Middle and large heliostat main beam

Abstract

The invention discloses a middle and large heliostat main beam, and relates to the technical field of heliostat main beams, the middle and large heliostat main beam comprises a supporting mechanism, the supporting mechanism comprises a mounting seat, hollow beams are fixedly connected to the two ends of the mounting seat, two trusses are arranged outside the two hollow beams, the outer surface of each truss is fixedly connected with a connecting frame, and the connecting frames are fixedly connected with the mounting seat. According to the middle-large heliostat main beam, the elevation angles of the trusses on the hollow beams can be finely adjusted through the worms, so that the elevation angles among the trusses tend to be consistent, the distances among the trusses can be finely adjusted through the hollow screw rods and the rotating screw rods, and the adjustment accuracy is improved. The accuracy of subsequent fixation of the heliostat lens on the truss is improved, so that the hollow beam can finely adjust the position and the elevation angle of the truss according to the field installation requirement of the heliostat lens, small errors generated when the truss and the hollow beam are assembled are reduced and eliminated, and the assembly accuracy among the hollow beam, the truss and the heliostat lens is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heliostat main beams, and specifically to a medium and large-sized heliostat main beam. Background Technique

[0002] A heliostat is a light-gathering device of a tower-type solar thermal system. The reflecting surface of the heliostat tracks the sun, reflects and concentrates sunlight onto a fixed target. Currently, the reflecting surface of the heliostat generally uses a silver-plated glass mirror. The silver-plated glass mirror has advantages such as high reflectivity and long service life. In order to ensure that the heliostat can better track the sun, the heliostat needs columns to cooperate with the main beam to support multiple heliostats, and an angle and direction adjustment mechanism needs to be used in cooperation with the heliostat main beam to simultaneously adjust the azimuths of multiple heliostats according to the change of the sun's position, so that the heliostat can smoothly track the sun.

[0003] When the existing heliostat main beam is in use, in order to better support the heliostat, the heliostat main beam needs to cooperate with a truss to stabilize the positions of multiple heliostat lenses. The connection between the heliostat main beam and the truss is mainly fixed by welding or bolt connection, and it cannot be finely adjusted according to the on-site installation needs. Due to the large volume of the medium and large-sized heliostat main beam, it is very easy to have tiny errors when multiple trusses are assembled on the heliostat main beam, resulting in errors when the subsequent heliostat lenses are fixed on the truss, affecting the flatness of the cooperation between multiple heliostat lenses. Because the site radius of the medium and large-sized heliostat is usually 450 meters, and the farthest straight-line distance from the heliostat to the heat absorber is nearly 500 meters, due to the tiny connection error between the heliostat main beam and the truss, it will seriously affect the light reflection accuracy of the heliostat lens, and thus reduce the installation accuracy of the heliostat main beam for the heliostat lens.

[0004] Combining the above problems, we will find that when the existing medium and large-sized heliostat main beam is in use, it is very difficult to avoid the above-mentioned problems at the same time, and even if it can be solved, it needs to be solved with the cooperation of external tools, thus unable to achieve the desired effect. Therefore, we propose a medium and large-sized heliostat main beam. Summary of the Invention

[0005] The purpose of the present invention is to provide a medium and large-sized heliostat main beam to solve the problems mentioned in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A medium and large-sized heliostat main beam, including a support mechanism. The support mechanism includes a mounting seat. Both ends of the mounting seat are fixedly connected with hollow beams. Two trusses are arranged outside each of the two hollow beams. A connecting frame is fixedly connected to the outer surface of each truss. An adjusting mechanism is jointly arranged inside the two hollow beams; The adjusting mechanism includes a position fine-tuning unit which is arranged inside the hollow beam. The position fine-tuning unit can finely adjust the position of the truss on the hollow beam and the elevation angle between the truss and the hollow beam. The adjusting mechanism further includes an adjusting limit unit which is arranged inside the position fine-tuning unit. The adjusting limit unit is used to prevent the truss from loosening after the elevation angle is adjusted. A positioning mechanism is arranged inside the position fine-tuning unit. The positioning mechanism is used in cooperation with the adjusting mechanism and is used to position the position of the truss after sliding adjustment on the hollow beam.

[0007] Preferably, the position fine-tuning unit includes a plurality of fixed sleeves. The inner wall of each fixed sleeve is in contact with the outer surface of the hollow beam. A connecting ring is slidably connected to the surface of each fixed sleeve. The outer surface of each connecting ring is fixedly connected to a connecting frame. A worm gear groove is formed on the outer surface of each connecting ring. A fixed frame is fixedly connected to the outer surface of each fixed sleeve. A worm is rotatably connected inside each fixed frame. Each worm is meshed with the worm gear groove. A first large gear is fixedly connected to the outer surface of each worm. A rotating rod is rotatably connected inside each fixed frame. A first small gear is fixedly connected to the outer surface of each rotating rod. The outer surface of each first small gear is meshed with the outer surface of the first large gear. A second large gear is fixedly connected to the outer surface of each rotating rod. A connecting rod is rotatably connected inside each fixed frame. A second small gear is fixedly connected to the outer surface of each connecting rod. The outer surface of each second small gear is meshed with the outer surface of the second large gear. A sliding frame is fixedly connected to the inner wall of each fixed sleeve. Each sliding frame is slidably connected inside the hollow beam. Hollow screws are arranged inside the two hollow beams. The outer surfaces of the two hollow screws are threadedly connected to the inner walls of the sliding frames on the outer sides of the two hollow beams respectively. Rotating screws are slidably connected inside the two hollow screws. The outer surfaces of the two rotating screws are threadedly connected to the inner walls of the sliding frames on the inner sides of the two hollow beams respectively.

[0008] Preferably, a group of limit rings is rotatably connected inside each fixed sleeve. The number of each group of limit rings is two. The opposite sides of each group of limit rings are fixedly connected to the outer surface of the connecting ring.

[0009] Preferably, two stabilizing frames are slidably connected to the outer surfaces of the two hollow screws and the outer surfaces of the two rotating screws. The outer surface of each stabilizing frame is fixedly connected to the inner wall of the hollow beam.

[0010] Preferably, the adjustment and limit unit includes a plurality of support seats. The bottom surface of each support seat is fixedly connected to the upper surface of the fixed frame. Each support seat is rotatably connected to a connecting rod. A positioning gear is fixedly connected to the outer surface of each connecting rod. Two compression springs are fixedly connected to the inner wall of each support seat. The other end of each compression spring is fixedly connected to a clamping sleeve. Both side surfaces of each clamping sleeve are inclined surfaces. The inner wall of each clamping sleeve meshes with the outer surface of the positioning gear. A group of return springs is fixedly connected to the inner bottom wall of each support seat. The number of each group of return springs is two. The top end of each group of return springs is fixedly connected to a pressing frame. Both side surfaces of each pressing frame are inclined surfaces. The inclined surface of each pressing frame contacts the inclined surface of the clamping sleeve. A rotating bearing is sleeved on the outer surface of each pressing frame. The bottom surface of the inner ring of each rotating bearing is fixedly connected to the upper surface of the pressing frame. A lower pressing plate is fixedly connected to the outer surface of each rotating bearing. A limit seat is fixedly connected to the outer surface of each connecting rod. A handle frame is rotatably hinged to the inner wall of each limit seat. A clamping groove is formed at the top end of each connecting rod. Each handle frame is clamped inside the clamping groove. A pushing frame is fixedly connected to the upper surface of each handle frame. The bottom surface of each pushing frame is an arc surface. A limit groove and an auxiliary groove are formed inside each connecting ring. Two arc-shaped plates are slidably connected inside each limit groove. One side surface of each arc-shaped plate is an inclined surface. A fixing block is fixedly connected to the inner wall of each arc-shaped plate. An adjusting screw is threadedly connected inside each fixing block. Each adjusting screw is rotatably connected inside a fixed sleeve. Each adjusting screw is arranged inside the auxiliary groove.

[0011] Preferably, a first telescopic rod is arranged inside each compression spring. The telescopic end of each first telescopic rod is fixedly connected to one side surface of the clamping sleeve. The other end of each first telescopic rod is fixedly connected to the inner wall of the support seat.

[0012] Preferably, a second telescopic rod is arranged inside each return spring. The telescopic end of each second telescopic rod is fixedly connected to the bottom surface of the pressing frame. The bottom end of each second telescopic rod is fixedly connected to the inner bottom wall of the support seat.

[0013] Preferably, two positioning rods are fixedly connected to the outer surface of each arc-shaped plate. Each positioning rod is slidably connected inside the fixed sleeve.

[0014] Preferably, the positioning mechanism includes two toothed discs, the outer surfaces of both toothed discs are fixedly connected to the inner wall of the hollow beam, fixing discs are fixedly connected to the outer surfaces of both hollow screws, auxiliary plates are fixedly connected to one side surface of both fixing discs, guide rods are slidably connected inside both auxiliary plates, insertion holes are formed in the outer surfaces of both hollow screws, connecting springs are sleeved on the outer surfaces of both guide rods, one ends of both connecting springs are fixedly connected to the upper surface of the auxiliary plates, the other ends of both connecting springs are fixedly connected to clamping blocks, the top ends of both guide rods are fixedly connected to the bottom surfaces of both clamping blocks respectively, the upper surfaces of both clamping blocks are meshed and connected to the inner walls of both toothed discs respectively, handles are fixedly connected to one side surface of both clamping blocks, tooth sleeves are fixedly connected to the mutually remote ends of both hollow beams, auxiliary bearings are fixedly connected to the outer surfaces of both tooth sleeves, rotating cylinders are fixedly connected to the outer surfaces of both auxiliary bearings, sliding bars are slidably connected inside both rotating cylinders, the two sliding bars are respectively slidably connected inside the two rotating screws, grips are fixedly connected to the top ends of both sliding bars, limiting springs are sleeved on the outer surfaces of both sliding bars, one ends of both limiting springs are fixedly connected to the bottom surfaces of both grips respectively, the other ends of both limiting springs are fixedly connected to the outer surfaces of both rotating cylinders respectively, tooth groove seats are fixedly connected to the outer surfaces of both sliding bars, and the upper surfaces of both tooth groove seats are meshed and connected to the inner walls of both tooth sleeves respectively.

[0015] Preferably, two sliding grooves are formed in one side surface of both fixing discs, two sliders are fixedly connected to the bottom surface of both clamping blocks, and each slider is slidably connected inside the sliding groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing the position fine-tuning unit, the present invention can fine-tune the elevation angle of the truss on the hollow beam by rotating the worm, making the elevation angles between multiple trusses more consistent. Moreover, by using the hollow screw and the rotating screw, the distance between the trusses can be fine-tuned, increasing the accuracy when the subsequent heliostat lenses are fixed on the trusses, enabling the hollow beam to fine-tune the position and elevation angle of the truss according to the on-site installation requirements of the heliostat lenses, reducing and eliminating the small errors during the assembly of the truss and the hollow beam, and improving the installation and matching accuracy among the hollow beam, the truss, and the heliostat lenses. By providing the adjustment and limiting unit, the present invention can facilitate the staff to smoothly adjust the elevation angle of the truss, and can automatically lock or release the limitation on the connecting rod, thereby preventing the truss from loosening after the elevation angle is adjusted. At the same time, the support and fixing effect on the truss can also be ensured by the movement of the two arc-shaped plates, playing a role in ensuring the stability and load-bearing capacity of the truss after the elevation angle is adjusted. By providing a positioning mechanism, the present invention can position the positions of the hollow screw and the rotating screw after rotation without affecting their smooth rotation, and further can position 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, ensuring the stability of the trusses after the position adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the fixing sleeve and the hollow beam of the present invention; Figure 3 is a schematic diagram of the structure of the connecting frame of the present invention; Figure 4 is a right view schematic diagram of the connecting ring of the present invention; Figure 5 is a sectional view schematic diagram of the fixing frame of the present invention; Figure 6 is a sectional view schematic diagram of the hollow beam of the present invention; Figure 7 is a right view schematic diagram of the arc-shaped plate of the present invention; Figure 8 is a schematic diagram of the structure of the pushing frame of the present invention; Figure 9 is a schematic diagram of the structure of the connecting rod and the handle frame of the present invention; Figure 10 is a schematic diagram of the structure of the support seat of the present invention; Figure 11 is a sectional view schematic diagram of the gear disk of the present invention; Figure 12 is a schematic diagram of the structure of the guide rod of the present invention; Figure 13 is a sectional view schematic diagram of the rotating cylinder of the present invention; Figure 14 is a sectional view schematic diagram of the pressing frame of the present invention.

[0018] In the figure: 1. Support mechanism; 11. Mounting base; 12. Hollow beam; 13. Truss; 14. Connecting frame; 2. Adjusting mechanism; 21. Position fine-tuning unit; 2101. Fixed sleeve; 2102. Connecting ring; 2103. Worm gear groove; 2104. Fixed 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. Stabilizing frame; 22. Adjusting and limiting unit; 2201. Support base; 2202. Positioning gear; 2203. Compression spring; 2204. Clamping sleeve; 2205. Return spring; 2206. Pressing frame; 2207. Rotating bearing; 2208. Lower pressing plate; 2209. Limiting seat; 2210. Handle frame; 2211. Clamping groove; 2212. Pushing frame; 2213. Limiting 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. Tooth disc; 302. Fixed disc; 303. Auxiliary plate; 304. Guide rod; 305. Jack; 306. Connecting spring; 307. Clamping block; 308. Handle; 309. Tooth sleeve; 310. Auxiliary bearing; 311. Rotating cylinder; 312. Sliding strip; 313. Grip; 314. Limiting spring; 315. Tooth groove seat; 316. Sliding groove; 317. Slide block. Specific implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment 1: Please refer to Figures 1-6 , the present invention provides a technical solution: A main beam of a medium and large-sized heliostat, including a support mechanism 1, the support mechanism 1 includes a mounting base 11, both ends of the mounting base 11 are fixedly connected with hollow beams 12, two hollow beams 12 are externally provided with two trusses 13, the outer surface of each truss 13 is fixedly connected with a connecting frame 14, and an adjusting mechanism 2 is jointly arranged inside the two hollow beams 12; The adjusting 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 can finely adjust the position of the truss 13 on the hollow beam 12 and the elevation angle between the truss 13 and the hollow beam 12.

[0021] As a further limitation of the adjusting 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. A connecting ring 2102 is slidably connected to the surface of each fixed sleeve 2101. The outer surface of each connecting ring 2102 is fixedly connected to the connecting frame 14. A worm gear groove 2103 is formed on the outer surface of each connecting ring 2102. A fixed frame 2104 is fixedly connected to the outer surface of each fixed sleeve 2101. A worm 2105 is rotatably connected to the inside of each fixed frame 2104. Each worm 2105 is meshed with the worm gear groove 2103. A first large gear 2106 is fixedly connected to the outer surface of each worm 2105. A rotating rod 2107 is rotatably connected to the inside of each fixed frame 2104. A first small gear 2108 is fixedly connected to the outer surface of each rotating rod 2107. The outer surface of each first small gear 2108 is meshed with the outer surface of the first large gear 2106. A second large gear 2109 is fixedly connected to the outer surface of each rotating rod 2107. A connecting rod 2110 is rotatably connected to the inside of each fixed frame 2104. A second small gear 2111 is fixedly connected to the outer surface of each connecting rod 2110. The outer surface of each second small gear 2111 is meshed with the outer surface of the second large gear 2109. A sliding frame 2112 is fixedly connected to the inner wall of each fixed sleeve 2101. Each sliding frame 2112 is slidably connected to the inside of the hollow beam 12. Hollow screws 2113 are arranged inside the two hollow beams 12. The outer surfaces of the two hollow screws 2113 are threadedly connected to the inner walls of the sliding frames 2112 on the outer sides of the two hollow beams 12 respectively. A rotating screw 2114 is slidably connected to the inside of each of the two hollow screws 2113. The outer surfaces of the two rotating screws 2114 are threadedly connected to the inner walls of the sliding frames 2112 on the inner sides of the two hollow beams 12 respectively. By providing the 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, so that the elevation angles between the multiple trusses 13 are more consistent. And by using the hollow screw 2113 and the rotating screw 2114, the distance between the trusses 13 can be fine-tuned, increasing the accuracy when the heliostat mirrors are fixed on the trusses 13 later, so that 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 mirrors, reducing and eliminating the small errors during the assembly of the truss 13 and the hollow beam 12, and improving the installation and matching accuracy among the hollow beam 12, the truss 13 and the heliostat mirrors; A set of limiting rings 2115 are rotatably connected to the inside of each fixed sleeve 2101. The number of each set of limiting rings 2115 is two. 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 fixed sleeve 2101, which can limit the position of the connecting ring 2102 inside the fixed sleeve 2101 and prevent the connecting ring 2102 from becoming loose from the fixed sleeve 2101. Two stabilizing frames 2116 are slidably connected to the outer surfaces of the two hollow screws 2113 and the outer surfaces of the two rotating screws 2114. 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 while not affecting the smooth rotation of the hollow screws 2113 and the rotating screws 2114, ensuring the reliability of the use of the hollow screws 2113 and the rotating screws 2114.

[0022] The specific implementation manner of this embodiment is as follows: When multiple trusses 13 are assembled onto the hollow beam 12, if there is an elevation angle inclination due to assembly errors, resulting in uneven installation surfaces between the multiple trusses 13 and fine adjustment is required, only by rotating the connecting rod 2110 in cooperation with the fixing frame 2104, the second large gear 2109 can be driven to rotate through the second small gear 2111. When the second large gear 2109 rotates, the first large gear 2106 can be driven to rotate through the first small gear 2108. At this time, the worm 2105 can be rotated, so that the worm 2105 can pass through the worm gear groove 2103 to make the connecting ring 2102 rotate inside the fixed sleeve 2101. Thus, the elevation angle of the truss 13 on the hollow beam 12 can be finely adjusted through the connecting frame 14, making the elevation angles between the multiple trusses 13 more consistent, ensuring the flatness when the heliostat mirror is installed on the truss 13. Moreover, by using the first large gear 2106 in cooperation with the first small gear 2108, the second large gear 2109, the second small gear 2111, and the worm 2105, the rotational fine adjustment of the connecting ring 2102 can be made more labor-saving and accurate. When fine adjustment of the distance between the trusses 13 is required, only by rotating the hollow screw 2113 and with the limit of the stabilizing frame 2116, the sliding frame 2112 can slide inside the hollow beam 12. Then, the fixing sleeve 2101 can drive the truss 13 outside the hollow beam 12 to perform position fine adjustment through the connecting ring 2102 and the connecting frame 14. Then, by rotating the rotating screw 2114, the truss 13 inside the hollow beam 12 can also be driven to perform position fine adjustment through the sliding frame 2112, the fixing sleeve 2101, the connecting ring 2102, and the connecting frame 14, increasing the accuracy when the subsequent heliostat mirror is fixed on the truss 13. This enables the hollow beam 12 to finely adjust the position and elevation angle of the truss 13 according to the on-site installation requirements of the heliostat mirror, reducing and eliminating the small errors during the assembly of the truss 13 and the hollow beam 12, improving the installation and matching accuracy among the hollow beam 12, the truss 13, and the heliostat mirror, and preventing the problem that the installation of the heliostat mirror is offset due to the assembly errors of the hollow beam 12 and the truss 13, which affects the sunlight reflection accuracy of the heliostat mirror.

[0023] Embodiment 2: Please refer to Figure 4 , Figure 5 , Figures 7-10 , Figure 14 , the present invention provides a technical solution: a main beam of a medium and large-sized heliostat. The present invention makes corresponding improvements to the technical problems mentioned in the background art. The adjusting mechanism 2 further includes an adjusting and limiting unit 22, and the adjusting and limiting unit 22 is arranged inside the position fine-adjusting unit 21. The adjusting and limiting unit 22 is used to prevent the elevation angle of the truss 13 from loosening after adjustment.

[0024] As a further limitation of the adjustment mechanism 2 of the present invention, the adjustment and 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 fixed frame 2104. Each support seat 2201 is rotatably connected to the connecting rod 2110. A positioning gear 2202 is fixedly connected to the outer surface of each connecting rod 2110. Two compression springs 2203 are fixedly connected to the inner wall of each support seat 2201. 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. The inner wall of each clamping sleeve 2204 is engaged with the outer surface of the positioning gear 2202. A set of return springs 2205 is fixedly connected to the inner bottom wall of each support seat 2201. The number of each set of return springs 2205 is two. The top end of each set of return springs 2205 is fixedly connected to a downward pressure frame 2206. Both side surfaces of each downward pressure frame 2206 are inclined surfaces. The inclined surface of each downward pressure frame 2206 is in contact with the inclined surface of the clamping sleeve 2204. A rotating bearing 2207 is sleeved on the outer surface of each downward pressure frame 2206. The bottom surface of the inner ring of each rotating bearing 2207 is fixedly connected to the upper surface of the downward pressure frame 2206. A lower pressure plate 2208 is fixedly connected to the outer surface of each rotating bearing 2207. A limit seat 2209 is fixedly connected to the outer surface of each connecting rod 2110. A handle frame 2210 is rotatably hinged to the inner wall of each limit seat 2209. A clamping groove 2211 is formed at the top end of each connecting rod 2110. Each handle frame 2210 is clamped inside the clamping groove 2211. A pushing frame 2212 is fixedly connected to the upper surface of each handle frame 2210. The bottom surface of each pushing frame 2212 is an arc surface. A limit groove 2213 and an auxiliary groove 2214 are formed inside each connecting ring 2102. Two arc-shaped plates 2215 are slidably connected inside each limit groove 2213. One side surface of each arc-shaped plate 2215 is an inclined surface. A fixing block 2216 is fixedly connected to the inner wall of each arc-shaped plate 2215. An adjusting screw 2217 is threadedly connected inside each fixing block 2216. Each adjusting screw 2217 is rotatably connected inside the fixed sleeve 2101. Each adjusting screw 2217 is arranged inside the auxiliary groove 2214. By providing the adjustment and limit unit 22, it can facilitate the staff to smoothly adjust the elevation angle of the truss 13, and at the same time, it can automatically lock or release the limit on the connecting rod 2110, thereby preventing the elevation angle of the truss 13 from loosening after adjustment. At the same time, the movement of the two arc-shaped plates 2215 can also ensure the support and fixing effect of the truss 13, playing a role in ensuring the stability and load-bearing capacity of the truss 13 after the elevation angle is adjusted; Inside each compression spring 2203, a first telescopic rod 2218 is provided. The telescopic end of each first telescopic rod 2218 is fixedly connected to one side surface 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 seat 2201. The first telescopic rod 2218 can prevent the compression spring 2203 from shifting, ensuring the accuracy when the clamping sleeve 2204 is combined. At the same time, it also improves the meshing tightness between the clamping sleeve 2204 and the positioning gear 2202; Inside each return spring 2205, a second telescopic rod 2219 is provided. The telescopic end of each second telescopic rod 2219 is fixedly connected to the bottom surface of the lower pressing frame 2206, and the bottom end of each second telescopic rod 2219 is fixedly connected to the inner bottom wall of the support seat 2201. The second telescopic rod 2219 can increase the telescopic stability of the return spring 2205, ensuring that the lower pressing frame 2206 is more accurate and reliable when resetting; Two positioning rods 2220 are fixedly connected to the outer surface of each arc-shaped plate 2215. Each positioning rod 2220 is slidably connected inside the fixed sleeve 2101. The sliding of the positioning rod 2220 inside the fixed sleeve 2101 can increase the movement stability of the arc-shaped plate 2215 while improving the pressure-bearing capacity of the arc-shaped plate 2215, further enhancing the reliability of use of the arc-shaped plate 2215.

[0025] 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, utilize the hinge relationship between the limit seat 2209 and the handle frame 2210, and manually press down the handle frame 2210 until the handle frame 2210 snaps into the clamping 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, by using the inclined surfaces of the lower pressing frame 2206 and the clamping sleeve 2204, it can force the two clamping sleeves 2204 to move away from each other and release the meshing relationship with the positioning gear 2202. At the same time, let the compression spring 2203 contract under the limit of the first telescopic rod 2218. At this time, through the clamping of the handle frame 2210 and the clamping groove 2211, the connecting rod 2110 can be rotated through the handle frame 2210 to ensure the normal progress of the truss 13 elevation angle adjustment work. At the same time, the rotation bearing 2207 can prevent the arc surface of the pushing frame 2212 from directly rubbing against the lower pressing plate 2208, and make the lower pressing plate 2208 rotate with the rotation of the pushing frame 2212, further ensuring the smooth rotation of the connecting rod 2110. When the truss 13 elevation angle adjustment is completed, just release the handle frame 2210 and utilize the elastic force provided by the return spring 2205 to push the lower pressing frame 2206 upward to reset. Then, the compression spring 2203 will also push the two clamping sleeves 2204 to merge again and make the clamping sleeve 2204 re-engage with the positioning gear 2202 to limit the position of the connecting rod 2110 after rotation, realizing automatic locking or releasing the limit on the connecting rod 2110, preventing the truss 13 elevation angle from loosening after adjustment, and ensuring the stability of the truss 13 elevation angle after fine adjustment. When the truss 13 elevation angle fine adjustment is completed, manually rotating the adjusting screw 2217 can drive the arc-shaped plate 2215 to slide with the assistance of the positioning rod 2220 through the fixed block 2216 until the inclined surfaces of the two arc-shaped plates 2215 slide in the limit groove 2213 until they both contact the inner wall of the limit groove 2213. Since the adjusting screw 2217 is rotatably connected inside the fixed sleeve 2101 and the positioning rod 2220 is also slidably connected inside the fixed sleeve 2101, the position of the connecting ring 2102 in the fixed sleeve 2101 after fine adjustment can be further restricted, and to a certain extent, the limiting pressure of the worm 2105 on the connecting ring 2102 through the worm gear groove 2103 can be shared, thereby ensuring the stability of the truss 13 elevation angle after adjustment and the bearing capacity for the heliostat mirror lens.

[0026] Embodiment 3: Please refer to Figure 6 、 Figures 11-13, the present invention provides a technical solution: a main beam of a medium and large-sized heliostat. The present invention makes corresponding improvements to the technical problems mentioned in the background art. A positioning mechanism 3 is arranged inside the position fine-tuning unit 21. The positioning mechanism 3 is used in cooperation with the adjusting mechanism 2. The positioning mechanism 3 is used to position the position of the truss 13 after sliding adjustment on the hollow beam 12.

[0027] 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 walls of the hollow beams 12. Fixed discs 302 are fixedly connected to the outer surfaces of the two hollow screws 2113. Auxiliary plates 303 are fixedly connected to one side surface of the two fixed discs 302. Guide rods 304 are slidably connected inside the two auxiliary plates 303. Jack holes 305 are formed on the outer surfaces of the two hollow screws 2113. Connecting springs 306 are sleeved on the outer surfaces of the two guide rods 304. One ends of the two connecting springs 306 are fixedly connected to the upper surfaces of the auxiliary plates 303. The other ends of the two connecting springs 306 are fixedly connected to clamping blocks 307. The tops of the two guide rods 304 are fixedly connected to the bottom surfaces of the two clamping blocks 307 respectively. The upper surfaces of the two clamping blocks 307 are meshed and connected to the inner walls of the two toothed discs 301 respectively. Handles 308 are fixedly connected to one side surface of the two clamping blocks 307. Tooth sleeves 309 are fixedly connected to the mutually remote ends of the two hollow beams 12. Auxiliary bearings 310 are fixedly connected to the outer surfaces of the two tooth sleeves 309. Rotating cylinders 311 are fixedly connected to the outer surfaces of the two auxiliary bearings 310. Slide bars 312 are slidably connected inside the two rotating cylinders 311. The two slide bars 312 are respectively slidably connected inside the two rotating screws 2114. Grips 313 are fixedly connected to the tops of the two slide bars 312. Limiting springs 314 are sleeved on the outer surfaces of the two slide bars 312. One ends of the two limiting springs 314 are fixedly connected to the bottom surfaces of the two grips 313 respectively. The other ends of the two limiting springs 314 are fixedly connected to the outer surfaces of the two rotating cylinders 311 respectively. Tooth groove seats 315 are fixedly connected to the outer surfaces of the two slide bars 312. The upper surfaces of the two tooth groove seats 315 are meshed and connected to the inner walls of the two tooth sleeves 309 respectively. By setting the positioning mechanism 3, it is possible to position the positions of the hollow screw 2113 and the rotating screw 2114 after rotation 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 being finely adjusted in distance on the hollow beam 12 as required, ensuring the use stability of the trusses 13 after the position adjustment; On one side of each of the two fixed disks 302, two sliding grooves 316 are provided. On the bottom surface of each of the two clamping blocks 307, two sliders 317 are fixedly connected. Each slider 317 is slidably connected inside the sliding groove 316. By moving the slider 317 inside the sliding groove 316, not only can the distance when the clamping block 307 moves downward be restricted, but also the fitting tightness between the clamping block 307 and the fixed disk 302 can be increased, making the movement of the clamping block 307 more stable and reliable.

[0028] The specific implementation manner 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 disengages from the tooth disk 301, the connecting spring 306 contracts, and at the same time, the guide rod 304 passes through the auxiliary plate 303 and is inserted into the jack 305. At this time, the hollow screw 2113 can be rotated through the handle 308 in cooperation with the guide rod 304, the jack 305, the auxiliary plate 303, and the fixed disk 302. When the hollow screw 2113 rotates, it can cooperate with the outer sliding frame 2112 to drive the truss 13 outside the hollow beam 12 to perform fine distance adjustment. After the fine distance adjustment of the outer truss 13 is completed, 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 tooth disk 301. When it is necessary to rotate the rotating screw 2114 to perform fine position adjustment on the truss 13 inside the hollow beam 12, first manually press down the grip 313, forcing the limiting spring 314 to contract. At the same time, the tooth groove seat 315 also disengages from the tooth sleeve 309. At this time, the rotating cylinder 311 can be rotated through the grip 313 in cooperation with the sliding strip 312 and the auxiliary bearing 310. Since the sliding strip 312 is slidably connected inside the rotating screw 2114, when the rotating cylinder 311 rotates, it will also drive the rotating screw 2114 to rotate through the sliding strip 312. When the rotating screw 2114 rotates, it can cooperate with the inner sliding frame 2112 to drive the inner truss 13 to perform position fine adjustment. After the position fine adjustment of the inner truss 13 is completed, just release the grip 313. The elastic force provided by the limiting spring 314 can push the grip 313 to move upward and reset, and make the tooth groove seat 315 re-engage with the tooth sleeve 309. By using the engagement between the tooth groove seat 315 and the tooth sleeve 309, the rotation of the rotating cylinder 311 and the rotating screw 2114 can be prevented, so that 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 positions of the trusses 13 after the distance adjustment can be positioned, so that the trusses 13 are not prone to loosening after fine distance adjustment on the hollow beam 12 as required, ensuring the use stability of the trusses 13 after the position adjustment.

[0029] It should be noted that in this text, relational terms such as first and second are only used 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 term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A main beam of a medium and large-sized heliostat, comprising a support mechanism (1), characterized in that: The support mechanism (1) includes a mounting base (11), both ends of the mounting base (11) are fixedly connected with hollow beams (12), two trusses (13) are arranged outside each of the two hollow beams (12), a connecting frame (14) is fixedly connected to the outer surface of each truss (13), and an adjusting mechanism (2) is jointly arranged inside the two hollow beams (12); The adjusting 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) can finely adjust 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 adjusting mechanism (2) further includes an adjusting limit unit (22), the adjusting limit unit (22) is arranged inside the position fine-tuning unit (21), and the adjusting limit unit (22) is used to prevent the truss (13) from loosening after the elevation angle is adjusted; A positioning mechanism (3) is arranged inside the position fine-tuning unit (21), the positioning mechanism (3) is used in cooperation with the adjusting mechanism (2), and the positioning mechanism (3) is used to position the position of the truss (13) after sliding adjustment on the hollow beam (12).

2. The main beam of a medium and large-sized heliostat according to claim 1, characterized in that: The position fine-tuning unit (21) includes a number of fixed sleeves (2101). The inner wall of each fixed sleeve (2101) is in contact with the outer surface of the hollow beam (12). A connecting ring (2102) is slidably connected to the surface of each fixed sleeve (2101). The outer surface of each connecting ring (2102) is fixedly connected to the connecting frame (14). A worm gear groove (2103) is formed on the outer surface of each connecting ring (2102). A fixed frame (2104) is fixedly connected to the outer surface of each fixed sleeve (2101). A worm (2105) is rotatably connected inside each fixed frame (2104). Each worm (2105) is meshed with the worm gear groove (2103). A first large gear (2106) is fixedly connected to the outer surface of each worm (2105). A rotating rod (2107) is rotatably connected inside each fixed frame (2104). A first small gear (2108) is fixedly connected to the outer surface of each rotating rod (2107). The outer surface of each first small gear (2108) is meshed with the outer surface of the first large gear (2106). A second large gear (2109) is fixedly connected to the outer surface of each rotating rod (2107). A connecting rod (2110) is rotatably connected inside each fixed frame (2104). A second small gear (2111) is fixedly connected to the outer surface of each connecting rod (2110). The outer surface of each second small gear (2111) is meshed with the outer surface of the second large gear (2109). A sliding frame (2112) is fixedly connected to the inner wall of each fixed sleeve (2101). Each sliding frame (2112) is slidably connected inside the hollow beam (12). A hollow screw (2113) is arranged inside each of the two hollow beams (12). The outer surface of each of the two hollow screws (2113) is threadedly connected to the inner wall of the sliding frame (2112) on the outside of each of the two hollow beams (12). A rotating screw (2114) is slidably connected inside each of the two hollow screws (2113). The outer surface of each of the two rotating screws (2114) is threadedly connected to the inner wall of the sliding frame (2112) on the inside of each of the two hollow beams (12).

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

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

5. A main beam of a medium and large-sized heliostat according to claim 2, characterized in that: The adjustment and limit unit (22) includes a number of support seats (2201). The bottom surface of each support seat (2201) is fixedly connected to the upper surface of the fixed frame (2104). Each support seat (2201) is rotatably connected to the connecting rod (2110). A positioning gear (2202) is fixedly connected to the outer surface of each connecting rod (2110). Two compression springs (2203) are fixedly connected to the inner wall of each support seat (2201). 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. The inner wall of each clamping sleeve (2204) meshes with the outer surface of the positioning gear (2202). A set of return springs (2205) is fixedly connected to the inner bottom wall of each support seat (2201). The number of each set of return springs (2205) is two. The top of each set of return springs (2205) is fixedly connected to a pressing frame (2206). Both side surfaces of each pressing frame (2206) are inclined surfaces. The inclined surface of each pressing frame (2206) contacts the inclined surface of the clamping sleeve (2204). A rotating bearing (2207) is sleeved on the outer surface of each pressing frame (2206). The bottom surface of the inner ring of each rotating bearing (2207) is fixedly connected to the upper surface of the pressing frame (2206). A lower pressing plate (2208) is fixedly connected to the outer surface of each rotating bearing (2207). A limit seat (2209) is fixedly connected to the outer surface of each connecting rod (2110). A handle frame (2210) is rotatably hinged to the inner wall of each limit seat (2209). A clamping groove (2211) is formed at the top of each connecting rod (2110). Each handle frame (2210) is clamped inside the clamping groove (2211). A pushing frame (2212) is fixedly connected to the upper surface of each handle frame (2210). The bottom surface of each pushing frame (2212) is an arc surface. A limit groove (2213) and an auxiliary groove (2214) are formed inside each connecting ring (2102). Two arc-shaped plates (2215) are slidably connected to the inside of each limit groove (2213). One side surface of each arc-shaped plate (2215) is an inclined surface. A fixing block (2216) is fixedly connected to the inner wall of each arc-shaped plate (2215). An adjusting screw (2217) is threadedly connected to the inside of each fixing block (2216). Each adjusting screw (2217) is rotatably connected to the inside of the fixed sleeve (2101). Each adjusting screw (2217) is arranged inside the auxiliary groove (2214).

6. The main beam of a medium and large-sized heliostat according to claim 5, characterized in that: Inside each of the compression springs (2203), a first telescopic rod (2218) is provided. The telescopic end of each first telescopic rod (2218) is fixedly connected to one side surface 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).

7. A main beam of a medium and large-sized heliostat according to claim 5, characterized in that: Inside each of the return springs (2205), a second telescopic rod (2219) is provided. The telescopic end of each second telescopic rod (2219) is fixedly connected to the bottom surface of the pressing 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).

8. A main beam of a medium and large-sized heliostat according to claim 5, characterized in that: Two positioning rods (2220) are fixedly connected to the outer surface of each of the arc-shaped plates (2215), and each of the positioning rods (2220) is slidably connected inside the fixed sleeve (2101).

9. A main beam of a medium and large-sized heliostat according to claim 2, characterized in that: 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). Fixed discs (302) are fixedly connected to the outer surfaces of the two hollow screws (2113). Auxiliary plates (303) are fixedly connected to one side surface of the two fixed discs (302). Guide rods (304) are slidably connected inside the two auxiliary plates (303). Jacks (305) are formed on the outer surfaces of the two hollow screws (2113). Connecting springs (306) are sleeved on the outer surfaces of the two guide rods (304). One end of each of the two connecting springs (306) is fixedly connected to the upper surface of the auxiliary plate (303). The other end of each of the two connecting springs (306) is fixedly connected to a clamping block (307). The tops of the two guide rods (304) are fixedly connected to the bottom surfaces of the two clamping blocks (307) respectively. The upper surfaces of the two clamping blocks (307) are meshed and connected to the inner walls of the two toothed discs (301) respectively. Handles (308) are fixedly connected to one side surface of the two clamping blocks (307). Tooth sleeves (309) are fixedly connected to the mutually remote ends of the two hollow beams (12). Auxiliary bearings (310) are fixedly connected to the outer surfaces of the two tooth sleeves (309). Rotating cylinders (311) are fixedly connected to the outer surfaces of the two auxiliary bearings (310). Slide bars (312) are slidably connected inside the two rotating cylinders (311). The two slide bars (312) are respectively slidably connected inside the two rotating screws (2114). Grips (313) are fixedly connected to the tops of the two slide bars (312). Limiting springs (314) are sleeved on the outer surfaces of the two slide bars (312). One end of each of the two limiting springs (314) is fixedly connected to the bottom surface of the corresponding grip (313). The other end of each of the two limiting springs (314) is fixedly connected to the outer surface of the corresponding rotating cylinder (311). Tooth groove seats (315) are fixedly connected to the outer surfaces of the two slide bars (312). The upper surfaces of the two tooth groove seats (315) are meshed and connected to the inner walls of the two tooth sleeves (309) respectively.

10. A main beam of a medium and large-sized heliostat according to claim 9, characterized in that: Two sliding grooves (316) are formed on one side surface of the two fixed discs (302). Two sliders (317) are fixedly connected to the bottom surfaces of the two clamping blocks (307). Each slider (317) is slidably connected inside the sliding groove (316).

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