Photovoltaic rotary speed reducer transmission mechanism
By installing protective components in the transmission mechanism of the photovoltaic rotary reducer, the problem of easy corrosion of bolts and nuts was solved, thus achieving stable operation and extended service life of the transmission mechanism.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 无锡天昀新能源科技有限公司
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-10
AI Technical Summary
The connecting bolts and nuts of the existing photovoltaic rotary reducer transmission mechanism lack protective structures and are prone to corrosion when exposed to the external environment for a long time, which affects stable operation.
A protective assembly is installed at the connection between the bolt and nut, including a cover and a lubricant. The cover encloses the bolt and nut, and the lubricant provides lubricating oil inside, isolates it from external corrosion, and lubricates the threaded surface.
It effectively prevents bolts and nuts from rusting, reduces friction and wear, ensures stable operation of the transmission mechanism, and extends its service life.
Smart Images

Figure CN224479262U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of transmission mechanism technology, specifically relating to a photovoltaic rotary reducer transmission mechanism. Background Technology
[0002] Photovoltaic modules need to adjust their angle according to the direction of the sun. The transmission system for adjusting photovoltaic modules requires a speed reducer as the core transmission component. The speed reducer outputs torque through the transmission mechanism. The transmission mechanism usually consists of multiple components, commonly including gear transmission parts, input shaft, output shaft, and housing.
[0003] In current photovoltaic rotary reducer transmission mechanism installation practices, bolts and nuts are commonly used to secure the transmission mechanism to the mounting surface. Specifically, installers use specialized tools to precisely pass the bolts through pre-set mounting holes on the transmission mechanism and the mounting surface, then screw on the nuts and gradually tighten them to ensure the transmission mechanism is firmly fixed to the mounting surface, guaranteeing the stability of subsequent operation.
[0004] However, this installation method has a significant problem. Since the bolts and nuts are directly exposed to the external environment, they are inevitably subject to corrosion from various factors. Outdoors, they are constantly exposed to wind, sun, and rain. Moisture, oxygen, and various corrosive substances in the air, such as the acidic components in acid rain, gradually react chemically with the metal surfaces of the bolts and nuts, leading to rust. Over time, this corrosion intensifies, not only affecting the appearance of the bolts and nuts but also weakening their mechanical properties and reducing the tightening effect. This ultimately poses a potential threat to the safe and stable operation of the transmission mechanism and even the entire photovoltaic system. Utility Model Content
[0005] The purpose of this utility model is to provide a photovoltaic rotary reducer transmission mechanism to solve the problem mentioned in the background art that the connecting bolts and nuts on the existing transmission mechanism do not have a protective structure, which affects the stable operation of the transmission mechanism during long-term use.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a photovoltaic rotary reducer transmission mechanism, comprising a housing; bolts passing through both sides of the bottom of the housing, and nuts screwed onto the top of the bolts, the bottom end of which abuts against the housing; the housing is securely installed via the nuts, wherein the bottom end of the bolts should be fixed or screwed onto the placement surface of the housing; a protective component is also provided on the top of the bolts, the protective component comprising: a cover, which wraps around the connection between the bolt and the nut; the cover separates the bolt and nut from the outside world, preventing subsequent corrosion; and a lubricant, placed inside the cover, which, under external pressure, flows lubricating oil to the bolt and nut, thereby lubricating both, while without external force, the lubricating oil will not lubricate the bolt and nut.
[0007] Preferably, the cover is a protective sleeve with a hemispherical top and a limiting protrusion at the bottom opening. The limiting protrusion engages with the outer wall of the nut to prevent the protective sleeve from rotating, facilitates alignment, and reduces or even prevents lubricating oil from flowing out of the nut during subsequent lubrication, thereby improving the utilization efficiency of the lubricating oil.
[0008] Preferably, the protective sleeve is further provided with a silicone sheet inside, which divides the inside of the protective sleeve into two areas. Lubricating oil is injected into the upper half of the protective sleeve and the silicone sheet. A cross groove is opened in the middle of the silicone sheet. In use, the cross groove at the silicone sheet is opened by the pressure of the lubricating component towards the silicone sheet, and then the lubricating oil flows into the bottom of the protective sleeve through the cross groove to achieve lubrication of the bolts and nuts.
[0009] Preferably, the top of the protective sleeve is also provided with a through hole, and the lubricating component includes a plug that passes through the through hole. A limiting ring is formed at the bottom of the plug. The limiting ring is inclined upward from the center to the surrounding area. The limiting ring can realize the limiting connection between the protective sleeve and the plug, and prevent the two from separating. At the same time, the entire plug and the limiting ring are made of plastic. Therefore, during the connection, the deformation of the limiting ring can pass through the through hole and be inserted into the protective sleeve, while being limited inside the protective sleeve.
[0010] Preferably, a spring is also fitted on the outer surface of the plunger, with the two ends of the spring abutting against the protective sleeve and the plunger respectively. The spring's rebound force lifts the plunger upward, thereby preventing the bottom end of the plunger from pushing open the cross groove when lubrication is not required.
[0011] Preferably, a connecting plate is fixed to the side of the housing, and the connecting plate is connected to the flange end of the geared motor.
[0012] Preferably, the front and rear surfaces of the housing are provided with an output shaft, and a flat keyway is provided on the inner side of the end of the output shaft. The output shaft is connected to the geared motor through a worm gear inside the housing. Since this structure is existing technology, it will not be described in detail here.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] In this utility model, the added protective components can fit tightly to the installation part of the transmission mechanism, completely enclosing the bolts and nuts, effectively isolating them from the external environment, preventing the bolts and nuts from directly contacting moisture, oxygen and various corrosive substances in the air, and reducing the risk of corrosion.
[0015] In addition, the protective components are equipped with space and channels for adding lubricating oil. After the protective components are installed, an appropriate amount of lubricating oil can be injected into the interior through the corresponding channels. The lubricating oil will evenly cover the threaded surfaces of the bolts and nuts, forming a protective film that reduces friction and wear between metal parts. It can also isolate external adverse factors to a certain extent, slow down the aging rate of the bolts and nuts, thereby ensuring the normal operation of the transmission mechanism and extending its service life. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a cross-sectional view of the connection between the protective component of this utility model and the bolts and nuts;
[0018] Figure 3 This is a top view of the protective sleeve of this utility model;
[0019] Figure 4 This is a bottom view of the protective cover of this utility model.
[0020] In the picture:
[0021] 100. Housing; 101. Connecting plate; 102. Output shaft; 103. Bolt; 104. Nut;
[0022] 200. Protective sleeve; 201. Plug; 202. Limiting protrusion; 203. Cross groove; 204. Spring; 205. Limiting ring; 206. Silicone sheet; 207. Through hole. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1 to 4 This utility model provides a technical solution: a photovoltaic rotary reducer transmission mechanism, comprising...
[0025] Box 100;
[0026] Bolts 103 are threaded through the bottom sides of the box 100, and nuts 104 are screwed onto the top of the bolts 103. The bottom end of the nut 104 is pressed against the box 100. The box 100 is securely installed by the nuts 104, and the bottom end of the bolts 103 should be fixed or screwed onto the placement surface of the box 100.
[0027] A protective component is also provided on the top of bolt 103, which includes:
[0028] The cover is wrapped around the connection between the bolt 103 and the nut 104; the cover can separate the bolt 103 and the nut 104 from the outside world and prevent them from being corroded by the outside world.
[0029] The lubricant is placed inside the cover and, under external pressure, the lubricant flows to the bolt 103 and nut 104, thereby lubricating both of them. Without external force, the lubricant will not lubricate the bolt 103 and nut 104.
[0030] In this embodiment, preferably, the cover is a protective sleeve 200. The top of the protective sleeve 200 is a hemispherical structure, and the bottom opening of the protective sleeve 200 forms a limiting protrusion 202. The limiting protrusion 202 is engaged with the outer wall of the nut 104 to prevent the protective sleeve 200 from rotating. It also facilitates alignment and can reduce or even prevent lubricating oil from flowing out of the nut 104 during subsequent lubrication, thereby improving the utilization efficiency of lubricating oil.
[0031] In this embodiment, preferably, a silicone sheet 206 is also provided inside the protective sleeve 200. The silicone sheet 206 divides the inside of the protective sleeve 200 into two regions. Lubricating oil is injected into the upper region of the protective sleeve 200 and the silicone sheet 206. A cross groove 203 is provided in the middle of the silicone sheet 206. In use, the lubricating element is pressed towards the silicone sheet 206, so that the cross groove 203 at the silicone sheet 206 is squeezed open. Then, the lubricating oil flows through the cross groove 203 to the bottom of the protective sleeve 200 to achieve lubrication of the bolt 103 and the nut 104.
[0032] In this embodiment, preferably, the top of the protective sleeve 200 is also provided with a through hole 207. The lubricating component includes a plug 201 that passes through the through hole 207. A limiting ring 205 is formed at the bottom of the plug 201. The limiting ring 205 is inclined upward from the center to the surrounding area. The limiting ring 205 can realize the limiting connection between the protective sleeve 200 and the plug 201, and prevent the two from separating. At the same time, the entire plug 201 and the limiting ring 205 are made of plastic. Therefore, during the connection, the deformation of the limiting ring 205 can pass through the through hole 207 and be inserted into the protective sleeve 200, while being limited inside the protective sleeve 200.
[0033] In this embodiment, preferably, a spring 204 is also sleeved on the outer surface of the plug 201. The two ends of the spring 204 abut against the protective sleeve 200 and the plug 201 respectively. The spring 204 rebounds and lifts the plug 201 upward, thereby preventing the bottom end of the plug 201 from pushing open the cross groove 203 when no lubrication is required.
[0034] In this embodiment, preferably, a connecting plate 101 is fixedly provided on the side of the housing 100, and the connecting plate 101 is connected to the flange end of the geared motor.
[0035] In this embodiment, preferably, an output shaft 102 is provided on the front and rear surfaces of the housing 100. A flat keyway is provided on the inner side of the end of the output shaft 102. The output shaft 102 is connected to the geared motor through a worm gear inside the housing 100. Since this structure is existing technology, it will not be described in detail here.
[0036] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A photovoltaic rotary reducer transmission mechanism, comprising: Box (100); Bolts (103) are threaded through the bottom sides of the box (100), and nuts (104) are screwed onto the top of the bolts (103). The bottom end face of the nut (104) abuts against the box (100). Its features are: A protective assembly is also provided on the top of the bolt (103), the protective assembly comprising: The cover is wrapped around the connection between the bolt (103) and the nut (104); A lubricant is placed inside the cover and, under external pressure, the lubricant flows lubricating oil to the bolt (103) and nut (104).
2. The photovoltaic rotary reducer transmission mechanism according to claim 1, characterized in that: The cover is a protective sleeve (200). The top of the protective sleeve (200) is a hemispherical structure. The bottom opening of the protective sleeve (200) forms a limiting protrusion (202), which engages with the outer wall of the nut (104).
3. The photovoltaic rotary reducer transmission mechanism according to claim 2, characterized in that: The protective sleeve (200) is also provided with a silicone sheet (206) inside, which divides the inside of the protective sleeve (200) into two areas. Lubricating oil is injected into the upper half of the protective sleeve (200) and the silicone sheet (206). A cross groove (203) is provided in the middle of the silicone sheet (206).
4. The photovoltaic rotary reducer transmission mechanism according to claim 3, characterized in that: The top of the protective sleeve (200) is also provided with a through hole (207), and the lubricant includes a plug (201) that passes through the through hole (207). A limiting ring (205) is formed at the bottom of the plug (201), and the limiting ring (205) is inclined upward from the center to the surrounding area.
5. The photovoltaic rotary reducer transmission mechanism according to claim 4, characterized in that: A spring (204) is also fitted on the outer surface of the plunger (201), and the two ends of the spring (204) abut against the protective sleeve (200) and the plunger (201) respectively.
6. The photovoltaic rotary reducer transmission mechanism according to claim 1, characterized in that: A connecting plate (101) is fixedly provided on the side of the housing (100), and the connecting plate (101) is connected to the flange end of the geared motor.
7. The photovoltaic rotary reducer transmission mechanism according to claim 6, characterized in that: The front and rear surfaces of the housing (100) are provided with an output shaft (102), and a flat keyway is provided on the inner side of the end of the output shaft (102).