Main beam for installing heliostat bracket

Abstract

The utility model belongs to the technical field of heliostats, and particularly relates to a main beam used for installing a heliostat frame, the main beam comprises a main beam body, an upper flange and a lower flange, the main beam body is of a short cylinder structure, and the upper flange and the lower flange are arranged at the upper end and the lower end of the short cylinder structure respectively; a plurality of fixing positions for fixing a heliostat truss are arranged on the upper flange and the lower flange in a surrounding manner; one side of the main beam body is provided with a first supporting lug rotationally connected with a heliostat supporting seat, and the bottom of the lower flange is provided with a second supporting lug connected with a driving rod of a heliostat. The technical problems that in the prior art, a heliostat main beam is high in machining cost, poor in structural symmetry and high in driving power requirement are solved, the manufacturing cost is reduced, the structural symmetry is improved, and the effect of reducing the driving power requirement is achieved.

Description

Technical Field

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

[0002] In solar thermal power generation systems, heliostats are key devices used to focus sunlight onto receivers. Their design significantly impacts the performance and cost of the entire system. Currently, mainstream heliostat structures typically consist of a reflector, a drive mechanism, a mirror frame, and a support base connecting the columns to the frame. The frame's primary function is to support the mirrors and ensure they maintain excellent wind resistance and surface accuracy in various environmental conditions, thereby ensuring optimal sunlight focusing.

[0003] A typical heliostat frame structure is a truss structure consisting of a main beam, trusses, and purlins. The main beam, providing primary support and wind resistance, is the core component of the entire frame. Currently, the main beam is typically designed as a long tubular structure to support the trusses, which run parallel across the width of the heliostat. As a result, the main beam is relatively long, with a length-to-diameter ratio exceeding 50:1. The main beam is pivotally connected to the support base, with its central axis parallel to the main beam's rotational axis relative to the support base.

[0004] This design leads to the following problems:

[0005] 1. Difficulty in processing and high manufacturing costs: Due to the long length of the main beam, high-precision processing is usually required to meet design requirements, which complicates the process and significantly increases costs. The long tubular structure is prone to deformation during manufacturing, which requires very high processing precision and material selection, resulting in increased costs.

[0006] 2. Difficulty in tolerance control and low assembly precision: During the manufacturing process, the main beam is prone to significant deformation and deviation due to its long length, making it difficult to achieve strict tolerance control. This affects the subsequent assembly precision, which in turn affects the heliostat's focusing efficiency and system performance.

[0007] 3. Improper design of the rotation centerline increases the burden on the drive motor: The central axis of the main beam is parallel to the rotation centerline of the support base, causing the main beam to be subjected to a large bending moment during the rotation and positioning of the heliostat. Especially under the action of wind load and deadweight, the main beam is prone to uneven stress, resulting in bending deformation.

[0008] These issues pose a major challenge in the design and manufacture of heliostats for solar thermal power generation systems. Improving the main beam structure to enhance machining and assembly precision and efficiency, and optimizing the layout of the rotation axis to reduce the drive burden, are currently pressing issues to be addressed. Utility Model Content

[0009] In view of the shortcomings of the existing technology, the present application proposes a main beam for installing a heliostat frame.

[0010] In order to achieve the technical purpose of this utility model, this utility model will adopt the following technical solutions:

[0011] A main beam for mounting a heliostat frame includes a main beam body, an upper flange, and a lower flange. The main beam body is a short cylindrical structure, with the upper and lower flanges respectively disposed at the upper and lower ends of the short cylindrical structure. The upper and lower flanges are surrounded by a plurality of fixing positions for fixing a heliostat truss. A first lug is provided on one side of the main beam body for rotationally connecting to a heliostat support seat, and a second lug is provided at the bottom of the lower flange for connecting to a drive rod of the heliostat.

[0012] Furthermore, the cross section of the main beam body is an oblong, and the interior thereof is a hollow structure, and a connecting plate is provided in the hollow structure.

[0013] Furthermore, the long axis length of the oblong structure is equal to the length of the main beam body, the short axis length is equal to the width of the main beam body, the ratio of the height to the length of the main beam body is in the range of 0.5-3, and the ratio of the width to the length of the main beam body is in the range of 0.5-3.

[0014] Furthermore, there are two first supporting ears and two second supporting ears, the two first supporting ears are arranged at intervals on one side of the long side of the main beam body, and the two second supporting ears are arranged at intervals on the bottom surface of the lower flange.

[0015] Furthermore, a plurality of limiting grooves are distributed along the outer edges of the lower surface of the upper flange and the upper surface of the lower flange.

[0016] Furthermore, a heliostat truss mounting hole is provided in each of the limiting grooves.

[0017] Furthermore, there are two connecting plates, and the two connecting plates are parallel to each other.

[0018] Furthermore, the two connecting plates are symmetrically distributed along the longitudinal center line of the main beam body.

[0019] Furthermore, the longitudinal center line of the main beam body is perpendicular to its rotation center line.

[0020] The beneficial effects of the utility model are:

[0021] First, the short cylindrical main beam of the present invention extends the heliostat mount outward around the outer edges of the upper and lower flanges, expanding the mounting surface and enhancing the truss's stability and wind resistance, effectively preventing deformation or shifting in strong winds. Furthermore, the extended flange design provides more mounting locations and enhances system flexibility. Fixings on the upper and lower flanges simplify the truss installation process and improve construction efficiency. By connecting the first lug to the heliostat support base and the second lug to the drive rod, the heliostat angle can be precisely adjusted, thereby improving solar tracking accuracy and system reliability.

[0022] Second, in the preferred implementation, the main beam of this utility model utilizes an oblong hole-shaped cross-section, offering the advantage of lightweight construction. While maintaining structural strength and rigidity, this reduces material usage and overall beam weight, effectively lowering costs and installation difficulty. Furthermore, the connecting plates installed inside the main beam further enhance its structural strength, providing additional support and stability, and preventing deformation or distortion of the main beam during use.

[0023] Third, in a preferred embodiment, the present invention enhances the overall structural stability of the main beam through the symmetrical distribution of the first and second lugs and connecting plates. Two first lugs are spaced apart on one side of the main beam's long side, while two second lugs are spaced apart on the underside of the lower flange, positioned opposite the first lugs. This evenly distributes forces from different directions and enhances structural balance. Furthermore, the two connecting plates are symmetrically and parallelly arranged along the longitudinal centerline of the main beam, further enhancing the beam's rigidity and torsional resistance.

[0024] Fourth, in the preferred implementation, the present invention uses the design of limit slots to enable the heliostat truss to be quickly aligned during installation, simplifying the installation process and improving assembly efficiency. At the same time, it effectively prevents the truss from shifting or loosening during operation, enhancing the system's wind resistance and long-term operational stability.

[0025] Fifth, in the preferred implementation, the main beam of the utility model is shorter, and can maintain better balance under rotation and load conditions. In addition, its longitudinal center line is perpendicular to the rotation center line, so that the amplitude of bending deformation when subjected to force is reduced, and it can effectively resist the bending stress caused by external forces and improve the overall bending stiffness. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The three-dimensional structure of the main beam of embodiment 1 of the present utility model Figure 1 ;

[0027] Figure 2 The three-dimensional structure of the main beam of embodiment 1 of the present utility model Figure 2 ;

[0028] Figure 3 It is a side view of the main beam of Example 1 of the present utility model;

[0029] Figure 4 This is a schematic diagram of an application structure of the main beam of Example 2 of the present utility model.

[0030] Among them, 1-main beam body; 10-connecting plate; 2-upper flange; 3-lower flange; 30-limiting groove; 4-first lug; 5-second lug; 6-driving rod; 7-support seat; a-longitudinal center line of the main beam body; b-rotation center of the support seat. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Example 1

[0035] As the instruction manual Figure 1-2 This utility model describes a main beam for mounting a heliostat mount, comprising a main beam body 1, an upper flange 2, and a lower flange 3. The main beam body 1 is a short cylindrical structure with a continuous cladding surface on its sides. The upper flange 2 and the lower flange 3 are disposed at the upper and lower ends of the short cylindrical structure, respectively, for mounting a heliostat truss. The upper and lower flanges 2 and 3 are each provided with a plurality of fixing points for securing the heliostat truss. A first lug 4 is provided on one side of the main beam body 1 for rotational connection to the heliostat support seat, and a second lug 5 is provided at the bottom of the lower flange 3 for connection to a drive rod.

[0036] In an embodiment of the present application, the cross-section of the main beam body 1 is an oblong, consisting of two parallel long sides and two semicircular arcs, and its interior is a hollow structure. Two connecting plates 10 are symmetrically arranged along the longitudinal center line of the hollow structure. The two connecting plates 10 are parallel to each other, thereby enhancing the stability of the overall structure of the main beam.

[0037] The length of the long axis of the oblong structure is equal to the length of the main beam body 1, and the length of the short axis is equal to the width of the main beam body 1. The ratio of the height to the length of the main beam body 1 is in the range of 0.5-3, and the preferred ratio is in the range of 0.8 to 1. This means that the height of the main beam is basically similar to or slightly smaller than its length, maintaining a certain vertical rigidity, while meeting the design standards of a short cylinder, avoiding structural instability caused by the main beam body 1 being too high or too long. A larger ratio (close to 1) can enhance the vertical bending rigidity, which is suitable for applications with large wind loads or heavy loads; a slightly smaller ratio (close to 0.8) can reduce the amount of material used while maintaining rigidity, which is suitable for scenarios requiring compactness and lightness.

[0038] The width-to-length ratio of the main beam (1) ranges from 0.5 to 3, with a preferred range of 0.6 to 0.8. This ratio directly impacts lateral stability and the compactness of the overall structure. This range helps maintain the main beam's lateral compactness while ensuring the necessary strength and rigidity to support the heliostats. A smaller ratio (closer to 0.6) reduces space usage and is suitable for compact designs; a larger ratio (closer to 0.8) increases the main beam's lateral rigidity, making it more stable in the face of external forces.

[0039] There are two first and second lugs 4, 5. Two first lugs 4 are spaced apart on one long side of the main beam body 1. One end of the heliostat support is located between the two first lugs 4 and is pivotally connected to them via a pin. Two second lugs 5 are spaced apart on the bottom surface of the lower flange 3. One end of the drive rod is located between the two second lugs 5 and is pivotally connected to them via a pin.

[0040] A plurality of retaining grooves 30 for positioning and limiting the installation of the heliostat truss are symmetrically distributed along the outer edges of the lower surface of the upper flange 2 and the upper surface of the lower flange 3. Each retaining groove 30 has a heliostat truss mounting hole. These holes, through locating pins or bolts, tightly mate the heliostat truss with the main beam, providing a stable retaining effect.

[0041] In the embodiment of the present application, the retaining grooves 30 have a depth of 5-10 mm, a width of 20-30 mm, and a length of 50-150 mm, matching the mounting fixtures. The groove dimensions are designed based on the size of the mounting's locating pins or fixing bolts to ensure a tight fit. The design of the retaining grooves 30 simplifies the installation and adjustment process of the heliostat truss, improving assembly efficiency and accuracy. The symmetrical and even distribution of the retaining grooves 30 ensures comprehensive support and positioning, preventing the mounting from shifting or rotating during operation, significantly enhancing the system's wind resistance and operational stability.

[0042] Combined with the instructions Figure 3 , Figure 3 The mark a in the figure represents the longitudinal centerline of the main beam body 1. This longitudinal centerline runs through the entire height of the main beam and serves as the axis of symmetry for the main beam. The upper flange 2, lower flange 3, and main beam body 1 of the main beam are symmetrically located along this longitudinal centerline. The geometric center of the main beam is located at the midpoint between the upper flange 2 and lower flange 3 and is located along the longitudinal centerline. The mark b represents the rotation center of the main beam body 1. The rotation center of the main beam body 1 is offset by a predetermined distance from the geometric center of the main beam, and the rotation centerline is perpendicular to the longitudinal centerline of the main beam body 1.

[0043] In an embodiment of the present application, the height of the main beam body 1 is 400mm to 550mm, the width of the main beam body 1 is 300mm to 400mm, the length is 500mm to 650mm, and the wall thickness is 8mm to 12mm, ensuring that the main beam has sufficient strength and rigidity. The spacing between the connecting plates 12 is 180mm to 220mm, providing sufficient space for the rotation of the support seat. The outer diameter of the upper flange 2 and the lower flange 3 is 620mm to 760mm. The diameter of the flange is designed to be larger than the width of the main beam body 1 to increase the stability of the connection and the mounting surface. The thickness is 8mm to 12mm to ensure that it can effectively support the heliostat truss. The geometric center of the main beam is located at the midpoint between the upper flange 2 and the lower flange 3, and is positioned along the midpoint of the height of the main beam body 1.

[0044] In this embodiment, the heliostat frame extends outward around the outer edge of the flange, providing a wider mounting surface. This allows the heliostat truss to be securely mounted on the upper and lower flanges, enhancing the overall structure's wind resistance and stability. The main beam body 1 has an oblong cross-section and a hollow interior. This ensures strength and rigidity while reducing overall weight and optimizing material efficiency. These design features enhance the main beam's convenience, operational stability, and wind resistance during heliostat installation.

[0045] Example 2

[0046] As the instruction manual Figure 4Based on Example 1, this embodiment provides an application for mounting a main beam of a heliostat mount. The upper end of the support base 7 is located between the two first lugs 4 and is rotatably connected to the two first lugs 4 via a hinged connection. The housing of the drive rod is located between the two second lugs 5 and is rotatably connected to the two second lugs 5 via a hinged connection. This ensures that the push rod can rotate flexibly during extension and retraction, thereby adapting to the rotational movement of the support base. The push rod of the drive rod 6 is connected to the bottom of the support base 7 via a hinged connection. This connection allows the push rod to operate smoothly at different angles, preventing excessive lateral stress from affecting the stability of the system.

[0047] The core components of the drive rod 6 include an electric motor, a reduction gear set, a lead screw mechanism, and a push rod. The electric motor drives the lead screw to rotate, and the relative motion between the lead screw and the nut converts rotational motion into linear motion, pushing or retracting the push rod. The electric motor is controlled by a control signal (such as a voltage or pulse signal) to rotate forward or reverse, thereby achieving the push rod's telescopic movement. This movement is precisely electronically controlled, enabling precise angular adjustment of the support base 7. When the electronic control system issues a command to extend the push rod, the electric motor rotates forward, driving the lead screw through the gear reducer. The nut moves along the lead screw, pushing the push rod outward. At this point, the push rod pushes the main beam upward around the pin, increasing the pitch angle of the heliostat. To decrease the pitch angle, the electronic control system reverses, causing the electric motor to rotate in the opposite direction, and the nut moves in the opposite direction along the lead screw, thereby retracting the push rod. As the push rod retracts, it pulls the main beam downward around the pin, decreasing the pitch angle of the heliostat.

[0048] 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 main beam for mounting a heliostat frame, characterized in that: The invention comprises a main beam body (1), an upper flange (2) and a lower flange (3); the main beam body (1) is a short tube structure; the upper flange (2) and the lower flange (3) are respectively arranged at the upper and lower ends of the short tube structure; a plurality of fixing positions for fixing a heliostat truss are arranged around the upper flange (2) and the lower flange (3); a first lug (4) rotatably connected to a heliostat support seat is provided on one side of the main beam body (1); and a second lug (5) connected to a driving rod of the heliostat is provided at the bottom of the lower flange (3).

2. The main beam for installing a heliostat frame according to claim 1, characterized in that: The cross section of the main beam body (1) is an oblong shape, and the interior thereof is a hollow structure, wherein a connecting plate (10) is provided in the hollow structure.

3. The main beam for installing a heliostat frame according to claim 2, characterized in that: The long axis length of the oblong structure is equal to the length of the main beam body (1), and the short axis length is equal to the width of the main beam body (1). The ratio of the height to the length of the main beam body (1) is in the range of 0.5-3, and the ratio of the width to the length of the main beam body (1) is in the range of 0.5-3.

4. The main beam for installing a heliostat frame according to claim 1, wherein: There are two of each of the first supporting lugs (4) and the second supporting lugs (5). The two first supporting lugs (4) are spaced apart on one side of the long side of the main beam body (1), and the two second supporting lugs (5) are spaced apart on the bottom surface of the lower flange (3).

5. The main beam for installing a heliostat frame according to claim 1, characterized in that: A plurality of limiting grooves (30) are distributed along the outer edges of the lower surface of the upper flange (2) and the upper surface of the lower flange (3).

6. The main beam for installing a heliostat frame according to claim 5, characterized in that: A heliostat truss mounting hole is provided in each of the limiting grooves (30).

7. The main beam for installing a heliostat frame according to claim 2, characterized in that: There are two connecting plates (10), and the two connecting plates (10) are parallel to each other.

8. The main beam for installing a heliostat frame according to claim 2, characterized in that: The two connecting plates (10) are symmetrically distributed along the longitudinal center line of the main beam body (1).

9. The main beam for installing a heliostat frame according to claim 1, characterized in that: The longitudinal center line of the main beam body (1) is perpendicular to its rotation center line.

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