Planetary gear reducer with lubrication adjustment

Abstract

The utility model relates to mechanical drive technical field, concretely disclose a kind of planetary gear reducer with lubrication adjustment, including planetary gear reducer main body, the top of planetary gear reducer main body is provided with lubricating oil heat dissipation component, lubricating oil heat dissipation component includes oil tank, and the bottom of oil tank is fixedly connected with planetary gear reducer main body, the inner chamber of oil tank is staggered and is provided with two groups of baffle, and the top of baffle is provided with flow guide groove, the bottom of oil tank is provided with liquid inlet regulating valve. Through lubricating oil heat dissipation component, active circulation heat dissipation of lubricating oil is realized, utilize heat dissipation fin and enhance heat exchange efficiency, and combine the structure of baffle and prolong the residence time of lubricating oil in oil tank, to effectively reduce lubricating oil operating temperature, with effectively improve the heat dissipation efficiency of lubricating oil, prevent lubricating oil high-temperature deterioration, reduce gear surface wear and material fatigue, ensure the advantage that speed reducer is stably operated under high load condition.

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, as core components of industrial transmission systems, are widely used in hoisting, excavation, transportation, and construction. Their core function is to reduce motor speed and increase output torque. In servo, stepper, and DC drive systems, planetary gear reducers, with their compact structure, excellent transmission efficiency, wide reduction ratio range, and high operating precision, have become key equipment for achieving precision transmission. However, the lubrication mechanism design of existing gear reducers has significant defects. The current mainstream solution adopts a built-in oil circulation system, which is integrated inside the reducer housing. During the circulation process, the lubricating oil undertakes the dual tasks of gear lubrication and heat conduction. The heat dissipation mechanism relies entirely on the passive heat dissipation of the reducer housing, that is, heat dissipation is achieved through natural heat exchange between the housing surface and the ambient medium. When the reducer is in a state of continuous operation for a long time, gear friction continuously generates a large amount of heat, and the temperature of the lubricating oil rises significantly. Due to the limited passive heat dissipation capacity of the housing, the rate of heat accumulation far exceeds the rate of dissipation, resulting in the lubricating oil not being able to cool down in time. At high temperatures, the lubricating oil not only has decreased viscosity and deteriorated lubrication performance, but it is also prone to problems such as accelerated wear on the gear surface and accelerated material fatigue, which may cause equipment overheating shutdown or permanent damage in severe cases. Existing technologies have failed to effectively solve the core problem of low lubricating oil heat dissipation efficiency, and cannot meet the stable operation requirements of speed reducers under high load conditions.

[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 regulation, which effectively improves the heat dissipation efficiency of lubricating oil, prevents high-temperature deterioration of lubricating oil, reduces gear surface wear and material fatigue, and ensures stable operation of the reducer under high-load conditions.

[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 regulation includes a planetary gear reducer body. A lubricating oil cooling assembly is provided on the top of the planetary gear reducer body. The lubricating oil cooling assembly includes an oil reservoir, and the bottom of the oil reservoir is fixedly connected to the planetary gear reducer body. Two sets of guide plates are alternately arranged in the inner cavity of the oil reservoir, and a guide groove is opened on the top of the guide plates. An inlet regulating valve is provided at the bottom of the oil reservoir, and the bottom of the inlet regulating valve penetrates and extends into the inner cavity of the planetary gear reducer body. The oil reservoir is fitted with heat dissipation fins. A liquid pump is provided on the left side of the oil reservoir. The output end of the liquid pump is connected to a discharge pipe, and the other end of the discharge pipe is connected to the top of the oil reservoir. The input end of the liquid pump is connected to an inlet pipe, and the other end of the inlet pipe is connected to the oil outlet of the planetary gear reducer body.

[0006] Furthermore, this application also proposes that a limiting plate is snapped into the bottom of the liquid pump, and the bottom of the limiting plate is fixed to the main body of the planetary gear reducer.

[0007] Furthermore, this application also proposes that the number of heat dissipation fins is not less than ten, and that the ten heat dissipation fins are equally spaced on the surface of the oil tank.

[0008] Furthermore, this application also proposes that the top of the guide plate has not less than twelve guide grooves, and the twelve guide grooves are equally spaced on the top of the guide plate.

[0009] Furthermore, this application also proposes that one end of the deflector is fixedly connected to the oil reservoir, and the other end of the deflector does not contact the oil reservoir.

[0010] Furthermore, this application also proposes that mounting holes are provided at the four corners of the inner cavity on the right 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 regulation provided in this application realizes active circulation and heat dissipation of lubricating oil through the lubricating oil heat dissipation component, enhances heat exchange efficiency by utilizing heat dissipation fins, and extends the residence time of lubricating oil in the oil tank by combining the guide plate structure, thereby effectively reducing the working temperature of lubricating oil. It has the advantages of effectively improving the heat dissipation efficiency of lubricating oil, preventing high-temperature deterioration of lubricating oil, reducing gear surface wear and material fatigue, and ensuring stable operation of the reducer under high load conditions. 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 2This is a schematic diagram of the structure of the lubricating oil heat dissipation component of this utility model; Figure 3 This is a partial cross-sectional view of the oil storage tank of this utility model; Figure 4 This is a schematic diagram of the guide plate structure of this utility model.

[0013] In the diagram: 1. Planetary gear reducer body; 2. Lubricating oil cooling assembly; 201. Oil tank; 202. Discharge pipe; 203. Liquid pump; 204. Limiting plate; 205. Feed pipe; 206. Heat dissipation fins; 207. Liquid inlet regulating valve; 208. Guide plate; 209. Guide groove; 3. Mounting hole. 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 1-4 This application proposes a planetary gear reducer with lubrication adjustment, including a planetary gear reducer body 1. A lubricating oil cooling assembly 2 is provided on the top of the planetary gear reducer body 1. The lubricating oil cooling assembly 2 includes an oil reservoir 201, and the bottom of the oil reservoir 201 is fixedly connected to the planetary gear reducer body 1. Two sets of guide plates 208 are alternately arranged inside the oil reservoir 201, and a guide groove 209 is formed on the top of the guide plates 208. An inlet is provided at the bottom of the oil reservoir 201. A regulating valve 207 is provided, and the bottom of the liquid inlet regulating valve 207 extends through and into the inner cavity of the planetary gear reducer body 1. A heat dissipation fin 206 is provided on the oil storage tank 201. A liquid pump 203 is provided on the left side of the oil storage tank 201. The output end of the liquid pump 203 is connected to the discharge pipe 202, and the other end of the discharge pipe 202 is connected to the top of the oil storage tank 201. The input end of the liquid pump 203 is connected to the feed pipe 205, and the other end of the feed pipe 205 is connected to the oil outlet of the planetary gear reducer body 1.

[0016] The lubricating oil cooling component 2 can be understood as a device for heat exchange and circulation control of lubricating oil. Its main function is to quickly dissipate heat from the lubricating oil through active circulation. Specifically, the lubricating oil cooling component 2 can extend the oil flow path by setting a multi-layer flow guiding structure or a spiral flow guiding channel inside the oil tank 201, thereby increasing the contact time between the oil and the cooling structure. Furthermore, the two sets of guide plates 208 arranged alternately in the inner cavity of the oil tank 201, and the guide grooves 209 opened on their tops, can adopt an inclined design or a stepped design to guide the oil to flow in a specific direction, avoiding the oil from directly passing through the oil tank 201 and reducing the heat exchange efficiency.

[0017] In practical applications, the inlet regulating valve 207 can be manually adjusted or solenoidally controlled to dynamically adjust the oil flow rate. For example, the valve opening can be controlled by an external signal to change the flow rate of lubricating oil into the planetary gear reducer body 1. As a preferred embodiment, the inlet regulating valve 207 can also be combined with a flow sensor to achieve closed-loop control, ensuring that the lubricating oil flow rate matches the reducer's operating state. Furthermore, the number and shape of the heat dissipation fins 206 can be adjusted according to actual needs, such as using a wave-shaped, fin-shaped, or other geometric design to further improve the heat dissipation surface area and airflow efficiency.

[0018] The hydraulic pump 203 serves as the power source for lubricating oil circulation. It can be a centrifugal pump, gear pump, or plunger pump, among other pump body structures. Its main function is to draw high-temperature lubricating oil from the reducer body 1 and transport it to the oil reservoir 201 for heat dissipation. Furthermore, the input and output ends of the hydraulic pump 203 are connected to the reducer body 1 and the oil reservoir 201 respectively via the inlet pipe 205 and the outlet pipe 202. The connection methods can include flange connections, threaded connections, or clamp connections to meet installation requirements under different operating conditions.

[0019] The innovation of this application lies in constructing an active circulation cooling system, integrating the lubricating oil cooling components into the top of the reducer body, thereby achieving active control and rapid heat dissipation of the lubricating oil temperature. Compared to the passive cooling method relying on the reducer housing in the prior art, this solution extends the oil flow path through the guide plate 208 and guide channel 209 in the oil tank 201, increases the heat dissipation area by combining the heat dissipation fins 206, and uses the liquid pump 203 to achieve forced circulation of the lubricating oil, effectively solving the problem of excessively high lubricating oil temperature that is difficult to dissipate, thus preventing the continuous accumulation of heat in the gear area. The working principle of this embodiment is as follows: A planetary gear reducer with lubrication regulation forms an active circulation cooling system by setting a lubricating oil heat dissipation component 2 on the top of the planetary gear reducer body 1, thereby solving the problem of excessively high lubricating oil temperature that is difficult to dissipate. The core of the lubricating oil heat dissipation component 2 is an oil reservoir 201, the bottom of which is fixedly connected to the planetary gear reducer body 1 to ensure structural stability and form a closed circulation channel. Two sets of guide plates 208 are staggered inside the oil reservoir 201, and guide grooves 209 are opened on the top of the guide plates 208, allowing the oil to form a tortuous flow path along the guide grooves 209 under gravity, extending the residence time of the oil in the oil reservoir, thereby increasing the contact area with the heat dissipation fins 206 and improving heat exchange efficiency.

[0020] Furthermore, an inlet regulating valve 207 is located at the bottom of the oil reservoir 201, extending through and into the inner cavity of the planetary gear reducer body 1. It controls the flow rate of oil into the reducer cavity, dynamically adjusting the lubrication amount and preventing excessive lubrication that could lead to heat buildup. Heat dissipation fins 206 are fitted onto the surface of the oil reservoir 201, increasing the heat dissipation surface area and accelerating heat diffusion into the environment. A pump 203 is located on the left side of the oil reservoir 201, with its output end connected to the discharge pipe 202 to the top of the oil reservoir 201. This pump delivers oil to the upper part of the oil reservoir, ensuring even distribution and flow through the guide plate 208, guaranteeing full contact between the oil and the guide groove 209 and the heat dissipation fins 206, thus enhancing heat dissipation.

[0021] Specifically, the input end of the hydraulic pump 203 is connected to the feed pipe 205, and the other end of the feed pipe 205 is connected to the oil outlet of the planetary gear reducer body 1. This allows for timely extraction of high-temperature oil from inside the reducer for heat dissipation, preventing heat from continuously accumulating in the gear area. Thus, through the synergistic operation of the above technical solutions, the lubricating oil can form an efficient circulation between the oil reservoir 201 and the planetary gear reducer body 1, achieving active control and rapid heat dissipation of the lubricating oil temperature, ultimately solving the problem of excessively high lubricating oil temperature that is difficult to dissipate passively.

[0022] This application further proposes that the bottom of the liquid pump 203 is snapped with a limiting plate 204, and the bottom of the limiting plate 204 is fixedly connected to the planetary gear reducer body 1.

[0023] Specifically, the limiting plate 204 is a structural component used to limit the position of the hydraulic pump 203. It can be made of metal sheet, high-strength plastic, or other materials with rigid support properties. In practical applications, the limiting plate 204 is attached to the bottom of the hydraulic pump 203 by a snap-fit ​​design. This snap-fit ​​design simplifies the installation process and ensures rapid positioning. Its purpose is to prevent the hydraulic pump 203 from shifting due to operational vibration, thereby ensuring the stable operation of the oil circulation system. In addition, the bottom of the limiting plate 204 is fixedly connected to the planetary gear reducer body 1. This fixing method can be achieved through bolt connection, welding, or embedded assembly. Its purpose is to integrate the entire support structure with the reducer body to eliminate vibration transmission paths.

[0024] Specifically, this solution effectively solves the stability problem of the hydraulic pump 203 during operation by introducing a limiting plate 204. The design of the limiting plate 204 engaging at the bottom of the hydraulic pump 203 allows for quick positioning and stable support, preventing pump displacement caused by vibrations from the reducer. Simultaneously, the fixed connection between the bottom of the limiting plate 204 and the planetary gear reducer body 1 directly utilizes the main structure as a support base, avoiding the space occupation and complexity caused by additional supports. This design not only maintains the continuity and efficiency of oil circulation but also provides a fundamental guarantee for the stable operation of the lubricating oil cooling components. Furthermore, the combined effect of the connection between the limiting plate 204, the hydraulic pump 203, and the planetary gear reducer body 1 ensures that the inlet pipe 205 and the outlet pipe 202 remain tightly connected, preventing loosening or oil leakage due to shaking, thereby improving the reliability of the entire lubrication regulation system.

[0025] Through the above technical solution, the liquid pump 203 can maintain high stability during operation, avoiding the problems of loose connection and oil leakage caused by vibration, thereby ensuring the timely removal of heat from the inside of the reducer by the lubricating oil cooling component, and effectively alleviating the problem of excessive lubricating oil temperature.

[0026] This application further proposes that the number of heat dissipation fins 206 is not less than ten, and the ten heat dissipation fins 206 are equally spaced on the surface of the oil tank 201.

[0027] Specifically, the heat dissipation fins 206 are structural components used to increase the heat exchange area and improve heat dissipation efficiency. They can be made of metal sheets, such as aluminum or copper heat sinks, with the aim of accelerating heat dissipation by expanding the heat dissipation surface area. Meanwhile, the equidistant arrangement means that the heat dissipation fins 206 are evenly distributed on the outer surface of the oil tank 201 at fixed intervals. This distribution can be achieved through machining or injection molding, with the aim of preventing heat accumulation in localized areas and ensuring that heat is evenly transferred to the surrounding environment.

[0028] Specifically, the above technical solution significantly improves the reliability of the heat dissipation system by precisely controlling the number and distribution of the heat dissipation fins 206. The design of at least ten heat dissipation fins 206 ensures sufficient coverage of the heat dissipation area, avoiding the problem of limited heat dissipation capacity due to insufficient quantity; while the equidistant arrangement of the fins 206 achieves uniform distribution, preventing the concentrated accumulation of heat in localized areas. Based on this, this design, combined with the structure of the oil reservoir 201, allows the heat of the lubricating oil to be quickly transferred to the heat dissipation fins 206 after being guided by the guide plate 208 and the guide groove 209, and ultimately dissipated into the external environment. Furthermore, this optimized heat dissipation path effectively solves the problem of heat dissipation blind spots caused by insufficient number or uneven distribution of heat dissipation fins, thereby ensuring stable control of the lubricating oil temperature and improving the reliability of gear lubrication within the reducer.

[0029] The above technical solutions not only solve the problem of low heat dissipation efficiency caused by insufficient number or uneven distribution of heat dissipation fins, but also further optimize the heat dissipation path of lubricating oil, ensuring the stability and reliability of the reducer during long-term operation.

[0030] This application further proposes that the top of the guide plate 208 has not less than twelve guide grooves 209, and the twelve guide grooves 209 are equally spaced on the top of the guide plate 208.

[0031] Specifically, the guide groove 209 refers to the groove structure formed on the surface of the guide plate 208 to guide the flow of lubricating oil. It can be achieved by machining, casting, or stamping. In practical applications, the design of no fewer than twelve guide grooves 209 ensures that the lubricating oil forms a dense flow network, which aims to avoid oil accumulation and local overheating, thereby improving heat dissipation efficiency. At the same time, the equidistant distribution ensures that the spacing between the guide grooves 209 remains consistent. This can be achieved through precise machining processes, which aims to eliminate differences in the length of the flow path, prevent oil stagnation or acceleration, and thus ensure the uniformity of heat transfer.

[0032] Specifically, the above technical solution optimizes the flow characteristics of lubricating oil on the guide plate 208 by setting no fewer than twelve guide grooves 209. The number and distribution of the guide grooves 209 work together to ensure that the lubricating oil forms a continuous and uniform flow path on the surface of the guide plate 208. This design not only segments the oil flow but also maximizes the contact area between the lubricating oil and the guide plate 208, thereby improving heat exchange efficiency. In addition, the equidistant distribution of the guide grooves 209 further ensures that the lubricating oil flows through each area of ​​the guide plate 208 at a uniform rate, avoiding the problem of local overheating caused by uneven flow. On this basis, the above technical solution, together with the oil reservoir 201 and the heat dissipation fins 206, forms a highly efficient heat dissipation system, effectively solving the defect of excessively high temperature of lubricating oil due to uneven heat dissipation.

[0033] This application further proposes that one end of the guide plate 208 is fixedly connected to the oil tank 201, and the other end of the guide plate 208 does not contact the oil tank 201.

[0034] Specifically, the guide vane 208 is a structural component used to guide the flow path of lubricating oil and enhance heat dissipation. It can be made of materials with high thermal conductivity, such as metal sheets or composite material sheets. The design of one end of the guide vane 208 being fixedly connected to the oil reservoir 201 ensures the initial positioning stability of the guide vane during lubricating oil circulation, avoiding displacement caused by liquid flow impact or vibration. The design of the other end not contacting the oil reservoir 201 provides the guide vane with the buffer space required for thermal expansion. When the lubricating oil temperature rises, the guide vane can freely expand and contract along the non-contact end, thereby effectively avoiding internal stress accumulation and preventing structural deformation or damage.

[0035] In detail, this solution addresses the issue of internal stress caused by thermal expansion of the guide plate when the lubricating oil temperature continuously rises through a coordinated design where one end of the guide plate is fixedly connected and the other end is non-contact. The fixed connection of one end of the guide plate 208 to the oil reservoir 201 not only ensures the geometric consistency of the guide channel 209 but also maintains the stability of the oil flow path. The design of the other end not contacting the oil reservoir 201 provides the guide plate with freedom for thermal expansion, preventing structural deformation or misalignment of the guide channel caused by thermal stress. This design not only ensures the integrity of the guide channel 209, allowing the lubricating oil to flow continuously and evenly through it, extending the heat dissipation path, but also improves the long-term reliability of the heat dissipation components under fluctuating temperature conditions, ultimately optimizing the heat dissipation efficiency of the lubricating oil. Furthermore, the above design, together with the oil reservoir 201 and the guide channel 209, further enhances the heat dissipation effect of the lubricating oil, ensuring that the heat from the gears inside the reducer can be quickly dissipated.

[0036] This application further proposes that mounting holes 3 are provided at the four corners of the inner cavity on the right side of the planetary gear reducer body 1, and the four mounting holes 3 are of the same size.

[0037] Specifically, mounting hole 3 refers to the through-hole structure used to fix the reducer body, which can be achieved by machining methods such as drilling or stamping. The consistent size of mounting holes 3 is based on the requirements of standardized assembly, aiming to ensure uniform stress distribution at each connection point, avoid local stress concentration caused by differences in hole diameter, thereby improving installation reliability and vibration resistance during operation.

[0038] In detail, this solution achieves a balanced force distribution at multiple points during installation by setting mounting holes 3 at the four corners of the inner cavity on the right side of the planetary gear reducer body 1. This design, based on the requirement of symmetrical installation positions, ensures the uniformity of the spatial distribution of mounting points, effectively preventing tilting or displacement of the main body caused by concentrated force on one side during the fixing process, thus maintaining the rigidity of the overall structure. Simultaneously, the four mounting holes 3 adopt a uniform diameter design, facilitating quick installation using universal fasteners and simplifying the assembly process. This optimized design not only improves the stability of the reducer body during operation but also provides a fundamental guarantee for the efficient operation of the lubricating oil cooling components, helping the cooling fins 206 and guide plates 208 to fully function and ensuring effective control of the lubricating oil temperature. Furthermore, the uniform distribution of the mounting holes 3 forms a good fit with the lubricating oil cooling components 2, further enhancing the overall performance of the reducer.

[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: The top of the planetary gear reducer body (1) is provided with a lubricating oil cooling assembly (2). The lubricating oil cooling assembly (2) includes an oil tank (201), and the bottom of the oil tank (201) is fixedly connected to the planetary gear reducer body (1). Two sets of guide plates (208) are staggered in the inner cavity of the oil tank (201), and a guide groove (209) is opened on the top of the guide plate (208). The bottom of the oil tank (201) is provided with an inlet regulating valve (207), and the bottom of the inlet regulating valve (207) penetrates through... The oil tank (201) is fitted with heat dissipation fins (206) and extends into the inner cavity of the planetary gear reducer body (1). A liquid pump (203) is provided on the left side of the oil tank (201). The output end of the liquid pump (203) is connected to the discharge pipe (202), and the other end of the discharge pipe (202) is connected to the top of the oil tank (201). The input end of the liquid pump (203) is connected to the feed pipe (205), and the other end of the feed pipe (205) is connected to the oil outlet of the planetary gear reducer body (1).

2. The planetary gear reducer with lubrication adjustment according to claim 1, characterized in that: The bottom of the liquid pump (203) is engaged with a limiting plate (204), and the bottom of the limiting plate (204) is fixed to the planetary gear reducer body (1).

3. A planetary gear reducer with lubrication adjustment according to claim 1, characterized in that: The number of heat dissipation fins (206) is not less than ten, and the ten heat dissipation fins (206) are equally spaced on the surface of the oil tank (201).

4. A planetary gear reducer with lubrication adjustment according to claim 1, characterized in that: The top of the guide plate (208) has no less than twelve guide grooves (209), and the twelve guide grooves (209) are equally spaced on the top of the guide plate (208).

5. A planetary gear reducer with lubrication adjustment according to claim 1, characterized in that: One end of the guide plate (208) is fixedly connected to the oil tank (201), and the other end of the guide plate (208) does not contact the oil tank (201).

6. A planetary gear reducer with lubrication adjustment according to claim 1, characterized in that: Mounting holes (3) are provided at the four corners of the inner cavity on the right side of the planetary gear reducer body (1), and the four mounting holes (3) are the same size.

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