A spinning pulley with stepped positioning groove

Abstract

The utility model relates to the field of spinning pulley, concretely relates to a spinning pulley with stepped positioning groove, including the wheel body and the belt groove of opening in the wheel body inner wall, the wheel body inner wall has successively opened three taper grooves from top to bottom, three taper grooves's diameter from top to bottom is decreasingly, the inner wall side of taper groove is opened and has the mounting hole, the top of taper groove is opened and has the guide inclined plane, the inner wall of belt groove is fixedly connected with the antiskid boss, at least three groups are arranged to the antiskid boss along the equidistance of belt groove circumference. The mounting hole of adjacent taper groove inner wall is staggered and opened. Through three taper grooves of the ladder type distribution in the wheel body, can accurately adapt three groups of different size standard taper sleeve, need not to change the wheel body to satisfy the assembly demand of various axle diameter equipment, significantly improve the wheel body adaptation flexibility, effectively reduced the enterprise inventory spare parts cost and the difficulty of user replacement maintenance.

Description

Technical Field

[0001] This utility model relates to the field of spun pulleys, specifically to a spun pulley with a stepped positioning groove. Background Technology

[0002] Spin-formed pulleys are power transmission components integrally formed through a metal spinning process. They are made from materials such as low-carbon steel and aluminum alloys, and undergo plastic deformation through high-speed rotation and radial pressure. They have core characteristics such as dense structure, light weight, high strength, high dimensional accuracy, and excellent dynamic balance performance. They are widely used in automobiles, motors, engineering machinery and other fields, and have the advantages of both lightweight and high-efficiency transmission.

[0003] Spinned pulleys are typically assembled with shafts using standard tapered sleeves. A tapered locating groove matching the outer tapered surface of the sleeve needs to be cut inside the pulley hub, relying on the friction generated by the pressing of the tapered surfaces to transmit torque. However, existing spun pulleys mostly have tapered grooves of a single specification, only suitable for tapered sleeves of a specific diameter. This results in the same pulley not being able to meet the assembly requirements of equipment with different shaft diameters, lacking adaptability and increasing inventory costs for enterprises and replacement difficulties for users.

[0004] Therefore, it is necessary to invent a spinning pulley with stepped positioning grooves to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a spun pulley with stepped positioning grooves. The three tapered grooves in the stepped design allow the pulley to be fitted with three standard tapered sets of different sizes. This solves the problem that spun pulleys can only meet the installation requirements of a single specification and improves the installation flexibility of spun pulleys.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a spun pulley with a stepped positioning groove, comprising a pulley body and a belt groove formed on the inner wall of the pulley body. The inner wall of the wheel body has three conical grooves arranged sequentially from top to bottom, and the diameters of the three conical grooves decrease from top to bottom. The inner wall of the tapered groove is provided with mounting holes; The top of the conical groove is provided with a guide slope.

[0007] Preferably, the inner wall of the belt groove is fixedly connected with anti-slip ridges, and at least three sets of anti-slip ridges are equidistantly arranged along the circumference of the belt groove.

[0008] Preferably, the mounting holes on the inner walls of adjacent conical grooves are staggered.

[0009] Preferably, the angle between the guide ramp and the central axis of the wheel body is 30° to 40°.

[0010] Preferably, the mounting hole is an internally threaded hole for mounting a tapered sleeve bolt.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This utility model uses three conical grooves arranged in a stepped manner inside the wheel body to accurately fit three sets of standard conical sleeves of different sizes. It can meet the assembly requirements of equipment with various shaft diameters without replacing the wheel body, significantly improving the wheel body's adaptability and effectively reducing the inventory costs for enterprises and the difficulty of replacement and maintenance for users. Attached Figure Description

[0012] 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.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic cross-sectional view of the present invention. Figure 3 This is a top view of the structure of this utility model; Figure 4 This is a front view structural diagram of the present invention; Figure 5 This is a schematic diagram of the assembly structure of the wheel body and belt of this utility model.

[0014] Legend: 1. Wheel body; 2. Belt groove; 3. Tapered groove; 4. Mounting hole; 5. Guide slope; 6. Anti-slip protrusion. Detailed Implementation

[0015] 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.

[0016] This utility model provides, for example Figure 1 - Figure 3 The spin pulley with stepped positioning groove shown includes a pulley body 1 and a belt groove 2, a conical groove 3 and a guide slope 5 formed on the inner wall of the pulley body 1. The inner wall of the wheel body 1 has three conical grooves 3 from top to bottom. The diameter of the three conical grooves 3 decreases from top to bottom. The three conical grooves 3 are arranged in a stepped manner. They can be integrally spun with the wheel body 1 through a spinning process without additional welding or machining. While ensuring the strength of the wheel body 1, it can also accommodate three sets of conical sleeves of different sizes. like Figure 2 , Figure 3 and Figure 5 As shown, the inner wall of the conical groove 3 is provided with mounting holes 4. The mounting holes 4 on the inner walls of adjacent conical grooves 3 are staggered. The staggered mounting holes 4 make it convenient for workers to accurately insert bolts into the required mounting holes 4, improving the convenience of bolt assembly. The mounting holes 4 are internal threaded holes used to install conical sleeve bolts. The bolts are locked in the mounting holes 4 and the inner walls of the threaded holes on the conical sleeve, thus fixing the wheel body 1 to the outer wall of the conical sleeve. like Figure 1 - Figure 3 As shown, a guide slope 5 is provided at the top of the conical groove 3. The guide slope 5 can be integrally spun with the conical groove 3 by a spinning process. The angle between the guide slope 5 and the central axis of the wheel body 1 is 30° to 40°. Through the inclined guiding effect of the guide slope 5, the conical sleeve can be accurately inserted into the inner wall of the conical groove 3, so that the conical sleeve can quickly enter the interior of the conical groove 3, greatly reducing the assembly difficulty of the wheel body 1.

[0017] like Figure 4 As shown, the inner wall of the belt groove 2 is fixedly connected with anti-slip ridges 6. The anti-slip ridges 6 can be integrally spun by a spinning process. At least three sets of anti-slip ridges 6 are equidistantly arranged along the circumference of the belt groove 2. The anti-slip ridges 6 can transform the line contact between the belt and the belt groove 2 into point contact. According to the pressure formula P=F / S known in the art, under the same belt tension, the contact area between the anti-slip ridges 6 and the belt is smaller, the local pressure is significantly increased, the intermolecular friction between rubber and metal is increased, the overall friction coefficient is effectively improved, and thus the torque transmission limit is improved.

[0018] The working principle of this utility model is as follows: When installing the tapered sleeve, align the bolt hole on the tapered sleeve with the mounting hole 4, insert the tapered sleeve into the tapered groove 3, and then tighten the bolt into the mounting hole 4 and the inner wall of the threaded hole on the tapered sleeve. In this way, the wheel body 1 can be fixed on the outer wall of the tapered sleeve. The inner wall of the wheel body 1 has three tapered grooves 3 with decreasing diameters from top to bottom in a stepped manner. Therefore, the wheel body 1 can be adapted to three sets of tapered sleeves of different sizes.

[0019] During the process of inserting the cone sleeve into the conical groove 3, the guide slope 5 can guide the cone sleeve to be accurately inserted into the inner wall of the conical groove 3, so that the cone sleeve can be quickly put into place and reduce the assembly difficulty of the wheel body 1.

[0020] After the belt groove 2 is assembled with the transmission belt, the multiple anti-slip protrusions 6 arranged in the inner circumference of the belt groove 2 can enhance the friction between the belt and the belt groove 2, effectively reducing the phenomenon of belt slippage when the pulley operates at high torque.

[0021] 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 spun pulley with a stepped positioning groove, comprising a pulley body (1) and a belt groove (2) formed on the inner wall of the pulley body (1), characterized in that, The inner wall of the wheel body (1) is provided with three conical grooves (3) from top to bottom, and the diameters of the three conical grooves (3) decrease from top to bottom; The inner wall of the tapered groove (3) is provided with mounting holes (4); The top of the conical groove (3) is provided with a guide slope (5).

2. The spinning pulley with stepped positioning groove according to claim 1, characterized in that: The inner wall of the belt groove (2) is fixedly connected with anti-slip ridges (6), and at least three sets of anti-slip ridges (6) are equidistantly arranged along the circumference of the belt groove (2).

3. The spinning pulley with stepped positioning groove according to claim 1, characterized in that: The mounting holes (4) on the inner walls of adjacent conical grooves (3) are staggered.

4. A spun pulley with stepped positioning groove according to claim 1, characterized in that: The angle between the guide ramp (5) and the central axis of the wheel body (1) is 30° to 40°.

5. A spun pulley with stepped positioning groove according to claim 1, characterized in that: The mounting hole (4) is an internal threaded hole used to install the tapered sleeve bolt.

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