A medium to large heliostat main beam

Abstract

The present invention discloses a main beam for medium-to-large heliostats, relating to the technical field of heliostat main beams. The main beam comprises a support mechanism, the support mechanism including a mounting seat, both ends of the mounting seat being fixedly connected to a hollow beam, two trusses being provided on the outside of the two hollow beams, the outer surface of each truss being fixedly connected to a connecting frame, and an adjustment mechanism being provided inside the two hollow beams. In this main beam for medium-to-large heliostats, the elevation angle of the trusses on the hollow beams can be fine-tuned using a worm, so that the elevation angles of the multiple trusses are more consistent. In addition, the distance between the trusses can be fine-tuned using a hollow screw and a rotating screw, thereby increasing the accuracy of subsequent fixing of heliostat lenses on the trusses. This allows the hollow beam to fine-tune the truss position and elevation angle according to the on-site installation requirements of the heliostat lenses, thereby reducing and eliminating minor errors during assembly of the trusses and the hollow beams, and improving the assembly accuracy between the hollow beams, the trusses, and the heliostat lenses.

Description

Technical Field

[0001] The present invention relates to the technical field of heliostat main beams, in particular to a medium-to-large heliostat main beam. Background Art

[0002] Heliostats are concentrating devices in tower-type solar thermal systems. Their reflective surfaces track the sun, reflecting and focusing sunlight onto a fixed target. Currently, heliostats are typically made of silver-coated glass, which offers advantages such as high reflectivity and long lifespan. To ensure optimal sun tracking, heliostats require columns and a main beam to support multiple heliostats. Furthermore, angle and direction adjustment mechanisms, combined with the main beam, are required to simultaneously adjust the positions of multiple heliostats according to changes in the sun's position, ensuring smooth tracking.

[0003] To better support the heliostats during use, the existing heliostat main beam needs to be coordinated with a truss to stabilize the positions of multiple heliostat lenses. The connection between the heliostat main beam and the truss is primarily secured by welding or bolting, which prevents fine-tuning based on on-site installation requirements. Due to the large size of the main beams for medium- and large-sized heliostats, slight errors are easily introduced during the assembly of the multiple trusses on the main beam. This can also lead to errors when the heliostat lenses are subsequently fixed to the trusses, affecting the smoothness of the fit between the multiple heliostat lenses. Since the site radius of a medium- and large-sized heliostat is typically 450 meters, and the maximum straight-line distance from the heliostat to the heat sink is nearly 500 meters, slight connection errors between the main beam and the truss can seriously affect the light reflection accuracy of the heliostat lenses, thereby reducing the installation accuracy of the main beam on the heliostat lenses.

[0004] Combining the above problems, we find that it is difficult to avoid the above problems at the same time when using the existing medium and large heliostat main beams. Even if they can be solved, they need to be solved with the help of external tools, which makes it impossible to achieve the desired effect. Therefore, we propose a medium and large heliostat main beam. Summary of the Invention

[0005] The object of the present invention is to provide a main beam for a medium or large heliostat to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a main beam for a medium-to-large heliostat, comprising a support mechanism, the support mechanism comprising a mounting seat, both ends of the mounting seat being fixedly connected to a hollow beam, two trusses being provided on the outside of the two hollow beams, the outer surface of each truss being fixedly connected to a connecting frame, and an adjustment mechanism being provided on the inside of the two hollow beams;

[0007] The adjustment mechanism includes a position fine-tuning unit, which is arranged inside the hollow beam and fine-tunes the position of the truss on the hollow beam and the elevation angle between the truss and the hollow beam;

[0008] The adjustment mechanism further includes an adjustment limit unit, which is arranged inside the position fine-tuning unit and is used to prevent the truss from loosening after the elevation angle is adjusted;

[0009] A positioning mechanism is provided inside the position fine-tuning unit. The positioning mechanism is used in conjunction with the adjusting mechanism. The positioning mechanism is used to position the truss after sliding adjustment on the hollow beam.

[0010] Preferably, the position fine-tuning unit includes a plurality of fixing sleeves, the inner wall of each fixing sleeve is in contact with the outer surface of the hollow beam, the surface of each fixing sleeve is slidably connected to a connecting ring, the outer surface of each connecting ring is fixedly connected to the connecting frame, the outer surface of each connecting ring is provided with a worm gear groove, the outer surface of each fixing sleeve is fixedly connected to the fixing frame, the interior of each fixing frame is rotatably connected to a worm, each worm is meshed with the worm gear groove, the outer surface of each worm is fixedly connected to a first large gear, the interior of each fixing frame is rotatably connected to a rotating rod, the outer surface of each rotating rod is fixedly connected to a first small gear, and the outer surface of each first small gear is engaged with the outer surface of the first large gear. The surfaces are meshed with each other, the outer surface of each rotating rod is fixedly connected to the second large gear, the interior of each fixed frame is rotatably connected to a connecting rod, the outer surface of each connecting rod is fixedly connected to the second small gear, the outer surface of each second small gear is meshed with the outer surface of the second large gear, the inner wall of each fixed sleeve is fixedly connected to a sliding frame, each sliding frame is slidably connected to the interior of the hollow beam, the interior of the two hollow beams is provided with a hollow screw, the outer surfaces of the two hollow screws are respectively threadedly connected to the inner walls of the sliding frames on the outside of the two hollow beams, the interior of the two hollow screws is slidably connected with a rotating screw, and the outer surfaces of the two rotating screws are respectively threadedly connected to the inner walls of the sliding frames on the inside of the two hollow beams.

[0011] Preferably, a group of limiting rings are rotatably connected to the interior of each fixing sleeve, the number of the limiting rings in each group is two, and the opposite sides of each group of limiting rings are fixedly connected to the outer surface of the connecting ring.

[0012] Preferably, the outer surfaces of the two hollow screws and the outer surfaces of the two rotating screws are slidably connected to two stabilizing frames, and the outer surface of each of the stabilizing frames is fixedly connected to the inner wall of the hollow beam.

[0013] The top of each set of return springs is fixedly connected to a lower pressure frame, and the two side surfaces of each lower pressure frame are inclined surfaces, and the inclined surfaces of each lower pressure frame are in contact with the inclined surface of the clamping sleeve. The outer surface of each lower pressure frame is provided with a rotating bearing, and each rotating shaft is The top of each connecting rod is provided with a clamping groove, and each handle frame is clamped in the inside of the clamping groove. The upper surface of each handle frame is fixedly connected to the pushing frame, and the bottom surface of each pushing frame is an arc surface. The interior of each connecting ring is provided with a limiting groove and an auxiliary groove, and the interior of each limit groove is slidably connected with two arc plates, and one side of each arc plate is an inclined surface. The inner wall of each arc plate is fixedly connected to a fixing block, and the interior of each fixing block is threadedly connected with an adjusting screw, and each adjusting screw is rotatably connected to the interior of the fixing sleeve, and each adjusting screw is arranged in the interior of the auxiliary groove.

[0014] Preferably, a first telescopic rod is provided inside each compression spring, the telescopic end of each first telescopic rod is fixedly connected to one side of the clamping sleeve, and the other end of each first telescopic rod is fixedly connected to the inner wall of the support seat.

[0015] Preferably, a second telescopic rod is provided inside each of the return springs, the telescopic end of each of the second telescopic rods is fixedly connected to the bottom surface of the lower pressure frame, and the bottom end of each of the second telescopic rods is fixedly connected to the inner bottom wall of the support seat.

[0016] Preferably, the outer surface of each of the arc-shaped plates is fixedly connected to two positioning rods, and each of the positioning rods is slidably connected to the inside of the fixing sleeve.

[0017] Preferably, the positioning mechanism includes two toothed discs, the outer surfaces of the two toothed discs are fixedly connected to the inner wall of the hollow beam, the outer surfaces of the two hollow screws are fixedly connected to the fixing discs, one side of the two fixing discs is fixedly connected to the auxiliary plate, the interior of the two auxiliary plates are slidably connected to the guide rods, the outer surfaces of the two hollow screws are provided with insertion holes, the outer surfaces of the two guide rods are sleeved with connecting springs, one end of the two connecting springs is fixedly connected to the upper surface of the auxiliary plate, the other end of the two connecting springs is fixedly connected to the clamping blocks, the top ends of the two guide rods are respectively fixedly connected to the bottom surfaces of the two clamping blocks, the upper surfaces of the two clamping blocks are respectively meshed with the inner walls of the two toothed discs, and one side of the two clamping blocks is fixedly connected There is a handle, and the ends of the two hollow beams away from each other are fixedly connected to a gear sleeve, the outer surfaces of the two gear sleeves are fixedly connected to auxiliary bearings, the outer surfaces of the two auxiliary bearings are fixedly connected to a rotating cylinder, the interiors of the two rotating cylinders are slidably connected to sliding bars, the two sliding bars are respectively slidably connected to the interiors of the two rotating screws, the tops of the two sliding bars are fixedly connected to handles, and the outer surfaces of the two sliding bars are sleeved with limit springs, one end of the two limit springs are respectively fixedly connected to the bottom surfaces of the two handles, and the other ends of the two limit springs are respectively fixedly connected to the outer surfaces of the two rotating cylinders, and the outer surfaces of the two sliding bars are fixedly connected to tooth groove seats, and the upper surfaces of the two tooth groove seats are respectively meshed with the inner walls of the two gear sleeves.

[0018] Preferably, two sliding grooves are provided on one side surface of the two fixed plates, and two sliding blocks are fixedly connected to the bottom surfaces of the two clamping blocks, and each of the sliding blocks is slidably connected to the inside of the sliding groove.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention provides a position fine-tuning unit, which can fine-tune the elevation angle of the truss on the hollow beam by rotating the worm, making the elevation angles of multiple trusses more consistent. Furthermore, the hollow screw and the rotating screw can be used to fine-tune the distance between the trusses, thereby increasing the accuracy of subsequent fixing of the heliostat lenses on the trusses. This allows the hollow beam to fine-tune the truss position and elevation angle according to the on-site installation requirements of the heliostat lenses, reducing and eliminating minor errors during assembly of the truss and the hollow beam, and improving the installation and matching accuracy between the hollow beam, truss, and heliostat lenses.

[0021] The present invention provides an adjustment limit unit, which can facilitate the staff to smoothly adjust the truss elevation angle, and can automatically lock or loosen the limit of the connecting rod, thereby preventing the truss from loosening after the elevation angle is adjusted. At the same time, the support and fixing effect of the truss can be guaranteed by the movement of the two curved plates, thereby ensuring the stability and bearing capacity of the truss after the elevation angle is adjusted.

[0022] The present invention provides a positioning mechanism, which can locate the positions of the hollow screw and the rotating screw after rotation without affecting the smooth rotation of the hollow screw and the rotating screw, and further can locate the position after the distance between the trusses is adjusted, so that the trusses are not prone to loosening after fine-tuning the distance on the hollow beam as needed, thereby ensuring the stability of the truss after the position is adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic structural diagram of the fixing sleeve and the hollow beam of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the connecting frame of the present invention;

[0026] Figure 4 This is a schematic structural diagram of the connecting ring of the present invention from the right side;

[0027] Figure 5 It is a schematic structural diagram of a cross-section of the fixing frame of the present invention;

[0028] Figure 6 This is a schematic structural diagram of a cross-section of a hollow beam of the present invention;

[0029] Figure 7 This is a schematic structural diagram of the curved plate of the present invention from the right side;

[0030] Figure 8 It is a structural schematic diagram of the push frame of the present invention;

[0031] Figure 9 This is a schematic structural diagram of the connecting rod and the handle frame of the present invention;

[0032] Figure 10 It is a structural schematic diagram of the support base of the present invention;

[0033] Figure 11 It is a schematic structural diagram of a cross-section of a toothed disc of the present invention;

[0034] Figure 12 It is a structural schematic diagram of the guide rod of the present invention;

[0035] Figure 13 This is a schematic structural diagram of a cross-section of the rotating drum of the present invention;

[0036] Figure 14 It is a schematic structural diagram of a cross-section of the lower pressing frame of the present invention.

[0037] In the figure: 1. Support mechanism; 11. Mounting seat; 12. Hollow beam; 13. Truss; 14. Connecting frame; 2. Adjusting mechanism; 21. Position fine-tuning unit; 2101. Fixing sleeve; 2102. Connecting ring; 2103. Worm gear groove; 2104. Fixing frame; 2105. Worm; 2106. First large gear; 2107. Rotating rod; 2108. First small gear; 2109. Second large gear; 2110. Connecting rod; 2111. Second small gear; 2112. Sliding frame; 2113. Hollow screw; 2114. Rotating screw; 2115. Limiting ring; 2116. Stable frame; 22. Adjusting limiting unit; 2201. Support seat; 2202. Positioning gear; 2203. Compression spring; 2204. Snap sleeve; 2205. Return spring; 2206. Press down Frame; 2207, rotating bearing; 2208, lower pressure plate; 2209, limit seat; 2210, handle frame; 2211, clamping groove; 2212, push frame; 2213, limit groove; 2214, auxiliary groove; 2215, arc plate; 2216, fixed block; 2217, adjusting screw; 2218, first telescopic rod; 2219, second telescopic rod; 2220, positioning rod; 3, Positioning mechanism; 301, toothed disc; 302, fixed disc; 303, auxiliary plate; 304, guide rod; 305, socket; 306, connecting spring; 307, clamping block; 308, handle; 309, toothed sleeve; 310, auxiliary bearing; 311, rotating cylinder; 312, sliding bar; 313, grip; 314, limit spring; 315, toothed seat; 316, sliding groove; 317, slider. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] Example 1: Please refer to Figures 1-6 The present invention provides a technical solution: a main beam of a medium-to-large heliostat, comprising a support mechanism 1, the support mechanism 1 comprising a mounting seat 11, both ends of the mounting seat 11 being fixedly connected to a hollow beam 12, two trusses 13 being provided on the outside of the two hollow beams 12, the outer surface of each truss 13 being fixedly connected to a connecting frame 14, and an adjustment mechanism 2 being provided inside the two hollow beams 12;

[0040] The adjustment mechanism 2 includes a position fine-tuning unit 21 , which is disposed inside the hollow beam 12 . The position fine-tuning unit 21 fine-adjusts the position of the truss 13 on the hollow beam 12 and the elevation angle between the truss 13 and the hollow beam 12 .

[0041] As a further limitation of the adjustment mechanism 2 of the present invention, the position fine-tuning unit 21 includes a plurality of fixed sleeves 2101, the inner wall of each fixed sleeve 2101 is in contact with the outer surface of the hollow beam 12, the surface of each fixed sleeve 2101 is slidably connected to a connecting ring 2102, the outer surface of each connecting ring 2102 is fixedly connected to the connecting frame 14, the outer surface of each connecting ring 2102 is provided with a worm gear groove 2103, the outer surface of each fixed sleeve 2101 is fixedly connected to a fixing frame 2104, the interior of each fixing frame 2104 is rotatably connected to a worm 2105, and each worm 2105 is meshed with the worm gear groove 2103 The outer surface of each worm 2105 is fixedly connected to the first large gear 2106, the interior of each fixed frame 2104 is rotatably connected to a rotating rod 2107, the outer surface of each rotating rod 2107 is fixedly connected to the first small gear 2108, the outer surface of each first small gear 2108 is meshed with the outer surface of the first large gear 2106, the outer surface of each rotating rod 2107 is fixedly connected to the second large gear 2109, the interior of each fixed frame 2104 is rotatably connected to a connecting rod 2110, the outer surface of each connecting rod 2110 is fixedly connected to the second small gear 2111, and each second small gear The outer surface of 2111 is meshed with the outer surface of the second large gear 2109, the inner wall of each fixed sleeve 2101 is fixedly connected with a sliding frame 2112, each sliding frame 2112 is slidably connected to the inside of the hollow beam 12, and the two hollow beams 12 are internally provided with a hollow screw 2113, the outer surfaces of the two hollow screws 2113 are respectively threadedly connected to the inner walls of the sliding frames 2112 on the outer sides of the two hollow beams 12, and the interiors of the two hollow screws 2113 are slidably connected with a rotating screw 2114, and the outer surfaces of the two rotating screws 2114 are respectively threadedly connected to the inner walls of the sliding frames 2112 on the inner sides of the two hollow beams 12. By providing a position fine-tuning unit 21, the elevation angle of the truss 13 on the hollow beam 12 can be fine-tuned by rotating the worm 2105, making the elevation angles of the multiple trusses 13 more consistent. Furthermore, the distance between the trusses 13 can be fine-tuned using the hollow screw 2113 and the rotating screw 2114, thereby increasing the accuracy of subsequent fixing of the heliostat lenses to the trusses 13. This allows the hollow beam 12 to fine-tune the position and elevation angle of the truss 13 according to the on-site installation requirements of the heliostat lenses, thereby reducing and eliminating minor errors during assembly of the truss 13 and improving the installation and matching accuracy between the hollow beam 12, truss 13, and heliostat lenses.

[0042] Each fixing sleeve 2101 is rotatably connected to a set of limiting rings 2115. Each set of limiting rings 2115 has two limiting rings 2115. The opposite sides of each set of limiting rings 2115 are fixedly connected to the outer surface of the connecting ring 2102. The limiting rings 2115 rotate inside the fixing sleeve 2101 to limit the position of the connecting ring 2102 inside the fixing sleeve 2101, thereby preventing the connecting ring 2102 from loosening from the fixing sleeve 2101.

[0043] The outer surfaces of the two hollow screws 2113 and the outer surfaces of the two rotating screws 2114 are slidingly connected to two stabilizing frames 2116. The outer surface of each stabilizing frame 2116 is fixedly connected to the inner wall of the hollow beam 12. The stabilizing frames 2116 can limit the positions of the hollow screws 2113 and the rotating screws 2114 inside the hollow beam 12 without affecting the smooth rotation of the hollow screws 2113 and the rotating screws 2114, thereby ensuring the reliability of the use of the hollow screws 2113 and the rotating screws 2114.

[0044] The specific implementation of this embodiment is as follows: after the plurality of trusses 13 are assembled on the hollow beam 12, if the installation surfaces of the plurality of trusses 13 are not flat enough due to assembly errors and the elevation angle tilting is required to be fine-tuned, it is only necessary to rotate the connecting rod 2110 in conjunction with the fixing frame 2104, and then the second large gear 2109 can be driven to rotate by the second small gear 2111. When the second large gear 2109 rotates, the first large gear 2106 can be driven to rotate by the first small gear 2108, and at this time the worm 2105 can be rotated, so that the worm The worm gear groove 2103 allows the connecting ring 2102 to rotate inside the fixing sleeve 2101, so that the elevation angle of the truss 13 on the hollow beam 12 can be fine-tuned through the connecting frame 14, so that the elevation angles of the multiple trusses 13 are more consistent, ensuring the flatness of the heliostat lens when installed on the truss 13. In addition, the first large gear 2106 cooperates with the first small gear 2108, the second large gear 2109, the second small gear 2111 and the worm 2105 to make the rotation fine-tuning of the connecting ring 2102 more precise. It is labor-saving and accurate. When the distance between the trusses 13 needs to be fine-tuned, it is only necessary to rotate the hollow screw 2113 in conjunction with the limit of the stabilizing frame 2116, and the sliding frame 2112 can slide inside the hollow beam 12, and then the fixing sleeve 2101 can pass through the connecting ring 2102 and the connecting frame 14 to drive the trusses 13 on the outside of the hollow beam 12 to fine-tune the position. Then, the rotating screw 2114 can be rotated to drive the trusses 13 on the inside of the hollow beam 12 through the sliding frame 2112, the fixing sleeve 2101, the connecting ring 2102 and the connecting frame 14. The truss 13 is fine-tuned in position, which increases the accuracy of the subsequent fixing of the heliostat lens on the truss 13. The hollow beam 12 can fine-tune the position and elevation angle of the truss 13 according to the on-site installation requirements of the heliostat lens, reducing and eliminating minor errors in the assembly of the truss 13 and the hollow beam 12, improving the installation and matching accuracy between the hollow beam 12, the truss 13 and the heliostat lens, and preventing the heliostat lens from being offset in installation due to assembly errors between the hollow beam 12 and the truss 13, thereby affecting the sunlight reflection accuracy of the heliostat lens.

[0045] Example 2: Please refer to Figure 4 、 Figure 5 、 Figure 7-10 、 Figure 14 The present invention provides a technical solution: a main beam of a medium-to-large heliostat. The present invention makes corresponding improvements to the technical problems mentioned in the background technology. The adjustment mechanism 2 also includes an adjustment limit unit 22. The adjustment limit unit 22 is arranged inside the position fine-tuning unit 21. The adjustment limit unit 22 is used to prevent the truss 13 from loosening after the elevation angle is adjusted.

[0046] As a further definition of the adjustment mechanism 2 of the present invention, the adjustment limit unit 22 includes a plurality of support seats 2201, the bottom surface of each support seat 2201 is fixedly connected to the upper surface of the fixing frame 2104, each support seat 2201 is rotatably connected to the connecting rod 2110, the outer surface of each connecting rod 2110 is fixedly connected to a positioning gear 2202, the inner wall of each support seat 2201 is fixedly connected to two compression springs 2203, the other end of each compression spring 2203 is fixedly connected to a clamping sleeve 2204, both side surfaces of each clamping sleeve 2204 are inclined surfaces, and the inner wall of each clamping sleeve 2204 is meshed with the outer surface of the positioning gear 2202. The inner bottom wall of each support seat 2201 is fixedly connected to a group of return springs 2205, and the number of each group of return springs 2205 is two. The top of each group of return springs 2205 is fixedly connected to a lower pressure frame 2206. The two side surfaces of each lower pressure frame 2206 are inclined surfaces. The inclined surfaces of each lower pressure frame 2206 are in contact with the inclined surfaces of the clamping sleeve 2204. The outer surface of each lower pressure frame 2206 is sleeved with a rotating bearing 2207. The bottom surface of the inner ring of each rotating bearing 2207 is fixedly connected to the upper surface of the lower pressure frame 2206. The outer surface of each rotating bearing 2207 is fixedly connected to the lower pressure plate 2208. The outer surface of each connecting rod 2110 is fixed The fixed connection limited seat 2209, the inner wall of each limited seat 2209 is rotatably hinged with a handle frame 2210, the top of each connecting rod 2110 is provided with a clamping groove 2211, each handle frame 2210 is clamped inside the clamping groove 2211, the upper surface of each handle frame 2210 is fixedly connected to a push frame 2212, the bottom surface of each push frame 2212 is an arc surface, the interior of each connecting ring 2102 is provided with a limited groove 2213 and an auxiliary groove 2214, the interior of each limited groove 2213 is slidably connected to two arc plates 2215, one side of each arc plate 2215 is an inclined surface, and the inner wall of each arc plate 2215 is fixedly connected There are fixing blocks 2216, and the interior of each fixing block 2216 is threadedly connected to an adjusting screw 2217. Each adjusting screw 2217 is rotatably connected to the interior of the fixing sleeve 2101. Each adjusting screw 2217 is arranged inside the auxiliary groove 2214. By providing the adjustment limit unit 22, it is convenient for the staff to smoothly adjust the elevation angle of the truss 13. At the same time, it can automatically lock or release the limit of the connecting rod 2110, thereby preventing the truss 13 from loosening after the elevation angle is adjusted. At the same time, the support and fixing effect of the truss 13 can be ensured by the movement of the two curved plates 2215, thereby ensuring the stability and bearing capacity of the truss 13 after the elevation angle is adjusted;

[0047] Each compression spring 2203 is provided with a first telescopic rod 2218 inside. The telescopic end of each first telescopic rod 2218 is fixedly connected to one side of the clamping sleeve 2204, and the other end of each first telescopic rod 2218 is fixedly connected to the inner wall of the support base 2201. The first telescopic rod 2218 can prevent the compression spring 2203 from deflecting, ensure the accuracy of the clamping sleeve 2204 when it is combined, and also improve the tightness of the meshing between the clamping sleeve 2204 and the positioning gear 2202.

[0048] A second telescopic rod 2219 is provided inside each return spring 2205. The telescopic end of each second telescopic rod 2219 is fixedly connected to the bottom surface of the lower pressure frame 2206, and the bottom end of each second telescopic rod 2219 is fixedly connected to the inner bottom wall of the support base 2201. The second telescopic rod 2219 can increase the telescopic stability of the return spring 2205, ensuring that the lower pressure frame 2206 is reset more accurately and reliably.

[0049] Two positioning rods 2220 are fixedly connected to the outer surface of each arc plate 2215, and each positioning rod 2220 is slidably connected to the inside of the fixed sleeve 2101. The positioning rod 2220 slides inside the fixed sleeve 2101, which can increase the movement stability of the arc plate 2215 while improving the pressure-bearing capacity of the arc plate 2215, further improving the reliability of the use of the arc plate 2215.

[0050] The specific implementation of this embodiment is as follows: when it is necessary to rotate the connecting rod 2110 to adjust the elevation angle of the truss 13, first use the hinged relationship between the limit seat 2209 and the handle frame 2210 to manually press the handle frame 2210 downward until the handle frame 2210 is snapped into the snap-in groove 2211. At this time, the pushing frame 2212 will also move downward with the handle frame 2210 and contact the lower pressing plate 2208, and push the lower pressing frame 2206 downward through the lower pressing plate 2208, forcing the return spring 2205 to contract under the limit of the second telescopic rod 2219. When the lower pressing frame 2206 moves downward, the inclined surface of the lower pressing frame 2206 and the inclined surface of the snap-in sleeve 2204 can be used to The two clamping sleeves 2204 are forced to move away from each other to release the meshing relationship with the positioning gear 2202, and at the same time, the compression spring 2203 is contracted under the limit of the first telescopic rod 2218. At this time, the handle frame 2210 is engaged with the clamping groove 2211, and the connecting rod 2110 can be rotated by the handle frame 2210 to ensure the normal adjustment of the elevation angle of the truss 13. At the same time, the rotating bearing 2207 can prevent the arc surface of the pushing frame 2212 from directly rubbing against the lower pressure plate 2208, and the lower pressure plate 2208 can be rotated with the rotation of the pushing frame 2212, further ensuring the smooth rotation of the connecting rod 2110. When the elevation angle of the truss 13 is adjusted, the lower pressure plate 2208 can be rotated. After completion, it is only necessary to loosen the handle frame 2210 and use the elastic force provided by the reset spring 2205 to push the lower pressure frame 2206 to move upward and reset. Then the compression spring 2203 will also push the two clamping sleeves 2204 to merge again, and let the clamping sleeve 2204 re-engage with the positioning gear 2202 to limit the position of the connecting rod 2110 after rotation, thereby automatically locking or loosening the limit of the connecting rod 2110, preventing the truss 13 from loosening after the elevation angle is adjusted, and ensuring the stability of the truss 13 after fine-tuning the elevation angle. When the truss 13 elevation angle is fine-tuned, the manual rotation of the adjusting screw 2217 can drive the curved plate 2215 on the positioning rod through the fixing block 2216. 2220, until the two curved plates 2215 slide inside the limiting groove 2213 until the inclined surfaces of the two curved plates 2215 are in contact with the inner wall of the limiting groove 2213. Since the adjusting screw 2217 is rotatably connected to the inside of the fixing sleeve 2101, the positioning rod 2220 is also slidably connected to the inside of the fixing sleeve 2101, so the position of the connecting ring 2102 inside the fixing sleeve 2101 after fine-tuning can be further limited. It can also share the limiting pressure of the worm 2105 on the connecting ring 2102 through the worm gear groove 2103 to a certain extent, thereby ensuring the stability of the truss 13 after the elevation angle is adjusted and the load-bearing capacity of the heliostat lens.

[0051] Example 3: Please refer to Figure 6 、 Figure 11-13The present invention provides a technical solution: a main beam of a medium-to-large heliostat. The present invention makes corresponding improvements to the technical problems mentioned in the background technology. A positioning mechanism 3 is provided inside the position fine-tuning unit 21. The positioning mechanism 3 is used in conjunction with the adjustment mechanism 2. The positioning mechanism 3 is used to position the truss 13 after sliding adjustment on the hollow beam 12.

[0052] As a further limitation of the positioning mechanism 3 of the present invention, the positioning mechanism 3 includes two toothed discs 301, the outer surfaces of the two toothed discs 301 are fixedly connected to the inner wall of the hollow beam 12, the outer surfaces of the two hollow screws 2113 are fixedly connected to the fixed disc 302, one side of the two fixed discs 302 are fixedly connected to the auxiliary plate 303, the interior of the two auxiliary plates 303 are slidably connected to the guide rod 304, the outer surfaces of the two hollow screws 2113 are provided with a socket 305, the outer surfaces of the two guide rods 304 are sleeved with a connecting spring 306, and the two connecting springs 3 One end of each of the two connecting springs 306 is fixedly connected to the upper surface of the auxiliary plate 303, and the other ends of the two connecting springs 306 are fixedly connected to the clamping blocks 307. The top ends of the two guide rods 304 are fixedly connected to the bottom surfaces of the two clamping blocks 307, and the upper surfaces of the two clamping blocks 307 are respectively engaged with the inner walls of the two toothed discs 301. One side of the two clamping blocks 307 is fixedly connected to the handle 308. The ends of the two hollow beams 12 away from each other are fixedly connected to the gear sleeves 309. The outer surfaces of the two gear sleeves 309 are fixedly connected to the auxiliary bearings 310. The two auxiliary bearings The outer surface of each of the two rotating cylinders 311 is fixedly connected to a rotating cylinder 311, and the interior of each of the two rotating cylinders 311 is slidably connected to a sliding bar 312. The two sliding bars 312 are respectively slidably connected to the interior of the two rotating screws 2114. The tops of the two sliding bars 312 are fixedly connected to a handle 313. The outer surfaces of the two sliding bars 312 are sleeved with a limit spring 314. One end of the two limit springs 314 is respectively fixedly connected to the bottom surfaces of the two handles 313, and the other ends of the two limit springs 314 are respectively fixedly connected to the outer surfaces of the two rotating cylinders 311. The two sliding bars 312 are respectively slidably connected to the interior of the two rotating screws 2114. The outer surfaces of the two tooth groove seats 315 are fixedly connected. The upper surfaces of the two tooth groove seats 315 are respectively meshed with the inner walls of the two gear sleeves 309. By providing the positioning mechanism 3, the positions of the hollow screw 2113 and the rotating screw 2114 after rotation can be positioned without affecting the smooth rotation of the hollow screw 2113 and the rotating screw 2114. Furthermore, the position after the distance between the trusses 13 is adjusted can be positioned, so that the trusses 13 are not prone to loosening after fine-tuning the distance on the hollow beam 12 as needed, thereby ensuring the stability of the trusses 13 after the position adjustment.

[0053] Two sliding grooves 316 are provided on one side of the two fixed plates 302, and two sliders 317 are fixedly connected to the bottom surfaces of the two clamping blocks 307. Each slider 317 is slidably connected to the inside of the sliding groove 316. By moving the slider 317 inside the sliding groove 316, not only can the distance of the clamping block 307 when moving downward be limited, but also the tightness of the fit between the clamping block 307 and the fixed plate 302 can be increased, making the clamping block 307 more stable and reliable when moving.

[0054] The specific implementation of this embodiment is as follows: when it is necessary to rotate the hollow screw 2113 to adjust the position of the truss 13 outside the hollow beam 12, first manually hold the handle 308 and press the clamping block 307 downward through the handle 308 until the clamping block 307 drives the slider 317 to slide to the bottom of the sliding groove 316. At this time, the clamping block 307 is disengaged from the toothed plate 301, the connecting spring 306 is contracted, and the guide rod 304 passes through the auxiliary plate 303 and is inserted into the inside of the socket 305. At this time, the handle 308 can be used to coordinate the guide rod 304, the socket 305, the auxiliary plate 303 and the fixed plate 302. When the hollow screw 2113 is rotated, the outer sliding frame 2112 can be used to drive the outer truss 13 of the hollow beam 12 to fine-tune the distance. When the outer truss 13 is fine-tuned, just release the handle 308. The elastic force provided by the connecting spring 306 can push the clamping block 307 to re-engage with the toothed disc 301. When it is necessary to rotate the rotating screw 2114 to fine-tune the position of the truss 13 inside the hollow beam 12, first manually press down the handle 313 to force the limit spring 314 to contract. At the same time, the tooth groove seat 315 will also disengage from the tooth sleeve 309. When the handle 313 is closed, the sliding bar 312 and the auxiliary bearing 310 can be used to rotate the rotating cylinder 311. Since the sliding bar 312 is slidably connected inside the rotating screw 2114, when the rotating cylinder 311 rotates, the rotating screw 2114 can also be driven to rotate through the sliding bar 312. When the rotating screw 2114 rotates, it can cooperate with the inner sliding frame 2112 to drive the inner truss 13 to fine-tune the position. When the position of the inner truss 13 is fine-tuned, just release the handle 313 and use the elastic force provided by the limit spring 314 to push the handle 313 upward. Reset and make the tooth groove seat 315 engage with the gear sleeve 309 again. The engagement of the tooth groove seat 315 and the gear sleeve 309 can prevent the rotating cylinder 311 and the rotating screw 2114 from rotating, so that the positions of the hollow screw 2113 and the rotating screw 2114 after rotation can be located without affecting the smooth rotation of the hollow screw 2113 and the rotating screw 2114, and then the position after the distance between the trusses 13 is adjusted can be located, so that the trusses 13 are not prone to loosening after fine-tuning the distance on the hollow beam 12 as needed, thereby ensuring the stability of the truss 13 after position adjustment.

[0055] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A main beam of a medium or large heliostat, comprising a support mechanism (1), characterized in that: The support mechanism (1) comprises a mounting seat (11), both ends of the mounting seat (11) are fixedly connected to hollow beams (12), two trusses (13) are provided outside the two hollow beams (12), the outer surface of each truss (13) is fixedly connected to a connecting frame (14), and the interior of the two hollow beams (12) is commonly provided with an adjustment mechanism (2); The adjustment mechanism (2) includes a position fine-tuning unit (21), the position fine-tuning unit (21) is arranged inside the hollow beam (12), and the position fine-tuning unit (21) fine-tunes the position of the truss (13) on the hollow beam (12), and the elevation angle between the truss (13) and the hollow beam (12); The adjustment mechanism (2) further comprises an adjustment limit unit (22), wherein the adjustment limit unit (22) is arranged inside the position fine-tuning unit (21), and the adjustment limit unit (22) is used to prevent the truss (13) from loosening after the elevation angle is adjusted; A positioning mechanism (3) is provided inside the position fine-tuning unit (21), and the positioning mechanism (3) is used in conjunction with the adjustment mechanism (2). The positioning mechanism (3) is used to position the truss (13) after sliding adjustment on the hollow beam (12); The positioning mechanism (3) comprises two toothed discs (301), the outer surfaces of the two toothed discs (301) are fixedly connected to the inner wall of the hollow beam (12), the interiors of the two hollow beams (12) are provided with hollow screws (2113), the outer surfaces of the two hollow screws (2113) are fixedly connected to the fixed disc (302), one side of the two fixed discs (302) is fixedly connected to the auxiliary plate (303), the interiors of the two auxiliary plates (303) are slidably connected to the guide rod (304), the outer surfaces of the two hollow screws (2113) are provided with a socket (305), the two guide rods (3 04) are sleeved with connecting springs (306), one end of each of the connecting springs (306) is fixedly connected to the upper surface of the auxiliary plate (303), the other end of each of the connecting springs (306) is fixedly connected to a clamping block (307), the top ends of the two guide rods (304) are fixedly connected to the bottom surfaces of the two clamping blocks (307), the upper surfaces of the two clamping blocks (307) are respectively engaged with the inner walls of the two toothed discs (301), one side of each of the two clamping blocks (307) is fixedly connected to a handle (308), and the ends of the two hollow beams (12) that are away from each other are fixedly connected to a toothed disc The outer surfaces of the two gear sleeves (309) are fixedly connected to auxiliary bearings (310), the outer surfaces of the two auxiliary bearings (310) are fixedly connected to rotating cylinders (311), the interiors of the two rotating cylinders (311) are slidably connected to sliding bars (312), the two sliding bars (312) are slidably connected to the interiors of the two rotating screws (2114), the tops of the two sliding bars (312) are fixedly connected to handles (313), the outer surfaces of the two sliding bars (312) are sleeved with limit springs (314), one end of the two limit springs (314) is respectively connected to the inner ends of the two rotating screws (2114). The bottom surfaces of the two handles (313) are fixedly connected, the other ends of the two limit springs (314) are fixedly connected to the outer surfaces of the two rotating cylinders (311), the outer surfaces of the two sliding bars (312) are fixedly connected to the tooth groove seats (315), the upper surfaces of the two tooth groove seats (315) are respectively engaged with the inner walls of the two gear sleeves (309), and two sliding grooves (316) are provided on one side of the two fixed plates (302). The bottom surfaces of the two clamping blocks (307) are fixedly connected to two sliders (317), and each slider (317) is slidably connected to the inside of the sliding groove (316).

2. A medium to large heliostat main beam according to claim 1, characterized in that: The position fine-tuning unit (21) includes a plurality of fixing sleeves (2101), the inner wall of each fixing sleeve (2101) contacts the outer surface of the hollow beam (12), the surface of each fixing sleeve (2101) is slidably connected to a connecting ring (2102), the outer surface of each connecting ring (2102) is fixedly connected to the connecting frame (14), the outer surface of each connecting ring (2102) is provided with a worm gear groove (2103), and the outer surface of each fixing sleeve (2101) is fixedly connected to the fixing frame. (2104), the interior of each of the fixed frames (2104) is rotatably connected to a worm (2105), each of the worms (2105) is meshed with the worm wheel groove (2103), the outer surface of each of the worms (2105) is fixedly connected to a first large gear (2106), the interior of each of the fixed frames (2104) is rotatably connected to a rotating rod (2107), the outer surface of each of the rotating rods (2107) is fixedly connected to a first small gear (2108), and each of the first small gears (2108) is fixedly connected to the outer surface of the rotating rod (2107). ) are meshed with the outer surface of the first large gear (2106), the outer surface of each rotating rod (2107) is fixedly connected to the second large gear (2109), the interior of each fixing frame (2104) is rotatably connected to a connecting rod (2110), the outer surface of each connecting rod (2110) is fixedly connected to a second small gear (2111), the outer surface of each second small gear (2111) is meshed with the outer surface of the second large gear (2109), and each fixing sleeve (2101) is fixedly connected to the outer surface of the second large gear (2109). The inner walls of the hollow beams (12) are fixedly connected with a sliding frame (2112), each of the sliding frames (2112) is slidably connected to the inside of the hollow beam (12), the outer surfaces of the two hollow screw rods (2113) are respectively threadedly connected to the inner walls of the sliding frames (2112) on the outer sides of the two hollow beams (12), the interiors of the two hollow screw rods (2113) are slidably connected with a rotating screw rod (2114), and the outer surfaces of the two rotating screw rods (2114) are respectively threadedly connected to the inner walls of the sliding frames (2112) on the inner sides of the two hollow beams (12).

3. The main beam of a medium to large heliostat according to claim 2, characterized in that: A set of limiting rings (2115) is rotatably connected to the interior of each fixing sleeve (2101), and each set of limiting rings (2115) has two limiting rings. The opposite sides of each set of limiting rings (2115) are fixedly connected to the outer surface of the connecting ring (2102).

4. The main beam of a medium to large heliostat according to claim 2, characterized in that: The outer surfaces of the two hollow screws (2113) and the outer surfaces of the two rotating screws (2114) are both slidably connected to two stabilizing frames (2116), and the outer surface of each stabilizing frame (2116) is fixedly connected to the inner wall of the hollow beam (12).

5. The main beam of a medium to large heliostat according to claim 2, characterized in that: The adjustment limit unit (22) includes a plurality of support seats (2201), the bottom surface of each support seat (2201) is fixedly connected to the upper surface of the fixing frame (2104), each support seat (2201) is rotatably connected to the connecting rod (2110), the outer surface of each connecting rod (2110) is fixedly connected to a positioning gear (2202), the inner wall of each support seat (2201) is fixedly connected to two compression springs (2203), the other end of each compression spring (2203) is fixedly connected to a snap-fit ​​sleeve (2204), both side surfaces of each snap-fit ​​sleeve (2204) are inclined surfaces, and each snap-fit ​​sleeve (2201) is fixedly connected to the inner wall of each support seat (2201). 04) are meshed with the outer surface of the positioning gear (2202), the inner bottom wall of each support seat (2201) is fixedly connected to a group of reset springs (2205), the number of each group of reset springs (2205) is two, the top of each group of reset springs (2205) is fixedly connected to a lower pressure frame (2206), the two side surfaces of each lower pressure frame (2206) are inclined surfaces, the inclined surfaces of each lower pressure frame (2206) are in contact with the inclined surfaces of the clamping sleeve (2204), the outer surface of each lower pressure frame (2206) is sleeved with a rotating bearing (2207), the bottom surface of the inner ring of each rotating bearing (2207) is in contact with the lower pressure frame (2206), and the inner wall of each support seat (2201) is fixedly connected to a group of reset springs (2205), the number of each group of reset springs (2205) is two, the top of each group of reset springs (2205) is fixedly connected to a lower pressure frame (2206), the two side surfaces of each lower pressure frame (2206) are inclined surfaces, the inclined surfaces of each lower pressure frame (2206) are in contact with the inclined surfaces of the clamping sleeve (2204), the outer surface of each lower pressure frame (2206) is sleeved with a rotating bearing (2207), and the bottom surface of the inner ring of each rotating bearing (2207) is in contact with the lower pressure frame (2206). The upper surface of the pressure frame (2206) is fixedly connected, the outer surface of each rotating bearing (2207) is fixedly connected to the lower pressure plate (2208), the outer surface of each connecting rod (2110) is fixedly connected to the limiting seat (2209), the inner wall of each limiting seat (2209) is rotatably hinged with a handle frame (2210), the top of each connecting rod (2110) is provided with a clamping groove (2211), each handle frame (2210) is clamped inside the clamping groove (2211), the upper surface of each handle frame (2210) is fixedly connected to a push frame (2212), and the bottom surface of each push frame (2212) is The connecting ring (2102) is provided with a limiting groove (2213) and an auxiliary groove (2214) inside. Two arc-shaped plates (2215) are slidably connected inside the limiting groove (2213). One side surface of each arc-shaped plate (2215) is an inclined surface. The inner wall of each arc-shaped plate (2215) is fixedly connected with a fixing block (2216). The interior of each fixing block (2216) is threadedly connected with an adjusting screw (2217). Each adjusting screw (2217) is rotatably connected to the interior of the fixing sleeve (2101). Each adjusting screw (2217) is arranged inside the auxiliary groove (2214).

6. The main beam of a medium to large heliostat according to claim 5, characterized in that: A first telescopic rod (2218) is provided inside each of the compression springs (2203), the telescopic end of each of the first telescopic rods (2218) is fixedly connected to one side of the snap-fit ​​sleeve (2204), and the other end of each of the first telescopic rods (2218) is fixedly connected to the inner wall of the support seat (2201).

7. The main beam of a medium to large heliostat according to claim 5, characterized in that: A second telescopic rod (2219) is provided inside each of the return springs (2205), the telescopic end of each of the second telescopic rods (2219) is fixedly connected to the bottom surface of the lower pressure frame (2206), and the bottom end of each of the second telescopic rods (2219) is fixedly connected to the inner bottom wall of the support seat (2201).

8. The main beam of a medium to large heliostat according to claim 5, characterized in that: The outer surface of each arc-shaped plate (2215) is fixedly connected to two positioning rods (2220), and each positioning rod (2220) is slidably connected to the interior of the fixing sleeve (2101).

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