Synchronous belt with herringbone teeth

Abstract

The utility model relates to the technical field of synchronous belts, in particular to a synchronous belt with herringbone teeth, which comprises an annular belt body, a plurality of belt teeth are uniformly arranged on the annular belt body, first air exhaust grooves are arranged on two sides of the belt teeth, and a second air exhaust groove is arranged between two first air exhaust grooves. Noise can be reduced, and the bearing capacity is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to synchronous belt technical field, specifically, it is a synchronous belt with herringbone tooth. BACKGROUND

[0002] The herringbone tooth synchronous belt is a kind of high-performance transmission belt, adopts special herringbone tooth design, with high strength, wear resistance, tear resistance and other characteristics, its structure can reduce the friction of belt tooth operation, avoid the immersion of oil and chemicals, can effectively remove dust impurities, reduce friction loss, herringbone tooth synchronous belt transmission efficiency is high, transmission is stable, with buffering, damping effect, and low noise, small vibration, self-guiding, maintenance-free, in addition, it also has self-centering function, so that pulley does not need to block circle, reduces the width of belt and installation space.

[0003] As Chinese patent publication: a herringbone tooth synchronous belt, application number: CN201821017392.2, including annular belt body and the equidistribution of belt tooth at annular belt body inner wall circumference, the belt tooth is symmetric and the two columns of circumferential staggered distribution, each belt tooth extends to the middle from annular belt body inner wall outer end, the inclination angle a of belt tooth is 30-35 degrees, the width b of belt tooth is 1.15-1.2 times of the interval c between adjacent two belt teeth in the same column, the inner side end of each belt tooth is contacted with the inner side end of corresponding adjacent two belt teeth on another column, the herringbone tooth synchronous belt of the utility model transmission precision is high, greatly reduces noise.

[0004] But the above technical scheme, when synchronous belt is driven to rotate by synchronous wheel, synchronous wheel will extrude the air at the place of synchronous belt, so that air is extruded or sheared, thereby generating vortex and turbulence (these vortex and turbulence are one of the main reasons of noise), so that the noise of synchronous belt at present stage is larger, and in the long-term use process of synchronous belt, heat will be generated at the contact place of synchronous belt and synchronous wheel, the synchronous belt at present stage cannot dissipate these heat, so that these heat gradually increases with accumulation, finally leads to deformation and wear of synchronous belt due to thermal expansion. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a synchronous belt with herringbone tooth, which can effectively solve the problem that when synchronous belt is driven to rotate by synchronous wheel, synchronous wheel will extrude the air at the place of synchronous belt, so that air is extruded or sheared, thereby generating vortex and turbulence (these vortex and turbulence are one of the main reasons of noise), so that the noise of synchronous belt at present stage is larger, and in the long-term use process of synchronous belt, heat will be generated at the contact place of synchronous belt and synchronous wheel, the synchronous belt at present stage cannot dissipate these heat, so that these heat gradually increases with accumulation, finally leads to deformation and wear of synchronous belt due to thermal expansion.

[0006] To achieve the above object, the technical scheme adopted by the utility model is:

[0007] A synchronous belt with herringbone teeth, comprising a ring-shaped belt body, a plurality of teeth are uniformly arranged on the ring-shaped belt body, first air exclusion grooves are arranged on both sides of the teeth, and second air exclusion grooves are arranged between the first air exclusion grooves.

[0008] As a preference, the teeth are two rows, and each tooth extends from the outer end of the inner wall of the ring-shaped belt body to the middle.

[0009] As a preference, the first air exclusion grooves and the second air exclusion grooves are in communication with each other.

[0010] As a preference, the first air exclusion grooves are located on the side where the two teeth of the same row are close to each other.

[0011] As a preference, the second air exclusion grooves are located on the side where the two rows of teeth are close to each other.

[0012] As a preference, the second air exclusion grooves penetrate the side of the teeth away from the ring-shaped belt body.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) The utility model firstly installs the ring-shaped belt body on the synchronous wheel, then when the synchronous wheel drives the ring-shaped belt body 1 to rotate through the teeth, the synchronous wheel will extrude the air at the tooth position, at this time, the extruded air is discharged outside the ring-shaped belt body through the first air exclusion grooves and the second air exclusion grooves, the vortex and the turbulent flow caused by the extruded or sheared air are reduced (these vortexes and turbulent flows are one of the main reasons for noise), the purpose of reducing noise is achieved, at the same time, the contact area between the synchronous belt and the air is increased through the first air exclusion grooves and the second air exclusion grooves, so that the heat dissipation effect is improved, a part of the heat generated in the working process is taken away through the flowing air when discharging the air, the temperature of the synchronous belt in the working process is reduced, the deformation and the abrasion caused by thermal expansion are reduced, and then the carrying capacity is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of the utility model synchronous belt with herringbone teeth.

[0016] Figure 2 It is an enlarged structure schematic view of A in the utility model synchronous belt with herringbone teeth. Figure 1

[0017] In the drawing: 1, ring-shaped belt body; 2, tooth; 3, first air exclusion groove; 4, second air exclusion groove. DETAILED DESCRIPTION ​

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0019] As shown in Figure 1 and Figure 2 A synchronous belt with herringbone teeth, comprising a ring-shaped belt body 1, a plurality of teeth 2 are uniformly arranged on the ring-shaped belt body 1, a first air exhaust groove 3 is arranged on both sides of the tooth 2, and a second air exhaust groove 4 is arranged between the two first air exhaust grooves 3.

[0020] The working principle of the synchronous belt with herringbone teeth is as follows:

[0021] In use, first, the ring-shaped belt body 1 is mounted on the synchronous wheel, and then when the synchronous wheel drives the ring-shaped belt body 1 to rotate through the tooth 2, the synchronous wheel will extrude the air at the tooth 2, at this time, the extruded air is exhausted outside the ring-shaped belt body 1 through the first air exhaust groove 3 and the second air exhaust groove 4, reducing the eddy current and turbulence caused by the extrusion or shearing of air (these eddy current and turbulence are one of the main reasons for noise), achieving the purpose of reducing noise, at the same time, the contact area between the synchronous belt and the air is increased through the first air exhaust groove 3 and the second air exhaust groove 4, thereby improving the heat dissipation effect, and a part of the heat generated in the working process is taken away by the flowing air when the air is exhausted, reducing the temperature of the synchronous belt in the working process, reducing the deformation and wear caused by thermal expansion, and thereby improving the carrying capacity.

[0022] Obviously, the above-described embodiments of the present application are only examples for clearly illustrating the present application, and are not a limitation on the embodiments of the present application. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description, and it is impossible to enumerate all the embodiments here. Any obvious changes or modifications derived from the technical solutions of the present application still fall within the protection scope of the present application.

Claims

1. A synchronous belt with herringbone teeth, comprising an endless belt body (1), characterized in that: The annular belt body (1) is uniformly provided with a plurality of teeth (2), the two sides of the teeth (2) are provided with first air exclusion grooves (3), and the two first air exclusion grooves (3) are provided with a second air exclusion groove (4).

2. The timing belt with double helical teeth according to claim 1, characterized in that: The teeth (2) are two rows, and each tooth (2) extends from the outer end of the inner wall of the annular belt body (1) to the middle.

3. The timing belt with double helical teeth according to claim 2, characterized in that: The first air exclusion groove (3) and the second air exclusion groove (4) are in communication with each other.

4. The timing belt with double helical teeth according to claim 3, characterized in that: The first air exclusion groove (3) is located on one side of the two teeth (2) in the same row and close to each other.

5. The timing belt with double helical teeth according to claim 4, characterized in that: The second air exclusion groove (4) is located on one side of the two rows of teeth (2) and close to each other.

6. The timing belt with double helical teeth according to claim 5, characterized in that: The second air exclusion groove (4) penetrates through the side of the tooth (2) away from the annular belt body (1).

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