A reverse-wrapped dry fabric V-belt

Abstract

This utility model relates to the field of V-belts, specifically to a reverse-wrapped dry fabric V-belt. This utility model discloses a reverse-wrapped dry fabric V-belt, comprising a V-belt body and an outer adhesive-coated dry fabric. The V-belt body includes a top adhesive layer, an aramid cord layer, and a cord-reinforced bottom adhesive layer arranged sequentially. The outer adhesive-coated dry fabric includes a canvas top, which is located above the top adhesive layer or on one side of the V-belt body. When the canvas top is located on one side of the V-belt body, it is situated above the horizontal position of the aramid cord layer. This utility model employs a reverse process, with the canvas top located at the top of the V-belt cross-section, eliminating overlap at the bottom of the cross-section. This reduces stress concentration at the bottom, prevents the fabric from detaching during operation, and improves the belt's service life. Furthermore, the position of the reverse-wrapped canvas top is not limited to the top of the belt; it can extend to an area above the horizontal position of the cords on the working surface of the belt, ensuring that the overlap area bears minimal shear stress.

Description

Technical Field

[0001] This utility model relates to the field of V-belts, specifically to a reverse-wrapped dry V-belt. Background Technology

[0002] V-belts, also known as V-shaped conveyor belts, are a unique type of conveyor belt used for transmitting force and transporting goods. They offer advantages such as easy installation, small footprint, high transmission efficiency, and low noise.

[0003] The existing dry fabric belt wrapping technology uses a forward wrapping process, with the wrapping overlap located at the bottom of the belt cross section. When the belt is working, the bottom is the stress concentration area of ​​the V-belt. In addition, dry fabric V-belts are commonly found in lawnmower wheel systems with multiple reverse back pressure wheels. This overlap seam will form a weak point of stress concentration, which can easily lead to the canvas overlap joint coming apart and failing. Summary of the Invention

[0004] This utility model aims to provide a reverse-wrapped dry fabric V-belt, the specific solution of which is as follows:

[0005] A reverse-wrapped dry fabric V-belt includes a V-belt body and an outer adhesive-coated dry fabric. The V-belt body includes a top adhesive layer, an aramid cord layer, and a cord-reinforced bottom adhesive layer arranged sequentially. The outer adhesive-coated dry fabric includes a canvas top, which is located above the top adhesive layer or on one side of the V-belt body. When the canvas top is located on one side of the V-belt body, it is located in the area above the horizontal position of the aramid cord layer.

[0006] The outer adhesive-coating cloth is woven from transversely non-elastic yarns and longitudinally elastic yarns. The longitudinal elasticity (meaning the belt is elastic in the direction of bending) and the transverse inelasticity ensure the belt's flexibility along its length during operation, reducing heat generation while simultaneously improving lateral support, reducing belt cross-sectional deformation, alleviating strain fatigue damage, and extending service life.

[0007] The top of the top rubber layer has patterned protrusions. This design increases the contact area between the top surface of the belt and the air, improving the belt's heat dissipation effect.

[0008] The compression rubber portion of the reverse-wrapped dry cloth V-belt of this invention is composed of cord-reinforced rubber material (i.e., cord-reinforced base rubber layer). The transverse cords dispersed in the rubber material can provide lateral support for the belt, improve transmission power, and enhance transmission stability.

[0009] This invention employs a reverse process, with the canvas top located at the top of the V-belt cross-section, and no overlap at the bottom of the cross-section. This reduces stress concentration at the bottom, prevents the fabric from detaching during operation, and improves the belt's service life. Furthermore, the position of the reverse-wrapped canvas top is not limited to the top of the belt; it can extend to the area above the horizontal level of the belt's working surface cords, ensuring that the overlap area bears minimal shear stress. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of Example 1;

[0011] Figure 2 This is a schematic diagram of the structure of Example 2;

[0012] Figure 3 A schematic diagram of the weaving process for the outer adhesive-drying cloth;

[0013] The components are labeled as follows: 1. Top adhesive layer; 2. Aramid cord layer; 3. Cord reinforcing bottom adhesive layer; 4. Outer rub-on dry cloth; 5. Canvas top; 6. Transverse non-elastic yarn; 7. Longitudinal elastic yarn. Detailed Implementation Example 1

[0014] The following is combined with Figure 1 and 3 Further explanation:

[0015] A reverse-wrapped dry fabric V-belt includes a V-belt body and an outer adhesive-coated dry fabric 4. The V-belt body includes a top adhesive layer 1, an aramid cord layer 2, and a cord-reinforced bottom adhesive layer 3 arranged sequentially. The outer adhesive-coated dry fabric 4 includes a canvas top 5 (in fact, the canvas top 5 is the extra part after the outer adhesive-coated dry fabric 4 is wrapped around one or more times), and the canvas top 5 is located on the top adhesive layer 1.

[0016] The outer wiping cloth 4 is woven from transverse non-elastic yarn 6 and longitudinal elastic yarn 7. The longitudinal elasticity (i.e., the belt is elastic in the direction of bending) and the transverse non-elasticity ensure the flexibility of the belt in the length direction during operation, reduce belt heat generation, improve transverse support, reduce belt cross-sectional deformation, alleviate strain fatigue damage, and improve service life.

[0017] The top of the top rubber layer 1 has patterned protrusions (not shown in the figure due to inconvenience). This design increases the contact area between the top surface of the belt and the air, improving the belt's heat dissipation effect.

[0018] The compression rubber portion of a reverse-wrapped dry-weave V-belt is composed of cord-reinforced rubber material (i.e., cord-reinforced base layer 3). The transverse cords dispersed in the rubber material provide lateral support for the belt, increasing transmission power and improving transmission stability. This embodiment employs a reverse process, with the canvas top 5 located at the top of the V-belt cross-section, eliminating overlap at the bottom. This reduces stress concentration at the bottom, prevents the fabric from detaching during operation, and extends the belt's service life.

[0019] In this embodiment, from top to bottom, there is a top rubber layer 1, an aramid cord layer 2, and a cord-reinforced bottom rubber layer 3, with an outer layer of rubbed dry cloth 4. During the processing of each component, they are bonded together by the physical adhesion of the rubber sheet, rubber paste, and the compounded rubber on the cloth. Finally, during vulcanization, they are chemically linked by the chemical bonds generated during rubber vulcanization, making them a complete whole.

[0020] When the V-belt prepared in this embodiment is used in a reverse pressure wheel system similar to that of a lawnmower, the dry cloth V-belt can greatly avoid the problem of detachment and failure. Example 2

[0021] Example 2 is otherwise the same as Example 1, except that the canvas tower head 5 is located on one side of the V-belt body, and in the area above the horizontal position of the aramid cord layer 2, such as... Figure 2 As shown. The reverse wrapping extends to the area above the horizontal position of the aramid cord layer 2 on the working surface of the belt, ensuring that the canvas tower head 5 bears minimal shear stress.

[0022] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A reverse wrapped fabric raw fabric V-belt characterized by: It includes a V-belt body and an outer adhesive drying cloth. The V-belt body includes a top adhesive layer, an aramid cord layer and a cord-reinforced bottom adhesive layer arranged in sequence. The outer adhesive drying cloth includes a canvas top. The canvas top is located above the top adhesive layer or on one side of the V-belt body. When the canvas top is located on one side of the V-belt body, it is located in the area above the horizontal position of the aramid cord layer.

2. A reverse wrapped fabric V-belt as claimed in claim 1 wherein: The outer adhesive-coating cloth is woven from transverse non-elastic yarn and longitudinal elastic yarn.

3. A reverse wrapped fabric V-belt as claimed in claim 1 wherein: The top of the top adhesive layer has patterned protrusions.

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