotate via the fixed support rod 15. The support cylinder 29 drives the sealed inner cylinder 28 to rotate. The first ring cylinder 17 drives the second ring cylinder 18 to rotate synchronously via the rotating block 22. The first ring cylinder 17 and the second ring cylinder 18 together drive the rubber block 19 to rotate, completing the normal operation of the wheel. The protrusion is a strong magnetic block, and there is a mutual repulsive magnetic force between the protrusion and the magnetic ring 26. The pressure sensor 27 can detect the pressure force exerted by the inner cavity on the right side of the air chamber 23 on the magnetic ring 26 and the resultant force of the magnetic force between the protrusion on the control cylinder 25 and the magnetic ring 26, thereby detecting the relative distance between the control cylinder 25 and the first ring cylinder 17.The pressure inside the air chamber 32 is then detected, and a signal is sent to the servo motor controller via the pressure sensor 27. The servo motor controller then controls the rotation of the servo motor, which in turn moves the control block 33 via a screw, facilitating control. The elastic element 35 is a spring.

[0047] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A load-bearing wheel, comprising a tire and a drive shaft (11) consisting of a first annular ring cylinder (17), a second annular ring cylinder (18), and a rubber block (19), characterized in that: The first ring cylinder (17) and the second ring cylinder (18) have "L" shaped cross sections and are slidably connected. The first ring cylinder (17), the rubber block (19) and the second ring cylinder (18) are connected to each other and form an annular air pressure chamber (32) between them. The power shaft (11) is located in the middle of the air pressure chamber (32), and the outer surface of the power shaft (11) is provided with a support adjustment component for connecting the tire. The second ring cylinder (18) is also provided with a control component. The control component drives the first ring cylinder (17) and the second ring cylinder (18) to move relative to each other and controls the width of the rubber block (19). The control component includes a control cylinder (25) and a sealed inner cylinder (28). The sealed inner cylinder (28) is disposed outside the second annular cylinder (18) and forms a groove (20) therebetween. One end of the first annular cylinder (17) is slidably connected to and sealed to the inner wall of the groove (20). The end face of the first annular cylinder (17) located inside the groove (20) has an inwardly recessed air cavity (23). The inner wall of the air cavity (23) is slidably connected to a control cylinder (25) extending outside the groove (20). A sliding cavity (24) is provided on the inner wall of the cavity (23). A protrusion is fixedly connected to the end face of the control cylinder (25) located in the air cavity (23). The protrusion is slidably connected to the inner wall of the sliding cavity (24) and kept sealed. The protrusion has a magnetic force. A pressure sensor (27) is fixedly connected to the inner wall of the sliding cavity (24) located between the opening of the air cavity (23) and the protrusion. A magnetic ring (26) with mutual repulsive magnetic force is fixedly connected to the end of the pressure sensor (27) near the protrusion.

2. A load-bearing wheel according to claim 1, characterized in that: The support adjustment component includes a fixed support rod (15) and a support cylinder (29). The support cylinder (29) is arranged around the outside of the power shaft (11). The inner wall of the support cylinder (29) is fixedly connected to the outer surface of the power shaft (11) by a plurality of fixed support rods (15). The outer surface of the support cylinder (29) is fixedly connected to the inner surface of the sealed inner cylinder (28). The support cylinder (29) is connected to the first ring cylinder (17), and the first ring cylinder (17) is connected to the second ring cylinder (18) by a connecting component.

3. A load-bearing wheel according to claim 2, characterized in that: The support adjustment component also includes a movable shaft (12) and a movable support rod (16). The end face of the power shaft (11) near the fixed support rod (15) is provided with an inwardly recessed control cavity (34) that is slidably connected to the movable shaft (12). The movable shaft (12) and the inner wall of the control cavity (34) are fixedly connected by an elastic element (35). The inner wall of the control cavity (34) is provided with a plurality of surroundingly distributed limiting grooves (13). The inner wall of the control cavity (34) is slidably connected to the movable shaft (12) that extends to the external environment. The end wall of the movable shaft (12) located in the control cavity (34) is fixedly connected with a plurality of limiting blocks (14) that are slidably connected to the inner wall of the limiting grooves (13). The limiting grooves (13) restrict the limiting blocks (14) from moving along the axial direction of the power shaft (11). The outer surface of the movable shaft (12) is fixedly connected to the inner wall of the first ring cylinder (17) by the movable support rod (16).

4. A load-bearing wheel according to claim 3, characterized in that: The connecting assembly includes a slide rod (30) and a rotating block (22). The inner wall of the first ring cylinder (17) near the power shaft (11) is provided with a sliding groove (31) that is slidably connected to the slide rod (30). The other end of the slide rod (30) is fixedly connected to the outer surface of the support cylinder (29). The inner wall of the sliding groove (20) is provided with a rotating groove (21) that extends along the relative moving direction of the first ring cylinder (17) and the second ring cylinder (18). The outer surface of the first ring cylinder (17) located in the sliding groove (20) is fixedly connected to a rotating block (22) that is slidably connected to the inner wall of the rotating groove (21).

5. A load-bearing wheel according to claim 4, characterized in that: The inner wall of the opening of the control cylinder (25) away from the second ring cylinder (18) is slidably connected to the outer wall of the power shaft (11), and the end face of the control cylinder (25) away from the second ring cylinder (18) is fixedly connected to a control block (33) that abuts against the first ring cylinder (17) and the sealed inner cylinder (28).

6. A load-bearing wheel according to claim 5, characterized in that: The two ends of the rubber block (19) are fixedly connected to the end faces of the first ring cylinder (17) and the second ring cylinder (18) respectively and are located on the side away from the power shaft (11). The rubber block (19) is made of rubber and protrudes outward.

7. A load-bearing wheel according to claim 3, characterized in that: The movable support rod (16) is in the shape of "<" and its tip is fixedly connected to the inner wall of the first ring cylinder (17), and its other end is fixedly connected to the outer surface of the movable shaft (12).

8. A method of using a load-bearing wheel, applied to any one of the load-bearing wheels according to claims 1-7, comprising the following steps: Step 1: After installing the control block (33) on the screw on the vehicle body and the power shaft (11) on the axle on the vehicle body, air pressure is introduced into the air pressure chamber (32) and the distance between the first ring cylinder (17) and the second ring cylinder (18) is controlled by the screw. Then, the movable shaft (12) is moved by the first ring cylinder (17). Step 2: Rotate the axle drive shaft (11), and the drive shaft (11) will then drive the first ring cylinder (17) and the second ring cylinder (18) to rotate through the fixed support rod (15) and the movable support rod (16); Step 3: Adjust the distance between the first ring cylinder (17) and the second ring cylinder (18) by screw when driving or the load changes.

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