Low noise transmission gear structure

Abstract

The utility model discloses a low noise's transmission gear structure belongs to transmission gear mechanism field, and the outside of transmission gear group is equipped with upper gear box, lower gear box, and the lower end four angle department of lower gear box is equipped with mounting seat, and the bearing assembly is equipped between upper gear box, lower gear box and transmission shaft, and the smooth connection of transmission shaft and gear box is realized through bearing assembly, the inside of lower gear box, upper gear box forms sound insulation chamber, and is filled with sound insulation chamber filling material, and the lateral wall of upper gear box is equipped with sound insulation sleeve, and the sound insulation sleeve inserts lubricating oil injector, and the sound insulation sleeve hoop is equipped with on sound insulation sleeve and lubricating oil injector. Sound insulation box mechanism provides the quiet operation environment for equipment, and lubricating oil injection mechanism ensures the stability of equipment transmission and service life, and the common action of both, make equipment reduce the noise, improve transmission efficiency, prolong the service life of equipment, provide the powerful guarantee for the stable operation of equipment.

Description

Technical Field

[0001] This utility model relates to the field of transmission gear mechanisms, and in particular to a low-noise transmission gear structure. Background Technology

[0002] Closed gear drives: Gears, shafts, and bearings are all housed in a closed housing, ensuring good lubrication, preventing dust and sand from entering, and allowing for precise installation. Closed gear drives are widely used in high-speed, critical transmission applications. Open gear drives: Gears are exposed, making good lubrication impossible and susceptible to corrosion from dust and hard particles. Open gear drives are mostly used in low-speed or less critical transmission applications. Semi-open gear drives: These fall between closed and open drives; the gears are partially immersed in an oil bath and have a protective cover but are not completely sealed.

[0003] Despite continuous advancements in design and manufacturing technology, current transmission gear structures still produce friction noise during transmission. This noise primarily originates from the relative sliding and friction between the gear teeth during meshing, and is particularly noticeable under high loads or high speeds.

[0004] Over time, gear friction noise may increase, mainly due to the following reasons: First, the gear tooth surface will wear under long-term friction, leading to changes in tooth profile and increased tooth surface roughness, which intensifies friction and vibration, generating greater noise. Second, the lubrication condition of the gear transmission system may deteriorate with prolonged use. Insufficient lubrication will increase direct contact between tooth surfaces, increasing friction and noise. Finally, loosening or improper installation of gear transmission components may also cause abnormal vibration and noise during operation, and this problem may become more serious with increasing usage time. Utility Model Content

[0005] The main objective of this invention is to provide a low-noise transmission gear structure that can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A low-noise transmission gear structure includes a transmission shaft and a transmission gear set, wherein the transmission gear set is mounted on the transmission shaft; The transmission gear set is provided with an upper gear box and a lower gear box on the outside. The lower gear box is provided with mounting bases at the four corners of its lower end. The upper gear box, the lower gear box and the transmission shaft are provided with bearing assemblies, and the transmission shaft and the gear box are smoothly connected through the bearing assemblies. The lower gearbox and the upper gearbox form a sound insulation cavity inside, which is filled with sound insulation cavity filler. The side wall of the upper gearbox is provided with a sound insulation sleeve. A lubricating oil syringe is inserted into the sound insulation sleeve. A sound insulation clamp is fitted on the lubricating oil syringe and the sound insulation sleeve to achieve the sound insulation operation at this point.

[0007] In a further preferred embodiment, the four mounting seats are located at the four corners of the lower gearbox, and the mounting seats and the lower gearbox are designed as a single unit. The end face of each mounting seat is provided with a round hole for mounting the gearbox. In a further preferred embodiment, a flange is provided at the connection between the upper gearbox and the lower gearbox, and the two flanges are fixed by bolts. A sealing ring is provided at the connection between the upper gearbox and the lower gearbox. The sound insulation sleeve is designed as an integral part of the upper gearbox, and the inner cavity of the sound insulation sleeve is connected to the sound insulation cavity of the upper gearbox. The sound insulation cavity filler is filled in the inner cavity of the sound insulation sleeve. In a further preferred embodiment, the bearing assembly includes a bearing housing and a bearing, the bearing being mounted on the bearing housing, the bearing housing being bolted to the upper gearbox and the lower gearbox, and the drive shaft being located in the gap between the upper gearbox and the lower gearbox; In a further preferred embodiment, the lubricating oil injector is threadedly connected to the soundproof sleeve, the lubricating oil injector is aligned with the transmission gear set in the upper gearbox, the side wall of the lubricating oil injector is provided with graduations, and the front end of the lubricating oil injector is connected to an injection needle. In a further preferred embodiment, the soundproof sleeve has a ring-shaped cross-section and an elastic section in the middle. The opening of the soundproof sleeve has a protruding strip. Bolts are inserted into the holes on the protruding strip to achieve a tight connection between the soundproof sleeve and the soundproof sleeve. The soundproof sleeve is extended to the lubricating oil injector.

[0008] Compared with the prior art, the present invention has the following beneficial effects: The sound insulation cavities formed inside the lower and upper gearboxes are filled with sound insulation filler material, which can effectively absorb noise and reduce its propagation. At the same time, the sound insulation sleeves and sound insulation clamps set on the side walls of the upper gearbox further enhance the sound insulation effect, prevent noise leakage, and provide a good quiet operating environment for the equipment.

[0009] The lubricating oil injector is threaded onto the soundproof sleeve, allowing for accurate alignment with the transmission gear set. Its side wall is marked with graduations for easy control of the lubricating oil injection volume. The injection needle connected to the front end facilitates precise injection of lubricating oil into the parts that require lubrication, ensuring smooth transmission and extending the service life of the equipment.

[0010] The soundproof enclosure provides a quiet operating environment for the equipment, while the lubricating oil injection mechanism ensures the smoothness of the equipment's transmission and its service life. Together, they reduce noise, improve transmission efficiency, and extend the equipment's service life, providing a strong guarantee for the stable operation of the equipment. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the transmission gear set and transmission shaft of this utility model; Figure 3 This is a cross-sectional view of the overall structure of this utility model; Figure 4 This is an exploded view of the upper gearbox, soundproof sleeve, lubricating oil injector, and scale of this utility model.

[0012] In the diagram: 1. Lower gearbox; 2. Mounting base; 3. Upper gearbox; 4. Sound insulation cavity filler; 5. Drive shaft; 6. Drive gear set; 7. Bearing assembly; 8. Sound insulation sleeve; 9. Sound insulation clamp; 10. Lubricating oil injector; 11. Scale. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] like Figure 1 - Figure 4 As shown, a low-noise transmission gear structure includes the following key components: a drive shaft 5, a transmission gear set 6, and the drive shaft 5 mounted on the transmission gear set 6. The transmission gear set 6 is externally equipped with an upper gearbox 3 and a lower gearbox 1, which together form the protective housing of the gear set. Mounting seats 2 are located at the four corners of the lower end of the lower gearbox 1; these mounting seats 2 are integrally designed with the lower gearbox 1, providing stable support for the gearbox. Bearing assemblies 7 are provided between the upper gearbox 3, the lower gearbox 1, and the drive shaft 5. The bearing assemblies 7 are bolted to the upper gearbox 3 and the lower gearbox 1, ensuring a smooth connection between the drive shaft 5 and the gearbox.

[0015] The interiors of the lower gearbox 1 and the upper gearbox 3 form a soundproof cavity, which is filled with soundproof cavity filler 4. This filler can absorb noise and reduce its propagation. The side wall of the upper gearbox 3 is provided with a soundproof sleeve 8, into which a lubricating oil syringe 10 is inserted. A soundproof clamp 9 is fitted on the lubricating oil syringe 10 and the soundproof sleeve 8. The soundproofing operation is achieved through the tight connection of the soundproof clamp 9.

[0016] Four mounting bases 2 are located at the four corners of the lower gearbox 1. The end faces of the mounting bases 2 have round holes for mounting the gearboxes. A flange is provided at the connection between the upper gearbox 3 and the lower gearbox 1. The two flanges are fixed with bolts to ensure a tight connection of the gearboxes. A sealing ring is also provided at the connection between the upper gearbox 3 and the lower gearbox 1 to further prevent noise leakage. The soundproof sleeve 8 is integrated with the upper gearbox 3. The inner cavity of the soundproof sleeve 8 is connected to the soundproof cavity of the upper gearbox 3. The soundproof cavity filler 4 fills the inner cavity of the soundproof sleeve 8, enhancing the sound insulation effect.

[0017] The bearing assembly 7 includes a bearing housing and a bearing. The bearing is mounted on the bearing housing, which is bolted to the upper gearbox 3 and the lower gearbox 1. The drive shaft 5 is located in the gap between the upper gearbox 3 and the lower gearbox 1, ensuring smooth transmission. The lubricating oil injector 10 is threaded onto the soundproof sleeve 8. The lubricating oil injector 10 is aligned with the transmission gear set 6 in the upper gearbox 3. The side wall of the lubricating oil injector 10 has graduations 11 for easy control of the lubricating oil injection volume. An injection needle is connected to the front end of the lubricating oil injector 10, facilitating precise injection of lubricating oil into the areas requiring lubrication.

[0018] The soundproof sleeve 9 has a ring-shaped cross-section and an elastic section in the middle, allowing it to fit tightly onto the soundproof sleeve 8. A protruding strip is provided at the opening of the soundproof sleeve 9; bolts are inserted into holes in the protruding strip to secure the soundproof sleeve 9 to the soundproof sleeve 8. The soundproof sleeve 9 also extends to the lubricating oil injector 10, further improving the sound insulation effect.

[0019] Mount the bearings onto the bearing housings of bearing assembly 7, and use bolts to install bearing assembly 7 into the corresponding positions on the upper gearbox 3 and lower gearbox 1. Place the drive shaft 5 in the gap between the upper gearbox 3 and lower gearbox 1, ensuring it is properly aligned with the drive gear set 6.

[0020] The sound insulation cavity filler 4 is filled into the sound insulation cavity formed by the lower gearbox 1 and the upper gearbox 3, including the inner cavity of the sound insulation sleeve 8. The upper gearbox 3 and the lower gearbox 1 are tightly connected by flanges and bolts, ensuring that the sealing ring is correctly installed to prevent noise leakage. The lubricating oil injector 10 is then connected to the sound insulation sleeve 8 by threads and secured with the sound insulation clamp 9, ensuring that the elastic part of the sound insulation clamp 9 fits tightly. The protruding strip of the sound insulation clamp 9 is fixed with bolts. The entire device is installed in the designated position through the round hole of the mounting base 2.

[0021] Before use, check that all components are installed correctly, especially the connections of the bearing assembly 7, drive shaft 5, and drive gear set 6. Periodically inject lubricating oil into the drive gear set 6 using the lubricating oil injector 10, controlling the amount of lubricating oil using the graduations 11 on the side of the injector. During use, monitor the equipment's operating status to ensure there is no abnormal noise or vibration.

[0022] Confirm that the lubricating oil injector 10 is correctly installed on the soundproof sleeve 8 and that the injection needle is aligned with the lubrication point of the transmission gear set 6. Rotate the lubricating oil injector 10 and measure the required amount of lubricating oil according to the scale 11 on the side wall. Slowly push the injector piston to precisely inject the lubricating oil through the injection needle into the designated area of ​​the transmission gear set 6. After injection, check for any lubricating oil leaks and ensure that all components are operating normally.

[0023] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0024] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A low-noise transmission gear structure, comprising a transmission shaft (5) and a transmission gear set (6), wherein the transmission shaft (5) is mounted on the transmission gear set (6), characterized in that: The transmission gear set (6) is provided with an upper gear box (3) and a lower gear box (1) on the outside. The lower gear box (1) is provided with mounting bases (2) at the four corners of its lower end. The upper gear box (3), the lower gear box (1) and the transmission shaft (5) are provided with bearing assemblies (7). The transmission shaft (5) and the gear box are smoothly connected through the bearing assemblies (7). The lower gearbox (1) and the upper gearbox (3) form a sound insulation cavity inside and are filled with sound insulation cavity filler (4). The side wall of the upper gearbox (3) is provided with a sound insulation sleeve (8). A lubricating oil syringe (10) is inserted into the sound insulation sleeve (8). A sound insulation clamp (9) is fitted on the lubricating oil syringe (10) and the sound insulation sleeve (8) to achieve sound insulation operation at this location.

2. The low-noise transmission gear structure according to claim 1, characterized in that: The four mounting bases (2) are located at the four corners of the lower gearbox (1). The mounting bases (2) and the lower gearbox (1) are designed as a single unit. The end face of the mounting bases (2) is provided with round holes for mounting the gearbox.

3. The low-noise transmission gear structure according to claim 2, characterized in that: A flange is provided at the connection between the upper gearbox (3) and the lower gearbox (1), and the two flanges are fixed by bolts. A sealing ring is provided at the connection between the upper gearbox (3) and the lower gearbox (1). The sound insulation sleeve (8) is designed as an integral part of the upper gearbox (3), and the inner cavity of the sound insulation sleeve (8) is connected to the sound insulation cavity of the upper gearbox (3). The sound insulation cavity filler (4) is filled in the inner cavity of the sound insulation sleeve (8).

4. The low-noise transmission gear structure according to claim 3, characterized in that: The bearing assembly (7) includes a bearing housing and a bearing. The bearing is mounted on the bearing housing, and the bearing housing is mounted on the upper gearbox (3) and the lower gearbox (1) by bolts. The transmission shaft (5) is located in the gap between the upper gearbox (3) and the lower gearbox (1).

5. The low-noise transmission gear structure according to claim 4, characterized in that: The lubricating oil injector (10) is threaded onto the soundproof sleeve (8). The lubricating oil injector (10) is aligned with the transmission gear set (6) in the upper gearbox (3). The side wall of the lubricating oil injector (10) is provided with a scale (11). The front end of the lubricating oil injector (10) is connected to an injection needle.

6. The low-noise transmission gear structure according to claim 5, characterized in that: The soundproof sleeve (9) has a ring-shaped cross-section and an elastic part in the middle section. The opening of the soundproof sleeve (9) has a protruding strip. The bolt is inserted into the hole on the protruding strip to achieve a tight connection between the soundproof sleeve (9) and the soundproof sleeve (8). The soundproof sleeve (9) is extended to the lubricating oil injector (10).

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