Heliostat rotation supporting mechanism, heliostat rotation speed reducer and heliostat

Abstract

The utility model provides a heliostat rotation supporting mechanism, a heliostat rotation speed reducer and a heliostat, and relates to the technical field of heliostats, the heliostat rotation supporting mechanism comprises a mounting base and a rotation shaft, the bottom end of the mounting base is fixed to a heliostat stand column, a mounting cavity extending in the vertical direction is defined in the mounting base, and the rotation shaft is fixed to the mounting base; the rotating shaft is coaxially inserted into the mounting cavity, at least two ball bearings are arranged between the rotating shaft and the mounting cavity so that the rotating shaft can rotate around the axis of the rotating shaft in the mounting cavity, the upper end of the rotating shaft is used for mounting a heliostat, and a thrust bearing is arranged between the bottom end of the rotating shaft and the bottom end of the mounting base. According to the heliostat rotation supporting mechanism, it can be ensured that the rotation shaft is reliably supported in the radial direction and the axial direction, faults are not likely to occur, the problem that overturning rigidity is reduced after long-time operation is avoided, and then the high-precision sun tracking operation requirement of a heliostat is met.

Description

Technical Field

[0001] The present disclosure relates to the technical field of heliostats, and in particular to a heliostat slewing support mechanism, a heliostat slewing reducer, and a heliostat. Background Art

[0002] A tower solar power system primarily consists of a large number of heliostats (also known as a heliostat cluster) and a central solar collector mounted on a tall tower. The heliostats rotate on two axes to automatically track the sun and reflect sunlight onto a central solar collector. The collector converts the concentrated solar radiation into heat, which is then transferred to a thermal cycle system to generate steam, which drives a turbine and generator to generate electricity.

[0003] In the prior art, the angle of the heliostat's reflective surface is typically adjusted using a slewing reducer. To ensure high-precision tracking of the heliostat under operating conditions, the slewing reducer must possess not only high transmission accuracy but also high structural rigidity to ensure operational stability under wind loads. The slewing support mechanism of existing slewing reducers primarily utilizes the torque of ball bearings for support, which can reduce its tilting rigidity over long periods of operation. This reduced tilting rigidity increases the heliostat's wobbling amplitude under wind loads, making it impossible to achieve high-precision tracking. Furthermore, the slewing support mechanism's service life is shortened, resulting in high maintenance and replacement costs, hindering the overall efficiency of tower-type solar power generation systems. Utility Model Content

[0004] A technical problem to be solved by the present disclosure is that the existing slewing support mechanism has a problem of reduced overturning rigidity after long-term operation, resulting in an inability to meet the high-precision sun tracking operation of the heliostat.

[0005] To solve the above technical problems, the present disclosure provides a heliostat slewing support mechanism, comprising:

[0006] A mounting seat, the bottom end of which is fixed to the heliostat column, and a mounting cavity extending in a vertical direction is defined in the mounting seat; and

[0007] A rotary shaft is coaxially inserted into the mounting cavity, with at least two ball bearings disposed between the rotary shaft and the mounting cavity to enable the rotary shaft to rotate around its own axis within the mounting cavity, and an upper end of the rotary shaft is used to mount the heliostat;

[0008] Wherein, a thrust bearing is arranged between the bottom end of the rotary shaft and the bottom end of the mounting seat.

[0009] In some embodiments, a first step portion is provided on the inner wall of the bottom end of the mounting cavity, and a second step portion opposite to the first step portion is provided on the outer surface of the rotating shaft. The bottom of the thrust bearing is pressed on the first step portion, and the top of the thrust bearing abuts against the second step portion.

[0010] In some embodiments, the rotary shaft is rotatably arranged in the mounting cavity through a first ball bearing and a second ball bearing arranged sequentially from bottom to top.

[0011] In some embodiments, the outer surface of the rotating shaft is provided with a protrusion extending outward, and the upper and lower ends of the protrusion are respectively formed as a first step surface and a second step surface, and a third step portion opposite to the second step surface is provided on the inner wall of the mounting cavity. The upper and lower ends of the first ball bearing are respectively abutted on the second step surface and the third step portion, and the lower end of the second ball bearing is abutted on the first step surface. The upper end of the mounting seat is provided with a bearing pressure cover for tightening and fixing the upper end of the second ball bearing.

[0012] In some embodiments, a cylindrical spacer is provided between the rotary shaft and the inner wall of the mounting cavity, the lower end of the cylindrical spacer abuts against the upper end of the first ball bearing, and the upper end of the cylindrical spacer abuts against the lower end of the second ball bearing.

[0013] In some embodiments, a connecting hole is provided on the cylindrical spacer for connecting the installation cavities inside and outside the cylindrical spacer.

[0014] In some embodiments, a grease nipple is provided on the mounting seat for injecting lubricating oil into the mounting cavity.

[0015] In some embodiments, a plurality of lifting ears are provided on the outer surface of the mounting seat, and the plurality of lifting ears are spaced apart along the circumference of the mounting seat.

[0016] In some embodiments, a transition piece is provided at the upper end of the rotary shaft, and the transition piece is used to install the heliostat.

[0017] In some embodiments, the rotary shaft is a hollow tubular structure, and the transition connector is provided with a connecting pipe extending downward, and the connecting pipe is coaxially inserted into the tubular cavity of the rotary shaft.

[0018] The disclosed embodiment further provides a heliostat rotation reducer, comprising a drive module and the above-mentioned heliostat rotation support mechanism, wherein the drive module is used to drive the rotation shaft to rotate around its own axis.

[0019] In some embodiments, the driving module includes a servo driving device disposed on an outer surface of the mounting seat, and an output shaft of the servo driving device is transmission-connected to the rotary shaft to drive the rotary shaft to rotate around its own axis.

[0020] In some embodiments, a driving gear is provided on the output shaft of the servo drive device, and a coaxially fixed driven gear is provided on the rotary shaft, and the driven gear is meshed with the driving gear.

[0021] In some embodiments, a protective cover is provided on the outside of the driving gear, a through hole is provided on the upper end of the protective cover for the upper end of the rotating shaft to pass through, and the lower end of the protective cover is connected and fixed to the outer surface of the mounting seat.

[0022] An embodiment of the present disclosure further provides a heliostat, comprising the above-mentioned heliostat rotation reducer, wherein the heliostat rotation reducer is used to adjust the rotation angle of the reflecting surface in the heliostat.

[0023] Through the above technical solution, the heliostat slewing support mechanism provided by the present disclosure enables the slewing shaft to rotate about its own axis within the mounting cavity of the mounting seat via at least two ball bearings. The bottom end of the slewing shaft is mounted to the bottom end of the mounting seat via a thrust bearing. The thrust bearing can withstand the axial force exerted on the slewing shaft during rotation, thereby preventing the axial force from acting on the ball bearings that primarily bear radial force, causing a reduction in overturning rigidity after long-term operation.

[0024] The heliostat slewing support mechanism provided by the present disclosure can ensure that the slewing axis is reliably supported in both radial and axial directions, is not prone to failure, and does not cause the problem of reduced overturning rigidity after long-term operation, thereby meeting the high-precision sun tracking operation requirements of the heliostat. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 This is a schematic structural diagram of a heliostat slewing support mechanism disclosed in an embodiment of the present disclosure;

[0027] Figure 2 This is a schematic structural diagram of a heliostat rotary support mechanism disclosed in an embodiment of the present disclosure, omitting the mounting seat and part of the protective cover;

[0028] Figure 3 is a cross-sectional view of a heliostat rotary support mechanism disclosed in an embodiment of the present disclosure;

[0029] Figure 4 It is an exploded view of a heliostat slewing support mechanism disclosed in an embodiment of the present disclosure.

[0030] Description of reference numerals:

[0031] 1. Heliostat column; 100. Mounting seat; 110. Mounting cavity; 111. First step; 112. Third step; 120. Bearing cover; 130. Column spacer; 131. Connecting hole; 140. Oiling nozzle; 150. Lifting ear; 160. Support rib; 170. Flange mounting plate; 200. Rotating shaft; 201. Third threaded hole; 210. Second step; 220. Protrusion; 221. First step surface; 222. Second step surface; 230. Driven gear; 300. Ball bearing; 310. First ball bearing; 320. Second ball bearing; 400. Thrust bearing; 500. Transition connector; 501. First threaded hole; 502. Second threaded hole; 510. Connecting pipe; 600. Servo drive; 610. Driving gear; 620. Protective cover; 621. Through hole. DETAILED DESCRIPTION

[0032] The following embodiments of the present disclosure are further described in detail with reference to the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are intended to illustrate the principles of the present disclosure, but are not intended to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but rather includes all technical solutions within the scope of the claims.

[0033] The present disclosure provides these embodiments in order to make this disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values ​​set forth in these embodiments should be interpreted as merely exemplary, and not as limiting.

[0034] It should be noted that, in the description of this disclosure, unless otherwise specified, "plurality" means greater than or equal to two; terms such as "upper," "lower," "left," "right," "inner," and "outer" indicating directions or positional relationships are intended solely to facilitate and simplify the description of this disclosure, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0035] In addition, the terms "first," "second," and similar terms used in this disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different parts. "Perpendicular" does not mean perpendicular in the strict sense, but rather means within the tolerance range. "Parallel" does not mean parallel in the strict sense, but rather means within the tolerance range. "Include" or "comprising" and similar terms mean that the elements preceding the term include the elements listed after the term, and do not exclude the possibility of also including other elements.

[0036] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this disclosure depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intervening device between the specific device and the first or second device.

[0037] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.

[0038] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0039] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the present disclosure provides a heliostat slewing support mechanism, comprising a mounting base 100 and a slewing shaft 200. The bottom end of the mounting base 100 is fixed to the heliostat column 1, and a mounting cavity 110 extending in a vertical direction is defined in the mounting base 100. The slewing shaft 200 is coaxially inserted into the mounting cavity 110. At least two ball bearings 300 are provided between the slewing shaft 200 and the mounting cavity 110 to enable the slewing shaft 200 to rotate about its own axis within the mounting cavity 110. The upper end of the slewing shaft 200 is used to mount the heliostat. A thrust bearing 400 is provided between the bottom end of the slewing shaft 200 and the bottom end of the mounting base 100.

[0040] In the technical solution provided in the present disclosure, the rotating shaft 200 is able to rotate around its own axis in the mounting cavity 110 of the mounting seat 100 through at least two ball bearings 300, and the bottom end of the rotating shaft 200 is installed to the bottom end of the mounting seat 100 through a thrust bearing 400. The thrust bearing 400 can withstand the axial force exerted on the rotating shaft 200 during the rotation process, thereby avoiding the axial force acting on the ball bearing 300 that mainly bears radial force, resulting in the problem of reduced overturning rigidity after long-term operation.

[0041] The heliostat slewing support mechanism provided by the present disclosure can ensure that the slewing shaft 200 is reliably supported in both radial and axial directions, is not prone to failure, and does not cause the problem of reduced overturning rigidity after long-term operation, thereby meeting the high-precision sun tracking operation requirements of the heliostat.

[0042] In the embodiments of the present disclosure, the thrust bearing 400 can be installed between the bottom end of the rotating shaft 200 and the bottom end of the mounting base 100 in any appropriate manner. In some embodiments, a first step 111 is provided on the inner wall of the bottom end of the mounting cavity 110, and a second step 210 is provided on the outer surface of the rotating shaft 200, opposite to the first step 111. The bottom of the thrust bearing 400 bears pressure on the first step 111, and the top of the thrust bearing 400 abuts against the second step 210.

[0043] In the present disclosure, at least two spaced ball bearings 300 are arranged between the outer surface of the rotating shaft 200 and the inner wall of the mounting cavity 110 to enable the rotating shaft 200 to rotate around its own axis. In some embodiments, the rotating shaft 200 is rotatably arranged in the mounting cavity 110 through a first ball bearing 310 and a second ball bearing 320 arranged in sequence from bottom to top.

[0044] Combine Figure 3 As shown, in some embodiments, the outer surface of the rotating shaft 200 is provided with a protrusion 220 extending outward, and the upper and lower ends of the protrusion 220 are respectively formed as a first step surface 221 and a second step surface 222, and the inner wall of the mounting cavity 110 is provided with a third step portion 112 opposite to the second step surface 222, and the upper and lower ends of the first ball bearing 310 are respectively abutted on the second step surface 222 and the third step portion 112, and the lower end of the second ball bearing 320 is abutted on the first step surface 221, and the upper end of the mounting seat 100 is provided with a bearing cover 120 for pressing and fixing the upper end of the second ball bearing 320.

[0045] In the embodiment of the present disclosure, a convex portion 220 is provided on the outer surface of the rotating shaft 200 to form a first step surface 221 at the upper end and a second step surface 222 at the lower end, which cooperates with the third step portion 112 provided on the inner wall of the mounting cavity 110 and the bearing cover 120 additionally fixed to the upper end of the mounting seat 100, thereby effectively ensuring the fixing effect of the first ball bearing 310 and the second ball bearing 320, and providing a stable rotation system and stable radial support force for the rotation of the rotating shaft 200 around its own axis; and the cooperation between the second step surface 222 and the third step portion 112, as well as the cooperation between the first step surface 221 and the bearing cover 120 can also limit the first ball bearing 310 and the second ball bearing 320 in the axial direction, respectively, thereby greatly improving the rigidity and anti-overturning moment of the entire rotating support mechanism. Even after long-term operation, the rotating support mechanism provided by the present disclosure does not have the problem of reduced overturning rigidity, thereby meeting the high-precision sun tracking operation requirements of the heliostat.

[0046] In some embodiments, in order to further improve the stability of the first ball bearing 310 and the second ball bearing 320 during operation, a cylindrical spacer 130 is arranged between the rotating shaft 200 and the inner wall of the mounting cavity 110, and the lower end of the cylindrical spacer 130 abuts against the upper end of the first ball bearing 310, and the upper end of the cylindrical spacer 130 abuts against the lower end of the second ball bearing 320.

[0047] It should be noted that in the embodiments of the present disclosure, lubricating oil needs to be added to the mounting cavity 110 to ensure stable lubrication of the entire slewing support system. To ensure that the lubricating oil can be moved to the desired location, in some embodiments, the cylindrical spacer 130 is provided with a connecting hole 131 for connecting the mounting cavity 110 inside and outside the cylindrical spacer 130. In this way, the lubricating oil can enter the mounting cavity 110 inside the cylindrical spacer 130 through the connecting hole 131.

[0048] In some embodiments, the mounting base 100 is provided with a grease nipple 140 for injecting lubricating oil into the mounting cavity 110. It is understood that in the embodiments of the present disclosure, lubricating oil is added to the interior of the mounting cavity 110 that needs lubrication through the grease nipple 140 to achieve stable lubrication of the entire slewing support mechanism.

[0049] In some embodiments, the outer surface of the mounting base 100 is provided with a plurality of lifting lugs 150, which are spaced apart along the circumference of the mounting base 100. The plurality of lifting lugs 150 provide lifting points, facilitating on-site installation, disassembly, and maintenance of the heliostat slewing support mechanism.

[0050] In some embodiments, a transition piece 500 is provided at the upper end of the rotating shaft 200. This transition piece 500 is used to mount the heliostat. It will be appreciated that, in the embodiments disclosed herein, the provision of the transition piece 500 facilitates the installation and arrangement of the heliostat's slewing support mechanism. For example, the transition piece 500 is provided with a plurality of first threaded holes 501 for connection to the heliostat's lower support flange. These first threaded holes 501 are circumferentially spaced and extend vertically through the transition piece 500.

[0051] In some embodiments, the rotary shaft 200 is a hollow tubular structure, and the transition piece 500 is provided with a downwardly extending connecting pipe 510, which is coaxially inserted into the tubular cavity of the rotary shaft 200. It is understood that by providing the connecting pipe 510, when installing the transition piece 500, the connecting pipe 510 is first inserted into the tubular cavity of the rotary shaft 200 to achieve pre-fixation of the transition piece 500, and then the transition piece 500 is slightly rotated so that the second threaded hole 502 thereon is aligned with the third threaded hole 201 provided at the top end of the rotary shaft 200, so that the transition piece 500 and the rotary shaft 200 can be locked and fixed by bolts. In other words, the provision of the connecting pipe 510 can facilitate the installation and fixation of the transition piece 500.

[0052] The present disclosure further provides a heliostat rotation reducer, which includes a driving module and the above-mentioned heliostat rotation support mechanism, wherein the driving module is used to drive the rotation shaft 200 to rotate around its own axis.

[0053] In some embodiments, the driving module includes a servo driving device 600 disposed on the outer surface of the mounting base 100 , and an output shaft of the servo driving device 600 is transmission-connected to the rotary shaft 200 to drive the rotary shaft 200 to rotate around its own axis.

[0054] In an embodiment of the present disclosure, the servo drive device 600 can be fixed on the outer surface of the mounting base 100 in any appropriate structural form. In some embodiments, two support ribs 160 are provided on the outer surface of the mounting base 100. The two support ribs 160 extend in the vertical direction respectively and are parallel and spaced apart in the circumferential direction of the mounting base 100. A flange mounting plate 170 is provided between the upper ends of the two support ribs 160. The servo drive device 600 is installed between the two support ribs 160 and the output end of the servo drive device 600 passes through the flange mounting plate 170.

[0055] It will be appreciated that in the embodiments of the present disclosure, the output shaft of the servo drive device 600 may utilize any suitable method to transmit power to the rotary shaft 200, thereby enabling the rotary shaft 200 to rotate about its own axis. For example, a chain sprocket, a timing belt, a crank connecting rod, or any other suitable transmission mechanism may be used. In some embodiments, a driving gear 610 is disposed on the output shaft of the servo drive device 600, and a coaxially fixed driven gear 230 is disposed on the rotary shaft 200, with the driven gear 230 meshing with the driving gear 610.

[0056] In the embodiment of the present disclosure, the mutual engagement of the driving gear 610 and the driven gear 230 can ensure that the driving module can accurately control the angular position of the rotating shaft 200, and the gear transmission scheme can also achieve smooth transmission and precise positioning control.

[0057] In some embodiments, a protective cover 620 is provided on the exterior of the driving gear 610. The upper end of the protective cover 620 is provided with a through hole 621 for the upper end of the rotating shaft 200 to pass through. The lower end of the protective cover 620 is connected and fixed to the outer surface of the mounting base 100. In the embodiments of the present disclosure, the protective cover 620 is provided to provide safety protection for components such as the driving gear 610 and the driven gear 230, ensuring reliability in use. In some embodiments, the protective cover 620 adopts a two-petal structure design, which can facilitate disassembly and reassembly during on-site maintenance and repair.

[0058] The present disclosure further provides a heliostat, which includes the heliostat rotation reducer described above, and the heliostat rotation reducer is used to adjust the rotation angle of the reflecting surface in the heliostat.

[0059] Thus far, various embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0060] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present disclosure. In particular, as long as there are no structural conflicts, the various technical features mentioned in the various embodiments may be combined in any manner.

Claims

1. A heliostat slewing support mechanism, characterized in that: include: A mounting seat (100), the bottom end of which is fixed on the heliostat column (1), and a mounting cavity (110) extending in a vertical direction is defined in the mounting seat (100); and A rotating shaft (200), the rotating shaft (200) being coaxially inserted into the mounting cavity (110), at least two ball bearings (300) being provided between the rotating shaft (200) and the mounting cavity (110) so as to enable the rotating shaft (200) to rotate around its own axis in the mounting cavity (110), and the upper end of the rotating shaft (200) being used for mounting a heliostat; Wherein, a thrust bearing (400) is provided between the bottom end of the rotary shaft (200) and the bottom end of the mounting seat (100).

2. The heliostat slewing support mechanism according to claim 1, wherein: A first step portion (111) is provided on the inner wall of the bottom end of the installation cavity (110), and a second step portion (210) opposite to the first step portion (111) is provided on the outer surface of the rotary shaft (200). The bottom of the thrust bearing (400) is pressed on the first step portion (111), and the top of the thrust bearing (400) abuts against the second step portion (210).

3. The heliostat slewing support mechanism according to claim 1, wherein: The rotary shaft (200) is rotatably arranged in the installation cavity (110) via a first ball bearing (310) and a second ball bearing (320) that are arranged sequentially from bottom to top; Preferably, the outer surface of the rotary shaft (200) is provided with a convex portion (220) extending outward, the upper and lower ends of the convex portion (220) are respectively formed as a first step surface (221) and a second step surface (222), the inner wall of the mounting cavity (110) is provided with a third step portion (112) opposite to the second step surface (222), the upper and lower ends of the first ball bearing (310) are respectively abutted on the second step surface (222) and the third step portion (112), the lower end of the second ball bearing (320) is abutted on the first step surface (221), and the upper end of the mounting seat (100) is provided with a bearing cover (120) for pressing and fixing the upper end of the second ball bearing (320); Preferably, a columnar spacer (130) is provided between the rotary shaft (200) and the inner wall of the mounting cavity (110), the lower end of the columnar spacer (130) abuts against the upper end of the first ball bearing (310), and the upper end of the columnar spacer (130) abuts against the lower end of the second ball bearing (320); Preferably, a connecting hole (131) is provided on the columnar spacer (130) for connecting the installation cavity (110) inside and outside the columnar spacer (130).

4. The heliostat slewing support mechanism according to claim 1, wherein: The mounting seat (100) is provided with a grease nozzle (140) for injecting lubricating oil into the mounting cavity (110).

5. The heliostat slewing support mechanism according to claim 1, wherein: The outer surface of the mounting seat (100) is provided with a plurality of lifting ears (150), and the plurality of lifting ears (150) are arranged at intervals along the circumference of the mounting seat (100).

6. The heliostat slewing support mechanism according to claim 1, wherein: A transition connector (500) is provided at the upper end of the rotary shaft (200), and the transition connector (500) is used to install a heliostat; Preferably, the rotary shaft (200) is a hollow tubular structure, and the transition connector (500) is provided with a connecting pipe (510) extending downward, and the connecting pipe (510) is coaxially inserted into the tubular cavity of the rotary shaft (200).

7. A heliostat rotary reducer, characterized in that: It comprises a driving module and the heliostat rotation support mechanism according to any one of claims 1 to 6, wherein the driving module is used to drive the rotation shaft (200) to rotate around its own axis.

8. The heliostat rotary reducer according to claim 7, characterized in that: The driving module comprises a servo driving device (600) arranged on the outer surface of the mounting seat (100), wherein an output shaft of the servo driving device (600) is in transmission connection with the rotary shaft (200) for driving the rotary shaft (200) to rotate around its own axis; Preferably, a driving gear (610) is provided on the output shaft of the servo drive device (600), and a coaxially fixed driven gear (230) is provided on the rotary shaft (200), and the driven gear (230) is meshed with the driving gear (610).

9. The heliostat rotary reducer according to claim 8, characterized in that: A protective cover (620) is provided on the outside of the driving gear (610), a through hole (621) is provided at the upper end of the protective cover (620) for the upper end of the rotary shaft (200) to pass through, and a lower end of the protective cover (620) is connected and fixed to the outer surface of the mounting seat (100).

10. A heliostat, characterized in that: The heliostat rotary reducer comprises the heliostat rotary reducer according to any one of claims 7 to 9, wherein the heliostat rotary reducer is used to adjust the rotation angle of the reflecting surface in the heliostat.

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