Heliostat

Abstract

The utility model relates to the technical field of heliostats, in particular to a heliostat. The utility model provides a heliostat. The heliostat comprises a torque tube, a plurality of trusses and a reflector, the torque tube comprises a main tube and a plurality of connecting pieces used for installing the trusses, the connecting pieces correspond to the trusses in a one-to-one mode, and the connecting pieces are sequentially arranged on the circumferential face of the main tube in the axis direction of the main tube; the connecting piece comprises a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are symmetrical about the axis of the main pipe. As the elastic piece has elasticity, the difference of thermal expansion and cold contraction caused by temperature change between the glass reflecting mirror and the metal cross beam can be compensated to a certain extent, the stress deformation of the cross beam and the reflecting mirror is reduced, and the sensitivity of the surface type precision of the heliostat relative to the environment temperature change is reduced; and the heliostat can be ensured to maintain a relatively good surface precision in four seasons of the year.

Description

Technical Field

[0001] The utility model relates to the technical field of heliostats, in particular to a heliostat. Background Art

[0002] As a clean, renewable energy source, the utilization of solar energy is gaining increasing attention. Concentrated solar power generation (CSP) is an emerging solar power generation technology following photovoltaic power generation. Tower-type CSP technology is an effective way to scale solar thermal utilization and has attracted widespread attention for its advantages, including energy storage and peak-shaving. In a tower-type solar power generation system, heliostats use reflectors to focus sunlight onto a heat sink, heating the heat-absorbing medium within the sink. This heat is then transferred through the heat exchange medium to drive a steam turbine for power generation.

[0003] The reflector in a traditional heliostat is fixed to a truss using a mirror bracket. The installation process is cumbersome, requiring the reflector and bracket to be bonded together using silicone adhesive and then bolted to the truss. Due to the complex application scenarios of heliostats, and in environments with large temperature differences, the large expansion coefficient of the truss and the small expansion coefficient of the reflector can cause stress and deformation between the truss and the reflector, affecting the heliostat's surface shape. Utility Model Content

[0004] (1) The problem to be solved by the present invention is that the reflector in a conventional heliostat is fixedly mounted on a truss via a mirror holder. In an environment with a large temperature difference, due to the large expansion coefficient of the truss and the small expansion coefficient of the reflector, stress deformation will occur between the truss and the reflector, thereby affecting the surface shape of the heliostat.

[0005] (2) Technical solution

[0006] A heliostat comprising a torque tube, a plurality of trusses, and a reflector;

[0007] The torque tube includes a main pipe and a plurality of connectors for mounting the trusses, the connectors corresponding to the trusses one by one, and the plurality of connectors are sequentially arranged on the circumference of the main pipe along the axis direction of the main pipe;

[0008] The connecting member includes a first connecting plate and a second connecting plate, wherein the first connecting plate and the second connecting plate are symmetrical about the axis of the main pipe;

[0009] The truss includes a connected crossbeam, a first support rod and a second support rod, one end of the first support rod is hinged to the first end of the crossbeam, one end of the second support rod is hinged to the second end of the crossbeam, and ends of the first support rod and the second support rod away from the crossbeam are respectively hinged to the first connecting plate; the top of the second connecting plate is connected to the lower half of the crossbeam;

[0010] The crossbeam has a bearing surface for mounting the reflector, and the bearing surface and the backlight surface of the reflector are connected via an elastic member.

[0011] According to an embodiment of the present invention, the elastic member is a foam tape.

[0012] According to one embodiment of the present invention, the elastic member includes a spring and a fixing plate, one end of the spring is fixed to the bearing surface, the fixing plate is fixed to an end of the spring away from the bearing surface, and the fixing plate and the reflector are bonded.

[0013] According to one embodiment of the present invention, the crossbeam has a top plate and two vertical plates, the top plate has a first plane and a second plane parallel to each other, the first plane constituting the bearing surface, and the two vertical plates are arranged on one side of the second plane; the top plate has a first side and a second side perpendicular to each other, the first side being longer than the second side, and the two vertical plates are arranged along the second side and perpendicular to the top plate;

[0014] Along the extension direction of the second side, a bent plate is respectively provided on both sides of the top plate, and the bent plate is bent toward the middle direction of the second side; the side of the vertical plate close to the bent plate is connected to the bent plate through an arc transition.

[0015] According to one embodiment of the present invention, a hook-shaped plate is provided at one end of the vertical plate away from the bent plate, and the hook-shaped plate is bent toward the top plate.

[0016] According to one embodiment of the present invention, it also includes a horizontal rotation mechanism, which includes a worm gear reducer and a connecting seat. The worm gear reducer includes an integrally formed worm wheel case and worm housing. The connecting seat is arranged at the top of the worm wheel case and is integrally formed with the worm wheel case. A shaft sleeve is provided at the top of the connecting seat.

[0017] According to one embodiment of the present invention, the interior of the connecting seat is hollow, and at least one weight-reducing hole is provided on its surface. A sealing plate is provided on the inner wall of the weight-reducing hole, and at least one internal support plate is installed inside the weight-reducing hole.

[0018] According to one embodiment of the present invention, the torque tube includes two fixed ear plates, which are installed on the upper half of the main tube. A rotating shaft is rotatably installed in the sleeve, and the two fixed ear plates are respectively connected to the rotating shaft so that the torque tube can rotate around the axis of the sleeve.

[0019] According to one embodiment of the present utility model, the heliostat further includes a pitch angle adjustment mechanism, which includes an electric push rod, two push rod ear plates are provided on the lower half of the torque tube, and two connecting ears are fixed on the worm gear housing; the outer shell of the electric push rod is hinged between the two push rod ear plates, and the rod end of the electric push rod is hinged between the two connecting ears.

[0020] According to an embodiment of the present invention, the heliostat further includes a column, a top of the column is provided with a base, and the worm gear housing is mounted on the base.

[0021] Beneficial effects of the utility model:

[0022] The bearing surface of the beam and the reflector are connected by an elastic member. In a complex environment with high day and night temperatures, even if the expansion coefficients of the beam and the reflector are different, resulting in a significant difference in the deformation of the beam and the reflector, the elasticity of the elastic member can to some extent compensate for the difference in thermal expansion and contraction between the glass reflector and the metal beam caused by temperature changes, reducing stress and deformation of the beam and the reflector, and making the heliostat's surface accuracy less sensitive to changes in ambient temperature. This ensures that the heliostat maintains a good surface accuracy throughout the year, improving its overall optical performance throughout the year and thereby increasing the power generation of the power station. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A front view of an embodiment of the present utility model;

[0025] Figure 2 A perspective view of a torque tube provided in an embodiment of the present utility model;

[0026] Figure 3 A schematic cross-sectional view of a torque tube provided in an embodiment of the present utility model;

[0027] Figure 4 A structural diagram of a truss provided in an embodiment of the present utility model;

[0028] Figure 5 A side view of a crossbeam provided in an embodiment of the present invention;

[0029] Figure 6This is a structural diagram of the horizontal rotation mechanism provided in an embodiment of the present utility model.

[0030] Icons: 1. Reflector; 2. High-strength foam tape; 3. Truss; 4. Electric push rod; 5. Torque tube; 6. Horizontal rotation mechanism; 7. Column; 8. Main pipe; 9. Reinforcement plate; 10. Push rod ear plate; 11. First connecting plate; 12. Fixed ear plate; 13. Second connecting plate; 14. Crossbeam; 141. Top plate; 142. Bent plate; 143. Arc transition; 144. Vertical plate; 145. Hook plate; 15. First support rod; 16. Second support rod; 17. Worm gear housing; 172. Connecting ear; 18. Connecting seat; 181. First lightening hole; 182. Second lightening hole; 183. Bushing; 19. Worm housing; 20. Base; 21. Drive motor. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] like Figures 1-6 As shown, one embodiment of the present invention provides a heliostat, including a torque tube 5, a plurality of trusses 3, and a reflector 1. The torque tube 5 includes a main tube 8 and a plurality of connectors for mounting the trusses 3. The connectors correspond to the trusses 3 one by one, and the plurality of connectors are sequentially arranged on the circumference of the main tube 8 along the axis of the main tube 8. The connectors include a first connecting plate 11 and a second connecting plate 13. The first connecting plate 11 and the second connecting plate 13 are symmetrical about the axis of the main tube 8.

[0033] The truss 3 includes a connected crossbeam 14, a first support rod 15, and a second support rod 16. One end of the first support rod 15 is hinged to the first end of the crossbeam 14, and one end of the second support rod 16 is hinged to the second end of the crossbeam 14. The ends of the first support rod 15 and the second support rod 16 away from the crossbeam 14 are respectively hinged to the first connecting plate 11; the top of the second connecting plate 13 is connected to the lower half of the crossbeam 14;

[0034] The crossbeam 14 has a bearing surface for mounting the reflector 1 , and the bearing surface and the backlight surface of the reflector 1 are connected via an elastic member.

[0035] In this embodiment, the bearing surface of the beam 14 and the reflector 1 are connected by an elastic member. In a complex environment with varying day and night temperatures, even if the beam 14 and the reflector 1 have different expansion coefficients, resulting in a significant difference in the deformation of the beam 14 and the reflector 1, the elasticity of the elastic member can, to a certain extent, compensate for the difference in thermal expansion and contraction between the glass reflector 1 and the metal beam 14 caused by temperature changes, thereby reducing stress and deformation of the beam 14 and the reflector 1, and reducing the sensitivity of the heliostat's surface accuracy to changes in ambient temperature. This ensures that the heliostat maintains a good surface accuracy throughout the year, improves the heliostat's overall optical performance throughout the year, and thereby increases the power generation of the power station.

[0036] As a preferred embodiment, the elastic member is a high-strength foam tape 2. The high-strength foam tape 2 is made of EVA or PE foam as a base material, coated with a solvent-based (or hot-melt) pressure-sensitive adhesive on both sides, and then covered with release paper. The high-strength foam tape 2 has a very high adhesive strength, which can ensure a stable adhesion to the reflector 1, ensuring the reliability and durability of the adhesion. Secondly, the foam base material has good buffering properties, which can compensate in thickness and plane direction to make up for the difference in deformation between the beam 14 and the reflector 1. In addition, using the high-strength foam tape 2 is more convenient than using a mirror holder or backboard for installation. There is no need to use fasteners such as bolts, and the installation steps are simpler.

[0037] In addition, in this embodiment, the reflector 1 is bonded to the beam 14 by the high-strength foam tape 2. The beam 14, the high-strength foam tape 2 and the reflector 1 are connected in a linear manner, which has better mechanical properties than the breakpoint connection of bolts and has a stronger ability to resist wind loads and gravity loads.

[0038] When in use, tear off the release paper on one side of the high-strength foam tape 2 and stick it to the bearing surface of the beam 14 , then tear off the release paper on the other side of the high-strength foam tape 2 and stick the backlight surface of the reflector 1 to the high-strength foam tape 2 .

[0039] As an optional embodiment, the elastic member includes a spring and a fixing plate, the fixing plate is a hard plastic plate, one end of the spring is fixed to the bearing surface of the beam 14, and the fixing plate is fixed to the end of the spring away from the bearing surface, and the side of the fixing plate facing the backlight surface of the reflector 1 is bonded to the backlight surface of the reflector 1 by an adhesive.

[0040] In an environment with a large temperature difference, the spring has good deformation ability and can therefore act as a buffer between the beam 14 and the reflector 1, thereby making up for the difference in deformation between the beam 14 and the reflector 1, and to a certain extent compensating for the difference in thermal expansion and contraction between the glass reflector 1 and the metal beam 14 due to temperature changes, reducing the stress deformation of the beam 14 and the reflector 1, ensuring that the reflector 1 maintains a normal surface shape, and stabilizing the surface accuracy of the reflector 1.

[0041] As a specific example, Figure 5 As shown, the crossbeam 14 includes a top plate 141, two vertical plates 144 and two bent plates 142, wherein the top plate 141 has a first plane and a second plane that are parallel to each other. The first plane is Figure 5 The upper surface of the middle top plate 141, the second plane is Figure 5 The first plane on the lower surface of the middle top plate 141 constitutes the aforementioned bearing surface. The two vertical plates 144 are located on the lower surface of the top plate 141 , and the two vertical plates 144 are perpendicular to the top plate 141 .

[0042] Furthermore, the top plate 141 has a first side and a second side that are perpendicular to each other. The first side is the long side of the top plate 141, and the second side is the short side of the top plate 141. Two vertical plates 144 are arranged along the short side of the top plate 141, so that a mounting cavity is formed between the two vertical plates 144. Along the short side of the top plate 141, a curved plate 142 is provided on each side of the top plate 141. The curved plate 142 bends toward the middle of the short side of the top plate 141. The end of the vertical plate 144 closest to the curved plate 142 is connected to the curved plate 142 by an arc-shaped transition 143. Furthermore, a hook-shaped plate 145 is connected to the end of the vertical plate 144 away from the top plate 141. The hook-shaped plate 145 bends toward the top plate 141.

[0043] Preferably, the top plate 141 , the bent plate 142 , the arc-shaped transition 143 , the vertical plate 144 and the hook-shaped plate 145 are integrally formed.

[0044] It should be noted that while conventional crossbeam 14 is shaped like a gate, the crossbeam 14 of this embodiment incorporates a bent plate 142, an arcuate transition 143, and a hooked plate 145. This increases the cross-sectional area of this crossbeam 14 by at least 20%-30% compared to conventional crossbeams, resulting in greater overall strength and load-bearing capacity. Furthermore, when subjected to stress, this crossbeam 14 is partially relieved through the bent plate 142 and arcuate transition 143, thereby extending the service life of the crossbeam 14.

[0045] like Figure 4As shown, the first support rod 15 and the second support rod 16 are both square tubes, and one end of the first support rod 15 and the second support rod 16 are respectively hinged to the left and right ends of the crossbeam 14. Specifically, one end of the first support rod 15 and the second support rod 16 are inserted into the mounting cavity of the crossbeam 14 and connected to the crossbeam 14 by bolts, rivets or pins.

[0046] It should be noted that the number of connectors on the torque tube 5 is determined according to the number of trusses 3 , and the number of trusses 3 is determined by analyzing and calculating the size of the reflector 1 and the local wind load conditions.

[0047] It should be noted that if Figure 2 and Figure 3 As shown, the first connecting plate 11 in the connecting piece is welded to the arc surface of the lower half of the main pipe 8, and the second connecting plate 13 in the connecting piece is welded to the arc surface of the upper half of the main pipe 8. A first mounting hole and a second mounting hole are respectively opened at the left and right ends of the first connecting plate 11. Figure 1 The ends of the first support rod 15 and the second support rod 16 away from the crossbeam 14 are respectively connected to the mounting holes on the left and right ends of the first connecting plate 11. For example, the connection can be made by a pin or a rivet. Furthermore, the thickness of the second connecting plate 13 is less than the distance between the two vertical plates 144 in the crossbeam 14, that is, the second connecting plate 13 can be inserted into the mounting cavity of the crossbeam 14, and a pin hole is provided on the top of the second connecting plate 13. Figure 1 As shown, after the second connecting plate 13 is inserted into the installation cavity of the crossbeam 14 , the second connecting plate 13 and the crossbeam 14 are connected by a pin.

[0048] As a specific embodiment, this heliostat also includes a column 7, a horizontal rotation mechanism 6, and a pitch angle adjustment mechanism. The bottom of column 7 is fixed to the ground by pouring concrete, supporting the heliostat. The horizontal rotation mechanism 6 is mounted on the upper surface of column 7 and drives the reflector 1 to rotate about the axis of column 7. The pitch angle adjustment mechanism is used to adjust the pitch angle of the reflector 1.

[0049] Specifically, such as Figure 6 As shown, the horizontal rotation mechanism 6 includes a worm gear reducer and a connecting seat 18, wherein the worm gear reducer includes a worm gear housing 17, a worm housing 19, a worm wheel, a worm and a drive motor 21, the worm wheel is rotatably installed inside the worm gear housing 17, and the worm is rotatably installed inside the worm housing 19, the worm wheel and the worm are connected in transmission, the top of the worm gear housing 17 forms the output end of the reducer, the connecting seat 18 is connected to the output end of the reducer, and a shaft sleeve 183 is provided at the top of the connecting seat 18, and the drive motor 21 is fixedly mounted at one end of the worm housing 19 and connected to the worm.

[0050] Preferably, the worm gear housing 17, the worm housing 19 and the connecting seat 18 are integrally formed. In this embodiment, the reducer housing and the connecting seat 18 are cast together, which can effectively improve the overall rigidity of the horizontal rotation mechanism 6 and reduce the impact of assembly errors.

[0051] In addition, the connecting seat 18 is hollow and has a cavity, which can further reduce the weight of the connecting seat 18 and save materials.

[0052] As an optional embodiment, Figure 6 As shown, a first weight-reducing hole 181 and a second weight-reducing hole 182 are provided on the side of the connecting seat 18, and the first weight-reducing hole 181 is higher than the second weight-reducing hole 182. The first weight-reducing hole 181 is a semicircular hole, and the inner wall of the first weight-reducing hole 181 is sealed by a sealing plate, and a plurality of internal support plates are welded between the inner walls of the first weight-reducing hole 181. There are a plurality of second weight-reducing holes 182, and the second weight-reducing holes 182 are irregular hole-shaped, and the inner walls of the second weight-reducing holes 182 are sealed by a sealing plate. The purpose of the first weight-reducing hole 181 and the second weight-reducing hole 182 is to reduce the weight of the connecting seat 18 to save materials and reduce costs, while the function of the internal support plate is to ensure the strength of the connecting seat 18 itself.

[0053] Preferably, Figure 6 As shown, a base 20 is fixedly connected to the bottom of the worm gear housing 17 via a flange, and the base 20 and the upper surface of the column 7 are fixed via flanges and bolts.

[0054] In this embodiment, if Figure 2 As shown, it includes two fixed ear plates 12, which are located in the middle of the main pipe 8 and installed on the upper part of the main pipe 8. The two fixed ear plates 12 are provided with shaft holes for the rotating shaft to penetrate. Figure 1 A rotating shaft is rotatably installed in the shaft sleeve 183, and the shaft holes on the two fixed ear plates 12 are respectively fixed to the rotating shaft.

[0055] In this embodiment, the pitch angle adjustment mechanism includes an electric push rod 4, such as Figure 2 As shown, a reinforcing plate 9 is connected to the middle position of the torque tube 5, and two push rod ear plates 10 are connected to the reinforcing plate 9. The push rod ear plates 10 are provided with pin holes. Figure 3 As shown, the push rod lug 10 and the fixed lug 12 are symmetrical about the axis of the main pipe 8. Figure 6 As shown, two connecting ears 172 are fixed on the outer wall of the worm gear housing 17. Figure 1 The housing of the electric push rod 4 is hinged between the two push rod ear plates 10 through a pin, and the telescopic rod end of the electric push rod 4 is hinged between the two connecting ears 172.

[0056] In some embodiments, the reinforcing plate 9 and the push rod ear plate 10 can be connected by welding or cast together.

[0057] The torque tube 5 is pushed to swing around the axis of the shaft sleeve 183 on the connecting seat 18 by extending or shortening the electric push rod 4, thereby driving the reflector 1 to swing around the axis of the shaft sleeve 183, thereby adjusting the pitch angle of the reflector 1.

[0058] In the description of this utility model, it should be noted that the terms "upper" and "lower" and other terms indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components 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 utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0059] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installation", "connection", and "connection" 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, an indirect connection through an intermediate medium, or a connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heliostat, characterized in that: It comprises a torque tube (5), a plurality of trusses (3) and a reflector (1); The torque tube (5) includes a main tube (8) and a plurality of connecting pieces for mounting the truss (3), wherein the connecting pieces correspond to the truss (3) one by one, and the plurality of connecting pieces are sequentially arranged on the circumference of the main tube (8) along the axial direction of the main tube (8); The connecting member comprises a first connecting plate (11) and a second connecting plate (13), wherein the first connecting plate (11) and the second connecting plate (13) are symmetrical about the axis of the main pipe (8); The truss (3) comprises a connected crossbeam (14), a first support rod (15) and a second support rod (16), one end of the first support rod (15) is hinged to the first end of the crossbeam (14), one end of the second support rod (16) is hinged to the second end of the crossbeam (14), and one end of the first support rod (15) and the second support rod (16) away from the crossbeam (14) are respectively hinged to the first connecting plate (11); the top of the second connecting plate (13) is connected to the lower half of the crossbeam (14); The crossbeam (14) has a bearing surface for mounting the reflector (1), and the bearing surface and the backlight surface of the reflector (1) are connected via an elastic member.

2. A heliostat according to claim 1, characterized in that: The elastic member is a foam tape.

3. The heliostat according to claim 1, wherein: The elastic member comprises a spring and a fixing plate, one end of the spring is fixed on the bearing surface, the fixing plate is fixed on an end of the spring away from the bearing surface, and the fixing plate and the reflector (1) are bonded.

4. The heliostat according to claim 2, wherein: The crossbeam (14) has a top plate (141) and two vertical plates (144), the top plate (141) has a first plane and a second plane that are parallel to each other, the first plane constituting the bearing surface, and the two vertical plates (144) are arranged on one side of the second plane; the top plate (141) has a first side and a second side that are perpendicular to each other, the first side being longer than the second side, and the two vertical plates (144) are arranged along the second side and are perpendicular to the top plate (141); Along the extension direction of the second side, a bent plate (142) is provided on each side of the top plate (141), and the bent plate (142) is bent toward the middle of the second side; and the side of the vertical plate (144) close to the bent plate (142) is connected to the bent plate (142) through an arc transition (143).

5. The heliostat according to claim 4, characterized in that: A hook-shaped plate (145) is provided at one end of the vertical plate (144) away from the bent plate (142), and the hook-shaped plate (145) is bent toward the top plate (141).

6. The heliostat according to claim 1, wherein: The invention also includes a horizontal rotation mechanism (6), wherein the horizontal rotation mechanism (6) includes a worm gear reducer and a connecting seat (18), wherein the worm gear reducer includes an integrally formed worm wheel housing (17) and a worm wheel housing (19), wherein the connecting seat (18) is arranged on the top of the worm wheel housing (17) and is integrally formed with the worm wheel housing (17), and a shaft sleeve (183) is provided on the top of the connecting seat (18).

7. The heliostat according to claim 6, characterized in that: The interior of the connecting seat (18) is hollow, and at least one weight-reducing hole is provided on its surface. A sealing plate is provided on the inner wall of the weight-reducing hole, and at least one internal support plate is installed inside the weight-reducing hole.

8. The heliostat according to claim 6, characterized in that: The torque tube (5) includes two fixed ear plates (12), which are installed on the upper half of the main tube (8). A rotating shaft is rotatably installed in the shaft sleeve (183), and the two fixed ear plates (12) are respectively connected to the rotating shaft, so that the torque tube (5) can rotate around the axis of the shaft sleeve (183).

9. The heliostat according to claim 6, characterized in that: The heliostat further includes a pitch angle adjustment mechanism, which includes an electric push rod (4); the lower half of the torque tube (5) is provided with two push rod ear plates (10); two connecting ears (172) are fixed on the worm gear housing (17); the outer shell of the electric push rod (4) is hinged between the two push rod ear plates (10), and the rod end of the electric push rod (4) is hinged between the two connecting ears (172).

10. The heliostat according to claim 6, characterized in that: The heliostat further comprises a column (7), a base (20) is provided on the top of the column (7), and the worm gear housing (17) is mounted on the base (20).

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