Low-noise chain

Abstract

The utility model relates to the technical field of chains, in particular to a low-noise chain. According to the technical scheme, the chain comprises a plurality of chain links connected in sequence, each chain link comprises an inner chain link and an outer chain link, each inner chain link comprises two inner chain plates, sleeves are arranged between the two inner chain plates and located at the two ends, a plurality of sound absorbing materials are arranged on the periphery of each sleeve, each outer chain link comprises two outer chain plates, and the outer chain plates are arranged between the two outer chain plates. Pin shafts are arranged at the positions, located at the two ends, of the sides, close to each other, of the two outer chain plates, a plurality of sets of tiny protrusions are arranged on the outer surface of each pin shaft, and lubricating oil ways are formed in the pin shafts. The noise reduction sleeve is simple in overall structure, easy to manufacture and install, low in cost and good in market application prospect, the annular groove is formed in the outer surface of the sleeve and filled with the sound absorption material, vibration and noise generated in the running process of the chain can be effectively absorbed, and noise is reduced.

Description

Technical Field

[0001] This utility model relates to the field of chain technology, and in particular to a low-noise chain. Background Technology

[0002] Chains, as commonly used transmission components in mechanical transmission, have advantages such as high transmission efficiency and strong load-bearing capacity. However, during actual operation, chains generate considerable noise, which not only causes noise pollution in the working environment, affecting the health and work efficiency of operators, but may also adversely affect the service life of the chain. Traditional chain noise reduction methods mainly include lubricating the chain surface and using special materials to manufacture the chain, but these methods have limited noise reduction effects and suffer from problems such as easy lubrication failure and high cost. Therefore, we propose a low-noise chain. Utility Model Content

[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a low-noise chain.

[0004] The technical solution of this utility model is as follows: A low-noise chain, comprising multiple sets of chain links connected in sequence. Each set of chain links includes inner chain links and outer chain links. The inner chain link includes two sets of inner chain plates, and sleeves are provided at both ends between the two sets of inner chain plates. Multiple sets of sound-absorbing materials are provided on the outer periphery of each set of sleeves. The outer chain link includes two sets of outer chain plates, and pins are provided at both ends of the two sets of outer chain plates close to each other. Multiple sets of tiny protrusions are provided on the outer surface of each set of pins. Lubrication oil passages are opened inside the pins. A threaded plug is provided at one end of the pins. The surface of each set of chain links is coated with a lubricating layer.

[0005] Preferably, the outer surfaces of both the inner and outer chain plates are coated with a sound-insulating layer, and the edges of the inner and outer chain plates are rounded.

[0006] Preferably, the two sets of inner chain plates are arranged in parallel, and the two ends of the sleeve are respectively attached to the side of the two sets of inner chain plates that are close to each other.

[0007] Preferably, the outer periphery of the sleeve has multiple sets of annular grooves, and the mounting end of the sound-absorbing material is installed corresponding to the inner wall of the annular groove. The sound-absorbing material is made of rubber.

[0008] Preferably, the two sets of outer chain plates are arranged in parallel, the outer ring of the pin is installed corresponding to the inner ring of the sleeve, and both ends of the pin are installed corresponding to the outer chain plates.

[0009] Preferably, the mounting end of each group of micro protrusions is installed corresponding to the pin shaft, the micro protrusions are arranged in an arc shape, multiple groups of micro protrusions are evenly distributed along the outer periphery of the pin shaft, and the top of the micro protrusions is in contact with the inner wall of the sleeve.

[0010] Preferably, the lubrication circuit includes an axially arranged oil passage and an oil hole, and a radially arranged oil passage and oil hole, wherein the threaded plug cone is connected to the oil passage and oil hole, and the mounting end of the threaded plug cone is installed corresponding to one end of the oil passage and oil hole.

[0011] Preferably, the gap between the inner link and the outer link is set within a reasonable range.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] This utility model has a simple overall structure, is easy to manufacture and install, has low cost, and has good market application prospects. By applying a lubricating coating to the chain surface, the friction coefficient between the components is reduced, thus reducing friction noise. By setting an annular groove on the outer surface of the sleeve and filling it with sound-absorbing material, the vibration and noise generated during chain operation can be effectively absorbed, reducing noise generation. The sound-insulating coating on the surfaces of the inner and outer chain plates further blocks the transmission of noise and improves the noise reduction effect. At the same time, the tiny protrusions on the pin surface increase the friction between the pin and the sleeve, making the chain transmission more stable and reducing noise generated by relative sliding. The lubrication oil circuit can lubricate the chain and sprocket, reducing the friction between the chain and sprocket. This further reduces noise from the chain during operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the link in this utility model;

[0016] Figure 3 This is an exploded view of the structure of the chain link in this utility model;

[0017] Figure 4 This is a partial cross-sectional view of the pin shaft in this utility model.

[0018] Reference numerals: 1. Link 1; 11. Inner link; 111. Inner link plate; 112. Sleeve; 113. Sound-absorbing material; 114. Annular groove; 12. Outer link; 121. Outer link plate; 122. Pin; 123. Micro protrusion; 2. Lubricating oil passage; 21. Oil passage; 22. Oil hole; 3. Threaded plug cone; 4. Lubricating layer; 5. Sound insulation layer. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. Example

[0020] like Figure 1-4 As shown, the present invention proposes a low-noise chain, which includes multiple sets of chain links 1 connected in sequence. The surface of each set of chain links 1 is coated with a lubricating layer 4. The lubricating layer 4 reduces the friction coefficient between the chain components and reduces friction noise.

[0021] Each link 1 includes an inner link 11 and an outer link 12. The gap between the inner link 11 and the outer link 12 is set within a reasonable range. The inner link 11 includes two sets of inner link plates 111, which are arranged in parallel. A sleeve 112 is provided at both ends of the two sets of inner link plates 111. The two ends of the sleeve 112 are respectively fitted to the adjacent side of the two sets of inner link plates 111. The two ends of the sleeve 112 are fixedly connected to the adjacent side of the two sets of inner link plates 111. The sleeve 112 is connected to the inner link... The interference fit of plate 111 ensures the stability of the connection between sleeve 112 and inner chain plate 111, reducing noise caused by loosening. Multiple sets of sound-absorbing materials 113 are provided on the outer periphery of each set of sleeves 112. Multiple sets of annular grooves 114 are opened on the outer periphery of sleeves 112. The installation end of the sound-absorbing material 113 is installed corresponding to the inner wall of the annular groove 114. The sound-absorbing material 113 is made of rubber. The setting of the sound-absorbing material 113 can effectively absorb the vibration and noise generated during the operation of the chain, reducing the generation of noise.

[0022] The outer link 12 includes two sets of outer link plates 121, which are arranged in parallel. The outer surfaces of both the inner link plate 111 and the outer link plate 121 are coated with a sound-insulating layer 5, which is made of damping paint. This layer further blocks noise transmission and improves noise reduction. The edges of the inner link plate 111 and the outer link plate 121 are rounded to avoid additional noise from sharp edges, further optimizing the chain's noise reduction performance. Pins 122 are located at both ends of the two sets of outer link plates 121, close to each other. The outer ring of the pins 122... The pin 122 is rotatably connected to the sleeve 112 and is installed corresponding to the inner ring of the sleeve 112. Both ends of the pin 122 are installed corresponding to the outer chain plate 121 and are fixedly connected to the outer chain plate 121. Each set of pins 122 has multiple sets of micro protrusions 123 on its outer surface. The mounting end of each set of micro protrusions 123 is installed corresponding to the pin 122. The micro protrusions 123 are arranged in an arc shape. Multiple sets of micro protrusions 123 are evenly distributed along the outer circumference of the pin 122. The top of the micro protrusions 123 is in contact with the inner wall of the sleeve 112. The setting of micro protrusions 123 increases the friction between the pin 122 and the sleeve 112, making the chain drive more stable and reducing the noise generated by relative sliding.

[0023] The pin 122 has an internal lubrication oil passage 2, which includes an axially arranged oil passage and an oil hole 21 and a radially arranged oil passage 22. The oil passage 22 is connected to the oil passage and the oil hole 21. One end of the pin 122 is provided with a threaded plug cone 3. The mounting end of the threaded plug cone 3 is installed corresponding to one end of the oil passage and the oil hole 21. The threaded plug cone 3 is threadedly connected to the inner wall of one end of the oil passage and the oil hole 21. The threaded plug cone 3 can seal the oil passage and the oil hole 21, which is convenient for disassembly and assembly and allows the operator to quickly inject oil into the lubrication oil passage 2. The composition of the lubricating oil in the lubrication oil passage 2 is compatible with the composition of the lubrication layer 4. The lubrication oil passage 2 can lubricate the chain and sprocket again, reduce the friction between the chain and the sprocket, and thus further reduce the noise of the chain.

[0024] In this embodiment, firstly, two inner chain plates 111 coated with sound insulation layer 5 are placed in parallel. Then, two sleeves 112 with sound-absorbing material 113 are fixedly connected to the two ends between the two inner chain plates 111 to form inner chain links 11. Next, two outer chain plates 121 coated with sound insulation layer 5 are placed in parallel. Two pins 122 with small protrusions 123 are fixedly connected to the two ends between the two outer chain plates to form outer chain links 12. Then, multiple inner chain links 11 and outer chain links 12 are connected alternately in sequence so that the pins 122 can be rotatably inserted into the sleeves 112 to form a complete chain. Finally, a lubricating layer 4 is coated on the surface of the chain.

[0025] When the chain is rotating, the lubricating oil in the lubrication oil circuit 2 will slowly seep out through 22 to lubricate the chain and sprocket. When it is necessary to add lubricating oil to the lubrication oil circuit 2, simply rotate the threaded plug cone 3 to remove it and inject it through one end of the oil passage hole 21.

[0026] The above-described specific embodiments are merely preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above-described specific embodiments.

Claims

1. A low-noise chain, comprising multiple sets of chain links (1) connected in sequence, characterized in that: Each set of chain links (1) includes an inner chain link (11) and an outer chain link (12). The inner chain link (11) includes two sets of inner chain plates (111). A sleeve (112) is provided at both ends between the two sets of inner chain plates (111). Multiple sets of sound-absorbing materials (113) are provided on the outer periphery of each set of sleeves (112). The outer chain link (12) includes two sets of outer chain plates (121). A pin (122) is provided at both ends of the two sets of outer chain plates (121) close to each other. Multiple sets of small protrusions (123) are provided on the outer surface of each set of pins (122). A lubricating oil passage (2) is opened inside the pin (122). A threaded plug cone (3) is provided at one end of the pin (122). A lubricating layer (4) is coated on the surface of each set of chain links (1).

2. The low-noise chain according to claim 1, characterized in that, The outer surfaces of the inner link plate (111) and the outer link plate (121) are coated with a sound insulation layer (5), and the edges of the inner link plate (111) and the outer link plate (121) are rounded.

3. The low-noise chain according to claim 1, characterized in that, The two sets of inner chain plates (111) are arranged in parallel, and the two ends of the sleeve (112) are respectively close to each other on one side of the two sets of inner chain plates (111).

4. A low-noise chain according to claim 1, characterized in that, The sleeve (112) has multiple sets of annular grooves (114) on its outer periphery. The mounting end of the sound-absorbing material (113) is installed corresponding to the inner wall of the annular groove (114). The sound-absorbing material (113) is made of rubber.

5. A low-noise chain according to claim 1, characterized in that, The two sets of outer chain plates (121) are arranged in parallel. The outer ring of the pin (122) is installed corresponding to the inner ring of the sleeve (112). The two ends of the pin (122) are installed corresponding to the outer chain plates (121).

6. A low-noise chain according to claim 1, characterized in that, The mounting end of each set of micro protrusions (123) is installed corresponding to the pin (122). The micro protrusions (123) are arranged in an arc shape. Multiple sets of micro protrusions (123) are evenly distributed along the outer periphery of the pin (122). The top of the micro protrusions (123) is in contact with the inner wall of the sleeve (112).

7. A low-noise chain according to claim 1, characterized in that, The lubrication circuit (2) includes an axially arranged oil passage and an oil hole (21) and a radially arranged (22). The (22) is connected to the oil passage and the oil hole (21). The mounting end of the threaded plug cone (3) is installed corresponding to one end of the oil passage and the oil hole (21).

8. A low-noise chain according to claim 1, characterized in that, The gap between the inner link (11) and the outer link (12) is set within a reasonable range.

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