Deformable wheel telescopic track structure

Abstract

The utility model discloses a deformable wheel telescopic track structure which comprises an inner layer track shoe located on the inner layer and an outer layer track shoe located on the outer layer when a wheel is in a contraction state, the inner layer track shoe and the outer layer track shoe are arranged in a spaced mode, and an elastic mechanism used for pulling the adjacent outer layer track shoe to be close to each other is arranged on the inner layer track shoe. The elastic mechanism comprises sliding blocks and sliding grooves formed in the surface of the inner-layer track shoe, the ends of the sliding blocks are embedded in the sliding grooves, the sliding blocks in the same sliding groove are connected through return springs, and the sliding blocks are connected with the corresponding outer-layer track shoe in a running fit mode. Relative movement and resetting of the outer-layer track shoe and the inner-layer track shoe are achieved through the elastic mechanism, wheel form switching can be conveniently and rapidly carried out, meanwhile, the rotation resetting mechanism is arranged between the outer-layer track shoe and the sliding block, movement of the outer-layer track shoe can be reduced, and the structural stability in the wheel moving process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of deformable wheels, in particular to a deformable wheel telescopic crawler structure. Background Art

[0002] Existing vehicle tire designs are usually limited to wheel or track types. In the retracted state, the outer track plate is only kept fixed by elastic components, which is easily affected by ground friction during driving and causes deviation, resulting in poor stability, affecting the stability of vehicle driving. Utility Model Content

[0003] Technical purpose: In view of the shortcomings of existing deformable wheels, the utility model discloses a deformable wheel telescopic track structure that can provide wheel structure stability.

[0004] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution:

[0005] A deformable wheel telescopic track structure includes an inner track shoe that is in the inner layer when the wheel is in a retracted state and an outer track shoe that is in the outer layer. The inner track shoe and the outer track shoe are arranged at intervals, and an elastic mechanism is provided on the inner track shoe for pulling adjacent outer track shoes closer to each other. The elastic mechanism includes a slider and a slide groove provided on the surface of the inner track shoe, the end of the slider is embedded in the slide groove, and the sliders in the same slide groove are connected by a return spring. The slider is rotationally matched with the corresponding outer track shoe, and a rotation reset mechanism is provided at the matching position between the outer track shoe and the slider for driving the outer track shoe to rotate relative to the slider to return to a retracted state.

[0006] Preferably, the rotation reset mechanism of the present invention includes a sliding rod arranged on the side of the outer track shoe, the sliding rod is passed through the slider, and the rod body of the sliding rod is connected to the outer track shoe through a connecting rod; a torsion spring is arranged between the sliding rod and the slider, and the torsion spring applies torque to drive the slider and the sliding rod to rotate relative to each other.

[0007] Preferably, a rotation limiter is provided on the slider of the present invention for limiting the rotation angle with the slide rod. The rotation limiter is sleeved on the outer side of the slide rod and fixedly connected to the slider. The rotation limiter is located at the junction of the slide rod and the connecting rod. An arc groove matching the connecting rod is provided on the rotation limiter. The arc groove limits the maximum relative rotation angle of the slide rod and the slider while limiting the axial movement of the slide rod.

[0008] Preferably, the rotation limiting member of the present invention is provided with an adsorption plate on the side away from the outer track shoe. When the wheel is in the retracted state, the adsorption plates on the rotation limiting member adsorb each other to assist in fixing the outer track shoe.

[0009] Preferably, the inner track shoe of the present invention is provided with a limiting groove at the end portion along the direction in which the slide groove is opened, for limiting the sliding distance of the slide rod, and the limiting groove matches the shape of the slide rod.

[0010] Preferably, the slider of the present invention adopts an I-shaped structure, and a fixing groove is provided in the slide groove for limiting the end of the slider in the slide groove when the wheel is retracted.

[0011] Preferably, shielding plates are provided at the slot openings of the slide groove of the present invention, and gaps for movement of the slider are formed between the shielding plates.

[0012] Preferably, the outer track shoe of the present invention is provided with a honeycomb tire on the surface for contacting the ground.

[0013] Preferably, the honeycomb tire of the present invention comprises a rubber layer fixed to the outer track shoe, a pressure-resistant layer provided on the rubber layer, and an outer contact layer located on the outermost side, wherein the pressure-resistant layer adopts a shape memory alloy to form a honeycomb structure.

[0014] Preferably, the surface of the outer contact layer of the present invention is provided with a tire pattern.

[0015] Beneficial effects: The deformable wheel telescopic track structure provided by the utility model has the following beneficial effects:

[0016] 1. The utility model realizes the relative movement and reset of the outer track shoe and the inner track shoe through an elastic mechanism, which can conveniently switch the wheel shape. At the same time, a rotation reset mechanism is provided between the outer track shoe and the slider, which can reduce the movement of the outer track shoe and improve the stability of the structure during the movement of the wheel.

[0017] 2. The utility model sets a rotation limiter on the slider, and limits the rotation angle of the outer track shoe relative to the slider during the wheel deformation process through the boundary of the arc groove on the rotation limiter. The mechanical limit method is used to ensure the smooth movement of the outer track shoe during the wheel deformation process, and limit the further rotation of the outer track shoe after the deformation is in place, thereby ensuring the safety of the structure.

[0018] 3. The utility model provides an adsorption plate on the rotation limiter. The adsorption plate can adopt a magnetic structure. In the retracted state, it can cooperate with the fixing groove provided in the slide groove to further position and fix the position of the outer track shoe to avoid deviation and affect the normal driving of the vehicle.

[0019] 4. The utility model provides a shielding plate at the slot of the slide to protect the return spring and other structures in the slide, and a gap is left between the shielding plates for the sliding of the slider, so as not to affect the normal deformation switching of the wheel.

[0020] 5. The utility model has honeycomb tires on the outer track shoes. Compared with the wheel-type deformed wheels without honeycomb tires, the utility model can move on flat roads as smoothly as ordinary wheels, and can have a considerable speed with less noise and no bumps.

[0021] 6. The honeycomb tire of the present invention adopts a layered structure design. The honeycomb structure formed by shape memory alloy can make the wheel have better shock absorption ability and improve the stability of vehicle movement. The outer contact layer can be made of composite materials according to needs to solve the problems of wear resistance, elasticity, temperature resistance, corrosion resistance and grip. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0023] Figure 1 This is a schematic diagram of the overall structure of the deformable wheel of the utility model;

[0024] Figure 2 This is a structural diagram of the telescopic crawler of the utility model;

[0025] Figure 3 This is a structural diagram of the inner track shoe of the utility model;

[0026] Figure 4 This is a structural diagram of the inner track shoe slideway of the utility model;

[0027] Figure 5 This is the structural diagram of the rotation limiting member of the utility model;

[0028] Figure 6 This is a structural diagram of the honeycomb tire of the utility model;

[0029] Among them, 1-inner track shoe, 2-outer track shoe, 3-slider, 4-slide groove, 5-return spring, 6-slide rod, 7-connecting rod, 8-rotation limiter, 9-arc groove, 10-adsorption plate, 11-limiting groove, 12-fixing groove, 13-shielding plate, 14-honeycomb tire, 15-rubber layer, 16-pressure-resistant layer, 17-outer contact layer, 18-tire pattern. DETAILED DESCRIPTION

[0030] Reference will now be made in detail to the embodiments of the present disclosure, one or more examples of which are set forth herein below. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of the present disclosure, and is not intended to be limiting. On the contrary, the following description provides a convenient illustration of exemplary embodiments for implementing the present disclosure. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made within the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0031] like Figures 1-6 The figure shows a deformable wheel telescopic track structure disclosed by the present invention, including an inner track shoe 1 in the inner layer and an outer track shoe 2 in the outer layer in the retracted state of the wheel, the inner track shoe 1 and the outer track shoe 2 are arranged at intervals, and an elastic mechanism for pulling adjacent outer track shoes 2 closer to each other is provided on the inner track shoe 1, the elastic mechanism including a slider 3 and a slide groove 4 opened on the surface of the inner track shoe 1, the end of the slider 3 is embedded in the slide groove 4, the sliders 3 in the same slide groove 4 are connected by a return spring 5, a baffle 13 is provided at the notch of the slide groove 4, and a gap for the movement of the slider 3 is formed between the baffles 13; the slider 3 is rotationally matched with the corresponding outer track shoe 2, and a rotation reset mechanism for driving the outer track shoe 2 to rotate relative to the slider 3 and return to the retracted state is provided at the matching position between the outer track shoe 2 and the slider 3.

[0032] Specifically, the rotation reset mechanism of the present invention includes a slide bar 6 arranged on the side of the outer track shoe 2, the slide bar 6 is inserted into the slider 3, the rod body of the slide bar 6 is connected to the outer track shoe 2 through a connecting rod 7, and the inner track shoe 1 is provided with a limiting groove 11 at the end along the direction in which the slide groove 4 is opened, which is used to limit the sliding distance of the slide bar 6. The limiting groove 11 matches the shape of the slide bar 6 and limits the maximum sliding distance of the outer track shoe 2 to prevent the return spring 5 from failing due to excessive sliding distance; a torsion spring is provided between the slide bar 6 and the slider 3, and the torsion spring applies torque to drive the slider 3 and the slide bar 6 to rotate relative to each other; Figure 1 In the state shown, the left side is the position of the outer track shoe 2 relative to the inner track shoe 1 when the wheel is retracted. At this time, it is on the outside of the inner track shoe 1. When the wheel is deployed, the outer track shoe 2 moves to both sides along the slide groove and needs to move to a state flush with the inner track shoe 1. During this process, relative rotation will occur between the slide bar 6 and the slider 3. The setting of the torsion spring can improve the stability of the movement of the outer track shoe during the deformation process, and can also fix the position of the outer track shoe 2 to a certain extent.

[0033] To limit the rotation and enhance the structural safety, such as Figure 5As shown, a rotation limiter 8 for limiting the rotation angle with the slide bar 6 is provided on the slider 3 of the utility model. The rotation limiter 8 is sleeved on the outer side of the slide bar 6 and fixedly connected to the slider 3. The rotation limiter 8 is located at the junction of the slide bar 6 and the connecting rod 7. An arc groove 9 is provided on the rotation limiter 8 to match the connecting rod 7. The arc groove 9 limits the maximum relative rotation angle of the slide bar 6 and the slider 3 while limiting the axial movement of the slide bar 6; in addition, an adsorption plate 10 is provided on the rotation limiter 8 on the side away from the outer track shoe 2. When the wheel is in the retracted state, the adsorption plates 10 on the rotation limiter 8 are mutually adsorbed to assist in fixing the outer track shoe 2. The adsorption plate 10 adopts a magnetic fixation method, which can assist in fixing the position of the outer track shoe 2 when the wheel is retracted, thereby ensuring smooth operation of the vehicle.

[0034] The slider 3 of the present invention adopts an I-shaped structure, and a fixing groove 12 is provided in the chute 4 for limiting the end of the slider 3 located in the chute 4 when the wheel is retracted. When the wheel is retracted, when the end of the slider falls into the pre-designed fixing groove 12 in the chute 9, their positions are locked, thereby indirectly fixing the outer track shoe 2 and avoiding relative movement caused by ground friction.

[0035] In order to enable the modified wheel to be able to drive normally on the road like a normal rubber wheel, the outer track shoe 2 of the present invention is provided with a honeycomb tire 14 on the surface that contacts the ground; when in wheeled mode, the wheel only exposes the outer track shoe 2, and the outer track shoe 2 is spliced ​​into a ring section by section, and the honeycomb tire 14 connected thereto is also formed into a ring section by section, which is not much different from a normal wheel tire; compared to a wheeled deformed wheel without a honeycomb tire, the present invention can travel as smoothly on a flat road as an ordinary wheel, and can have a considerable speed, with less noise and no bumps. When switching to the crawler wheel structure for driving, the outer section of the honeycomb tire 14 is wider and the outer surface is relatively flat, which can maintain stability when adjacent honeycomb tires are separated. Specifically, Figure 6 As shown, the honeycomb tire 14 of the present invention includes a rubber layer 15 secured to the outer track shoe 2, a pressure-resistant layer 16 disposed on the rubber layer 15, and an outermost outer contact layer 17. The pressure-resistant layer 16 utilizes a honeycomb structure made of a shape memory alloy, primarily nickel-titanium and its derivatives. Its superelasticity effectively protects against bumpy and steep roads, while the shape memory effect of the metal also extends the tire's life. The outer contact layer 17 can be constructed of composite materials and multilayer structures, combining different types of rubber and additives to achieve an optimal performance balance. The material must possess a combination of wear resistance, elasticity, temperature resistance, and corrosion resistance. A tire tread pattern 18 can be provided on the surface of the outer contact layer 17 to enhance grip.

[0036] When in use, the telescopic crawler structure of the utility model cooperates with the shifting gear of the wheel through meshing, and when it is needed to switch to the crawler wheel structure, the outer track plate is driven to slide toward both sides of the inner track plate through the deformation drive assembly to expand, and the deformation assembly can be directly realized by using the mature drive structure in the existing technology; the telescopic crawler structure of the utility model can improve the stability of the wheel driving and ensure the excellent stability performance of the wheel in various complex environments.

Claims

1. A deformable wheel telescopic crawler structure, characterized in that: The invention relates to an inner track shoe (1) in the inner layer and an outer track shoe (2) in the outer layer in a wheel retracted state, wherein the inner track shoe (1) and the outer track shoe (2) are spaced apart, and an elastic mechanism for pulling adjacent outer track shoes (2) closer to each other is provided on the inner track shoe (1), and the elastic mechanism comprises a slider (3) and a slide groove (4) provided on the surface of the inner track shoe (1), the end of the slider (3) is embedded in the slide groove (4), and the sliders (3) in the same slide groove (4) are connected by a return spring (5), and the slider (3) is connected to the corresponding outer track shoe (2) in a rotational cooperation manner, and a rotation return mechanism for driving the outer track shoe (2) to rotate relative to the slider (3) and return to a retracted state is provided at the cooperation position between the outer track shoe (2) and the slider (3); The rotation reset mechanism includes a slide bar (6) arranged on the side of the outer track shoe (2), the slide bar (6) is inserted into the slider (3), and the rod body of the slide bar (6) is connected to the outer track shoe (2) through a connecting rod (7); a torsion spring is provided between the slide bar (6) and the slider (3), and a torque is applied by the torsion spring to drive the slider (3) and the slide bar (6) to rotate relative to each other; The slider (3) is provided with a rotation-limiting member (8) for limiting the rotation angle with the slider (6). The rotation-limiting member (8) is sleeved on the outer side of the slider (6) and fixedly connected to the slider (3). The rotation-limiting member (8) is located at the junction of the slider (6) and the connecting rod (7). An arc groove (9) is provided on the rotation-limiting member (8) and matches the connecting rod (7). The arc groove (9) limits the maximum relative rotation angle of the slider (6) and the slider (3) and limits the axial movement of the slider (6).

2. The deformable wheel telescopic track structure according to claim 1, characterized in that: The rotation limiting member (8) is provided with an adsorption plate (10) on a side away from the outer track shoe (2). When the wheel is in a retracted state, the adsorption plates (10) on the rotation limiting member (8) are adsorbed against each other to assist in fixing the outer track shoe (2).

3. The deformable wheel telescopic track structure according to claim 1, characterized in that: The inner track shoe (1) is provided with a limiting groove (11) at the end portion along the direction in which the slide groove (4) is opened, for limiting the sliding distance of the slide rod (6), and the limiting groove (11) matches the shape of the slide rod (6).

4. The deformable wheel telescopic track structure according to claim 1, characterized in that: The slider (3) adopts an I-shaped structure, and a fixing groove (12) is provided in the slide groove (4) for limiting the end of the slider (3) located in the slide groove (4) when the wheel is in a retracted state.

5. The deformable wheel telescopic track structure according to claim 1, characterized in that: A shielding plate (13) is provided at the notch of the slide groove (4), and a gap for the movement of the slider (3) is formed between the shielding plates (13).

6. The deformable wheel telescopic track structure according to claim 1, characterized in that: The outer track shoe (2) is provided with a honeycomb tire (14) on the surface for contacting the ground.

7. The deformable wheel telescopic track structure according to claim 6, characterized in that: The honeycomb tire (14) comprises a rubber layer (15) fixed to an outer track shoe (2), a pressure-resistant layer (16) disposed on the rubber layer (15), and an outer contact layer (17) located on the outermost side. The pressure-resistant layer (16) is formed of a honeycomb structure using a shape memory alloy.

8. The deformable wheel telescopic track structure according to claim 7, characterized in that: A tire pattern (18) is provided on the surface of the outer contact layer (17).

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