Non-inflatable wheel with variable radius

Abstract

The invention discloses a non-inflatable wheel with a variable radius. The non-inflatable wheel comprises a hub, a central column, M sliding rods, a driving module, a telescopic module and a spoke module. The driving module comprises a threaded sleeve, a translation motor, a connecting piece, a translation cylinder, a rotating sleeve, a rotating motor, a transmission gear and a rotating cylinder; the telescopic module comprises N first sliding rails, N first connecting rods, N first hinge rods, N hinge plates, N second sliding rails, N second connecting rods and N second hinge rods; the spoke module comprises N large spokes and N small spokes. The radius of the wheel can be changed, the large radius and the small radius can be mutually converted, the wheel can flexibly adapt to different driving conditions, the tread and the spoke are of a partitioned structure and can be detached in a partitioned mode, and later maintenance and replacement are facilitated; the tire is a non-inflatable wheel, has good adaptability, and can also avoid tire burst.

Description

Technical Field

[0001] This invention relates to the field of automobile tires, and more particularly to a non-pneumatic wheel with a variable radius. Background Technology

[0002] With the rapid development of the automotive industry, consumers have increasingly higher demands for vehicle performance and user experience. In urban commuting, people expect vehicles to maintain a smooth ride in complex road conditions, reducing bumps and vibrations and improving passenger comfort. At the same time, higher expectations are placed on fuel economy and environmental performance. Variable radius tires can adjust their radius according to different driving speeds and road conditions, optimizing rolling resistance and thus reducing fuel consumption and emissions. In off-road and special-purpose vehicle applications, the requirements for tire passability and adaptability are extremely high. Variable radius tires can increase ground clearance and enhance passability when encountering complex terrain by increasing the radius; and decrease the radius to improve handling and stability when driving on flat roads.

[0003] Since their inception, the radius of traditional tires has remained largely fixed after design and manufacturing. This characteristic reveals numerous drawbacks when facing different road conditions and driving needs. In urban roads, while fixed-radius tires can meet normal driving conditions, their passability and ride comfort are significantly reduced when encountering potholes, speed bumps, or other uneven surfaces. Smaller tire radii are more susceptible to impacts from larger obstacles, increasing the risk of tire blowouts and transmitting strong vibrations to the vehicle body, affecting the passenger experience. In off-road scenarios, the limitations of fixed-radius tires are even more pronounced. Larger obstacles may prevent the tires from effectively traversing them, limiting the vehicle's range and off-road capability. Furthermore, at high speeds, the stability and handling of fixed-radius tires struggle to meet increasingly demanding driving requirements.

[0004] Current research on variable radius non-pneumatic tires is quite limited. A search revealed that application CN 205736636 U discloses a variable radius wheel with a rim that moves with the wheel. While this patent allows for flexible adjustment of the wheel radius to adapt to different road conditions and varying driving environments, it has a significant drawback in practical applications: when the wheel assembly is extended, the various parts cannot be tightly and securely connected to form a complete wheel body. This structural deficiency leads to a substantial decrease in wheel smoothness when the vehicle travels at an increased radius, posing a serious threat to overall driving stability and safety, and introducing unnecessary risks to the driver and passengers. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a non-pneumatic wheel with a variable radius, which addresses the deficiencies mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A variable radius non-pneumatic wheel includes a hub, a center column, M sliding rods, a drive module, a telescopic module, and a spoke module, where M is a natural number greater than or equal to 2; The hub is disc-shaped; one end of the central column is coaxially fixed to the hub, and the other end is provided with a first blind mounting hole. The M sliding rods are evenly arranged around the central circumference, and each one end is perpendicularly fixed to the wheel hub. The drive module includes a threaded sleeve, a translation motor, a connector, a translation cylinder, a rotating sleeve, a rotating motor, a transmission gear, and a rotating cylinder; The threaded sleeve is a hollow cylinder with openings at both ends and external threads on its outer wall; The translational motor is installed in the first blind mounting hole. After the output shaft extends out of the central column, it is coaxially fixed to the inner wall of the threaded sleeve through the connector, so that the threaded sleeve is sleeved outside the central column and coaxial with the central column. The translational cylinder is cylindrical, with a threaded blind hole along its axis on one end face that mates with the external thread of the threaded sleeve, and M smooth guide blind holes that correspond one-to-one with the slide rod are evenly arranged around the threaded blind hole on the end face; a second mounting blind hole for mounting a rotating motor is provided at the center of the other end face of the translational cylinder. The threaded blind hole of the translational cylinder is threadedly connected to the threaded sleeve. M sliding rods are inserted into the M guide blind holes on the translational cylinder one by one. The translational cylinder and the central column are coaxial. The translational motor is used to drive the threaded sleeve to rotate, thereby causing the translational cylinder to slide along the M sliding rods. The rotational motor is set in the second mounting blind hole, and the output shaft extends out of the translational cylinder and is coaxial with the translational cylinder. The rotating sleeve is a hollow cylinder with open ends, which is fitted over the translational cylinder and has a clearance fit with the translational cylinder. The outer wall of the translational cylinder is provided with an annular groove, and the inner wall of the rotating sleeve is provided with an annular groove that matches the annular groove on the outer wall of the translational cylinder. A number of rolling balls are evenly arranged between the annular groove on the outer wall of the translational cylinder and the annular groove on the inner wall of the rotating sleeve, so that the translational cylinder and the rotating sleeve can rotate freely relative to each other in the circumferential direction and be fixed in the axial direction. The rotating cylinder is a hollow cylinder with one end open and the other end closed. Its inner wall is provided with an annular rack for cooperating with the transmission gear. The open end of the rotating cylinder is uniformly provided with N U-shaped grooves. The U-shaped grooves include two straight sides parallel to the axis of the rotating cylinder and one arc side. N is a natural number greater than or equal to 3. The open end of the rotating cylinder is fitted over the rotating sleeve with a clearance fit; the output shaft of the rotating motor is coaxially and fixedly connected to the transmission gear, and the transmission gear meshes with the annular rack on the inner wall of the rotating cylinder; the rotating motor is used to drive the rotating sleeve to rotate relative to the translational cylinder; the rotating cylinder can slide freely in the axial direction relative to the transmission gear and the translational cylinder. The telescopic module includes N first slide rails, N first connecting rods, N first hinge rods, N hinge plates, N second slide rails, N second connecting rods, and N second hinge rods; The N first slide rails and N second slide rails are all U-shaped, each containing two long sides and one short plate, and each has a slider between the two long sides, which can slide freely along the two long sides; the N first slide rails have the same structure, and their width is the same as the width of the U-shaped groove on the rotating sleeve; the N second slide rails have the same structure. The N first slide rails are evenly arranged around the circumference of the rotating sleeve, each with one end fixed to the outer wall of the rotating sleeve, each perpendicular to the axis of the rotating sleeve, and each pointing towards the axis of the rotating sleeve; the N first slide rails are respectively matched with the N U-shaped grooves on the rotating sleeve in a clearance fit, so that the rotating sleeve and the rotating cylinder are fixed in the circumferential direction and can slide freely in the axial direction. The N hinge plates have the same structure and their width is less than or equal to the width of the first slide rail. The N hinge plates are evenly arranged around the circumference of the translation cylinder, and each of them is fixed at one end to the outer wall of the translation cylinder away from its mounting blind hole. They are all perpendicular to the axis of the translation cylinder and all point to the axis of the translation cylinder. Each hinge plate has a first hinge post on its end face facing the first slide rail; the hub has N second hinge posts evenly arranged around the central post; the first hinge posts and N second hinge posts on the N hinge plates are staggered and located in the same circle in the circumferential direction, and the circle is divided into 2N equal parts; The N first connecting rods are evenly arranged around the circumference of the rotating sleeve and are all parallel to the axis of the rotating sleeve; one end of each of the N first connecting rods is fixedly connected to the slider of each of the N first slide rails; one end of each of the N first hinge rods is hinged to the other end of each of the N first connecting rods, and the other end of each of the N first hinge rods is hinged to the first hinge post on each of the N hinge plates, so that the rotating sleeve and the translation cylinder can control the sliders of the N first slide rails to slide outward or inward simultaneously by mutual rotation; The N second slide rails are evenly arranged around the circumference of the rotating cylinder and alternate with the U-shaped grooves on the rotating cylinder. One end of each slide rail is fixed to the outer wall of the rotating cylinder, and each slide rail is perpendicular to the axis of the rotating cylinder and points towards the axis of the rotating cylinder. The N second connecting rods are evenly arranged around the circumference of the rotating cylinder and are all parallel to the axis of the rotating cylinder; one end of each of the N second connecting rods is fixedly connected to the corresponding slider of each of the N second slide rails; one end of each of the N second hinge rods is hinged to the other end of each of the N second connecting rods, and the other end of each of the N second hinge rods is hinged to each of the N second hinge posts, so that the rotating cylinder and the hub can control the sliders of the N second slide rails to slide outward or inward simultaneously through mutual rotation; The spoke module includes N large spokes and N small spokes. The N large spokes are fan-shaped surfaces with the same structure, and the N small spokes are fan-shaped surfaces with the same structure. The fan-shaped angle of the large spokes is greater than that of the small spokes, and the N large spokes and N small spokes are arranged alternately to form a ring. The N small spokes are evenly arranged around the circumference of the rotating sleeve and are fixedly connected to the sliders of the N first slide rails one by one; the N large spokes are evenly arranged around the circumference of the rotating cylinder and are fixedly connected to the sliders of the N second slide rails one by one. When a non-pneumatic wheel needs to be switched to a larger radius, the control motor operates, causing the rotating cylinder and rotating sleeve to rotate simultaneously relative to the translation cylinder and the hub. N large spokes move outward with the sliders of N second slide rails, and N small spokes move outward with the sliders of N first slide rails until the gap between the large spokes and the small spokes are the same size. Then, the control motor operates, causing the translation cylinder, rotating cylinder, second motor, and transmission gear to move along the axis of the central column towards the rotating cylinder, inserting the N small spokes between the N large spokes. When a non-pneumatic wheel needs to be switched to a smaller radius, the first motor is controlled to work, causing the translation cylinder, rotating cylinder, second motor, and transmission gear to translate along the axis of the central column toward the hub, pulling N small spokes out from between N large spokes. At this time, the N hinge plates on the translation cylinder translate to the outside of the rotating cylinder, and the N first slide rails are still located in the N U-shaped grooves of the rotating cylinder. Then, the rotating motor is controlled to work, causing the rotating cylinder and rotating sleeve to rotate simultaneously relative to the translation cylinder and the hub. The N large spokes move inward with the sliders of the N second slide rails, and the N small spokes move inward with the sliders of the N first slide rails until the large spokes fit together.

[0007] As a further optimization of the variable radius segmented non-pneumatic wheel of the present invention, M is set to 3.

[0008] As a further optimization of the variable radius segmented non-pneumatic wheel of the present invention, N is taken as 6.

[0009] As a further optimization of the variable radius segmented non-pneumatic wheel of the present invention, both the translation motor and the rotation motor are DC brushless motors.

[0010] Compared with the prior art, the present invention, employing the above technical solution, has the following technical effects: 1. When the car is driving smoothly on a good road surface, the wheels are set to a small radius to ensure smooth and stable driving. At this time, N small spokes are located to the left of N large spokes, which fit together to form a complete wheel body, ensuring that the wheel maintains its intended trajectory when turning or driving straight. This design optimizes aerodynamic performance and reduces wind resistance during driving. The wheels not only withstand various stresses during vehicle operation but also ensure driving comfort and handling.

[0011] 2. When the car travels on uneven roads, the wheels are set to a large radius to enhance stability and grip. At this time, N small spokes alternately fit with N large spokes to form a complete wheel body, ensuring the stability and integrity of the wheel structure.

[0012] 3. The tires feature a segmented structure, with both spokes and treads being individually detachable for easy maintenance and replacement. Large and small spoke segments are alternately distributed in a specific sequence, enhancing the overall strength of the rim and providing more stable and safer support during driving.

[0013] 4. All tires are non-pneumatic, which have relatively low rolling resistance, stronger grip, and greater adaptability; avoiding the risk of tire blowout and providing drivers with greater safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the hub, center column, and slide rail in this invention. Figure 3 This is an exploded structural diagram of the hub, center column, slide rail, and drive module in this invention. Figure 4 This is a schematic diagram of the structure of the rotating cylinder, rotating sleeve, N first slide rails, and N second slide rails in this invention. Figure 5 This is a schematic diagram of the structure of the translational cylinder and N hinged plates in this invention. Figure 6 This is a schematic diagram of the structure of the telescopic module, translational cylinder, and rotating sleeve in this invention. Figure 7 This is a schematic diagram of the structure of the telescopic module, hub, and rotating cylinder in this invention. Figure 8 This is a schematic diagram of the exploded structure of the present invention; Figure 9 This is a schematic diagram of the present invention when switching from a larger radius to a smaller radius.

[0015] In the diagram, 1-hub, 2-center post, 3-slide bar, 4-first mounting blind hole, 5-threaded sleeve, 6-translational motor, 7-connector, 8-translational cylinder, 9-second mounting blind hole, 10-rotating sleeve, 11-rotating motor, 12-transmission gear, 13-rotating cylinder, 14-first slide rail, 15-first connecting rod, 16-first hinge rod, 17-hinge plate, 18-first hinge post, 19-second hinge post, 20-second slide rail, 21-second connecting rod, 22-second hinge rod, 23-large spoke, 24-small spoke. Detailed Implementation

[0016] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings: This invention can be implemented in many different forms and should not be considered limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully express the scope of the invention to those skilled in the art. In the drawings, components are enlarged for clarity.

[0017] It should be understood that although the terms first, second, third, etc., may be used herein to describe various elements, components, and / or parts, these elements, components, and / or parts are not limited by these terms. These terms are merely used to distinguish elements, components, and / or parts from one another. Therefore, the first element, component, and / or part discussed below may be a second element, component, or part without departing from the teachings of this invention.

[0018] like Figure 1 As shown, this invention discloses a non-pneumatic wheel with a variable radius, including a hub, a center column, M sliding rods, a drive module, a telescopic module, and a spoke module, where M is a natural number greater than or equal to 2; like Figure 2 As shown, the hub is disc-shaped; one end of the central column is coaxially fixed to the hub, and the other end has a first blind mounting hole at its center; The M sliding rods are evenly arranged around the central circumference, and each one end is perpendicularly fixed to the wheel hub. The drive module includes a threaded sleeve, a translation motor, a connector, a translation cylinder, a rotating sleeve, a rotating motor, a transmission gear, and a rotating cylinder; like Figure 3 As shown, the threaded sleeve is a hollow cylinder with openings at both ends and external threads on its outer wall; The translational motor is installed in the first blind mounting hole. After the output shaft extends out of the central column, it is coaxially fixed to the inner wall of the threaded sleeve through the connector, so that the threaded sleeve is sleeved outside the central column and coaxial with the central column. The translational cylinder is cylindrical, with a threaded blind hole along its axis on one end face that mates with the external thread of the threaded sleeve, and M smooth guide blind holes that correspond one-to-one with the slide rod are evenly arranged around the threaded blind hole on the end face; a second mounting blind hole for mounting a rotating motor is provided at the center of the other end face of the translational cylinder. The threaded blind hole of the translational cylinder is threadedly connected to the threaded sleeve. M sliding rods are inserted into the M guide blind holes on the translational cylinder one by one. The translational cylinder and the central column are coaxial. The translational motor is used to drive the threaded sleeve to rotate, thereby causing the translational cylinder to slide along the M sliding rods. The rotational motor is set in the second mounting blind hole, and the output shaft extends out of the translational cylinder and is coaxial with the translational cylinder. The rotating sleeve is a hollow cylinder with open ends, which is fitted over the translational cylinder and has a clearance fit with the translational cylinder. The outer wall of the translational cylinder is provided with an annular groove, and the inner wall of the rotating sleeve is provided with an annular groove that matches the annular groove on the outer wall of the translational cylinder. A number of rolling balls are evenly arranged between the annular groove on the outer wall of the translational cylinder and the annular groove on the inner wall of the rotating sleeve, so that the translational cylinder and the rotating sleeve can rotate freely relative to each other in the circumferential direction and be fixed in the axial direction. The rotating cylinder is a hollow cylinder with one end open and the other end closed. Its inner wall is provided with an annular rack for cooperating with the transmission gear. The open end of the rotating cylinder is uniformly provided with N U-shaped grooves. The U-shaped grooves include two straight sides parallel to the axis of the rotating cylinder and one arc side. N is a natural number greater than or equal to 3. The open end of the rotating cylinder is fitted over the rotating sleeve with a clearance fit; the output shaft of the rotating motor is coaxially and fixedly connected to the transmission gear, and the transmission gear meshes with the annular rack on the inner wall of the rotating cylinder; the rotating motor is used to drive the rotating sleeve to rotate relative to the translational cylinder; the rotating cylinder can slide freely in the axial direction relative to the transmission gear and the translational cylinder. The telescopic module includes N first slide rails, N first connecting rods, N first hinge rods, N hinge plates, N second slide rails, N second connecting rods, and N second hinge rods; The N first slide rails and N second slide rails are all U-shaped, each containing two long sides and one short plate, and each has a slider between the two long sides, which can slide freely along the two long sides; the N first slide rails have the same structure, and their width is the same as the width of the U-shaped groove on the rotating sleeve; the N second slide rails have the same structure. The N first slide rails are evenly arranged around the circumference of the rotating sleeve, each with one end fixed to the outer wall of the rotating sleeve, each perpendicular to the axis of the rotating sleeve, and each pointing towards the axis of the rotating sleeve; the N first slide rails are respectively fitted with N U-shaped grooves on the rotating sleeve with clearance, so that the rotating sleeve and the rotating cylinder are fixed in the circumferential direction and can slide freely in the axial direction, such as Figure 4 As shown; The N hinge plates have identical structures, and their width is less than or equal to the width of the first slide rail. The N hinge plates are evenly arranged around the circumference of the translational cylinder, each with one end fixed to the outer wall of the translational cylinder away from its mounting blind hole. They are all perpendicular to the axis of the translational cylinder and all point towards the axis of the translational cylinder. Figure 5 As shown; Each hinge plate has a first hinge post on its end face facing the first slide rail; the hub has N second hinge posts evenly arranged around the central post; the first hinge posts and N second hinge posts on the N hinge plates are staggered and located in the same circle in the circumferential direction, and the circle is divided into 2N equal parts; like Figure 6 As shown, the N first connecting rods are evenly arranged around the circumference of the rotating sleeve and are all parallel to the axis of the rotating sleeve; one end of each of the N first connecting rods is fixedly connected to the slider of each of the N first slide rails; one end of each of the N first hinge rods is hinged to the other end of each of the N first connecting rods, and the other end of each of the N first hinge rods is hinged to the first hinge post on each of the N hinge plates, so that the rotating sleeve and the translation cylinder can control the sliders of the N first slide rails to slide outward or inward simultaneously by mutual rotation; The N second slide rails are evenly arranged around the circumference of the rotating cylinder, and alternate with the U-shaped grooves on the rotating cylinder. Each slide rail has one end fixed to the outer wall of the rotating cylinder, is perpendicular to the axis of the rotating cylinder, and points towards the axis of the rotating cylinder. Figure 4 As shown,; like Figure 7 As shown, the N second connecting rods are evenly arranged around the circumference of the rotating cylinder and are all parallel to the axis of the rotating cylinder; one end of each of the N second connecting rods is fixedly connected to the slider of each of the N second slide rails; one end of each of the N second hinge rods is hinged to the other end of each of the N second connecting rods, and the other end of each of the N second hinge rods is hinged to the N second hinge posts, so that the rotating cylinder and the hub can control the sliders of the N second slide rails to slide outward or inward simultaneously through mutual rotation; The spoke module includes N large spokes and N small spokes. The N large spokes are fan-shaped surfaces with the same structure, and the N small spokes are fan-shaped surfaces with the same structure. The fan-shaped angle of the large spokes is greater than that of the small spokes, and the N large spokes and N small spokes are arranged alternately to form a ring. like Figure 8 As shown, the N small spokes are evenly arranged around the circumference of the rotating sleeve and are fixedly connected to the sliders of the N first slide rails one by one; the N large spokes are evenly arranged around the circumference of the rotating cylinder and are fixedly connected to the sliders of the N second slide rails one by one. When a non-pneumatic wheel needs to be switched to a larger radius, the control motor operates, causing the rotating cylinder and rotating sleeve to rotate simultaneously relative to the translation cylinder and the hub. N large spokes move outward with the sliders of N second slide rails, and N small spokes move outward with the sliders of N first slide rails until the gap between the large spokes and the small spokes are the same size. Then, the control motor operates, causing the translation cylinder, rotating cylinder, second motor, and transmission gear to move along the axis of the central column towards the rotating cylinder, inserting the N small spokes between the N large spokes. like Figure 9 As shown, when a non-pneumatic wheel needs to be switched to a smaller radius, the first motor is controlled to work, causing the translation cylinder, rotating cylinder, second motor, and transmission gear to translate along the axis of the central column toward the hub, pulling N small spokes out from between N large spokes. At this time, the N hinge plates on the translation cylinder translate to the outside of the rotating cylinder, and the N first slide rails are still located in the N U-shaped grooves of the rotating cylinder. Then, the rotating motor is controlled to work, causing the rotating cylinder and rotating sleeve to rotate relative to the translation cylinder and the hub at the same time. The N large spokes move inward with the sliders of the N second slide rails, and the N small spokes move inward with the sliders of the N first slide rails until the large spokes fit together.

[0019] M is preferred to be 3, N is preferred to be 6, and both the translation motor and the rotary motor are DC brushless motors.

[0020] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein.

[0021] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-pneumatic wheel with a variable radius, characterized in that, It includes a hub, a center column, M sliding rods, a drive module, a telescopic module, and a spoke module, where M is a natural number greater than or equal to 2; The hub is disc-shaped; one end of the central column is coaxially fixed to the hub, and the other end is provided with a first blind mounting hole. The M sliding rods are evenly arranged around the central circumference, and each one end is perpendicularly fixed to the wheel hub. The drive module includes a threaded sleeve, a translation motor, a connector, a translation cylinder, a rotating sleeve, a rotating motor, a transmission gear, and a rotating cylinder; The threaded sleeve is a hollow cylinder with openings at both ends and external threads on its outer wall; The translational motor is installed in the first blind mounting hole. After the output shaft extends out of the central column, it is coaxially fixed to the inner wall of the threaded sleeve through the connector, so that the threaded sleeve is sleeved outside the central column and coaxial with the central column. The translational cylinder is cylindrical, with a threaded blind hole along its axis on one end face that mates with the external thread of the threaded sleeve, and M smooth guide blind holes that correspond one-to-one with the slide rod are evenly arranged around the threaded blind hole on the end face; a second mounting blind hole for mounting a rotating motor is provided at the center of the other end face of the translational cylinder. The threaded blind hole of the translational cylinder is threadedly connected to the threaded sleeve. M sliding rods are inserted into the M guide blind holes on the translational cylinder one by one. The translational cylinder and the central column are coaxial. The translational motor is used to drive the threaded sleeve to rotate, thereby causing the translational cylinder to slide along the M sliding rods. The rotational motor is set in the second mounting blind hole, and the output shaft extends out of the translational cylinder and is coaxial with the translational cylinder. The rotating sleeve is a hollow cylinder with open ends, which is fitted over the translational cylinder and has a clearance fit with the translational cylinder. The outer wall of the translational cylinder is provided with an annular groove, and the inner wall of the rotating sleeve is provided with an annular groove that matches the annular groove on the outer wall of the translational cylinder. A number of rolling balls are evenly arranged between the annular groove on the outer wall of the translational cylinder and the annular groove on the inner wall of the rotating sleeve, so that the translational cylinder and the rotating sleeve can rotate freely relative to each other in the circumferential direction and be fixed in the axial direction. The rotating cylinder is a hollow cylinder with one end open and the other end closed. Its inner wall is provided with an annular rack for cooperating with the transmission gear. The open end of the rotating cylinder is uniformly provided with N U-shaped grooves. The U-shaped grooves include two straight sides parallel to the axis of the rotating cylinder and one arc side. N is a natural number greater than or equal to 3. The open end of the rotating cylinder is fitted over the rotating sleeve with a clearance fit; the output shaft of the rotating motor is coaxially and fixedly connected to the transmission gear, and the transmission gear meshes with the annular rack on the inner wall of the rotating cylinder; the rotating motor is used to drive the rotating sleeve to rotate relative to the translational cylinder; the rotating cylinder can slide freely in the axial direction relative to the transmission gear and the translational cylinder. The telescopic module includes N first slide rails, N first connecting rods, N first hinge rods, N hinge plates, N second slide rails, N second connecting rods, and N second hinge rods; The N first slide rails and N second slide rails are all U-shaped, each containing two long sides and one short plate, and each has a slider between the two long sides, which can slide freely along the two long sides; the N first slide rails have the same structure, and their width is the same as the width of the U-shaped groove on the rotating sleeve; the N second slide rails have the same structure. The N first slide rails are evenly arranged around the circumference of the rotating sleeve, each with one end fixed to the outer wall of the rotating sleeve, each perpendicular to the axis of the rotating sleeve, and each pointing towards the axis of the rotating sleeve; the N first slide rails are respectively matched with the N U-shaped grooves on the rotating sleeve in a clearance fit, so that the rotating sleeve and the rotating cylinder are fixed in the circumferential direction and can slide freely in the axial direction. The N hinge plates have the same structure and their width is less than or equal to the width of the first slide rail. The N hinge plates are evenly arranged around the circumference of the translation cylinder, and each of them is fixed at one end to the outer wall of the translation cylinder away from its mounting blind hole. They are all perpendicular to the axis of the translation cylinder and all point to the axis of the translation cylinder. Each hinge plate has a first hinge post on its end face facing the first slide rail; the hub has N second hinge posts evenly arranged around the central post; the first hinge posts and N second hinge posts on the N hinge plates are staggered and located in the same circle in the circumferential direction, and the circle is divided into 2N equal parts; The N first connecting rods are evenly arranged around the circumference of the rotating sleeve and are all parallel to the axis of the rotating sleeve; one end of each of the N first connecting rods is fixedly connected to the slider of each of the N first slide rails; one end of each of the N first hinge rods is hinged to the other end of each of the N first connecting rods, and the other end of each of the N first hinge rods is hinged to the first hinge post on each of the N hinge plates, so that the rotating sleeve and the translation cylinder can control the sliders of the N first slide rails to slide outward or inward simultaneously by mutual rotation; The N second slide rails are evenly arranged around the circumference of the rotating cylinder and alternate with the U-shaped grooves on the rotating cylinder. One end of each slide rail is fixed to the outer wall of the rotating cylinder, and each slide rail is perpendicular to the axis of the rotating cylinder and points towards the axis of the rotating cylinder. The N second connecting rods are evenly arranged around the circumference of the rotating cylinder and are all parallel to the axis of the rotating cylinder; one end of each of the N second connecting rods is fixedly connected to the corresponding slider of each of the N second slide rails; one end of each of the N second hinge rods is hinged to the other end of each of the N second connecting rods, and the other end of each of the N second hinge rods is hinged to each of the N second hinge posts, so that the rotating cylinder and the hub can control the sliders of the N second slide rails to slide outward or inward simultaneously through mutual rotation; The spoke module includes N large spokes and N small spokes. The N large spokes are fan-shaped surfaces with the same structure, and the N small spokes are fan-shaped surfaces with the same structure. The fan-shaped angle of the large spokes is greater than that of the small spokes, and the N large spokes and N small spokes are arranged alternately to form a ring. The N small spokes are evenly arranged around the circumference of the rotating sleeve and are fixedly connected to the sliders of the N first slide rails one by one; the N large spokes are evenly arranged around the circumference of the rotating cylinder and are fixedly connected to the sliders of the N second slide rails one by one. When a non-pneumatic wheel needs to be switched to a larger radius, the control motor operates, causing the rotating cylinder and rotating sleeve to rotate simultaneously relative to the translation cylinder and the hub. N large spokes move outward with the sliders of N second slide rails, and N small spokes move outward with the sliders of N first slide rails until the gap between the large spokes and the small spokes are the same size. Then, the control motor operates, causing the translation cylinder, rotating cylinder, second motor, and transmission gear to move along the axis of the central column towards the rotating cylinder, inserting the N small spokes between the N large spokes. When a non-pneumatic wheel needs to be switched to a smaller radius, the first motor is controlled to work, causing the translation cylinder, rotating cylinder, second motor, and transmission gear to translate along the axis of the central column toward the hub, pulling N small spokes out from between N large spokes. At this time, the N hinge plates on the translation cylinder translate to the outside of the rotating cylinder, and the N first slide rails are still located in the N U-shaped grooves of the rotating cylinder. Then, the rotating motor is controlled to work, causing the rotating cylinder and rotating sleeve to rotate simultaneously relative to the translation cylinder and the hub. The N large spokes move inward with the sliders of the N second slide rails, and the N small spokes move inward with the sliders of the N first slide rails until the large spokes fit together.

2. The variable radius segmented non-pneumatic wheel according to claim 1, characterized in that, M is set to 3.

3. The variable radius segmented non-pneumatic wheel according to claim 1, characterized in that, The value of N is 6.

4. The variable radius segmented non-pneumatic wheel according to claim 1, characterized in that, Both the translation motor and the rotary motor are DC brushless motors.

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