Active sun automatic tracking system

Abstract

The utility model relates to the technical field of sun tracking systems, in particular to an active automatic sun tracking system, which comprises a base, a solar panel, a solar panel and a solar panel, the tracking device comprises a first gear box, a second gear box, a pitching adjusting assembly, a side inclination adjusting assembly, a first execution assembly and a second execution assembly, and the pitching adjusting assembly comprises a first electric control driving mechanism, a first switching mechanism and a first manual driving mechanism; the roll adjusting assembly comprises a second electric control driving mechanism, a second switching mechanism and a second manual driving mechanism. According to the utility model, the pitching angle and the side inclination angle of the substrate can be adjusted in two modes of electric control adjustment and manual adjustment; during electric control adjustment, the angle of the fine adjustment substrate can be manually adjusted so as to adapt to specific environmental conditions or optimize the solar energy receiving efficiency; by introducing a manual adjustment function, the whole system can continue to operate in a manual adjustment mode when electric control adjustment fails.

Description

Technical Field

[0001] The utility model relates to the technical field of sun tracking systems, in particular to an active automatic sun tracking system. Background Art

[0002] As global energy demand continues to grow, solar energy, as a clean, renewable energy resource, has become a key technology for resolving the energy crisis and mitigating environmental change. To maximize solar energy conversion, solar energy conversion devices (such as photovoltaic panels and solar collectors) must be positioned perpendicular to the sun's direction. Therefore, they must track the sun's position during use.

[0003] Most existing solar tracking devices use electronic control to automatically adjust their position according to the set solar trajectory. However, they have the following obvious disadvantages when used: in some areas, the angle of sunlight changes is relatively stable, or the climate conditions change less, so all-weather automatic tracking is possible. However, in some areas, the solar radiation intensity and lighting conditions vary greatly, and the automatic adjustment cannot receive the maximum amount of sunlight, affecting the conversion efficiency. In addition, during normal use, when problems such as sensor failure, low system battery power or abnormality of the electronic control system occur, the automatic adjustment function of the electronic control may fail, which will also affect the conversion efficiency. Utility Model Content

[0004] The purpose of the present invention is to provide an active automatic sun tracking system to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An active sun tracking system comprising:

[0007] a base, wherein a substrate is provided on the base;

[0008] A tracking device, the tracking device comprising a gear box 1, a gear box 2, a pitch adjustment assembly, a roll adjustment assembly, an actuator 1, and an actuator 2, wherein the gear box 1 and the gear box 2 are respectively arranged on both sides of the base, the pitch adjustment assembly is arranged on the gear box 1, and the pitch adjustment assembly is used to drive the actuator 1 to adjust the pitch angle of the base plate, and the roll adjustment assembly is arranged on the gear box 2, and the roll adjustment assembly is used to drive the actuator 2 to adjust the roll angle of the base plate;

[0009] The pitch adjustment assembly includes an electrically controlled drive mechanism 1, a switching mechanism 1, and a manual drive mechanism 1. The pitch adjustment assembly can be driven by the electrically controlled drive mechanism 1 or a pair of the manual drive mechanisms. The switching mechanism 1 is used to switch the driving mode between the electrically controlled drive mechanism 1 and the manual drive mechanism 1.

[0010] The roll adjustment component includes an electronically controlled drive mechanism 2, a switching mechanism 2 and a manual drive mechanism 2. The roll adjustment component can also be driven by the electronically controlled drive mechanism 2 or the manual drive mechanism 2. The switching mechanism 2 is used to switch the driving mode between the electronically controlled drive mechanism 2 and the manual drive mechanism 2.

[0011] Preferably, the substrate is a parabolic structure, and the substrate is connected to a hollow shaft.

[0012] Preferably, the actuator assembly 1 includes an upper sleeve, a screw nut, a screw and a retaining ring nut 1, the upper sleeve is connected to one side of the hollow shaft, the screw nut is connected to the upper sleeve, the screw nut is sleeved on the screw, the screw is connected to the retaining ring nut 1, and the retaining ring nut 1 is arranged on the gear box 1.

[0013] Preferably, the second actuator assembly includes a rotating shaft block and a second retaining ring nut, the two ends of the rotating shaft block are respectively connected to the hollow shaft and the second retaining ring nut, and the second retaining ring nut is arranged on the second gear box.

[0014] Preferably, the electronically controlled drive mechanism 1 is arranged in the gear box 1, and the electronically controlled drive mechanism 2 is arranged in the gear box 2. The electronically controlled drive mechanism 1 and the drive mechanism 2 both include a stepper motor, a reducer and a drive gear. The stepper motor is connected to the reducer, and the stepper motor is connected to the drive gear through the reducer and is used to drive the drive gear to rotate.

[0015] Preferably, the switching mechanism includes a shift lever, a shift fork, a spline sleeve, a spline shaft and an output gear, the spline shaft is connected to the retaining ring nut, the spline sleeve is slidably connected to the spline shaft, the shift lever is rotationally connected to the gear box and is used to drive the shift fork to slide along the gear box, the spline sleeve is provided inside the shift fork, and when the shift lever drives the shift fork to slide along the gear box, it is used to drive the spline sleeve to slide along the spline shaft, and the output gear is provided on the spline sleeve.

[0016] Preferably, the manual drive mechanism includes a handwheel 1, a bevel gear 1, a bevel gear 2, an auxiliary shaft 1, a transmission gear 1, a travel switch 1 and a limit block 1, the handwheel 1 is arranged on one side of the gear box 1, the handwheel 1 is connected to the bevel gear 1, the bevel gear 1 and the bevel gear 2 are meshed with each other, the auxiliary shaft 1 is arranged on the gear box 1, the bevel gear 2 and the transmission gear 1 are both connected to the auxiliary shaft 1, when the handwheel 1 drives the bevel gear 1 to rotate, the transmission of the bevel gear 2 is used to drive the transmission gear 1 to rotate, and the output gear 1 is driven by the shift lever 1 to move in the gear box 1 to make the output gear 1 cooperate with the transmission gear 1 or the driving gear arranged in the gear box 1, a travel switch 1 is provided inside the gear box 1, the spline shaft 1 is connected to the limit block 1, and the position of the limit block 1 is limited by turning on the travel switch 1.

[0017] Preferably, the second switching mechanism includes a second shift lever, a second shift fork, a second spline sleeve, a second spline shaft and a worm gear. The second spline shaft is connected to the second retaining ring nut, the second spline sleeve is slidably connected to the second spline shaft, the second shift lever is rotationally connected to the second gear box and is used to drive the second shift fork to slide along the second gear box, the second spline sleeve is provided inside the second shift fork, and when the second shift lever drives the second shift fork to slide along the second gear box, it is used to drive the second spline sleeve to slide along the second spline shaft, and the worm gear is provided on the second spline sleeve.

[0018] Preferably, the second manual drive mechanism includes a second handwheel, a worm, a second transmission gear, a second travel switch and a second limit block. The second handwheel is slidingly connected to the second gear box, the worm is connected to the second handwheel, the second transmission gear is connected to the worm, a second travel switch is provided inside the second gear box, and the second spline shaft is connected to the second limit block. By turning on the second travel switch, the position of the second limit block is limited.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention can adjust the pitch angle and roll angle of the substrate by both electric control and manual adjustment to adapt to different application scenarios and needs; when performing electric control adjustment, the angle of the substrate can also be manually adjusted and fine-tuned to adapt to specific environmental conditions or optimize solar energy receiving efficiency; by introducing the manual adjustment function, the entire system can continue to operate through manual adjustment when the electric control adjustment fails, avoiding the reduction in solar energy conversion efficiency due to system failure, and is very practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0021] Figure 2 for Figure 1 Schematic diagram of the partial enlarged structure of area A in the middle;

[0022] Figure 3 This is a schematic diagram of the internal structure of the gearbox II of this utility model Figure 1 ;

[0023] Figure 4 This is a schematic diagram of the internal structure of the gearbox II of this utility model Figure 2 (Omit worm gear and worm);

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0025] Figure 6 for Figure 2 Schematic diagram of the partial enlarged structure of area B in the middle;

[0026] Figure 7 This is a schematic diagram of the internal structure of a gearbox of the present invention.

[0027] In the figure: 1 base, 2 base plate, 3 hollow shaft, 4 gear box 1, 5 gear box 2, 6 upper sleeve, 7 lead screw nut, 8 lead screw, 9 retaining ring nut 1, 10 rotating shaft block, 11 retaining ring nut 2, 12 stepping motor, 13 reducer, 14 driving gear, 15 gear lever 1, 16 shift fork 1, 17 spline sleeve 1, 18 spline shaft 1, 19 output gear 1, 20 handwheel 1, 21 bevel gear 1, 22 bevel gear 2, 23 auxiliary shaft 1, 24 transmission gear 1, 25 travel switch 1, 26 limit block 1, 27 gear lever 2, 28 shift fork 2, 29 spline sleeve 2, 30 spline shaft 2, 31 worm gear, 32 handwheel 2, 33 worm, 34 transmission gear 2, 35 travel switch 2, 36 limit block 2. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-7 , the utility model provides a technical solution:

[0030] An active sun tracking system, as shown in the attached manual Figure 1 As shown, including:

[0031] Base 1, base 1 is used to install the tracking device and substrate 2. A substrate 2 is provided on the base 1. In this embodiment, substrate 2 is used to install a mirror aluminum heat collecting plate. The mirror aluminum heat collecting plate has high reflectivity and can more effectively absorb and convert solar energy, thereby improving heat collection efficiency. In this embodiment, substrate 2 is a parabolic structure. Compared with a flat-plate structure, the parabolic shape can effectively focus more sunlight and has better focusing efficiency. A hollow shaft 3 is fixedly connected to substrate 2.

[0032] Tracking device, the tracking device includes gearbox 1 4, gearbox 2 5, a pitch adjustment assembly, a roll adjustment assembly, an actuator 1 and an actuator 2. Gearbox 1 4 and gearbox 2 5 are respectively rotatably connected to both sides of the base 1. The pitch adjustment assembly is provided on gearbox 1 4. The pitch adjustment assembly is used to drive the actuator 1 to adjust the pitch angle of the base 2. The roll adjustment assembly is provided on gearbox 2 5. The roll adjustment assembly is used to drive the actuator 2 to adjust the roll angle of the base 2.

[0033] The pitch adjustment assembly includes an electric drive mechanism 1, a switching mechanism 1, and a manual drive mechanism 1. The pitch adjustment assembly can be driven by the electric drive mechanism 1 or a pair of manual drive mechanisms. The switching mechanism 1 is used to switch the driving mode between the electric drive mechanism 1 and the manual drive mechanism 1.

[0034] The roll adjustment component includes an electronically controlled drive mechanism 2, a switching mechanism 2 and a manual drive mechanism 2. The roll adjustment component can also be driven by the electronically controlled drive mechanism 2 or the manual drive mechanism 2. The switching mechanism 2 is used to switch the driving mode between the electronically controlled drive mechanism 2 and the manual drive mechanism 2.

[0035] The actuator assembly 1 includes an upper sleeve 6, a screw nut 7, a screw 8 and a retaining ring nut 9. The upper sleeve 6 is rotatably connected to one side of the hollow shaft 3. Therefore, when the roll adjustment assembly drives the base plate 2 to rotate, the upper sleeve 6 will not interfere with the movement. The screw nut 7 is rotatably connected to the upper sleeve 6. The screw nut 7 is sleeved on the screw 8 and the screw nut 7 and the lead screw cooperate with each other. One end of the screw 8 is fixedly connected to the retaining ring nut 9. Therefore, when the retaining ring nut 9 rotates, it will drive the screw 8 to rotate. The retaining ring nut 9 is rotatably connected to the gear box 4 through a bearing.

[0036] The second actuator assembly includes a rotating shaft block 10 and a second retaining ring nut 11. The two ends of the rotating shaft block 10 are fixedly connected to the hollow shaft 3 and the second retaining ring nut 11 respectively. The second retaining ring nut 11 is rotatably connected to the second gear box 5 through a bearing.

[0037] The electronically controlled drive mechanism 1 is arranged in the gear box 1 4, and the electronically controlled drive mechanism 2 is arranged in the gear box 2 5. The electronically controlled drive mechanism 1 and the drive mechanism 2 both include a stepper motor 12, a reducer 13 and a drive gear 14. The stepper motor 12 is connected to the reducer 13. The stepper motor 12 is connected to the drive gear 14 through the reducer 13 and is used to drive the drive gear 14 to rotate.

[0038] The switching mechanism includes a shift lever 15, a shift fork 16, a spline sleeve 17, a spline shaft 18 and an output gear 19. The spline shaft 18 is fixedly connected to the retaining ring nut 9, and the spline sleeve 17 is slidably connected to the spline shaft 18. The spline shaft 18 and the spline sleeve 17 can only slide relative to each other. Therefore, when the transmission gear 24 (or the driving gear 14 provided in the gear box 4) drives the output gear 19 to rotate, the spline sleeve 17 will be driven to rotate and then the spline shaft 18 will be driven to rotate. The shift lever 15 is rotatably connected to the gear box 4, and one side of the shift fork 16 It is slidably connected to a limit groove 1 of a gear box 4 (the limit groove 1 is used to limit the shift fork 16 to move only along the axial direction of the lead screw 8). Therefore, when the shift lever 15 is shifted, the shift fork 16 will be driven to slide along the gear box 4. A spline sleeve 17 is provided inside the shift fork 16. When the shift fork 16 moves, the spline sleeve 17 will be driven to move synchronously along the spline shaft 18. When the shift lever 15 drives the shift fork 16 to slide along the gear box 4, it is used to drive the spline sleeve 17 to slide along the spline shaft 18. The output gear 19 is fixedly connected to the spline sleeve 17.

[0039] The manual drive mechanism includes a handwheel 20, a bevel gear 21, a bevel gear 22, an auxiliary shaft 23, a transmission gear 24, a travel switch 25 and a limit block 26. The handwheel 20 is rotatably connected to one side of the gear box 4. In this embodiment, the handwheel 20 is provided with a brake handle and a brake block, and the brake handle is rotated to limit or release the movement of the handwheel 20. One end of the handwheel 20 is fixedly connected to the bevel gear 21, and the bevel gear 21 and the bevel gear 22 are meshed with each other. The auxiliary shaft 23 is rotatably connected to the gear box 4, and the bevel gear 22 and the transmission gear 24 are both fixedly connected to the auxiliary shaft 23. When the handwheel 20 drives the bevel gear 21 to rotate, the transmission of the bevel gear 22 is used to drive the transmission gear 24 to rotate, and the shift fork 16 is driven to move by the shift lever 15, thereby driving The movable spline sleeve 17 moves and drives the output gear 19 to move in the gear box 4, so as to match the output gear 19 with the transmission gear 24 or the drive gear 14 provided in the gear box 4. When the output gear 19 is matched with the transmission gear 24, the pitch adjustment assembly is in a manual drive mode. When the output gear 19 and the drive gear 14 provided in the gear box 4 (the drive gear 14 belongs to an electronically controlled drive mechanism) are engaged with each other, the pitch adjustment assembly is in an electronically controlled drive mode. A travel switch 25 is provided inside the gear box 4. The travel switch 25 is used to cooperate with the limit block 26 to limit the movement of the spline shaft so as to limit the pitch angle of the substrate 2. The spline shaft 18 is fixedly connected to the limit block 26, and the position of the limit block 26 is limited by turning on the travel switch 25.

[0040] The switching mechanism 2 includes a shift lever 27, a shift fork 28, a spline sleeve 29, a spline shaft 20 and a worm gear 31. The spline shaft 20 is fixedly connected to the retaining ring nut 211, and the spline sleeve 29 is slidably connected to the spline shaft 20. The shift lever 27 is rotationally connected to the gear box 25 and is used to drive the shift fork 28 to slide along the gear box 25. One side of the shift fork 28 is slidably connected to the limit groove 2 in the gear box 25 (the limit groove 2 is used to limit the shift fork 28 so that it can only move along the axial direction of the hollow shaft 3). A spline sleeve 29 is provided inside the shift fork 28. When the shift lever 27 drives the shift fork 28 to slide along the gear box 25, it is used to drive the spline sleeve 29 to slide along the spline shaft 20. The worm gear 31 is fixedly connected to the spline sleeve 29.

[0041] Manual drive mechanism 2 includes handwheel 2 32, worm 33, transmission gear 2 34, travel switch 2 35 and limit block 2 36. As shown in the figure of the specification, handwheel 2 32 is slidably connected to gearbox 2 5, so the position of handwheel 2 32 can be adjusted. Worm 33 is fixedly connected to one side of handwheel 2 32. Worm 33 is a single-stage ordinary cylindrical worm 33. Worm 33 is arranged above worm wheel 31 and can realize reverse self-locking. Transmission gear 2 34 is fixedly connected to worm 33. Travel switch 2 35 is arranged inside gearbox 2 5. Spline shaft 2 30 is connected to limit block 2 36. By turning on travel switch 2 35, the position of limit block 2 36 is limited.

[0042] Working principle: Regarding the pitch angle adjustment, when performing electronic control adjustment, by pulling the gear lever 15, the gear lever 15 will drive the shift fork 16 to move, thereby driving the spline sleeve 17 to move along the spline shaft 18, thereby making the output gear 19 and the drive gear 14 of the electronic control drive mechanism 1 engage with each other, and the stepper motor 12 of the electronic control drive mechanism 1 drives the drive gear 14 to rotate, thereby driving the output gear 19 to rotate, thereby adjusting the pitch angle of the base plate 2 by controlling the stepper motor 12; when manual adjustment is required, pulling the gear lever 15, the gear lever 15 will drive the shift fork 16 to move, thereby driving the spline sleeve 17 along the spline shaft When the output gear 19 is rotated, the spline sleeve 17 is driven to rotate, thereby driving the spline shaft 18 to rotate. The transmission gear 18 is driven to rotate by the spline sleeve 17, thereby driving the spline shaft 18 to rotate. The screw 8 is driven to rotate by the retaining ring nut 19, thereby driving the screw nut 7 to move along the screw 8 to adjust the pitch angle of the base plate 2.

[0043] Regarding the adjustment of the roll angle, when performing electronic control adjustment, the handwheel 2 32 is pulled to make the transmission gear 2 34 and the driving gear 14 of the electronic control drive mechanism 2 mesh with each other, and then the gear lever 2 27 is pulled to make the worm wheel 31 and the worm 33 cooperate with each other. At this time, the stepper motor 12 of the electronic control drive mechanism 2 is started, and the stepper motor 12 will drive the output gear 2 to rotate, thereby driving the transmission gear 2 34 to rotate, and then driving the rotating shaft block 10 to rotate through the cooperation between the worm wheel 31 and the worm 33. When the rotating shaft block 10 rotates, it will synchronously drive the hollow shaft 3 to rotate to adjust the roll angle of the substrate 2; when manual adjustment is needed, the handwheel 2 32 is pulled to make the transmission gear 2 34 and the driving gear 14 of the electronic control drive mechanism 2 disengage, and then the gear lever 2 27 is pulled to make the worm wheel 31 and the worm 33 cooperate with each other. At this time, turning to the handwheel 2 32 can achieve the adjustment of the roll angle of the substrate 2.

[0044] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An active sun tracking system, characterized in that: include: a base, wherein a substrate is provided on the base; A tracking device, the tracking device comprising a gear box 1, a gear box 2, a pitch adjustment assembly, a roll adjustment assembly, an actuator 1, and an actuator 2, wherein the gear box 1 and the gear box 2 are respectively arranged on both sides of the base, the pitch adjustment assembly is arranged on the gear box 1, and the pitch adjustment assembly is used to drive the actuator 1 to adjust the pitch angle of the base plate, and the roll adjustment assembly is arranged on the gear box 2, and the roll adjustment assembly is used to drive the actuator 2 to adjust the roll angle of the base plate; The pitch adjustment assembly includes an electrically controlled drive mechanism 1, a switching mechanism 1, and a manual drive mechanism 1. The pitch adjustment assembly can be driven by the electrically controlled drive mechanism 1 or a pair of the manual drive mechanisms. The switching mechanism 1 is used to switch the driving mode between the electrically controlled drive mechanism 1 and the manual drive mechanism 1. The roll adjustment component includes an electronically controlled drive mechanism 2, a switching mechanism 2 and a manual drive mechanism 2. The roll adjustment component can also be driven by the electronically controlled drive mechanism 2 or the manual drive mechanism 2. The switching mechanism 2 is used to switch the driving mode between the electronically controlled drive mechanism 2 and the manual drive mechanism 2.

2. The active sun tracking system according to claim 1, characterized in that: The substrate is a parabolic structure, and the substrate is connected to a hollow shaft.

3. The active sun tracking system according to claim 2, characterized in that: The actuator assembly 1 includes an upper sleeve, a screw nut, a screw and a retaining ring nut 1, the upper sleeve is connected to one side of the hollow shaft, the screw nut is connected to the upper sleeve, the screw nut is sleeved on the screw, the screw is connected to the retaining ring nut 1, and the retaining ring nut 1 is arranged on the gear box 1.

4. The active sun tracking system according to claim 2, characterized in that: The second actuator assembly includes a rotating shaft block and a second retaining ring nut. The two ends of the rotating shaft block are respectively connected to the hollow shaft and the second retaining ring nut. The second retaining ring nut is arranged on the second gear box.

5. The active sun tracking system according to claim 3, characterized in that: The electronically controlled drive mechanism 1 is arranged in the gear box 1, and the electronically controlled drive mechanism 2 is arranged in the gear box 2. The electronically controlled drive mechanism 1 and the drive mechanism 2 both include a stepper motor, a reducer and a drive gear. The stepper motor is connected to the reducer, and the stepper motor is connected to the drive gear through the reducer and is used to drive the drive gear to rotate.

6. The active sun tracking system according to claim 5, characterized in that: The switching mechanism includes a shift lever, a shift fork, a spline sleeve, a spline shaft and an output gear. The spline shaft is connected to the retaining ring nut, the spline sleeve is slidably connected to the spline shaft, the shift lever is rotationally connected to the gear box and is used to drive the shift fork to slide along the gear box, the spline sleeve is provided inside the shift fork, and when the shift lever drives the shift fork to slide along the gear box, it is used to drive the spline sleeve to slide along the spline shaft, and the output gear is provided on the spline sleeve.

7. The active sun tracking system according to claim 6, characterized in that: The manual drive mechanism includes a handwheel 1, a bevel gear 1, a bevel gear 2, an auxiliary shaft 1, a transmission gear 1, a travel switch 1 and a limit block 1. The handwheel 1 is arranged on one side of the gear box 1, the handwheel 1 is connected to the bevel gear 1, the bevel gear 1 and the bevel gear 2 are meshed with each other, the auxiliary shaft 1 is arranged on the gear box 1, the bevel gear 2 and the transmission gear 1 are both connected to the auxiliary shaft 1, when the handwheel 1 drives the bevel gear 1 to rotate, the transmission of the bevel gear 2 is used to drive the transmission gear 1 to rotate, and the output gear 1 is driven by the gear lever 1 to move in the gear box 1 so that the output gear 1 is matched with the transmission gear 1 or the driving gear arranged in the gear box 1, a travel switch 1 is provided inside the gear box, and the spline shaft 1 is connected to the limit block 1, which is used to limit the position of the limit block 1 by turning on the travel switch 1.

8. The active sun tracking system according to claim 4, characterized in that: The second switching mechanism includes a second shift lever, a second shift fork, a second spline sleeve, a second spline shaft and a worm gear. The second spline shaft is connected to the second retaining ring nut, and the second spline sleeve is slidably connected to the second spline shaft. The second shift lever is rotationally connected to the second gear box and is used to drive the second shift fork to slide along the second gear box. The second spline sleeve is provided inside the second shift fork. When the second shift lever drives the second shift fork to slide along the second gear box, it is used to drive the second spline sleeve to slide along the second spline shaft. The worm gear is provided on the second spline sleeve.

9. The active sun tracking system according to claim 8, characterized in that: The second manual drive mechanism includes a second handwheel, a worm, a second transmission gear, a second travel switch and a second limit block. The second handwheel is slidably connected to the second gear box, the worm is connected to the second handwheel, the second transmission gear is connected to the worm, a second travel switch is provided inside the second gear box, and the second spline shaft is connected to the second limit block. By turning on the second travel switch, the position of the second limit block is limited.

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