A flat single-axis multi-point drive mechanism with a main beam torque tube passing through it

Abstract

The present invention discloses a flat single-axis multi-point drive mechanism that passes through a main beam torque tube, comprising a column; a rotary reducer arranged on the column, the rotary reducer being driven by a motor; a main beam passing through the rotary reducer; the rotary reducer at least comprising a mounting seat detachably arranged on the column, a fixing sleeve arranged on the mounting seat, a transmission box rotatably arranged on the fixing sleeve, and a power assembly for driving the transmission box to rotate relative to the fixing sleeve, the transmission box being provided with a mounting hole for the main beam to pass through; the main beam being connected to the transmission box through a plurality of locking members. The present invention passes the main beam through the middle of the rotary reducer, and the main beam is connected to the transmission box through locking members, so a group of flat single-axis main beams can reduce joints, a single main beam can be made the longest, and material cutting waste can be reduced, while reducing the difficulty of on-site construction and improving the installation progress.

Description

Technical Field

[0001] The invention belongs to the technical field of solar power generation, and in particular relates to a flat single-axis multi-point driving mechanism with a main beam torque tube passing through it. Background Art

[0002] At present, the proportion of solar photovoltaic power generation in the power market is rising rapidly, and the market prospects are extremely promising. The use of tracking power generation systems in large commercial power stations can increase the power generation of power stations by more than 20% compared with fixed power generation systems. Therefore, there will be more and more commercial power stations using tracking power generation in the future. The current mainstream flat single-axis or inclined single-axis tracking power generation systems in the market have an increasing installed power due to the increase in component power, and their structural shortcomings are becoming increasingly obvious. They are gradually unable to adapt to the higher and more usage requirements of trackers in the future. The main beam of a conventional flat single-axis is connected to the rotary reducer through a joint. The main beam needs to be cut when cutting, which is easy to cause material waste, and it will also cause waste due to the inappropriate length of the main beam caused by the error of the on-site column construction. The on-site construction is difficult and affects the installation progress. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a flat single-axis multi-point driving mechanism which is passed through a main beam torque tube and has less material waste.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a flat single-axis multi-point drive mechanism passing through the main beam torque tube, comprising

[0005] Column;

[0006] A rotary reducer arranged on the column, the rotary reducer is driven by a motor, and the motor is controlled by a controller;

[0007] A main beam passing through the slewing reducer, the main beam being driven to rotate by at least one slewing reducer;

[0008] The slewing reducer at least comprises a mounting seat detachably mounted on the column, a fixing sleeve mounted on the mounting seat, a transmission box rotatably mounted on the fixing sleeve, and a power assembly for driving the transmission box to rotate relative to the fixing sleeve, and the transmission box is provided with a mounting hole for the main beam to pass through;

[0009] The main beam is connected to the transmission box through a plurality of locking members, and the plurality of locking members are inserted between the inner wall of the mounting hole and the main beam from one side of the transmission box, and the locking members are anti-rotationally fitted with the outer wall of the main beam and the inner wall of the mounting hole.

[0010] The main beam passes through the middle of the slewing reducer and is connected to the transmission box through locking parts. Therefore, a set of flat single-axis main beams can reduce joints, make a single main beam as long as possible, reduce material cutting waste, and avoid waste caused by inappropriate main beam length caused by errors in on-site column construction. At the same time, it reduces the difficulty of on-site construction and improves installation progress.

[0011] Optionally, the mounting hole has a taper, and the locking member is provided with a taper matching the mounting hole.

[0012] Optionally, the locking member is provided with at least two folded edge portions and a connecting portion connected to the folded edge portions, and the upper taper of the locking member is arranged outside the folded edge portions.

[0013] Optionally, there is an angle between the two folded edge portions, and the angle corresponds to the angle between adjacent side edges of the main beam.

[0014] Optionally, the connecting portion is detachably connected to the transmission box. When the connecting portion is connected to the transmission box, the folded edge portion is inserted into the mounting hole, and the connection between adjacent folded edge portions corresponds to the edge of the mounting hole.

[0015] Optionally, a plurality of reinforcing ribs are provided on the inner wall of the mounting hole, and the outer edge of the folded edge portion is extruded and matched with the reinforcing ribs.

[0016] Optionally, the strength near the edge of the main beam is greater than the strength of the side of the main beam.

[0017] Optionally, supports are symmetrically provided on both side surfaces of the column, one side of the support is connected to the column by fastening bolts, and the other side is flush with the top surface of the column to form an installation plane, and the rotary reducer is installed on the installation plane.

[0018] Optionally, a first strip-shaped hole is provided on a side of the mounting seat close to the support, and a fastening bolt passes through the first strip-shaped hole and is connected to the support.

[0019] Optionally, the mounting seat is provided with an extension portion along the length direction of the column, one side of the extension portion is in contact with the column, and a second strip hole is provided on the extension portion, and a fastening bolt portion passes through the second strip hole to be connected to the column.

[0020] To sum up, in the present invention, the main beam passes through the middle of the rotary reducer, and the main beam is connected to the transmission box through a locking piece. Therefore, a group of flat single-axis main beams can reduce joints, and a single main beam can be made as long as possible, thereby reducing material cutting waste and avoiding waste caused by inappropriate main beam length caused by errors in on-site column construction. At the same time, it reduces the difficulty of on-site construction and improves installation progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a stereogram of the present invention.

[0022] Figure 2 for Figure 1 Another perspective of the stereogram

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0024] Figure 4 for Figure 1 A three-dimensional diagram of the mid-swing reducer associated with the locking piece and the transmission tube.

[0025] Figure 5 for Figure 4 Partial stereogram from another angle.

[0026] Figure 6 for Figure 5 A sectional perspective view of .

[0027] Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0028] Figure 8 for Figure 5 Another cutaway perspective view of .

[0029] Fig. 9 for Figure 5 Other sectional perspective views of the .

[0030] Fig.10 for Fig. 9 Enlarged view of point C in the middle.

[0031] Fig.11 for Figure 5 Exploded diagram.

[0032] Fig.12 for Figure 1 A three-dimensional view of the transmission case.

[0033] Fig.13 for Figure 1 A three-dimensional view of the fixing sleeve.

[0034] Fig.14 for Figure 1 A perspective view of the middle mounting base.

[0035] Fig.15 for Figure 1 A three-dimensional view of the locking member. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the patent scheme of the present invention, the technical scheme in the patent embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the patent embodiment of the present invention.

[0037] refer to Figure 1 , Figure 2 , a flat single-axis multi-point drive mechanism with a main beam torque tube passing through, comprising a column 10, a main beam 21, a rotary reducer 30 and a motor 31; the column 10 is used as a support member, and the column 10 is set in an "H" shape to support the drive mechanism as a whole. Of course, in other embodiments, the column 10 can be set as a cylindrical tube or a polygonal tube; the main beam 21 is set as a polygonal tube, and at least one solar panel 51 is installed on the main beam 21. The number of the solar panels 51 can be arranged according to the actual working conditions, and the length of the parallel main beam 21 can be adjusted accordingly; the main The beam 21 is driven to rotate by a rotary reducer 30 to change the angle of the solar panel 51. The rotary reducer 30 can be detachably mounted on the column 10, and the rotary reducer 30 is driven to rotate by a motor 31, and the motor 31 is controlled by a controller (not shown). There is at least one rotary reducer 30, and the number of the rotary reducers 30 can be adjusted accordingly according to the number of solar panels 51 installed on the main beam 21. Multiple rotary reducers 30 on the same main beam 21 can be driven individually by corresponding motors 31 or multiple rotary reducers 30 can share one motor 31.

[0038] refer to Figure 4 , Figure 5 In some embodiments, a drive shaft 32 is also connected to the rotary reducer 30, and the drive shaft 32 is driven to rotate by the rotary reducer 30. The two ends of the drive shaft 32 extend from the inside of the rotary reducer 30 to the outside, and the two ends are respectively provided with a first connecting end 321 and a second connecting end 322. The first connecting end 321 is connected to the second connecting end 322 on the adjacent rotary reducer 30 through a transmission tube 41 to drive the movement of the adjacent rotary reducer 30 or maintain the synchronization of the movement of the adjacent rotary reducer 30; the first and second connecting ends 322 are each provided with two connecting holes 323, and the two connecting holes 323 are staggered and perpendicular to each other, so as to facilitate the connection of the first and second connecting ends 322 with the transmission tube 41.

[0039] refer to Figure 6In some embodiments, the rotary reducer 30 includes a mounting seat 33, a fixing sleeve 34, a transmission box 35 and a power assembly; the mounting seat 33 is detachably mounted on the end of the column 10, and a first flange surface 331 is provided on the mounting seat 33, and a center hole 332 is opened in the middle of the first flange surface 331; the fixing sleeve 34 is detachably mounted on the mounting seat 33, and the axis of the fixing sleeve 34 coincides with the axis of the center hole 332, and a second flange surface 341 is provided on one end of the fixing sleeve 34 facing the mounting seat 33, and the fixing sleeve 34 is connected to the second flange surface 341 through the first flange surface 331 to fix and support the fixing sleeve 34; the transmission box 35 The main beam 21 is passed through the mounting hole 351 and moves synchronously with the transmission box 35. Therefore, a set of flat single-axis main beams 21 can reduce joints, and a single main beam can be made as long as possible, thereby reducing material cutting waste and avoiding waste caused by inappropriate main beam length caused by errors in on-site column construction. At the same time, it reduces the difficulty of on-site construction and improves installation progress. The power component is used to drive the transmission box 35 to rotate relative to the fixed sleeve 34, thereby driving the main beam 21 to rotate, so as to achieve adjustable angle of the solar panel 51.

[0040] refer to Figure 1 , Fig.14 In some embodiments, supports 11 are symmetrically provided on both side surfaces of the column 10. The supports 11 are set to be L-shaped, one side of which is detachably connected to the column 10, and the other side is flush with the top surface of the column 10 to form a mounting plane. The two supports 11 and the column 10 jointly support the mounting seat 33 to improve the stability of the mounting seat 33; a first strip hole 333 is provided on the connecting surface between the mounting seat 33 and the support 11, and the fastening bolt passes through the first strip hole 333 and is connected to the support 11. The position of the mounting seat 33 on the support 11 can be appropriately adjusted through the first strip hole 333; the mounting seat 33 is provided with an extension portion 334 along the length direction of the column 10, and the extension portion 334 is in contact with the column 10 and is connected by the fastening bolt to improve the stability of the mounting seat 33, and a second strip hole 335 is provided on the extension portion 334, and the fastening bolt partially passes through the second strip hole 335 to avoid the fastening bolt from affecting the displacement of the mounting seat 33.

[0041] refer to Figure 6 , Figure 7 , Fig.12In some embodiments, the transmission box 35 is configured as a chimney structure, the transmission box 35 is provided with an inner ring 352 and an outer ring 353, and the transmission box 35 is provided with a first transmission chamber 354, a second transmission chamber 355 and a third transmission chamber 356, the first transmission chamber 354 is configured as an annular chamber, the first transmission chamber 354 is provided between the inner ring 352 and the outer ring 353, and is arranged around the outer side of the inner ring 352, and the center line of the first transmission chamber 354 coincides with the center line of the fixed sleeve 34, and the fixed sleeve 34 is partially inserted to In the first transmission chamber 354, by providing an inner ring 352 and an outer ring 353 on the transmission box 35, and the inner ring 352 is directly rotatably connected to the fixed sleeve 34, the transmission box 35 is connected to the fixed sleeve 34, reducing the intermediate transmission links, making the structure of the rotary reducer 30 compact, improving the assembly efficiency, and reducing the production cost; the second transmission chamber 355 is set as a cylindrical chamber, which is connected to the first transmission chamber 354; the third transmission chamber 356 is set at the end of the second transmission chamber 355, and is connected to the second transmission chamber 355.

[0042] refer to Figure 8 , Fig. 9In some embodiments, the power assembly includes a tooth portion 342, a worm 361, a first bearing 362, a first bevel gear 363, a second bevel gear 364 and a third bevel gear 365; the tooth portion 342 is set as an arc gear, which is arranged on the outer wall of the fixed sleeve 34, and the tooth portion 342 is a part of the fixed sleeve 34; the worm 361 is rotatably arranged in the second transmission cavity 355 along the length direction of the second transmission cavity 355, and the worm 361 is meshed with the tooth portion 342. Further, the worm 361 is set as a toroidal worm 361, and the axial shape of the meshing part of the worm 361 and the tooth portion 342 is a rotating curved surface formed with a concave arc as a generatrix, so that the number of teeth that are meshed with the tooth portion 342 at the same time is large, it is easy to form a lubricating oil film, and the transmission is improved. The first bearing 362 has high dynamic efficiency and large load-bearing capacity; two first bearings 362 are provided and are configured as tapered roller bearings. The two first bearings 362 are respectively arranged at both ends of the worm 361, which can withstand radial and axial combined loads and have large load-bearing capacity; the first bevel gear 363 is sleeved on one end of the worm 361 and is fixedly connected to the worm 361, and the first bevel gear 363 is arranged in the third transmission cavity 356; the second bevel gear 364 is arranged in the third transmission cavity 356 and meshes with the first bevel gear 363. The second bevel gear 364 is driven to rotate by the motor 31, and the motor 31 is installed on the transmission box 35; the third bevel gear 365 is sleeved on the drive shaft 32 and is fixedly connected to the drive shaft 32, and the third bevel gear 365 meshes with the first bevel gear 363. The motor 31 drives the worm 361 to rotate through the second bevel gear 364 and the first bevel gear 363, so that the worm 361 meshes and rotates with the tooth portion 342. Since the fixed sleeve 34 is fixedly mounted on the mounting seat 33, the worm 361 rotates while revolving around the fixed sleeve 34, thereby driving the transmission box 35 and the main beam 21 mounted on the transmission box 35 to rotate, thereby achieving the angle adjustment of the solar panel 51. In addition, the first bevel gear 363 rotates while driving the third bevel gear 365 to rotate, thereby driving the drive shaft 32 to rotate, so that the drive shaft 32 rotates while rotating around the fixed sleeve 34.

[0043] refer to Fig.12 , Fig.13In some embodiments, a limiting protrusion 343 is provided at one end of the fixing sleeve 34 facing away from the mounting seat 33, and the limiting protrusion 343 is a part of the fixing sleeve 34. Two limiting protrusions 343 are provided, one of which corresponds to the starting end of the tooth portion 342, and the other corresponding to the terminal end of the tooth portion 342; of course, in other embodiments, the positions of the two limiting protrusions 343 can be designed according to actual conditions; a stopper 357 is provided on the side wall of the first transmission cavity 354 facing the end of the fixing sleeve 34, and the stopper 357 cooperates with the limiting protrusion 343 to limit the rotation angle of the transmission box 35, thereby ensuring a high safety protection capability when the travel switch fails.

[0044] refer to Figure 6 , Figure 7 In some embodiments, a second bearing 37 and a third bearing 38 are provided between the fixed sleeve 34 and the inner ring 352. The second bearing 37 is a four-point contact ball bearing, and the third bearing 38 is a self-lubricating bearing. The first bearing 362 cooperates with the second bearing 37 to withstand large radial and axial forces, and can also withstand overturning loads, so that the flat single-axis multi-point drive mechanism can be used in sloped working conditions. A gap is provided between the inner ring 352 and the fixed sleeve 34 to ensure the installation and lubrication of the second and third bearings.

[0045] refer to Figure 6 , Figure 7 In some embodiments, the second and third bearings are formed by the cooperation of the fixed sleeve 34 and the inner ring 352. The second bearing 37 includes an annular slide 371 formed between the fixed sleeve 34 and the inner ring 352 and a plurality of balls 372 arranged in the annular slide 371, so that the structure is compact and the overall volume of the drive mechanism is reduced; the third bearing 38 includes a guide groove 381 arranged on the fixed sleeve 34 and a bushing 382 slidably arranged in the guide groove 381, so that the fixed sleeve 34 and the inner ring 352 are connected only through the second and third bearings, and the lubrication of the second and third bearings is ensured, so that the structure is compact and the overall volume of the mechanism is reduced.

[0046] refer to Figure 7In some embodiments, a first seal 391 is embedded between the fixed sleeve 34 and the inner ring 352, and a second seal 392 is embedded between the fixed sleeve 34 and the outer ring 353. The first seal 391 and the second seal 392 cooperate to form a seal on the first transmission cavity 354 to prevent the lubricating oil in the first transmission cavity 354 from leaking out and to isolate impurities; preferably, the first seal 391 and the second seal 392 are both lip seals. At the same time, the first seal 391 is located on the side of the first flange surface 331 close to the second flange surface 341, and the second seal 392 is located on the side of the second flange surface 341 close to the outer ring 353. The first flange surface 331 shields the first seal 391, and the second flange surface 341 shields the second seal 392 to avoid direct sunlight, delay the aging of the first and second seals 392, and improve the sealing reliability of the rotary reducer 30.

[0047] refer to Figure 8 In some embodiments, an oil inlet hole 3581 is provided on the side wall of the transmission box 35 for adding lubricating oil into the first transmission chamber 354 , and a first sealing cover 3582 is detachably provided in the oil inlet hole 3581 to seal the oil inlet hole 3581 .

[0048] refer to Figure 8-10 In some embodiments, a mounting boss 359 is provided on the side of the second transmission cavity 355 away from the third transmission cavity 356. A locking cover 42 is screwed on the mounting boss 359 to facilitate observation of the operation of the first bearing 362, and one end of the locking cover 42 abuts against the first bearing 362; the locking cover 42 is provided with a plurality of positioning holes 421 in the radial direction. After the locking cover 42 is installed in place, the locking cover 42 is connected to the transmission box 35 by installing set screws 422 in the positioning holes 421 to prevent the locking cover 42 from shifting during the operation of the drive mechanism. A through hole 423 is provided in the middle of the locking cover 42. A second sealing cover 43 is removably provided in the through hole 423. The second sealing cover 43 is easily removable to facilitate filling of lubricating oil to the first bearing 362 and observation of the operation; a sealing groove 424 is provided on the locking cover 42. A third sealing member 44 is provided in the sealing groove 424 to seal the gap between the locking cover 42 and the mounting boss 359. When the locking cover 42 is installed in place, the end face of the locking cover 42 is flush with the end face of the mounting boss 359, and a plurality of locking grooves 425 are arranged around the through hole 423 at one end of the locking cover 42 facing away from the worm 361. The locking cover 42 can only be rotated when a matching key cooperates with the locking groove 425, thereby preventing unauthorized opening or closing by unauthorized personnel, thereby enhancing the safety level.

[0049] refer to Figure 8In some embodiments, the third transmission chamber 356 is set as an opening at one end away from the worm 361 to facilitate the installation of the first, second, and third bevel gears, and the transmission box 35 is detachably connected to a cover plate 3551 for closing the opening. After removing the cover plate 3551, it is convenient to observe the operating conditions of each bevel gear in the third transmission chamber 356, which is convenient for fault repair.

[0050] refer to Fig.11 In some embodiments, a fourth bearing 366 and a fifth bearing 367 are provided at the connection between the drive shaft 32 and the transmission box 35. The fourth bearing 366 is provided at one end of the transmission box 35 facing the mounting seat 33, and a first end cover 3561 for limiting the fourth bearing 366 is detachably connected to the transmission box 35; the fifth bearing 367 is provided at the side of the transmission box 35 away from the mounting seat 33, one end of the fifth bearing 367 abuts against the third bevel gear 365, and a second end cover 3562 for limiting the fifth bearing 367 is detachably connected to the transmission box 35. Preferably, the fourth bearing 366 is a deep groove ball bearing, and the fifth bearing 367 is a tapered roller bearing.

[0051] refer to Figure 1 , Fig.11 In some embodiments, the mounting hole 351 is set as a polygonal hole, the shape and size of the mounting hole 351 correspond to the main beam 21, and the mounting hole 351 is tapered along the length direction; a plurality of locking members 60 are provided between the main beam 21 and the wall of the mounting hole 351 to limit the relative position of the main beam 21 and the side wall of the mounting hole 351, and the locking members 60 and the main beam 21 and the inner wall of the mounting hole 351 are all anti-rotationally fitted.

[0052] Specifically, refer to Fig.15The locking member 60 is provided with at least two folded edges 61 and a connecting portion 62 connected to the folded edges 61. An angle is formed between the two folded edges 61, and the angle corresponds to the angle between the adjacent sides of the main beam 21. The size of the inner edge of the folded edge 61 corresponds to the size near the edge of the main beam 21, and can be completely fitted with the main beam 21; the outer edge of the folded edge 61 is provided with a taper, and the taper and size of the folded edge 61 and the edge of the mounting hole 351 are the same; the connecting portion 62 is connected to the transmission box 35 through Screw connection; when the main beam 21 is connected to the mounting hole 351, multiple locking pieces 60 are respectively fitted on the edges of the main beam 21, and the outer taper of the locking piece 60 matches the inner taper of the mounting hole 351, and the connection between the adjacent folded edge parts 61 corresponds to the edge of the mounting hole 351, and then the screw is turned to push the locking piece 60 to move axially, and then the locking piece 60 is stuck in the mounting hole 351 until the surface of the main beam 21 is completely fitted with the locking piece 60, thereby locking the main beam 21 axially and radially. In this installation method, the main beam 21 passes through the middle of the rotary reducer 30, so a group of flat single-axis main beams 21 can reduce joints, and a single main beam 21 can be made as long as possible, reducing material cutting waste, and avoiding waste caused by inappropriate length of the main beam 21 due to construction errors of the on-site columns 10, while reducing the difficulty of on-site construction and improving installation progress.

[0053] In some embodiments, because the folded edge portion 61 is completely in contact with both sides of the edge of the main beam 21 and squeezes the main beam 21, the strength near the edge of the main beam 21 in the present invention is greater than the strength of the side of the main beam 21, thereby avoiding the deformation of the main beam 21 due to the small joint surface and improving the deformation resistance of the main beam 21.

[0054] refer to Figure 6 In some embodiments, a plurality of reinforcing ribs 3511 are provided on the inner wall of the mounting hole 351 along the length direction. When the connecting portion 62 is connected to the transmission box 35, the outer edge of the folded edge portion 61 is squeezed and fitted with the reinforcing ribs 3511. A first weight-reducing groove 3512 and a second weight-reducing groove 3513 are also provided on the inner wall of the mounting hole 351 to reduce the weight of the transmission box 35. The first weight-reducing groove 3512 is formed between two reinforcing ribs 3511 located on the inner wall of the same mounting hole 351. The second weight-reducing groove 3513 is provided between the reinforcing rib 3511 and the inner wall of the mounting hole 351.

[0055] refer to Figure 1-2In some embodiments, a sub-beam 22 is provided on the main beam 21, and the sub-beam 22 is vertically arranged with the main beam 21. Specifically, the sub-beam 22 is welded with the main beam 21; the sub-beam 22 is configured as a groove, one side of the sub-beam 22 is connected to the solar panel 51, and the other side is connected to the main beam 21. The sub-beam 22 is provided to extend the installation length of the solar panel 51 in the direction perpendicular to the length of the main beam 21, thereby improving the utilization rate of the site and the power generation efficiency; a connecting frame 23 is sleeved on the main beam 21, and the inner wall of the connecting frame 23 is connected to the main beam 21. The side of the main beam 21 is matched, and a slot 231 is provided on the side of the connecting frame 23 close to the auxiliary beam 22. The side portion of the auxiliary beam 22 is inserted into the slot 231 to improve the stability of the auxiliary beam 22; two purlins 24 are symmetrically provided on the connecting frame 23, and the other end of the purlin 24 is connected to the auxiliary beam 22, so that the purlin 24, the auxiliary beam 22 and the connecting frame 23 form a right-angled triangle, which improves the strength and stability of the auxiliary beam 22 and prevents the solar energy from shaking when adjusting the angle; the transmission pipe 41 passes through the blank area between the right-angled triangles.

[0056] The above-described implementation methods do not constitute a limitation on the protection scope of the technical solution. Any modification, equivalent replacement and improvement made within the spirit and principle of the above-described implementation methods shall be included in the protection scope of the technical solution.

Claims

1. A flat single-axis multi-point drive mechanism with a main beam torque tube passing through it, characterized in that: include Column; A rotary reducer arranged on the column, the rotary reducer is driven by a motor, and the motor is controlled by a controller; A main beam passing through the slewing reducer, the main beam being driven to rotate by at least one slewing reducer; The rotary reducer at least comprises a mounting seat detachably mounted on the column, a fixing sleeve mounted on the mounting seat, a transmission box rotatably mounted on the fixing sleeve, and a power assembly for driving the transmission box to rotate relative to the fixing sleeve; The rotary reducer is also connected to a drive shaft, and both ends of the drive shaft extend outward from the inside of the rotary reducer, and a first connecting end and a second connecting end are respectively provided at both ends. The first connecting end is connected to the second connecting end on the adjacent rotary reducer through a transmission pipe to drive the action of the adjacent rotary reducer or maintain the synchronization of the actions of the adjacent rotary reducers; the drive shaft is rotatably connected to the transmission box; The transmission box is provided with a mounting hole for the main beam to pass through; the main beam is connected to the transmission box through a plurality of locking members, and the plurality of locking members are inserted between the inner wall of the mounting hole and the main beam from one side of the transmission box, and the locking members are in anti-rotation cooperation with the outer wall of the main beam and the inner wall of the mounting hole; The mounting hole has a taper, and the locking member is provided with a taper matching the mounting hole; The locking member is provided with at least two folded edge portions and a connecting portion connected to the folded edge portions, and the upper taper of the locking member is arranged outside the folded edge portions; There is an angle between the two folded edge portions, and the angle corresponds to the angle between the adjacent side edges of the main beam; The connecting portion is detachably connected to the transmission box. When the connecting portion is connected to the transmission box, the folded edge portion is inserted into the mounting hole, and the connection between adjacent folded edge portions corresponds to the edge of the mounting hole. A plurality of reinforcing ribs are provided on the inner wall of the mounting hole, and the outer edge of the folded edge is extruded and matched with the reinforcing ribs; The strength near the edge of the main beam is greater than the strength of the side of the main beam; Supports are symmetrically arranged on both sides of the column, one side of the support is connected to the column by fastening bolts, and the other side is flush with the top surface of the column to form an installation plane, and the rotary reducer is installed on the installation plane; A first strip hole is provided on one side of the mounting seat close to the support, and a fastening bolt passes through the first strip hole and is connected to the support; The mounting seat is provided with an extension portion along the length direction of the column, one side of the extension portion is in contact with the column, and a second strip hole is provided on the extension portion, and a fastening bolt portion passes through the second strip hole and is connected to the column.

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