Radial heliostat bracket

Abstract

The utility model belongs to the technical field of heliostats, and particularly relates to a radial heliostat frame which comprises a truss assembly and a purline assembly fixed to the top of the truss assembly, the truss assembly comprises a plurality of truss supporting arms, the truss supporting arms take a heliostat main beam as the center and extend outwards from the heliostat main beam in different directions, and the purline assembly is fixed to the top of the truss assembly. The purline assembly comprises a plurality of purlines, and the purlines are fixed between the adjacent truss supporting arms respectively. The external load is effectively dispersed through the truss radial structure, local stress concentration is reduced, the rigidity and stability of the spectacle frame are improved, the longitudinal and transverse purlins are reasonably distributed in a designated area, mechanical cooperation is optimized, material waste is reduced, and the structural weight and cost are reduced; the technical problems of material waste, high construction complexity and insufficient wind resistance in the prior art are solved.

Description

Technical Field

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

[0002] In existing solar heliostat systems, trusses and purlins form the core support structure of the mirror frame, primarily responsible for supporting the large mirror surface and ensuring the system's long-term stability. The trusses serve as the primary framework, evenly distributing the load across all connection points, thereby enhancing the stability of the entire structure. Purlins are mounted on top of the trusses, forming a grid-like support structure that supports the heliostat's reflector panels. Typically, the trusses are arranged horizontally on the main beams at regular intervals, forming an overall rectangular grid. Purlins are arranged longitudinally along the trusses, providing firm support for the reflector panels.

[0003] Although this traditional heliostat frame design has certain support capabilities, it still has some defects:

[0004] 1. The arrangement of trusses and purlins is relatively fixed, and the design is not optimized according to the stress conditions in different areas, resulting in excessive use of materials in some areas and underutilization of other areas, increasing material waste.

[0005] 2. Due to the dense arrangement of the trusses, the entire structure is more complex and the construction and maintenance costs are high. Especially when installing heliostat arrays on a large scale, this complexity increases the installation difficulty and cost.

[0006] 3. The purlins are slender and thin, which may bend or vibrate under strong winds or external forces, affecting the flatness of the reflector, thereby reducing the optical accuracy and energy reflection effect of the heliostat system.

[0007] Therefore, the existing heliostat frame design has problems such as material waste, high construction complexity and insufficient wind resistance, and urgently needs to be optimized. Utility Model Content

[0008] In view of the shortcomings of the existing technology, the present application proposes a radial heliostat frame.

[0009] In order to achieve the technical purpose of this utility model, this utility model will adopt the following technical solutions:

[0010] A radial heliostat frame includes a truss assembly and a purlin assembly fixed to the top of the truss assembly. The truss assembly includes multiple truss support arms, each truss support arm is centered on the heliostat main beam and extends outward from the heliostat main beam in different directions to form a radial structure. The purlin assembly includes several purlins, each purlin is fixed between adjacent truss support arms.

[0011] Furthermore, the truss support arm includes a first truss, one end of each first truss is fixed to a fixed position of the heliostat main beam, and two adjacent first trusses extend outward from the fixed position in a divergent manner, with a first angle between the two.

[0012] Furthermore, the truss support arm also includes a second truss, each of the second trusses is connected to the distal end of the corresponding first truss, and extends toward the middle area between the two first trusses to converge and connect together, with a second angle between the two.

[0013] Furthermore, the truss support arm further includes a third truss, and two sides of the third truss are respectively connected to the middle areas of the adjacent first trusses and are connected to the convergent nodes of the two second trusses.

[0014] Furthermore, a third angle is formed between adjacent truss support arms, the second angle is greater than the first angle, and the third angle is smaller than the second angle.

[0015] Furthermore, the purlin assembly is composed of a plurality of purlin groups, each purlin group is composed of n purlins, and each purlin group is fixed on the top of an adjacent truss support arm.

[0016] Furthermore, the purlins in each purlin group are parallel to each other and arranged at equal intervals.

[0017] Furthermore, vertical reinforcing rods are provided between adjacent purlins.

[0018] Furthermore, the distribution of the purlin group on the horizontal plane includes: (1) partial transverse distribution and partial longitudinal distribution, (2) full longitudinal distribution, or (3) full transverse distribution.

[0019] The beneficial effects of the utility model are:

[0020] First, the present invention achieves high structural stability and uniform stress distribution through the ingenious combination of a truss assembly and a purlin assembly. The truss assembly includes multiple truss support arms that extend radially outward from the heliostat main beam, giving the entire mirror frame structure excellent torsional stiffness and overall rigidity in all directions. The purlin assembly is fixed between adjacent truss support arms, which not only further strengthens the stability of the mirror frame but also effectively improves its deformation resistance.

[0021] Second, in a preferred implementation, the truss support arm of the present invention includes first, second, and third trusses. By adding the third truss in the middle region of the first truss, multiple support points are formed, effectively enhancing the strength of the overall truss structure, improving its ability to withstand external loads and wind, and ensuring the long-term stable operation of the heliostat. The connection between the third truss and the top of the second angle further disperses the mechanical load, reduces stress concentration areas, extends the service life of the truss assembly, and avoids local excessive deformation.

[0022] Third, in a preferred implementation, the present invention forms a multi-level support structure by setting the first, second, and third angles, which can more evenly distribute the force on the heliostat. The design of the second angle being greater than the first angle enhances the bearing capacity of the truss assembly, forms a good mechanical fit between the support arms, reduces stress concentration, and effectively extends the life of the structure. The existence of the third angle makes the spatial distribution between adjacent support arms more reasonable.

[0023] Fourth, in a preferred embodiment, the purlin assembly of the present invention is composed of multiple purlin groups, each group of purlins is fixed at the top of adjacent truss support arms and is distributed horizontally and vertically on the horizontal plane. Since each purlin group is arranged diagonally with the heliostat main beam as the center, the purlin groups in the same direction remain parallel, and the purlins are arranged at equal intervals. This layout makes the force on the entire frame structure more uniform, effectively avoiding local stress concentration. In addition, the purlins arranged at equal intervals ensure a reasonable load distribution under the action of external forces, further enhancing the deformation resistance and torsional rigidity of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional structural diagram of a radial heliostat frame according to an embodiment of the present utility model;

[0025] Figure 2 is a top view of a radial heliostat frame according to an embodiment of the present utility model;

[0026] Figure 3 This is a three-dimensional structural diagram of a truss support arm according to an embodiment of the present utility model;

[0027] Figure 4 This is a three-dimensional structural diagram of a truss assembly of a variation of an embodiment of the present utility model;

[0028] Figure 5 It is a structural diagram of a fully transversely distributed purlin group according to an embodiment of the present utility model.

[0029] Among them, 1-truss assembly; 10-first truss; 11-second truss; 12-third truss; 2-purlin assembly. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present application, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] The terms "up", "down", "left", "right", "front", and "back" in this application are based on the positional relationships shown in the accompanying drawings. The corresponding positional relationships may vary depending on the drawings, and should not be construed as limiting the scope of protection.

[0032] In this application, the terms "installed," "connected," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, integral connection, mechanical connection, electrical connection, or mutual communication. They can also be directly connected or indirectly connected through an intermediate medium. They can also refer to internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] Example 1

[0034] As the instruction manual Figure 1-3 This utility model describes a radial heliostat frame, comprising a truss assembly 1 and a purlin assembly 2 fixed to the top of the truss assembly 1. The truss assembly 1 is composed of several rigid rods connected together, which form multiple truss support arms. Each truss support arm is centered on the heliostat main beam and extends outward from the heliostat main beam in different directions, forming a radial structure. The purlin assembly 2 includes several purlins, each fixed between adjacent truss support arms, and is used to support the heliostat mirror structure.

[0035] In the embodiment of the present application, the truss support arm includes a first truss 10, a second truss 11, and a third truss 12. A plurality of fixed positions for fixing the truss assembly 1 are arranged around the periphery of the heliostat main beam, with two first trusses 10 and two second trusses 11. One end of each first truss 10 is fixed to a fixed position on the heliostat main beam, and two adjacent first trusses 10 extend outward from the fixed position in a divergent manner, with a first angle α between them, as shown in FIG. Figure 2 The first angle α shown in FIG. 1 represents the angle between the two first trusses 10 in space, with the opening direction being away from the outer area of ​​the heliostat main beam. Each second truss 11 is connected to the distal end of the corresponding first truss 10 and extends toward the middle area between the two first trusses 10 to converge and connect together, with a second angle β between the two trusses, and the second angle β is greater than the first angle α. Specifically, Figure 2The third truss 12 is connected to the middle area of ​​the adjacent first trusses 10 on both sides and is connected to the convergence nodes of the two second trusses 11 to enhance the rigidity and stability of the overall structure. A third angle γ is formed between the adjacent truss support arms, as shown in FIG. Figure 2 shown.

[0036] The magnitude of the first angle α depends on the radial angle of the first truss 10 and is typically small to ensure that the truss support arms can adequately cover and support the weight of the heliostats. The setting of the first angle ensures the radial extension of the truss, allowing force to be evenly transferred from the center to the periphery, forming a basic support framework. This setting plays a significant role in the initial rigidity and uniform force distribution of the overall truss structure. The setting of the second angle β is primarily intended to enhance the support strength of the truss structure at the periphery. A design in which the second angle β is greater than the first angle α expands the support range, thereby improving the stability and torsion resistance of the structure. This setting strengthens and resists deformation of the truss when responding to external forces such as wind loads and heavy loads. The third angle γ is formed between adjacent truss support arms and reflects the distribution of the trusses across the entire plane. The size of this angle is determined by the arrangement of the truss support arms and is typically smaller than the second angle β, allowing the trusses to form a tighter support network in different directions. This design gradually increases from the first angle α to the second angle β, ensuring that force transmission from the main beam to the periphery is gradually diffused. This design helps avoid stress concentration and ensures the overall strength of the truss structure. The larger second angle β helps resist horizontal external forces, while the tight arrangement of the third angle γ effectively resists the impact of lateral forces such as wind loads on the heliostats, improving overall wind resistance. By designing with different angles, the structure can rationally distribute material and force in all directions, avoiding excessive material use while ensuring sufficient strength.

[0037] The truss assembly 1 of this embodiment is suitable for large-scale, high-load heliostat systems, especially in environments with high wind speeds or heavy loads. The structure is highly rigid and stable, capable of handling harsh external conditions such as strong winds and heavy loads. The combination of the first, second, and third trusses evenly distributes force from the heliostat main beam outward, avoiding stress concentration. The design of the second and third trusses enhances torsional resistance, demonstrating excellent stability, particularly when responding to external lateral forces such as wind loads. The multi-layer truss support provides exceptional rigidity, suitable for the strong support requirements of heavy heliostat arrays.

[0038] Example 2

[0039] This embodiment is a variant structure of the truss support arm. The truss support arm only includes the first truss 10. The arrangement of the first truss 10 in this embodiment is the same as that in Example 1.

[0040] The distribution of the first trusses 10 ensures that the truss structure extends evenly outward from the center. The design of the first truss 10 provides primary support for the entire heliostat mirror surface. Without the second and third trusses, the first truss 10 would solely bear all structural loads, making the setting of the first angle α crucial. A small first angle α ensures a relatively compact distribution of the trusses, providing sufficient support rigidity. Through the rational distribution of the first trusses, force is evenly distributed from the center of the heliostat main beam outward, avoiding localized stress concentration and thus ensuring structural stability.

[0041] This truss support arm structure is suitable for small or lightly loaded heliostat systems, ideal for environments with low wind speeds and light loads. Using only the first truss reduces component and material costs, reduces structural complexity, facilitates installation and maintenance, and shortens the construction cycle. It effectively provides support even under low loads and external forces.

[0042] Example 3

[0043] This embodiment is another variant structure of the truss support arm, which includes a first truss 10 and a second truss 11. The arrangement of the first truss 10 and the second truss 11 in this embodiment is the same as the arrangement of the first truss 10 and the second truss 11 in Example 1. By setting the second angle β, the truss structure is expanded on the basis of the first truss 10, and the support range is further increased. The design in which the second angle β is greater than the first angle α helps to disperse the external force and improve the ability to resist wind load and torsional distortion. Compared with Example 1, despite the lack of the additional reinforcement of the third truss 12, the structure can still maintain stability within a larger support area.

[0044] This structure is suitable for medium-sized heliostat systems and is ideal for environments with moderate wind speeds and loads. The second truss further disperses the forces of the first truss, enhancing peripheral support. The second angle β improves wind load and torsional resistance. Compared to a three-truss structure, eliminating the third truss saves material and simplifies construction, making it suitable for applications with high material and cost requirements.

[0045] Example 4

[0046] The structure of the truss assembly 1 of Example 1 is a structural form of the radial heliostat frame of the present application. The truss assembly 1 can also be a concentric circular radial structure or other structural forms.

[0047] As the instruction manual Figure 4The truss assembly 1 of the concentric circular radial structure includes a truss assembly 1 and an annular truss group 13. The arrangement of the first truss 10 in this embodiment is consistent with the arrangement of the first truss 10 in Example 1. The annular truss group 13 includes several annular trusses with increasing diameters. These annular trusses are arranged on the top of the truss assembly 1 and extend outward with the heliostat main beam as the center to form a plurality of concentric circular hierarchical structures. The purlin assembly 2 is installed on the top of the annular truss group 13. This concentric circular truss design, especially the multi-level structure of the annular truss group, effectively disperses the stress points, making the entire truss assembly more uniform and stable when bearing external loads. This design can reduce the risk of single-point stress concentration and avoid failure or deformation caused by excessive stress on the local structure.

[0048] Example 5

[0049] Based on the above embodiment, the purlin assembly 2 includes a plurality of purlin groups, wherein each purlin group is composed of n purlins, and each purlin group is fixed to the top of the adjacent truss support arm to form a stable frame structure. The distribution of the purlin group on the horizontal plane includes: (1) partial horizontal distribution, partial vertical distribution, (2) full vertical distribution, or (3) full horizontal distribution. Figure 2 The distribution of the purlin group shown in the horizontal plane is partly horizontal and partly vertical. Figure 5 The distribution of the purlin groups in the horizontal plane shown is fully transverse.

[0050] Specifically, transversely distributed purlin groups primarily enhance the structure's transverse torsional rigidity, playing a crucial supporting role in combating wind and lateral loads. Longitudinally distributed purlin groups effectively increase the longitudinal rigidity of the overall frame, ensuring the structure's vertical stability and bending resistance. Distributing purlins in different directions helps to more evenly distribute loads, reduce localized stress concentrations, and enhance the overall reliability and service life of the structure. Purlin groups are designed with both full longitudinal and full transverse distribution. Because the purlins are oriented in the same direction, a full longitudinal or full transverse distribution facilitates construction and installation, reducing complex joints and connections.

[0051] In terms of the arrangement of purlins, the purlin groups in the same distribution direction are symmetrically distributed. Figure 2 Taking the illustrated configuration as an example, four truss assemblies 1 are arranged radially, centered on the heliostat main beam, extending outward at ±45° and ±135° angles. Transverse and longitudinal purlin groups are symmetrically distributed across the top of the truss assemblies 1, forming a balanced support system. Each purlin group consists of three to six parallel purlins, with consistent spacing between them. This ensures uniform stress distribution across the frame structure under external forces, further enhancing overall stability.

[0052] In a preferred implementation, the purlin assembly 2 may further include vertical reinforcing rods between adjacent purlins to reduce the flexural deformation of the purlins.

[0053] The present invention achieves high stability and uniform stress through the combination of a truss assembly and a purlin assembly. The truss assembly is composed of multiple support arms that extend radially outward from the main beam of the heliostat, giving the structure good torsional stiffness and overall rigidity. The purlin assembly is fixed between adjacent truss support arms, further enhancing the stability and deformation resistance of the mirror frame. In a preferred implementation, the truss support arms include first, second, and third trusses. By adding a third truss in the middle of the first truss to form multiple support points, the structural strength and wind resistance are significantly improved. The connection between the third truss and the top of the second angle effectively disperses the mechanical load, reduces stress concentration, and extends the service life. In addition, the transverse and longitudinal distribution and equal spacing of the purlin assembly ensure that the load of the frame structure is evenly distributed under the action of external forces, further improving the overall deformation resistance and torsion resistance.

[0054] The above is only an embodiment of the present invention, and common knowledge such as the specific structure and characteristics of the scheme are not described in detail here. For those skilled in the art, it is obvious that the present application is not limited to the details of the above-mentioned exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the attached claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present application. Any figure mark in the claims should not be regarded as limiting the claim involved.

Claims

1. A radial heliostat frame, characterized in that: The invention comprises a truss assembly (1) and a purlin assembly (2) fixed on the top of the truss assembly (1). The truss assembly (1) comprises a plurality of truss support arms, each truss support arm is centered on a heliostat main beam and extends outward from the heliostat main beam in different directions to form a radial structure. The purlin assembly (2) comprises a plurality of purlins, each purlin being fixed between adjacent truss support arms.

2. The radial heliostat frame according to claim 1, wherein: The truss support arm comprises a first truss (10), one end of each first truss (10) is respectively fixed to a fixed position of the heliostat main beam, and two adjacent first trusses (10) extend outward from the fixed position in a divergent manner, with a first angle between the two.

3. The radial heliostat frame according to claim 2, wherein: The truss support arm also includes a second truss (11), each of the second trusses (11) is connected to the distal end of the corresponding first truss (10), and extends toward the middle area between the two first trusses (10), converges and is connected together, with a second angle between the two.

4. The radial heliostat frame according to claim 3, wherein: The truss support arm also includes a third truss (12), both sides of which are respectively connected to the middle areas of the adjacent first trusses (10) and connected to the convergence nodes of the two second trusses (11).

5. The radial heliostat frame according to claim 4, wherein: A third angle is formed between adjacent truss support arms, the second angle is greater than the first angle, and the third angle is smaller than the second angle.

6. The radial heliostat frame according to claim 1, wherein: The purlin assembly (2) comprises a plurality of purlin groups, each purlin group is composed of n purlins, and each purlin group is fixed on the top of an adjacent truss support arm.

7. The radial heliostat frame according to claim 6, wherein: The purlins in each purlin group are parallel to each other and arranged at equal intervals.

8. The radial heliostat frame according to claim 6, wherein: Vertical reinforcement bars are provided between adjacent purlins.

9. The radial heliostat frame according to claim 6, wherein: The distribution forms of the purlin group on the horizontal plane include: (1) partial transverse distribution and partial longitudinal distribution, (2) full longitudinal distribution, or (3) full transverse distribution.

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