Heliostat bracket and heliostat

Abstract

The utility model discloses a heliostat frame and a heliostat, and relates to the technical field of solar photo-thermal power generation, the heliostat frame comprises a main support beam, a triangular auxiliary support beam and an inclined support beam, the heliostat is arranged on the auxiliary support beam, the main support beam comprises a first main support beam and a second main support beam, the first main supporting beam is located at the vertex of a triangle, the second main supporting beam is fixedly connected with the auxiliary supporting beam through a first connecting module, and the first main supporting beam and the second main supporting beam are fixedly connected through a plurality of second connecting modules; one end of the inclined supporting beam is fixedly connected to the second connecting module through a third connecting module, and the other end of the inclined supporting beam is fixedly connected to the auxiliary supporting beam through a fourth connecting module. The utility model has the advantages of high mirror bracket rigidity, high angle precision and high expandability.

Description

Technical Field

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

[0002] With the increasing popularity and development of tower-type solar thermal power generation, the scale of the mirror field of tower-type solar thermal power stations is also expanding. Therefore, the cost of heliostats needs to be further reduced. At the same time, the accuracy requirements for the angle of heliostats have increased instead of decreased. In the prior art, the cost is reduced by using small heliostats, and the mirror area is increased as much as possible on the basis of the small heliostat structure, and then the higher angle accuracy requirements are achieved through on-site debugging. However, in the heliostats in the prior art, the components of the mirror frame are connected by pins or screws to form a hinged pair. However, the components will produce relative rotational deformation after being stressed, so the deformation will be transmitted to the adjacent connection section after local stress. Most of the existing mirror frame components are thin-walled profiles, and the rigidity of the joints is poor, especially the bolted joints are easy to loosen. Therefore, under large wind loads, the angular accuracy of the heliostat operation is difficult to guarantee. Moreover, due to the connection method between components, once the mirror area of ​​the heliostat is expanded, it will be difficult to guarantee the angle accuracy. Therefore, the existing heliostat mirror frame makes it difficult to further increase the mirror area. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model provides a heliostat frame, which has the advantages of high frame rigidity, high angle accuracy and high scalability.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A heliostat frame, comprising a main support beam, a plurality of secondary support beams and a plurality of oblique support beams, wherein the secondary support beam and the oblique support beam are connected in a triangle shape and are arranged at intervals in the length direction of the main support beam, and the heliostat is mounted on the secondary support beam, the main support beam comprises a first main support beam and a second main support beam, the first main support beam is located at the vertex position formed by the two oblique support beams, the second main support beam is fixedly connected to the secondary support beam through a first connection module, the first main support beam and the second main support beam are fixedly connected through a plurality of second connection modules, and the plurality of second connection modules are arranged along the length direction of the main support beam;

[0006] One end of the oblique support beam is fixedly connected to the second connection module through a third connection module, and the other end is fixedly connected to the auxiliary support beam through a fourth connection module.

[0007] The technical solution provided by the utility model tightly connects each thin-walled component into an integral mirror frame with good rigidity, which can greatly improve the rigidity of the main support beam without increasing the cross-sectional area of ​​the main support beam, thereby further increasing the mirror area of ​​the small heliostat, and further reducing the unit mirror area cost of the heliostat. The components are changed from hinged to fixed connection through the connection module, and the components will not rotate and deform relative to each other after being stressed, and the local deformation will not be transmitted to the adjacent connection section, which solves the problem of loose bolts, not only making the focusing accuracy of the heliostat more reliable and stable, but also maintaining a high accuracy under large wind loads.

[0008] The technical solution provided by the utility model greatly increases the bending rigidity of the main support beam under the condition of unchanged total cross-section, thereby expanding the mirror area of ​​the heliostat by at least 10% to 33 square meters, and reducing the cost of the heliostat by more than 10%.

[0009] Optionally, the first connecting module is provided with a main beam mounting groove and a secondary beam fixing groove, the secondary beam fixing groove and the main beam mounting groove are located at two ends of the first connecting module, the second main support beam is located in the main beam mounting groove, and the secondary support beam is fixed to the secondary beam fixing groove.

[0010] Optionally, the auxiliary beam fixing groove and the auxiliary support beam are fixedly connected by at least two pins.

[0011] The utility model utilizes the over-constraint principle, and the auxiliary support beam and the first connecting module are fixedly connected by two pins, forming an over-constraint between the two, thus converting the hinge between the two into a fixed connection, and completely eliminating the rotation between the auxiliary support beam and the first connecting module.

[0012] Optionally, the second connecting module has a first mounting slot and a second mounting slot, the first main supporting beam is located in the first mounting slot, and the second main supporting beam is located in the second mounting slot.

[0013] The main support beam is generally made of round tube, and its deflection f B The deformation formula is:

[0014]

[0015] Where q is a uniformly distributed load and is independent of the area, I is the moment of inertia of the main support beam, E is the elastic modulus, which is a constant, and L is the length of the main support beam, which increases with the increase of the mirror area.

[0016] The calculation formula of the main support beam moment of inertia I is:

[0017]

[0018] Where D is the outer diameter of the main support beam and d is the inner diameter of the main support beam.

[0019] Substitute the moment of inertia I value of the main support beam into the deflection deformation formula:

[0020]

[0021] The calculation formula for the cross-sectional area S of the main support beam is:

[0022]

[0023] Substitute the cross-sectional area S value into the deflection deformation formula:

[0024]

[0025] The main support beam is a thin-walled member, d / D≈1, and the above formula can be simplified to:

[0026]

[0027] If the d / D value remains unchanged, the cross-sectional area S is proportional to the square of D, and therefore L / D is proportional.

[0028] The calculation formula of the mass Ms of the main support beam

[0029] M s =ρSL (2-7)

[0030] Where ρ is the density of the main support beam.

[0031] It can be seen from equations (2-6) and (2-7) that the mass Ms of the main support beam is proportional to the cube of the length L of the main support beam.

[0032] From the above, it can be seen that in the present invention, when the mirror frame of the heliostat is kept unchanged and the area of ​​the mirror surface is increased, the mass Ms of the main support beam will be greatly increased.

[0033] According to the definition of section inertia moment and parallel axis shift formula, the rigidity of the mirror frame can be greatly increased by connecting the two main support beams using the second connection module, thereby increasing the mirror area under the condition that the deflection does not exceed the allowable value.

[0034] The main support beam and the second connection module are welded to form the main support beam assembly, and the distances between their centroids are d1 and d2 respectively. According to the definition of moment of inertia and the parallel axis shift formula, the moment of inertia of the new main support beam is:

[0035]

[0036] Where I1 is the moment of inertia of the main support beam itself, A1 is the cross-sectional area of ​​the main support beam, d1 is the distance from the centroid of the second main support beam to the centroid of the main support beam assembly, and d2 is the distance from the centroid of the first main support beam to the main support beam assembly.

[0037] It can be seen from the formula that, while keeping the main support beam's own moment of inertia I1 unchanged, as d1 and d2 increase, the main support beam's own moment of inertia I x will also increase.

[0038] When d1=d2=d, I x =10*I1, d is the diameter of the main support beam;

[0039] The diameter of the main support beam with a cross-sectional area of ​​2*A1 is 2d, and the corresponding moment of inertia is Ix'=8*I1;

[0040] That is, when d1=d2=d, the moment of inertia of the two main support beams connected by the second connection module is increased by 25% compared with the single main support beam of the same mass. As d1 and d2 further increase, the moment of inertia gain effect generated by the second connection module connecting the main support beams becomes more obvious, and under the condition of the same deflection, a larger mirror area can be carried.

[0041] Optionally, the main support beam also includes an intermediate main support beam, the second connecting module is provided with a support hole, the support hole is located between the first mounting slot and the second mounting slot, and the intermediate main support beam is fixed between the first main support beam and the second main support beam through the support hole.

[0042] Optionally, the third connecting module includes a concave connecting part having a groove and a convex connecting part having a protrusion, the concave connecting part is fixedly connected to the second connecting module, the convex connecting part is fixedly connected to the oblique support beam, and the protrusion is inserted into the groove and fixed so that the oblique support beam is fixedly connected to the second connecting module.

[0043] Optionally, the concave connection portion and the convex connection portion are fixedly connected by a screw, and the screw passes through the bottom of the groove and enters the protrusion.

[0044] There are both axial force and bending moment at the connection between the oblique support beam and the third connecting module. The utility model uses the third connecting module for connection, and the force of the oblique support beam is directly applied to the third connecting module, while the connecting bolts only play the role of internal connection and do not bear the force of the oblique support beam. Therefore, the bolts are not affected by external loads and will not loosen after pre-tightening.

[0045] The bottom side of the convex connection part is parallel to the oblique support beam, and the two side sides of the protrusion are perpendicular to the bottom side. When the oblique support beam is subjected to axial force, the force is directly applied to the concave connection block through the side and top sides of the convex connection part. Therefore, the connecting bolts are not affected by the axial force of the oblique support beam and will not loosen after pre-tightening. This can effectively solve the problem of bolt loosening under long-term alternating loads when the oblique support beam and the second connection module are directly connected by bolts. At the same time, the connection here is a rigid connection, and there is no freedom of relative rotation between the oblique support beam and the second connection module.

[0046] When the concave connection is subjected to the axial force of the oblique support beam, there is a reaction force on the convex connection. The reaction force can be decomposed into a horizontal reaction force and a vertical reaction force. The horizontal reaction force and the vertical reaction force also act on the concave connection. When the oblique support beam is subjected to the axial force of the concave connection, the directions of the aforementioned horizontal reaction force and the vertical reaction force are also opposite. In this process, because the angle between the oblique support beam and the horizontal direction is small, the clockwise bending moment effect on the concave connection is also small. The concave connection is a solid structure with great rigidity, so the deformation generated can be almost ignored.

[0047] Optionally, the fourth connecting module includes a sub-beam connecting portion and an oblique beam connecting portion, both of which are cubic in shape, the oblique beam connecting portion is located on one side of the sub-beam connecting portion, the sub-support beam is fixedly connected to the sub-beam connecting portion by screws, and the oblique support beam is fixedly connected to the oblique beam connecting portion by screws.

[0048] The fourth connection module is a solid with a certain thickness and good rigidity, and will hardly deform when subjected to force after connection. The secondary support beam and the fourth connection module are fixedly connected, and the connection direction is parallel to the direction of the wind load, so the six degrees of freedom are completely constrained between each other, and there will be no relative rotation between each other.

[0049] In addition, the utility model further provides a heliostat, comprising a heliostat body and any one of the heliostat frames described above, wherein the heliostat body is mounted on the secondary support beam.

[0050] The beneficial effects of the heliostat provided by the present invention are similar to the beneficial effects of the aforementioned heliostat frame, and will not be described in detail herein.

[0051] These features and advantages of the utility model will be disclosed in detail in the following specific embodiments and drawings. The best implementation or means of the utility model will be fully presented in conjunction with the drawings, but it is not a limitation of the technical solution of the utility model. In addition, these features, elements and components appearing in each of the following texts and drawings are multiple, and are marked with different symbols or numbers for convenience, but all represent components with the same or similar structure or function. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The utility model is further described below in conjunction with the accompanying drawings:

[0053] Figure 1 It is an overall schematic diagram of an embodiment of the utility model;

[0054] Figure 2 A side view of an embodiment of the utility model;

[0055] Figure 3 This is a three-dimensional schematic diagram of a first connection module in an embodiment of the utility model;

[0056] Figure 4 This is a three-dimensional schematic diagram of the second connection module in the embodiment of the utility model;

[0057] Figure 5 It is a three-dimensional schematic diagram of the concave connecting portion in the embodiment of the utility model;

[0058] Figure 6 It is a three-dimensional schematic diagram of the convex connection part in the embodiment of the utility model;

[0059] Figure 7 This is a three-dimensional schematic diagram of a third connection module in an embodiment of the utility model;

[0060] Figure 8 This is a three-dimensional schematic diagram of a fourth connection module in an embodiment of the utility model;

[0061] Fig. 9 It is a side view of the fourth connection module in the embodiment of the utility model;

[0062] Fig.10 It is a three-dimensional schematic diagram of a heliostat in an embodiment of the utility model.

[0063] Among them, 1-heliostat frame, 11-first main support beam, 12-second main support beam, 2-secondary support beam, 3-inclined support beam, 4-first connecting module, 41-main beam mounting groove, 42-secondary beam mounting groove, 43-pin hole, 5-second connecting module, 51-first mounting groove, 52-second mounting groove, 6-third connecting module, 61-concave connecting part, 611-groove, 612-first fixing screw hole, 62-convex connecting part, 621-protrusion, 622-second fixing screw hole, 623-first connecting hole, 63-fixing bolt, 7-fourth connecting module, 71-secondary beam connecting part, 711-second connecting hole, 72-inclined beam connecting part, 721-third connecting hole, 8-heliostat body, 9-pillar. DETAILED DESCRIPTION

[0064] The following is a detailed description of embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments in the implementation manner are intended to be used to explain the present invention and should not be construed as limiting the present invention.

[0065] References in this specification to "one embodiment" or "an example" or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment of the present patent disclosure. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0066] Example:

[0067] like Figure 1 and Figure 2 As shown, this embodiment provides a heliostat frame, including a main support beam, a plurality of auxiliary support beams 2 and a plurality of oblique support beams 3, and the auxiliary support beams 2 and the oblique support beams 3 are both trough beams formed by bending plates. The plate can not only ensure strength after bending, but also take into account cost and lightness. The auxiliary support beam 2 and the oblique support beam 3 are connected in a triangle, and are arranged at intervals in the length direction of the main support beam, and the heliostat is installed on the auxiliary support beam 2. It should be pointed out that the two oblique support beams 3 forming the triangle are not necessarily of equal length. The lengths of the two oblique support beams 3 are set by those skilled in the art according to engineering requirements and are not limited here. With the help of the stability of the triangle, the heliostat is stably installed on the auxiliary support beam 2 of the heliostat frame.

[0068] The main support beam includes a first main support beam 11 and a second main support beam 12. In this embodiment, the first main support beam 11 and the second main support beam 12 are circular pipes. In other embodiments, they can also be square pipes, round rods or square rods, which are not limited here. In this embodiment, circular pipes are preferably used. The two main support beams are arranged up and down, the first main support beam 11 is located at the bottom, that is, the vertex position formed by the two oblique support beams 3, and the second main support beam 12 is located at the top, and is fixedly connected to the auxiliary support beam 2 through the first connection module 4. The first main support beam 11 and the second main support beam 12 are fixedly connected through a plurality of second connection modules 5, and the plurality of second connection modules 5 are arranged along the length direction of the main support beam. The number of the second connection modules 5 is consistent with the number of triangles formed by the auxiliary support beam 2 and the oblique support beam 3. One end of the oblique support beam 3 is fixedly connected to the second connection module 5 through the third connection module 6, and the other end is fixedly connected to the auxiliary support beam 2 through the fourth connection module 7.

[0069] like Figure 3As shown, the first connection module 4 is in the shape of a square table and is formed by bending a metal sheet. The bending of the metal sheet can not only ensure strength, but also take into account cost and lightness. The first connection module 4 is provided with a main beam mounting groove 41 and a secondary beam fixing groove 42. The main beam mounting groove 41 is located below the first connection module 4, and its shape and size are adapted to the shape and size of the second main support beam 12. The second main support beam 12 is located in the main beam mounting groove 41 and is fixed to the first connection module 4 by welding. The secondary beam fixing groove 42 is located above the first connection module 4, and its side wall is provided with a pin hole 43. In this embodiment, two pin holes 43 are provided. The secondary support beam 2 is in the secondary beam fixing groove 42, and a pin hole is also provided at its corresponding position. The pin extends into the pin hole, and the secondary support beam 2 is fixed in the secondary beam fixing groove 42 by two pins. In order to ensure that the auxiliary support beam 2 is stable in the auxiliary beam fixing groove 42, at least two pairs of pin holes and their matching pins are provided. The more the number is, the more stable the auxiliary support beam 2 is in the auxiliary beam fixing groove 42. By utilizing the over-constraint principle, the auxiliary support beam and the first connecting module are fixedly connected by two pins, forming an over-constraint between the two, thus converting the hinge between the two into a fixed connection, completely eliminating the rotation between the auxiliary support beam 2 and the first connecting module 4.

[0070] like Figure 4 As shown, the second connection module 5 is also formed by bending a metal plate and has a first mounting groove 51 and a second mounting groove 52. The first main support beam 11 is located in the first mounting groove 51 and is welded to the first mounting groove 51, and the second main support beam 12 is located in the second mounting groove 52 and is welded to the second mounting groove 52.

[0071] In this embodiment, the main support beam is made of round pipe, and its deflection f B The deformation formula is:

[0072]

[0073] Where q is a uniformly distributed load and is independent of the area, I is the moment of inertia of the main support beam, E is the elastic modulus, which is a constant, and L is the length of the main support beam, which increases with the increase of the mirror area.

[0074] The calculation formula of the main support beam moment of inertia I is:

[0075]

[0076] Where D is the outer diameter of the main support beam and d is the inner diameter of the main support beam.

[0077] Substitute the moment of inertia I value of the main support beam into the deflection deformation formula:

[0078]

[0079] The calculation formula for the cross-sectional area S of the main support beam is:

[0080]

[0081] Substitute the cross-sectional area S value into the deflection deformation formula:

[0082]

[0083] The main support beam is a thin-walled member, d / D≈1, and the above formula can be simplified to:

[0084]

[0085] If the d / D value remains unchanged, the cross-sectional area S is proportional to the square of D, and therefore L / D is proportional.

[0086] The calculation formula of the mass Ms of the main support beam

[0087] M s =ρSL (2-7)

[0088] Where ρ is the density of the main support beam.

[0089] It can be seen from equations (2-6) and (2-7) that the mass Ms of the main support beam is proportional to the cube of the length L of the main support beam.

[0090] It can be seen that if the frame of the heliostat remains unchanged and the area of ​​the mirror increases, the mass Ms of the main support beam will increase significantly.

[0091] According to the definition of section inertia moment and the parallel axis shift formula, the rigidity of the mirror frame can be greatly increased by connecting the first main support beam 11 and the second main support beam 12 using the second connection module 5, thereby increasing the mirror area without exceeding the allowable deflection value.

[0092] The first main support beam 11 and the second main support beam 12 are welded by the second connection module 5 to form a main support beam assembly, and the distances between their centroids are d1 and d2 respectively. According to the definition of moment of inertia and the parallel axis shift formula, the moment of inertia of the new main support beam is:

[0093]

[0094] Wherein I1 is the moment of inertia of the main support beam itself, A1 is the cross-sectional area of ​​the main support beam, d1 is the distance from the centroid of the second main support beam 12 to the centroid of the main support beam assembly, and d2 is the distance from the centroid of the first main support beam 11 to the main support beam assembly.

[0095] It can be seen from the formula that, while keeping the main support beam's own moment of inertia I1 unchanged, as d1 and d2 increase, the main support beam's own moment of inertia I x will also increase.

[0096] When d1=d2=d, I x =10*I1, d is the diameter of the main support beam;

[0097] The diameter of the main support beam with a cross-sectional area of ​​2*A1 is 2d, and the corresponding moment of inertia is Ix'=8*I1;

[0098] That is, when d1=d2=d, the moment of inertia of the two main support beams connected by the second connection module 5 is increased by 25% relative to the moment of inertia of a single main support beam of the same mass. As d1 and d2 further increase, the moment of inertia gain effect generated by the second connection module 5 connecting the main support beams becomes more and more obvious, and under the condition of the same deflection, a larger mirror area can be carried.

[0099] In other embodiments, the main support beam may further include an intermediate main support beam, which is located between the first main support beam 11 and the second main support beam 12. Accordingly, the second connection module 5 is provided with a support hole, the shape and size of the support hole are adapted to the shape and size of the intermediate main support beam, and is located between the first mounting groove and the second mounting groove. The intermediate main support beam is fixed between the first main support beam and the second main support beam through the support hole. Multiple intermediate main support beams may be provided, and as the number of intermediate main support beams increases, the rigidity of the main support beam assembly becomes stronger, and the rigidity of the heliostat frame as a whole will also be enhanced accordingly.

[0100] The third connection module 6 includes a female connection portion 61 having a groove 611 and a male connection portion 62 having a protrusion 621 .

[0101] The concave connection portion 61 is fixedly connected to the second connection module 5. Figure 5 As shown, the groove 611 is arranged at the middle position of the concave connecting portion 61, and a through first fixing screw hole 612 is arranged at the bottom of the groove 611. The convex connecting portion 62 is fixedly connected to the oblique support beam 3, as shown in FIG. Figure 6 As shown, the male connection part 62 is in an inverted T shape, the protrusion 621 is arranged in the middle of the male connection part 62, and a second fixing screw hole 622 is arranged on the top of the protrusion 621, and the second fixing screw hole 622 is a blind hole. On both sides of the protrusion 621, through first connection holes 623 are respectively arranged, and the male connection part 62 is fixedly connected to the oblique support beam 3 through the first connection holes 623.

[0102] The cooperation between the concave connection part 61 and the convex connection part 62 is as follows Figure 7As shown. The side of the concave connection part 61 connected to the second connection module 5 is perpendicular to the bottom surface of the groove 611, but the groove wall of the groove 611 forms a certain angle with the groove bottom surface. In the convex connection part 62, the height direction of the protrusion 621 is perpendicular to the bottom of the convex connection part 62, and the bottom of the convex connection part 62 is in contact with the oblique support beam 3. Therefore, when the protrusion 621 is inserted into the groove 611, its height direction must not be perpendicular to the groove bottom surface of the groove 611. Furthermore, the angle between the groove wall of the groove 611 and the groove bottom surface is the angle between the height direction of the protrusion 621 and the groove bottom surface of the groove 611. The bottom surface of the groove 611 is perpendicular to the side of the concave connection part 61 connected to the second connection module 5. Therefore, the top surface of the protrusion 621 forms a certain angle with the height direction of the protrusion 621, and the angle is determined by the angle between the oblique support beam 3 and the horizontal or vertical.

[0103] The protrusion 621 of the male connection part 62 is inserted into the groove 611 of the female connection part 61, the top surface of the protrusion 621 coincides with the bottom surface of the groove 611, the side surface of the protrusion 621 coincides with the side surface of the groove 611, and the bottom of the male connection part 62 may be in contact with the female connection part 61, or there may be a gap of a certain width, which is not limited here. The fixing bolt 63 is screwed in along a direction perpendicular to the bottom surface of 611, passes through the first fixing screw hole 612 of the female connection part 61, and enters the second fixing screw hole 622 of the male connection part 62. After pre-tightening, the assembly of the third connection module 6 is completed, so that the oblique support beam 3 is fixedly connected to the second connection module 5. The bottom side direction of the male connection part 62 is parallel to the oblique support beam 3, and the side side of the protrusion 621 is perpendicular to the bottom side direction. When the oblique support beam 3 is subjected to axial force, the force is directly applied to the female connection block 61 through the side and top sides of the male connection part 62. Therefore, the connecting bolts are not affected by the axial force of the oblique support beam 3 and will not loosen after pre-tightening. In this way, the problem of bolt loosening under long-term alternating loads when the oblique support beam 3 and the second connecting module 5 are directly connected by bolts can be effectively solved. At the same time, the connection here is a rigid connection, and there is no freedom of mutual rotation between the oblique support beam 3 and the second connecting module 5. After the concave connecting portion 61 is affected by the axial force of the oblique support beam 3, there is a reaction force on the convex connecting portion 62, and the reaction force can be decomposed into a horizontal reaction force and a vertical reaction force. The horizontal reaction force and the vertical reaction force also act on the concave connecting portion 61. When the oblique support beam 3 is affected by the axial force of the concave connecting portion 61, the directions of the aforementioned horizontal reaction force and vertical reaction force are also opposite. In this process, because the angle between the oblique support beam 3 and the horizontal direction is small, the clockwise bending moment effect on the concave connecting portion 61 is also small, and the concave connecting portion 61 is a solid structure with greater rigidity, so the deformation generated can be almost ignored.

[0104] There are both axial force and bending moment at the connection between the oblique support beam 3 and the third connecting module 6. In this embodiment, the third connecting module 6 is used to connect the two, and the force of the oblique support beam 3 is directly applied to the third connecting module 6, while the connecting bolts only serve as internal connections and do not bear the force of the oblique support beam 3. Therefore, the bolts are not affected by external loads and will not loosen after pre-tightening.

[0105] like Figure 8 and Fig. 9 As shown, the fourth connection module 7 includes a secondary beam connection portion 71 and an oblique beam connection portion 72. The oblique beam connection portion 72 is located on one side of the secondary beam connection portion 71, and both are in a cubic shape. Fig. 9 The height dimension of the diagonal beam connecting portion 72 is greater than the cube in the Fig. 9 The secondary beam connection part 71 is provided with a second connection hole 711, which is a blind hole and has a radial direction along the height direction of the secondary beam connection part 71, and the oblique beam connection part 72 is provided with a third connection hole 721, which is a through hole and has a radial direction along the height direction of the oblique beam connection part 72.

[0106] When the fourth connection module 7 connects the auxiliary support beam 2 and the oblique support beam 3, the auxiliary beam connection part 71 is inserted into the groove formed by the bending of the auxiliary support beam 2, and the screw passes through the auxiliary support beam 2 from the outside of the auxiliary support beam 2 and is screwed into the second connection hole 711 and pre-tightened. The oblique beam connection part 72 is outside the groove formed by the bending of the oblique support beam 3 and contacts one side of the groove bottom, and the screw passes through the third connection hole 721 and the oblique support beam 3 and is pre-tightened by the nut. Since the auxiliary support beam 2 and the oblique support beam 3 have a certain angle, the cube formed by the auxiliary beam connection part 71 is Fig. 9 The height direction of the cube formed by the inclined beam connecting part 72 is Fig. 9 The height direction of the auxiliary support beam 2 is at a certain angle, and the specific angle value is consistent with the angle between the auxiliary support beam 2 and the oblique support beam 3. The fourth connection module 7 is a solid with a certain thickness and good rigidity. After the connection, it will hardly deform when subjected to force. The auxiliary support beam 2 and the fourth connection module 7 are fixedly connected, and the connection direction is parallel to the direction of the wind load. Therefore, the six degrees of freedom are completely constrained between each other, and there will be no relative rotation between each other.

[0107] This embodiment tightly connects each thin-walled component into an integral mirror frame with good rigidity, which can greatly improve the rigidity of the main support beam without increasing the cross-sectional area of ​​the main support beam, thereby further increasing the mirror area of ​​the small heliostat, and further reducing the unit mirror area cost of the heliostat. The components are changed from hinged to fixed connection through the connection module, and the components will not rotate and deform relative to each other after being stressed, and the local deformation will not be transmitted to the adjacent connection section, which solves the problem of loose bolts, not only making the focusing accuracy of the heliostat more reliable and stable, but also maintaining a high accuracy under a large wind load, and greatly increasing the bending rigidity of the main support beam under the condition of unchanged total cross-section, thereby expanding the mirror area of ​​the heliostat, which can be increased by at least 10% to 33 square meters, and the cost of the heliostat is reduced by more than 10%.

[0108] In addition, this embodiment also provides a heliostat, such as Fig.10 As shown, it includes a heliostat body 8 and the aforementioned heliostat frame 1 , the heliostat frame 1 is mounted on the top of a support column 9 , and the heliostat body 8 is mounted on a secondary support beam of the heliostat frame 1 .

[0109] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention shall be included in the scope of the claims.

Claims

1. A heliostat frame, comprising a main support beam, a plurality of auxiliary support beams and a plurality of oblique support beams, wherein the auxiliary support beams and the oblique support beams are connected in a triangular shape and are arranged at intervals in the length direction of the main support beam, and the heliostat is mounted on the auxiliary support beams, characterized in that: The main support beam comprises a first main support beam and a second main support beam, the first main support beam is located at the vertex formed by the two oblique support beams, the second main support beam is fixedly connected to the auxiliary support beam via a first connection module, the first main support beam and the second main support beam are fixedly connected via a plurality of second connection modules, and the plurality of second connection modules are arranged along the length direction of the main support beam; One end of the oblique support beam is fixedly connected to the second connection module through a third connection module, and the other end is fixedly connected to the auxiliary support beam through a fourth connection module.

2. The heliostat frame according to claim 1, characterized in that: The first connecting module is provided with a main beam mounting groove and a secondary beam fixing groove, the secondary beam fixing groove and the main beam mounting groove are located at two ends of the first connecting module, the second main support beam is located in the main beam mounting groove, and the secondary support beam is fixed to the secondary beam fixing groove.

3. The heliostat frame according to claim 2, characterized in that: The auxiliary beam fixing groove and the auxiliary support beam are fixedly connected by at least two latches.

4. The heliostat frame according to claim 1, characterized in that: The second connection module has a first mounting slot and a second mounting slot, the first main support beam is located in the first mounting slot, and the second main support beam is located in the second mounting slot.

5. The heliostat frame according to claim 4, characterized in that: The main support beam also includes an intermediate main support beam. The second connecting module is provided with a support hole, the support hole is located between the first mounting slot and the second mounting slot, and the intermediate main support beam is fixed between the first main support beam and the second main support beam through the support hole.

6. The heliostat frame according to claim 1, characterized in that: The third connection module includes a concave connection part having a groove and a convex connection part having a protrusion, the concave connection part is fixedly connected to the second connection module, the convex connection part is fixedly connected to the oblique support beam, and the protrusion is inserted into the groove and fixed so that the oblique support beam is fixedly connected to the second connection module.

7. The heliostat frame according to claim 6, characterized in that: The concave connection part and the convex connection part are fixedly connected by a screw, and the screw passes through the bottom of the groove of the groove and enters the protrusion.

8. The heliostat frame according to claim 1, characterized in that: The fourth connecting module includes a sub-beam connecting portion and an oblique beam connecting portion, both of which are cubic in shape. The oblique beam connecting portion is located on one side of the sub-beam connecting portion, the sub-supporting beam is fixedly connected to the sub-beam connecting portion by screws, and the oblique supporting beam is fixedly connected to the oblique beam connecting portion by screws.

9. A heliostat, characterized in that: The heliostat comprises a heliostat body and a heliostat frame according to any one of claims 1 to 8, and the heliostat body is mounted on the secondary support beam.

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