Planetary gear reducer with lubrication adjustment

Abstract

This utility model relates to the field of mechanical transmission technology, specifically disclosing a planetary gear reducer with lubrication adjustment. It includes a planetary gear reducer body, a lubrication assembly on the top of the body, a filter box (the bottom of which is fixedly connected to the reducer body), an oil pump on the left side of the filter box (the input end of which extends through the filter box into the inner cavity of the filter box), and an adjustable nozzle at the output end of the pump (the other end of which extends through the reducer body into the inner cavity of the reducer body). Through the filter box, filter screen, and adjustable nozzle in the lubrication assembly, the lubricating oil is circulated, filtered, and precisely lubricated, effectively intercepting harmful impurities such as sludge and colloids, preventing them from entering the gear meshing area. This provides advantages such as effectively filtering impurities in the lubricating oil, reducing gear wear, preventing oil circuit blockage, and extending equipment service life.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, specifically to a planetary gear reducer with lubrication adjustment. Background Technology

[0002] Planetary gear reducers, with their compact structure, large transmission ratio, and high load-bearing capacity, are widely used in high-end manufacturing and energy fields such as industrial robots, precision machine tools, and wind power equipment. The lubrication system, as a core component ensuring the long-term stable operation of the reducer, plays a decisive role in reducing gear wear, lowering operating noise, and extending equipment life. However, current lubrication components on the market generally suffer from functional defects, particularly the lack of effective filtration mechanisms. In actual operation, lubricating oil undergoes oxidation due to prolonged exposure to high temperatures and high loads, gradually generating harmful impurities such as sludge and gum. Because existing lubrication systems cannot effectively intercept and remove these impurities, contaminants circulate into the planetary gear reducer with the lubricating oil. These impurities accumulate in the gear meshing area, not only exacerbating tooth surface wear and pitting but also potentially clogging oil passages, leading to lubrication failure and ultimately causing equipment performance degradation or even serious damage. Furthermore, maintenance personnel often fail to detect internal contamination in a timely manner, allowing problems to worsen undetected, increasing the risk of equipment failure and maintenance difficulty.

[0003] To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a planetary gear reducer with lubrication adjustment, which has the advantages of effectively filtering impurities in lubricating oil, reducing gear wear, preventing oil circuit blockage, and extending equipment service life.

[0005] This application provides a planetary gear reducer with lubrication adjustment, the technical solution of which is as follows: A planetary gear reducer with lubrication adjustment includes a planetary gear reducer body. A lubrication assembly is provided on the top of the planetary gear reducer body. The lubrication assembly includes a filter box, and the bottom of the filter box is fixedly connected to the planetary gear reducer body. An oil pump is provided on the left side of the filter box. The input end of the oil pump passes through and extends into the inner cavity of the filter box. An adjustable oil nozzle is provided at the output end of the oil pump. The other end of the adjustable oil nozzle passes through and extends into the inner cavity of the planetary gear reducer body. Protrusions are provided at both ends of the inner cavity of the filter box. The tops of the two protrusions... The filter box is equipped with a filter screen, and a sealing plate is installed on the top of the filter box. Movable cylinders are provided on both sides of the bottom of the sealing plate. A limit plate is movably installed in the inner cavity of the movable cylinder. A return spring is installed at the connection between the top of the limit plate and the movable cylinder. A push rod is installed at the bottom of the limit plate. The bottom of the push rod passes through and extends to the bottom of the movable cylinder. A pressure plate is fixedly connected to the bottom of the two push rods, and the bottom of the pressure plate contacts the filter screen. Fixing bolts are provided at the four corners of the inner cavity of the sealing plate. Threaded holes that match the fixing bolts are opened at the four corners of the top of the inner cavity of the filter box.

[0006] Furthermore, this application also proposes that the top of the sealing plate is provided with a feed inlet, and the top of the feed inlet is threadedly connected with a sealing cap.

[0007] Furthermore, this application also proposes that the surface of the sealing cap is provided with anti-slip threads, and the number of anti-slip threads is not less than twenty.

[0008] Furthermore, this application also proposes that the two ends of the filter box cavity are fixedly connected to the protrusions by welding, and the two protrusions are arranged symmetrically about the filter box.

[0009] Furthermore, this application also proposes that the length of the pressure plate is consistent with the width of the filter screen, and that the bottom of the pressure plate is provided with anti-slip particles.

[0010] Furthermore, this application also proposes that mounting holes are provided at the four corners of the left side of the planetary gear reducer body, and the four mounting holes are of the same size.

[0011] As can be seen from the above, the planetary gear reducer with lubrication adjustment provided in this application realizes the circulation filtration and precise lubrication of lubricating oil through the filter box, filter screen and adjustable oil nozzle in the lubrication assembly, effectively intercepting harmful impurities such as sludge and colloids, and preventing them from entering the gear meshing area. It has the advantages of effectively filtering impurities in lubricating oil, reducing gear wear, preventing oil circuit blockage and extending the service life of equipment. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the lubrication component structure of this utility model; Figure 3 This is a partial cross-sectional view of the filter box of this utility model; Figure 4 This is a bottom view of the sealing plate structure of this utility model; Figure 5 This is a partial cross-sectional view of the movable cylinder of this utility model.

[0013] In the diagram: 1. Planetary gear reducer body; 2. Mounting hole; 3. Lubrication assembly; 301. Filter box; 302. Feed inlet; 303. Sealing cover; 304. Sealing plate; 305. Fixing bolt; 306. Oil pump; 307. Adjustable oil injector; 308. Protrusion; 309. Filter screen; 3010. Threaded hole; 3011. Movable cylinder; 3012. Pressure plate; 3013. Return spring; 3014. Limit plate; 3015. Push rod. Detailed Implementation

[0014] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0015] Please see Figure 1-5This application proposes a planetary gear reducer with lubrication adjustment, including a planetary gear reducer body 1. A lubrication assembly 3 is provided on the top of the planetary gear reducer body 1. The lubrication assembly 3 includes a filter box 301, and the bottom of the filter box 301 is fixedly connected to the planetary gear reducer body 1. An oil pump 306 is provided on the left side of the filter box 301. The input end of the oil pump 306 penetrates and extends into the inner cavity of the filter box 301. An adjustable oil injector 307 is provided at the output end of the oil pump 306. The other end of the adjustable oil injector 307 penetrates and extends into the inner cavity of the planetary gear reducer body 1. Both ends of the inner cavity of the filter box 301 are provided with protrusions 308, and filter screens 309 are provided on the top of the two protrusions 308. A sealing plate 304 is provided at the top of the filter box 301. Movable cylinders 3011 are provided on both sides of the bottom of the sealing plate 304. A limiting plate 3014 is movably installed in the inner cavity of the movable cylinder 3011. A return spring 3013 is provided at the connection between the top of the limiting plate 3014 and the movable cylinder 3011. A push rod 3015 is provided at the bottom of the limiting plate 3014. The bottom of the push rod 3015 passes through and extends to the bottom of the movable cylinder 3011. A pressure plate 3012 is fixedly connected to the bottom of the two push rods 3015, and the bottom of the pressure plate 3012 contacts the filter screen 309. Fixing bolts 305 are provided at the four corners of the inner cavity of the sealing plate 304. Threaded holes 3010 that are compatible with the fixing bolts 305 are opened at the four corners of the top of the inner cavity of the filter box 301.

[0016] In practical applications, the lubrication component 3 can be understood as a device for filtering and transporting lubricating oil, which can be achieved in various ways. For example, the lubrication component 3 can adopt a separate design with independent filtration and oil supply units, connected by pipelines to achieve oil transport and filtration; or it can adopt an integrated design, integrating the filtration unit and oil supply unit into one housing to reduce the use of external pipelines. Furthermore, the filter box 301, as the core filtration unit, can be designed with a multi-layer filtration structure as needed, such as a combination of primary filter screen 309 and fine filter screen 309 to improve the filtration effect. Specifically, the filter screen 309 can be made of metal wire mesh, fiber filter media, or other materials with filtration functions, and its main function is to intercept impurities in the lubricating oil and prevent them from entering the planetary gear reducer body 1.

[0017] Furthermore, the adjustable injector 307 is designed to allow for adjustment of the oil quantity according to actual operating conditions, which can be achieved through either manual or automatic adjustment. For example, manual adjustment can be achieved by changing the injector opening using a knob or handle; automatic adjustment can be achieved by a sensor detecting the equipment's operating status and the control system driving the actuator to adjust the injector opening. As a preferred embodiment, the adjustment range of the adjustable injector 307 can be set according to the specific lubrication requirements of the equipment to ensure that the lubricating oil is accurately delivered to critical friction points.

[0018] Furthermore, the pressure plate 3012 is designed to fix the filter screen 309 and apply appropriate pressure, which can be achieved through elastic clamping, mechanical locking, or other forms of fixing. For example, elastic clamping can provide continuous pressure through springs or other elastic elements; mechanical locking can be achieved through structures such as bolts or clips. Specifically, the bottom of the pressure plate 3012 can be provided with an anti-slip structure or a material that increases the coefficient of friction to enhance the contact stability between it and the filter screen 309.

[0019] The innovation of this application lies in integrating a lubrication component 3 on the top of the planetary gear reducer body 1, achieving effective filtration and precise adjustment of the lubricating oil. This solves the problem of ineffective filtration of sludge and gum deposits generated by oxidation of the lubricating oil during long-term use. Specifically, this technical solution forms a complete lubrication adjustment system by setting up a filter box 301, an adjustable oil injector 307, and a pressure plate 3012, thereby avoiding the risk of sludge and gum deposits entering the planetary gear reducer and causing equipment damage. Therefore, this application not only improves the reliability of the lubrication system but also extends the service life of the planetary gear reducer.

[0020] The working principle of this embodiment is as follows: A planetary gear reducer with lubrication adjustment function achieves filtration and precise adjustment of lubricating oil by setting a lubrication assembly 3 on the top of the main body. The filter box 301 in the lubrication assembly 3 serves as the core unit, with its bottom fixedly connected to the planetary gear reducer main body 1 to ensure overall structural stability and reduce vibration interference. Protrusions 308 are provided at both ends of the inner cavity of the filter box 301, and filter screens 309 are mounted on the top of the two protrusions 308 to intercept sludge and colloids in the lubricating oil, preventing impurities from entering the reducer and causing damage. Furthermore, a sealing plate 304 is provided on the top of the filter box 301. The sealing plate 304 is fastened to the threaded holes 3010 on the top of the inner cavity of the filter box 301 by fixing bolts 305 at the four corners, thereby maintaining the system's airtightness.

[0021] The flow of lubricating oil is driven by oil pump 306. The input end of oil pump 306 extends through and into the inner cavity of filter box 301, directly drawing oil purified by filter screen 309 to prevent unfiltered impurities from entering the system. The output end of oil pump 306 is connected to adjustable oil injector 307, the other end of which extends through and into the inner cavity of planetary gear reducer body 1. This injector can dynamically adjust the oil volume according to actual working conditions, achieving precise lubrication of key friction parts. Thus, the lubricating oil, after filtration, is efficiently delivered to the reducer, effectively extending the equipment's service life.

[0022] In addition, movable cylinders 3011 are provided on both sides of the bottom of the sealing plate 304. A limiting plate 3014 is movably installed inside the movable cylinder 3011. The top of the limiting plate 3014 is connected to the movable cylinder 3011 via a return spring 3013, allowing the limiting plate 3014 to move up and down within the movable cylinder 3011. A push rod 3015 is provided at the bottom of the limiting plate 3014. The bottom of the push rod 3015 passes through and extends to the outside of the movable cylinder 3011, and is fixedly connected to the pressure plate 3012. The bottom of the pressure plate 3012 contacts the filter screen 309. Under the action of the return spring 3013, the pressure plate 3012 can firmly fix the filter screen 309, preventing it from shifting during operation. When it is necessary to replace the filter screen 309, the pressure plate 3012 can be manually lifted for convenient operation. Specifically, this design not only ensures the stability of the filter screen 309 but also improves the convenience of maintenance.

[0023] In summary, this technical solution achieves effective filtration and precise adjustment of lubricating oil through the coordinated operation of various components. It solves the problem of ineffective filtration of sludge and gum produced by oxidation during long-term use of lubricating oil, thereby avoiding the risk of impurities entering the planetary gear reducer and causing equipment damage.

[0024] This application further proposes that the top of the sealing plate 304 is provided with a feed inlet 302, and the top of the feed inlet 302 is threadedly connected with a sealing cap 303.

[0025] Specifically, the inlet 302 refers to a through-hole structure opened on the top of the sealing plate 304. It can be circular, square, or other suitable shapes, and its purpose is to provide a convenient channel for adding lubricating oil while avoiding the operational complexity caused by completely disassembling the sealing plate 304. The sealing cover 303 is a sealing component that matches the inlet 302. It achieves a repeatable opening and closing function through a threaded connection, and its purpose is to ensure the sealing performance of the lubrication system and prevent the intrusion of external impurities.

[0026] In detail, this technical solution allows lubricating oil to be directly injected into the inner cavity of the filter box 301 by setting an inlet 302 on the top of the sealing plate 304, without disassembling the sealing plate 304. This simplifies the maintenance process and reduces the risk of external contaminants entering. A sealing cap 303 is threadedly connected to the top of the inlet 302. This design not only facilitates quick opening and tightening but also enhances the connection's strength, making it suitable for frequent maintenance scenarios. The threaded connection of the sealing cap 303, in conjunction with the inlet 302, ensures the stability of leak-proof performance during operation, conforms to operating habits, and improves overall maintenance efficiency. Furthermore, the reasonable positioning of the inlet 302 avoids disturbance to the filter screen 309 structure, further ensuring the reliability of the lubrication system.

[0027] In summary, the above technical solutions effectively solve the problems of cumbersome operation and easy introduction of external impurities during the lubricant addition process, and significantly improve the sealing reliability and maintenance efficiency of the lubrication system.

[0028] This application further proposes that the surface of the sealing cap 303 is provided with anti-slip threads, and the number of anti-slip threads is not less than twenty.

[0029] Specifically, the anti-slip threads refer to the continuous raised texture structure formed on the surface of the sealing cap 303, which can be implemented in various forms such as straight lines, diagonal lines, or cross lines. The purpose of the anti-slip threads is to significantly increase the frictional resistance when in contact with fingers or tools, thereby effectively suppressing slippage during rotation. In addition, the limited number of anti-slip threads is based on considerations of the uniformity of operating force distribution, ensuring that a sufficiently dense number of friction points are covered in the circumference of the sealing cap 303 to avoid slippage caused by smooth areas or uneven force distribution.

[0030] In detail, the sealing cap 303, with its surface-mounted anti-slip threads, provides a continuous and reliable grip during actual use, making installation and disassembly smoother and less prone to slipping. The dense arrangement of the anti-slip threads not only improves operational stability but also ensures the sealing integrity of the feed inlet 302. Simultaneously, this design complements the overall structure of the feed inlet 302 and the sealing cap 303, further optimizing maintenance efficiency and sealing reliability. Through this technical solution, the operational inconvenience caused by the smooth surface of the sealing cap 303 is resolved, providing more efficient technical support for the lubrication adjustment of the planetary gear reducer.

[0031] This application further proposes that the two ends of the inner cavity of the filter box 301 are fixedly connected to the protrusions 308 by welding, and the two protrusions 308 are arranged in a centrally symmetrical manner about the filter box 301.

[0032] Specifically, the protrusion 308 refers to the structural component used to support the filter screen 309. It can be made by stamping or casting metal sheets, aiming to provide a stable supporting foundation for the filter screen 309. Welded fixed connection refers to the formation of a permanent high-strength joint using the fusion bonding properties of metals. This can be achieved through processes such as manual arc welding, gas shielded welding, or laser welding, ensuring that the connection point between the protrusion 308 and the inner cavity of the filter box 301 remains stable at all times. Centrally symmetrical arrangement means that the two protrusions 308 are mirror images of each other with respect to the geometric center of the filter box 301. This can be achieved with the assistance of precision positioning fixtures during installation, aiming to ensure even stress distribution and avoid tilting caused by unilateral loads.

[0033] In detail, the above technical solution replaces the conventional detachable connection method with a welded fixed connection. Utilizing the properties of metal fusion, a permanent high-strength joint is formed, effectively avoiding the risk of loosening at the connection point under the vibration environment of the planetary gear reducer, thus providing a continuous and reliable support foundation for the filter screen 309. Simultaneously, the symmetrical design of the two protrusions 308 about the center of the filter box 301 results in a more uniform stress distribution. Under the impact of oil flow during the operation of the oil pump 306 or the inertia of equipment start-up and shutdown, the filter screen 309 can maintain a horizontal posture, preventing displacement caused by localized stress concentration. Furthermore, the protrusions 308 at both ends of the inner cavity of the filter box 301, together with the welded fixed connection and the symmetrical layout, ensure that the filter screen 309 maintains a stable position during long-term use, effectively intercepting sludge and gum impurities in the lubricating oil and improving the long-term reliability of the lubrication system.

[0034] This application further proposes that the length of the pressure plate 3012 is the same as the width of the filter screen 309, and that the bottom of the pressure plate 3012 is provided with anti-slip particles.

[0035] Specifically, the pressure plate 3012 is a structural component used to fix and press the filter screen 309. It can be made of metal sheet, high-strength plastic, or other materials with sufficient rigidity. The length of the pressure plate 3012 is consistent with the width of the filter screen 309, ensuring that the pressure plate 3012 can completely cover the entire width range of the filter screen 309, thereby achieving uniform distribution when pressure is applied and avoiding deformation or displacement of the filter screen 309 edges due to insufficient local force. Anti-slip particles are structures that improve friction performance by increasing the roughness of the contact surface. They can be applied to the bottom of the pressure plate 3012 by spraying, bonding, or integral molding. Their purpose is to enhance the friction between the pressure plate 3012 and the filter screen 309, preventing the filter screen 309 from sliding under vibration and oil flow impact.

[0036] In detail, this technical solution effectively improves the fixing stability of the filter screen 309 by precisely matching the dimensional relationship between the pressure plate 3012 and the filter screen 309 and introducing a surface anti-slip design. The length of the pressure plate 3012 matches the width of the filter screen 309, ensuring that the pressure plate 3012 can completely cover the entire width range of the filter screen 309, thereby achieving uniform pressure distribution and preventing the filter screen 309 from warping or shifting due to insufficient local force. Simultaneously, the anti-slip particles at the bottom of the pressure plate 3012 significantly enhance the friction between it and the filter screen 309 by increasing the roughness of the contact surface, effectively suppressing the relative sliding tendency caused by mechanical vibration and lubricating oil flow during the operation of the planetary gear reducer. Furthermore, the design of the pressure plate 3012, together with the protrusions 308 and the movable cylinder 3011 within the filter box 301, further enhances the overall fixing effect of the filter screen 309, ensuring that sludge and colloids are reliably intercepted and preventing impurities from intruding into the core components of the reducer and causing damage.

[0037] This application further proposes that mounting holes 2 are provided at the four corners of the left side of the planetary gear reducer body 1, and the four mounting holes 2 are of the same size. Specifically, mounting holes 2 refer to the hole structures for fixing the equipment, located at the four corners on the left side of the planetary gear reducer body 1. These holes can be created using methods such as mechanical drilling, laser cutting, or stamping. The purpose is to ensure positioning accuracy and fixing reliability during installation through standardized design, while avoiding vibration and stress concentration problems caused by uneven distribution or dimensional differences in mounting points. Furthermore, the consistent size of mounting holes 2 simplifies the selection and installation of fasteners, thereby improving overall installation efficiency and quality.

[0038] In detail, this technical solution utilizes geometric symmetry to evenly distribute the installation force by symmetrically arranging mounting holes 2 at the four corners of the left side of the planetary gear reducer body 1, effectively avoiding localized stress concentration and vibration. This design is particularly suitable for the installation needs of high-precision industrial equipment, such as industrial robots or precision machine tools, significantly improving the stability and accuracy of equipment operation. Furthermore, since the four mounting holes 2 are of identical size, fasteners of the same specification can be selected for connection in practical applications. This not only simplifies the installation process but also reduces installation errors caused by inconsistent fastener specifications, thereby enhancing the stability and repeatability of the connection points. In addition, this design, combined with the overall structure of the planetary gear reducer body 1, further enhances the long-term reliability of the equipment, providing strong support for applications in high-load, high-precision scenarios.

[0039] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A planetary gear reducer with lubrication adjustment, comprising a planetary gear reducer body (1), characterized in that: A lubrication assembly (3) is provided on the top of the planetary gear reducer body (1). The lubrication assembly (3) includes a filter box (301), and the bottom of the filter box (301) is fixedly connected to the planetary gear reducer body (1). An oil pump (306) is provided on the left side of the filter box (301). The input end of the oil pump (306) extends through and into the inner cavity of the filter box (301). An adjustable oil nozzle (307) is provided at the output end of the oil pump (306). The other end of the adjustable oil nozzle (307) extends through and into the inner cavity of the planetary gear reducer body (1). Both ends of the inner cavity of the filter box (301) are provided with protrusions (308). A filter screen (309) is provided on the top of the two protrusions (308). A sealing plate (304) is provided on the top of the filter box (301). Movable cylinders (3011) are provided on both sides of the bottom of the plate (304). A limiting plate (3014) is movably installed in the inner cavity of the movable cylinder (3011). A return spring (3013) is provided at the connection between the top of the limiting plate (3014) and the movable cylinder (3011). A push rod (3015) is provided at the bottom of the limiting plate (3014). The bottom of the push rod (3015) passes through and extends to the bottom of the movable cylinder (3011). A pressure plate (3012) is fixedly connected to the bottom of the two push rods (3015), and the bottom of the pressure plate (3012) contacts the filter screen (309). Fixing bolts (305) are provided at the four corners of the inner cavity of the sealing plate (304). Threaded holes (3010) that are compatible with the fixing bolts (305) are opened at the four corners of the top of the inner cavity of the filter box (301).

2. The planetary gear reducer with lubrication adjustment according to claim 1, characterized in that: The top of the sealing plate (304) is provided with a feed inlet (302), and the top of the feed inlet (302) is threadedly connected with a sealing cap (303).

3. A planetary gear reducer with lubrication adjustment according to claim 2, characterized in that: The surface of the sealing cap (303) is provided with anti-slip threads, and the number of anti-slip threads is not less than twenty.

4. A planetary gear reducer with lubrication adjustment according to claim 1, characterized in that: Both ends of the inner cavity of the filter box (301) are fixedly connected to the protrusions (308) by welding, and the two protrusions (308) are arranged symmetrically about the filter box (301).

5. A planetary gear reducer with lubrication adjustment according to claim 1, characterized in that: The length of the pressure plate (3012) is the same as the width of the filter screen (309), and the bottom of the pressure plate (3012) is provided with anti-slip particles.

6. A planetary gear reducer with lubrication adjustment according to claim 1, characterized in that: Mounting holes (2) are provided at the four corners of the left side of the planetary gear reducer body (1), and the four mounting holes (2) are the same size.

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