Belt pulley with anti-deviation guide ribs

Abstract

The utility model relates to the field of pulley, concretely relates to a pulley with anti-deviation guide rib, including the wheel body, the wheel body is along its equidistance and is opened with three groups of wheel grooves for assembling the belt, the both sides inner wall top of wheel groove is fixedly connected with annular locating rib, the both sides inner wall of wheel groove is opened with at least three groups of heat dissipation grooves, the inner wall of wheel body is opened with the taper sleeve hole and the through -hole, the taper sleeve hole and wheel body are in coaxial state, through setting up annular locating rib on the top of wheel groove both sides inner wall can form two -way restraint to the both sides of belt, effectively block belt continuous axial displacement, avoid its separation wheel groove, so can guarantee the stable operation of belt, and the contact surface of annular locating rib and belt is arc structure, can reduce the friction resistance and stress concentration of belt and annular locating rib contact instant, reduce the wear and tear of belt edge, guarantee the stability and service life of belt in the transmission process.

Description

Technical Field

[0001] This utility model relates to the field of pulleys, and more specifically to a pulley with anti-deviation guide ribs. Background Technology

[0002] Pulleys are core components in mechanical transmission systems. They transmit power through the interaction of the pulley groove and the belt. With their advantages of simple structure, smooth transmission, and low cost, they are widely used in various power output scenarios such as motors, machine tools, conveying equipment, and agricultural machinery.

[0003] Existing pulleys mostly rely on pulley grooves to achieve belt installation and positioning. However, in actual applications, if there is a coaxiality deviation or uneven tension in the initial installation of the belt, the belt is prone to shifting under axial force during operation. This not only aggravates the wear between the belt and the pulley groove and reduces transmission efficiency, but in severe cases, it can also cause the belt to detach from the pulley groove, leading to equipment shutdown. The overall transmission stability urgently needs to be improved.

[0004] Therefore, it is necessary to invent a pulley with anti-deviation guide ribs to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a pulley with anti-deviation guide ribs. By setting annular positioning ribs on the top of the inner walls on both sides of the pulley groove, bidirectional constraints can be formed on both sides of the belt, preventing the belt from detaching from the pulley groove due to axial force. This ensures the stable operation of the belt and solves the problems of belts being easily deviated, worn, and reduced transmission efficiency due to axial force.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pulley with anti-deviation guide ribs, comprising: The wheel body has three sets of wheel grooves equidistantly spaced along its circumference on its inner wall for mounting belts; The top of the inner walls on both sides of the wheel groove is fixedly connected with annular positioning ribs; At least three sets of heat dissipation grooves are provided on the inner walls of both sides of the wheel groove in a circumferential manner.

[0007] Preferably, the inner wall of the wheel body is provided with a tapered sleeve hole and a through hole.

[0008] Preferably, the conical sleeve hole and the wheel body are coaxial, and at least three sets of through holes are arranged in a circular array with the central axis of the conical sleeve hole as the center point.

[0009] Preferably, the heat dissipation groove is a spiral groove structure, and the spiral direction is consistent with the rotation direction of the wheel.

[0010] Preferably, the depth of the heat dissipation groove is 0.8-1.3m and the width is 1-2mm.

[0011] Preferably, the annular positioning rib is a circular annular structure, and the cross-section of the annular positioning rib is arc-shaped, with the arc-shaped structure facing the belt side.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This invention addresses the issue of belt misalignment due to axial force. By installing annular positioning ribs on the top of the inner walls on both sides of the pulley groove, a bidirectional constraint is formed on both sides of the belt, effectively preventing continuous axial displacement and avoiding detachment from the pulley groove. This ensures stable belt operation. Furthermore, the arc-shaped contact surface between the annular positioning ribs and the belt reduces frictional resistance and stress concentration at the moment of contact, minimizing belt edge wear and ensuring smooth operation and extended service life. The spiral heat dissipation grooves, aligned with the pulley's direction of rotation, not only accelerate heat dissipation from the friction between the belt and the pulley groove, preventing accelerated belt aging due to high temperatures, but also utilize the airflow disturbance during rotation to generate a weak radial guiding force. This force, combined with the physical limiting function of the annular positioning ribs, further optimizes the operational stability of the transmission system. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the pulley and belt assembly structure of this utility model; Figure 4 This utility model Figure 3 A magnified structural diagram at point A.

[0015] Legend: 1. Wheel body; 2. Wheel groove; 3. Tapered sleeve hole; 4. Through hole; 5. Annular positioning rib; 6. Heat dissipation groove. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] This utility model provides, for example Figure 1 - Figure 3The pulley with anti-deviation guide rib shown includes a pulley body 1, an annular positioning rib 5, and a heat dissipation groove 6; The wheel body 1 has three sets of wheel grooves 2 equidistantly spaced along its circumference for mounting belts. The wheel grooves 2 and the annular positioning ribs 5 are made in one piece. The top of the inner walls on both sides of the wheel groove 2 is fixedly connected with annular positioning ribs 5. After the belt is assembled inside the wheel groove 2, it is necessary to control the arc surface of the annular positioning rib 5 to maintain a fit gap of 0.5-1mm with the side of the belt to avoid the belt from contacting the annular positioning rib 5 for a long time during operation. The annular positioning rib 5 is a circular ring structure with an arc-shaped cross-section facing the belt side. The arc surface of the annular positioning rib 5 can contact the side of the belt, which can reduce the frictional resistance and stress concentration at the moment of contact between the belt and the annular positioning rib 5 and reduce the wear of the belt edge. At least three sets of heat dissipation grooves 6 are provided on the inner walls of both sides of the wheel groove 2. The heat dissipation grooves 6 are used to dissipate heat from the wheel groove 2, so as to avoid the belt aging accelerated by high temperature and improve the service life of the belt.

[0018] like Figure 1 As shown, the inner wall of the wheel body 1 is provided with a tapered sleeve hole 3 and a through hole 4. The tapered sleeve hole 3 and the wheel body 1 are coaxial. The tapered sleeve hole 3 is used to assemble the tapered sleeve. The tapered sleeve can be used to install the wheel body 1 on the shaft. The through holes 4 are arranged in at least three sets in a circular array with the central axis of the tapered sleeve hole 3 as the center point. The opening of the through holes 4 can greatly reduce the weight of the wheel body 1 without affecting the overall strength of the wheel body 1, thereby reducing the load loss of the transmission system and improving the transmission efficiency.

[0019] like Figure 2 - Figure 4 As shown, the heat dissipation groove 6 has a spiral groove structure, and the spiral direction is consistent with the rotation direction of the wheel 1. The groove depth of the heat dissipation groove 6 is 0.8-1.3m, and the groove width is 1-2mm. The groove depth and width design of the heat dissipation groove 6 effectively avoids airflow obstruction while maximizing the heat dissipation area. When the wheel 1 rotates, it can quickly guide air into the heat dissipation groove 6 and flow along the spiral path. Compared with shallow grooves, the heat dissipation area can be increased by 25%-35%, which can reduce the working temperature of the contact area between the belt and the wheel groove 2 by 5-8℃, effectively delaying the aging of the belt due to high temperature.

[0020] The working principle of this utility model is as follows: After the belt is assembled inside the pulley groove 2, the arc-shaped surface of the annular positioning rib 5 set on the inner wall of the pulley groove 2 maintains a precise fit gap of 0.5-1mm with the side of the belt. During the operation of the pulley, if the belt is subjected to axial force and tends to deviate, when the deviation exceeds the preset gap, the side of the belt will flexibly contact the arc-shaped surface of the annular positioning rib 5. The annular positioning rib 5 forms a bidirectional constraint on both sides of the belt through physical limiting, effectively preventing the belt from continuously displacing axially and avoiding it from leaving the pulley groove 2. At the same time, the arc-shaped surface design of the annular positioning rib 5 transforms the traditional rigid contact into a line contact, significantly reducing the frictional resistance and stress concentration at the moment of contact, reducing belt edge wear, and ensuring the smoothness and service life of the belt during transmission.

[0021] When the wheel body 1 is working, the spiral heat dissipation groove 6 opened on the inner wall of the wheel groove 2 rotates synchronously with the wheel body 1. At this time, the heat dissipation groove 6 can form a directional airflow channel and guide the air to flow along the spiral path. The heat dissipation groove 6 not only increases the heat dissipation surface area of ​​the wheel groove 2, but also prolongs the residence time of the airflow in the contact area, accelerating the dissipation of heat generated by the friction between the belt and the wheel groove 2, and avoiding the accelerated aging of the belt due to high temperature. In addition, the opening direction of the spiral heat dissipation groove 6 is consistent with the running direction of the wheel body 1. When rotating, it generates a weak radial guiding force through airflow disturbance. This force works synergistically with the physical limiting function of the annular positioning rib 5 to improve the axial positioning accuracy of the belt from both active guidance and passive constraint dimensions, and further optimize the operating stability of the transmission system.

[0022] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pulley with anti-deviation guide ribs, characterized in that, include: The inner wall of the wheel body (1) is provided with three sets of wheel grooves (2) at equal intervals along its circumference for mounting belts; The top of the inner walls on both sides of the wheel groove (2) is fixedly connected with annular positioning ribs (5); At least three sets of heat dissipation grooves (6) are provided on the inner walls of both sides of the wheel groove (2).

2. A pulley with anti-deviation guide ribs according to claim 1, characterized in that: The inner wall of the wheel body (1) is provided with a tapered sleeve hole (3) and a through hole (4).

3. A pulley with anti-deviation guide ribs according to claim 2, characterized in that: The conical sleeve hole (3) and the wheel body (1) are coaxial, and the through hole (4) is provided in at least three sets in a circular array with the central axis of the conical sleeve hole (3) as the center point.

4. A pulley with anti-deviation guide ribs according to claim 1, characterized in that: The heat dissipation groove (6) is a spiral groove structure, and the spiral direction is consistent with the rotation direction of the wheel (1).

5. A pulley with anti-deviation guide ribs according to claim 4, characterized in that: The depth of the heat dissipation groove (6) is 0.8-1.3m and the width is 1-2mm.

6. A pulley with anti-deviation guide ribs according to claim 1, characterized in that: The annular positioning rib (5) is a circular structure, and the cross-section of the annular positioning rib (5) is an arc-shaped structure, with the arc-shaped structure facing the belt side.

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