A lubrication system for a speed reducer

Abstract

The application relates to the technical field of speed reducers, and particularly discloses a speed reducer lubricating system, which comprises a speed reducer, the speed reducer comprises a base with a cavity structure, the upper end of the base is fixedly connected with a machine shell, a worm is connected with the lower part cavity of the base through a bearing, a turbine is connected with the connecting position of the upper end of the base and the machine shell through a bearing, the turbine is engaged with the worm, the lower part cavity of the base is a lubricating oil storage bin, an oil visual channel is arranged at the connecting position of the worm and the base, the bottom of the oil visual channel is connected with the lubricating oil storage bin, a transparent oil visual window is arranged at the top of the oil visual channel, an oil scraping sheet is arranged on the base and in contact with the surface of the turbine, the oil scraping sheet is connected with an oil groove, and the oil groove is connected with a bearing channel which can lead to the turbine bearing. The technical scheme of the application solves the technical problem that the speed reducer is more likely to be damaged due to the increase of small structures in the prior art technical scheme of driving lubricating oil circulation and infiltration of bearings through a micro pump.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, specifically a speed reducer lubrication system. Background Technology

[0002] A worm gear reducer is a speed reduction device based on the meshing principle of a worm and a worm wheel. It utilizes a gear speed converter to reduce the rotational speed of a motor to the desired speed while obtaining a larger torque. Because it employs a 90-degree crossover transmission method between the worm and worm, it achieves a high reduction ratio while also possessing a self-locking function. It is widely used in mechanisms for transmitting power and motion.

[0003] In current worm gear reducers, the lubricating oil is always located at the bottom of the reducer housing. During operation, the worm wheel and worm cannot achieve sufficient lubrication, leading to significant wear and greatly reducing the service life of the worm gear reducer. This lubrication method has serious drawbacks: many bearings do not receive enough lubricating oil, resulting in unstable oil splashing, poor oil scraping and guiding, the risk of insufficient oil during initial startup, uneven lubrication, and frequent inspections and maintenance. These problems affect the normal operation of the equipment and production efficiency.

[0004] To address the problem of lubricating oil remaining at the bottom of the gearbox, preventing adequate lubrication of the worm gear and worm during operation, most existing technologies employ the addition of a micro pump. This micro pump draws lubricating oil from the bottom of the gearbox to the bearings for lubrication. For example, patent application CN202420154594 discloses a self-lubricating worm gear reducer that utilizes a micro pump to solve the problem of lubricating oil remaining at the bottom of the gearbox.

[0005] While the above solution can solve the problem of lubricating oil remaining at the bottom of the reducer housing for extended periods, the addition of a micro pump requires power to operate, necessitating internal wiring within the reducer. Furthermore, the micro pump and its associated piping increase the number of fine components in the reducer, making it more susceptible to damage. Utility Model Content

[0006] The purpose of this utility model is to provide a speed reducer lubrication system to solve the technical problem that the existing technical solution of setting up a micro pump to drive the lubricating oil circulation to wet the bearing, which increases the number of small structures and makes the speed reducer more susceptible to damage.

[0007] To solve the above problems, the technical solution adopted by this utility model is as follows: A speed reducer lubrication system includes a speed reducer, the speed reducer includes a base with a cavity structure, a housing is fixedly connected to the upper end of the base, a worm gear is connected to the lower cavity of the base by a bearing, a turbine is connected to the upper end of the base and the housing by a bearing, the turbine meshes with the worm gear, the lower cavity of the base is a lubricating oil storage chamber, an oil sighting channel is provided at the connection between the worm gear and the base, the bottom of which is connected to the lubricating oil storage chamber, a transparent oil sighting window is provided at the top opening of the oil sighting channel, an oil scraper is provided on the housing that contacts the surface of the turbine, the oil scraper is connected to an oil groove, and the oil groove is connected to a bearing channel that leads to the turbine bearing.

[0008] The beneficial effects of this implementation plan are as follows:

[0009] 1. In the prior art, due to the addition of a micro pump, the pump body needs to be driven by a power source, so wiring is required inside the reducer. Furthermore, the structure of the micro pump and the pipelines associated with the micro pump results in more fine structures in the reducer, making it more susceptible to damage. In contrast, the bearing lubrication method of the turbine in this application involves using lubricating oil to wet the worm bearing and relying on the oil scraper to rotate the turbine and drive the lubricating oil into the oil groove. The oil enters the bearing channel through the oil groove to achieve bearing lubrication.

[0010] Furthermore, the oil scraper is positioned at a height higher than the oil trough and inclined towards one end of the oil trough, while the oil trough is positioned at a height higher than the bearing channel and inclined towards one end of the bearing channel. Utilizing gravity, the oil flows into the turbine bearing, eliminating the need for a separate pump body compared to existing technologies.

[0011] Furthermore, the worm gear has a power input end and a driven end at its two ends, respectively. Both the driven end and the power input end are equipped with bearing sealing structures. The bearing sealing structure at the power input end includes an inner end cap for the worm gear bearing. The machine base has a pre-drilled mounting hole for the worm gear. The inner end cap for the worm gear bearing includes a fitting end that fits against the inner wall of the mounting hole and a cover end that fits against the side surface of the machine base. By sealing the gap between the bearing and the mounting hole using the fitting end, lubricating oil can only flow between the bearing balls, thus providing better lubrication for the bearing.

[0012] Furthermore, the cover end is provided with a pin to fix the inner end cover of the worm gear bearing to the machine base.

[0013] Furthermore, the inner end cover of the worm bearing is provided with a secondary sealing groove, and an elastic sealing ring is provided in the secondary sealing groove. The inner end cover of the worm bearing is connected to an outer end cover of the worm bearing that can be sealed by compressing the elastic sealing ring. This application requires raising the lubricating oil level, and the secondary sealing reduces the risk of oil leakage.

[0014] Furthermore, a transparent oil viewing window is provided at the top opening of the oil viewing channel for easy observation. Attached Figure Description

[0015] Figure 1 This is a front structural diagram of the present invention.

[0016] Figure 2 This is the left view of the present invention.

[0017] Figure 3 This is a top view of the structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the sealing structure at the input end of the worm gear of this utility model. Detailed Implementation

[0019] The following detailed description illustrates the specific implementation method:

[0020] The reference numerals in the accompanying drawings include: vent cover 1, inspection hole cover 2, machine cover 3, machine base 4, positioning nut 5, worm bearing outer end cover 6, worm 7, worm bearing inner end cover 8, mating end 81, cover end 82, adjusting shim 9, turbine bearing front end cover 10, turbine adjusting shim 11, turbine hub 12, turbine rim 13, turbine bearing rear end cover 14, sealing ring 15, turbine shaft 16, sleeve 17, oil sight glass 18, worm bearing 19, oil scraper 20, bearing channel 21, elastic sealing ring 22.

[0021] Implementation, for example, attached Figure 1-4 As shown:

[0022] A speed reducer lubrication system includes a base 4, a housing 3 on the base, an inspection hole on the housing 3, an inspection hole cover 2 on the inspection hole, a vent hole in the center of the inspection hole cover 2, and a vent hole cover 1 on the vent hole for sealing.

[0023] The base 4 and housing 3 are connected as a single unit using bolts and nuts. A turbine is located at the center of the connection between the housing 3 and the base 4. The turbine hub 12 is fitted onto the turbine shaft 16. Both ends of the turbine shaft 16 are rotatably connected to the front wall of the base 4 using turbine bearings to support the turbine's rotation. Figure 3 As shown, after the worm shaft 16 is connected to the base 4, it needs to be sealed. A worm gear adjusting shim 11 and a sealing ring 15 are provided on both the front cover 10 and the rear cover 14 of the worm bearing. Since the worm is located at the center of the connection between the base 4 and the housing 3, part of the worm wheel rim 13 is in the housing 1 and part is in the base 4. The worm 13 in the base 4 will mesh with the worm 7 below.

[0024] Worm Gear 7 Figure 1 As shown, with Figure 1The direction describes the orientation. The worm 7 is located in the cavity of the lower part of the base 4 and is connected to the left and right side walls of the base 4 by worm bearings 19. To ensure accurate and secure installation of the worm 7, sleeves 17 are provided on the inner side walls of the worm bearings 19 at both ends. A positioning nut 5 is provided on the left end of the left sleeve 17. The positioning nut 5 and the sleeve 17 are integrally formed, and the sleeve 17 has an interference fit with the inner wall of the bearing. Threads are provided at corresponding positions on the screw 7, and the positioning nut is used to determine the left and right position of the worm during installation. The worm 7 and the worm wheel are arranged in a cross shape. Both ends of the worm 7 are sealed with bearing sealing structures at the connection points with the worm bearings 19. The structures at the two ends of the worm 7 are not the same; one end needs to extend out of the base 4 to connect to the motor as the power input end, and the other end is the driven end. The bearing sealing structure at the power input end of the worm 7 is as follows: Figure 4 As shown, the system includes an outer end cover 6 and an inner end cover 8 for the worm bearing. The inner end cover 8 includes a mating end 81, a covering end 82, and a secondary sealing groove. During installation, the mating end 81 on the inner end cover 8 is mated with the pre-drilled mounting hole for the worm on the machine base 4. Then, the worm bearing 19 is installed on the inner surface of the mating end 81. The worm bearing 19 and the mounting hole press against the mating end 81 to seal the gap between the worm bearing 19 and the pre-drilled mounting hole on the machine base 4. However, when the mating end of the inner end cover 8 is mated with the pre-drilled hole on the machine base 4, the covering end 82 just covers the left end face of the pre-drilled mounting hole on the machine base 4. The covering end 82 is fixed to the side wall of the machine base 4 with a pin. To ensure that the part of the covering end 82 that is mated with the machine base surface does not leak oil, an adjusting shim 9 is provided between the covering end 82 and the machine base surface for sealing. A secondary sealing groove is provided on the left side surface of the cover end 82. An elastic sealing ring 22 is installed in the secondary sealing groove for sealing. To improve the sealing effect of the elastic sealing ring 22, a worm bearing outer end cover 6 is provided outside the elastic sealing ring 22. The worm bearing outer end cover 6 is also fixed with a pin, but it is fixed to the worm bearing inner end cover 8. The worm bearing inner end cover 8 and the worm bearing outer end cover 6 together seal the elastic sealing ring 22, so that the elastic sealing ring 22 deforms and fills the gap between the worm 7 and the worm bearing inner end cover 8 for sealing. Through layer-by-layer sealing, even when the lubricating oil is raised to the position where the worm bearing 19 is immersed in oil, there will be no oil leakage.

[0025] An oil sighting channel 18 is provided on one side of the worm gear's power input end. The bottom of the oil sighting channel 18 is connected to the inner cavity of the machine base 4, and the bottom height of the oil sighting channel 18 is at the same level as the central axis of the worm bearing 19. The lower part of the machine base 4 is typically used as a lubricating oil reservoir. Therefore, when adding lubricating oil, more oil can be added to the reservoir to raise the oil level to a position sufficient to immerse the worm bearing 19 in oil. Because the oil sighting channel 18 is connected to the bottom of the machine base, they form a communicating vessel, allowing the level of lubricating oil in the machine base to be known by observing the level of lubricating oil in the oil sighting channel 18, ensuring that the lubricating oil level is always sufficient to lubricate the worm. The top opening of the oil sighting channel 18 is sealed with a transparent oil sight window to prevent dust from falling in.

[0026] An oil scraper 20 is provided on the housing 3. One end of the oil scraper 20 is fixed to the housing, and the other end contacts the turbine surface. The oil scraper 20 is inclined towards the housing end when it is set. An oil groove is provided at the connection between the oil scraper 20 and the housing 3. The oil groove is set downward along the surface of the housing 3 towards the turbine bearing. At the end of the oil groove, a bearing channel 21 is connected to the turbine bearing. Since the lubricating oil is immersed in the lubricating oil, when the reducer starts, the worm 7 rotates in the lubricating oil and carries out some lubricating oil. During the meshing process with the turbine, the lubricating oil is transmitted to the turbine. When the turbine rotates, it carries the lubricating oil into the housing 3. When it rotates downward, it contacts the oil scraper 20, so that the lubricating oil is scraped off the turbine and flows into the oil groove along the upper surface of the oil scraper 20. Through the oil groove, it enters the bearing channel 21 to lubricate the turbine bearing.

[0027] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A speed reducer lubrication system, comprising a speed reducer, the speed reducer including a base with a cavity structure, a housing fixedly connected to the upper end of the base, a worm gear connected to the lower cavity of the base by a bearing, and a turbine gear connected to the connection between the upper end of the base and the housing by a bearing, the turbine gear meshing with the worm gear, characterized in that: the lower cavity of the base is a lubricating oil storage chamber, an oil viewing channel with its bottom communicating with the lubricating oil storage chamber is provided at the connection between the worm gear and the base, an oil scraper is provided on the housing that contacts the surface of the turbine gear, the oil scraper is connected to an oil groove, and the oil groove is connected to a bearing channel leading to the turbine gear bearing.

2. The speed reducer lubrication system according to claim 1, characterized in that: The oil scraper is positioned at a height higher than the oil trough and tilted towards one end of the oil trough. The oil trough is positioned at a height higher than the bearing channel and tilted towards one end of the bearing channel.

3. The speed reducer lubrication system according to claim 1, characterized in that: The worm gear has a power input end and a driven end at its two ends, respectively. Both the driven end and the power input end are provided with a bearing sealing structure. The bearing sealing structure of the power input end includes an inner end cover of the worm gear bearing. The machine base has a reserved mounting through hole for the worm gear to be installed. The inner end cover of the worm gear bearing includes a fitting end that fits against the inner wall of the mounting through hole and a cover end that fits against the side surface of the machine base.

4. The speed reducer lubrication system according to claim 3, characterized in that: The cover end is provided with a pin to fix the inner end cover of the worm gear bearing to the machine base.

5. The speed reducer lubrication system according to claim 4, characterized in that: The inner end cover of the worm bearing is provided with a secondary sealing groove, and an elastic sealing ring is provided in the secondary sealing groove. The inner end cover of the worm bearing is connected to an outer end cover of the worm bearing that can be sealed by compressing the elastic sealing ring.

6. The speed reducer lubrication system according to claim 1, characterized in that: The top opening of the oil viewing channel is equipped with a transparent oil viewing window.

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