Rubber track for converting wheel drive into crawler drive and its application

Abstract

The present invention discloses a rubber track that can be used in cooperation with vehicle tires to convert wheeled drive into tracked drive, including an annular rubber body composed of a wheel-side rubber and a ground-contact side rubber; tread blocks are provided on the outer peripheral surface of the ground-contact side rubber; on the inner peripheral surface of the wheel-side rubber, at the middle position, drive protrusions and drive grooves are provided; the drive protrusions cooperate with the tread grooves on the outer peripheral surface of the tire, and the drive grooves cooperate with the tread protrusions on the outer peripheral surface of the tire, so as to achieve the transmission connection between the rubber track and the tire. The rubber track of the present application is provided with a specific transmission structure on the inner peripheral surface of the rubber body, which can cooperate with the tread structure on the vehicle tire to achieve the transmission connection between the rubber track and the tire, convert the wheeled drive of the vehicle into tracked drive, so that different drive modes can be selected according to needs to meet the operation requirements of different working conditions. Correspondingly, the present invention also provides a wheel-track composite walking mechanism using the above rubber track.

Description

Technical Field

[0001] The present invention relates to a rubber track, and more particularly to a rubber track for converting wheel drive into track drive and a wheel-track composite walking mechanism using the rubber track. Background Art

[0002] The driving forms of vehicles are divided into two types: wheel drive and track drive. Wheel drive has a fast walking speed, but the contact area between the wheels and the ground is small, which is suitable for walking on hard flat roads. When the vehicle walks on soft farmland, muddy roads or snow-ice-covered roads, the ground adhesion is small, the walking is not stable enough, and phenomena such as tire skidding and getting stuck in the mud often occur, affecting the progress of the vehicle and increasing potential safety hazards; Track drive has a large grounding area, the vehicle has strong terrain adaptability, high obstacle-crossing ability and good environmental adaptability in complex environments, and is suitable for soft terrains with complex terrains, but the walking speed is slow. In some special application road conditions, such as large farms with complex working conditions, a single walking method cannot meet the use requirements.

[0003] Chinese Patent CN201920953594.6 discloses a lifting track frame wheel-track composite chassis, including a chassis frame, a wheel walking mechanism, a track walking mechanism, etc. The track walking mechanism is connected to the chassis frame through a track vertical lifting mechanism to realize the vertical lifting movement of the track, and through a track horizontal telescoping mechanism, the horizontal telescoping movement of the track is realized. This lifting track frame wheel-track composite chassis can switch between a track walking device and a tire walking device to meet the adaptation to different road conditions. However, the structure of the entire chassis is very complex, and it is large in volume and heavy in weight. After it is applied to a vehicle, the vehicle consumes a large amount of energy during driving and has low working efficiency. Therefore, it is necessary to develop new technologies to realize the conversion between wheel drive and track drive. Summary of the Invention

[0004] In order to overcome the above problems existing in the prior art, the present application provides a rubber track that can be used in cooperation with the tires of a vehicle and is used to convert wheel drive into track drive. The rubber track of the present application is provided with a specific transmission structure on the inner circumferential surface of the rubber body, which can cooperate with the tread structure on the vehicle tire to realize the transmission connection between the rubber track and the tire, and convert the wheel drive of the vehicle into track drive. Thus, different driving methods can be selected according to needs to meet the operation requirements of different working conditions. Moreover, after the wheel drive is switched to track drive by using the rubber track of the present application, since it is driven by the vehicle tire, there is no need to additionally set up a traditional track drive wheel mechanism, which will not cause problems such as complex chassis, large volume, high energy consumption and low working efficiency. Correspondingly, the present application also provides a wheel-track composite walking mechanism using the above rubber track.

[0005] For a rubber crawler belt, the technical solution of the present application is as follows:

[0006] A rubber crawler belt for converting wheel drive into crawler drive, comprising an annular rubber body composed of a wheel-side rubber and a ground-contact side rubber; a reinforcing layer is provided inside the rubber body; tread blocks are provided on the outer peripheral surface of the ground-contact side rubber; on the inner peripheral surface of the wheel-side rubber, at the middle position, drive protrusions and drive grooves are provided, the drive protrusions are used to cooperate with the tread grooves on the outer peripheral surface of the vehicle tire, and the drive grooves are used to cooperate with the tread protrusions on the outer peripheral surface of the tire; during use, the rubber crawler belt is sleeved on the outside of the tire, the drive protrusions are engaged with the tread grooves, and the drive grooves are engaged with the tread protrusions, so as to realize the transmission connection between the rubber crawler belt and the tire.

[0007] Compared with the prior art, the rubber crawler belt for converting wheel drive into crawler drive of the present application is provided with drive protrusions and drive grooves on the inner peripheral surface of the rubber body, which can cooperate with the tread grooves and tread protrusions on the vehicle tire, realize the transmission connection between the rubber crawler belt and the vehicle tire, and convert the wheel drive of the vehicle into crawler drive, so that different drive modes can be selected according to needs to meet the operation requirements of different working conditions. When the vehicle needs to drive on a soft and muddy road surface, the rubber crawler belt of the present application can be assembled outside the tire to increase the ground contact area, prevent the tire from sinking, reduce the damage to the soil, and at the same time make the walking more stable; when the vehicle needs to drive on a hard soil road surface or a cement road surface, the rubber crawler belt can be removed to realize the fast walking of the vehicle, and the use flexibility is high. In addition, after the wheel drive is switched to crawler drive by using the rubber crawler belt of the present application, since it is driven by the vehicle tire, there is no need to additionally provide a traditional crawler drive wheel mechanism, which will not cause problems such as complex chassis, large volume, high energy consumption, and low working efficiency.

[0008] As an optimization, in the rubber crawler belt for converting wheel drive into crawler drive described above, the drive protrusions are divided into left drive protrusions and right drive protrusions, the left drive protrusions and the right drive protrusions are arranged on both sides of the crawler center line to form an inverted V-shaped structure, and are evenly distributed along the circumferential direction of the crawler; the left drive protrusions and the right drive protrusions are staggeredly distributed in the circumferential direction of the rubber crawler belt. Thus, when cooperating with a commonly used inverted V-shaped tread tire, the contact area of the transmission part is large, it is not easy to be damaged, and the service life is long. Further, a limit hook is provided at the inner end of the drive protrusion. Thus, when the drive protrusions on the rubber crawler belt are engaged with the tread grooves on the vehicle tire, the limit hook can hook the inner end of the tread protrusion to play a limiting role and prevent the rubber crawler belt from sliding during driving.

[0009] As an optimization, in the aforementioned rubber crawler for converting wheel drive into crawler drive, the tread blocks are divided into left tread blocks and right tread blocks. The left tread blocks and right tread blocks are arranged on both sides of the center line of the rubber crawler to form a V-shaped structure and are evenly distributed along the circumferential direction of the rubber crawler; the left tread blocks and right tread blocks are staggeredly distributed in the circumferential direction of the rubber crawler. Thereby, the grip performance of the rubber crawler on muddy and snowy ground can be improved, and the situation of fracture at the ends of the tread blocks during the use of the rubber crawler can also be reduced, improving the strength and service life of the rubber crawler.

[0010] Furthermore, the side surface of the tread block is curved and trapezoidal in cross-section with a narrower upper part and a wider lower part. Thereby, it is easier for substances such as dust embedded between adjacent tread blocks to fall off, ensuring that the grip of the rubber crawler during driving can be maintained stably, thus facilitating the smooth movement of the rubber crawler and having good use effects.

[0011] For the traveling mechanism, the technical solution of the present application is: a wheel-track compound traveling mechanism, including a rubber crawler and a tire; the rubber crawler is sleeved outside the tire, and the top and bottom of the tire are in contact with the inner circumferential surface of the rubber crawler; on both sides of the tire, a tension wheel in contact with the inner circumferential surface of the rubber crawler is respectively provided, making the grounded part of the rubber crawler in a strip shape; the rubber crawler includes an annular rubber body composed of a wheel-side rubber and a grounded-side rubber; a reinforcing layer is provided inside the rubber body; tread blocks are provided on the outer circumferential surface of the grounded-side rubber; on the inner circumferential surface of the wheel-side rubber, at the middle position, driving protrusions and driving grooves are provided. Correspondingly, on the outer circumferential surface of the tire, tread grooves and tread protrusions are provided; the tread protrusions are engaged with the driving grooves, and the tread grooves are engaged with the driving protrusions.

[0012] Compared with the prior art, the wheel-track compound traveling mechanism of the present application is compact in structure and convenient to use. It includes a tire and a rubber crawler sleeved outside the tire, and can realize the switching between two modes of wheel drive and crawler drive by disassembling and assembling the rubber crawler, meeting the requirements for different road conditions, with simple operation and good practicability.

[0013] As an optimization, in the aforementioned wheel-track compound traveling mechanism, the driving protrusions are divided into left driving protrusions and right driving protrusions. The left driving protrusions and right driving protrusions are arranged on both sides of the center line of the crawler to form a V-shaped structure and are evenly distributed along the circumferential direction of the crawler; the left driving protrusions and right driving protrusions are staggeredly distributed in the circumferential direction of the rubber crawler. Correspondingly, the tire is an eight-shaped tread tire. Thereby, when the rubber crawler and the tire cooperate, the contact area of the transmission part is large, it is not easy to be damaged, and the service life is long.

[0014] Further, a limiting hook is provided at the inner end of the driving protrusion. When the driving protrusions on the rubber track engage with the tread grooves on the tire, the limiting hook can hook the inner end of the tread protrusion to play a limiting role and prevent the rubber track from sliding during driving. Further, two surfaces are provided at the inner end of the tread protrusion and are in a V shape, and the limiting surface on the outer side cooperates with the end of the limiting hook. Thus, it is easier for the limiting hook to hook the end of the tread protrusion.

[0015] As an optimization, in the aforementioned wheel-track composite walking mechanism, the tread blocks are divided into left tread blocks and right tread blocks. The left tread blocks and the right tread blocks are arranged on both sides of the center line of the rubber track to form a V-shaped structure and are evenly distributed along the circumferential direction of the rubber track; the left tread blocks and the right tread blocks are staggeredly distributed in the circumferential direction of the rubber track. Thus, the gripping performance of the rubber track on muddy and snowy ground can be improved, and the situation where the ends of the tread blocks break during the use of the rubber track can also be reduced, improving the strength and service life of the rubber track. Further, the side surface of the tread block is curved and trapezoidal in cross-section with a narrower upper part and a wider lower part. Thus, substances such as dust embedded between adjacent tread blocks are more likely to fall off, facilitating the smooth movement of the rubber track and having a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the wheel-track composite walking mechanism of the present application;

[0017] Figure 2 is Figure 1 the front view of the wheel-track composite walking mechanism in

[0018] Figure 3 is Figure 2 the sectional view taken along the line A-A in

[0019] Figure 4 is Figure 3 the enlarged schematic view of part B in

[0020] Figure 5 is a schematic diagram of the structure of the rubber track of the present application;

[0021] Figure 6 is a schematic diagram of the structure of the tire in the present application.

[0022] The reference signs in the drawings are: 1 - rubber body, 101 - tread block, 1011 - side surface, 102 - driving protrusion, 1021 - limiting hook, 103 - driving groove; 2 - tire, 201 - tread protrusion, 2011 - limiting surface, 202 - tread groove; 3 - tensioning wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present application will be further described below in conjunction with the accompanying drawings and embodiments, but it shall not be used as a basis for limiting the present application. In the following embodiments, the structures that are not specifically described or not detailedly shown in the drawings are all common technical knowledge in the art.

[0024] Embodiment:

[0025] Referring to Figure 5 , the rubber track of the present application for converting wheel drive into crawler drive includes an annular rubber body 1 composed of a wheel-side rubber and a ground-side rubber; a reinforcing layer is provided inside the rubber body 1; tread blocks 101 are provided on the outer peripheral surface of the ground-side rubber; on the inner peripheral surface of the wheel-side rubber, at the middle position, drive protrusions 102 and drive grooves 103 are provided. The drive protrusions 102 are used to cooperate with the tread grooves 201 on the outer peripheral surface of the vehicle tire 2, and the drive grooves 103 are used to cooperate with the tread protrusions 202 on the outer peripheral surface of the tire 2. When in use, the rubber track is sleeved on the outside of the tire 2, the drive protrusions 102 are engaged with the tread grooves 201, and the drive grooves 103 are engaged with the tread protrusions 202, so as to realize the transmission connection between the rubber track and the tire 2.

[0026] In this embodiment, the drive protrusions 102 are divided into left drive protrusions and right drive protrusions. The left drive protrusions and the right drive protrusions are arranged on both sides of the crawler center line to form a V-shaped structure and are evenly distributed along the circumferential direction of the crawler; the left drive protrusions and the right drive protrusions are staggeredly distributed in the circumferential direction of the rubber track. Thus, when cooperating with a common V-shaped tread tire, the contact area of the transmission part is large, it is not easy to be damaged, and the service life is long.

[0027] Furthermore, a limit hook 1021 is provided at the inner end of the drive protrusion 102. Thus, when the drive protrusion 102 on the rubber track is engaged with the tread groove 202 on the tire 2, the limit hook 1021 can hook the inner end of the tread protrusion 201 to play a limiting role and prevent the rubber track from sliding during driving.

[0028] In this embodiment, the tread blocks 101 are divided into left tread blocks and right tread blocks. The left tread blocks and the right tread blocks are arranged on both sides of the rubber track center line to form a V-shaped structure and are evenly distributed along the circumferential direction of the rubber track; the left tread blocks and the right tread blocks are staggeredly distributed in the circumferential direction of the rubber track. Thus, the grip performance of the rubber track on muddy and snowy ground can be improved, and the situation that the ends of the tread blocks 101 are broken during the use of the rubber track can also be reduced, and the strength and service life of the rubber track can be improved.

[0029] Furthermore, the side surface 1011 of the pattern block 101 is curved, and the cross section is a trapezoidal shape that is narrow at the top and wide at the bottom. Therefore, dust and other materials embedded between adjacent pattern blocks 101 are easier to fall off, ensuring that the grip of the rubber track can remain stable during driving, thereby facilitating the smooth running of the rubber track and achieving good use effect.

[0030] As a specific application of the rubber track in this embodiment:

[0031] See also Figures 1 to 6 The wheel-track composite walking mechanism comprises a rubber crawler track and a tire 2; the rubber crawler track is sleeved on the outer side of the tire 2, and the top and bottom of the tire 2 are in contact with the inner circumference of the rubber crawler track; on both sides of the tire 2, there is respectively provided a tensioning wheel 3 which contacts with the inner circumference of the rubber crawler track (the tensioning wheel 3 is of a structure with large ends and a small middle, and the two large ends are respectively located on both sides of the driving protrusion 102; the tensioning wheel 3 can be installed by the user under the condition that the chassis space allows, or it can be installed by the vehicle manufacturer when leaving the factory Configuration); a pattern groove 202 and a pattern protrusion 201 are provided on the outer circumference of the tire 2; the pattern protrusion 201 is meshed with the driving groove 103 on the inner circumference of the rubber body 1, and the pattern groove 202 is meshed with the driving protrusion 102 on the inner circumference of the rubber body 1; the tire 2 is an agricultural tractor tire with a figure eight pattern; the inner end of the pattern protrusion 201 is provided with two surfaces and is V-shaped, and the limiting surface 2011 located on the outer side cooperates with the limiting hook 1021 at the inner end of the driving protrusion 102.

[0032] As a specific application of the above-mentioned wheel-track composite walking mechanism:

[0033] The wheeled tractor comprises a running mechanism; the running mechanism is the aforementioned wheel-track composite running mechanism. When the wheeled tractor is traveling on a soft and muddy road, the rubber track is in direct contact with the ground, the running is stable, and the ground contact area is large, which can prevent the damage to the soil caused by the tire 2 sinking; when the wheeled tractor is traveling on a road with hard soil or a cement road, the rubber track can be removed according to the needs of the user, so that the tire 2 is in direct contact with the ground, and the wheeled tractor can travel quickly.

[0034] In addition, the rubber crawler of the present application is not limited to application in wheeled tractors, but can also be applied to other vehicles.

[0035] The above general description of the invention involved in the present application and the description of its specific embodiments should not be construed as limiting the technical solution of the invention. Those skilled in the art can, based on the disclosure of the present application, add, subtract, or combine the disclosed technical features in the above general description or / and specific embodiments (including examples) without violating the constituent elements of the invention involved, so as to form other technical solutions within the scope of protection of the present application.

Claims

1. Wheel-track composite walking mechanism, Characterized in that: It includes a rubber track and a tire (2); the rubber track is sleeved on the outside of the tire (2), and the top and bottom of the tire (2) are in contact with the inner peripheral surface of the rubber track; on both sides of the tire (2), a tension wheel (3) in contact with the inner peripheral surface of the rubber track is respectively provided, so that the grounded part of the rubber track is in a strip shape; the rubber track includes an annular rubber body (1) composed of a wheel-side rubber and a grounded-side rubber; a reinforcing layer is provided inside the rubber body (1); tread blocks (101) are provided on the outer peripheral surface of the grounded-side rubber; on the inner peripheral surface of the wheel-side rubber, at the middle position, driving protrusions (102) and driving grooves (103) are provided. Correspondingly, tread grooves (202) and tread protrusions (201) are provided on the outer peripheral surface of the tire (2); the tread protrusions (201) are engaged with the driving grooves (103), and the tread grooves (202) are engaged with the driving protrusions (102); a limiting hook (1021) is provided at the inner end of the driving protrusion (102); two surfaces are provided at the inner end of the tread protrusion (201) and are in a V shape, and the limiting surface (2011) on the outer side is matched with the limiting hook (1021).

2. The wheel-track composite walking mechanism according to claim 1, Characterized in that: The driving protrusions (102) are divided into left driving protrusions and right driving protrusions. The left driving protrusions and the right driving protrusions are arranged on both sides of the center line of the rubber track to form an eight-shaped structure and are evenly distributed along the circumferential direction of the rubber track; the left driving protrusions and the right driving protrusions are staggeredly distributed in the circumferential direction of the rubber track.

3. The wheel-track composite walking mechanism according to claim 1, Characterized in that: The tread blocks (101) are divided into left tread blocks and right tread blocks. The left tread blocks and the right tread blocks are arranged on both sides of the center line of the rubber track to form an eight-shaped structure and are evenly distributed along the circumferential direction of the rubber track; the left tread blocks and the right tread blocks are staggeredly distributed in the circumferential direction of the rubber track.

4. The wheel-track composite walking mechanism according to claim 1, Characterized in that: The side surface (1011) of the tread block (101) is curved and has a trapezoidal cross-section with a narrow upper part and a wide lower part.

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