Heliostat bracket and heliostat

Abstract

The heliostat bracket comprises a torsion tube assembly, a supporting beam assembly, an inclined strut assembly and a purline assembly, the torsion tube assembly comprises a main tube, a clamping jaw assembly and a supporting seat, a through hole for the main tube to penetrate through is formed in the middle position of the clamping jaw assembly, the supporting seat is arranged on the main tube, and the clamping jaw assembly is of a triangular structure; a plurality of clamping jaw assemblies are arranged on the main pipe, each clamping jaw assembly is connected with one supporting beam assembly and two inclined strut assemblies, each supporting beam assembly penetrates through one vertex of the corresponding clamping jaw assembly, one ends of the two inclined strut assemblies are connected with the other two vertexes of the corresponding clamping jaw assembly respectively, and the other ends of the two inclined strut assemblies are connected with the corresponding supporting beam assembly. The two ends of the supporting beam assembly are connected with the purline assemblies. The heliostat comprises a reflecting mirror, a stand column, an electric push rod, a rotary speed reducer, a mirror frame and a connecting assembly. The rigidity of the spectacle frame system is improved, the structural strength and rigidity are improved through the connecting assemblies, and the bending moment resistance and the torque resistance are good.

Description

Technical Field

[0001] The invention relates to the technical field of tower solar power generation, in particular to a heliostat frame and a heliostat. Background Art

[0002] Tower solar power generation is a concentrated solar power generation technology that uses a large number of heliostats to reflect and focus sunlight onto the absorber at the top of the central heat absorption tower, converting solar energy into thermal energy, and then generating electricity through a thermal cycle. Due to its energy storage characteristics, it can generate electricity day and night, with little impact on the power grid, and is increasingly being used.

[0003] The integration of source, grid, load and storage promotes the development of a new type of power system. There are more and more large energy base projects. The peak-shaving and energy storage role of solar thermal power generation is becoming more and more important. With the increase in installed capacity and heat storage time, the scale of heliostat mirror field is also getting larger and larger. Due to the long distance between the heliostat and the heat absorber, the reflector of the heliostat should have a very high surface accuracy, and the surface curvature of the reflector needs to be adjusted according to the distance to the heat absorber to ensure that the spot size reflected to the heat absorber meets the requirements. The heliostat frame is the support carrier of the reflective lens. In daily operation, in addition to bearing the weight of the lens, it also bears wind loads from various directions. Therefore, the strength and reliability of the frame are crucial to the stability of the heliostat. Summary of the invention

[0004] In order to overcome the above problems existing in the prior art, the present invention provides a heliostat frame and a heliostat.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a heliostat frame, including a torsion tube assembly, a support beam assembly, a diagonal brace assembly, and a purlin assembly, the torsion tube assembly including a main pipe, a claw assembly, and a support seat, a through hole for the main pipe to pass through is arranged in the middle position of the claw assembly, the main pipe is provided with a support seat, and the claw assembly is a triangular structure; a plurality of claw assemblies are arranged on the main pipe, each of the claw assemblies is connected to a group of support beam assemblies and two groups of diagonal brace assemblies, the support beam assembly passes through a vertex of the claw assembly, one end of the two groups of diagonal brace assemblies are respectively connected to the remaining two vertices of the claw assembly, and the other end is connected to the support beam assembly; the two ends of the support beam assembly are connected to the purlin assembly.

[0006] In the above-mentioned heliostat frame, the claw assembly includes two claw side plates, a welded rib plate, and a welded column. The claw side plates are of a triangular structure. A through hole for the main pipe to pass through is provided in the middle of the claw side plates. The two claw side plates are connected by welding rib plates and welding columns. A rectangular notch is provided on the bottom edge of the claw side plates, and the two waists of the claw side plates are bent.

[0007] In the above-mentioned heliostat frame, the support seat includes a push rod support seat and a rotating shaft support seat, the push rod support seat and the rotating shaft support seat are symmetrical with respect to the central cross-section of the main pipe, and the push rod support seat and the rotating shaft support seat are connected to the main pipe by welding a reinforcing plate.

[0008] In the above-mentioned heliostat frame, the support beam assembly includes a support beam and an adjusting gasket, the support beam and the adjusting gasket are detachably connected, the cross section of the support beam is a groove structure, and the support beam corresponding to the groove edge line position is bent.

[0009] In the above-mentioned heliostat frame, the top of the support beam is provided with a mounting hole for fixing the reflector, a connecting hole for fixing the adjusting gasket, and a fixing hole for fixing the purlin, and the side of the support beam is provided with a pin connecting hole.

[0010] A heliostat comprises a reflector, a column, an electric push rod, and a rotary reducer, and also comprises a heliostat frame and a connecting assembly as described above, wherein the rotating shaft support seat is connected to the rotary reducer through the connecting assembly, and the rotary reducer drives the connecting assembly to rotate horizontally around the column, and the push rod support seat is connected to the electric push rod through the connecting assembly, and the electric push rod is telescopically extended to drive the reflector to rotate vertically around the rotating shaft of the supporting flange assembly.

[0011] In the above-mentioned heliostat frame, the diagonal brace assembly includes diagonal braces and rivet nuts, the cross-section of the diagonal brace is a groove-shaped structure, and is bent at the groove edge line; the purlin assembly includes purlins and rivet nuts, the purlin is a groove-shaped structure, the groove edge is cut off at the connection position with the support beam, and the rivet nut installation hole is provided.

[0012] In the above-mentioned heliostat, the connection assembly includes an L-shaped support flange, a rotating shaft, and a connecting seat. A mounting hole is provided on the top of the L-shaped support flange, and the mounting hole corresponds to the pitch axis of the heliostat. A base is provided at the bottom of the L-shaped support flange, and the base corresponds to the azimuth axis of the heliostat. The azimuth axis and the pitch axis are perpendicular to each other but do not intersect. The transition connection portion between the mounting hole and the base is provided as an arc surface structure. The middle position of the mounting hole is a rotating shaft mounting hole, and the rotating shaft is installed at the rotating shaft mounting hole. A sliding bearing is provided between the rotating shaft and the rotating shaft mounting hole, and an O-ring groove is provided in the middle of the rotating shaft corresponding to the sliding bearing. Oil seals and connecting seats are provided at both ends of the rotating shaft.

[0013] In the above-mentioned heliostat, 12 reflectors are provided, 4 of the 12 reflectors are symmetrically arranged along the axis of the main tube, and 3 are arranged perpendicular to the axis of the main tube; the lenses of the reflectors are connected to the adhesive tray by an adhesive, and the adhesive tray is fixed to the mirror frame by bolts.

[0014] In the above-mentioned heliostat, the bonding tray is provided with adhesive thickness limiting protrusions, and the protrusions are 0.5 mm higher than the bonding surface.

[0015] The beneficial effect of the present invention is that the purlin assembly of the present invention is connected to the support beam assembly so that they are integrated along the axial direction of the torsion tube, thereby increasing the rigidity of the mirror frame system. The support beam groove edge is bent outward and the diagonal support groove edge is bent inward, which facilitates the mechanical connection with the claw assembly and increases the structural rigidity of the support beam assembly.

[0016] The thickness of each structure of the L-shaped support flange of the present invention is uniform and basically consistent, the connection parts are all rounded transition, it is cast in one piece, the overall shape is similar to an L, two longitudinal reinforcing ribs are arranged inside, the transition connection part is provided with an arc surface structure, and the base is a cylindrical step structure, which improves the structural strength and rigidity, and has good bending and torque resistance performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the frame of the present invention; Figure 2 The present invention Figure 1 Enlarged view of part A in the middle; Figure 3 The present invention Figure 1 Enlarged view of part B; Figure 4 is a schematic diagram of a torsion tube assembly of the present invention; Figure 5 is a schematic diagram of a heliostat of the present invention; Figure 6 It is a schematic diagram of the relationship between the push rod stroke and the pitch angle movement and the cable routing of the present invention; Figure 7 is a schematic diagram of a connection assembly of the present invention; Figure 8 This is a front view of the L-shaped support flange of the present invention; Fig. 9 is a top view of the L-shaped support flange of the present invention; Fig.10 is a schematic diagram of a reflector of the present invention; Fig.11 It is a schematic diagram of a bonding tray of the present invention. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] like Figure 1 As shown, this embodiment discloses a heliostat frame, including a torsion tube assembly 2.1, a support beam assembly 2.2, a diagonal brace assembly 2.3, and a purlin assembly 2.4, which are assembled into a frame body through a pin 2.5, a cotter pin 2.6, and a bolt 2.7. Figure 4 As shown, the torsion tube assembly includes a main pipe 2.1.1, a claw assembly 2.1.2, a rotating shaft support seat 2.1.3, a push rod support seat 2.1.4, a welding reinforcement plate 2.1.5, and a positioning support seat 2.1.6. A through hole for the main pipe 2.1.1 to pass through is arranged in the middle position of the claw assembly 2.1.2, and a support seat is arranged on the main pipe 2.1.1. The claw assembly is a triangular structure; a plurality of claw assemblies are arranged on the main pipe 2.1.1, and each of the claw assemblies is connected to a group of support beam assemblies and two groups of diagonal brace assemblies. The support beam assembly passes through a vertex of the claw assembly, and one end of the two groups of diagonal brace assemblies are respectively connected to the remaining two vertices of the claw assembly, and the other end is connected to the support beam assembly; both ends of the support beam assembly are connected to the purlin assembly.

[0020] In this embodiment, two positioning support seats 2.1.6 are provided on the main pipe 2.1.1. The positioning support seats 2.1.6 are symmetrical with respect to the central cross-section of the circular pipe. The planes of the two positioning support seats 2.1.6 have a high flatness, generally requiring 0.5 mm, which serves as the positioning reference plane P for the overall processing of the connecting hole group 1-8 of the twisted tube composition 2.1. The center lines of the 8 groups of claw assemblies are parallel to the positioning reference plane.

[0021] The shaft support seat 2.1.3 and the push rod support seat 2.1.4 are welded to the main pipe 2.1.1 through the welding reinforcement plate 2.1.5. The welding reinforcement plate increases the connection area between the support seat and the round pipe and reduces the local stress on the round pipe under the load. The shaft support seat has a bolt hole connected to the connecting assembly, and the push rod support seat has a bolt hole connected to the electric push rod ear shaft.

[0022] After the torsion tube assembly is welded, it is hot-dip galvanized and straightness corrected, and then the connection hole groups 1-8 with the support beam assembly 2.2 and the diagonal brace assembly 2.3 are processed as a whole. As the main bearing component of the heliostat frame, the structural strength and precision of the torsion tube assembly lay the foundation for the reliability and surface accuracy of the entire frame.

[0023] In this embodiment, the main pipe 2.1.1 is a circular steel pipe, which is a seamless steel pipe or a welded steel pipe that meets the standards. In view of reducing costs, a welded steel pipe is preferred. The outer diameter and wall thickness parameters of the steel pipe are determined by strength and rigidity verification according to the heliostat wind load.

[0024] The support beam assembly 2.2 is composed of a support beam 2.2.1 and an adjustment gasket 2.2.2, which are connected as a whole by rivets 2.2.3. The cross section of the support beam is a groove structure, and the groove edge is bent to increase the structural rigidity of the support beam. At the connection position with the claw assembly, the cutting part is bent so that the support beam can be placed in the claw assembly. The top surface of the support beam is provided with a bolt through hole for fixing the reflector, a riveted connection hole for fixing the adjustment gasket, and a bolt through hole for fixing the purlin assembly; three pin connection holes are provided on the side for connecting the diagonal brace and the claw assembly.

[0025] The diagonal brace assembly 2.3 is composed of a diagonal brace 2.3.1 and a rivet nut 2.3.2. The cross section of the diagonal brace is a groove structure, and the groove edge is bent to increase the structural rigidity of the support beam. A connection hole connected to the support beam and a rivet nut connected to the claw assembly are provided on the side of the diagonal brace. The rivet nut is a hexagonal structure to prevent the rivet nut from rotating during the bolt tightening process. In order to facilitate the connection between the bolt and the bonding tray during the assembly of the reflector, a waist hole is provided on the top surface of the diagonal brace. After the diagonal brace is installed, the projection position of the waist hole basically coincides with the bolt through hole, which is convenient for the tightening tool (usually an electric wrench and an extension rod) to penetrate and tighten the bolt.

[0026] The purlin assembly 2.5 is composed of a purlin 2.5.1 and a rivet nut 2.5.2. The purlin is a groove structure. At the connection position with the support beam, the groove edge is cut off and a rivet nut installation hole is set.

[0027] like Figure 2-3 As shown, in this embodiment, 8 groups of claw assemblies are welded on the main pipe 2.1.1. The support beam assembly 2.2 is placed between the two side plates 2.1.2.1 of the claw assembly, the pin 2.5 is passed through the connection hole, and the cotter pin 2.6 is used to limit the position to prevent it from slipping out; the round hole ends of the diagonal brace are respectively placed in the notches of the support beam assembly, the pin 2.5 is passed through the connection hole, and the cotter pin 2.6 is used to limit the position to prevent it from slipping out, and the diagonal brace with the rivet nut end is placed between the two side plates 2.1.2.1 of the claw assembly, and the rivet nut is connected to the claw side plate 2.1.2.1 by the screw 2.7. The claw side plate 2.1.2.1 will limit the displacement of the support beam assembly 2.2 and the diagonal brace assembly 2.3 along the X direction of the circular tube axis, and the pin 2.6 and the fastener 2.7 are connected to form a stable triangular structure between the support beam assembly and the diagonal brace assembly. The stability and rigidity of the support system of the frame are guaranteed.

[0028] The purlin assembly 2.4 is placed on the support beam assembly 2.2 assembled at 8, and is fastened with screws 2.7 and rivet nuts 2.4.2 on the purlin assembly respectively, so as to realize the fixed connection between the support beam assembly and the purlin assembly, increase the connection stability and rigidity of the support beam assembly along the axis X direction of the circular tube, and increase the rigidity of the entire mirror frame.

[0029] like Figure 3As shown, the claw assembly 2.1.2 is welded integrally by two claw side plates 2.1.2.1, a plurality of (four in this embodiment) welded ribs 2.1.2.2 and welded columns 2.1.2.3. Welded ribs and welded columns are arranged near the connection holes to form a support structure with high structural strength and rigidity. The claw side plate is a triangular structure with a circular hole for the circular steel pipe to pass through and welding grooves arranged at intervals in the middle. The claw side plate is provided with rectangular and circular notches for connecting the welded ribs and welded columns. The two waist edges are bent to improve the bending rigidity of the claw side plate; a rectangular notch is reserved at the bottom edge to facilitate mechanical limiting during the transportation and assembly of the frame. The step size of the welded ribs and welded columns ensures the spacing between the two claw side plates after welding. This spacing satisfies the requirement that after the support beam assembly and the diagonal brace assembly are placed, a gap of about 0 to 1.5 mm is reserved on both sides.

[0030] Based on the above heliostat frame, this embodiment also discloses a heliostat, such as Figure 5 As shown, it includes a reflector 1, a column 3, an electric push rod 4, a rotary reducer 5, and also includes a heliostat frame 2 and a connecting assembly 6 as described above. The rotating shaft support seat is connected to the rotary reducer through the connecting assembly, and the rotary reducer drives the connecting assembly to rotate horizontally around the column. The push rod support seat is connected to the electric push rod through the connecting assembly, and the electric push rod is telescopic to drive the reflector to rotate vertically around the rotating shaft of the supporting flange assembly.

[0031] The reflector 1 (composed of the reflector 1 and the mirror frame 2) of the heliostat is connected to the rotary reducer and the electric push rod through the connecting assembly 6. The mirror frame is connected to the connecting seat 6.3 of the connecting assembly 6 by fixing bolts, and the hole 6.1.8 of the base is connected to the rotary reducer by bolts. The rotary reducer drives the connecting assembly 6 to rotate horizontally around the column to adjust the azimuth angle of the heliostat. The mirror frame is connected to the ear shaft of the electric push rod through the bracket, and the end shaft hole of the electric push rod is connected to the hinge hole 6.1.1 by fixing bolts. The electric push rod is extended and retracted to drive the reflector to rotate vertically around the rotating shaft of the supporting flange assembly to adjust the pitch angle of the heliostat.

[0032] The heliostat consists of 12 reflectors 1, 4 of which are arranged symmetrically along the axis of the main tube, and 3 of which are arranged perpendicular to the axis of the main tube. The reflector lens 1.1 is connected to the adhesive tray 1.3 by an adhesive 1.2 (such as Fig.10 As shown), the bonding tray 1.3 is fixed to the frame by bolt connection to achieve the connection between the lens and the frame; the bonding tray 1.3 is provided with adhesive thickness limiting bumps 1.3.1 (3 in this embodiment, not limited to the specific), such as Fig.11As shown, the convex point 1.3.1 is 0.5mm higher than the bonding surface. Usually, the bonding process is automatically completed by a robot, and the thickness of the adhesive is controlled at about 1mm. The role of the convex point can ensure that when the precision control deviation of the robot is large, the adhesive is at least 0.5mm thick, thereby ensuring the bonding strength.

[0033] like Figure 7-9 As shown, the connection assembly includes an L-shaped support flange 6.1, a rotating shaft 6.2, a connecting seat 6.3, and a sliding bearing 6.4. The top of the L-shaped support flange 6.1 is provided with a mounting hole, and the mounting hole corresponds to the pitch axis 6.1.4 of the heliostat. The bottom of the L-shaped support flange is provided with a base 6.1.5, and the base corresponds to the azimuth axis 6.1.5 of the heliostat. The azimuth axis 6.1.5 and the pitch axis 6.1.4 are perpendicular to each other but do not intersect. The purpose of such a setting is to make the center of mass of the reflector coincide with the pitch axis, thereby reducing the load of the electric push rod.

[0034] The transition connection part between the mounting hole and the base is set as an arc surface structure; the middle position of the mounting hole is the shaft mounting hole 6.1.3; the shaft is installed at the shaft mounting hole, and a sliding bearing 6.4 is set between the shaft and the shaft mounting hole, and an O-ring groove is set in the middle of the shaft corresponding to the sliding bearing; oil seals 6.5 and connecting seats 6.3 are set at both ends of the shaft. One end of the connecting seat is connected to the mirror frame shaft support seat and the other end is matched with the L-shaped support flange.

[0035] The base 6.1.1 is a cylindrical step structure, which can withstand torque or load in all directions and has high rigidity. A hinge hole 6.1.2 is connected to it and matches the shaft hole at the end of the push rod. The center axis 6.1.6 of the hole is parallel to the axis 6.1.4 of the rotating shaft. The bottom flange 6.1.9 of the base is connected to the rotary reducer and corresponds to the azimuth axis 6.1.5 of the heliostat.

[0036] The arc surface structure reserves holes for the electric push rod cable routing (the side elliptical hole 6.1.8) and (the front rounded rectangle 6.1.7); as the electric push rod extends and retracts, a certain length of power supply and communication cables needs to be reserved. To avoid cable sagging and interference with the movement of other components, the cables are bypassed by the torsion tube and passed through the front rounded rectangle 6.1.7 and the side elliptical hole 6.1.8 to connect to the electric control box.

[0037] The thickness of each structure of the L-shaped support flange is basically uniform, the joints are all rounded, and it is cast in one piece, which can avoid casting defects caused by internal stress concentration and has a high yield rate.

[0038] According to the distance f from the center point of the reflective surface to the heat absorber, it is necessary to adjust the surface curvature radius R of the reflector, that is, adjust the support point elevation of the reflector. The specific implementation method is as follows: The connection hole groups 1-8 on each claw assembly of the twisted tube are processed so that the relative positions between the connection hole groups form an arc height difference along the axis of the circular tube to adjust the curvature of the reflector in the X direction. The specific height difference value needs to be based on the spacing between the claw assemblies and the curvature requirements of the heliostat, and the deformation value of the reflector on the twisted tube assembly due to gravity is compensated to obtain the height difference value comprehensively.

[0039] Along the length direction of the support beam, at the bolt holes of the reflector bonding tray, adjustment gaskets 2.2.2 of different thicknesses are arranged, and the relative positions of the top surfaces of the gaskets form an arc height difference along the length direction of the support beam to achieve the Y-direction curvature adjustment of the reflector. The specific height difference value needs to be based on the spacing between the bonding points of the reflector and the curvature requirements of the heliostat, and compensate for the deformation value of the reflector lens under the action of gravity on the support beam assembly, and comprehensively obtain the thickness value of the adjustment gasket.

[0040] When the curvature radius R in the X and Y directions satisfies: R=2f, the astigmatism of the spot size reflected to the absorber is small.

[0041] Usually, heliostats with several curvatures are set up in engineering applications according to the scale of the heliostat field and the distance from the absorber. Generally, a heliostat assembly plant is arranged at the construction site. The construction of the mirror field is usually carried out step by step from the inside to the outside or from the outside to the inside. The assembly curvature of the heliostat is determined according to the construction progress. The connection hole group on the twisted tube assembly is processed in the assembly plant based on the curvature requirements. The adjustment gasket is set to several gaskets of different thicknesses, which are installed in combination according to the thickness requirements. Therefore, the surface curvature of the heliostat reflector can be easily adjusted by adjusting the position of the processing hole group and adjusting the thickness of the gasket, without affecting the supply of parts and the assembly process.

[0042] Taking into account the use environment of the heliostat, the torsion tube is hot-dip galvanized for protection. The support beams, diagonal braces and purlins are made of zinc-aluminum-magnesium plates. The connecting pins and fasteners are made of stainless steel or Dacromet surface treatment, so that the entire mirror frame has good corrosion resistance.

[0043] In order to make the center of mass of the reflector (consisting of a reflector 1 and a mirror frame 2) pass through the center of the hole of the shaft support seat, the middle connecting hole of the support beam assembly is offset relative to the center, so that the length L5 of the support beam close to the shaft support seat is greater than the length L6 of the support beam at the other end; the circular holes at both ends of the support beam assembly used for connection with the diagonal brace assembly are basically the same distance relative to the two ends of the support beam, and the length of the diagonal brace assembly close to the shaft support seat is greater than the length of the diagonal brace assembly close to the push rod support seat.

[0044] like Figure 6 As shown in the figure, in order to accurately control the pitch angle of the heliostat by controlling the extension and retraction of the electric push rod, the structural dimensions of each component should satisfy the following relationship: The line L1 (fixed length) connecting the center of the shaft support hole (through the overall center of mass of the reflector) and the center of the push rod support hole, the line L2 (fixed length) connecting the center of the support flange shaft hole and the center of the push rod hinge hole, and the line L3 (changing with the extension and retraction of the electric push rod) connecting the center of the push rod ear axis and the end shaft hole form the pitch motion relationship of the reflector. The angle between L1 and L2 is A. According to the cosine theorem: L3 2 =L1 2 +L2 2 -2*L1*L2*cosA, we can know the relationship between the change of L3 and the adjustment of the pitch angle. And the length L4 from the push rod ear axis to the end must meet the kinematic verification to avoid interference with the reflective lens within the pitch angle adjustment range (0-90°).

[0045] After the twist tube is welded as a whole, process holes 1-6 are processed that are perpendicular to the positioning reference plane P and symmetrically penetrate the central cross section of the main tube. Specifically, two holes are set in a pair of claw assemblies near the middle, which serve as process holes 3-4 for hoisting the twist tube assembly. A hook is used to hang in these two holes to hoist and carry the twist tube assembly. Two holes (process holes 1-2 and process holes 5-6) are set in the claw assemblies near both ends, which serve as process holes for the assembly process of the support beam assembly, the diagonal support assembly, the reflector and the twist tube assembly. If a matching round rod (preferably made of steel) is used, after passing through the round hole, the round rod can be clamped to assist in preventing the twist tube from shaking and fix the twist tube assembly. Another function is that after the mirror frame and the reflector are assembled to form a reflector as a whole, when it is installed with the column, a crane is used to hang the round rod to achieve the transfer and installation of the reflector.

[0046] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A heliostat frame, characterized in that: It includes a torsion tube assembly, a support beam assembly, a diagonal brace assembly, and a purlin assembly. The torsion tube assembly includes a main pipe, a claw assembly, and a support seat. A through hole for the main pipe to pass through is arranged in the middle position of the claw assembly, and a support seat is arranged on the main pipe. The claw assembly is a triangular structure; a plurality of claw assemblies are arranged on the main pipe, and each of the claw assemblies is connected to a group of support beam assemblies and two groups of diagonal brace assemblies. The support beam assembly passes through a vertex of the claw assembly, and one end of the two groups of diagonal brace assemblies are respectively connected to the remaining two vertices of the claw assembly, and the other end is connected to the support beam assembly; both ends of the support beam assembly are connected to the purlin assembly.

2. A heliostat frame according to claim 1, characterized in that: The clamping jaw assembly includes two clamping jaw side plates, a welded rib plate, and a welded column. The clamping jaw side plates are triangular structures. A through hole for the main pipe to pass through is arranged in the middle of the clamping jaw side plates. The two clamping jaw side plates are connected by welding rib plates and welding columns. A rectangular notch is arranged on the bottom edge of the clamping jaw side plates. The two waists of the clamping jaw side plates are bent.

3. The heliostat frame according to claim 1, characterized in that: The support seat comprises a push rod support seat and a rotating shaft support seat. The push rod support seat and the rotating shaft support seat are symmetrical with respect to the central cross section of the main pipe. The push rod support seat and the rotating shaft support seat are connected to the main pipe by welding a reinforcing plate.

4. The heliostat frame according to claim 1, characterized in that: The support beam assembly includes a support beam and an adjusting gasket. The support beam and the adjusting gasket are detachably connected. The cross-section of the support beam is a groove-shaped structure, and the support beam corresponding to the groove edge position is bent.

5. A heliostat frame according to claim 4, characterized in that: The top of the support beam is provided with a mounting hole for fixing the reflector, a connecting hole for fixing the adjusting gasket, and a fixing hole for fixing the purlin assembly, and the side of the support beam is provided with a pin connecting hole.

6. The heliostat frame according to claim 1, characterized in that: The diagonal brace assembly includes a diagonal brace and a rivet nut. The cross-section of the diagonal brace is a groove-shaped structure, and is bent at the groove edge line; the purlin assembly includes a purlin and a rivet nut. The purlin is a groove-shaped structure, and the groove edge is cut off at the connection position with the support beam, and a rivet nut installation hole is set.

7. A heliostat, comprising a reflector, a column, an electric push rod, and a rotary reducer, characterized in that: It also includes a heliostat frame and a connecting assembly as described in any one of claims 1 to 6, wherein the rotating shaft support seat is connected to a rotary reducer through a connecting assembly, and the rotary reducer drives the connecting assembly to rotate horizontally around a column, and the push rod support seat is connected to an electric push rod through a connecting assembly, and the electric push rod is telescopic to drive the reflector to rotate vertically around the rotating shaft of the supporting flange assembly.

8. A heliostat according to claim 7, characterized in that: The connecting assembly comprises an L-shaped supporting flange, a rotating shaft and a connecting seat. A mounting hole is arranged on the top of the L-shaped supporting flange, and the mounting hole corresponds to the pitch axis of the heliostat. A base is arranged on the bottom of the L-shaped supporting flange, and the base corresponds to the azimuth axis of the heliostat. The azimuth axis and the pitch axis are perpendicular to each other but do not intersect. A transition connecting portion between the mounting hole and the base is arranged as an arc surface structure. The middle position of the mounting hole is a rotating shaft mounting hole, and the rotating shaft is installed at the rotating shaft mounting hole. A sliding bearing is arranged between the rotating shaft and the rotating shaft mounting hole, and an O-ring groove is arranged in the middle of the rotating shaft corresponding to the sliding bearing. Oil seals and connecting seats are arranged at both ends of the rotating shaft.

9. The heliostat according to claim 7, characterized in that: The reflectors are provided with 12 pieces, 4 of which are symmetrically arranged along the axis of the main tube, and 3 are arranged perpendicular to the axis of the main tube; the lenses of the reflectors are connected to the adhesive tray by adhesive, and the adhesive tray is fixed to the frame by bolt connection.

10. The heliostat according to claim 9, characterized in that: The bonding tray is provided with adhesive thickness limiting protrusions, and the protrusions are 0.5 mm higher than the bonding surface.

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