Vibration reduction belt pulley

Abstract

The utility model discloses a vibration damping belt pulley, which belongs to the technical field of belt pulley structures and comprises a belt pulley body, a connecting port is arranged on the side surface of the belt pulley body, a vibration damping spring is fixedly mounted on the inner wall of the connecting port, and a vibration damping block is fixedly mounted at the bottom of the vibration damping spring. The belt pulley has the advantages that when the belt pulley body is subjected to acting force, the vibration force of the belt pulley body is transmitted to the damping spring, the damping spring vibrates in a small range, the vibration force of the belt pulley body is transmitted to the damping block, and the damping block is arranged in the damping block. Acting force is dispersed through the multiple damping springs, then the acting force is transmitted into the damping blocks through the damping springs, the acting force is absorbed through the damping blocks in the positioning openings, vibration is reduced, the vibration is reduced and transmitted into the center pipe, and the center pipe is kept stable; and the vibration force of the belt pulley body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pulley structures, in particular to a vibration-damping pulley. Background Art

[0002] The vibration damping pulley is one of the important parts of the engine. It is installed on the crankshaft at the front end of the engine to transmit the engine power to other mechanisms such as the air-conditioning compressor, generator, fan belt, etc., and effectively reduce the periodic vibration of the engine shaft system.

[0003] The vibration of the engine is caused by the reciprocating motion of the piston driven by the combustion of fuel and the rotation of the crankshaft connected to the connecting rod to produce work. The rubber vibration damping pulley reduces the vibration of the shaft system by absorbing energy through rubber buffer when it rotates with the engine shaft system.

[0004] However, the commonly used rubber vibration-damping pulley is connected to the crankshaft by a wheel hub, and the power is transmitted to the pulley through a single rubber in the middle. The single-stage rubber has a limited vibration reduction effect. Once the rubber ages and fails, it will cause engine failure and vehicle stalling, or even more serious accidents. This structure has a single function, poor reliability, easy failure and slipping, and poor vibration reduction effect.

[0005] Based on this, the utility model designs a vibration-damping pulley to solve the above-mentioned problem. Utility Model Content

[0006] The purpose of the utility model is to provide a vibration-damping pulley to solve the above technical problems.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a pulley body, a connecting port is opened on the side of the pulley body, a shock-absorbing spring is fixedly installed on the inner wall of the connecting port, a shock-absorbing block is fixedly installed on the bottom of the shock-absorbing spring, a center tube is fixedly installed on the end of the shock-absorbing block away from the shock-absorbing spring, a positioning port is opened on the side of the shock-absorbing block, and a damping block is arranged inside the positioning port.

[0008] Preferably, the two ends of the vibration-damping spring are fixedly connected to the inner wall of the connecting port and the outer wall of the vibration-damping block respectively, and there are a plurality of vibration-damping springs, which are evenly arranged and installed on the vibration-damping block.

[0009] Preferably, there are five shock absorbing blocks, and the five shock absorbing blocks are evenly arranged and installed on the outer wall of the central tube, and the five shock absorbing blocks do not contact the inner wall of the connecting port.

[0010] Preferably, the positioning opening passes through the shock absorbing block, and the damping block passes through the positioning opening, and the damping block is cylindrical.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] During use, when the pulley body is subjected to an action force, its vibration force is transmitted to the vibration-damping spring, and the vibration-damping spring vibrates in a small range, and the action force is dispersed by a plurality of vibration-damping springs, and then the action force is transmitted to the shock-absorbing block by the vibration-damping spring, and the action force is absorbed by the damping block in the positioning port, thereby reducing vibration and reducing the transmission of vibration to the central tube to keep it stable, and the vibration force of the pulley body is reduced by a plurality of vibration-damping springs, shock-absorbing blocks and damping blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a side schematic diagram of the overall structure of this embodiment;

[0015] Figure 2 It is a front schematic diagram of the overall structure of this embodiment.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0017] 1. Pulley body; 2. Connecting port; 3. Vibration-damping spring; 4. Shock-absorbing block; 5. Center tube; 6. Positioning port; 7. Damping block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-2 The utility model provides a technical solution: a vibration-damping pulley, comprising a pulley body 1, a connecting port 2 is opened on the side of the pulley body 1, a vibration-damping spring 3 is fixedly installed on the inner wall of the connecting port 2, a vibration-damping block 4 is fixedly installed on the bottom of the vibration-damping spring 3, a center tube 5 is fixedly installed on the end of the vibration-damping block 4 away from the vibration-damping spring 3, a positioning port 6 is opened on the side of the vibration-damping block 4, and a damping block 7 is arranged inside the positioning port 6. In this embodiment, the center tube 5 is connected to other structures, which can better disperse and reduce vibration force.

[0020] Preferably, the two ends of the shock-absorbing spring 3 are fixedly connected to the inner wall of the connecting port 2 and the outer wall of the shock-absorbing block 4, respectively, and there are several shock-absorbing springs 3, and the several shock-absorbing springs 3 are evenly arranged and installed on the shock-absorbing block 4. In this embodiment, the vibration force can be absorbed and transformed by the several shock-absorbing springs 3, so that the vibration force can be fully transmitted and reduced.

[0021] Preferably, there are five shock absorbing blocks 4, and the five shock absorbing blocks 4 are evenly arranged and installed on the outer wall of the central tube 5, and the five shock absorbing blocks 4 do not contact the inner wall of the connecting port 2. In this embodiment, the damping block 7 can be stably installed through the five shock absorbing blocks 4, and the vibration force can be dispersed and fully absorbed through the five shock absorbing blocks 4.

[0022] Preferably, the positioning hole 6 passes through the shock absorbing block 4, and the damping block 7 passes through the positioning hole 6, and the damping block 7 is cylindrical. In this embodiment, the positioning hole 6 allows the damping block 7 to be stably installed therein without falling off, and the damping block 7 can prevent the vibration damping spring 3 and the shock absorbing block 4 from having too much moving space, and can effectively transfer, disperse and absorb the vibration force.

[0023] A specific application of this embodiment is:

[0024] When the pulley body 1 is subjected to a force, its vibration force is transmitted to the vibration-damping spring 3. The vibration-damping spring 3 vibrates in a small range, and the force is dispersed by multiple vibration-damping springs 3. The force is then transmitted to the shock-absorbing block 4 through the vibration-damping spring 3, and the force is absorbed by the damping block 7 in the positioning port 6 to reduce vibration and reduce the transmission of vibration to the center tube 5.

[0025] In summary, the vibration of the pulley can be reduced and the shock absorbing effect can be improved through structures such as the vibration-damping spring 3, the shock-absorbing block 4, the positioning opening 6 and the damping block 7.

[0026] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vibration-damping pulley, comprising a pulley body (1), characterized in that: A connecting port (2) is provided on the side of the pulley body (1); a damping spring (3) is fixedly mounted on the inner wall of the connecting port (2); a damping block (4) is fixedly mounted on the bottom of the damping spring (3); a center tube (5) is fixedly mounted on one end of the damping block (4) away from the damping spring (3); a positioning port (6) is provided on the side of the damping block (4); a damping block (7) is provided inside the positioning port (6).

2. A vibration-damping pulley according to claim 1, characterized in that: The two ends of the vibration-damping spring (3) are respectively fixedly connected to the inner wall of the connection port (2) and the outer wall of the vibration-damping block (4), and there are a plurality of vibration-damping springs (3), which are evenly arranged and installed on the vibration-damping block (4).

3. A vibration-damping pulley according to claim 1, characterized in that: There are five shock absorbing blocks (4), and the five shock absorbing blocks (4) are evenly arranged and installed on the outer wall of the central tube (5), and the five shock absorbing blocks (4) do not contact the inner wall of the connecting port (2).

4. A vibration-damping pulley according to claim 1, characterized in that: The positioning opening (6) passes through the shock absorbing block (4), and the damping block (7) passes through the positioning opening (6), and the damping block (7) is cylindrical.

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