Heliostat connecting assembly

Abstract

The utility model discloses a heliostat connecting assembly which comprises an L-shaped supporting flange, a rotating shaft and a connecting seat, a mounting hole is formed in the top of the L-shaped supporting flange, the mounting hole corresponds to the pitch axis of a heliostat, a base is arranged at the bottom of the L-shaped supporting flange, the base corresponds to the azimuth axis of the heliostat, and the rotating shaft is arranged on the L-shaped supporting flange. The azimuth axis and the pitch axis are perpendicular to each other but not intersected, and a transition connecting part between the mounting hole and the base is of a cambered surface structure; a mounting hole is formed in the middle of the rotating shaft, the rotating shaft is mounted in the rotating shaft mounting hole, a sliding bearing is arranged between the rotating shaft and the rotating shaft mounting hole, and an O-shaped ring groove is formed in the middle of the rotating shaft corresponding to the sliding bearing; an oil seal and a connecting seat are arranged at two ends of the rotating shaft. The connecting assembly is simple in structure, the overall transmission efficiency is remarkably improved, the service life is remarkably prolonged, and the connecting assembly is high in reliability.

Description

TECHNICAL FIELD

[0001] The utility model relates to solar power generation technical field especially a heliostat connecting assembly. BACKGROUND

[0002] Tower type solar power generation is a kind of concentrated solar power generation technology, and solar light is reflected and focused to the heat absorber on the top of central heat absorption tower by a large number of heliostats, and solar energy is converted into heat energy, and then power generation is carried out through heat cycle. Because it has energy storage characteristics, it can generate day and night, and has little impact on power grid, so it is applied more and more. In order to realize that heliostats can reflect solar light to the heat absorber at different places and different time, the reflecting surface of heliostat should have posture adjustment capability, which is usually divided into azimuth angle rotation in horizontal plane and pitch angle rotation in vertical plane.

[0003] The reflector (reflecting surface and support bracket) of heliostat is connected with azimuth angle driving device (usually motor and rotary speed reducer assembly) and pitch angle driving device (usually electric push rod) through connecting assembly, the azimuth angle adjustment of heliostat is realized by rotary speed reducer driving connecting assembly, and the pitch angle adjustment of heliostat is realized by push rod driving reflector rotating around the rotating shaft of connecting assembly.

[0004] Heliostat is mainly applied to outdoor scene in desert and other light resource rich areas, and wind sand dust, condensation frost phenomenon is more common, and the wind load in all directions under windy weather and the weight of heliostat reflector will be borne by connecting assembly, so how to ensure the reliability of connecting assembly and improve the service life and transmission efficiency of connecting assembly is a problem to be solved urgently. SUMMARY

[0005] In order to overcome the above problems existing in the prior art, the utility model provides a heliostat connecting assembly.

[0006] The utility model discloses the technical scheme that solves its technical problem is as follows: a heliostat connecting assembly, including L type support flange, rotating shaft, connecting seat, the top of L type support flange is provided with mounting hole, the mounting hole corresponds the pitch axis of heliostat, the bottom of L type support flange is provided with base, the base corresponds the azimuth axis of heliostat, the azimuth axis and pitch axis are perpendicular to each other but do not intersect, the transition connecting portion between mounting hole and base is set to arc surface structure;

[0007] The middle position of mounting hole is mounting hole, the rotating shaft is installed at rotating shaft mounting hole, and sliding bearing is arranged between the rotating shaft and the rotating shaft mounting hole, and the middle part of the rotating shaft corresponding to the sliding bearing is provided with O-ring groove;

[0008] The both ends of the rotating shaft are provided with oil seal and connecting seat.

[0009] The base is a cylindrical stepped structure, one side of the base is provided with a connecting hole, and the center axis of the connecting hole is parallel to the axis of the rotating shaft.

[0010] The arc surface structure is provided with longitudinal reinforcing ribs, and the arc surface structure is provided with cable routing hole positions.

[0011] The rotating shaft is provided with rotating shaft threaded holes at both ends, the connecting seat is connected with the rotating shaft through bolts, and the connecting seat is provided with lock washers at the connecting position of the rotating shaft.

[0012] The rotating shaft is further provided with oil grooves at both ends, and the sliding bearing is provided with bearing machining through holes.

[0013] The mounting hole is provided with oil seal mounting holes and oil cup mounting threaded holes at both ends, the oil seal mounting holes are used for mounting oil seals, and the oil cup mounting threaded holes are aligned with the bearing machining through holes and the oil grooves.

[0014] The L-shaped support flange is integrally formed.

[0015] The L-shaped support flange is integrally formed.

[0016] The rotating shaft mounting position is an independent closed cavity, the sliding bearing and the oil seal mounting hole in the cavity are machined, the sliding bearing is press-fitted, the O-ring and the oil seal component mounted on the rotating shaft are matched, the rotating shaft and the sliding bearing working surface form a closed lubrication space, external water vapor and dust are prevented from entering the rotating shaft to cause rotating shaft wear, and the overall transmission efficiency and service life are improved.

[0017] The L-shaped support flange reserves cable routing hole positions, facilitates electric push rod cable wiring, and meets the push rod telescopic cable length requirement.

[0018] The rotating shaft and the connecting seat adopt a split design, assembly adopts bolt connection, facilitates the alignment of the connecting assembly and the hole position of the reflector support seat when the connecting assembly is connected with the reflector, and the split rotating shaft and the connecting seat reduce the machining difficulty.

[0019] The wear-resistant sliding bearing reduces the wear of the support flange shaft hole, and the bearing can be individually disassembled and replaced when worn.

[0020] The connecting assembly is provided with an oil cup, so that the lubricating oil can be added during use, the lubricating condition of the rotating shaft is improved, the transmission efficiency is improved, and the abrasion is reduced.

[0021] The support flange is subjected to electrophoresis and paint spraying treatment (or overall hot dip galvanizing), and the rotating shaft and the connecting seat are subjected to electroplating zinc treatment, so that the overall corrosion resistance of the parts is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the utility model;

[0023] Figure 2 is an axonometric view of the utility model;

[0024] Figure 3 is an elevational view of the utility model;

[0025] Figure 4 is the utility model Figure 3 is a sectional view in the A-A direction of the utility model;

[0026] Figure 5 is a plan view of the utility model;

[0027] Figure 6 is a schematic view of the sliding bearing of the utility model;

[0028] Figure 7 is a schematic view of the rotating shaft of the utility model;

[0029] Figure 8 is a schematic view of the utility model applied to a heliostat connection;

[0030] Figure 9 is a schematic view of the utility model connected with a reflector.

[0031] 1, reflector, 2, connecting assembly, 3, electric push rod, 4, slewing reducer assembly, 5, stand;

[0032] Support bracket, 1.2, reflecting surface; 1.1.1, reflector support seat, 1.1.2, second fixing bolt, 1.1.3, bracket, 1.1.4, third fixing bolt;

[0033] 2.1, L-shaped support flange, 2.2, rotating shaft, 2.3, connecting seat, 2.4, sliding bearing, 2.5, O-ring, 2.6, oil seal, 2.7, oil cup, 2.8, first fixing bolt, 2.9, lock washer;

[0034] 2.1.1, hinge hole, 2.1.2, pivot mounting hole, 2.1.3, bearing mounting hole, 2.1.4, oil seal mounting hole, 2.1.5, base, 2.1.6, side oval hole, 2.1.7, front fillet rectangle, 2.1.8, hole, 2.1.9, bottom flange, 2.1.10, longitudinal stiffener, 2.1.11, azimuth axis, 2.1.12, pitch axis, 2.1.13, camber structure, 2.1.14, oil cup threaded hole, 2.1.15, hole center axis;

[0035] 2.2.1, oil groove, 2.2.2, O-ring groove, 2.2.3, bolt hole, 2.2.4, working support surface;

[0036] 2.3.1, connecting seat threaded hole, 2.3.2, boss;

[0037] 2.4.1, bearing machining through hole. DETAILED DESCRIPTION

[0038] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the utility model is described in detail below in combination with the drawings and specific embodiments.

[0039] As shown in Figures 1-5 , the embodiment discloses a heliostat connecting assembly, which comprises an L-shaped support flange 2.1, a pivot 2.2, a connecting seat 2.3 and a sliding bearing 2.4, and comprises an L-shaped support flange, a pivot and a connecting seat, the top of the L-shaped support flange is provided with a mounting hole, the mounting hole corresponds to the pitch axis of the heliostat, the bottom of the L-shaped support flange is provided with a base, the base corresponds to the azimuth axis of the heliostat, the azimuth axis and the pitch axis are perpendicular to each other but do not intersect, and the transition connection part between the mounting hole and the base is provided with a camber structure; the middle position of the mounting hole is a mounting hole, the pivot is mounted at the pivot mounting hole, the sliding bearing is arranged between the pivot and the pivot mounting hole, and the O-ring groove is arranged in the middle part of the pivot corresponding to the sliding bearing; the two ends of the pivot are provided with an oil seal and a connecting seat.

[0040] The main features of each component are as follows.

[0041] (1) L-shaped support flange (as shown in Figures 1-5 ):

[0042] The whole is similar to L-shaped, wherein the top is a mounting hole, corresponding to the pitch axis 2.1.12 of the heliostat, the middle position is a pivot mounting hole 2.1.2, and the two sides are provided with a bearing mounting hole 2.1.3, an oil seal mounting hole 2.1.4 and an oil cup threaded hole 2.1.14;

[0043] The bottom is provided with a base, the base 2.1.5 is a cylindrical stepped structure, can withstand torque or load in all directions, has high rigidity, and is provided with a hinge hole position 2.1.1 matched with the end shaft hole 3.2 of the push rod, the hole center axis 2.1.15 is parallel to the rotation shaft axis 2.1.12;

[0044] The bottom flange 2.1.9 of the base is connected with the rotary reducer 4, and corresponds to the azimuth axis 2.1.11 of the heliostat. The azimuth axis 2.1.11 is perpendicular to the elevation axis 2.1.12 but does not intersect, and the purpose of this arrangement is to make the centroid of the reflector coincide with the elevation axis, thereby reducing the load of the electric push rod.

[0045] The transition connection part between the base 2.1.5 and the mounting hole is provided with a cambered surface structure 2.1.13, which satisfies the torque pipe avoidance while improving the bending and torsional resistance of the support flange. Two longitudinal reinforcing ribs 2.1.10 are arranged in the overall support part, which improves the connection strength and rigidity of the upper mounting hole and the base 2.1.5.

[0046] The cambered surface structure 2.1.13 reserves the electric push rod cable routing hole position (side oval hole 2.1.6) and (front round rectangular 2.1.7); with the extension and contraction of the electric push rod, the power supply and communication cables need to reserve a certain length, in order to avoid the cable sagging and interfering with the movement of other parts, the cable is wound around the torque tube, passes through the front round rectangular 2.1.7 and the hole side oval hole 2.1.6, and is connected with the electric control box.

[0047] The thickness of each structure of the L-shaped support flange is uniform and basically consistent, the connection is round and transition, and the integral casting is adopted, which can avoid casting defects caused by internal stress concentration and has high yield.

[0048] (2) Sliding bearing (as shown in Figure 6

[0049] The sliding bearing is a metal plastic polymer self-lubricating bearing, and the inner surface of the bearing is covered with low-friction material as the bearing working layer, so that even if the lubricating oil is reduced, dry friction work can be performed. The sliding bearing is provided with a bearing machining hole 2.4.1 aligned with the oil cup threaded hole 2.1.14, so that the lubricating oil can reach the shaft oil groove; in addition, when the bearing wear reduces the transmission efficiency to an unacceptable level, the hole 2.4.1 can be clamped by a tool to disassemble and replace.

[0050] (3) Rotation shaft (as shown in Figure 7

[0051] ​​The center of the rotating shaft is symmetrical, and the two end faces are provided with bolt holes 2.2.3 connected with the connecting seat, O-ring grooves 2.2.2, working support surfaces 2.2.4 matched with the sliding bearing, and oil grooves 2.2.1. The oil seal mounting hole is used for mounting the oil seal, and the oil cup mounting threaded hole is aligned with the bearing machining through hole and the oil groove.

[0052] (4) Connecting seat (as shown in Figure 1 ):

[0053] One end of the connecting seat is provided with circumferentially uniformly distributed connecting seat threaded holes 2.3.1 (the number of connecting seat threaded holes 2.3.1 is not less than 3, and 6 are shown in the embodiment) connected with the reflector support seat 1.1.1, the connecting seat is connected with the rotating shaft threaded hole 2.2.3 through the first fixing bolt 2.8, and the other end boss 2.3.2 is matched with the L-shaped support flange to limit the axial displacement of the rotating shaft.

[0054] In view of the fact that the heliostat is mainly used in the outdoor scene of the desert and other places with rich light resources, the wind sand dust, condensation and frosting phenomenon is more common, in order to improve the corrosion resistance of the connecting assembly, the L-shaped support flange body is subjected to electrophoresis and paint spraying treatment (or overall hot dip galvanizing), and the rotating shaft and the connecting seat are subjected to zinc electroplating treatment.

[0055] The assembly sequence and connection relationship of each part are as follows:

[0056] 1), the sliding bearing 2.4 is press-fitted in the bearing mounting hole 2.1.3, and the bearing machining through hole 2.4.1 is aligned with the oil cup threaded hole 2.1.14 during assembly;

[0057] 2), the O-ring 2.5 is placed in the O-ring groove 2.2.2;

[0058] 3), the rotating shaft with the O-ring installed is inserted from one end of the mounting hole to be basically centered;

[0059] 4), the oil seal 2.6 is pressed into the oil seal mounting hole 2.1.4 from both ends respectively;

[0060] 5), the oil cup 2.7 is inserted into the oil cup threaded hole 2.1.14. An appropriate amount of lubricating grease is injected through the oil cup, and the lubricating grease is evenly distributed in the sliding bearing working surface by rotating the rotating shaft 2.2 for several turns.

[0061] 6), the connecting seat 2.3 is sleeved on the rotating shaft 2.2 from both ends respectively, and the lock washer 2.9 and the first fixing bolt 2.8 are placed, and the rotating shaft threaded hole 2.2.3 is preliminarily tightened, at this time, the two connecting seats can still be relatively rotated in a small range.

[0062] As shown in Figure 9 , the connecting steps of the connecting assembly and the reflector in the embodiment are as follows:

[0063] 1) Due to the large volume and weight of the reflector, it should be fixed by a tool before assembly; the tool supporting the connecting assembly has the ability of rotation and translation.

[0064] 2) Adjust the position of the connecting assembly, align the threaded hole 2.3.1 of the connecting seat at one end with the hole position of the corresponding reflector support seat 1.1.1, pass through the second fixing bolt 1.1.2 and tighten;

[0065] 3) Slightly rotate the connecting seat 2.3 at the other end, align it with the hole position of the reflector support seat 1.1.1 on the other side, pass through the second fixing bolt 1.1.2 and tighten;

[0066] 4) Finally, tighten the first fixing bolt 2.8.

[0067] The function of the connecting assembly and the positional relationship in the heliostat are shown in Figure 8 The reflector 1 (composed of the support bracket 1.1 and the reflecting surface 1.2) of the heliostat is connected to the azimuth angle driving device (usually a rotary reducer assembly 4) and the elevation angle driving device (usually an electric push rod 3) through the connecting assembly 2. Specifically, as shown in Figure 9 The reflector support seat 1.1.1 is connected to the connecting seat 2.3 of the connecting assembly 2 through the second fixing bolt 1.1.2, and the hole position 2.1.8 of the base is connected to the rotary reducer 4 through a bolt. The rotary reducer assembly 4 drives the connecting assembly 2 to rotate horizontally around the column 5 to realize the azimuth angle adjustment of the heliostat. The reflector support seat 1.1.1 is connected to the trunnion 3.1 of the electric push rod 3 through the bracket 1.1.3, and the end shaft hole 3.2 of the electric push rod is connected to the hinged hole position 2.1.1 through the third fixing bolt 1.1.4. The extension of the electric push rod drives the reflector to rotate vertically around the rotation shaft of the support flange assembly to realize the elevation angle adjustment of the heliostat.

[0068] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements should also be considered to fall within the protection scope of the present application.

Claims

1. A heliostat connection assembly, characterized by, Including L type support flange, pivot, connecting seat, the L type support flanchise top is provided with mounting hole, the mounting hole corresponds the elevation axis of heliostat, the L type support flanchise bottom is provided with base, the base corresponds the azimuth axis of heliostat, the azimuth axis and elevation axis are perpendicular to each other but not intersect, the transition connecting portion between mounting hole and base is set as cambered surface structure; The middle position of the mounting hole is the pivot mounting hole, the pivot is installed at the pivot mounting hole, the sliding bearing is arranged between the pivot and the pivot mounting hole, and the O-ring groove is arranged in the middle part of the pivot corresponding to the sliding bearing; The both ends of the pivot are provided with oil seal and connecting seat.

2. A heliostat connection assembly according to claim 1, wherein, The base is a cylindrical step structure, one side of the base is provided with a connecting hole, and the center axis of the connecting hole is parallel to the axis of the pivot.

3. A heliostat connection assembly according to claim 1, wherein, The cambered surface structure is provided with a longitudinal reinforcing rib, and the cambered surface structure is provided with a cable routing hole.

4. A heliostat connection assembly according to claim 1, wherein, The both ends of the pivot are provided with pivot threaded holes, the connecting seat is connected with the pivot through bolts, and the connecting seat is provided with a lock washer at the connecting position of the pivot.

5. A heliostat connection assembly according to claim 1, wherein, The both ends of the pivot are also provided with oil grooves, and the sliding bearing is provided with a bearing machining through hole.

6. A heliostat connection assembly according to claim 5, wherein, The both ends of the mounting hole are provided with oil seal mounting hole and oil cup mounting threaded hole, the oil seal mounting hole is used for mounting oil seal, and the oil cup mounting threaded hole is aligned with the bearing machining through hole and the oil groove.

7. A heliostat connection assembly according to claim 1, wherein, The L type support flange is integrally formed.

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