Heat-resistant polyurethane synchronous belt

Abstract

The utility model discloses a heat-resistant polyurethane synchronous belt, relates to the field of synchronous belts, and aims to solve the problems that in the prior art, a polyurethane synchronous belt can generate higher temperature after being used for a long time, and the existing polyurethane synchronous belt is not provided with a heat dissipation structure, so that the heat dissipation effect is poor when the polyurethane synchronous belt is used at the higher temperature for a long time. And the service life of the polyurethane synchronous belt can be influenced. A first tensile reinforcing layer is fixedly arranged in the inner tensile layer, an outer heat dissipation layer is connected to the end face of the outer side of the inner tensile layer, a second tensile reinforcing layer is fixedly arranged in the outer heat dissipation layer, and a plurality of strip-shaped heat dissipation cavities are formed in the outer heat dissipation layer at equal intervals in an array mode. Three air guide holes are connected to the upper end of each strip-shaped heat dissipation cavity at equal intervals, an outer heat dissipation face is arranged on the end face of the outer side of the outer heat dissipation layer, and a plurality of air disturbing strips are arranged on the outer heat dissipation face at equal intervals in an array mode.

Description

Technical Field

[0001] The utility model relates to the field of synchronous belts, in particular to a heat-resistant polyurethane synchronous belt. Background Art

[0002] The synchronous belt is an advanced transmission device characterized by high efficiency, precision, and stability. It primarily consists of a tension layer and a cover layer. The tension layer is typically made of steel wire rope or fiberglass, ensuring the belt's load-bearing capacity and service life. The cover layer is typically constructed of materials such as polyurethane or neoprene, providing the belt with excellent wear resistance, aging resistance, and corrosion resistance. The unique tooth design of the synchronous belt enables zero-slip transmission between the pulleys, ensuring accurate and stable transmission. Furthermore, synchronous belts offer advantages such as low noise and easy maintenance, making them widely used in various mechanical transmission systems, such as textile machinery, automotive manufacturing, and food processing. In short, synchronous belts are an indispensable component in modern mechanical transmission systems.

[0003] For example, the authorization announcement number, CN217081263U, discloses a wear-resistant polyurethane synchronous belt, including a belt body and meshing teeth arranged on the inner side of the belt body, the belt body is detachably connected to a wear-resistant assembly, the wear-resistant assembly includes a number of wear-resistant covers that are buckled on the meshing teeth and a number of anti-slip strips located on the outer side of the belt body, the longitudinal sections of the inner cavity and outer wall of the wear-resistant cover are consistent with the longitudinal section shape of the meshing teeth, the wear-resistant cover and the anti-slip strip correspond one to one, and both ends of the wear-resistant cover and the anti-slip strip are fixed with connecting blocks, which extend from both sides of the belt body respectively, and the connecting blocks on the anti-slip strip and the wear-resistant cover are detachably connected. The solution of the utility model can solve the problem of unstable transmission caused by wear of the meshing teeth.

[0004] Since polyurethane synchronous belts will generate high temperatures when used for a long time, existing polyurethane synchronous belts are not equipped with heat dissipation structures. Using polyurethane synchronous belts at high temperatures for a long time will affect the service life of the polyurethane synchronous belts. Therefore, the market urgently needs to develop a heat-resistant polyurethane synchronous belt to help people solve the existing problem. Utility Model Content

[0005] The purpose of the present utility model is to provide a heat-resistant polyurethane synchronous belt to solve the problem raised in the above background technology that the polyurethane synchronous belt will generate a high temperature when used for a long time, and the existing polyurethane synchronous belts are not provided with a heat dissipation structure. When the polyurethane synchronous belt is used at a high temperature for a long time, the service life of the polyurethane synchronous belt will be affected.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a heat-resistant polyurethane synchronous belt, comprising an inner tensile layer and an outer heat dissipation layer, a first tensile reinforcement layer fixedly arranged inside the inner tensile layer, an outer end face of the inner tensile layer connected to the outer heat dissipation layer, a second tensile reinforcement layer fixedly arranged inside the outer heat dissipation layer, a plurality of strip-shaped heat dissipation cavities arranged in an array at equal intervals inside the outer heat dissipation layer, three air guide holes evenly spaced connected to the upper end of each strip-shaped heat dissipation cavity, an outer end face of the outer heat dissipation layer provided with an outer heat dissipation surface, and a plurality of wind-disturbing strips arranged in an array at equal intervals on the outer heat dissipation surface.

[0007] Preferably, the lower end of each of the air guide holes is communicated with the interior of the strip-shaped heat dissipation cavity, and the upper end of each of the air guide holes is communicated with the external air through the outer heat dissipation layer.

[0008] Preferably, an inner tooth surface is provided on the inner end surface of the inner tensile layer, the inner tensile layer and the outer heat dissipation layer are both made of polyurethane material, and the outer end surface of the inner tensile layer is fixedly connected to the inner end surface of the outer heat dissipation layer.

[0009] Preferably, the first tensile reinforcement layer is made of tensile steel wire.

[0010] Preferably, the second tensile reinforcement layer is made of glass fiber.

[0011] Preferably, the wind-disturbing strips and the outer heat dissipation layer are integrally formed.

[0012] Preferably, both sides of the inner tensile layer and the outer heat dissipation layer are provided with a turning portion.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In the utility model, through the arrangement of the strip heat dissipation cavity, when the entire polyurethane synchronous belt rotates, it will drive the multiple strip heat dissipation cavities inside each outer heat dissipation layer to pass through the rotating part one by one. When the outer heat dissipation layer passes the rotating part, it will deform and bend. When the outer heat dissipation layer is deformed and bent, the strip heat dissipation cavity will be compressed, so that when the strip heat dissipation cavity contracts, the internal air will be discharged outward through the three air guide holes. The air discharge takes away part of the heat inside the outer heat dissipation layer. At the same time, the deformed strip heat dissipation cavity is restored after rotating out of the rotating part, so that the strip heat dissipation cavity absorbs the colder air from the outside through the air guide holes to achieve heat dissipation. Although the heat discharged by each strip heat dissipation cavity after passing through the rotating part is limited, the entire polyurethane synchronous belt rotates at a faster speed when working, so that the frequency of each strip heat dissipation cavity discharging heat outward through the air guide holes is faster, so that the entire polyurethane synchronous belt can achieve passive heat dissipation during work. At the same time, the heat dissipation efficiency of the entire polyurethane synchronous belt will gradually increase with the increase of the rotation speed of the polyurethane synchronous belt.

[0015] 2. In the utility model, an outer end face of the outer heat dissipation layer is provided with an outer heat dissipation surface through the arrangement of wind disturbance strips, and a plurality of wind disturbance strips are arranged in an array at equal intervals on the outer heat dissipation surface. The wind disturbance strips and the outer heat dissipation layer are integrally formed. When the wind disturbance strips rotate with the outer heat dissipation layer, the air outside the outer heat dissipation surface is driven to flow, thereby preventing the hot air discharged through the air guide holes from staying on the outer heat dissipation surface, and transporting the hot air to the outside through the air flow, thereby allowing the colder air outside to flow to the outer heat dissipation surface for heat dissipation. At the same time, the air guide holes can absorb colder air when inhaling, thereby improving the heat dissipation efficiency of the entire polyurethane synchronous belt.

[0016] 3. In this utility model, through the arrangement of the first tensile reinforcement layer and the second tensile reinforcement layer, the first tensile reinforcement layer is made of tensile steel wire, and the tensile strength of the inner tensile layer is enhanced by the first tensile reinforcement layer; the second tensile reinforcement layer is made of glass fiber, and the structural strength and heat resistance of the outer heat dissipation layer are enhanced by the second tensile reinforcement layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of a heat-resistant polyurethane synchronous belt of the utility model;

[0018] Figure 2 This is the main sectional view of the utility model;

[0019] Figure 3 It is a side sectional view of the utility model;

[0020] Figure 4 It is an enlarged view of the detail A of the present utility model.

[0021] In the figure: 1. Inner tensile layer; 101. Inner tooth surface; 102. First tensile reinforcement layer; 2. Outer heat dissipation layer; 201. Outer heat dissipation surface; 202. Second tensile reinforcement layer; 3. Strip heat dissipation cavity; 301. Air guide hole; 302. Wind disturbance strip; 4. Rotating part. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figure 1-4, an embodiment of the present invention is: a heat-resistant polyurethane synchronous belt, comprising an inner tensile layer 1 and an outer heat dissipation layer 2, a first tensile reinforcement layer 102 is fixedly provided inside the inner tensile layer 1, the outer end surface of the inner tensile layer 1 is connected to the outer heat dissipation layer 2, a second tensile reinforcement layer 202 is fixedly provided inside the outer heat dissipation layer 2, a plurality of strip-shaped heat dissipation cavities 3 are arranged in an evenly spaced array inside the outer heat dissipation layer 2, the upper end of each strip-shaped heat dissipation cavity 3 is evenly spaced and connected with three air guide holes 301, the lower end of each air guide hole 301 is connected with the interior of the strip-shaped heat dissipation cavity 3, the upper end of each air guide hole 301 is connected with the outside air through the outer heat dissipation layer 2, and the upper end of each air guide hole 301 is connected with the outside air. A rotating part 4 is provided on both sides of the inner tensile layer 1 and the outer heat dissipation layer 2. When the entire polyurethane synchronous belt rotates, it will drive the multiple strip-shaped heat dissipation cavities 3 inside each outer heat dissipation layer 2 to pass through the rotating part 4 one by one. When the outer heat dissipation layer 2 passes When the rotating part 4 is rotated, the deformation and bending will occur. When the outer heat dissipation layer is deformed and bent, the strip heat dissipation cavity 3 will be compressed, so that when the strip heat dissipation cavity 3 contracts, the internal air will be discharged outward through the three air guide holes 301, and the air discharge will take away part of the heat inside the outer heat dissipation layer 2. At the same time, the deformed strip heat dissipation cavity 3 will be restored after rotating out of the rotating part 4, so that the strip heat dissipation cavity 3 will absorb the colder air from the outside through the air guide holes 301 to achieve heat dissipation. Although the heat discharged from each strip heat dissipation cavity 3 after the deformation of the rotating part 4 is limited, the entire polyurethane synchronous belt rotates at a faster speed when working, so that the frequency of each strip heat dissipation cavity 3 discharging hot air outward through the air guide holes 301 is faster, so that the entire polyurethane synchronous belt can achieve passive heat dissipation during operation. At the same time, the heat dissipation efficiency of the entire polyurethane synchronous belt will gradually increase with the increase of the rotation speed of the polyurethane synchronous belt.

[0024] See also Figure 1-3 The outer end surface of the outer heat dissipation layer 2 is provided with an outer heat dissipation surface 201, and a plurality of wind-disturbing strips 302 are arranged in an array at equal intervals on the outer heat dissipation surface 201. The wind-disturbing strips 302 are integrally formed with the outer heat dissipation layer 2. When the wind-disturbing strips 302 rotate with the outer heat dissipation layer 2, the air outside the outer heat dissipation surface 201 is driven to flow, thereby preventing the hot air discharged through the air guide holes 301 from staying on the outer heat dissipation surface 201, and transporting the hot air to the outside through the air flow, thereby allowing the colder air outside to flow to the outer heat dissipation surface 201 for heat dissipation. At the same time, the air guide holes 301 can absorb colder air when inhaling, thereby improving the heat dissipation efficiency of the entire polyurethane synchronous belt.

[0025] See also Figure 2-4An inner tooth surface 101 is provided on the inner end face of the inner tensile layer 1. The inner tensile layer 1 and the outer heat dissipation layer 2 are both made of polyurethane material. The outer end face of the inner tensile layer 1 and the inner end face of the outer heat dissipation layer 2 are fixedly connected. The first tensile reinforcement layer 102 is made of tensile steel wire. The tensile strength of the inner tensile layer 1 is enhanced by the first tensile reinforcement layer 102. The second tensile reinforcement layer 202 is made of glass fiber. The structural strength and heat resistance of the outer heat dissipation layer 2 are enhanced by the second tensile reinforcement layer 202.

[0026] Working principle: During use, the inner tensile layer 1 realizes non-slip transmission with the pulley through the inner tooth surface 101. At the same time, as the synchronous belt rotates, the outer heat dissipation layer 2 and the strip heat dissipation cavity 3 inside it pass through the rotating part 4 one by one. At the rotating part 4, the outer heat dissipation layer 2 is deformed due to being squeezed, thereby compressing the strip heat dissipation cavity 3. During this process, the air in the strip heat dissipation cavity 3 is compressed and discharged to the outside through the air guide hole 301, effectively taking away the heat inside the outer heat dissipation layer 2. After the strip heat dissipation cavity 3 rotates out of the rotating part 4, it gradually returns to its original state and draws in cooler air from the outside through the air guide hole 301, realizing a continuous heat dissipation cycle. In addition, the wind disturbance strip 302 on the outside of the outer heat dissipation layer 2 drives the air flow as the synchronous belt rotates, which not only accelerates the discharge of hot air, but also promotes the intake of external cold air, further improving the heat dissipation efficiency. In this way, the heat-resistant polyurethane synchronous belt can maintain a low operating temperature under long-term high-load operation, thereby extending its service life.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A heat-resistant polyurethane synchronous belt, comprising an inner tensile layer (1) and an outer heat dissipation layer (2), characterized in that: A first tensile reinforcement layer (102) is fixedly provided inside the inner tensile layer (1), an outer end face of the inner tensile layer (1) is connected to an outer heat dissipation layer (2), a second tensile reinforcement layer (202) is fixedly provided inside the outer heat dissipation layer (2), a plurality of strip-shaped heat dissipation cavities (3) are arranged in an array at equal intervals inside the outer heat dissipation layer (2), three air guide holes (301) are connected to the upper end of each strip-shaped heat dissipation cavity (3) at equal intervals, an outer end face of the outer heat dissipation layer (2) is provided with an outer heat dissipation surface (201), and a plurality of wind-disturbing strips (302) are arranged in an array at equal intervals on the outer heat dissipation surface (201).

2. The heat-resistant polyurethane synchronous belt according to claim 1, characterized in that: The lower end of each air guide hole (301) is communicated with the interior of the strip-shaped heat dissipation cavity (3), and the upper end of each air guide hole (301) passes through the outer heat dissipation layer (2) and is communicated with the external air.

3. The heat-resistant polyurethane synchronous belt according to claim 1, characterized in that: An inner tooth surface (101) is provided on the inner end surface of the inner tensile layer (1); the inner tensile layer (1) and the outer heat dissipation layer (2) are both made of polyurethane material; the outer end surface of the inner tensile layer (1) and the inner end surface of the outer heat dissipation layer (2) are fixedly connected.

4. The heat-resistant polyurethane synchronous belt according to claim 1, characterized in that: The first tensile reinforcement layer (102) is made of tensile steel wire.

5. The heat-resistant polyurethane synchronous belt according to claim 1, characterized in that: The second tensile reinforcement layer (202) is made of glass fiber.

6. The heat-resistant polyurethane synchronous belt according to claim 1, characterized in that: The wind-disturbing strip (302) and the outer heat dissipation layer (2) are integrally formed.

7. The heat-resistant polyurethane synchronous belt according to claim 1, characterized in that: A turning portion (4) is commonly provided on both sides of the inner tensile layer (1) and the outer heat dissipation layer (2).

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