Variable diameter and tread wheel structure based on a scissor lever and method of use

Abstract

The present application relates to the technical field of wheels, and provides a variable-diameter and tread wheel structure based on a scissor lever and a use method, which comprises a central shaft, a plurality of variable wheel units connected to the central shaft through a first central support and a second central support, the plurality of variable wheel units being uniformly and circumferentially spaced apart with the central shaft as the center, and the plurality of variable wheel units being capable of forming a complete wheel body; the first central support is fixedly sleeved on any end of the central shaft, and the second central support is slidably sleeved on the other end of the central shaft; the variable wheel unit comprises a first scissor lever hingedly connected to the first central support at a bottom end, a second scissor lever hingedly connected to the second central support at a bottom end, and a variable tread assembly, and the variable tread assembly is telescopic along the axial direction of the central shaft.The present application can change the diameter and the shape of the tread of the wheel through the connection of a plurality of scissor levers, so as to adapt to different terrains and driving conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle wheels, in particular to a variable diameter and tread wheel structure based on a scissor lever and a use method. BACKGROUND

[0002] Traditional wheel structures may encounter various difficulties when facing complex terrains, such as rough roads, soft sandy land or steep slopes, especially when the diameter and shape of the wheels are fixed and cannot be adjusted according to the terrain, resulting in limited passability and stability.

[0003] A scissor lever is a structural element used to support and stabilize objects, usually composed of two or more intersecting bars. It is designed to provide high strength and stability, commonly used in fields such as construction, mechanical engineering, aerospace, etc.

[0004] The present application applies the scissor lever to the wheel structure, on the one hand, the scissor lever can improve the stability and carrying capacity of the structure, on the other hand, the diameter and shape of the wheel can be changed to adapt to different terrains and driving conditions. SUMMARY

[0005] To solve the problems in the background art, the present application proposes a variable diameter and tread wheel structure based on a scissor lever, which adopts the following scheme: a central shaft is connected to a plurality of variable wheel units through a first central support and a second central support, the plurality of variable wheel units are uniformly spaced around the central shaft, the plurality of variable wheel units can form a complete wheel body, the first central support is fixedly sleeved on either end of the central shaft, and the second central support is slidably sleeved on the other end of the central shaft.

[0006] The variable wheel unit includes a first scissor lever hinged at the bottom end to the first central support, a second scissor lever hinged at the bottom end to the second central support, and a variable tread assembly, the first scissor lever and the second scissor lever are cross-hinged, the top end of the first scissor lever and the top end of the second scissor lever are respectively hinged to the two sides of the variable tread assembly through different support bars, and the variable tread assembly is axially expandable along the central shaft.

[0007] Further, the variable tread assembly includes at least one X-shaped scissor member and a V-shaped scissor member opposite to the two sides of the X-shaped scissor member, the X-shaped scissor member and the V-shaped scissor member are connected in a row along the central shaft, and the two bifurcated ends of the V-shaped scissor member are respectively hinged to the two bifurcated ends of the same side of the X-shaped scissor member.

[0008] Further, the X-shaped scissors comprises a first arc-shaped scissors lever and a second arc-shaped scissors lever which are cross-linked at a center point, the V-shaped scissors comprises two third arc-shaped scissors levers which are end-linked, and the first arc-shaped scissors lever, the second arc-shaped scissors lever and the third arc-shaped scissors lever are all arc-shaped members which are convex outwards along a direction away from the center axis.

[0009] Further, the X-shaped scissors are provided in plurality, and the plurality of X-shaped scissors are connected in a row in one direction, and the connection mode between adjacent X-shaped scissors is that the first arc-shaped scissors lever of one X-shaped scissors is linked with the second arc-shaped scissors lever of another X-shaped scissors, and the second arc-shaped scissors lever of one X-shaped scissors is linked with the first arc-shaped scissors lever of another X-shaped scissors.

[0010] Further, the support lever comprises a first support lever and a second support lever, one end of the first support lever is linked with the first scissors lever, the other end of the first support lever is linked with the bottom of the bifurcated root of any V-shaped scissors, one end of the second support lever is linked with the second scissors lever, and the other end of the second support lever is linked with the bottom of the bifurcated root of another V-shaped scissors.

[0011] Further, the circumferential surface of the center axis is composed of a plurality of planes, and the first center support and the second center support are both provided with a first connecting shaft and a second connecting shaft which correspond to the positions of the number of planes, the first connecting shaft is linked with the bottom end of the first scissors lever, and the second connecting shaft is linked with the bottom end of the second scissors lever.

[0012] A use method of a variable-diameter and tread wheel structure based on scissors levers, comprising the following steps: driving the second center support to move on the center axis in a direction away from the first center support, the second center support drives the bottom end of the first scissors lever and the bottom end of the second scissors lever to move away from each other, the top end of the first scissors lever and the bottom end of the second scissors lever move close to each other, and the diameter of the wheel structure becomes smaller; the two bifurcated ends of the V-shaped scissors move close to each other, the end of the first arc-shaped scissors lever and the end of the second arc-shaped scissors lever which are linked with the V-shaped scissors move close to each other, and the tread of the wheel structure becomes wider.

[0013] Driving the second center support to move on the center axis in a direction close to the first center support, the second center support drives the bottom end of the first scissors lever and the bottom end of the second scissors lever to move close to each other, the top end of the first scissors lever and the bottom end of the second scissors lever move away from each other, and the diameter of the wheel structure becomes larger; the two bifurcated ends of the V-shaped scissors move away from each other, the end of the first arc-shaped scissors lever and the end of the second arc-shaped scissors lever which are linked with the V-shaped scissors move away from each other, and the tread of the wheel structure becomes narrower.

[0014] The present application has the beneficial effects that: the present application changes the diameter while the wheel surface changes: the second center support moves away from or approaches the first center support, the second center support drives the bottom end of the first scissor lever and the bottom end of the second scissor lever to move away from or approach each other, the top end of the first scissor lever and the bottom end of the second scissor lever approach or move away from each other, and the diameter of the wheeled structure becomes smaller or larger; the two forked ends of the V-shaped scissor part move away from or approach each other, the end parts of the first arc-shaped scissor lever and the second arc-shaped scissor lever respectively connected with the V-shaped scissor part move away from or approach each other, and the wheel surface of the wheeled structure becomes narrower or wider. The wheeled structure of the present application can increase or decrease the diameter of the wheel by the radius of the telescopic wheel, so as to adapt to different road surface heights and slopes; the surface shape of the wheel can be adjusted to meet different terrains and driving requirements, so as to improve the stability of the vehicle, especially when driving at high speed or turning, the risk of rollover is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a schematic diagram of the assembly structure of the variable wheeled unit of the present application.

[0016] Fig. 2 It is a whole structure diagram of the wheeled structure with smaller diameter and wider wheel surface.

[0017] Fig. 3 It is a whole structure diagram of the wheeled structure with larger diameter and narrower wheel surface.

[0018] In the figure, 1 is a center shaft, 2 is a first center support, 201 is a first connecting shaft, 3 is a second center support, 301 is a second connecting shaft, 4 is a variable wheeled unit, 401 is a first scissor lever, 402 is a second scissor lever, 403 is a first support lever, 404 is a second support lever, 405 is a first arc-shaped scissor lever, 406 is a second arc-shaped scissor lever, and 407 is a third arc-shaped scissor lever. DETAILED DESCRIPTION

[0019] In order to make the present application clearer and more understandable, the present application is further described in detail in combination with the accompanying drawings and examples, and it should be understood that the given examples are only one of the implementation manners, and do not represent all the examples.

[0020] Example one

[0021] In combination with Figs. 1-3The embodiment provides a variable-diameter and variable-tread wheel structure based on a scissor rod, which comprises a central shaft 1, a plurality of variable wheel units 4 connected to the central shaft 1 through a first central support 2 and a second central support 3, the plurality of variable wheel units 4 are uniformly and circumferentially arranged around the central shaft 1, the first central support 2 is fixedly sleeved on any end of the central shaft 1, and the second central support 3 is slidably sleeved on the other end of the central shaft 1; the variable wheel unit 4 comprises a first scissor rod 401 hinged at a bottom end to the first central support 2, a second scissor rod 402 hinged at a bottom end to the second central support 3 and a variable-tread assembly, the first scissor rod 401 and the second scissor rod 402 are cross-hinged, the top end of the first scissor rod 401 and the top end of the second scissor rod 402 are respectively hinged to the two sides of the variable-tread assembly through different support rods, and the variable-tread assembly is telescopic along the central shaft in an axial direction.

[0022] The wheel structure in the embodiment is single degree of freedom, and if the second central support 3 remains unchanged, the entire wheel structure can be kept in a stable state. In the embodiment, six groups of variable wheel units 4 are arranged, the six groups of variable wheel units 4 are elongated and contracted around the central shaft 1, and the six groups of variable wheel units 4 can form a complete wheel body.

[0023] Each variable wheel unit 4 comprises a variable-diameter structure and a variable-tread wheel structure, the variable-diameter structure comprises the first scissor rod 401, the second scissor rod 402 and the support rod, the variable-tread wheel structure is the variable-tread assembly, the two parts are related to and independent of each other, and the two parts are both realized in diameter and tread change through telescopic scissor rods.

[0024] Specifically, the variable-tread assembly comprises at least one X-shaped scissor member and a V-shaped scissor member oppositely arranged on the two sides of the X-shaped scissor member, the X-shaped scissor member and the V-shaped scissor member are connected in a row along the central shaft in an axial direction, and the two bifurcated ends of the V-shaped scissor member are hinged to the two bifurcated ends on the same side of the X-shaped scissor member. The X-shaped scissor member comprises a first arc-shaped scissor rod 405 and a second arc-shaped scissor rod 406 cross-hinged at a central point, the V-shaped scissor member comprises two third arc-shaped scissor rods 407 hingedly connected at end portions, and the first arc-shaped scissor rod 405, the second arc-shaped scissor rod 406 and the third arc-shaped scissor rod 407 are all arc-shaped members outward protruding away from the central shaft 1. The structure members in the variable-tread assembly adopt curved shapes, especially outward protruding arc-shaped members, which are beneficial to the stability of the wheel structure.

[0025] The variable wheel face assembly in the embodiment includes two V-shaped scissors arranged at the edges and one X-shaped scissors arranged in the middle. It is to be understood that the X-shaped scissors arranged in the middle can be provided in multiple numbers, and the multiple X-shaped scissors are connected in a row in the axial direction along the central axis. The connection between adjacent X-shaped scissors is that the first arc-shaped scissors lever 405 of one X-shaped scissors is hinged to the second arc-shaped scissors lever 406 of another X-shaped scissors, and the second arc-shaped scissors lever 406 of one X-shaped scissors is hinged to the first arc-shaped scissors lever 405 of another X-shaped scissors. Adjusting the intersection angle of one X-shaped scissors can make the intersection angle of other X-shaped scissors be adjusted synchronously, so that the synchronous action of the X-shaped scissors can be realized.

[0026] In the embodiment, the support rod includes a first support rod 403 and a second support rod 404. One end of the first support rod 403 is hinged to the first scissors lever 401, and the other end of the first support rod 403 is hinged to the bottom of the bifurcated root of any V-shaped scissors. One end of the second support rod 404 is hinged to the second scissors lever 402, and the other end of the second support rod 404 is hinged to the bottom of the bifurcated root of another V-shaped scissors. The support rod is used to connect the scissors lever and the variable wheel face assembly. When the diameter of the wheeled structure is reduced and the wheel face is widened, the support rod mainly provides support for the variable wheel face assembly. When the diameter of the wheeled structure is increased and the wheel face is narrowed, the support rod increases the length of the wheel diameter, and the entire mechanism has a certain degree of freedom through the support rod.

[0027] In the embodiment, the point at which the first scissors lever 401 and the second scissors lever 402 are hinged is arranged at the center of the two levers. In addition, the point at which the first arc-shaped scissors lever 405 and the second arc-shaped scissors lever 406 of the X-shaped scissors are hinged is also arranged at the center, thereby increasing the stability of the wheeled structure.

[0028] Specifically, the circumferential surface of the central shaft 1 is composed of multiple planes. The first central support 2 and the second central support 3 are each provided with a first connecting shaft 201 and a second connecting shaft 301 corresponding to the positions of the multiple planes. The first connecting shaft 201 is hinged to the bottom end of the first scissors lever 401, and the second connecting shaft 301 is hinged to the bottom end of the second scissors lever 402. The central shaft 1 in the embodiment is provided with six planes, and the first central support 2 and the second central support 3 are also provided with six connecting shafts for hinging the variable wheeled unit 4.

[0029] Embodiment two

[0030] The application also provides a use method of the wheeled structure with variable diameter and wheel face based on scissors levers.

[0031] Driving the second center support 3 on the central shaft 1 in the direction away from the first center support 2, the second center support 3 drives the second scissors lever 402 to move, and then the bottom end of the first scissors lever 401 and the bottom end of the second scissors lever 402 are away from each other, the top end of the first scissors lever 401 and the bottom end of the second scissors lever 402 are close to each other, the distance between the central shaft 1 and the variable wheel surface assembly is shortened, at this time the radius of the wheeled structure is smaller and then the diameter is smaller; further, the second scissors lever 402 drives the second support rod 404 to move, the second support rod 404 drives the V-shaped scissors connected thereto to move away from the other V-shaped scissors, the variable wheel surface assembly is stretched, the two forked ends of the V-shaped scissors are close to each other, the first arc-shaped scissors lever 405 and the second arc-shaped scissors lever 406 are close to each other, at this time the wheel surface of the wheeled structure is widened.

[0032] Driving the second center support 3 on the central shaft 1 in the direction close to the first center support 2, the second center support 3 drives the second scissors lever 402 to move, and then the bottom end of the first scissors lever 401 and the bottom end of the second scissors lever 402 are close to each other, the top end of the first scissors lever 401 and the bottom end of the second scissors lever 402 are away from each other, the distance between the central shaft 1 and the variable wheel surface assembly is lengthened, at this time the radius of the wheeled structure is larger and then the diameter is larger; further, the second scissors lever 402 drives the second support rod 404 to move, the second support rod 404 drives the V-shaped scissors connected thereto to move close to the other V-shaped scissors, the variable wheel surface assembly is shortened, the two forked ends of the V-shaped scissors are away from each other, the first arc-shaped scissors lever 405 and the second arc-shaped scissors lever 406 are away from each other, at this time the wheel surface of the wheeled structure is narrowed.

[0033] The specific embodiments of the application are described in detail above in combination with the drawings, but the application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the application, and still fall within the protection scope of the application.

Claims

1. A variable diameter and tread wheel structure based on a scissor lever, characterized by: The application relates to a variable wheel type unit, which comprises a central shaft (1) connected with a plurality of variable wheel type units (4) through a first central support (2) and a second central support (3), the plurality of variable wheel type units (4) are uniformly and circumferentially spaced around the central shaft (1), and the plurality of variable wheel type units (4) can form a complete wheel body; the first central support (2) is fixedly sleeved on any end of the central shaft (1), and the second central support (3) is slidably sleeved on the other end of the central shaft (1). The variable wheel type unit (4) comprises a first scissor lever (401) hinged at a bottom end to the first central support (2), a second scissor lever (402) hinged at a bottom end to the second central support (3) and a variable wheel surface assembly, the first scissor lever (401) and the second scissor lever (402) are cross-hinged, the top end of the first scissor lever (401) and the top end of the second scissor lever (402) are respectively hinged to the two sides of the variable wheel surface assembly through different support rods, and the variable wheel surface assembly is telescopic along the axial direction of the central shaft. The variable wheel surface assembly comprises at least one X-shaped scissor member and V-shaped scissor members oppositely arranged on the two sides of the X-shaped scissor member, the X-shaped scissor member and the V-shaped scissor members are connected in a row along the axial direction of the central shaft, and the two forked ends of the V-shaped scissor members are respectively hinged to the two forked ends on the same side of the X-shaped scissor member. The X-shaped scissor member comprises a first arc-shaped scissor lever (405) and a second arc-shaped scissor lever (406) cross-hinged at a central point, the V-shaped scissor member comprises two third arc-shaped scissor levers (407) hinged at the ends, and the first arc-shaped scissor lever (405), the second arc-shaped scissor lever (406) and the third arc-shaped scissor lever (407) are all arc-shaped members outwardly protruding in the direction away from the central shaft (1). A plurality of X-shaped scissor members are arranged in a row in one direction, and the connection mode between adjacent X-shaped scissor members is that the first arc-shaped scissor lever (405) of one X-shaped scissor member is hinged to the second arc-shaped scissor lever (406) of another X-shaped scissor member, and the second arc-shaped scissor lever (406) of one X-shaped scissor member is hinged to the first arc-shaped scissor lever (405) of another X-shaped scissor member. The support rod comprises a first support rod (403) and a second support rod (404), one end of the first support rod (403) is hinged to the first scissor lever (401), the other end of the first support rod (403) is hinged to the bottom of the forked root of any V-shaped scissor member, one end of the second support rod (404) is hinged to the second scissor lever (402), and the other end of the second support rod (404) is hinged to the bottom of the forked root of another V-shaped scissor member. The circumferential surface of the central shaft (1) is composed of multiple planes, the first central support (2) and the second central support (3) are both provided with a first connecting shaft (201) and a second connecting shaft (301) corresponding to the number of positions of the planes, the first connecting shaft (201) is hinged to the bottom end of the first scissor lever (401), and the second connecting shaft (301) is hinged to the bottom end of the second scissor lever (402).

2. A variable diameter and tread wheel structure based on a scissor lever according to claim 1, characterized in that: The point where the first scissor lever (401) and the second scissor lever (402) are hinged is located at the center of both.

3. The method of using a variable diameter and tread wheeled structure based on a scissor lever as claimed in claim 1, wherein, The method comprises the following steps: Driving the second central support (3) to move on the central shaft (1) in a direction away from the first central support (2), the second central support (3) drives the bottom end of the first scissor lever (401) and the bottom end of the second scissor lever (402) to move away from each other, the top end of the first scissor lever (401) and the bottom end of the second scissor lever (402) move closer to each other, the diameter of the wheeled structure becomes smaller, the two forked ends of the V-shaped scissor part move closer to each other, the end of the first arc-shaped scissor lever (405) and the second arc-shaped scissor lever (406) hinged to the V-shaped scissor part move closer to each other, and the wheel surface of the wheeled structure becomes wider. Driving the second central support (3) to move on the central shaft (1) in a direction close to the first central support (2), the second central support (3) drives the bottom end of the first scissor lever (401) and the bottom end of the second scissor lever (402) to move closer to each other, the top end of the first scissor lever (401) and the bottom end of the second scissor lever (402) move away from each other, the diameter of the wheeled structure becomes larger, the two forked ends of the V-shaped scissor part move away from each other, the end of the first arc-shaped scissor lever (405) and the second arc-shaped scissor lever (406) hinged to the V-shaped scissor part move away from each other, and the wheel surface of the wheeled structure becomes narrower.

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