High-protection type photovoltaic rotary speed reducer
By adopting a double-lip skeleton oil seal, oil return groove, and protective cover design in the photovoltaic rotary reducer, combined with a built-in breather valve, the problem of lubricating oil leakage is solved, the reducer achieves stable operation and extended life, reduces maintenance costs, and is suitable for a variety of complex environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG HENGFENGTAI REDUCER MFG
- Filing Date
- 2025-05-23
- Publication Date
- 2026-04-21
AI Technical Summary
Existing photovoltaic rotary reducers are prone to lubricant leakage during use, which affects stability and service life, and increases maintenance costs.
A high-protection photovoltaic rotary reducer was designed, which adopts a double-lip skeleton oil seal and sets an oil return groove and protective cover at the oil seal. Combined with the built-in breather valve, it ensures that the lubricating oil does not accumulate and prevents oil leakage. The PTFE layer reduces the risk of dry friction and shields against ultraviolet rays and contaminants.
It effectively prevents lubricating oil leakage, improves the stability and service life of the reducer, reduces maintenance costs, is suitable for various complex environments, and ensures the efficient operation of photovoltaic power generation systems.
Smart Images
Figure CN224150141U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a photovoltaic speed reducer, and more particularly to a high-protection photovoltaic rotary speed reducer. Background Technology
[0002] In the solar photovoltaic industry, most tracking brackets are driven by a dedicated vertical rotary reducer. The photovoltaic panels are mounted on the output of the rotary reducer, and the rotation of the rotary reducer adjusts the angle of the photovoltaic panels toward the sun to obtain better photoelectric conversion efficiency.
[0003] Currently, when photovoltaic rotary reducers are in use, the internal lubricating oil leaks from the oil seal, causing lubricant loss, affecting the smoothness of rotation, easily causing wear, reducing service life, and increasing equipment maintenance costs. Summary of the Invention
[0004] The technical problem to be solved by this utility model is to provide a high-protection photovoltaic rotary reducer that is compact in structure, easy to process, and can effectively prevent lubricating oil leakage.
[0005] This utility model provides a high-protection photovoltaic rotary reducer, which includes a base with a mounting cavity formed therein. The mounting cavity includes an upper cavity and a lower cavity that are interconnected. Mounting holes are passed through both ends of the upper cavity. A power output component is rotatably mounted between the two mounting holes via a bearing. The side wall of the power output component is provided with a gear ring that can mesh with a worm gear in the lower cavity. Both ends of the power output component extend outside the base and serve as power output ends. An oil seal mounting area is provided between the mounting holes and the power output component. An oil seal is installed in the oil seal mounting area and is located outside the bearing. An oil return groove is opened on the inner side of the oil seal mounting area, which communicates with the lower cavity. The oil return groove is located at the lower end of the oil seal mounting area and can guide the lubricating oil in the oil seal mounting area to the lower cavity.
[0006] Furthermore, the inner wall of the mounting hole is provided with an annular protrusion for mounting the bearing, and the oil return groove is formed on the annular protrusion.
[0007] Furthermore, the oil return groove is located at the lowest point of the oil seal installation area.
[0008] Furthermore, a notch is provided on the inner side of the lower end of the mounting hole to form the oil return groove.
[0009] Furthermore, the inner wall of the mounting hole and the outer wall of the power output component have a first gap to form the oil seal mounting area, which is located on the outside of the bearing.
[0010] Furthermore, the oil seal is a double-lip skeleton oil seal, and a PTFE layer is provided on the sealing lip surface of the oil seal.
[0011] Furthermore, the outer side of the oil seal is provided with an annular protective cover that can cover the oil seal and protect it.
[0012] Furthermore, the lower end of the protective cover is provided with a drainage hole that communicates with the oil seal installation area.
[0013] Furthermore, there is a second gap between the inner wall of the mounting hole and the outer wall of the power output component. The second gap is located outside the oil seal mounting area, and the radial width of the second gap is greater than the radial width of the oil seal mounting area. The protective cover is installed in the second gap.
[0014] Furthermore, the protective cover includes a cylindrical mounting portion that can be embedded in the mounting hole and fixedly installed. The edge of the mounting portion extends radially inward and forms an annular shielding portion that can cover the oil seal. A hole is formed in the lower side wall of the shielding portion, forming a drainage hole.
[0015] Furthermore, the base and / or the side wall of the power output component are provided with a breather valve that communicates with the mounting cavity.
[0016] Furthermore, the breathing valve is disposed on the side wall of the power output component and communicates with the shaft hole on the power output component.
[0017] This utility model relates to a high-protection photovoltaic rotary reducer. An oil return groove is provided inside the oil seal, which guides the lubricating oil from the oil seal to the inside of the reducer, ensuring that lubricant does not accumulate at the oil seal and guaranteeing that the rotary reducer will not leak during its lifespan. This effectively eliminates the risk of oil leakage, improves the stability and reliability of the reducer's operation, and extends its service life. An annular protrusion is provided on the inner wall of the mounting hole, and an oil return groove is set on this annular protrusion, which facilitates bearing assembly and is easy to process, reducing manufacturing costs. A double-lip skeleton oil seal is used, and a PTFE layer is provided on the sealing lip surface of the oil seal, giving the oil seal self-lubricating properties, thereby reducing the risk of dry friction between the seal and metal parts and ensuring the service life of the seal. A protective cover is provided on the outside of the oil seal to prevent the oil seal from being exposed to sunlight, effectively blocking ultraviolet rays and reducing the aging rate of the oil seal. This high-protection photovoltaic rotary reducer features a compact structure, easy processing, and effective protection against oil leakage. It ensures stable and reliable operation of the oil seal, extends its service life, and shields against contaminants. A drainage hole at the lower end of the protective cover connects to the oil seal installation area, preventing water accumulation in the cavity between the cover and the oil seal, thus extending the oil seal's lifespan. The built-in breather valve balances the pressure difference between the inside and outside of the housing, effectively managing condensation, shielding against contamination, and preventing the entry of dust, particles, water, and other foreign matter, extending the breather valve's lifespan. It also protects against ultraviolet radiation, extending the reducer's service life. This high-protection photovoltaic rotary reducer is compact, easy to manufacture, effectively prevents oil leakage, operates stably and reliably, significantly improves equipment lifespan, reduces maintenance costs, and is suitable for various complex environments. Especially under harsh conditions such as high temperature, high humidity, and high dust, it maintains excellent performance, ensuring the efficient operation of the photovoltaic power generation system. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the high-protection photovoltaic rotary reducer of this utility model;
[0019] Figure 2 This is a cross-sectional view of the high-protection photovoltaic rotary reducer of this utility model;
[0020] Figure 3 for Figure 2 Enlarged view of section A in the middle;
[0021] Figure 4 for Figure 2 Enlarged view of section B in the middle;
[0022] Figure 5 for Figure 2 Enlarged view of section C;
[0023] Figure 6 This is a cross-sectional view of the high-protection photovoltaic rotary reducer of this utility model;
[0024] Figure 7 for Figure 6Enlarged view of section D;
[0025] Figure 8 This is a schematic diagram of the end cover structure of the high-protection photovoltaic rotary reducer of this utility model;
[0026] Figure 9 This is a schematic diagram of the protective cover of the high-protection photovoltaic rotary reducer of this utility model.
[0027] In the figure: 1-base body, 1a-second annular protrusion, 10-lower cavity, 101-second oil return groove, 2-power output component, 21-power output end, 22-gear ring, 3-cover, 3a-first annular protrusion, 301-first oil return groove, 4-worm gear, 5-bearing, 6-oil seal, 7-protective cover, 70-drain hole, 71-shielding part, 72-mounting part, 8-breathing valve. Detailed Implementation
[0028] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0029] See Figures 1-9 This utility model provides a high-protection photovoltaic rotary reducer, which includes a base and a power output component 2. An installation cavity is formed within the base, thus the base as a whole forms a hollow shell structure. A fixed base is provided at the bottom of the base for fixing to the ground or a bracket by bolts. The installation cavity includes an upper cavity and a lower cavity 10, with the upper cavity located above the lower cavity 10 and the two communicating with each other. The upper cavity is used to install the power output component 2, and the lower cavity 10 is used to install a worm gear 4. The end of the worm gear 4 is connected to a drive motor, serving as the overall power input end of the rotary reducer.
[0030] Specifically, mounting holes are provided at both ends of the upper cavity. The two mounting holes are coaxial, and their axes are perpendicular to the axis of the worm gear 4. In this embodiment, the axis of the mounting holes is parallel to the horizontal plane. The power output component 2 is cylindrical or cylindrical in shape and is coaxial with the mounting holes. The power output component 2 is rotatably mounted between the two mounting holes through the bearing 5. Preferably, a sliding bearing is used, and the cross-section of the sliding bearing is L-shaped. The two ends of the power output component 2 extend outward to the outside of the base and form a power output end 21. The power output end 21 is a regular polygonal cylindrical structure, and a drive column can be fitted in its center for driving the photovoltaic device.
[0031] A gear ring 22 is provided on the side wall of the power output component 2. The gear ring 22 has gear teeth that can mesh with the worm 4 in the lower cavity. The rotation of the worm 4 drives the rotation of the power output component 2 to achieve driving and deceleration. At the same time, it has a self-locking function to ensure photovoltaic angle adjustment.
[0032] An oil seal mounting area is provided between the mounting hole and the power output component 2. An oil seal 6 is installed in the oil seal mounting area. The oil seal 6 is located on the outside of the bearing 5 and is used to achieve a seal between the inner wall of the mounting hole and the outer wall of the power output component 2. There are two oil seal mounting areas, which are respectively set on two mounting holes to form a seal for the internal mounting cavity. In this application, there is a first gap between the inner wall of the mounting hole and the outer wall of the power output component 2, which forms an oil seal mounting area. The oil seal mounting area is located on the outside of the bearing 5 and is connected to the bearing.
[0033] To improve sealing performance and ensure operational stability, the oil seal 6 in this application is a double-lip skeleton oil seal, which is spring-loaded to provide better sealing ring elasticity. This oil seal 6 effectively prevents dust, dirt, moisture, and other particulate matter from entering the seal, ensuring reliable operation in high-altitude environments, extreme temperatures, and harsh operating conditions. A PTFE layer is provided on the sealing lip surface of the oil seal 6. PTFE, or polytetrafluoroethylene, has excellent corrosion resistance and a low coefficient of friction, significantly improving sealing performance and durability, ensuring long-term stable operation of the reducer. Adding PTFE material to the skeleton oil seal lip gives the oil seal self-lubricating properties, thereby reducing the risk of dry friction between the seal and metal parts and ensuring the service life of the seal.
[0034] In this embodiment, an oil return groove is provided on the inner side of the oil seal installation area, which is connected to the lower cavity 10. The oil return groove is located at the lower end of the oil seal installation area and can guide the lubricating oil in the oil seal installation area to the lower cavity 10, ensuring that the lubricating oil will not accumulate at the oil seal, ensuring that the rotary reducer will not have the risk of oil leakage during its life cycle, and improving the service life and stability of the rotary reducer. In order to achieve a better drainage effect and avoid lubricating oil stagnation at the oil seal, the oil return groove is located at the lowest point of the oil seal installation area, and the oil return groove can be designed to be inclined, which has a good drainage effect.
[0035] In this application, an arc-shaped notch is provided on the inner side of the lower end of the mounting hole, thereby forming an oil return groove; in this application, the base is composed of a base body 1 and a cover 3, and two mounting holes are respectively opened on the base body 1 and the cover 3; the arc-shaped notch structure is adopted to improve the surface smoothness of the oil return groove and avoid dead corners.
[0036] See Figure 2 and Figure 3 A first mounting hole is provided on the cover body 3, and a first annular protrusion 3a is provided on the inner wall of the first mounting hole. The first annular protrusion 3a is used to install the sliding bearing. The oil seal 6 is installed on the outer side of the first annular protrusion 3a. A first recess is provided at the lowest point of the first annular protrusion 3a, and the first recess forms a first oil return groove 301.
[0037] See Figure 2 and Figure 4A second mounting hole is provided on the base body 1, and a second annular protrusion 1a is provided on the inner wall of the second mounting hole. The second annular protrusion 1a is used to install a sliding bearing. The oil seal 6 is installed on the outer side of the second annular protrusion 1a. A second recess is provided at the lowest point of the second annular protrusion 1a, and the second recess forms a second oil return groove 101.
[0038] A protective cover 7 is provided on the outside of the oil seal 6. The protective cover 7 can cover (block) the oil seal 6 to protect it. The protective cover 7 can prevent the oil seal 6 from being exposed to sunlight, effectively block ultraviolet rays, reduce the aging rate of the oil seal, extend its service life, and shield contaminants to ensure reliable and stable use of the oil seal. A drain hole 70 is provided at the lower end of the protective cover 7. The drain hole 70 is connected to the oil seal installation area. It can prevent water from accumulating in the cavity between the protective cover 7 and the oil seal, which helps to extend the life of the oil seal.
[0039] Specifically, a second gap exists between the inner wall of the mounting hole and the outer wall of the power output component 2. This second gap is located outside the oil seal mounting area, and its radial width is greater than the radial width of the oil seal mounting area. The protective cover 7 is installed within this second gap. Figure 9 The protective cover 7 includes a mounting part 72, which is cylindrical and can be inserted into a mounting hole to achieve fixed installation. The edge of the mounting part 72 extends radially inward to form a shielding part 71. The shielding part 71 is located at one end near the oil seal 6 and can cover (block) the oil seal 6 to protect it. A hole is opened on the lower side wall of the shielding part 71 to form a drainage hole 70 for draining water accumulated in the cavity between the protective cover 7 and the oil seal 6.
[0040] In this application, a breather valve 8 is provided on the side wall of the base and / or the power output component 2, and the breather valve 8 is connected to the mounting cavity. In this embodiment, the breather valve 8 is provided on the side wall of the power output component 2, located in the mounting cavity, and connected to the shaft hole on the power output component 2. Through the design of the built-in breather valve 8, the pressure difference between the inside and outside of the housing can be balanced, condensation can be effectively managed, pollution can be shielded, and foreign objects such as dust, particulate matter, and water can be prevented from entering, thus extending the life of the breather valve. At the same time, it can be protected from ultraviolet radiation, thus extending the service life of the reducer.
[0041] This utility model relates to a high-protection photovoltaic rotary reducer. An oil return groove is provided inside the oil seal, which guides the lubricating oil from the oil seal to the inside of the reducer, ensuring that lubricant does not accumulate at the oil seal and guaranteeing that the rotary reducer will not leak during its lifespan. This effectively eliminates the risk of oil leakage, improves the stability and reliability of the reducer's operation, and extends its service life. An annular protrusion is provided on the inner wall of the mounting hole, and an oil return groove is set on this annular protrusion, which facilitates bearing assembly and is easy to process, reducing manufacturing costs. A double-lip skeleton oil seal is used, and a PTFE layer is provided on the sealing lip surface of the oil seal, giving the oil seal self-lubricating properties, thereby reducing the risk of dry friction between the seal and metal parts and ensuring the service life of the seal. A protective cover is provided on the outside of the oil seal to prevent the oil seal from being exposed to sunlight, effectively blocking ultraviolet rays and reducing the aging rate of the oil seal. This high-protection photovoltaic rotary reducer features a compact structure, easy processing, and effective protection against oil leakage. It ensures stable and reliable operation of the oil seal, extends its service life, and shields against contaminants. A drainage hole at the lower end of the protective cover connects to the oil seal installation area, preventing water accumulation in the cavity between the cover and the oil seal, thus extending the oil seal's lifespan. The built-in breather valve balances the pressure difference between the inside and outside of the housing, effectively managing condensation, shielding against contamination, and preventing the entry of dust, particles, water, and other foreign matter, extending the breather valve's lifespan. It also protects against ultraviolet radiation, extending the reducer's service life. This high-protection photovoltaic rotary reducer is compact, easy to manufacture, effectively prevents oil leakage, operates stably and reliably, significantly improves equipment lifespan, reduces maintenance costs, and is suitable for various complex environments. Especially under harsh conditions such as high temperature, high humidity, and high dust, it maintains excellent performance, ensuring the efficient operation of the photovoltaic power generation system.
[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A high-guard photovoltaic rotary reducer, characterized by: The device includes a base with a mounting cavity formed therein. The mounting cavity includes an upper cavity and a lower cavity that are interconnected. Mounting holes are passed through both ends of the upper cavity. A power output component is rotatably mounted between the two mounting holes via a bearing. The side wall of the power output component is provided with a gear ring that can mesh with a worm gear in the lower cavity. Both ends of the power output component extend outside the base and serve as power output ends. An oil seal mounting area is provided between the mounting holes and the power output component. An oil seal is installed in the oil seal mounting area and is located outside the bearing. An oil return groove is opened on the inner side of the oil seal mounting area, which communicates with the lower cavity. The oil return groove is located at the lower end of the oil seal mounting area and can guide the lubricating oil in the oil seal mounting area to the lower cavity.
2. The high-guard photovoltaic rotary decelerator of claim 1, wherein: The inner wall of the mounting hole is provided with an annular protrusion for mounting the bearing, and the oil return groove is formed on the annular protrusion.
3. The high-guard photovoltaic rotary decelerator of claim 1, wherein: The inner wall of the mounting hole and the outer wall of the power output component have a first gap and form the oil seal mounting area, which is located on the outside of the bearing.
4. The high-guard photovoltaic rotary decelerator of claim 1, wherein: The oil seal is a double-lip skeleton oil seal, and a PTFE layer is provided on the sealing lip surface of the oil seal.
5. The high-guard photovoltaic rotary decelerator of claim 1, wherein: The outer side of the oil seal is provided with an annular protective cover that can cover the oil seal and protect it.
6. The high-guard photovoltaic rotary decelerator of claim 5, wherein: The lower end of the protective cover has a drainage hole that communicates with the oil seal installation area.
7. The high-guard photovoltaic rotary decelerator of claim 5, wherein: There is a second gap between the inner wall of the mounting hole and the outer wall of the power output component. The second gap is located outside the oil seal mounting area, and the radial width of the second gap is greater than the radial width of the oil seal mounting area. The protective cover is installed in the second gap.
8. The high-guard photovoltaic rotary decelerator of claim 5, wherein: The protective cover includes a cylindrical mounting part that can be inserted into the mounting hole and fixedly installed. One end of the mounting part extends radially inward to form an annular shielding part that can cover the oil seal. The lower end sidewall of the shielding part has a hole forming a drainage hole.
9. The high-guard photovoltaic rotary decelerator of claim 1, wherein: The base and / or the side wall of the power output component are provided with a breather valve that communicates with the mounting cavity.
10. The high-guard photovoltaic rotary decelerator of claim 9, wherein: The breather valve is disposed on the side wall of the power output component and located in the mounting cavity, and the breather valve is connected to the shaft hole on the power output component.