A kind of encapsulated guide wheel structure

Abstract

The utility model relates to mechanical equipment technical field, concretely relates to a rubber coated guide wheel structure. The utility model provides a rubber coated guide wheel structure, including base body and rubber coating, and the base body includes the body part and the connecting portion who connects each other, and the connecting portion extends along the body part circumferential extension setting. The connecting portion is configured as a boss, and the boss is arranged in a stepped arrangement along the radial direction of the body part, and the rubber coating completely covers the boss. The stepped boss structure replaces the traditional plane contact interface, the contact area of the base body and the rubber coating is expanded by using the trapezoidal section and the radial stepped arrangement, the shear force is converted into axial component force to reduce stress concentration, and the rigid framework formed by the boss provides embedded support for the rubber coating, thereby solving the technical problems that the existing rubber coated guide wheel is prone to interface degumming and rubber layer fatigue deformation.

Description

Technical Field

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

[0002] Rubber-coated guide wheels, as key components in industrial transmission systems, are mainly composed of a metal substrate and an elastic rubber coating. In traditional structures, the metal substrate is usually made of steel or aluminum alloy to provide structural strength, while the rubber coating is made of elastic materials such as polyurethane or rubber to achieve functions such as wear resistance and vibration damping.

[0003] However, the existing design has two significant drawbacks: First, the contact area between the adhesive layer and the substrate is too small, resulting in uneven distribution of interfacial pressure, which can easily lead to delamination during long-term use; Second, the traditional planar bonding method lacks a mechanical support structure, which means that the adhesive layer has to bear all the working stress alone, accelerating material fatigue.

[0004] More seriously, under dynamic operating conditions, this structural defect can create a vicious cycle: insufficient contact area leads to stress concentration, which in turn further weakens the connection strength. Especially under high-frequency impact loads, the rubber coating layer of traditional structures will exhibit significant creep deformation, severely affecting the service life and transmission accuracy of the guide wheel. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rubber-coated guide wheel structure, which solves the technical problems of interface delamination and adhesive layer fatigue deformation in existing rubber-coated guide wheels.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a rubber-coated guide wheel structure, including a substrate and a rubber coating layer. The substrate includes a body portion and a connecting portion that are interconnected, and the connecting portion extends circumferentially along the body portion. The connecting portion is configured as a boss, and the bosses are arranged in a stepped manner along the radial direction of the body portion. The rubber coating layer completely covers the bosses.

[0008] In one possible implementation, the boss has a trapezoidal cross-section along the axial direction of the body portion.

[0009] In one possible implementation, there are multiple bosses, which are arranged in a stepped manner along the radial direction of the body portion.

[0010] In one possible implementation, the height of the plurality of bosses decreases in the direction away from the body portion.

[0011] In one possible implementation, a heat dissipation groove is provided in the area of ​​the body near the connecting portion.

[0012] In one possible implementation, the substrate is made of a metallic material.

[0013] In one possible implementation, the coating layer is made of an elastic material.

[0014] The beneficial effects of this utility model are that, compared with the prior art, this utility model replaces the traditional planar contact interface with a stepped boss structure, expands the contact area between the substrate and the rubber layer by using a trapezoidal cross section and radial stepped arrangement, converts shear force into axial component force to reduce stress concentration, and provides embedded support for the rubber layer through the rigid skeleton formed by the boss, thereby solving the technical problems of interface delamination and rubber layer fatigue deformation that are common in existing rubber-coated guide wheels. Attached Figure Description

[0015] Figure 1 A cross-sectional schematic diagram of a rubber-coated guide wheel structure provided by this utility model.

[0016] Attached image labels:

[0017] 1. Rubber-coated guide wheel structure; 11. Substrate; 111. Body part; 112. Connecting part; 12. Rubber coating layer. Detailed Implementation

[0018] To solve the above-mentioned technical problems, this utility model provides a rubber-coated guide wheel structure. The technical solution and embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0019] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can refer to fixed connection, detachable connection, or integral connection; for those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0022] In traditional rubber-coated guide wheel manufacturing processes, the metal substrate and the rubber coating employ a planar contact interface design, resulting in insufficient bonding area and concentration of interfacial shear stress in a single planar direction. Due to the lack of a rigid support structure between the rubber coating and the substrate, stress concentration easily occurs at the adhesive bonding surface under dynamic loads, accelerating adhesive fatigue failure and ultimately leading to peeling and detachment of the rubber coating. This defect is particularly pronounced under cyclic impact load conditions, directly affecting the operational stability and service life of the guide wheel system.

[0023] To address the aforementioned issues, this application first considers altering the interface morphology between the metal substrate and the adhesive layer to increase the bonding area. By changing the planar contact to a three-dimensional structure, shear stress can be effectively dispersed. Further analysis revealed that a continuous protrusion structure can create a mechanical interlocking effect, but excessive stress concentration must be avoided. Comparing different protrusion shapes, it was found that a stepped arrangement can form multi-level stress transmission paths, while a trapezoidal cross-section can optimize the force flow direction. Ultimately, a radially stepped protrusion structure was chosen, ensuring complete coverage of the adhesive layer while dispersing the load through multi-level support.

[0024] like Figure 1 As shown, this utility model provides a rubber-coated guide wheel structure 1, including a base 11 and a rubber coating layer 12. The base 11 includes a body portion 111 and a connecting portion 112 that are connected to each other. The connecting portion 112 extends circumferentially along the body portion 111. The connecting portion 112 is configured as a boss, and the boss is arranged in a stepped manner along the radial direction of the body portion 111. The rubber coating layer 12 completely covers the boss.

[0025] The core innovation of this application lies in replacing the traditional planar contact interface with a stepped boss structure. By using a trapezoidal cross section and radial stepped arrangement, the contact area between the substrate 11 and the adhesive layer 12 is expanded. At the same time, the shear force is converted into an axial component force to reduce stress concentration. The rigid skeleton formed by the boss provides embedded support for the adhesive layer 12, thereby solving the problems of interface delamination and adhesive layer fatigue deformation.

[0026] The stepped arrangement of the bosses increases the contact area between the substrate 11 and the overlay layer 12, changing the traditional planar contact pattern. This three-dimensional structure can effectively disperse interface stress and reduce stress concentration. The "rigid skeleton" formed by the bosses provides multi-level support for the overlay layer 12, improving the overall strength and stability of the overlay layer 12.

[0027] The design of the overlay layer 12 completely covering the boss ensures a tight bond between the substrate 11 and the overlay layer 12. This structure allows external loads to be transferred more evenly to the substrate 11 through the boss, reducing the shear stress at the interface between the overlay layer 12 and the substrate 11. At the same time, the presence of the boss increases the mechanical interlocking effect, further enhancing the bonding strength between the overlay layer 12 and the substrate 11.

[0028] The stepped arrangement of the bosses also creates multi-level stress transmission paths. When the coating layer 12 is subjected to external loads, the stress can be gradually transmitted to the substrate 11 along different levels of the bosses, avoiding stress concentration at a single interface. This design is particularly beneficial for reducing the fatigue deformation of the coating layer 12 under high-frequency impact conditions.

[0029] This application significantly increases the contact area between the rubber-coated guide wheel substrate 11 and the rubber coating layer 12, improving the interfacial stress distribution. The boss structure provides multi-level support for the rubber coating layer 12, effectively dispersing external loads and reducing fatigue deformation of the rubber coating layer 12. This design greatly improves the bonding strength between the rubber coating layer 12 and the substrate 11, extends the service life of the rubber-coated guide wheel, and reduces maintenance frequency. Under high-frequency impact conditions, this structure can better maintain the stability of the rubber coating layer 12, reducing the risk of peeling and detachment of the rubber coating layer 12. At the same time, due to the presence of the boss structure, the amount of rubber coating material used is reduced, improving economy while ensuring structural reliability.

[0030] Furthermore, the cross-section of the boss along the axial direction of the body portion 111 is trapezoidal.

[0031] Specifically, the hypotenuse of the trapezoidal cross-section forms an inclined contact surface with the rubber coating layer 12. When the guide wheel is subjected to radial load, the shear force on the rubber coating layer 12 is decomposed into an axial component along the hypotenuse. Through geometric optimization, the trapezoidal cross-section structure can improve the interfacial bonding strength and reduce the risk of delamination with the same amount of material.

[0032] The trapezoidal cross-section design increases the contact area between the boss and the rubber coating layer 12, improving the bonding strength between the rubber coating layer 12 and the substrate 11. The trapezoidal cross-section design also disperses stress, reduces stress concentration at the interface, and lowers the risk of the rubber coating layer 12 detaching. Furthermore, the trapezoidal structure provides additional support for the rubber coating layer 12, contributing to improved overall strength and durability of the rubber-coated guide wheel.

[0033] In one alternative embodiment, there are multiple bosses, which are arranged in a stepped manner along the radial direction of the body portion 111.

[0034] Specifically, after multiple bosses are arranged in a radially stepped manner, the contact interface between the rubber coating layer 12 and the substrate 11 is divided into multiple independent regions. The hypotenuse of each boss converts the radial shear force into an axial component force, and the stress is dispersed to different height levels through a stepped distribution. When subjected to load, the local pressure on the contact surface between the rubber coating layer 12 and the bosses is decomposed into multiple contact points, reducing the peak stress at a single point. For example, when the guide wheel is subjected to radial impact force, the outermost boss first converts part of the force into axial compression through its hypotenuse, and the remaining force is transferred to the inner bosses for further decomposition, thus forming a stress dispersion mechanism of gradual energy dissipation. The stepped arrangement of multiple bosses further increases the mechanical interlocking area between the rubber coating layer 12 and the metal substrate 11, forming a multi-point anchoring structure and suppressing the displacement tendency of the rubber coating layer 12 under alternating loads.

[0035] Multiple stepped bosses form a rigid framework, providing multi-level support for the rubber coating layer 12 and effectively dispersing stress. This structural design reduces deformation of the rubber coating layer 12 during use and extends the service life of the rubber-coated guide wheel. Simultaneously, the stepped boss structure reduces manufacturing difficulty and improves production efficiency.

[0036] Furthermore, the height of the multiple bosses decreases in the direction away from the main body 111.

[0037] Specifically, when the overlay layer 12 is subjected to radial loads, the progressively lower bosses decompose the load into axial components. The outer, lower bosses initially share some of the stress, while the inner, higher bosses provide the main support. The outer bosses convert shear force into axial compressive force and transmit it to the substrate 11 through their trapezoidal bevels, while the inner bosses disperse the pressure peaks through their larger cross-sectional area. The progressively lower height avoids stress concentration at a single boss, making the deformation of each area of ​​the overlay layer 12 more uniform and reducing the risk of interfacial delamination.

[0038] The decreasing height arrangement of the bosses increases the contact area between the substrate 11 and the rubber coating layer 12, improving the bonding strength between them. Simultaneously, the decreasing height structure allows the rubber coating layer 12 to distribute stress more evenly under load, reducing stress concentration and extending the service life of the rubber-coated guide wheel. Furthermore, the decreasing height boss structure enhances the support of the rubber coating layer 12, reduces deformation during use, and improves the overall stability and durability of the rubber-coated guide wheel.

[0039] In one alternative embodiment, a heat dissipation groove (not shown) is provided in the area of ​​the body portion 111 near the connecting portion 112.

[0040] The heat dissipation grooves are located in the area adjacent to the main body 111 and the connecting part 112. This area generates heat due to friction or deformation during the operation of the guide wheel. The geometry of the heat dissipation grooves may include rectangular, arc-shaped, or wavy shapes, and their depth and width are adjusted according to the size of the base 11 and the heat dissipation requirements. The heat dissipation grooves are evenly distributed or spaced along the circumference of the main body 111, and there may be one or more grooves. The heat dissipation grooves are located close to the root area of ​​the boss of the connecting part 112 to avoid negatively affecting the structural strength of the boss.

[0041] Specifically, when the guide wheel is in operation, heat is generated at the contact area between the substrate 11 and the adhesive layer 12 due to friction or material deformation. This heat is transferred through the substrate 11 to the area where the heat dissipation grooves are located. The heat dissipation grooves increase the surface area of ​​the substrate 11, accelerating the diffusion of heat to the surrounding environment and reducing the local temperature. The presence of the heat dissipation grooves reduces the retention of heat at the interface between the substrate 11 and the adhesive layer 12, preventing the adhesive layer from softening or delaminating due to increased temperature. At the same time, the location of the heat dissipation grooves avoids the stress concentration area at the root of the boss, ensuring that the overall support strength of the substrate 11 is not weakened.

[0042] The heat dissipation grooves increase the contact area between the main body 111 and the outside environment, promoting rapid heat dissipation. This helps reduce the temperature of the rubber-coated guide wheel during operation, reduces thermal stress, and extends the service life of the rubber coating 12. At the same time, the heat dissipation grooves do not affect the overall structural strength of the rubber-coated guide wheel, ensuring its normal operating performance.

[0043] Specifically, the substrate 11 is made of metal.

[0044] The metal material includes steel or aluminum alloy, which is formed into the body part 111 and the connecting part 112 of the base 11 by casting or machining.

[0045] Specifically, the metal substrate 11 forms a rigid frame through the body portion 111 and the connecting portion 112, with the stepped trapezoidal boss of the connecting portion 112 embedded inside the rubber coating layer 12. The high yield strength of the metal material ensures that the boss maintains structural integrity during the operation of the guide wheel, preventing stress concentration at the interface between the rubber coating layer 12 and the substrate 11 due to plastic deformation. After the elastic material of the metal substrate 11 and the rubber coating layer 12 is combined, the axial component of the boss's inclined surface is transferred to the metal substrate 11, further reducing the risk of rubber layer fatigue. Thus, the metal substrate 11 supports the rubber coating layer 12 while ensuring the structural reliability of the guide wheel under load conditions, extending its service life.

[0046] Specifically, the material of the adhesive layer 12 is an elastic material.

[0047] The elastic material includes polyurethane or rubber. The elastic material is bonded to the matrix 11 through injection molding. During the molding process, the material flows and fills the gaps between the stepped bosses to form an interlocking structure.

[0048] The rubber coating layer 12 is made of an elastic material, which can effectively absorb impact and vibration, reducing wear between the guide wheel and the contact surface. At the same time, the elastic material has good resilience, maintaining the shape and function of the rubber coating layer 12. Furthermore, the elastic material also has a certain degree of anti-slip property, increasing the friction between the guide wheel and the contact surface, and improving the stability and reliability of the guide wheel.

[0049] The above description is merely a preferred embodiment of the present utility model, and the specific embodiments described above are not intended to limit the present utility model. Various modifications and variations can be made within the scope of the technical concept of the present utility model. All refinements, modifications, or equivalent substitutions made by those skilled in the art based on the above description are within the scope of protection of the present utility model.

Claims

1. A rubber-coated guide wheel structure, characterized in that, It includes a substrate and an adhesive layer, wherein the substrate includes a body portion and a connecting portion that are interconnected, and the connecting portion extends circumferentially along the body portion; The connecting portion is configured as a boss, and the boss is arranged in a stepped manner along the radial direction of the body portion, and the adhesive layer completely covers the boss.

2. The rubber-coated guide wheel structure according to claim 1, characterized in that, The cross-section of the boss along the axial direction of the body is trapezoidal.

3. The rubber-coated guide wheel structure according to claim 1, characterized in that, The protrusions are multiple, and the multiple protrusions are arranged in a stepped manner along the radial direction of the body.

4. The rubber-coated guide wheel structure according to claim 3, characterized in that, The height of the plurality of bosses decreases in the direction away from the main body.

5. The rubber-coated guide wheel structure according to any one of claims 1 to 4, characterized in that, The main body has heat dissipation grooves in the area near the connecting part.

6. The rubber-coated guide wheel structure according to any one of claims 1 to 4, characterized in that, The substrate is made of metallic material.

7. The rubber-coated guide wheel structure according to any one of claims 1 to 4, characterized in that, The coating layer is made of an elastic material.

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