Stretch-proof double-tooth V-shaped belt

Abstract

The utility model relates to the technical field of double-tooth V-shaped belts, and provides a stretch-proof double-tooth V-shaped belt which comprises two abrasion-resistant layers and a supporting layer, the supporting layer is located between the two abrasion-resistant layers, the sections of the two abrasion-resistant layers are of a tooth-shaped structure, the supporting layer comprises a stretch-proof layer and a plurality of stretch-proof cores, the stretch-proof layer is located in the middle of the supporting layer, and the stretch-proof cores are located in the middle of the supporting layer. The cross section of each tensile core is of a wavy structure, the multiple tensile cores are linearly arranged along the supporting layer to form two tensile core sets, and the two tensile core sets are located on the two sides of the tensile layer respectively. By means of the technical scheme, the problems that in the prior art, due to the long-term twisting and stretching effect, the V-shaped belt is stretched and lengthened, the V-shaped belt is loosened, and the power transmission effect of the V-shaped belt is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of double-tooth V-belts, and specifically, to a stretch-resistant double-tooth V-belt. Background Art

[0002] The drive belt is a crucial component in the mechanical drive system, used to transfer power from one shaft to another. Among them, the V-belt, as a common type of drive belt, is widely used in various mechanical equipment and drive systems due to its V-shaped groove design that can provide good gripping performance.

[0003] The double-tooth V-belt is a drive belt with a special design. Its V-shaped groove presents a double-tooth structure in the cross-section. Compared with the traditional single-tooth V-belt, the double-tooth V-belt has a larger contact area and better gripping performance, can withstand greater torque and load, and at the same time improves the transmission efficiency and stability.

[0004] However, during the use of the current V-belts on the market, due to the long-term action of twisting and stretching, the V-belts often stretch and become longer, resulting in the relaxation of the V-belts, and thus reducing their power transmission effect. Summary of the Utility Model

[0005] The utility model provides a stretch-resistant double-tooth V-belt, which solves the problem in the related technology that due to the long-term action of twisting and stretching, the V-belt is stretched and becomes longer, resulting in the relaxation of the V-belt and reducing its power transmission effect.

[0006] The technical solution of the utility model is as follows:

[0007] A stretch-resistant double-tooth V-belt includes two wear-resistant layers and one support layer. The support layer is located between the two wear-resistant layers. The cross-sections of the two wear-resistant layers are in a tooth-shaped structure. The support layer includes an anti-stretching layer and a number of anti-stretching cores. The anti-stretching layer is located in the middle of the support layer. The cross-section of the anti-stretching core is in a wavy structure. A number of the anti-stretching cores are linearly arranged along the support layer into two anti-stretching core groups, and the two anti-stretching core groups are respectively located on both sides of the anti-stretching layer.

[0008] Further, three U-shaped grooves are provided at the recesses of the wear-resistant layer. The U-shaped grooves extend from the wear-resistant layer to the support layer, and the three U-shaped grooves are arranged in an arc along the recesses of the wear-resistant layer.

[0009] Further, a strengthening layer is provided between the wear-resistant layer and its adjacent anti-stretching core. The cross-section of the strengthening layer is the same as the cross-section shape of the wear-resistant layer, and the U-shaped grooves are located between the wear-resistant layer and the strengthening layer.

[0010] Further, both the wear-resistant layer and the support layer are made of neoprene, the anti-tensile layer is made of nitrile rubber, the tensile strength of the anti-tensile layer is greater than that of the wear-resistant layer and the support layer, and the anti-tensile core is woven from polyester fiber strands.

[0011] Further, the reinforcing layer is made of polyurethane, and the tensile strength of the reinforcing layer is greater than that of the wear-resistant layer.

[0012] The working principle and beneficial effects of the present utility model are as follows:

[0013] The present utility model increases the overall anti-tensile ability of the V-belt through the anti-tensile layer and the anti-tensile core, and uses an anti-tensile core with a wavy cross-sectional structure to ensure that the V-belt has a certain ductility, making it easier to be sleeved on the equipment. After the V-belt is stretched, the anti-tensile core will be straightened, thereby exerting its anti-tensile ability to provide additional support for the V-belt and prevent the V-belt from being pulled apart; the present utility model further forms a tensile core group by combining multiple anti-tensile cores to improve the overall anti-tensile ability. When the V-belt is stretched, each anti-tensile core will share part of the tensile force, thereby reducing the load on a single anti-tensile core, and thus increasing the overall anti-tensile ability of the V-belt. Moreover, the tensile core group composed of multiple anti-tensile cores can provide more stable support when the V-belt receives tensile forces in different directions, helping to reduce the deformation and damage that occur during the stretching process of the V-belt, and improving the durability and stability of the V-belt; the present utility model solves the problem in the related art that due to long-term twisting and stretching, the V-belt is stretched and elongated, resulting in the V-belt becoming loose and reducing its power transmission effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic cross-sectional structural diagram of the present utility model;

[0017] Figure 3 is Figure 2 a cross-sectional view taken along line A-A of

[0018] Figure 4 is Figure 3 an enlarged view of part A of

[0019] In the figure: 1, wear-resistant layer; 2, support layer; 3, anti-tensile layer; 4, anti-tensile core; 5, reinforcing layer; 6, U-shaped groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0021] As Figures 1 to 4 shown, this embodiment proposes a stretch-resistant double-tooth V-belt, which includes two wear-resistant layers 1 and one support layer 2. The support layer 2 is located between the two wear-resistant layers 1. The cross-sections of the two wear-resistant layers 1 are in a tooth-shaped structure. The support layer 2 includes a tensile-resistant layer 3 and a number of tensile-resistant cores 4. The tensile-resistant layer 3 is located in the middle of the support layer 2. The cross-section of the tensile-resistant core 4 is in a wavy structure. A number of tensile-resistant cores 4 are linearly arranged along the support layer 2 into two tensile-core groups, and the two tensile-core groups are respectively located on both sides of the tensile-resistant layer 3. The wear-resistant layer 1 is used to protect the V-belt from damage caused by the external environment and friction. The support layer 2 is used to enhance the structural stability and strength of the V-belt. The tensile-resistant layer 3 is used to increase the stretch-resistant performance of the V-belt. The tensile-resistant core 4 is used to provide extra stretch-resistant ability after the V-belt is stretched. Especially when the cross-section of the tensile-resistant core 4 is stretched from a wavy structure to a linear structure, that is, the tensile-resistant core 4 is straightened, the stretch-resistant ability of the straightened tensile-resistant core 4 will increase. Using a tensile-resistant core 4 with a cross-section in a wavy structure can ensure that the V-belt has a certain ductility and can also provide stretch-resistant ability after the V-belt is stretched. The ductility of the V-belt can make it easier to be sleeved on the corresponding equipment during installation. Combining multiple tensile-resistant cores 4 into a tensile-core group can effectively improve the overall stretch-resistant ability. When the V-belt is stretched, each tensile-resistant core 4 will share part of the tensile force, thereby reducing the load on a single tensile-resistant core 4 and increasing the overall stretch-resistant ability of the V-belt; the tensile-core group composed of multiple tensile-resistant cores 4 can provide more stable support when the V-belt receives tensile forces in different directions, helping to reduce the deformation and damage that occur during the stretching process of the V-belt, and improving the durability and stability of the V-belt; the tensile-core group composed of multiple tensile-resistant cores 4 can provide greater elasticity and adaptability. When the V-belt is stretched, multiple tensile-resistant cores 4 can better adapt to different degrees of tensile force changes, thereby reducing the deformation of the V-belt and maintaining its stability; it can improve the safety of the V-belt. Even if a certain tensile-resistant core 4 fails or is damaged, other tensile-resistant cores 4 can still continue to provide support, thereby reducing the accidental breakage or damage of the V-belt caused by a single-point failure. Setting two tensile-core groups and respectively arranging them on both sides of the tensile-resistant layer 3 helps to evenly distribute the tensile force, increases the overall stretch-resistant ability of the V-belt, reduces the tensile force received by a single tensile-core group, and extends the service life of the tensile-core group.

[0022] In this embodiment, three U-shaped grooves 6 are provided at the recess of the wear-resistant layer 1. The U-shaped grooves 6 extend from the wear-resistant layer 1 to the support layer 2, and the three U-shaped grooves 6 are arranged in an arc along the recess of the wear-resistant layer 1. The U-shaped grooves 6 are used to make the V-belt more flexible and easier to bend when bending, which helps the V-belt to better cooperate with the gear, can reduce the energy loss and wear caused by bending, and thus improve the transmission efficiency; the U-shaped grooves 6 can reduce the stress concentration at the bending part of the V-belt. By introducing the U-shaped grooves 6 inside the groove, the belt can be made more flexible when bending, reducing the degree of stress concentration, thereby reducing the local strength of the belt under force and reducing the risk of fracture. By making the V-belt easier to bend, the U-shaped grooves 6 can make the V-belt better fit the contour of the gear, ensuring that the transmission effect is more stable and reliable.

[0023] In this embodiment, a reinforcing layer 5 is provided between the wear-resistant layer 1 and its adjacent tensile-resistant core 4. The cross-section of the reinforcing layer 5 is the same as the cross-sectional shape of the wear-resistant layer 1, and the U-shaped groove 6 is located between the wear-resistant layer 1 and the reinforcing layer 5. The reinforcing layer 5 can enhance the structural stability and strength of the V-belt at the tooth-shaped recess, preventing tearing and rupture caused by bending. In this case, while the U-shaped grooves 6 make the V-belt easier to bend, the reinforcing layer 5 can also provide additional support for the U-shaped grooves 6, preventing the U-shaped grooves 6 from being torn and ruptured due to excessive bending.

[0024] In this embodiment, both the wear-resistant layer 1 and the support layer 2 are made of neoprene, the tensile-resistant layer 3 is made of nitrile rubber, the tensile strength of the tensile-resistant layer 3 is greater than that of the wear-resistant layer 1 and the support layer 2, and the tensile-resistant core 4 is made of polyester fiber strands. As the material of the wear-resistant layer 1, neoprene has excellent wear resistance and weather resistance, and can effectively protect the surface of the V-belt from friction and damage from the external environment. Similarly, as the material of the support layer 2, neoprene can provide structural stability and support for the entire belt, enhancing its durability and strength. As the material of the tensile-resistant layer 3, nitrile rubber has a high tensile strength and tensile resistance. It is located in the middle of the support layer 2 and is mainly used to increase the tensile resistance of the V-belt, preventing the belt from breaking or being damaged due to stretching during transmission. Using nitrile rubber with a tensile strength greater than that of neoprene can achieve the effect of providing extra tensile resistance. As the material of the tensile-resistant core 4, the polyester fiber strands have a high tensile strength and flexibility. Its wavy structure can provide additional support and stability, helping to prevent the V-belt from being torn and ruptured when bending.

[0025] In this embodiment, the reinforcing layer 5 is made of polyurethane, and the tensile strength of the reinforcing layer 5 is greater than that of the wear-resistant layer 1. Polyurethane, as the material of the reinforcing layer 5, has high tensile strength and wear resistance. Polyurethane, as the material of the reinforcing layer 5, has high tensile strength and wear resistance. It can effectively provide support for the U-shaped groove 6 and prevent tearing or cracking at the U-shaped groove 6. Moreover, the tensile strength of polyurethane generally ranges between 20 MPa and 60 MPa, while the tensile strength of neoprene is usually between 10 MPa and 20 MPa. Polyurethane can effectively achieve the functions required by the reinforcing layer 5 and achieve the expected effect.

[0026] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stretch-resistant double-tooth V-belt, comprising two wear-resistant layers (1) and one support layer (2), wherein the support layer (2) is located between the two wear-resistant layers (1), and the cross-sections of the two wear-resistant layers (1) are in a tooth-shaped structure, characterized in that, The support layer (2) includes a tensile resistance layer (3) and a plurality of tensile resistance cores (4). The tensile resistance layer (3) is located in the middle of the support layer (2). The cross-section of the tensile resistance core (4) is in a wavy structure. A plurality of the tensile resistance cores (4) are linearly arranged along the support layer (2) into two tensile core groups, and the two tensile core groups are respectively located on both sides of the tensile resistance layer (3).

2. The stretch-resistant double-tooth V-belt according to claim 1, wherein, There are three U-shaped grooves (6) provided at the recess of the wear-resistant layer (1). The U-shaped grooves (6) extend from the wear-resistant layer (1) towards the support layer (2). The three U-shaped grooves (6) are arranged in an arc along the recess of the wear-resistant layer (1).

3. The stretch-resistant double-tooth V-belt according to claim 2, characterized in that, There is a reinforcing layer (5) provided between the wear-resistant layer (1) and its adjacent tensile resistance core (4). The cross-section of the reinforcing layer (5) is the same as the cross-sectional shape of the wear-resistant layer (1). The U-shaped groove (6) is located between the wear-resistant layer (1) and the reinforcing layer (5).

4. A stretch-resistant double-tooth V-belt according to claim 1, wherein, Both the wear-resistant layer (1) and the support layer (2) are made of chloroprene rubber. The tensile resistance layer (3) is made of nitrile rubber. The tensile strength of the tensile resistance layer (3) is greater than the tensile strengths of the wear-resistant layer (1) and the support layer (2). The tensile resistance core (4) is woven from polyester fiber strands.

5. A stretch-resistant double-tooth V-belt according to claim 3, characterized in that, The reinforcing layer (5) is made of polyurethane. The tensile strength of the reinforcing layer (5) is greater than the tensile strength of the wear-resistant layer (1).

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