Heliostat

Abstract

According to the utility model, the relative position relation between the pitch angle driving device and the pitch angle rotating shaft of the heliostat is specially designed; therefore, the attitude of the pitch angle of the reflector when the total load borne by the pitch angle driving device reaches the maximum value tends to be consistent with the attitude of the pitch angle of the reflector when the force arm of the pitch angle driving device relative to the pitch angle rotating shaft is the maximum, and the requirement for the maximum load borne by the pitch angle driving device can be lowered. Therefore, the cost of the pitch angle driving device can be effectively reduced, and meanwhile, the reliability of the pitch angle driving device is improved.

Description

Technical Field

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

[0002] A heliostat is a device used to focus sunlight onto a central heat exchanger (absorber) mounted on the top of a heat absorption tower, and utilize solar thermal energy by heating the fluid inside. The posture (orientation) of the reflector in the heliostat can be adjusted as the position of the sun changes, so that the reflector of the heliostat can always reflect sunlight onto the absorber, that is, the heliostat can track the sun.

[0003] The sun-tracking function of the heliostat is achieved by adjusting the pitch angle and azimuth angle of the reflector in the heliostat. The azimuth angle adjustment is generally achieved by using an azimuth angle drive device to drive the reflector in the heliostat to rotate with a rotation axis perpendicular to the ground as the rotation axis, and the pitch angle adjustment is generally achieved by using a pitch angle drive device to drive the reflector in the heliostat to rotate with a pitch angle rotation axis parallel to the ground as the rotation axis.

[0004] In the process of driving the reflector of the heliostat to adjust the pitch angle and keeping the reflector of the heliostat at a certain pitch angle, the pitch angle driving device not only needs to overcome the deadweight of the reflector and the reflector bracket, but also needs to overcome the wind load imposed on the reflector by the wind in nature. Therefore, when selecting the pitch angle driving device, the maximum static load that the pitch angle driving device can withstand needs to be greater than the force imposed on the pitch angle driving device by the reflector of the heliostat and the wind in nature. However, the design of the current heliostat is not reasonable enough, resulting in excessive redundancy of the maximum static load required by the selected pitch angle driving device, which makes the cost of the heliostat high. Utility Model Content

[0005] In view of this, an object of the utility model is to provide a heliostat, which can effectively reduce the maximum static load requirement for the pitch angle drive device by specially designing the setting position of the pitch angle drive device, thereby reducing the cost of the pitch angle drive device and improving the reliability of the pitch angle drive device.

[0006] A heliostat, comprising: a reflector assembly, comprising a reflector for reflecting light and a reflector bracket for supporting the reflector; a connecting seat, comprising a connecting seat body and a pitch angle shaft arranged on the upper part of the connecting seat body, the reflector bracket being connected to the pitch angle shaft so that the reflector assembly can rotate around the central axis of the pitch angle shaft; a pitch angle driving device, used to drive the reflector assembly to rotate around the central axis of the pitch angle shaft to adjust the pitch angle of the reflector; the pitch angle driving device comprises a first end and a second end that can move away from and approach each other, the direction in which the first end and the second end move away from and approach each other is always along the connecting line of the first end and the second end, the first end is directly or indirectly hinged to the lower part of the connecting seat body through a first hinge shaft, the second end is hinged to the reflector bracket through a second hinge shaft, the pitch angle driving device drives the reflector to adjust the pitch angle through the mutual movement of the first end and the second end; when the heliostat is within the range allowed by the design When the heliostat works normally within the sun-chasing angle range and the pitch angle posture of the reflector is in the first posture, the lever arm of the pitch angle drive device relative to the pitch angle rotation axis is the first lever arm; wherein, the first posture refers to the pitch angle posture of the reflector when the ambient wind with constant wind force, wind direction parallel to the horizontal plane and perpendicular to the pitch angle rotation axis blows toward the reflector, and the total load applied to the pitch angle drive device by the dead weight of the reflector assembly and the wind load received by the reflector reaches the maximum value; when the heliostat works normally within the sun-chasing angle range allowed by the design and the pitch angle posture of the reflector is in any other posture other than the first posture, the lever arm of the pitch angle drive device relative to the pitch angle rotation axis is the second lever arm; wherein, the other posture refers to any pitch angle posture of the reflector when the ambient wind described in the foregoing blows toward the reflector, and the total load applied to the pitch angle drive device by the dead weight of the reflector assembly and the wind load received by the reflector does not reach the maximum value; the first lever arm is greater than the second lever arm.

[0007] As an improvement of the heliostat described in the utility model, a line connecting the center of the pitch angle rotation axis and the center of the first hinge axis is a first line segment, a line connecting the center of the pitch angle rotation axis and the center of the second hinge axis is a second line segment, and a line connecting the center of the first hinge axis and the center of the second hinge axis is a third line segment; the center of the pitch angle rotation axis, the center of the first hinge axis, and the center of the second hinge axis are located on the same plane.

[0008] As an improvement of the heliostat described in the utility model, when the reflector is in a posture parallel to the horizontal plane, the angle between the first line segment and the third line segment is an obtuse angle, the angle between the first line segment and the second line segment is less than 9°, the angle between the third line segment and the horizontal plane passing through the center of the first hinge axis is less than 10°, and the horizontal height of the first end is lower than the horizontal height of the second end.

[0009] As an improvement of the heliostat described in the utility model, the center of gravity of the reflector assembly coincides with the center of the pitch angle rotation axis.

[0010] As an improvement of the heliostat described in the utility model, the pitch angle driving device is one of an electric push rod, a telescopic hydraulic cylinder, a telescopic air cylinder or a scissor jack.

[0011] As an improvement of a heliostat described in the utility model, the reflector bracket includes a main beam and a plurality of bracket units fixedly arranged on the main beam at intervals, and the reflector is directly or indirectly supported on the bracket units; a first support and a second support are fixedly arranged in the middle of the main beam respectively; the second end is hinged to the second support through the second hinge shaft; the first support is connected to the pitch angle rotation axis, so that the reflector assembly can rotate around the central axis of the pitch angle rotation axis.

[0012] As an improvement of the heliostat described in the utility model, the bracket unit includes a central support and a secondary beam, the central support is fixedly arranged on the main beam, and the middle part of the secondary beam is fixedly connected to the main beam through the central support.

[0013] As an improvement of the heliostat described in the utility model, it also includes an azimuth driving device, which is arranged below the connecting seat body. The azimuth driving device drives the connecting seat body to rotate, thereby driving the reflecting mirror to adjust the azimuth.

[0014] As an improvement of the heliostat described in the utility model, the connecting seat body and the rotating output end of the azimuth driving device are integrally formed, or the connecting seat body and the rotating output end of the azimuth driving device are welded and connected, or the connecting seat body and the rotating output end of the azimuth driving device are detachably fixedly connected.

[0015] As an improvement of the heliostat described in the utility model, the connecting seat body includes a support column, the pitch angle rotation axis is arranged on the upper part of the support column, and the reflector assembly is suspended on the support column through the pitch angle rotation axis.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] In the heliostat provided by the utility model, the first end and the second end of the pitch angle driving device are hinged to the connecting seat and the reflector bracket respectively. Therefore, in the process of the pitch angle driving device driving the reflector of the heliostat to adjust the pitch angle, the relative position relationship between the pitch angle driving device and the pitch angle rotating shaft is also constantly changing, that is, the force arm size of the pitch angle driving device relative to the pitch angle rotating shaft is constantly changing. At the same time, since the posture of the reflector is also constantly changing, the total load applied to the pitch angle driving device by the deadweight of the reflector assembly and the wind load on the reflector is also constantly changing. The relationship between the positions of the heliostat and the pitch angle drive device is specially designed, so that when the reflector of the heliostat is in the first posture mentioned above when the total load received by the pitch angle drive device reaches the maximum value, the force arm of the pitch angle drive device relative to the pitch angle rotation axis also synchronously reaches the maximum value within the allowable rotation angle range. With this design, the pitch angle posture of the reflector when the total load received by the pitch angle drive device reaches the maximum value and the pitch angle posture of the reflector when the force arm of the pitch angle drive device relative to the pitch angle rotation axis is the maximum tend to be consistent, which can reduce the requirement for the maximum load that the pitch angle drive device can withstand, thereby effectively reducing the cost of the pitch angle drive device and improving the reliability of the pitch angle drive device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a heliostat provided in an embodiment of the utility model;

[0019] Figure 2 A partial enlarged view of a heliostat provided in an embodiment of the utility model;

[0020] Figure 3 An assembly diagram of a connecting seat and an azimuth driving device in a heliostat provided in an embodiment of the utility model;

[0021] Figure 4 A cross-sectional view of a heliostat provided in an embodiment of the utility model is formed by taking the plane where the first line segment and the second line segment are located as the section plane.

[0022] In the figure: 1: column; 2: azimuth angle driving device; 3: pitch angle driving device; 31: first end; 32: second end; 4: connecting seat; 41: connecting seat body; 42: pitch angle rotation axis accommodating hole; 43: connecting seat support; 5: reflector assembly; 51: first support beam; 52: reflector; 53: secondary beam; 54: main beam; 55: central support; 56: second support beam; 57: first support; 58: second support; 59: first hinge axis; 60: second hinge axis; 61: pitch angle rotation axis. DETAILED DESCRIPTION

[0023] The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0024] Certain directional terms used in the following description of the drawings, such as "inside", "outside", "upper", "lower", "top", "bottom" and other directional terms will be understood to have their normal meanings and refer to those directions involved when the drawings are normally viewed. Unless otherwise specified, the directional terms described in this specification are basically in accordance with the conventional directions understood by those skilled in the art.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0027] like Figure 1-4As shown, a heliostat comprises: a reflector assembly 5, comprising a reflector 52 for reflecting light and a reflector bracket for supporting the reflector 52; a connecting seat 4, comprising a connecting seat body 41 and a pitch angle rotation shaft 61 arranged on the upper part of the connecting seat body 41, the reflector bracket is connected to the pitch angle rotation shaft 61, so that the reflector assembly 5 can rotate around the central axis of the pitch angle rotation shaft 61; a pitch angle driving device 3, used to drive the reflector assembly 5 to rotate around the central axis of the pitch angle rotation shaft 61 to adjust the pitch angle of the reflector 52; the pitch angle driving device 3 comprises a first end 31 and a second end 32 that can move away from and approach each other, and the first end 31 and the second end 32 can move away from and approach each other. The direction in which the first end 31 and the second end 32 move away from and toward each other is always along the line connecting the first end 31 and the second end 32. The first end 31 is directly or indirectly hinged to the lower part of the connecting seat body 41 through the first hinge shaft 59, and the second end 32 is hinged to the reflector bracket through the second hinge shaft 60. The pitch angle driving device 3 drives the reflector 52 to adjust the pitch angle through the mutual movement of the first end 31 and the second end 32 away from and toward each other. When the heliostat works normally within the design allowed sun tracking angle range and the pitch angle posture of the reflector 52 is in the first posture, the force arm of the pitch angle driving device 3 relative to the pitch angle rotation shaft 61 is the first force arm. The first posture is It refers to the pitch angle attitude of the reflector 52 when the ambient wind with constant wind force, wind direction parallel to the horizontal plane and perpendicular to the pitch angle rotation axis 61 blows towards the reflector 52, and the total load applied to the pitch angle drive device 3 by the dead weight of the reflector assembly 5 and the wind load on the reflector 52 reaches the maximum value. It should be noted that the ambient wind blowing towards the reflector includes both the situation where the ambient wind blows towards the reflective surface of the reflector and the situation where the ambient wind blows towards the backlight surface of the reflector. When the heliostat works normally within the sun-chasing rotation angle range allowed by the design and the pitch angle attitude of the reflector 52 is in any other attitude other than the first attitude, the pitch angle drive device 3 is relative to the pitch angle rotation axis. The lever arm 61 is the second lever arm; wherein, other postures refer to any pitch angle posture of the reflector 52 when the total load applied to the pitch angle drive device 3 by the deadweight of the reflector assembly 5 and the wind load on the reflector 52 does not reach the maximum value when the ambient wind blows toward the reflector 52 as described above. It should be noted that the ambient wind blows toward the reflector, including both the situation where the ambient wind blows toward the reflective surface of the reflector and the situation where the ambient wind blows toward the backlight surface of the reflector; the first lever arm is greater than the second lever arm (wherein, the lever arm is the vertical distance from the force line of the first end 31 and the second end 32 to the pitch angle rotation axis 61 when the pitch angle posture remains unchanged). Specifically, in the present embodiment, a connecting seat support 43 is fixedly provided at the lower part of the connecting seat body 41, and the first end 31 of the pitch angle drive device 3 is hinged to the connecting seat support 43 through a first hinge shaft 59.The pitch angle driving device 3 is an electric push rod, wherein the first end 31 of the pitch angle driving device 3 is the telescopic end of the electric push rod, and the second end 32 of the pitch angle driving device 3 is located on the push rod cylinder of the electric push rod. Of course, in other embodiments, the pitch angle driving device 3 can also be selected from a telescopic hydraulic cylinder, a telescopic air cylinder, a scissor jack or other devices capable of realizing linear drive. In addition, it should be noted that the pitch angle rotating shaft 61, the first articulated shaft 59, and the second articulated shaft 60 in this embodiment can be continuous shafts without interruption in the middle, or segmented shafts with each segment spaced from each other but the central axis of each segment coaxially arranged.

[0028] In this embodiment, the first end 31 and the second end 32 of the pitch angle driving device 3 are hinged to the connecting seat 4 and the reflector bracket, respectively. Therefore, in the process of the pitch angle driving device 3 driving the reflector 52 of the heliostat to adjust the pitch angle, the relative position relationship between the pitch angle driving device 3 and the pitch angle rotating shaft 61 is also constantly changing, that is, the force arm size of the pitch angle driving device 3 relative to the pitch angle rotating shaft 61 is constantly changing. At the same time, since the posture of the reflector 52 is also constantly changing, the total load applied to the pitch angle driving device 3 by the deadweight of the reflector assembly 5 and the wind load on the reflector 52 is also constantly changing. In this embodiment, by adjusting the relative position relationship between the pitch angle driving device 3 and the pitch angle rotating shaft 61 of the heliostat The system is specially designed so that when the total load on the pitch angle drive device 3 of the reflector 52 of the heliostat reaches a maximum value, that is, when it reaches the first posture described above, the force arm of the pitch angle drive device 3 relative to the pitch angle rotation axis 61 also synchronously reaches a maximum value within the allowable rotation angle range. With this design, the pitch angle posture of the reflector 52 when the total load on the pitch angle drive device 3 reaches a maximum value and the pitch angle posture of the reflector 52 when the force arm of the pitch angle drive device 3 relative to the pitch angle rotation axis 61 is maximum tend to be consistent, which can reduce the requirement for the maximum load that the pitch angle drive device 3 can withstand, thereby effectively reducing the cost of the pitch angle drive device 3 and improving the reliability of the pitch angle drive device 3.

[0029] Preferably, in this embodiment, if Figure 4As shown, the line connecting the center of the pitch angle rotation axis 61 and the center of the first hinge axis 59 is a first line segment, the line connecting the center of the pitch angle rotation axis 61 and the center of the second hinge axis 60 is a second line segment, and the line connecting the center of the first hinge axis 59 and the center of the second hinge axis 60 is a third line segment; the center of the pitch angle rotation axis 61, the center of the first hinge axis 59, and the center of the second hinge axis 60 are located on the same plane. With this design, when the pitch angle driving device 3 drives the reflector assembly 5 to rotate, the reflector assembly 5 can rotate more smoothly. Among them, when the pitch angle rotation axis 61, the first hinge axis 59, and the second hinge axis 60 are continuous axes, the center of the pitch angle rotation axis 61, the center of the first hinge axis 59, and the center of the second hinge axis 60 are the centers of the continuous axis; when the pitch angle rotation axis 61, the first hinge axis 59, and the second hinge axis 60 are segmented axes, the center of the pitch angle rotation axis 61, the center of the first hinge axis 59, and the center of the second hinge axis 60 are the midpoints of the line connecting the centers of the two segments of the axes that are farthest apart.

[0030] Furthermore, in this embodiment, if Figure 4 As shown, when the reflector 52 is in a posture parallel to the horizontal plane, the angle between the first line segment and the third line segment is an obtuse angle, the angle between the first line segment and the second line segment is less than 9°, the angle between the third line segment and the horizontal plane passing through the center of the first hinge shaft 59 is less than 10°, and the horizontal height of the first end 31 is lower than the horizontal height of the second end 32. Among them, the angle between the third line segment and the horizontal plane passing through the center of the first hinge shaft 59 refers to the angle of the angle opening facing away from the reflector 52. With this design, it can be ensured that the pitch angle posture of the reflector 52 when the total load on the pitch angle drive device 3 reaches the maximum value is completely consistent with or nearly consistent with the pitch angle posture of the reflector 52 when the force arm of the pitch angle drive device 3 relative to the pitch angle rotation axis 61 is the maximum, thereby effectively reducing the requirements for the maximum static load that the pitch angle drive device 3 can withstand.

[0031] More preferably, in this embodiment, if Figure 1 As shown, the center of gravity of the reflector assembly 5 coincides with the center of the pitch angle rotation axis 61. The center of gravity of the reflector assembly 5 and the center of the pitch angle rotation axis 61 are designed to coincide, so that the load applied by the deadweight of the reflector assembly 5 to the pitch angle drive device 3 can be reduced to the greatest extent, so that the pitch angle drive device 3 only needs to or mainly bear the load applied by the wind load on the reflector 52 to the pitch angle drive device 3, thereby further reducing the requirement for the maximum static load that the pitch angle drive device 3 can withstand, thereby further reducing the cost of the pitch angle drive device 3.

[0032] Specifically, in this embodiment, Figure 1As shown, the reflector bracket includes a main beam 54 and a plurality of bracket units fixedly arranged on the main beam 54 at intervals, and the reflector 52 is directly or indirectly supported on the bracket units; a first support 57 and a second support 58 are fixedly arranged in the middle of the main beam 54 respectively; the second end 32 is hinged to the second support 58 through a second hinge shaft 60; the first support 57 is connected to the pitch angle rotation axis 61, so that the reflector assembly 5 can rotate around the central axis of the pitch angle rotation axis 61. The support unit includes a central support 55 and a secondary beam 53, wherein the central support 55 is fixedly arranged on the main beam 54, and the middle part of the secondary beam 53 is fixedly connected to the main beam 54 through the central support 55. In addition, the support unit also includes a first support beam 51 and a second support beam 56, which are respectively arranged on both sides of the extension direction of the main beam 54, and the first end 31 of the first support beam 51 is connected to the central support 55, and the second end 32 of the first support beam 51 is connected to the secondary beam 53, and the first end 31 of the second support beam 56 is connected to the central support 55, and the second end 32 of the second support beam 56 is connected to the secondary beam 53. By arranging the first support beam 51 and the second support beam 56, the stability and rigidity of the overall structure of the support unit can be further enhanced.

[0033] Furthermore, in the heliostat provided in this embodiment, if Figure 1-3 As shown, the azimuth driving device 2 is also included, which is arranged below the connection seat body 41. The azimuth driving device 2 drives the connection seat body 41 to rotate, thereby driving the reflector 52 to adjust the azimuth. The connection seat body 41 and the rotation output end of the azimuth driving device 2 are integrally formed, or the connection seat body 41 and the rotation output end of the azimuth driving device 2 are welded and connected, or the connection seat body 41 and the rotation output end of the azimuth driving device 2 are detachably fixedly connected. The connection seat body 41 includes a support column, and the pitch angle shaft 61 is arranged in the pitch angle shaft 61 accommodating hole 42 at the upper part of the support column, and the reflector assembly 5 is suspended on the support column through the pitch angle shaft 61. Specifically, in this embodiment, the azimuth driving device 2 is a worm gear rotary reducer, which is arranged below the connecting seat body 41 with the central axis of the worm gear perpendicular to the horizontal plane. The worm gear rotary reducer drives the connecting seat body 41 and the reflector assembly 5 to adjust the azimuth angle of the reflector 52 with the central axis of the worm gear as the rotation axis for adjusting the azimuth angle of the reflector 52. In addition, in the heliostat of this embodiment, Figure 1 As shown, it also includes a supporting foundation, which is usually fixed to the ground and used to support the entire heliostat, and the worm gear rotary reducer is arranged on the top of the supporting foundation. Specifically, in this embodiment, the supporting foundation can be a column 1.

[0034] The above describes the specific embodiments of the present application. It should be understood that the present application is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the substantive content of the present application. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

Claims

1. A heliostat, comprising: A reflector assembly, comprising a reflector for reflecting light and a reflector bracket for supporting the reflector; A connecting seat, comprising a connecting seat body and a pitch angle rotation shaft arranged on the upper part of the connecting seat body, wherein the reflector bracket is connected to the pitch angle rotation shaft so that the reflector assembly can rotate around the central axis of the pitch angle rotation shaft; A pitch angle driving device, used for driving the reflector assembly to rotate around the central axis of the pitch angle rotation axis to adjust the pitch angle of the reflector; The pitch angle driving device comprises a first end and a second end which can move away from and approach each other, the direction in which the first end and the second end move away from and approach each other is always along a line connecting the first end and the second end, the first end is hinged to the lower part of the connecting seat body directly or indirectly through a first hinge shaft, the second end is hinged to the reflector bracket through a second hinge shaft, and the pitch angle driving device drives the reflector to adjust the pitch angle through the movement of the first end and the second end moving away from and approaching each other; It is characterized in that When the heliostat operates normally within the design-allowed sun-tracking rotation angle range and the pitch angle posture of the reflector is in the first posture, the lever arm of the pitch angle drive device relative to the pitch angle rotation axis is the first lever arm; wherein, the first posture refers to the pitch angle posture of the reflector when the total load exerted on the pitch angle drive device by the deadweight of the reflector assembly and the wind load on the reflector reaches a maximum value when the ambient wind with constant wind force, wind direction parallel to the horizontal plane and perpendicular to the pitch angle rotation axis blows toward the reflector; When the heliostat operates normally within the design-allowed sun-tracking rotation angle range and the pitch angle posture of the reflector is in any other posture other than the first posture, the lever arm of the pitch angle drive device relative to the pitch angle rotation axis is the second lever arm; wherein the other posture refers to any pitch angle posture of the reflector when the ambient wind blows toward the reflector and the total load applied to the pitch angle drive device by the deadweight of the reflector assembly and the wind load on the reflector does not reach a maximum value; The first lever arm is greater than the second lever arm.

2. A heliostat according to claim 1, characterized in that: The line connecting the center of the pitch angle rotation axis and the center of the first hinge axis is a first line segment, the line connecting the center of the pitch angle rotation axis and the center of the second hinge axis is a second line segment, and the line connecting the center of the first hinge axis and the center of the second hinge axis is a third line segment; the center of the pitch angle rotation axis, the center of the first hinge axis, and the center of the second hinge axis are located on the same plane.

3. A heliostat according to claim 2, characterized in that: When the reflector is in a posture parallel to a horizontal plane, the angle between the first line segment and the third line segment is an obtuse angle, the angle between the first line segment and the second line segment is less than 9°, the angle between the third line segment and a horizontal plane passing through the center of the first hinge axis is less than 10°, and the horizontal height of the first end is lower than the horizontal height of the second end.

4. The heliostat according to claim 1, characterized in that: The center of gravity of the reflector assembly coincides with the center of the pitch angle rotation axis.

5. A heliostat according to any one of claims 1 to 4, characterized in that: The pitch angle driving device is one of an electric push rod, a telescopic hydraulic cylinder, a telescopic air cylinder or a scissor jack.

6. A heliostat according to claim 5, characterized in that: The reflector bracket comprises a main beam and a plurality of bracket units fixedly arranged on the main beam at intervals, and the reflector is directly or indirectly supported on the bracket units; The first support and the second support are fixedly arranged in the middle of the main beam respectively; the second end is hinged to the second support through the second hinge axis; the first support is connected to the pitch angle rotation axis, so that the reflector assembly can rotate around the central axis of the pitch angle rotation axis.

7. A heliostat according to claim 6, characterized in that: The bracket unit includes a central support and a secondary beam, wherein the central support is fixedly arranged on the main beam, and the middle portion of the secondary beam is fixedly connected to the main beam through the central support.

8. The heliostat according to claim 1, characterized in that: It also includes an azimuth driving device, which is arranged below the connecting seat body. The azimuth driving device drives the connecting seat body to rotate, thereby driving the reflecting mirror to adjust the azimuth.

9. A heliostat according to claim 8, characterized in that: The connection seat body and the rotation output end of the azimuth drive device are integrally formed, or the connection seat body and the rotation output end of the azimuth drive device are welded and connected, or the connection seat body and the rotation output end of the azimuth drive device are detachably fixedly connected.

10. The heliostat according to claim 6, characterized in that: The connecting seat body comprises a supporting column, the pitch angle rotation axis is arranged on the upper part of the supporting column, and the reflector assembly is suspended on the supporting column through the pitch angle rotation axis.

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