A rotary reducer

Abstract

The present invention relates to the technical field of photovoltaic brackets, and specifically proposes a rotary reducer; it includes a reducer body, on which an output drum is installed for horizontal rotation driving; both ends of the output drum are fixed with expansion assemblies, and the two expansion assemblies are symmetrically arranged in the axial direction of the output drum; the rotary reducer body provided by the present invention is actually used as a mounting bracket for photovoltaic panels, and a plurality of photovoltaic panels can be circumferentially arranged and installed with a polygonal cover as a fixed basis, thereby improving space utilization and increasing the overall light-receiving area of ​​the photovoltaic panels. Through the rotation drive of the reducer body, the photovoltaic panels can obtain more uniform light at different times of the day, and the rotation can avoid the adhesion and accumulation of dust and debris on the panel surface, thereby maintaining long-term and efficient power generation efficiency; in addition, through the reasonable extension layout of the inner support frame, more photovoltaic panels can be installed accordingly, thereby obtaining the best power generation benefit.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic brackets, and specifically proposes a rotary reducer. Background Art

[0002] In the field of photovoltaic panel power generation, photovoltaic panels are generally installed on photovoltaic brackets assembled by welding steel plates, and most photovoltaic brackets are fixed and cannot be adjusted. In order to improve power generation efficiency, some photovoltaic brackets can adjust the inclination angle; but in general, most of the existing photovoltaic mounting brackets have the following problems: 1) Photovoltaic panels are basically installed one by one on inclined photovoltaic brackets. When adjacent rows of photovoltaic panels are installed close to each other, there are large shadows, which affect the power generation efficiency of the photovoltaic panels. When they are spread out, the space utilization rate is low. When space is limited, the effective light-receiving area of ​​the actually laid photovoltaic panels is greatly reduced.

[0003] 2) Photovoltaic panels are basically fixed on photovoltaic brackets, or the adjustment angle is limited, so the power generation efficiency of photovoltaic panels cannot be greatly improved.

[0004] 3) Photovoltaic panels are basically all installed in a tilted and flat manner, and dust and debris easily accumulate on the panel surface, which requires regular cleaning. If they are not cleaned promptly and effectively, the photovoltaic panels will not be able to maintain long-term stable and efficient photoelectric conversion efficiency.

[0005] In summary, most of the existing photovoltaic panel mounting brackets have the above problems, which comprehensively affect the working effect of the photovoltaic panel; therefore, the present invention provides a rotary reducer applied to a photovoltaic bracket. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a rotary reducer for solving the problems mentioned in the above background technology.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme to achieve it: a rotary reducer, including a reducer body, on which an output drum is installed for horizontal rotation driving; both ends of the output drum are fixed with extension assemblies for fixing and installing photovoltaic panels, and the two extension assemblies are arranged symmetrically in the axial direction of the output drum.

[0008] The expansion assembly includes an inner support frame, which includes multiple inner support frames distributed along the axial direction of the output drum, and the inner support frames are regular polygonal structures. The inner support frames adjacent to the output drum are fixed on the output drum; multiple folding links are hinged between two adjacent inner support frames; when the distance between two adjacent inner support frames is the largest, the folding links are in a horizontally expanded state; the folding links are equipped with locking components that keep them in a horizontally stretched state.

[0009] A plurality of polygonal covers are arranged on the inner support frame, and the polygonal covers and the inner support frame are regular polygonal tube structures that match each other; when the inner support frame is fully unfolded, the polygonal covers are mounted on two adjacent inner support frames, and the mounted polygonal covers enable the locking components to automatically lock the folding connecting rods, so that the folding connecting rods remain in a horizontal and straight state.

[0010] A plurality of circumferentially distributed tensioning assemblies are arranged outside the polygonal cover, and the plurality of tensioning assemblies are fixed to the end of the output drum. Each of the tensioning assemblies passes through each polygonal cover in turn and is detachably fixedly connected to each inner support frame.

[0011] Preferably, the folding connecting rod comprises two connecting rods whose one ends are hinged to two adjacent inner support frames in a one-to-one manner and a serial hinge block hinged between the other ends of the two connecting rods; the locking component is assembled on the serial hinge block; in the locked state, the two connecting rods remain horizontal and are fixed on the serial hinge block at the same time.

[0012] Preferably, the tensioning assembly includes a bridging rod horizontally fixed to the end of the output drum, and a plurality of pull rods distributed along the length of the rod are hinged on the bridging rod, and the plurality of pull rods are detachably connected to a plurality of inner support frames in a one-to-one correspondence.

[0013] Preferably, the serial hinge block is provided with a slide groove extending along the axial direction of the output rotating cylinder, and the serial hinge block is also provided with a guide hole extending along the radial direction of the output rotating cylinder, and the guide hole is connected to the slide groove; the locking component includes a lock shaft slidably installed in the guide hole, the end of the lock shaft facing away from the slide groove is a ball head structure, and the end of the lock shaft close to the slide groove is fixed with a spring sheet with an arc structure, and both ends of the spring sheet are connected with sliders, and the two sliders are slidably installed in the slide groove; the two connecting rods are provided with sockets at one end close to the serial hinge block; pins that fit into the sockets are fixed on the two sliders; when the polygonal cover is mounted on two adjacent inner support frames, the inner wall of the polygonal cover touches the lock shaft, so that the two pins are correspondingly inserted into the two sockets.

[0014] Preferably, both axial ends of the polygonal cover are provided with a plurality of avoidance notches, and the plurality of avoidance notches on a single side are arranged in one-to-one correspondence with a plurality of tensioning components; the pull rod member includes an inclined rod hinged at one end to a bridging rod, and the other end of the inclined rod is hinged with a hinged end, and a fixing screw is rotatably installed on the hinged end, and the fixing screw passes through the avoidance notches at corresponding positions and is threadedly connected to the inner support frame at the corresponding position.

[0015] Preferably, when the folding connecting rod is in a locked horizontally stretched state, the connecting rod and the serial hinge block both form inner supporting contact with the inner wall of the polygonal cover.

[0016] Preferably, a plurality of key slots corresponding to the positions of the plurality of folding connecting rods are provided on the outer frame surface of the inner support frame, and key slots are provided on the contact surfaces of the connecting rod and the serial hinge block with the inner support of the polygonal cover; a plurality of plug-in keys matching the plurality of key slots in the inner support frame are provided on the inner wall of the polygonal cover; the plug-in keys are simultaneously plugged into the slots at corresponding positions on the connecting rod, the serial hinge block and the inner support frame, and the plug-in keys are pressed into contact with the ball head end of the lock shaft.

[0017] Preferably, the fixing screw is provided with a pressing ring for pressing the outer wall of the polygonal cover.

[0018] Preferably, a reinforcing frame is fixed inside the inner support frame.

[0019] Preferably, the reducer body also includes a frame, on which at least one bearing disk is fixed, and the output drum is rotatably mounted on the frame via the bearing disk; a worm wheel is fixed on the output drum, and a worm is installed on the frame for horizontal rotation drive, and the worm is meshed with the worm wheel.

[0020] The above technical scheme has the following advantages or beneficial effects: the present invention provides a rotary reducer, which adopts the reducer body as the rotation driving basis, and uses the expansion assembly as the mounting bracket of the photovoltaic panel by symmetrically arranging the expansion assembly at the output end of the reducer body. The expansion assembly is composed of multiple modules such as the inner support frame, the polygonal cover and the tensioning component, which can realize rapid disassembly and assembly, and the inner support frame is used as the inner support installation skeleton of multiple polygonal covers to realize the rapid positioning and installation of the polygonal covers, and the locking structure design of the inner support frame itself makes it automatically locked after the polygonal cover is installed, and multiple photovoltaic panels can be installed in a circumferential layout with the polygonal cover as the fixed basis, thereby improving space utilization. The rate increases the overall light-receiving area of ​​the photovoltaic panel. Through the rotation drive of the reducer body, the photovoltaic panel can obtain more uniform light at different times of the day, and the rotation can prevent dust and debris from adhering to and accumulating on the panel surface, thereby maintaining long-term and efficient power generation efficiency. In addition, through the reasonable extension layout of the inner support frame, more photovoltaic panels can be installed to obtain the best power generation benefits. The inner support frame can be obliquely fixed by the tensioning assembly, and then the stability and support strength of the expansion assembly used to support the installation of photovoltaic panels are improved by the internal and external cooperation of the inner support frame and the tensioning assembly, thereby weakening the disadvantages of the cantilever beam structure of the expansion assembly itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention and its features, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts throughout the drawings, which are not drawn to scale, with emphasis on illustrating the subject matter of the present invention.

[0022] Figure 1It is a three-dimensional structural schematic diagram of a rotary reducer provided by the present invention.

[0023] Figure 2 It is a top view of a rotary reducer provided by the present invention.

[0024] Figure 3 yes Figure 2 Sectional view of AA.

[0025] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.

[0026] Figure 5 It is a front view of a rotary reducer provided by the present invention.

[0027] Figure 6 It is a three-dimensional cross-sectional view of the reducer body 1.

[0028] Figure 7 It is a three-dimensional structural diagram of the expansion assembly.

[0029] Figure 8 It is a three-dimensional structural diagram of the assembly of the tensioning component and the inner support frame.

[0030] Fig. 9 yes Figure 8 A partial enlarged view of point C in the middle.

[0031] Fig.10 It is a three-dimensional diagram of a polygonal cover.

[0032] Fig.11 It is a three-dimensional structural diagram of the tensioning component.

[0033] Fig.12 It is a structural schematic diagram of two adjacent inner support frames in a folded state.

[0034] In the figure: 1. reducer body; 11. frame; 12. bearing plate; 13. output drum; 131. worm gear; 132. flange; 14. worm; 2. expansion assembly; 3. inner support frame; 31. inner support frame; 311. reinforcement frame; 32. folding connecting rod; 321. connecting rod; 3211. socket; 322. serial hinge block; 3221. slide groove; 3222. guide hole; 323. locking component; 3231. lock shaft; 3232. spring sheet; 3233. slider; 3234. pin shaft; 4. polygonal cover; 41. plug-in key; 42. avoidance notch; 5. tensioning assembly; 51. pull rod; 511. inclined pull rod; 512. hinged end; 513. fixing screw; 5131. pressure ring; 52. bridge rod. DETAILED DESCRIPTION

[0035] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0036] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, a rotary reducer includes a reducer body 1, and the reducer body 1 includes a frame 11. Two bearing plates 12 are fixed on the frame 11 by bolts. The bearing plates 12 have bearings. An output drum 13 is fixed horizontally between the rotating inner rings of the bearings of the two bearing plates 12 by screws, that is, the output drum 13 is rotatably mounted on the frame 11 through the two bearing plates 12; a worm wheel is welded on the output drum 13, and a worm 14 is horizontally rotatably mounted on the frame 11. The worm 14 is meshed with a worm wheel 131. The worm 14 can be driven by a high-power motor. The high-power motor can be horizontally mounted on the side wall of the frame 11, and one end of the worm 14 is fixed on the output shaft of the high-power motor. It should be noted that the high-power motor is not shown in the drawings. After the high-power motor is started, it drives the worm 14 to rotate, and the worm 14 drives the worm wheel 131 with a large diameter and a large number of gears to achieve a reduced output, so that the output drum 13 can rotate steadily and uniformly at the required low speed.

[0038] like Figure 1 , Figure 2 and Figure 6 As shown, the two ends of the output drum 13 are fixed with expansion assemblies 2, and the two expansion assemblies 2 are symmetrically arranged in the axial direction of the output drum 13, so that the loads at the two ends of the output drum 13 are balanced. The reducer body 1 is mainly used to drive the two expansion assemblies 2 located at the ends of the output drum 13 to rotate smoothly at a low speed, and the expansion assemblies 2 are used to fix and install photovoltaic panels. Therefore, in the present invention, the rotary reducer is essentially a rotatable photovoltaic bracket.

[0039] like Figure 3 , Figure 7 and Figure 8As shown, the expansion assembly 2 includes an inner support frame 3, and the inner support frame 3 includes a plurality of inner support frames 31 distributed along the axial direction of the output drum 13, and the number of the inner support frames 31 is reasonably set according to actual conditions; the inner support frame 31 is in a regular hexagonal structure, and in order to improve the supporting strength of the inner support frame 31 itself, a reinforcing skeleton 311 is welded inside the frame of the inner support frame 31, and the reinforcing skeleton 311 is in a multi-rod structure uniformly dispersed from the center of the inner support frame 31 to the surrounding areas, and the inner support frame 31 adjacent to the output drum 13 is fixed in the drum of the output drum 13 by a welded fixing plate; three folding connecting rods 32 are hinged between two adjacent inner support frames 31; the three folding connecting rods 32 are alternately distributed and hinged at the three frame edges of the inner support frame 31, and are centered relative to the length of the frame edge.

[0040] like Figure 3 , Figure 7 , Figure 8 and Fig.12 As shown, the folding connecting rod 32 includes two connecting rods 321 whose one ends are hinged to two adjacent inner support frames 31 in a one-to-one correspondence, and a series hinge block 322 hinged between the other ends of the two connecting rods 321; through the setting of the series hinge block 322, the two connecting rods 321 can be folded or unfolded, and the inner support frames 31 can be brought together by folding the connecting rods 321, completing the folding and storage of the inner support frame 3, making it easier to carry the inner support frame 3, and also reducing the space occupied by transportation. When the two connecting rods 321 are unfolded, in order to achieve locking, a locking component 323 is also installed on the series hinge block 322; in the locked state, the folding connecting rod 32 is in a horizontal unfolded state, and the distance between the two adjacent inner support frames 31 is the largest, and the two connecting rods 321 remain horizontal and are fixed on the series hinge block 322 at the same time.

[0041] like Figure 3 , Figure 4 , Figure 7 , Figure 8 and Fig. 9 As shown, the serial hinge block 322 is provided with a slide groove 3221 extending along the axial direction of the output rotating cylinder 13, and the serial hinge block 322 is also provided with a guide hole 3222 extending along the radial direction of the output rotating cylinder 13, and the guide hole 3222 is connected with the slide groove 3221; the locking component 323 includes a lock shaft 3231 slidably installed in the guide hole 3222, and the end of the lock shaft 3231 facing away from the slide groove 3221 is a ball head structure, and the end of the lock shaft 3231 close to the slide groove 3221 is welded with an arc joint The spring sheet 3232 has a structure, and sliders 3233 are welded at both ends of the spring sheet 3232. The two sliders 3233 are slidably installed in the slide groove 3221; the two connecting rods 321 are provided with a socket 3211 at one end close to the serial hinge block 322; the two sliders 3233 are welded with a pin shaft 3234 that fits into the socket 3211; when the two connecting rods 321 are unfolded to a horizontal state, the pin shaft 3234 is aligned with the socket 3211 in the connecting rod 321 on the same side.

[0042] like Figure 3 , Figure 7 and Fig.10 As shown, a plurality of polygonal covers 4 are arranged on the inner support frame 3, and the polygonal covers 4 and the inner support frame 31 are in a matching regular hexagonal tube structure; when the inner support frame 3 is fully unfolded, the polygonal covers 4 are mounted on two adjacent inner support frames 31; the number of polygonal covers 4 mounted on the one side extension assembly 2 is one less than the actual number of inner support frames 31. When the polygonal covers 4 are mounted, the inner support frame 3 can be unfolded one by one in the order from near to far from the reducer body 1. Specifically, when the first polygonal cover 4 is mounted, the second inner support frame 31 in its direction is first unfolded, so that the three folding connecting rods 32 between the first and second inner support frames 31 are in a horizontally stretched state, and then the polygonal cover 4 is mounted on the first and second inner support frames 31. After mounting, the inner wall of the polygonal cover 4 abuts against the ball head end of the lock shaft 3231, and the lock shaft 3231 shrinks into the guide hole 3222, so that The spring sheet 3232 is deformed and the curvature becomes smaller. The two ends of the spring sheet 3232 push the two sliders 3233 towards the direction close to the connecting rod 321 on the same side, so that the two pins 3234 are automatically inserted into the sockets 3211 of the two connecting rods 321, and then the two connecting rods 321 are fixed to the serial hinge block 322 through the locking component 323. When the polygonal cover 4 is in the assembled state, the folding connecting rod 32 is always in the locked state and remains horizontally straight. Then, the subsequent inner support frames 31 are unfolded one by one, and the assembly of the polygonal cover 4 is completed one by one. It should be noted that when the folding connecting rod 32 is in a locked horizontally stretched state, the connecting rod 321 and the serial hinge block 322 both form an internal support contact with the inner wall of the polygonal cover 4. For each polygonal cover 4, they are all inserted between two adjacent internal support frames 31. Therefore, two adjacent internal support frames 31 and three folding connecting rods 32 together constitute the internal support skeleton of a single polygonal cover 4. Among them, the two internal support frames 31 are distributed in the polygonal cover 4 near the ports on both sides to form a circumferential skeleton, and the three folding connecting rods 32 constitute an axial skeleton. The layout and distribution are reasonable, and the strength and stability of the internal support of the polygonal cover 4 are greatly guaranteed.

[0043] like Figure 5 , Fig. 9 and Fig.10As shown, in order to further improve the stability of the polygonal cover 4 when fitted on the inner support frame 3, three key slots corresponding to the positions of the three folding connecting rods 32 are provided on the outer frame surface of the inner support frame 31, and key slots are also provided on the inner support contact surfaces of the connecting rod 321 and the serial hinge block 322 with the polygonal cover 4. The key slots provided on the inner support frame 31, the connecting rod 321 and the serial hinge block 322 have the same size, and the key slots at corresponding positions in the axial perspective of the output drum 13 overlap in sequence; three plug-in keys 41 matching the three key slots in the inner support frame 31 are provided on the inner wall of the polygonal cover 4; when the polygonal cover 4 is completed, the plug-in keys 41 are simultaneously inserted into the slots at corresponding positions on the connecting rod 321, the serial hinge block 322 and the inner support frame 31, and the polygonal cover 4 is pressed and contacted with the ball head end of the lock shaft 3231 through the plug-in keys 41.

[0044] The polygonal cover 4 and the inner support frame 3 adopt a quick plug-in assembly design, which makes the polygonal cover 4 easy to transport independently, and can quickly complete the assembly between the polygonal cover 4 and the inner support frame 3, and is also convenient for subsequent disassembly and assembly; the design that the inner support frame 3 can be simultaneously unfolded and locked through the polygonal cover 4 set avoids excessive manual locking operations, and also improves the convenience and efficiency of assembly. In the present invention, photovoltaic panels can be installed and fixed on the six end faces outside the polygonal cover 4, so that the photovoltaic panels can be evenly distributed on the circumference of the output drum 13, which changes the existing inclined bracket structure for installing photovoltaic panels. The circumferential layout reduces the shadow shielding between adjacent photovoltaic panels, greatly increases the overall light-receiving area of ​​the photovoltaic panels in the same space, increases the light-receiving area, and greatly improves the space utilization rate; and in actual operation, the reduction gear body 1 drives the expansion assembly 2 to rotate the photovoltaic panels, so that each photovoltaic panel can obtain more uniform light at different time periods of the day with equal probability, which can improve the overall power generation efficiency; in addition, the rotational motion can help automatically remove dust, debris and snow on the surface of the photovoltaic panels, thereby maintaining the long-term stable photoelectric conversion efficiency of the photovoltaic panels.

[0045] like Figure 1 , Figure 3 , Figure 7 , Figure 8 and Fig.11As shown, since the reducer body 1 consumes electricity during operation, the power consumption increases when the load increases. In the present invention, by expanding the layout of the assembly 2, more photovoltaic panels can be reasonably installed, thereby ensuring a larger total power generation amount, and in addition to the power consumption of the reducer body 1 itself, a better power generation margin can be obtained. Specifically, the overall inner support length of the inner support frame 3 can be reasonably extended, so that more polygonal covers 4 can be installed; but the longer extended inner support frame 3 forms a cantilever beam structure relative to the reducer body 1. In order to further improve the overall stability of the expansion assembly 2, three circumferentially distributed tensioning assemblies 5 are arranged outside the polygonal cover 4, and the three tensioning assemblies 5 are evenly and alternately distributed relative to the three folding connecting rods 32 between the two inner support frames 31; a flange 132 is arranged at the end of the output drum 13, and the tensioning assembly 5 includes a bridging rod 52 horizontally fixed to the flange 132 by bolts. For ease of installation, the bolt holes on the flange 132 for fixing the bridging rod 52 are extended holes; a plurality of bridging rods 52 are hinged on the bridging rod 52 along The tie rods 51 are distributed in the length direction of the rod, and the number of the tie rods 51 is the same as the number of the inner support frames 31 in a single inner support frame 3; three avoidance notches 42 are provided at both axial ends of the polygonal cover 4, and the three avoidance notches 42 at the single side end are arranged in a one-to-one correspondence with the three tensioning components 5; the tie rod 51 includes an oblique tie rod 511 hinged at one end on the bridging rod 52, and the other end of the oblique tie rod 511 is hinged with a hinged end 512, and a fixing screw 513 is rotatably installed on the hinged end 512, and a fixing screw 513 is added to the inner support frame 31. The fixing screw 513 has a screw hole that matches with the fixing screw 513. The fixing screw 513 passes through the avoidance notch 42 at the corresponding position and is threadedly connected to the inner support frame 31 at the corresponding position. The fixing screw 513 is provided with a pressing ring 5131 for pressing the outer wall of the polygonal cover 4. The tensioning assembly 5 is assembled. First, the fixing screws 513 in the plurality of inclined tie rods 511 are tightened on the plurality of inner support frames 31 in sequence, and tightened until the pressing ring 5131 and the polygonal cover 4 are pressed tightly, and finally the bridge rod 52 is fixed on the flange 132. In this embodiment, when the tensioning assembly 5 is assembled, the inclined tie rod 511 is tilted toward the direction close to the reducer body 1, thereby generating an oblique pulling force biased toward the reducer body 1.

[0046] In the present invention, the inner support frame 3 serves as an inner support mounting frame for multiple polygonal covers 4, providing stable inner support, while multiple tensioning components 5 provide oblique tension to the inner support frame 3, indirectly providing outer support to the polygonal covers 4, further improving the stability of the inner support frame 3, and weakening the inherent defect of the inner support frame 3 constituting a cantilever beam. In addition, the inner support frame 3 and the tensioning components 5 constitute an integral mounting bracket that cooperates inside and outside, which, while ensuring the support strength, is more lightweight compared to the integrally welded photovoltaic bracket, thereby reducing the load consumption of the reducer body 1.

[0047] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0049] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A rotary reducer, comprising a reducer body (1), wherein an output drum (13) is mounted on the reducer body (1) in a horizontally rotatable manner; characterized in that: An extension assembly (2) for fixing and installing a photovoltaic panel is fixed to both ends of the output drum (13), and the two extension assemblies (2) are symmetrically arranged in the axial direction of the output drum (13); wherein: The expansion assembly (2) comprises an inner support frame (3), the inner support frame (3) comprising a plurality of inner support frames (31) distributed along the axial direction of the output rotary drum (13), the inner support frames (31) being in a regular polygonal structure, the inner support frames (31) adjacent to the output rotary drum (13) being fixed to the output rotary drum (13); a folding connecting rod (32) being hinged between two adjacent inner support frames (31); when the distance between the two adjacent inner support frames (31) is at a maximum, the folding connecting rod (32) is in a horizontally unfolded state; the folding connecting rod (32) is equipped with a locking component (323) for maintaining the folding connecting rod in a horizontally stretched state; A plurality of polygonal covers (4) are arranged on the inner support frame (3), and the polygonal covers (4) and the inner support frame (31) are in a matching regular polygonal tube structure; when the inner support frame (3) is fully unfolded, the polygonal covers (4) are mounted on two adjacent inner support frames (31), and the mounted polygonal covers (4) enable the locking component (323) to automatically lock the folding connecting rod (32), so that the folding connecting rod (32) remains in a horizontally stretched state; A plurality of circumferentially distributed tensioning assemblies (5) are arranged outside the polygonal cover (4), the plurality of tensioning assemblies (5) are fixed to the end of the output drum (13), and each of the tensioning assemblies (5) passes through each polygonal cover (4) in turn and is detachably fixedly connected to each inner support frame (31); The folding connecting rod (32) comprises two connecting rods (321) whose one ends are hinged to two adjacent inner support frames (31) in a one-to-one correspondence, and a serial hinge block (322) hinged between the other ends of the two connecting rods (321); the locking component (323) is assembled on the serial hinge block (322); in a locked state, the two connecting rods (321) remain horizontal and are fixed on the serial hinge block (322) at the same time.

2. A rotary reducer according to claim 1, characterized in that: The tensioning assembly (5) comprises a bridging rod (52) horizontally fixed to the end of the output drum (13), and a plurality of pull rods (51) are hingedly connected to the bridging rod (52) and distributed along the length of the rod. The plurality of pull rods (51) are detachably connected to a plurality of inner support frames (31) in a one-to-one correspondence.

3. A rotary reducer according to claim 1, characterized in that: The serial hinge block (322) is provided with a slide groove (3221) extending axially along the output rotating cylinder (13); the serial hinge block (322) is also provided with a guide hole (3222) extending radially along the output rotating cylinder (13); the guide hole (3222) is in communication with the slide groove (3221); the locking component (323) comprises a lock shaft (3231) slidably mounted in the guide hole (3222); the end of the lock shaft (3231) facing away from the slide groove (3221) is a ball head structure; the end of the lock shaft (3231) close to the slide groove (3221) is fixed with a spring sheet (3232) with an arc structure; Both ends of the spring sheet (3232) are connected to sliders (3233), and the two sliders (3233) are slidably mounted in the slide grooves (3221); one end of the two connecting rods (321) close to the serial hinge block (322) is provided with a plug hole (3211); pins (3234) that are matched and inserted into the plug holes (3211) are fixed on the two sliders (3233); when the polygonal cover (4) is mounted on two adjacent inner support frames (31), the inner wall of the polygonal cover (4) contacts the locking shaft (3231), so that the two pins (3234) are correspondingly inserted into the two plug holes (3211).

4. A rotary reducer according to claim 2, characterized in that: The polygonal cover (4) is provided with a plurality of avoidance notches (42) at both axial ends, and the plurality of avoidance notches (42) at the single end are arranged in a one-to-one correspondence with the plurality of tensioning components (5); the pull rod (51) comprises an inclined rod (511) with one end hinged on the bridging rod (52), the other end of the inclined rod (511) is hinged with a hinged end (512), a fixing screw (513) is rotatably mounted on the hinged end (512), and the fixing screw (513) passes through the avoidance notches (42) at the corresponding positions and is threadedly connected to the inner support frame (31) at the corresponding positions.

5. A rotary reducer according to claim 3, characterized in that: When the folding connecting rod (32) is in a locked horizontally stretched state, the connecting rod (321) and the serial hinge block (322) both form inner support contact with the inner wall of the polygonal cover (4).

6. A rotary reducer according to claim 5, characterized in that: The outer frame surface of the inner support frame (31) is provided with a plurality of key slots corresponding to the positions of the plurality of folding connecting rods (32); the inner support contact surfaces of the connecting rod (321) and the serial hinge block (322) and the polygonal cover (4) are provided with key slots; the inner wall of the polygonal cover (4) is provided with a plurality of plug-in keys (41) matching the plurality of key slots in the inner support frame (31); the plug-in keys (41) are simultaneously plugged into slots at corresponding positions on the connecting rod (321), the serial hinge block (322) and the inner support frame (31), and the plug-in keys (41) are in tight contact with the ball end of the lock shaft (3231).

7. A rotary reducer according to claim 4, characterized in that: The fixing screw (513) is provided with a pressing ring (5131) for pressing the outer wall of the polygonal cover (4).

8. A rotary reducer according to claim 1, characterized in that: A reinforcement frame (311) is fixed inside the inner support frame (31).

9. A rotary reducer according to claim 1, characterized in that: The reducer body (1) further comprises a frame (11), on which at least one bearing disk (12) is fixed, and the output rotating cylinder (13) is rotatably mounted on the frame (11) via the bearing disk (12); a worm wheel (131) is fixed on the output rotating cylinder (13), and a worm (14) is mounted on the frame (11) in a horizontally rotatable manner, and the worm (14) is meshed with the worm wheel (131).

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