Chain wheel device with impact reduction and noise reduction functions

Abstract

The utility model discloses a chain wheel device with impact reduction and noise reduction functions, which comprises a chain wheel and a plurality of buffer mechanisms, the chain wheel is provided with the buffer mechanisms which are circumferentially arranged at intervals, the buffer mechanisms and tooth grooves of the chain wheel are arranged in a staggered manner, and each buffer mechanism comprises at least one elastic buffer body. Compared with the prior art, the elastic buffering body has the advantages that the impact force between the roller and the chain wheel can be greatly reduced, the noise is reduced, and the service life of the chain wheel and the chain is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chain drive, in particular to a chain wheel device with the effect of reducing impact and noise reduction. BACKGROUND

[0002] In the prior art, chain drive is one of the commonly used ways in mechanical transmission, and the chains used for power transmission mainly include sleeve roller chain and toothed chain, the sleeve roller chain is composed of inner chain plate, outer chain plate, sleeve, pin shaft and roller, the outer chain plate is fixed on the pin shaft, the inner chain plate is fixed on the sleeve, the roller and the sleeve can rotate relative to each other, and thus the meshing of the chain and the sprocket is mainly rolling friction, the sleeve roller chain can be used singly or in multiple columns, the use in multiple columns can transmit larger power, the sleeve roller chain is lighter in weight, longer in service life and lower in cost than the toothed chain, and is widely applied in power transmission, however, in the running process of the traditional sleeve roller chain drive device, the chain directly contacts the sprocket, and a large impact force is generated between the roller and the sprocket tooth groove, the impact force not only generates a large noise, but also causes the abrasion of the sprocket and the chain to be intensified, thereby shortening the service life of the sprocket and the chain, increasing the maintenance cost and downtime of the equipment. SUMMARY

[0003] The utility model discloses a chain wheel device with the effect of reducing impact and noise reduction.

[0004] To achieve the above-mentioned purpose, the utility model provides a chain wheel device with the effect of reducing impact and noise reduction, including sprocket and a plurality of buffer mechanism, be equipped with the buffer mechanism that is circumferentially spaced apart on the sprocket, the buffer mechanism and the sprocket tooth groove staggered arrangement, the buffer mechanism includes at least one elastic buffer body, the elastic buffer body is used to buffer support the chain plate of chain.

[0005] As preferred, the number of the elastic buffer body is two.

[0006] As preferred, the two elastic buffer bodies are fixed on both sides of the sprocket by bolt pairs respectively.

[0007] As preferred, the elastic buffer body includes inner sleeve body, elastic rubber body and outer sleeve body, and the elastic rubber body is arranged between the inner sleeve body and the outer sleeve body.

[0008] As preferred, the outer circumferential surface of the inner sleeve body is provided with an inner liner I which is spaced apart and located in the elastic rubber body, and the inner liner I includes a support body I and an arc body I arranged on the free end of the support body I.

[0009] As preferred, the inner circumferential surface of the outer sleeve is provided with the inner lining II which is arranged at intervals and located in the elastic rubber body, the inner lining II is staggered with the inner lining I, the inner lining II comprises the support body II and the arc body II arranged on the free end of the support body II.

[0010] As preferred, the gasket is arranged between the inner sleeve and the chain wheel.

[0011] As preferred, the tooth groove is matched with the roller of the chain.

[0012] The chain wheel device has the advantages that the buffering mechanism is arranged on the chain wheel in a circumferential manner at intervals, the buffering mechanism is staggered with the tooth groove of the chain wheel, the buffering mechanism comprises at least one elastic buffering body, the elastic buffering body is used for buffering and supporting the chain plate of the chain, when the chain plate moves close to the chain wheel along with the chain, the chain plate first contacts the elastic buffering body, the elastic buffering body absorbs part of the impact force transmitted by the chain plate, and buffering effect is achieved, then, the roller enters the tooth groove of the chain wheel, is engaged with the chain wheel, and power transmission is completed, due to the buffering effect of the elastic buffering body, the impact force between the roller and the chain wheel is greatly reduced, noise is reduced, and the service life of the chain wheel and the chain is prolonged.

[0013] The features and advantages of the chain wheel device will be described in detail in combination with the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the chain wheel device with the impact reduction and noise reduction effects;

[0015] Figure 2 is a structural schematic view of the buffering mechanism arranged on the chain wheel;

[0016] Figure 3 is a structural schematic view of the elastic buffering body.

[0017] In the drawings: 1-chain wheel, 2-buffering mechanism, 3-tooth groove, 4-chain, 5-gasket, 6-hopper, 21-elastic buffering body, 22-bolt pair, 23-inner lining I, 24-inner lining II, 41-chain plate, 42-roller, 211-inner sleeve, 212-elastic rubber body, 213-outer sleeve, 231-support body I, 232-arc body I, 241-support body II, 242-arc body II. DETAILED DESCRIPTION

[0018] Referring to Figure 1 , Figure 2 and Figure 3This utility model discloses a sprocket device with the functions of reducing impact and noise, including a sprocket 1 and several buffer mechanisms 2. The sprocket 1 is provided with buffer mechanisms 2 arranged in a circumferentially spaced manner. The buffer mechanisms 2 are staggered with the tooth grooves 3 of the sprocket 1. The buffer mechanism 2 includes at least one elastic buffer body 21, which is used to buffer and support the chain plate 41 of the chain 4.

[0019] The number of elastic buffers 21 is two.

[0020] Two elastic buffer bodies 21 are fixed to both sides of the sprocket 1 by bolt pairs 22.

[0021] The elastic buffer 21 includes an inner sleeve 211, an elastic rubber body 212, and an outer sleeve 213, with the elastic rubber body 212 provided between the inner sleeve 211 and the outer sleeve 213.

[0022] The outer peripheral surface of the inner sleeve 211 is provided with an inner liner I23 that is spaced apart and located within the elastic rubber body 212. The inner liner I23 includes a support body I231 and an arc-shaped body I232 provided on the free end of the support body I231.

[0023] The inner circumferential surface of the outer shell 213 is provided with an inner lining II24 spaced apart and located within the elastic rubber body 212. The inner lining II24 and the inner lining I23 are arranged alternately. The inner lining II24 includes a support body II241 and an arc-shaped body II242 provided on the free end of the support body II241.

[0024] A gasket 5 is provided between the inner sleeve 211 and the sprocket 1.

[0025] The tooth groove 3 engages with the roller 42 of the chain 4.

[0026] The working process of this utility model:

[0027] This utility model discloses a sprocket device with impact reduction and noise reduction functions. During operation, when the chain plate 41 moves close to the sprocket 1 along with the chain 4, the chain plate 41 first contacts the elastic buffer 21. The elastic buffer 21 absorbs part of the impact force transmitted from the chain plate 41, playing a buffering role. Subsequently, the roller 42 enters the tooth groove 3 and completes the meshing with the sprocket 1. At this time, because the chain plate 41 has been buffered by the elastic buffer 21, the impact force between the roller 42 and the sprocket 1 is greatly reduced, making the entire transmission process smoother. This working method of buffering before meshing effectively reduces the direct impact between the chain plate 41 and the sprocket 1, thereby reducing the noise generated during chain transmission, reducing the wear of the sprocket and chain, and extending their service life.

[0028] Reduce impact and reduce noise: the direct impact force between the chain plate and the sprocket is greatly reduced by the buffering effect of the elastic buffer body, thereby effectively reducing the noise generated during chain transmission, which is of great significance for places with strict requirements on noise in the working environment, such as precision instrument production workshops, hospitals, etc.

[0029] Increase the service life of the sprocket and the chain: since the elastic buffer body removes part of the force transmitted by the chain plate, the impact force between the roller and the sprocket is reduced, which reduces the wear of the sprocket and the chain. Long-term use can significantly extend the service life of the sprocket and the chain, reduce the maintenance cost of the equipment and the replacement frequency.

[0030] The setting of the inner lining increases the stress area of the elastic rubber body 212, improves the buffering effect and bearing capacity.

[0031] The above examples are illustrative of the present application and are not limiting of the present application. Any simple transformation of the present application falls within the scope of protection of the present application.

Claims

1. A sprocket device having a reduced impact and noise reduction effect, characterized by: The invention discloses a chain wheel and buffer mechanism, which comprises a chain wheel (1) and a plurality of buffer mechanisms (2), wherein the buffer mechanisms (2) are arranged in a circumferential manner on the chain wheel (1), the buffer mechanisms (2) are arranged alternately with tooth grooves (3) of the chain wheel (1), and each buffer mechanism (2) comprises at least one elastic buffer body (21) for buffering and supporting a chain plate (41) of a chain (4).

2. A sprocket wheel device having a reduced impact and noise reduction effect according to claim 1, characterized in that: The number of the elastic buffer bodies (21) is two.

3. A sprocket wheel device having a reduced impact and noise reduction effect according to claim 2, characterized in that: The two elastic buffer bodies (21) are fixed on both sides of the chain wheel (1) by a bolt pair (22).

4. A sprocket wheel device having a reduced impact and noise reduction effect as claimed in claim 3, characterized in that: The elastic buffer body (21) comprises an inner sleeve body (211), an elastic rubber body (212) and an outer sleeve body (213), and the elastic rubber body (212) is arranged between the inner sleeve body (211) and the outer sleeve body (213).

5. A sprocket wheel device having a reduced impact and noise reduction effect as claimed in claim 4, characterized in that: An inner lining I (23) is arranged on an outer circumferential surface of the inner sleeve body (211) and located in the elastic rubber body (212), the inner lining I (23) comprises a support body I (231) and an arc-shaped body I (232) arranged on a free end of the support body I (231).

6. A sprocket wheel device having a reduced impact and noise reduction effect as claimed in claim 5, characterized in that: An inner lining II (24) is arranged on an inner circumferential surface of the outer sleeve body (213) and located in the elastic rubber body (212), the inner lining II (24) is arranged alternately with the inner lining I (23), and the inner lining II (24) comprises a support body II (241) and an arc-shaped body II (242) arranged on a free end of the support body II (241).

7. A sprocket wheel device having a reduced impact and noise reduction effect as claimed in claim 4, characterized in that: A gasket (5) is arranged between the inner sleeve body (211) and the chain wheel (1).

8. A sprocket wheel device having a reduced impact and noise reduction effect according to any one of claims 1 to 7, characterized in that: The tooth groove (3) is matched with a roller (42) of the chain (4).

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