A rubber-coated narrow V-belt with high tensile strength

Abstract

This utility model relates to the field of mechanical transmission technology, and in particular to a high-tensile-strength rubber-coated narrow V-belt, comprising multiple narrow V-belt bodies, each equipped with a tensile-strength-enhancing component. This utility model utilizes ultra-high molecular weight polyethylene fiber bundles as the core tensile-strength component, which significantly improves tensile strength compared to traditional polyester fibers. Combined with a helical winding structure, it effectively disperses stress, avoids localized stress concentration, and improves fatigue resistance by 50%, extending the service life of the rubber-coated narrow V-belt under high-load transmission scenarios. By incorporating the tensile-strength component and pre-treating the fiber surface, a stable chemical bond is formed between the fiber and the rubber matrix. Combined with a low-temperature vulcanization process, the interlayer bonding is further strengthened, improving peel strength and effectively solving the problem of easy interlayer peeling in traditional products, thus ensuring the stability of the overall structure.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and in particular to a rubber-coated narrow V-belt with high tensile strength. Background Technology

[0002] Rubber-coated narrow V-belts are widely used in high-power transmission applications such as industrial machinery and generator sets, and their performance directly affects the stability and lifespan of the equipment.

[0003] Existing banded V-belts primarily use polyester or aramid fibers as the main tensile strength, resulting in limited tensile strength. They are ill-suited for long-term high-load operation and prone to breakage. Furthermore, traditional tensile strength structures often employ parallel arrangements or simple V-shaped connections, leading to uneven stress distribution, poor fatigue resistance, and insufficient adhesion between the fibers and the rubber matrix, resulting in delamination and affecting overall strength, thus failing to meet practical application requirements. Therefore, we provide a high-tensile-strength rubber banded narrow V-belt. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a rubber banded narrow V-belt with high tensile strength. It solves the technical problem that traditional banded V-belts have insufficient tensile strength, making them unable to withstand long-term high-load operation and prone to breakage. Through material and structural innovation, the tensile strength and fatigue resistance of the banded narrow V-belt are improved, extending its service life. It is also suitable for high-power transmission equipment.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a rubber banded narrow V-belt with high tensile strength, comprising multiple narrow V-belt bodies, wherein tensile components that enhance tensile strength are provided on the narrow V-belt bodies.

[0006] The tensile component includes a tensile strength layer disposed at the top of the narrow V-belt body. The tensile strength layer contains, from top to bottom, a top adhesive layer, a tensile layer, a bottom adhesive layer, and a fabric covering layer. The tensile layer contains ultra-high molecular weight polyethylene fiber bundles.

[0007] Preferably, the narrow V-band bodies are connected by a connecting layer, and the connecting layer is a nano-silica modified rubber layer.

[0008] Preferably, the top adhesive layer is made of EPDM rubber, and the ultra-high molecular weight polyethylene fiber bundles are uniformly distributed within the tensile layer.

[0009] Preferably, the ultra-high molecular weight polyethylene fiber bundle has a helical structure and its surface is coated with a rubber latex layer.

[0010] Preferably, the ultra-high molecular weight polyethylene fiber bundle has an elastic modulus of 100-300 GPa, a tensile strength ≥3500 MPa, and a single filament fineness of 1.0-2.2 denier.

[0011] Preferably, the base adhesive layer is made of polyurethane material, and the covering layer is a polyester-cotton fabric layer.

[0012] By employing the above technical solution, this utility model provides a rubber-coated narrow V-belt with high tensile strength, which has at least the following beneficial effects:

[0013] 1. This utility model uses ultra-high molecular weight polyethylene fiber bundles as the core tensile body by setting up tensile components. Compared with traditional polyester fibers, its tensile strength is improved. Combined with the spiral winding structure, it can effectively disperse stress, avoid local stress concentration, improve fatigue resistance by 50%, and extend the service life of rubber banded narrow V belts in high-load transmission scenarios.

[0014] 2. By setting up tensile components and pre-treating the fiber surface, this utility model can form a stable chemical bond between the fiber and the rubber matrix. Combined with a low-temperature vulcanization process, the interlayer connection is further strengthened, the peel strength is improved, and the problem of easy peeling between layers in traditional products is effectively solved, ensuring the stability of the overall structure. Attached Figure Description

[0015] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Narrow V-belt body;

[0022] 2. Tensile component; 21. Tensile strength layer; 22. Top adhesive layer; 23. Tensile layer; 24. Ultra-high molecular weight polyethylene fiber bundle; 25. Bottom adhesive layer; 26. Fabric covering layer. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Traditional banded V-belts suffer from insufficient tensile strength, making them unable to withstand long-term high-load operation and prone to breakage. This embodiment provides a high-tensile-strength rubber banded narrow V-belt. Through material and structural innovations, the tensile strength and fatigue resistance of the banded narrow V-belt are improved, extending its service life. It is also suitable for high-power transmission equipment. Please refer to... Figure 1 - Figure 4 This high-tensile-strength rubber-modified narrow V-belt comprises multiple narrow V-belt bodies 1, connected by a binding layer. This binding layer is a nano-silica-modified rubber layer that integrates the multiple narrow V-belt bodies 1 into a single unit. The addition of nano-silica enhances the strength and wear resistance of the rubber layer, improves the stability and reliability of the binding structure, and ensures that each narrow V-belt body 1 is subjected to synchronous force and works collaboratively during transmission, preventing premature damage due to uneven force on individual V-belts. It is suitable for high-load transmission scenarios. The narrow V-belt body 1 is equipped with a tensile-strength-enhancing component 2. The tensile-strength-enhancing component 2 strengthens the tensile strength of the narrow V-belt body 1, improves fatigue resistance, and thus extends its service life.

[0025] Existing banded V-belts mostly use polyester or aramid fibers as tensile strength, which has limited strength, making them difficult to withstand long-term high loads and prone to breakage. Furthermore, the existing tensile structure design leads to uneven stress, poor fatigue resistance, and insufficient adhesion between fibers and rubber, which easily leads to peeling and affects their strength, making it difficult to meet actual needs. In order to solve the above problems... The tensile component 2 includes a tensile strength layer 21 disposed at the top of the narrow V-belt body 1. Inside the tensile strength layer 21, from top to bottom, are sequentially installed a top rubber layer 22, a tensile layer 23, a bottom rubber layer 25, and a fabric covering layer 26. The top rubber layer 22 is made of EPDM rubber, utilizing its aging resistance and weather resistance to provide protection for the top of the narrow V-belt body 1. The bottom rubber layer 25 is made of polyurethane, utilizing its wear resistance, oil resistance, and high strength to enhance the durability of the contact area between the narrow V-belt body 1 and the drive wheel. The fabric covering layer 26 is a polyester-cotton fabric layer, improving the overall structure's flexibility and tear resistance while protecting the internal layers, collaboratively ensuring the stable transmission performance of the narrow V-belt body 1. The tensile layer 23 contains ultra-high molecular weight polyethylene fiber bundles 24, which are evenly distributed within the tensile layer 23, ensuring... To ensure uniform stress distribution and fully utilize its high tensile strength, the ultra-high molecular weight polyethylene (UHMWPE) fiber bundle 24 features a helical structure that effectively disperses stress, avoids localized stress concentration, and improves fatigue resistance. Furthermore, its surface is coated with a rubber latex layer, forming a stable chemical bond between the fiber and the rubber matrix. Combined with a low-temperature vulcanization process, this strengthens interlayer connections, improves peel strength, and ensures overall structural stability. The UHMWPE fiber bundle 24 has an elastic modulus of 100-300 GPa, a tensile strength ≥3500 MPa, and a single filament fineness of 1.0-2.2 denier, thus fully utilizing its high tensile properties to ensure sufficient tensile strength under high-load transmission. Simultaneously, it adapts to the overall structural design, working synergistically with other layers to enhance the load-bearing capacity and durability of the narrow V-belt body 1.

[0026] By setting a spiral structure of ultra-high molecular weight polyethylene fiber bundles 24 in the tensile layer 23, the overall tensile strength is improved by utilizing its high tensile strength characteristics. The spiral structure disperses stress to enhance fatigue resistance. Through pretreatment combined with low-temperature vulcanization process, the fibers and rubber matrix form a stable chemical bond, which strengthens the interlayer connection and improves the peel strength. At the same time, the top rubber layer 22, the bottom rubber layer 25 and the covering layer 26 work together to ensure the structural stability and service life of the rubber banded narrow V belt.

[0027] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rubber-coated narrow V-belt with high tensile strength, comprising multiple narrow V-belt bodies (1), characterized in that: The narrow V-belt body (1) is provided with a tensile component (2) to enhance tensile strength. The tensile component (2) includes a tensile strength layer (21) disposed at the top of the narrow V-belt body (1). The tensile strength layer (21) is provided with a top adhesive layer (22), a tensile layer (23), a bottom adhesive layer (25) and a fabric layer (26) installed from top to bottom. The tensile layer (23) is provided with ultra-high molecular weight polyethylene fiber bundles (24).

2. The high tensile strength rubber-coated narrow V-belt according to claim 1, characterized in that: The narrow V-band bodies (1) are connected by a connecting layer, which is a nano-silica modified rubber layer.

3. The high tensile strength rubber-coated narrow V-belt according to claim 1, characterized in that: The top adhesive layer (22) is made of EPDM rubber, and the ultra-high molecular weight polyethylene fiber bundles (24) are uniformly distributed in the tensile layer (23).

4. The high tensile strength rubber-coated narrow V-belt according to claim 1, characterized in that: The ultra-high molecular weight polyethylene fiber bundle (24) has a helical structure and its surface is coated with a rubber latex layer.

5. The high tensile strength rubber-coated narrow V-belt according to claim 1, characterized in that: The ultra-high molecular weight polyethylene fiber bundle (24) has an elastic modulus of 100-300 GPa, a tensile strength of ≥3500 MPa, and a single filament fineness of 1.0-2.2 denier.

6. The high tensile strength rubber-coated narrow V-belt according to claim 1, characterized in that: The base layer (25) is made of polyurethane material, and the covering layer (26) is a polyester-cotton fabric layer.

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