Multi-point rotary drive photovoltaic power generation tracking bracket

Abstract

The present invention relates to a multi-point rotary drive photovoltaic power generation tracking bracket, comprising a plurality of columns, a main shaft is rotatably arranged between adjacent columns, a photovoltaic panel assembly is installed on the main shaft, and adjacent main shafts are connected to form synchronous rotation; a main rotary reducer; and at least one auxiliary rotary reducer. When the torque transmitted by the output inner shaft is less than the torque setting range of the torque limiting mechanism, the output inner shaft keeps synchronous rotation with the output outer shaft through the torque limiting mechanism; when the torque transmitted by the output inner shaft is greater than the torque setting range of the torque limiting mechanism, the output inner shaft and the output outer shaft rotate relatively independently. The reduction mechanism in the auxiliary rotary reducer is protected to avoid the problem that the main shaft and the auxiliary rotary reducer are damaged by large torque when the transmission shaft fails.

Description

Technical Field

[0001] The invention relates to the field of photovoltaic power generation, and in particular to a multi-point rotary drive photovoltaic power generation tracking bracket. Background Art

[0002] The current multi-point rotary drive photovoltaic tracking bracket arranges multiple driving points at intervals in each row of photovoltaic brackets, that is, the main shaft is driven to rotate through a rotary reducer, and the main shaft drives the photovoltaic panel to rotate. The rotary reducers arranged in each row rotate synchronously. Each rotary reducer includes an input shaft (also called a synchronous transmission shaft) and an output shaft. The synchronous transmission shafts are connected by synchronous rods, and the output shafts are connected through the main shaft on which the photovoltaic panel is installed. The synchronous transmission shaft in each rotary reducer drives the output shaft to rotate in one direction. Therefore, after the rotary reducers are connected to the main shaft through synchronous rods, the synchronous transmission shaft, output shaft, main shaft and synchronous rod of each rotary reducer in the entire row of photovoltaic brackets rotate synchronously.

[0003] An active rotary reducer (with a driving motor) is provided in each rotary reducer, and the rest are auxiliary rotary reducers. The active rotary reducer drives each auxiliary rotary reducer to operate synchronously.

[0004] The problem existing in the current multi-point rotary drive photovoltaic tracking bracket is that the synchronous drive of the main and auxiliary reducers depends on the coordination of the synchronization rod. At the same time, the relative angle of the main shafts on both sides of the output shaft of the auxiliary rotary reducer is fixed, that is, the rotation of the main shafts on the left and right sides of the auxiliary rotation is synchronous. When the synchronization rod transmission system fails for some reason, the input shaft of the auxiliary rotary reducer (that is, the synchronous transmission shaft) will stop working while the main rotary reducer will continue to rotate with the main shaft, which will cause a huge torque to be formed at both ends of the main shaft between the main and auxiliary rotations, so that the main shaft is forced to undergo torsional deformation and damage, causing damage to the photovoltaic bracket. Summary of the invention

[0005] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art and provide a multi-point rotary drive photovoltaic power generation tracking bracket to solve the problem that when the synchronous rod transmission system fails for some reason, the input shaft of the auxiliary rotary reducer (i.e., the synchronous transmission shaft) will stop working while the main rotary reducer will continue to rotate with the main shaft, so that a huge torque is formed at both ends of the main shaft between the main and auxiliary rotations. When the torque value exceeds the upper limit of the torque limiter between the auxiliary rotary output inner shaft and the output outer shaft, the auxiliary rotary output inner shaft and the output outer shaft begin to rotate independently. At this time, the relative torque value at both ends of the main shaft between the main and auxiliary rotations no longer increases, thereby protecting the main shaft and the auxiliary rotary equipment.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A multi-point rotary drive photovoltaic power generation tracking bracket is provided, comprising:

[0008] A plurality of columns, main shafts are rotatably arranged between adjacent columns, photovoltaic panel assemblies are mounted on the main shafts, and adjacent main shafts are connected to form synchronous rotation;

[0009] A main rotary reducer is installed on one of the columns, the main rotary reducer comprises a main synchronous transmission shaft and a main output shaft, the main synchronous transmission shaft rotates in conjunction with the main output shaft, and the main output shaft is connected to an adjacent main shaft to form synchronous rotation;

[0010] At least one auxiliary rotary reducer is installed on one of the columns; the auxiliary rotary reducer includes an auxiliary synchronous transmission shaft and an auxiliary output shaft; the auxiliary output shaft includes an output inner shaft and an output outer shaft, the outer end of the output inner shaft is connected to the main shaft of the active side to form synchronous rotation, the outer end of the output outer shaft is connected to the main shaft of the driven side to form synchronous rotation, and the inner end of the output inner shaft and the inner end of the output outer shaft are connected to a torque limiting mechanism;

[0011] A transmission connecting rod is connected between the main synchronous transmission shaft and the auxiliary synchronous transmission shaft, so that the main synchronous transmission shaft and the auxiliary synchronous transmission shaft rotate synchronously, and the auxiliary synchronous transmission shaft unidirectionally drives the output outer shaft to rotate in linkage, and the main output shaft drives the output inner shaft to rotate synchronously through the main shaft;

[0012] When the torque transmitted between the output inner shaft and the output outer shaft is less than the torque setting range of the torque limiting mechanism, the output inner shaft keeps synchronous rotation with the output outer shaft through the torque limiting mechanism;

[0013] When the torque transmitted between the output inner shaft and the output outer shaft is greater than the torque setting range of the torque limiting mechanism, the output inner shaft and the output outer shaft rotate relatively independently.

[0014] Further, the torque limiting mechanism includes a steel ball, a spring, a locking bolt and a plurality of ball grooves;

[0015] Each ball groove is arranged in a ring shape on the outer wall of the output inner shaft, and a mounting hole is provided on the output outer shaft. A steel ball, a spring and a locking bolt are arranged in the mounting hole from bottom to top in sequence, and the locking bolt is threadedly connected to the mounting hole and pressed against the steel ball via the spring;

[0016] The outer end of the output inner shaft is inserted into the inner end of the output outer shaft. When the lower part of the steel ball is located in the ball groove of the output inner shaft, the output outer shaft rotates synchronously with the output inner shaft via the steel ball. When the steel ball moves up and leaves the ball groove, the output inner shaft rotates independently.

[0017] Further, the auxiliary rotary reducer includes a housing, a reduction mechanism, an auxiliary synchronous transmission shaft, an output outer shaft and an output inner shaft;

[0018] The auxiliary synchronous transmission shaft is connected to the input end of the speed reduction mechanism, and the output outer shaft is connected to the output end of the speed reduction mechanism. The auxiliary synchronous transmission shaft drives the output outer shaft to rotate in one direction through the speed reduction mechanism.

[0019] Further, the speed reduction mechanism includes a first bevel gear, a second bevel gear, a gear shaft, a first spur gear, a second spur gear, a worm and a turbine;

[0020] The first bevel gear is connected to the auxiliary synchronous transmission shaft, the second bevel gear and the first spur gear are respectively connected to the two ends of the gear shaft, the second spur gear is connected to the worm, the worm cooperates with the turbine, and the turbine is integrally formed with the output outer shaft.

[0021] Furthermore, a pair of first sliding sleeves are arranged between the output outer shaft and the outer shell, and a pair of second sliding sleeves are arranged between the output inner shaft and the output outer shaft.

[0022] Furthermore, the main rotary reducer is installed on the side end of each row of columns, and at least one auxiliary rotary reducer is arranged at intervals on the remaining columns;

[0023] One end of the main synchronous transmission shaft of the main rotary reducer is connected to the secondary synchronous transmission shaft of the adjacent secondary rotary reducer via a transmission connecting rod;

[0024] One end of the main output shaft of the main rotary reducer is connected to the output inner shaft of the secondary output shaft of the adjacent secondary rotary reducer via the main shaft;

[0025] The main shaft is connected between the auxiliary output shafts of two adjacent auxiliary rotary reducers, and the transmission connecting rod is connected between the auxiliary synchronous transmission shafts of two adjacent auxiliary rotary reducers.

[0026] Furthermore, auxiliary slewing reducers are respectively installed on the columns on both sides of the main slewing reducer;

[0027] The two ends of the main synchronous transmission shaft of the main rotary reducer are respectively connected to the auxiliary synchronous transmission shafts of the auxiliary rotary reducers on both sides through transmission connecting rods;

[0028] The two ends of the main output shaft of the main rotary reducer are respectively connected to the output inner shafts in the auxiliary output shafts of the auxiliary rotary reducers on both sides through the main shaft.

[0029] Furthermore, between the spring and the steel ball, the spring abuts against the steel ball via a slider.

[0030] The beneficial effects of the present invention are:

[0031] The multi-point rotary drive photovoltaic power generation tracking bracket of the present invention protects the safe operation of the entire photovoltaic bracket. When the transmission connecting rod fails and cannot synchronously transmit the secondary synchronous transmission shaft of the secondary rotary reducer, the output inner shaft can rotate independently with the output outer shaft, thereby protecting the reduction mechanism in the secondary rotary reducer and avoiding the problem that the main shaft and the secondary rotary reducer are damaged by a large torque when the transmission shaft fails.

[0032] At the same time, it can also reduce the loss of power generation; because when the transmission connecting rod fails, the part of the auxiliary rotation close to the main shaft side can rotate independently with the main shaft, so during the fault, the photovoltaic panels on the tracking bracket do not all stop tracking rotation, and the parts that are not affected by the failed transmission connecting rod still maintain the tracking working state, so that the power generation loss of the tracking bracket when the transmission rod fails is minimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention is further described below in conjunction with the accompanying drawings.

[0034] Figure 1 This is a schematic diagram of a multi-point rotary drive photovoltaic power generation tracking bracket;

[0035] Figure 2 It is a three-dimensional diagram of the auxiliary rotary reducer;

[0036] Figure 3 and Figure 4 This is a half-section view of the auxiliary slewing reducer;

[0037] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0038] Figure 6 It is the schematic diagram of the main rotary reducer;

[0039] Among them, 2, main rotary reducer, 21, main synchronous transmission shaft, 22, main output shaft, 23, driving motor;

[0040] 3. Auxiliary rotary reducer, 31. Auxiliary synchronous transmission shaft, 32. Output inner shaft, 33. Output outer shaft, 34. Speed ​​reduction mechanism, 341. First bevel gear, 342. Second bevel gear, 343. Gear shaft, 344. First spur gear, 345. Second spur gear, 346. Worm, 347. Turbine, 35. First sliding sleeve, 36. Second sliding sleeve;

[0041] 4. torque limiting mechanism, 41. steel ball, 42. spring, 43. locking bolt, 44. ball groove, 45. slider;

[0042] 5. Main shaft, 6. Transmission connecting rod. DETAILED DESCRIPTION

[0043] The present invention will now be further described in conjunction with specific embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0044] like Figures 1 to 6 As shown, a multi-point rotary drive photovoltaic power generation tracking bracket includes a plurality of columns, a main shaft 5 is rotatably arranged between adjacent columns, a photovoltaic panel assembly is installed on the main shaft 5, and adjacent main shafts 5 are connected to form synchronous rotation;

[0045] A main rotary reducer 2 is installed on one of the columns. The main rotary reducer 2 includes a main synchronous transmission shaft 21 and a main output shaft 22. The main synchronous transmission shaft 21 rotates in conjunction with the main output shaft 22. The main output shaft 22 is connected to the adjacent main shaft 5 to form synchronous rotation.

[0046] At least one auxiliary rotary reducer 3 is installed on one of the columns; the auxiliary rotary reducer 3 includes an auxiliary synchronous transmission shaft 31 and an auxiliary output shaft; the auxiliary output shaft includes an output inner shaft 32 and an output outer shaft 33, the outer end of the output inner shaft 32 is connected to the main shaft 5 on the active side to form synchronous rotation, the outer end of the output outer shaft 33 is connected to the main shaft 5 on the driven side to form synchronous rotation, and the inner end of the output inner shaft 32 and the inner end of the output outer shaft 33 are connected to the torque limiting mechanism 4;

[0047] A transmission connecting rod 6 is connected between the main synchronous transmission shaft 21 and the auxiliary synchronous transmission shaft 31, so that the main synchronous transmission shaft 21 and the auxiliary synchronous transmission shaft 31 rotate synchronously, and the auxiliary synchronous transmission shaft 31 unidirectionally drives the output outer shaft 33 to rotate in linkage, and the main output shaft 22 drives the output inner shaft 32 to rotate synchronously through the main shaft 5;

[0048] When the torque transmitted between the output inner shaft 32 and the output outer shaft 33 is less than the torque setting range of the torque limiting mechanism 4, the output inner shaft 32 keeps synchronous rotation with the output outer shaft 33 through the torque limiting mechanism 4;

[0049] When the torque transmitted between the output inner shaft 32 and the output outer shaft 33 is greater than or equal to the torque setting range of the torque limiting mechanism 4 , the output inner shaft 32 and the output outer shaft 33 rotate relatively independently.

[0050] In this embodiment, the so-called main shaft 5 on the active side refers to the main shaft 5 on the side of the auxiliary rotary reducer 3 close to the main rotary reducer 2, and the opposite side is the main shaft 5 on the driven side.

[0051] Specifically, as an optional implementation in this embodiment, Figure 5 As shown, the torque limiting mechanism 4 includes a steel ball 41, a spring 42, a locking bolt 43 and a plurality of ball grooves 44;

[0052] Each ball groove 44 is arranged in a ring shape on the outer wall of the output inner shaft 32. The output outer shaft 33 is provided with a mounting hole. A steel ball 41, a spring 42 and a locking bolt 43 are arranged in the mounting hole from bottom to top. The locking bolt 43 is threadedly connected to the mounting hole and is pressed against the steel ball 41 via the spring 42.

[0053] The outer end of the output inner shaft 32 is inserted into the inner end of the output outer shaft 33. When the lower part of the steel ball 41 is located in the ball groove 44 of the output inner shaft 32, the output outer shaft 33 rotates synchronously with the output inner shaft 32 via the steel ball 41. When the steel ball 41 moves up and leaves the ball groove 44, the output inner shaft 32 rotates independently.

[0054] In this embodiment, the screwing depth of the locking bolt 43 determines the pressing force of the locking bolt 43 on the spring 42, thereby limiting the tangential force that the steel ball 41 can withstand, that is, the torque of the torque limiting mechanism 4 can be controlled by adjusting the locking bolt 43.

[0055] In this embodiment, the depth of the lower portion of the steel ball 41 in the ball groove 44 is less than the radius of the steel ball 41 , and the specific depth is adjusted according to the actual required torque.

[0056] In this embodiment, the spring 42 is in contact with the steel ball 41 via the slider 45 between the spring 4 and the steel ball 41 .

[0057] In this embodiment, the shape of the ball groove can also be replaced by any one of a V-shaped groove, a trapezoidal groove, and a rectangular groove.

[0058] Specifically, as an optional implementation in this embodiment, Figure 2 Figure 3 Figure 4 As shown, the auxiliary rotary reducer 3 includes a housing, a reduction mechanism 34, an auxiliary synchronous transmission shaft 31, an output outer shaft 33 and an output inner shaft 32;

[0059] The auxiliary synchronous transmission shaft 31 is connected to the input end of the speed reduction mechanism 34 , and the output outer shaft 33 is connected to the output end of the speed reduction mechanism 34 . The auxiliary synchronous transmission shaft 31 drives the output outer shaft 33 to rotate in one direction through the speed reduction mechanism 34 .

[0060] Specifically, as an optional implementation in this embodiment, Figure 3 Figure 4 As shown, the speed reduction mechanism 34 includes a first bevel gear 341, a second bevel gear 342, a gear shaft 343, a first spur gear 344, a second spur gear 345, a worm 346 and a turbine 347;

[0061] The first bevel gear 341 is connected to the auxiliary synchronous transmission shaft 31, the second bevel gear 342 and the first spur gear 344 are respectively connected to the two ends of the gear shaft 343, the second spur gear 345 is connected to the worm 346, the worm 346 cooperates with the turbine 347, and the turbine 347 is integrally formed with the output outer shaft 33.

[0062] Specifically, as an optional implementation in this embodiment, Figure 4 As shown, a pair of first sliding sleeves 35 are arranged between the output outer shaft 33 and the housing, and a pair of second sliding sleeves 36 are arranged between the output inner shaft 32 and the output outer shaft 33 .

[0063] The principle and structure of the main rotary reducer 2 are the same as those of the auxiliary rotary reducer 3, except that a drive motor 23 is added to the main rotary reducer 2, and the drive motor 23 is connected to the gear shaft in the main rotary reducer 2 to realize transmission. The structure of the main rotary reducer 2 is as follows Figure 6 shown.

[0064] In the main rotary reducer 2, the main synchronous transmission shaft 21 and the main output shaft 22 are driven to rotate by the gear shaft. Therefore, the main synchronous transmission shaft 21 and the main output shaft 22 are only in a linked rotation relationship. In the auxiliary rotary reducer 3, since the gear shaft is not connected to the drive motor, the auxiliary synchronous transmission shaft 31 is used to unidirectionally drive the output outer shaft 33 to rotate.

[0065] The main synchronous transmission shaft 21 can output power on one side or on both sides according to the different positions of the main rotary reducer 2 in each row of brackets. The following lists two forms of photoelectric spot tracking brackets according to the different installation positions of the main rotary reducer 2:

[0066] The first type is a single-sided transmission of the main rotary reducer 2: the main rotary reducer 2 is installed on the side end of each row of columns, and at least one auxiliary rotary reducer 3 is arranged at intervals on the remaining columns;

[0067] One end of the main synchronous transmission shaft 21 of the main rotary reducer 2 is connected to the secondary synchronous transmission shaft 31 of the adjacent secondary rotary reducer 3 via a transmission connecting rod 6;

[0068] One end of the main output shaft 22 of the main rotary reducer 2 is connected to the output inner shaft 32 in the secondary output shaft of the adjacent secondary rotary reducer 3 via the main shaft 5;

[0069] The main shaft 5 is connected between the secondary output shafts of two adjacent secondary rotary reducers 3 , and the transmission connecting rod 6 is connected between the secondary synchronous transmission shafts 31 of two adjacent secondary rotary reducers 3 .

[0070] The second type is double-sided transmission of the main rotary reducer 2: auxiliary rotary reducers 3 are respectively installed on the columns on both sides of the main rotary reducer 2;

[0071] The two ends of the main synchronous transmission shaft 21 of the main rotary reducer 2 are respectively connected to the auxiliary synchronous transmission shafts 31 of the auxiliary rotary reducers 3 on both sides through transmission connecting rods 6;

[0072] Both ends of the main output shaft 22 of the main rotary reducer 2 are connected to the output inner shafts 32 of the auxiliary output shafts of the auxiliary rotary reducers 3 on both sides through the main shaft 5 respectively.

[0073] The working principle of the multi-point rotary drive photovoltaic tracking bracket is as follows:

[0074] The driving motor 23 drives the main synchronous transmission shaft 21 and the main output shaft 22 in the main rotary reducer 2 to rotate at a certain speed ratio i. The main synchronous transmission shaft 21 rotates synchronously with the auxiliary synchronous transmission shaft 31 of the auxiliary rotary reducer 3 through the transmission connecting rod 6. At the same time, the main output shaft 22 rotates synchronously with the output inner shaft 32 of the auxiliary rotary reducer 3 through the main shaft 5 on the active side, and the output outer shaft 33 of the auxiliary rotary reducer 3 is connected to the main shaft 5 on the driven side. The output inner shaft 32 and the output outer shaft 33 are connected by torque. The limiting mechanism 4 is used to transmit torque. When the torque between the output inner shaft 32 and the output outer shaft 33 is less than the torque set by the torque limiting mechanism, the main synchronous transmission shaft 21 in the main rotary reducer 2, the transmission connecting rod 6 and the auxiliary synchronous transmission shaft 31 of the auxiliary rotary reducer 3 all rotate synchronously at a speed n1, and the main output shaft 22, the output inner shaft 32, the output outer shaft 33, the main shaft 5 on the active side and the main shaft 5 on the driven side all rotate synchronously at a speed n2, wherein: the speed ratio i=n2 / n1.

[0075] When the transmission connecting rod 6 on the active side fails, the main rotary reducer 2 will continue to drive the output inner shaft 32 of the auxiliary rotary reducer 3 to rotate through the main shaft 5 on the active side. When the torque of the output inner shaft 32 is greater than or equal to the torque set by the torque limiting mechanism, the output inner shaft 32 will be disengaged from the output outer shaft 33, and the output inner shaft 32 will start to rotate independently, that is, it will continue to drive the photovoltaic panel on the active side to adjust the angle, while the main shaft 5 on the driven side will no longer rotate, thereby effectively protecting the reduction mechanism 34 in the auxiliary rotary reducer 3 and preventing the auxiliary rotary reducer 3 from being damaged.

[0076] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A multi-point rotary drive photovoltaic power generation tracking bracket, characterized in that: include A plurality of columns, main shafts are rotatably arranged between adjacent columns, photovoltaic panel assemblies are mounted on the main shafts, and adjacent main shafts are connected to form synchronous rotation; A main rotary reducer is mounted on one of the columns, the main rotary reducer comprises a main synchronous transmission shaft and a main output shaft, the main synchronous transmission shaft is suitable for rotating in conjunction with the main output shaft, and the main output shaft is connected to an adjacent main shaft to form synchronous rotation; At least one auxiliary rotary reducer is installed on one of the columns; the auxiliary rotary reducer includes an auxiliary synchronous transmission shaft and an auxiliary output shaft; the auxiliary output shaft includes an output inner shaft and an output outer shaft, the outer end of the output inner shaft is connected to the main shaft of the active side to form synchronous rotation, the outer end of the output outer shaft is connected to the main shaft of the driven side to form synchronous rotation, and the inner end of the output inner shaft and the inner end of the output outer shaft are connected to a torque limiting mechanism; A transmission connecting rod is connected between the main synchronous transmission shaft and the auxiliary synchronous transmission shaft, so that the main synchronous transmission shaft and the auxiliary synchronous transmission shaft rotate synchronously, and the auxiliary synchronous transmission shaft unidirectionally drives the output outer shaft to rotate in linkage, and the main output shaft drives the output inner shaft to rotate synchronously through the main shaft; When the torque transmitted between the output inner shaft and the output outer shaft is less than the torque setting range of the torque limiting mechanism, the output inner shaft keeps synchronous rotation with the output outer shaft through the torque limiting mechanism; When the torque transmitted between the output inner shaft and the output outer shaft is greater than the torque setting range of the torque limiting mechanism, the output inner shaft and the output outer shaft rotate relatively independently; The torque limiting mechanism includes a steel ball, a spring, a locking bolt and a plurality of ball grooves; Each ball groove is arranged in a ring shape on the outer wall of the output inner shaft, and a mounting hole is provided on the output outer shaft. A steel ball, a spring and a locking bolt are arranged in the mounting hole from bottom to top in sequence, and the locking bolt is threadedly connected to the mounting hole and pressed against the steel ball via the spring; The outer end of the output inner shaft is inserted into the inner end of the output outer shaft. When the lower part of the steel ball is located in the ball groove of the output inner shaft, the output outer shaft rotates synchronously with the output inner shaft through the steel ball. When the steel ball moves up and leaves the ball groove, the output inner shaft rotates independently. The auxiliary rotary reducer comprises a housing, a reduction mechanism, an auxiliary synchronous transmission shaft, an output outer shaft and an output inner shaft; The auxiliary synchronous transmission shaft is connected to the input end of the speed reduction mechanism, and the output outer shaft is connected to the output end of the speed reduction mechanism. The auxiliary synchronous transmission shaft drives the output outer shaft to rotate in one direction through the speed reduction mechanism.

2. The multi-point rotary drive photovoltaic power generation tracking bracket according to claim 1 is characterized in that: The speed reduction mechanism comprises a first bevel gear, a second bevel gear, a gear shaft, a first spur gear, a second spur gear, a worm and a turbine; The first bevel gear is connected to the auxiliary synchronous transmission shaft, the second bevel gear and the first spur gear are respectively connected to the two ends of the gear shaft, the second spur gear is connected to the worm, the worm cooperates with the turbine, and the turbine is integrally formed with the output outer shaft.

3. The multi-point rotary drive photovoltaic power generation tracking bracket according to claim 1 is characterized in that: A pair of first sliding sleeves are arranged between the output outer shaft and the housing, and a pair of second sliding sleeves are arranged between the output inner shaft and the output outer shaft.

4. The multi-point rotary drive photovoltaic power generation tracking bracket according to claim 1 is characterized in that: The main rotary reducer is installed on the side end of each row of columns, and at least one auxiliary rotary reducer is arranged at intervals on the remaining columns; One end of the main synchronous transmission shaft of the main rotary reducer is connected to the secondary synchronous transmission shaft of the adjacent secondary rotary reducer via a transmission connecting rod; One end of the main output shaft of the main rotary reducer is connected to the output inner shaft of the secondary output shaft of the adjacent secondary rotary reducer via the main shaft; The main shaft is connected between the auxiliary output shafts of two adjacent auxiliary rotary reducers, and the transmission connecting rod is connected between the auxiliary synchronous transmission shafts of two adjacent auxiliary rotary reducers.

5. The multi-point rotary drive photovoltaic power generation tracking bracket according to claim 1 is characterized in that: Auxiliary slewing reducers are respectively installed on the columns on both sides of the main slewing reducer; The two ends of the main synchronous transmission shaft of the main rotary reducer are respectively connected to the auxiliary synchronous transmission shafts of the auxiliary rotary reducers on both sides through transmission connecting rods; The two ends of the main output shaft of the main rotary reducer are respectively connected to the output inner shafts in the auxiliary output shafts of the auxiliary rotary reducers on both sides through the main shaft.

6. The multi-point rotary drive photovoltaic power generation tracking bracket according to claim 1 is characterized in that: The spring is in contact with the steel ball via a slider between the spring and the steel ball.

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