Low-noise chain wheel

Abstract

The low-noise chain wheel comprises a wheel body, an assembly hole is formed in the center of the wheel body, a plurality of tooth parts are arranged on the edge of the wheel body in the circumferential direction in a protruding mode, a fixing opening is formed between every two adjacent tooth parts, a first buffering piece is arranged in each fixing opening, and the fixing openings and the first buffering pieces jointly form tooth groove parts. And when the chain makes contact with the tooth groove part, vibration is absorbed, and noise is reduced. A second buffering piece is further arranged on the surface of at least one side of the wheel body in the circumferential direction. According to the technical scheme, vibration generated in the rotating process of the chain wheel is absorbed, so that noise is reduced, abrasion to the chain wheel can be reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sprockets, in particular to a low-noise sprocket. Background Art

[0002] A sprocket is a wheel with cog-shaped sprocket teeth. It is an indispensable component of chain transmission and is widely used in mechanical transmission in textile machinery, agricultural machinery, food processing, instrumentation and other industries.

[0003] During the high-speed rotation of the sprocket, the high-frequency vibration generated by the contact and friction between the sprocket and the chain will produce a large noise, causing noise pollution to the environment and affecting the workers. At the same time, it also increases the wear of the sprocket and reduces its service life. Utility Model Content

[0004] The main purpose of the utility model is to provide a low-noise sprocket, which is intended to absorb the vibration generated by the sprocket during rotation, thereby reducing noise, reducing the wear of the sprocket and increasing the service life.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a low-noise sprocket, comprising:

[0006] A wheel body, wherein an assembly hole is provided at the center of the wheel body, a plurality of teeth are protruded circumferentially on the edge of the wheel body, a fixing opening is provided between each two adjacent teeth, a first buffer is provided in the fixing opening, and the fixing opening and the first buffer are jointly configured to form a tooth groove portion to absorb vibration and reduce noise when the chain contacts the tooth groove portion, and a second buffer is also circumferentially provided on at least one side surface of the wheel body.

[0007] In an embodiment of the present invention, the edge shape of the fixing opening is consistent with the edge shape of the first buffer component, and the first buffer component is interference-fitted in the fixing opening.

[0008] In an embodiment of the present invention, the first buffer component has a bottom end and a top end, and the width of the bottom end is greater than the width of the top end.

[0009] In an embodiment of the present invention, the edge of the top end is arranged in an arc shape.

[0010] In one embodiment of the present invention, a buffer groove is circumferentially formed on at least one side surface of the wheel body, and the second buffer member is interference-fitted or transition-fitted in the buffer groove.

[0011] In an embodiment of the present invention, the width of the buffer groove gradually decreases along the direction from the groove bottom to the groove opening.

[0012] In an embodiment of the present invention, the first buffer component and the second buffer component are made of rubber.

[0013] The technical solution of the utility model is to arrange a first buffer member on the tooth groove portion of the sprocket, so as to absorb the vibration generated when the chain contacts the tooth groove portion during the rotation of the sprocket, reduce the noise, reduce the wear of the sprocket and increase the service life. In addition, a second buffer member is arranged on the surface of the sprocket to further enhance the effect of absorbing vibration and reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be 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 the structures shown in these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the structure of the low-noise sprocket of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0017] Figure 3 This is an exploded view of the low-noise sprocket of the utility model;

[0018] Figure 4 It is a cross-sectional view of the low-noise sprocket of the utility model.

[0019] Description of Figure Numbers:

[0020] 1. Wheel body; 2. Assembly hole; 3. Tooth portion; 4. Fixing port; 5. First buffer; 51. Bottom end; 52. Top end; 6. Tooth groove portion; 7. Buffer groove; 8. Second buffer.

[0021] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] Reference Figures 1 to 4The utility model proposes a low-noise sprocket, including a wheel body 1, a mounting hole 2 is opened in the center of the wheel body 1, a plurality of tooth portions 3 are convexly provided on the circumferential edge of the wheel body 1, a fixing port 4 is provided between each two adjacent tooth portions 3, a first buffer 5 is provided in the fixing port 4, the fixing port 4 and the first buffer 5 are jointly configured to form a tooth groove portion 6 to absorb vibration and reduce noise when the chain contacts the tooth groove portion 6, and a second buffer 8 is also circumferentially provided on at least one side surface of the wheel body 1.

[0024] It can be understood that the assembly hole 2 is used to install the sprocket on the mechanical equipment. On the edge of the sprocket are several tooth portions 3, and between adjacent tooth portions 3 is a tooth groove portion 6. In this example, the tooth groove portion 6 is formed by the fixing openings 4 between the tooth portions 3 and the first buffer member 5 installed between the fixing openings 4. The first buffer member 5 has the function of shock absorption and buffering. It can be made of rubber, plastic, foam and other materials. In this example, rubber material is preferably used. When the sprocket rotates, the chain is continuously sleeved on the tooth portion 3 and in contact with the tooth groove portion 6. Vibration will be generated in this process, and the first buffer member 5 can absorb the generated vibration, so that the noise cannot be emitted, and no noise pollution will be caused to the environment. The wear of the sprocket during the vibration process is also reduced, which effectively extends the life of the sprocket.

[0025] A second buffer 8 is also provided on one side or both sides of the sprocket. In this example, the second buffer 8 is preferably provided on both sides of the sprocket. The second buffer 8 is circumferentially arranged on the surface of the sprocket. It can be a circular ring, or it can be formed by a plurality of circles, ellipses or other irregular shapes distributed in a ring shape. In this example, it is preferably a circular ring, which can absorb the vibration transmitted along the surface of the sprocket to further enhance the shock absorption and noise reduction effect.

[0026] Reference Figures 1 to 3 In one embodiment of the present application, the edge shape of the fixing opening 4 is consistent with the edge shape of the first buffer member 5 , and the first buffer member 5 is interference fit in the fixing opening 4 .

[0027] It can be understood that since the first buffer component 5 has a certain elasticity, it can be fixed in the fixing port 4 by interference fit, so that the fixation is relatively firm and not easy to loosen. At the same time, the first buffer component 5 and the fixing port 4 are detachable, and it only needs to be taken out with force, which can facilitate the replacement of the first buffer component 5. When the first buffer component 5 is severely worn, it is only necessary to replace the first buffer component 5 in that part without replacing the entire sprocket, which greatly saves costs, reduces the difficulty of maintenance, and simplifies the maintenance process.

[0028] Reference Figure 2 In one embodiment of the present application, the first buffer member 5 has a bottom end 51 and a top end 52 , and the width of the bottom end 51 is greater than the width of the top end 52 .

[0029] It can be understood that the bottom end 51 is the end close to the fixing opening 4, the top end 52 is the end away from the fixing opening 4, and the bottom end 51 is wider than the top end 52, which can prevent the first buffer component 5 from escaping from the fixing opening 4 from the direction of the top end 52, so that the installation of the first buffer component 5 is relatively firm and does not affect the use of the sprocket.

[0030] Reference Figure 2 In one embodiment of the present application, the edge of the top 52 is set in an arc shape.

[0031] Optionally, the edge of the top 52 of the first buffer 5 can be a convex or concave arc, and in this example it is preferably concave. When the edge of the top 52 is a concave arc, the edge line of the first buffer 5 perfectly transitions with the tooth portion 3 to form a tooth groove portion 6, which can reduce the friction when contacting the chain and extend the life of the first buffer 5; when the edge of the top 52 is a convex arc, the first buffer 5 is larger in size and the part in contact with the chain is increased, which can better absorb vibrations.

[0032] Reference Figures 3 to 4 In one embodiment of the present application, a buffer groove 7 is circumferentially provided on at least one side surface of the wheel body 1 , and the second buffer member 8 is interference fit or transition fit in the buffer groove 7 .

[0033] It can be understood that since the second buffer component 8 has a certain elasticity, it can be fixed in the buffer groove 7 by interference fit, so that it is fixed more firmly and not easy to loosen. At the same time, the second buffer component 8 and the buffer groove 7 are detachable, and it only needs to be taken out, which is very convenient, greatly saving the cost of maintenance and replacement, reducing the difficulty of maintenance, and simplifying the maintenance process.

[0034] Reference Figures 3 to 4 In one embodiment of the present application, the width of the buffer groove 7 gradually decreases from the groove bottom to the groove mouth.

[0035] It can be understood that, through the above arrangement, the width of the slot is narrower than the slot bottom, which can prevent the second buffer member 8 from escaping from the buffer slot 7 from the direction of the slot, so that the installation of the second buffer member 8 is more secure, thereby not affecting the use of the sprocket.

[0036] Reference Figures 1 to 4 In one embodiment of the present application, the first buffer member 5 and the second buffer member 8 are made of rubber.

[0037] It can be understood that the use of rubber to make the first buffer member 5 and the second buffer member 8 has the following advantages: excellent shock absorbing performance, rubber has good elasticity and softness, can effectively absorb and disperse vibration, thereby reducing the wear of the sprocket; sound absorption characteristics, rubber material has good sound absorption ability, can effectively absorb sound wave energy, reduce the propagation and reflection of sound, thereby reducing environmental noise and providing a more comfortable working environment; good wear resistance and durability, rubber material usually has good wear resistance and durability, can withstand long-term use and frequent impact loading, is not easily damaged or aged, and maintains a long service life; lightweight and energy-saving and environmentally friendly, rubber material usually has a lower density, can reduce the weight of the sprocket, reduce the quality and energy consumption of the equipment, and realize lightweight design, and rubber is a renewable resource, which meets the requirements of energy saving and environmental protection; easy to process and install, rubber material has good processing performance, can easily carry out cutting, molding, bonding and other processing operations, easy to customize and install, saving manufacturing and installation costs.

[0038] The technical solution of the utility model is to arrange a first buffer member 5 on the tooth groove portion 6 of the sprocket, so as to absorb the vibration generated when the chain contacts the tooth groove portion 6 during the rotation of the sprocket, reduce the noise, reduce the wear of the sprocket, and increase the service life. In addition, a second buffer member 8 is arranged on the surface of the sprocket to further enhance the effect of absorbing vibration and reducing noise.

[0039] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application 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, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0040] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A low noise sprocket, characterized in that: include A wheel body (1), wherein a mounting hole (2) is provided at the center of the wheel body (1), a plurality of tooth portions (3) are convexly provided on the circumferential edge of the wheel body (1), a fixing opening (4) is provided between each two adjacent tooth portions (3), a first buffer (5) is provided in the fixing opening (4), the fixing opening (4) and the first buffer (5) are jointly configured to form a tooth groove portion (6) so as to absorb vibration and reduce noise when a chain contacts the tooth groove portion (6), and a second buffer (8) is also circumferentially provided on at least one side surface of the wheel body (1).

2. A low noise sprocket according to claim 1, characterized in that: The edge shape of the fixing opening (4) is consistent with the edge shape of the first buffer component (5), and the first buffer component (5) is interference-fitted in the fixing opening (4).

3. A low noise sprocket according to claim 2, characterized in that: The first buffer member (5) has a bottom end (51) and a top end (52), and the width of the bottom end (51) is greater than the width of the top end (52).

4. A low noise sprocket according to claim 3, characterized in that: The edge of the top end (52) is arranged in an arc shape.

5. A low noise sprocket according to claim 1, characterized in that: A buffer groove (7) is circumferentially provided on at least one side surface of the wheel body (1), and the second buffer member (8) is interference fit or transition fit in the buffer groove (7).

6. A low noise sprocket according to claim 5, characterized in that: The width of the buffer groove (7) gradually decreases along the direction from the groove bottom to the groove mouth.

7. A low noise sprocket according to any one of claims 1 to 6, characterized in that: The first buffer component (5) and the second buffer component (8) are made of rubber.

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