Variable-diameter and wheel-face wheel type structure based on scissor-fork rods and using method of variable-diameter and wheel-face wheel type structure

Abstract

The invention relates to the technical field of wheels, and provides a variable-diameter and wheel-face wheel type structure based on shear fork rods and a using method.The variable-diameter and wheel-face wheel type structure comprises a center shaft, the center shaft is connected with a plurality of variable-wheel type units through a first center support and a second center support, and the variable-wheel type units are evenly arranged in the circumferential direction at intervals with the center shaft as the center; a plurality of variable wheel type units can form a complete wheel body; the first center support is fixedly arranged at any end of the center shaft in a sleeving mode, and the second center support is slidably arranged at the other end of the center shaft in a sleeving mode. The variable wheel type unit comprises a first shear fork rod, a second shear fork rod and a variable wheel face assembly, wherein the bottom end of the first shear fork rod is hinged to the first center support, the bottom end of the second shear fork rod is hinged to the second center support, and the variable wheel face assembly can stretch out and draw back in the axial direction of the center shaft. According to the scheme, the diameter and the wheel face shape of the wheel can be changed through connection of the shear fork rods so as to adapt to different terrains and driving conditions.

Description

Technical Field

[0001] The invention relates to the technical field of wheels, and in particular to a scissor-bar-based variable diameter and wheel surface wheel structure and a use method thereof. Background Art

[0002] Traditional wheeled structures may encounter various difficulties when facing complex terrains, such as rugged roads, soft sand or steep slopes, especially because 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 bar is a structural element used to support and stabilize objects, usually consisting of two or more crossed bars. It is designed to provide high strength and stability and is commonly used in the fields of construction, mechanical engineering, aerospace, etc.

[0004] The present invention applies scissor rods to the wheeled structure. On the one hand, the scissor rods can improve the stability and load-bearing capacity of the structure, and on the other hand, the diameter and wheel surface shape of the wheel can be changed to adapt to different terrains and driving conditions. Summary of the invention

[0005] In order to solve the problems existing in the background technology, the present invention proposes a variable diameter and wheel surface wheel structure based on a scissor rod, which adopts the following scheme: comprising a central axis, the central axis 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 arranged at even intervals in the circumferential direction with the central axis as the center, and 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 axis, and the second central support is slidably sleeved on the other end of the central axis;

[0006] The variable wheel unit includes a first scissors rod hinged to the first center support at the bottom end, a second scissors rod hinged to the second center support at the bottom end, and a variable wheel surface assembly. The first scissors rod and the second scissors rod are cross-hinged, and the top end of the first scissors rod and the top end of the second scissors rod 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 its center axis.

[0007] Furthermore, the wheel variable surface assembly includes at least one X-shaped scissors member and a V-shaped scissors member relatively arranged on both sides of the X-shaped scissors member, the X-shaped scissors member and the V-shaped scissors member are axially connected in a row along the central axis, and the two forked ends of the V-shaped scissors member are respectively hinged to the two forked ends on the same side of the X-shaped scissors member.

[0008] Furthermore, the X-shaped scissors-fork member includes a first arc-shaped scissors-fork rod and a second arc-shaped scissors-fork rod cross-hinged at a center point, and the V-shaped scissors-fork member includes two third arc-shaped scissors-fork rods hinged at the ends, and the first arc-shaped scissors-fork rod, the second arc-shaped scissors-fork rod and the third arc-shaped scissors-fork rod are all arc-shaped components convex outward in a direction away from the center axis.

[0009] Furthermore, a plurality of X-shaped scissors parts are provided, and the plurality of X-shaped scissors parts are connected in a row in one direction, and the connection mode between adjacent X-shaped scissors parts is as follows: the first arc-shaped scissors rod of one X-shaped scissors part is hinged to the second arc-shaped scissors rod of another X-shaped scissors part, and the second arc-shaped scissors rod of one X-shaped scissors part is hinged to the first arc-shaped scissors rod of another X-shaped scissors part.

[0010] Furthermore, the support rod includes a first support rod and a second support rod, one end of the first support rod is hinged to the first scissors rod, the other end of the first support rod is hinged to the bottom of the forked root of any one of the V-shaped scissors members, one end of the second support rod is hinged to the second scissors rod, and the other end of the second support rod is hinged to the bottom of the forked root of another of the V-shaped scissors members.

[0011] Furthermore, the circumferential surface of the central axis is composed of multiple planes, and the first central support and the second central support are both provided with a first connecting axis and a second connecting axis corresponding to the number and position of the planes, the first connecting axis is hinged to the bottom end of the first scissors rod, and the second connecting axis is hinged to the bottom end of the second scissors rod.

[0012] A method for using a wheel structure with a variable diameter and a wheel surface based on a scissor rod, comprising the following steps: driving a second central support to move on a central axis in a direction away from a first central support, the second central support driving the bottom end of a first scissor rod and the bottom end of a second scissor rod to move away from each other, the top end of the first scissor rod and the bottom end of the second scissor rod to move closer to each other, and the diameter of the wheel structure becomes smaller; the two forked ends of the V-shaped scissor rod move closer to each other, the ends of the first arc-shaped scissor rod and the second arc-shaped scissor rod hinged to the V-shaped scissor rod move closer to each other, and the wheel surface of the wheel structure becomes wider;

[0013] The second central support is driven to move on the central axis in a direction approaching the first central support, and the second central support drives the bottom end of the first scissors rod and the bottom end of the second scissors rod to approach each other, and the top end of the first scissors rod and the bottom end of the second scissors rod move away from each other, and the diameter of the wheel structure becomes larger; the two forked ends of the V-shaped scissors rod move away from each other, and the ends of the first arc-shaped scissors rod and the second arc-shaped scissors rod hinged to the V-shaped scissors rod move away from each other, and the wheel surface of the wheel structure becomes narrower.

[0014] The beneficial effects of the present invention are as follows: while the diameter is changed in this scheme, the wheel surface changes accordingly: the second center support is driven to move away from or toward the first center support, the second center support drives the bottom end of the first scissors rod and the bottom end of the second scissors rod to move away from or toward each other, the top end of the first scissors rod and the bottom end of the second scissors rod to move toward or away from each other, the diameter of the wheel structure becomes smaller or larger; the two forked ends of the V-shaped scissors rod move away from or toward each other, the ends of the first arc-shaped scissors rod and the second arc-shaped scissors rod respectively hinged to the V-shaped scissors rod move away from or toward each other, and the wheel surface of the wheel structure becomes narrower or wider. The wheel structure of this scheme can increase or decrease the diameter of the wheel by extending or retracting the radius of the wheel, so as to adapt to different road surface heights and slopes; different terrains and driving requirements can be achieved by adjusting the surface shape of the wheel to improve the stability of the vehicle, especially when driving at high speed or turning, to reduce the risk of rollover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the assembly structure of the variable wheel unit of the present invention;

[0016] Figure 2 This is the overall structural diagram of the wheel structure of the present invention with a smaller diameter and a wider wheel surface;

[0017] Figure 3 This is an overall structural diagram of the wheel structure of the present invention with an enlarged diameter and a narrowed wheel surface.

[0018] Numbers in the figure: 1, central axis; 2, first central support; 201, first connecting axis; 3, second central support; 301, second connecting axis; 4, variable wheel unit; 401, first scissors rod; 402, second scissors rod; 403, first support rod; 404, second support rod; 405, first arc-shaped scissors rod; 406, second arc-shaped scissors rod; 407, third arc-shaped scissors rod. DETAILED DESCRIPTION

[0019] In order to make the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the given embodiment is only one implementation method and does not represent all embodiments.

[0020] Embodiment 1

[0021] Combination Figure 1-Figure 3The present embodiment provides a variable diameter and wheel surface wheel structure based on a scissor-type rod, comprising a central axis 1, wherein the central axis 1 is connected to a plurality of variable wheel units 4 through a first central support 2 and a second central support 3, wherein the plurality of variable wheel units 4 are evenly spaced and arranged circumferentially around the central axis 1, wherein the first central support 2 is fixedly sleeved on either end of the central axis 1, and the second central support 3 is slidably sleeved on the other end of the central axis 1; the variable wheel unit 4 comprises a first scissor-type rod 401 hinged to the first central support 2 at the bottom end, a second scissor-type rod 402 hinged to the second central support 3 at the bottom end, and a variable wheel surface assembly, wherein the first scissor-type rod 401 and the second scissor-type rod 402 are cross-hinged, and the top end of the first scissor-type rod 401 and the top end of the second scissor-type rod 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 retractable along the axial direction of its central axis.

[0022] The wheel structure in this embodiment is a single degree of freedom. If the second central support 3 remains stationary, the entire wheel structure can be kept in a stable state. In this embodiment, six groups of variable wheel units 4 are provided. The six groups of variable wheel units 4 extend and contract around the central axis 1. The six groups of variable wheel units 4 can form a complete wheel body.

[0023] Each variable wheel unit 4 includes two parts: a variable diameter structure and a variable wheel surface wheel structure. The variable diameter structure includes a first scissors rod 401, a second scissors rod 402 and a support rod. The variable wheel surface wheel structure is a variable wheel surface assembly. The two parts are interrelated and independent of each other. Both parts realize changes in diameter and wheel surface through the extension and retraction of the scissors rod.

[0024] Specifically, the variable wheel surface assembly includes at least one X-shaped scissors member and a V-shaped scissors member arranged on both sides of the X-shaped scissors member. The X-shaped scissors member and the V-shaped scissors member are connected in a row along the central axis. The two forked ends of the V-shaped scissors member are respectively hinged to the two forked ends on the same side of the X-shaped scissors member. The X-shaped scissors member includes a first arc-shaped scissors rod 405 and a second arc-shaped scissors rod 406 cross-hinged at the center point. The V-shaped scissors member includes two third arc-shaped scissors rods 407 hinged at the ends. The first arc-shaped scissors rod 405, the second arc-shaped scissors rod 406 and the third arc-shaped scissors rod 407 are all arc-shaped components convex in a direction away from the central axis 1. The various structural members in the variable wheel surface assembly adopt a curved shape, especially a convex arc-shaped component, which is beneficial to the stability of the wheel structure.

[0025] The wheel-changing surface assembly in this embodiment includes two V-shaped scissor parts set at the edges and an X-shaped scissor part set at the middle. It should be understood that there can be multiple X-shaped scissor parts set at the middle, and the multiple X-shaped scissor parts are connected in a row along the axial direction of the central axis. The connection between adjacent X-shaped scissor parts is as follows: the first arc-shaped scissor rod 405 of one X-shaped scissor part is hinged to the second arc-shaped scissor rod 406 of another X-shaped scissor part, and the second arc-shaped scissor rod 406 of one X-shaped scissor part is hinged to the first arc-shaped scissor rod 405 of another X-shaped scissor part. By adjusting the crossing angle of one X-shaped scissor part, the crossing angles of other X-shaped scissor parts can be adjusted in the same way, so that the synchronous action of each X-shaped scissor part can be achieved.

[0026] In this embodiment, the support rods include 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 rod 401, and the other end of the first support rod 403 is hinged to the bottom of the forked root of any of the V-shaped scissor parts. One end of the second support rod 404 is hinged to the second scissor rod 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 part. The support rods are used to connect the scissor rods and the variable wheel surface assembly. When the diameter of the wheel structure becomes smaller and the wheel surface becomes wider, the support rods mainly provide support for the variable wheel surface assembly. When the diameter of the wheel structure becomes larger and the wheel surface becomes narrower, the support rods increase a certain length of the wheel diameter, and the support rods provide the entire mechanism with a certain degree of freedom.

[0027] In this example, the hinge point between the first scissor rod 401 and the second scissor rod 402 is set at the center of the two. In addition, the hinge point between the first arc-shaped scissor rod 405 and the second arc-shaped scissor rod 406 of the X-shaped scissor member is also set at the center, which increases the stability of the wheeled structure.

[0028] Specifically, the circumferential surface of the central axis 1 is composed of a plurality of planes, and the first central support 2 and the second central support 3 are both provided with a first connecting axis 201 and a second connecting axis 301 corresponding to the number and position of the planes, the first connecting axis 201 is hinged to the bottom end of the first scissor rod 401, and the second connecting axis 301 is hinged to the bottom end of the second scissor rod 402. In this embodiment, the central axis 1 is provided with six planes, and the corresponding first central support 2 and the second central support 3 are also provided with six connecting axes for articulating the variable wheel unit 4.

[0029] Embodiment 2

[0030] The present invention also provides a method for using the variable diameter and wheel surface wheel structure based on the scissor rod:

[0031] The second central support 3 is driven to move on the central axis 1 in a direction away from the first central support 2, and the second central support 3 drives the second scissors rod 402 to move, thereby making the bottom end of the first scissors rod 401 and the bottom end of the second scissors rod 402 move away from each other, and the top end of the first scissors rod 401 and the bottom end of the second scissors rod 402 approach each other, and the distance from the central axis 1 to the variable wheel surface assembly becomes shorter, and then the radius of the wheel structure becomes smaller and then the diameter becomes smaller; further, the second scissors rod 402 drives the second support rod 404 to move, and the second support rod 404 drives the V-shaped scissors member connected thereto to move in a direction away from the other V-shaped scissors member, and the variable wheel surface assembly is stretched, and the two forked ends of the V-shaped scissors member approach each other, and the ends of the first arc-shaped scissors rod 405 and the second arc-shaped scissors rod 406 respectively hinged to the V-shaped scissors member approach each other, and then the wheel surface of the wheel structure becomes wider.

[0032] The second center support 3 is driven to move on the center axis 1 in a direction close to the first center support 2, and the second center support 3 drives the second scissors rod 402 to move, so that the bottom end of the first scissors rod 401 and the bottom end of the second scissors rod 402 are close to each other, and the top end of the first scissors rod 401 and the bottom end of the second scissors rod 402 are away from each other, and the distance from the center axis 1 to the variable wheel surface assembly becomes longer, and the radius of the wheel structure becomes larger and then the diameter becomes larger; further, the second scissors rod 402 drives the second support rod 404 to move, and the second support rod 404 drives the V-shaped scissors member connected thereto to move in a direction close to another V-shaped scissors member, and the variable wheel surface assembly is shortened, and the two forked ends of the V-shaped scissors member are away from each other, and the ends of the first arc-shaped scissors rod 405 and the second arc-shaped scissors rod 406, which are respectively hinged to the V-shaped scissors member, are away from each other, and the wheel surface of the wheel structure becomes narrower.

[0033] The specific embodiments of the present invention are described in detail above with reference to the drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A variable diameter and wheel surface wheel structure based on a scissor rod, characterized in that: The invention comprises a central shaft (1), wherein the central shaft (1) is connected to a plurality of variable wheel units (4) via a first central support (2) and a second central support (3), wherein the plurality of variable wheel units (4) are evenly spaced and arranged in a circumferential direction with the central shaft (1) as the center, and the plurality of variable wheel units (4) can form a complete wheel body; the first central support (2) is fixedly sleeved on either 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) whose bottom end is hinged to the first central support (2), a second scissor rod (402) whose bottom end is hinged to the second central support (3), and a variable wheel surface assembly, wherein the first scissor rod (401) and the second scissor rod (402) are cross-hinged, and the top end of the first scissor rod (401) and the top end of the second scissor rod (402) are respectively hinged to 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 its central axis.

2. A variable diameter and wheel surface wheel structure based on a scissor rod according to claim 1, characterized in that: The variable wheel surface assembly includes at least one X-shaped scissors member and a V-shaped scissors member arranged on both sides of the X-shaped scissors member. The X-shaped scissors member and the V-shaped scissors member are axially connected in a row along the central axis, and the two forked ends of the V-shaped scissors member are respectively hinged to the two forked ends on the same side of the X-shaped scissors member.

3. A variable diameter and wheel surface wheel structure based on a scissor rod according to claim 2, characterized in that: The X-shaped scissors-fork member comprises a first arc-shaped scissors-fork rod (405) and a second arc-shaped scissors-fork rod (406) cross-hinged at a center point, and the V-shaped scissors-fork member comprises two third arc-shaped scissors-fork rods (407) whose ends are hinged, and the first arc-shaped scissors-fork rod (405), the second arc-shaped scissors-fork rod (406) and the third arc-shaped scissors-fork rod (407) are all arc-shaped components convex outward in a direction away from the central axis (1).

4. A variable diameter and wheel surface wheel structure based on a scissor rod according to claim 3, characterized in that: The X-shaped scissors-fork parts are provided in plurality, and the plurality of X-shaped scissors-fork parts are connected in a row in one direction, and the connection mode between adjacent X-shaped scissors-fork parts is as follows: the first arc-shaped scissors-fork rod (405) of one X-shaped scissors-fork part is hinged to the second arc-shaped scissors-fork rod (406) of another X-shaped scissors-fork part, and the second arc-shaped scissors-fork rod (406) of one X-shaped scissors-fork part is hinged to the first arc-shaped scissors-fork rod (405) of another X-shaped scissors-fork part.

5. The variable diameter and wheel surface wheel structure based on scissor rods according to claim 2, characterized in that: 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 scissors rod (401), the other end of the first support rod (403) is hinged to the bottom of the forked root of any one of the V-shaped scissors parts, one end of the second support rod (404) is hinged to the second scissors rod (402), and the other end of the second support rod (404) is hinged to the bottom of the forked root of another of the V-shaped scissors parts.

6. The variable diameter and wheel surface wheel structure based on scissor rods according to claim 2, characterized in that: The hinge point between the first scissor rod (401) and the second scissor rod (402) is located at the center of the two.

7. The variable diameter and wheel surface wheel structure based on scissor rods according to claim 1, characterized in that: The circumferential surface of the central axis (1) is composed of a plurality of planes. The first central support (2) and the second central support (3) are both provided with a first connecting axis (201) and a second connecting axis (301) corresponding to the number and position of the planes. The first connecting axis (201) is hinged to the bottom end of the first scissors rod (401), and the second connecting axis (301) is hinged to the bottom end of the second scissors rod (402).

8. A method for using a variable diameter and wheel-type structure based on a scissor rod as claimed in claim 3, characterized in that: The steps include: The second central support (3) is driven to move on the central axis (1) in a direction away from the first central support (2), and the second central support (3) drives the bottom end of the first scissors rod (401) and the bottom end of the second scissors rod (402) to move away from each other, and the top end of the first scissors rod (401) and the bottom end of the second scissors rod (402) are brought closer to each other, and the diameter of the wheel structure becomes smaller; the two forked ends of the V-shaped scissors rod are brought closer to each other, and the ends of the first arc-shaped scissors rod (405) and the second arc-shaped scissors rod (406) hinged to the V-shaped scissors rod are brought closer to each other, and the wheel surface of the wheel structure becomes wider; The second central support (3) is driven to move on the central axis (1) in a direction approaching the first central support (2), and the second central support (3) drives the bottom end of the first scissors rod (401) and the bottom end of the second scissors rod (402) to approach each other, and the top end of the first scissors rod (401) and the bottom end of the second scissors rod (402) move away from each other, and the diameter of the wheel structure increases; the two forked ends of the V-shaped scissors rod move away from each other, and the ends of the first arc-shaped scissors rod (405) and the second arc-shaped scissors rod (406) hinged to the V-shaped scissors rod move away from each other, and the wheel surface of the wheel structure becomes narrower.

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