Walking rubberized wheel

Abstract

The utility model relates to the technical field of rubber -coated wheel, concretely relates to a kind of rubber -coated wheel, including wheel hub and rubber tire;The rim of wheel hub is provided with first circumferential limiting unit and second circumferential limiting unit, and first circumferential limiting unit includes several first limiting grooves, and second circumferential limiting unit includes several second limiting grooves;Rubber tire is provided with first circumferential cooperation unit and second circumferential cooperation unit, and first circumferential cooperation unit includes several first limiting lugs, and second circumferential cooperation unit includes several second limiting lugs;First limiting groove is matched with first limiting lug, and second limiting groove is matched with second limiting lug.The utility model is provided with several first limiting grooves and second limiting grooves on the both sides of rim, and is provided with corresponding several first limiting lugs and several second limiting lugs on rubber tire, to enhance the bonding strength of wheel hub and rubber tire, to limit the relative movement of rubber tire and wheel hub in circumferential direction, avoid the loosening of both.

Description

Technical Field

[0001] This utility model relates to the field of rubber-coated wheel technology, specifically to a walking rubber-coated wheel. Background Technology

[0002] Rubber-coated wheels are a common industrial component, widely used in intelligent robots, logistics and transportation equipment, production line conveyor systems, and warehousing equipment. A typical rubber-coated wheel structure includes a hub made of metal or plastic and an elastic rubber tire (such as polyurethane or rubber) covering the outer circumference of the hub. The tire is fixed to the hub surface by vulcanization, casting, or fitting.

[0003] In practical applications, especially under high frequency, high load or drastic temperature changes, traditional rubber-coated wheels are prone to loosening at the interface between the wheel hub and the tire. This problem is mainly caused by the following reasons: (1) Single bonding method: Most existing rubber-coated wheels rely solely on the adhesive force between the tire and the wheel hub surface for fixation. After long-term stress or thermal cycling, the interfacial bonding force is easily weakened; (2) Difference in material properties: The thermal expansion coefficients of metal wheel hubs and elastic tires are quite different. When the temperature changes, the deformation of the two is not coordinated, which weakens the bonding strength.

[0004] The aforementioned problems not only shorten the service life of the rubber-coated wheels, but may also lead to unstable equipment operation, increased noise, or even unexpected shutdowns. Therefore, it is necessary to improve traditional rubber-coated wheels to reduce the risk of loosening. Utility Model Content

[0005] To address the shortcomings of existing rubber-coated wheels, this invention provides a walking rubber-coated wheel. By improving the hub and tire, several first and second limiting grooves are provided on both sides of the rim, and several first and second limiting protrusions are correspondingly provided on the tire. This enhances the bonding strength between the hub and the tire, thereby limiting the relative movement of the tire and hub in the circumferential direction and preventing them from loosening under harsh operating conditions.

[0006] The technical solution provided by this utility model is as follows: a rubber-coated wheel, comprising a hub and a rubber tire covering the outside of the hub; the hub includes a rim, and a first circumferential limiting unit and a second circumferential limiting unit are respectively provided on both sides of the rim, the first circumferential limiting unit including a plurality of first limiting grooves evenly distributed along the circumference, and the second circumferential limiting unit including a plurality of second limiting grooves evenly distributed along the circumference; a first circumferential mating unit and a second circumferential mating unit are respectively provided on both sides of the rubber tire, the first circumferential mating unit including a plurality of first limiting protrusions evenly distributed along the circumference, and the second circumferential mating unit including a plurality of second limiting protrusions evenly distributed along the circumference; the first limiting grooves on the first circumferential limiting unit are mated with the first limiting protrusions on the first circumferential mating unit, and the second limiting grooves on the second circumferential limiting unit are mated with the second limiting protrusions on the second circumferential mating unit, so as to restrict the relative movement of the rubber tire and the hub in the circumferential direction.

[0007] Optionally, there is a phase difference between the first circumferential limiting unit and the second circumferential limiting unit.

[0008] Optionally, the rim is provided with at least one circumferential limiting groove, and the inner side of the tire is provided with at least one circumferential rib. The circumferential limiting groove and the circumferential rib are configured to restrict the relative movement of the tire and the hub in the axial direction.

[0009] Optionally, the rim is provided with a first drainage hole that penetrates the side wall of the circumferential limiting groove along the axial direction; the circumferential rib is provided with a second drainage hole that penetrates through it, and the first drainage hole and the second drainage hole are connected.

[0010] Optionally, when a plurality of the aforementioned circumferential limiting grooves and a plurality of the aforementioned circumferential ribs are provided, the first drainage hole and the second drainage hole are both located on the same axis.

[0011] Optionally, the number of first limiting grooves in the first circumferential limiting unit is not equal to the number of second limiting grooves in the second circumferential limiting unit; and the number of first limiting protrusions in the first circumferential mating unit is not equal to the number of second limiting protrusions in the second circumferential mating unit.

[0012] Optionally, the hub includes spokes, and the first limiting groove and / or the second limiting groove are located on the radial extension line of the spokes.

[0013] Optionally, the tire is made of polyurethane.

[0014] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: Addressing the shortcomings of existing rubber-coated wheels, this utility model improves the hub and tire by providing several first and second limiting grooves on both sides of the rim, and correspondingly providing several first and second limiting protrusions on the tire. This enhances the bonding strength between the hub and the tire, thereby restricting the relative movement of the tire and hub in the circumferential direction and preventing them from loosening under harsh operating conditions. Overall, this utility model has a reasonable structure, high reliability, and is easy to implement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the rubber-coated walking wheel proposed in an embodiment of this utility model.

[0016] Figure 2 This is a schematic diagram of the wheel hub structure proposed in an embodiment of the present utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the rubber tire proposed in an embodiment of this utility model. Detailed Implementation

[0018] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0019] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The terms "first," "second," etc., used in this utility model are provided for the convenience of describing the technical solution of this utility model and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solution of this utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict, all of which are within the scope of protection claimed by this utility model.

[0020] Example 1 Combined with appendix Figure 1 To be continued Figure 3 This embodiment proposes a rubber-coated wheel, including a hub 1 and a rubber tire 2 covering the outside of the hub 1. The hub 1 includes a rim 10, and a first circumferential limiting unit and a second circumferential limiting unit are respectively provided on both sides of the rim 10. The first circumferential limiting unit includes a plurality of first limiting grooves 101 evenly distributed along the circumference, and the second circumferential limiting unit includes a plurality of second limiting grooves 102 evenly distributed along the circumference.

[0021] The rubber tire 2 is provided with a first circumferential mating unit and a second circumferential mating unit on both sides. The first circumferential mating unit includes a plurality of first limiting protrusions 201 evenly distributed along the circumference, and the second circumferential mating unit includes a plurality of second limiting protrusions 202 evenly distributed along the circumference.

[0022] The first limiting groove 101 on the first circumferential limiting unit is configured to cooperate with the first limiting protrusion 201 on the first circumferential mating unit, and the second limiting groove 102 on the second circumferential limiting unit is configured to cooperate with the second limiting protrusion 202 on the second circumferential mating unit, so as to limit the relative movement of the tire 2 and the wheel hub 1 in the circumferential direction.

[0023] Obviously, for the rubber-coated wheel of this embodiment, by improving the hub 1 and the tire 2, several first limiting grooves 101 and second limiting grooves 102 are provided on both sides of the rim 10, and several first limiting protrusions 201 and several second limiting protrusions 202 are correspondingly provided on the tire 2. The first limiting grooves 101 and the first limiting protrusions 201, and the second limiting grooves 102 and the second limiting protrusions 202 can form a locking mechanism to enhance the bonding strength between the hub 1 and the tire 2, thereby restricting the relative movement of the tire 2 and the hub 1 in the circumferential direction and preventing them from loosening under harsh use conditions.

[0024] In this embodiment, the rubber tire 2 is made of polyurethane with a hardness range of 80 to 84 degrees, which can ensure that the walking rubber-coated wheel keeps the noise relatively low when rolling.

[0025] Furthermore, there is a phase difference between the first circumferential limiting unit and the second circumferential limiting unit. This phase difference refers to the misalignment between adjacent first limiting protrusions 201 and second limiting protrusions 202 in the axial direction. Correspondingly, the first and second circumferential mating units on the tire 2 also form a misalignment to ensure proper fit. This misalignment further improves the connection between the wheel hub 1 and the tire 2, especially in heavy-duty environments. This misalignment allows for mutual compensation between the two sides of the wheel hub 1 and the tire 2; that is, a tighter connection on one side can compensate for insufficient tightness on the other side, leading to loosening between the tire 2 and the wheel hub 1.

[0026] Furthermore, since the first limiting groove 101 and the second limiting groove 102 may cause insufficient local strength in the hub 1, the first limiting groove 101 and / or the second limiting groove 102 are preferably located on the radial extension line of the spokes 11. In this way, the spokes 11 can compensate for some of the strength, thereby maintaining the overall strength of the hub 1, which helps to meet heavy load requirements.

[0027] The aforementioned embodiments can ensure that the tire 2 and the wheel hub 1 are limited in the circumferential direction. In order to further improve the bonding effect between the tire 2 and the wheel hub 1, in a preferred embodiment, at least one circumferential limiting groove 103 is provided on the rim 10, and at least one circumferential rib 203 is provided on the inner side of the tire 2. The circumferential limiting groove 103 and the circumferential rib 203 are configured to restrict the relative movement of the tire 2 and the wheel hub 1 in the axial direction.

[0028] Therefore, this implementation method further ensures that the rubber tire 2 and the wheel hub 1 are axially limited, thereby enabling the rubber-coated wheel to cope with more complex and severe working conditions and effectively reducing the risk of the rubber tire 2 and the wheel hub 1 becoming loose.

[0029] Furthermore, a first drainage hole 104 is provided on the rim 10, which axially penetrates the side wall of the circumferential limiting groove 103; a second drainage hole 204 is provided on the circumferential rib 203, and the first drainage hole 104 and the second drainage hole 204 are connected. Since there is an unavoidable gap between the tire 2 and the hub 1, when encountering a water-accumulated environment, water will continue to remain in the circumferential limiting groove 103. Due to the incompressible nature of liquids, the accumulated water may cause the tire 2 and the hub 1 to loosen under special working conditions. Therefore, the drainage hole is provided so that the accumulated water can be discharged from the circumferential limiting groove 103 as the tire 2 is squeezed, thereby preventing the tire 2 and the hub 1 from loosening.

[0030] Furthermore, the design of the first drain hole 104 and the second drain hole 204 facilitates the disassembly of the tire 2 and the wheel hub 1. Specifically, when it is necessary to remove the tire 2 from the wheel hub 1, the first drain hole 104 on one side of the rim 10 can be blocked, and compressed air can be introduced into the first drain hole 104 on the other side. At this time, the airflow will flow into the circumferential limiting groove 103 and other gaps between the tire 2 and the wheel hub 1, thereby causing the tire 2 to deform under the pressure of the internal compressed gas, thus making the gap between the tire 2 and the wheel hub 1 larger, which further facilitates the disassembly of the tire 2.

[0031] When a plurality of circumferential limiting grooves 103 and a plurality of circumferential protrusions 203 are provided, preferably, the first drain hole 104 and the second drain hole 204 are both located on the same axis. This embodiment can ensure a smoother drainage path for accumulated water, thereby ensuring more thorough drainage.

[0032] Furthermore, in other embodiments, the number of first limiting grooves 101 in the first circumferential limiting unit is not equal to the number of second limiting grooves 102 in the second circumferential limiting unit; and the number of first limiting protrusions 201 in the first circumferential mating unit is not equal to the number of second limiting protrusions 202 in the second circumferential mating unit. Since there are many application scenarios for rubber-coated wheels, in some application scenarios, such as the use of obstacle-crossing robots, there may be situations where the rubber-coated wheels are not in perpendicular contact with the ground. In such cases, the risk of loosening on the inner and outer sides of the rubber-coated wheels is different. To ensure that the hub 1 and the tire 2 do not loosen as much as possible, a clamping cavity needs to be formed in the limiting structure on one side. Therefore, the hub 1 needs more first limiting grooves 101 or second limiting grooves 102 on that side, and the corresponding side of the tire 2 also needs to be provided with more first limiting protrusions 201 or second limiting protrusions 202.

[0033] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A rubber-coated wheel for walking, characterized in that, Includes a wheel hub (1) and a rubber tire (2) covering the outside of the wheel hub (1); The hub (1) includes a rim (10), and a first circumferential limiting unit and a second circumferential limiting unit are respectively provided on both sides of the rim (10). The first circumferential limiting unit includes a plurality of first limiting grooves (101) evenly distributed along the circumferential direction, and the second circumferential limiting unit includes a plurality of second limiting grooves (102) evenly distributed along the circumferential direction. The rubber tire (2) is provided with a first circumferential mating unit and a second circumferential mating unit on both sides. The first circumferential mating unit includes a plurality of first limiting protrusions (201) evenly distributed along the circumferential direction, and the second circumferential mating unit includes a plurality of second limiting protrusions (202) evenly distributed along the circumferential direction. The first limiting groove (101) on the first circumferential limiting unit is configured to cooperate with the first limiting protrusion (201) on the first circumferential mating unit, and the second limiting groove (102) on the second circumferential limiting unit is configured to cooperate with the second limiting protrusion (202) on the second circumferential mating unit, so as to restrict the relative movement of the tire (2) and the wheel hub (1) in the circumferential direction.

2. The rubber-coated wheel according to claim 1, characterized in that, There is a phase difference between the first circumferential limiting unit and the second circumferential limiting unit.

3. A rubber-coated wheel for walking according to claim 1, characterized in that, The rim (10) is provided with at least one circumferential limiting groove (103), and the inner side of the tire (2) is provided with at least one circumferential rib (203). The circumferential limiting groove (103) and the circumferential rib (203) are configured to restrict the relative movement of the tire (2) and the hub (1) in the axial direction.

4. A rubber-coated wheel for walking according to claim 3, characterized in that, The rim (10) is provided with a first drainage hole (104), which penetrates the side wall of the circumferential limiting groove (103) along the axial direction; the circumferential rib (203) is provided with a penetrating second drainage hole (204), which is connected to the first drainage hole (104) and the second drainage hole (204).

5. A rubber-coated wheel for walking according to claim 4, characterized in that, When a plurality of the aforementioned circumferential limiting grooves (103) and a plurality of the aforementioned circumferential ribs (203) are provided, the first drainage hole (104) and the second drainage hole (204) are both located on the same axis.

6. A rubber-coated wheel for walking according to claim 1, characterized in that, The number of the first limiting grooves (101) in the first circumferential limiting unit is not equal to the number of the second limiting grooves (102) in the second circumferential limiting unit; and the number of the first limiting protrusions (201) in the first circumferential mating unit is not equal to the number of the second limiting protrusions (202) in the second circumferential mating unit.

7. A rubber-coated wheel for walking according to claim 1, characterized in that, The hub (1) includes spokes (11), and the first limiting groove (101) and / or the second limiting groove (102) are located on the radial extension line of the spokes (11).

8. A rubber-coated wheel for walking according to any one of claims 1-7, characterized in that, The rubber tire (2) is made of polyurethane.

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