Heliostat supporting structure adopting hub structure for pitching driving

Abstract

The utility model discloses a heliostat supporting structure adopting a hub structure for pitching driving. According to the utility model, the orientation rotation motion of the heliostat is realized through the rotation of the supporting platform, and the pitching motion of the heliostat is realized through the pitching rotation of the driven hub driven by the driving gear driven by the motor. The utility model has the advantages that: for medium and large heliostats, the driven hub replaces a pitching rotating shaft, has a longer arm of force with the mirror surface, and can reduce the output power of the driving mechanism under the same load condition; and the hub structure is connected with the *-shaped truss, so that the length of an overhanging cantilever of the truss is shortened, the force transmission path is shortened, and the overall rigidity of the heliostat supporting structure is improved, thereby reducing the wind-induced vibration response and improving the normal working wind speed and the condensation precision of the heliostat.

Description

Technical Field

[0001] The utility model relates to the technical field of solar thermal power generation, and more specifically, to a heliostat support structure that adopts a hub structure for pitch driving. Background Art

[0002] Solar thermal power generation is one of the primary technologies currently used to utilize solar energy. In a solar thermal power plant, heliostats are concentrating devices that track the sun and reflect sunlight onto a heat sink atop a tower. This tracking requires both rotation and pitch motion. For medium- and large-sized heliostats, the load between the mounting base and the mirror is significant, leading to the following issues with existing drive mechanisms.

[0003] First, the lever arm between the drive mechanism and the pitch rotation axis is small, resulting in high energy consumption of the drive mechanism and therefore high drive costs; second, the existing medium and large heliostat support structures mostly adopt a "T"-shaped structure consisting of a column and a torque tube. The load is concentrated at the center of the torque tube, the torque tube is unevenly stressed, and high material strength requirements are required. Utility Model Content

[0004] The utility model overcomes the deficiencies of the prior art and provides a heliostat support structure that adopts a hub structure for pitch drive, so as to solve the problem of small moment arm between the drive mechanism and the pitch rotation axis in the prior support structure.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A heliostat support structure using a hub structure for pitch drive includes a support platform, a drive gear, a drive motor, a driven hub, and a connecting rod;

[0007] The driving motor is mounted on the supporting platform, and the driven wheel hub is mounted on the supporting platform in a pitching and rotatable manner;

[0008] The driving motor is connected to the driving gear;

[0009] The outer side of the driven hub is an arc, and the outer side of the driven hub is provided with teeth, which mesh with the driving gear;

[0010] The connecting rod is fixedly connected to both ends of the driven hub, and the connecting rods are arranged in parallel.

[0011] This new system achieves azimuth rotation of the heliostat by rotating the support platform. A motor then drives the driven gear, which in turn drives the driven hub in pitch, achieving pitch motion. When the gear drives the driven hub, the hub replaces the pitch axis, creating a longer lever arm with the mirror surface. This makes it particularly suitable for medium- to large-sized heliostats, requiring less driving force under the same load conditions.

[0012] A further technical solution is that the heliostat support structure includes parallel rods;

[0013] There are two parallel rods, and the two parallel rods are parallel;

[0014] The parallel rods are connected to two ends of different connecting rods, and the overall shape of the parallel rods after being connected to the connecting rods is rectangular.

[0015] The parallel rods and connecting rods with an overall rectangular shape can support each other, the whole is not easy to deform, and can form more contact support points with the truss, thereby improving the overall strength.

[0016] A further technical solution is that the heliostat support structure further includes a support seat, the support seat is arranged on the support platform, and the support seat is provided with a mounting hole at a position corresponding to the parallel rod;

[0017] The parallel rods are provided with insertion rods, and the insertion rods can be rotatably inserted into the mounting holes of the support base.

[0018] A further technical solution is that the heliostat support structure further includes a support rod;

[0019] The support rods are connected to the connecting rods and the driven hub respectively, and / or the support rods are connected to the parallel rods and the driven hub respectively.

[0020] Since the connecting rods and parallel rods need to be connected to the heliostat truss and provide support for the truss and the mirror surface, the connecting rods and parallel rods are prone to deformation in the direction of force. The use of support rods can provide support for the connecting rods and parallel rods and reduce deformation.

[0021] A further technical solution is that the support rod is connected to the connecting rod at both ends of the connecting rod;

[0022] The position where the support rod is connected to the parallel rod is the midpoint of the parallel rod.

[0023] A further technical solution is that the heliostat support structure includes a mirror surface, purlins, and a truss structure;

[0024] The truss structure includes a truss connector and a truss. The truss is installed on the truss connector. The truss connector is arranged at the center of the mirror surface. The truss is arranged on the mirror surface diagonal and the symmetry axis. The truss is in a M-shaped shape. Each truss is connected to at least one connecting rod or parallel rod.

[0025] The purlins are installed on the trusses in parallel at equal intervals, and the direction of the purlins is parallel to any side of the mirror surface;

[0026] The mirror is installed on the purlin.

[0027] Connecting the hub structure to the 'M' truss shortens the truss' cantilevered arm length and increases the truss' overall rigidity. Furthermore, the truss is mounted on truss connectors, allowing for detachable connections, enhancing the structure's assembly efficiency. These improvements ensure more uniform stress distribution throughout the truss structure and maximize material utilization, thus saving material.

[0028] Compared with existing technologies, the present invention has at least the following beneficial effects: It achieves azimuth rotation of the heliostat by rotating the support platform, and then achieves pitch motion of the heliostat by driving the driven hub via a motor-driven drive gear. For medium- to large-sized heliostats, the driven hub replaces the pitch axis, creating a longer lever arm with the mirror surface. This reduces the output power of the drive mechanism under the same load conditions. Furthermore, the hub structure is connected to the crossbar truss, shortening the truss cantilever length and the force transmission path, thereby increasing the overall stiffness of the heliostat support structure. This reduces wind-induced vibration response and improves the normal operating wind speed and focusing accuracy of the heliostat. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the driving gear, driving motor, driven hub and connecting rod;

[0030] Figure 2 This is a schematic diagram of the overall structure of the utility model;

[0031] Figure 3 Schematic diagram of the heliostat structure.

[0032] In the figure, 1-support platform, 2-drive gear, 3-drive motor, 4-driven hub, 5-connecting rod, 6-support rod, 7-parallel rod, 8-support seat, 9-purlin, 10-truss structure, 101-truss connector, 102-truss, 11-mirror. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] A heliostat support structure using a hub structure for pitch drive, see Figure 1-Figure 3 , including a support platform 1, a driving gear 2, a driving motor 3, a driven hub 4, a connecting rod 5, a supporting rod 6, a parallel rod 7, a supporting seat 8, a mirror 11, a truss structure 10, and a purlin 9;

[0035] The driving motor 3 is mounted on the supporting platform 1, and the driven hub 4 is mounted on the supporting platform 1 in a pitching and rotating manner;

[0036] The driving motor 3 is connected to the driving gear 2;

[0037] The outer side of the driven hub 4 is an arc, and the outer side of the driven hub 4 is provided with teeth, which mesh with the driving gear 2;

[0038] The connecting rod 5 is fixedly connected to both ends of the driven hub 4, and the connecting rod 5 is arranged in parallel.

[0039] There are two parallel rods 7, and the two parallel rods 7 are parallel;

[0040] The parallel rods 7 are connected to two ends of different connecting rods 5. After the parallel rods 7 are connected to the connecting rods 5, the overall shape is a rectangle.

[0041] The support base 8 is provided on the support platform 1, and a mounting hole is provided on the support base 8 corresponding to the position of the parallel rod 7;

[0042] The parallel rod 7 is provided with an insertion rod, and the insertion rod can be rotatably inserted into the mounting hole of the support seat 8.

[0043] The support rod 6 is connected to the connecting rod 5 and the driven hub 4 respectively, and / or the support rod 6 is connected to the parallel rod 7 and the driven hub 4 respectively. In this embodiment, the connecting rod 5 and the parallel rod 7 are both connected to the driven hub 4 via the support rod 6. Specifically, the support rod 6 is connected to the connecting rod 5 at both ends of the connecting rod 5;

[0044] The position where the support rod 6 is connected to the parallel rod 7 is the midpoint of the parallel rod 7. The other end of the support rod 6 connected to the parallel rod 7 is connected to other support rods 6. Since the other support rods 6 are connected to the driven hub 4 and transfer the load to the driven hub 4, in fact all the support rods 6 are connected to the driven hub 4.

[0045] The truss structure 10 includes a truss connector 101 and a truss 102. The truss 102 is mounted on the truss connector 101. The truss connector 101 is located at the center of the mirror surface 11. The trusses 102 are located on the diagonals and symmetry axes of the mirror surface 11. The trusses 102 are in the shape of a crossbar. Each truss 102 is connected to at least one connecting rod 5 or parallel rod 7.

[0046] The purlins 9 are installed on the trusses 102 in parallel at equal intervals. The purlins 9 are parallel to any side of the mirror surface 11. In this embodiment, the purlins 9 are arranged horizontally.

[0047] The mirror surface 11 is mounted on the purlin 9 and can be fixed to the connecting plate by bonding, plugging, etc. In this embodiment, bonding is adopted.

[0048] In this embodiment, the truss connector 101 is circular, and the truss 102 is installed on the circumference of the truss connector 101 .

[0049] During installation, the mirror 11 is installed on the purlin 9, the purlin 9 is installed on the truss 102 in parallel with equal intervals, the truss 102 is installed on the truss connector 101, and each truss 102 is connected to at least one connecting rod 5 or parallel rod 7.

[0050] During use, the support platform 1 rotates to realize the azimuth rotation of the heliostat; the motor drives the driving gear 2 to drive the driven hub 4 to pitch and rotate, and the driven hub 4 pitches and drives the connecting rod 5 and parallel rod 7, thereby driving the truss 102, purlin 9, and mirror surface 11 to pitch and rotate, realizing the pitch movement of the heliostat.

[0051] Although the present invention has been described herein with reference to illustrative embodiments thereof, it will be understood that those skilled in the art may devise numerous other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope disclosed herein, various variations and improvements may be made to the components and / or layout of the subject combination arrangement. In addition to variations and improvements to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A heliostat support structure using a hub structure for pitch drive, characterized in that: Including support platform, drive gear, drive motor, driven hub, and connecting rod; The driving motor is mounted on the supporting platform, and the driven wheel hub is mounted on the supporting platform in a pitching and rotatable manner; The driving motor is connected to the driving gear; The outer side of the driven hub is an arc, and the outer side of the driven hub is provided with teeth, which mesh with the driving gear; The connecting rod is fixedly connected to both ends of the driven hub, and the connecting rods are arranged in parallel.

2. The heliostat support structure using a hub structure for pitch drive according to claim 1, characterized in that: including, parallel rods; There are two parallel rods, and the two parallel rods are parallel; The parallel rods are connected to two ends of different connecting rods, and the overall shape of the parallel rods after being connected to the connecting rods is rectangular.

3. The heliostat support structure using a hub structure for pitch drive according to claim 2, characterized in that: It also includes a support base, which is arranged on the support platform and has a mounting hole at a position corresponding to the parallel rod; The parallel rods are provided with insertion rods, and the insertion rods can be rotatably inserted into the mounting holes of the support base.

4. The heliostat support structure using a hub structure for pitch drive according to claim 2, wherein: including, support rods; The support rods are connected to the connecting rods and the driven hub respectively, and / or the support rods are connected to the parallel rods and the driven hub respectively.

5. The heliostat support structure using a hub structure for pitch drive according to claim 4, characterized in that: The connection positions of the support rod and the connecting rod are at the two ends of the connecting rod; The position where the support rod is connected to the parallel rod is the midpoint of the parallel rod.

6. A heliostat support structure using a hub structure for pitch drive according to any one of claims 1 to 5, characterized in that: Including, mirror, purlin, truss structure; The truss structure includes a truss connector and a truss. The truss is installed on the truss connector. The truss connector is arranged at the center of the mirror surface. The truss is arranged on the mirror surface diagonal and the symmetry axis. The truss is in a M-shaped shape. Each truss is connected to at least one connecting rod or parallel rod. The purlins are installed on the trusses in parallel at equal intervals, and the direction of the purlins is parallel to any side of the mirror surface; The mirror is installed on the purlin.

Images