Mute type engine belt pulley

Abstract

The utility model provides a noiseless type engine belt pulley which comprises a mandrel, a shell, a noiseless ring body and a noiseless seat, the outer side of the mandrel is sleeved with the shell, the noiseless ring body is located between the mandrel and the shell, and the noiseless seat is located at the bottom of the noiseless ring body and located between the mandrel and the shell. The silent type engine belt pulley is provided with the silent ring body and the silent grooves, the closed cavity is formed between the silent grooves and used for containing the silent ring body, meanwhile, internal noise can be reduced, the balls on the silent ring body have the effects of reducing friction and absorbing shock, and the service life of the belt pulley is prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of machinery, and particularly relates to a silent engine pulley. Background Art

[0002] The pulley belongs to the disc hub parts. The pulley is mainly used in the occasions of transmitting power over a long distance, such as the power output of a small diesel engine, agricultural vehicles, tractors, automobiles, mining machinery, machining equipment, textile machinery, packaging machinery, lathes, forging machines, the power transmission of some small-horsepower motorcycles, the power transmission of agricultural machinery, air compressors, reducers, speed reducers, generators, cotton ginning machines, and so on.

[0003] When some existing generator pulleys accelerate or decelerate instantaneously, due to the inertial effect of the conveyor belt, the rotational speeds between the conveyor belt and the pulley are not synchronized. The conveyor belt is likely to impact the pulley, resulting in vibration and noise of the conveyor belt. Moreover, when there is rainwater between the pulley and the conveyor belt on a rainy day, it is easy to cause the conveyor belt to slip, reducing the transmission efficiency. Summary of the Invention

[0004] In view of this, the utility model aims to overcome the defects in the prior art and provides a silent engine pulley.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A silent engine pulley includes a core shaft, a housing, a silent ring body and a silent seat. The housing is sleeved outside the core shaft. The silent ring body is located between the core shaft and the housing. The silent seat is located at the bottom of the silent ring body and between the core shaft and the housing.

[0007] Further, a number of balls are arranged on the silent ring body, and the balls are rotatably connected to the silent ring body.

[0008] Further, a first silent groove is provided in the middle of the inner side of the core shaft, and a first stepped groove is opened at the bottom of the first silent groove. A second silent groove is provided in the middle of the inner side of the housing, and a second stepped groove is opened at the bottom of the second silent groove. The first silent groove cooperates with the second silent groove, and the first stepped groove cooperates with the second stepped groove.

[0009] Further, the silent ring body is located between the first silent groove and the second silent groove, and the silent seat is located between the first stepped groove and the second stepped groove.

[0010] The mandrel fits against the top of the housing to maintain the relative position between the mandrel and the housing. There are stepped grooves provided in the middle part of the mandrel and the housing for accommodating the silent ring body. The cavity formed between the stepped grooves and the balls on the silent ring body together serves the functions of noise reduction and silencing, reducing the hard friction between the mandrel and the housing. There are stepped grooves provided at the bottom of the mandrel and the housing, and the stepped grooves are used to install the silent seat, and the silent seat is used to limit the silent ring body and maintain the stability of the overall pulley.

[0011] Furthermore, support members are provided at both ends of the housing, and a buffer layer and a support layer are provided inside each of the support members, and the support layer is located outside the buffer layer.

[0012] Furthermore, a number of wedge teeth are provided on the surface of the housing, and a sound-absorbing layer is provided outside the wedge teeth.

[0013] Compared with the prior art, the present utility model has the following advantages:

[0014] The silent engine pulley of the present utility model is provided with a silent ring body and silent grooves. A closed cavity is formed between the silent grooves. While accommodating the silent ring body, it can reduce the internal noise. The balls on the silent ring body play the roles of reducing friction and shock absorption, improving the service life of the pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0016] Figure 1 is a schematic diagram of the silent engine pulley according to the embodiment of the present utility model.

[0017] DESCRIPTION OF THE REFERENCE NUMERALS

[0018] 1, mandrel; 2, housing; 3, silent ring body; 4, silent seat; 11, first silent groove; 12, first stepped groove; 21, support member; 22, wedge tooth; 23, second silent groove; 24, second stepped groove; 211, buffer layer; 212, support layer; 221, sound-absorbing layer; 31, ball. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0022] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0023] As Figure 1 shown, a silent engine pulley includes a core shaft 1, a housing 2, a silent ring body 3, and a silent seat 4. The housing 2 is sleeved outside the core shaft 1. The silent ring body 3 is located between the core shaft 1 and the housing 2. The silent seat 4 is located at the bottom of the silent ring body 3 and is between the core shaft 1 and the housing 2.

[0024] A number of balls 31 are provided on the silent ring body 3, and the balls 31 are rotatably connected to the silent ring body 3. In the middle of the inner side of the core shaft 1, a first silent groove 11 is provided. At the bottom of the first silent groove 11, a first stepped groove 12 is opened. In the middle of the inner side of the housing 2, a second silent groove 23 is provided. At the bottom of the second silent groove 23, a second stepped groove 24 is opened. The first silent groove 11 cooperates with the second silent groove 23, and the first stepped groove 12 cooperates with the second stepped groove 24. The silent ring body 3 is located between the first silent groove 11 and the second silent groove 23, and the silent seat 4 is located between the first stepped groove 12 and the second stepped groove 24.

[0025] The top of the mandrel 1 is in contact with the top of the outer shell 2 to maintain the relative position between the mandrel 1 and the outer shell 2; a stepped groove is provided in the middle of the mandrel 1 and the outer shell 2 for accommodating the silent ring body 3. The cavity formed between the stepped groove and the balls 31 on the silent ring body 3 together plays a role in noise reduction and silencing, reducing the hard friction between the mandrel 1 and the outer shell 2; a stepped groove is provided at the bottom of the mandrel 1 and the outer shell 2, and the stepped groove is used to install the silent seat 4, and the silent seat 4 is used to limit the silent ring body 3 and maintain the stability of the overall pulley.

[0026] Support members 21 are provided at both ends of the outer shell 2. Buffer layers 211 and support layers 212 are provided inside the support members 21, and the support layer 212 is located outside the buffer layer 211. The support members 21 play a supporting role for the overall structure of the pulley to prevent damage due to force, and also play a certain limiting role for the belt to prevent the belt from slipping off. A plurality of wedge teeth 22 are provided on the surface of the outer shell 2, and a sound-absorbing layer 221 is provided outside the wedge teeth 22. The sound-absorbing layer 221 is used to absorb the noise between the wedge teeth 22 and the belt.

[0027] During installation, first sleeve the mandrel 1 on the engine rotating shaft, then sleeve the outer shell 2 on the mandrel 1 so that the inner side of the part of the outer shell 2 is in contact with the outer side of the top of the mandrel 1, then insert the silent ring body 3 between the first silent groove 11 and the second silent groove 23, and finally insert the silent seat 4 between the first stepped groove 12 and the second stepped groove 24, thereby fixing the positions of the silent ring body 3, the mandrel 1 and the outer shell 2.

[0028] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A silent engine pulley, characterized in that: It includes a core shaft, a shell, a silent ring body and a silent seat. The shell is sleeved on the outer side of the core shaft, the silent ring body is located between the core shaft and the shell, and the silent seat is located at the bottom of the silent ring body and between the core shaft and the shell.

2. The silent engine pulley according to claim 1, characterized in that: A plurality of balls are arranged on the silent ring body, and the balls are rotatably connected to the silent ring body.

3. The silent engine pulley according to claim 1, characterized in that: A first silent groove is provided in the middle inner side of the core shaft, a first stepped groove is provided at the bottom of the first silent groove, a second silent groove is provided in the middle inner side of the shell, a second stepped groove is provided at the bottom of the second silent groove, the first silent groove cooperates with the second silent groove, and the first stepped groove cooperates with the second stepped groove.

4. The silent engine pulley according to claim 3, characterized in that: The silent ring body is located between the first silent groove and the second silent groove, and the silent seat is located between the first stepped groove and the second stepped groove.

5. The silent engine pulley according to claim 1, characterized in that: Support members are provided at both ends of the shell, and a buffer layer and a support layer are provided inside the support members, and the support layer is located outside the buffer layer.

6. The silent engine pulley according to claim 1, characterized in that: A plurality of wedge teeth are arranged on the surface of the shell, and a sound absorbing layer is arranged on the outer side of the wedge teeth.

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