A traction-type adjustable photovoltaic bracket with a reflector

Abstract

The present invention relates to a traction-type adjustable photovoltaic support with reflectors. The upper long sides of the photovoltaic module array and reflector array are hinged on a rotating shaft, the ends of which are fixed to a crossbeam. A slider is mounted on each column. A rocker I is hinged to the lower end of the photovoltaic module array, the other end of which is hinged to the slider. Similarly, a rocker II is hinged to the lower end of the reflector array, the other end of which is also hinged to the slider. The support also includes a movable pulley mounted on the slider. One end of a steel wire rope I is fixed to the crossbeam, and the other end passes through several movable pulleys, then around fixed pulley II, before being connected to a hand crank. Based on a traditional photovoltaic array, reflectors are used to reflect light onto the rear photovoltaic panels, increasing the power generation of the photovoltaic system. A wheel train traction system and a differential sleeve enable stepless and differential adjustment of the inclination angles of the photovoltaic module array and reflector array. This system offers high resource utilization and good terrain adaptability, making it particularly suitable for photovoltaic projects in complex terrain.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation equipment, and in particular to a towing adjustable photovoltaic bracket with a reflector. Background Art

[0002] Due to the low energy density of solar energy, photovoltaic power plants often require very large areas to achieve large-scale energy output. Furthermore, to prevent shading between front and rear photovoltaic arrays when the sun's altitude is low, the arrays must be spaced a certain distance apart. According to relevant regulations and standards, the spacing of photovoltaic arrays should be calculated to ensure six hours of sunlight on the panels on the winter solstice, when the sun's altitude is lowest. This spacing is one of the main reasons for the low land utilization rate of photovoltaic power plants. Furthermore, the land within this spacing is not effectively utilized, further reducing the utilization rate of solar resources. Fixed mounting brackets typically have a certain inclination angle. The optimal installation angle depends on factors such as geographic location, annual solar radiation distribution, the ratio of direct to diffuse radiation, and specific site conditions. However, the distribution of solar radiation varies significantly throughout the year and within the day. In high latitudes, horizontal solar radiation varies significantly between winter and summer, resulting in varying inclination angles across seasons and even months. Clearly, a fixed inclination is not the optimal option; adjusting it based on the month or season is the best approach.

[0003] The Chinese invention patent "Four Seasons Adjustable Angle Photovoltaic Bracket Adjustment Device," publication number CN204733121U, discloses a four-seasons adjustable angle photovoltaic bracket adjustment device. The device uses a screw to rotate a planar four-link to produce horizontal expansion or contraction, which is converted into vertical contraction or expansion of the planar four-link. The angle change is achieved by replacing intermediate variable-length rods of different lengths. However, the core support rods in this solution need to be replaced, requiring a large number of spare parts to be prepared according to different solutions. This solution is not rational and economical, and the angle adjustment during installation and use is relatively cumbersome. The Chinese invention patent "A Solar Tracking Device for Photovoltaic Power Generation," publication number CN106301185B, discloses a solar tracking device for photovoltaic power generation. The device utilizes a pile and sleeve structure. A winch drives a steel wire rope to pull multiple unpowered, passive tracking brackets to rotate and track changes in the solar azimuth angle. A tilt adjustment mechanism can be provided to rotate the photovoltaic panel about a horizontal axis to track changes in the solar altitude angle. A mirror reflector is provided at the lower edge of the photovoltaic panel to enhance the light collection energy of the photovoltaic panel. This solution uses a winch to adjust the photovoltaic array. The system is complex and costly. The reflector installed at the lower edge of the component has no reliable support, and its inclination angle cannot be adjusted, resulting in poor flexibility. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a traction-type adjustable photovoltaic bracket with a simple structure, which can realize stepless adjustment of the inclination angle of the photovoltaic module array and the reflector.

[0005] The specific technical solution of the present invention is: a traction-type adjustable photovoltaic bracket with a reflector, including a photovoltaic component array, and also including a plurality of side-by-side columns, the long sides of the upper ends of the photovoltaic component array and the reflector array are hinged on the rotating shaft, the photovoltaic component array and the reflector array form a symmetrical umbrella shape, the upper ends of the columns are equipped with cross beams, and the two ends of the rotating shaft are fixed on the cross beams; it also includes a slider, each column is equipped with a slider, the slider slides up and down along the column, the lower end surface of the photovoltaic component array is hinged with a rocker I, and the other end of the rocker I is hinged on the slider, and similarly, a rocker II is hinged on the lower end surface of the reflector array, and the other end of the rocker II is also hinged on the slider.

[0006] It also includes a movable pulley installed on the slider. One end of the wire rope I is fixed to the crossbeam, and the other end passes through several movable pulleys in sequence, and then passes through the fixed pulley II and is connected to the hand crank.

[0007] Furthermore, preferably, it also includes a plurality of fixed pulleys I installed on the beam corresponding to the sliders, and after the wire rope II passes around the fixed pulley I, the two ends are respectively connected to the slider and the counterweight.

[0008] Furthermore, preferably, the cross section of the column is circular or square.

[0009] Furthermore, preferably, the slider is provided with an inner sliding hole along the center line, and the slider is sleeved on the column through the inner sliding hole.

[0010] Furthermore, preferably, a pair of supporting ears are symmetrically provided on the outer wall of the slider, and the lower ends of the rocker I and the rocker II are hinged on the supporting ears.

[0011] Furthermore, preferably, the movable pulley is installed directly below the slider support lug via a rotating shaft bolt rod.

[0012] Furthermore, preferably, the rocker arm II includes a right-handed support rod, a left-handed support rod, and a differential sleeve, and both ends of the differential sleeve are internal threads with the same parameters and opposite rotation directions, which are respectively connected to the right-handed support rod and the left-handed support rod with external threads of corresponding rotation directions, and the other ends of the right-handed support rod and the left-handed support rod are respectively hinged to the lower end surface of the reflector array and the slider.

[0013] Furthermore, preferably, more than three columns are set up side by side in the east-west direction, and the specific number can be flexibly configured according to site conditions.

[0014] Furthermore, preferably, a locking device is further included, and locking devices are provided on the upper and lower sides of the slider.

[0015] The beneficial effects of the present invention are: on the basis of the traditional photovoltaic array, reflectors are used to reflect light onto the photovoltaic panels in the rear row, thereby increasing the power generation of the photovoltaic system, and the stepless and differentiated adjustment of the inclination angles of the photovoltaic module array and the reflector array are achieved through the wheel train traction system and the differential sleeve. It has high resource utilization, good terrain adaptability, simplicity and reliability, compact structure, flexible configuration, convenient operation, convenient maintenance, and high cost performance, and is especially suitable for photovoltaic projects in complex terrains. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the adjustable photovoltaic support of the present invention;

[0017] Figure 2 This is a side view of the adjustable photovoltaic support of the present invention, in which components such as the photovoltaic module array, reflector array, and rocker I are not shown;

[0018] Figure 3 This is a three-dimensional schematic diagram of the adjustable photovoltaic brackets of the present invention installed in a row;

[0019] Figure 4 A side view of a slider component in an adjustable photovoltaic support of the present invention, wherein a partial cross-section is performed;

[0020] Figure 5 A top view of a slider component in the adjustable photovoltaic support of the present invention;

[0021] Figure 6 A top view of the locking device in the adjustable photovoltaic support of the present invention;

[0022] Figure 7 This is a partial view of the locking device of the adjustable photovoltaic bracket of the present invention installed on the column.

[0023] Figure 8 This is a front view of another embodiment of the adjustable photovoltaic bracket of the present invention;

[0024] Figure 9 This is a structural schematic diagram of the right-handed support rod and the left-handed support rod in the adjustable photovoltaic bracket of the present invention installed in the differential sleeve, in which the differential sleeve is cross-sectionally viewed, and the difference in thread rotation direction is shown by different lines.

[0025] In the figure above: 100-photovoltaic module array, 101-photovoltaic module, 102-transverse purlin, 103-longitudinal purlin, 2-reflector array, 3-column, 401-rotating shaft, 402-crossbeam, 403-rocker I, 5-slider, 501-rotating shaft bolt rod, 502-inner sliding hole, 503-support ear, 504-hanging ear, 6-wheel traction system, 601-movable pulley, 602-wire rope I, 603-fixed pulley I, 604-wire rope II, 605-counterweight, 606-fixed pulley II, 607-hand crank, 7-rocker II, 701-right-hand support rod, 702-left-hand support rod, 703-differential sleeve, 8-locking device, 9-buttress. DETAILED DESCRIPTION

[0026] In order to make the technical problems and technical solutions solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0029] Example 1:

[0030] like Figure 1 Figure 3As shown, a traction-type adjustable photovoltaic support with reflectors is composed of several transverse purlins 102 and longitudinal purlins 103 connected by corresponding connectors to form a photovoltaic module mounting frame. Photovoltaic modules 101 are bolted to the frame to form a photovoltaic module array 100. This is a prior art installation method. The reflector array 2 is mounted using the same installation method, that is, the reflectors are also bolted to the corresponding frame to form the reflector array 2. The upper long edges of the photovoltaic module array 100 and the reflector array 2 are respectively hinged to a rotating shaft 401. The hinge connection can be a rotating sleeve rotating connection to the rotating shaft 401, or a hinge connection to the rotating shaft 401. The photovoltaic module array 100 and the reflector array 2 can freely rotate up and down around the rotating shaft 401 to a certain angle. The photovoltaic module array 100 and the reflector array 2 are arranged left and right with the column 3 as the center.

[0031] like Figure 3 As shown, a plurality of east-west parallel columns 3 are installed with crossbeams 402, and the columns 3 are preferably cylindrical, with more than three columns. Of course, the number can be flexibly configured according to site conditions to facilitate the installation of the wheel train traction system 6. The lower ends of several columns 3 are fixed on the concrete piers 9, and the tops of several columns 3 are fixedly installed with crossbeams 402. The columns 3 and the crossbeams 402 are fixedly connected to form a plurality of portal frame structures, which play a load-bearing role, have good strength and rigidity, and a simple structure. Both ends of the rotating shaft 401 are fixed on the crossbeams 402; of course, the columns 3 can also be square, but its sliding effect is not as good as the cylindrical tubular one. It is an equivalent technical replacement in this field and is within the technical scope of the present invention.

[0032] A slider 5 is mounted on the column 3. The slider 5 can slide up and down along the column 3. The slider 5 is in the shape of a block or a cylinder as a whole. An inner sliding hole 502 is opened along the axial center line of the slider 5. The diameter of the inner sliding hole 502 should match the outer diameter of the column 3 to form a sliding pair, which can ensure that the slider 5 slides smoothly on the column 3. Of course, the column 3 can also be a square column. In this case, the corresponding inner sliding hole 502 should also be square, which is an equivalent replacement.

[0033] like Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, a pair of supporting ears 503 are symmetrically provided on the outer wall of the slider 5, and a hanging ear 504 is provided on the top wall of the slider 5. The lower end surface of the photovoltaic module array 100 is hinged with a rocker I 403, and the other end of the rocker I 403 is hinged to the supporting ear 503 of the slider 5, thereby forming a rocker slider mechanism, that is, through the up and down movement of the slider 5, the rocker I 403 drives the photovoltaic module array 100 to swing up and down, thereby realizing the adjustment of the inclination angle of the photovoltaic module array 100.

[0034] Similarly, a rocker II 7 is hingedly connected to the lower end surface of the reflector array 2, and the other end of the rocker II 7 is also hingedly connected to another lug 503 of the slider 5, thereby forming a rocker-slider mechanism. That is, through the up and down movement of the slider 5, the rocker II 7 drives the reflector array 2 to swing up and down, thereby adjusting the tilt angle of the reflector array 2. Of course, the length of the rocker I 403 and the rocker II 7 can be used to achieve differential adjustment of the tilt angles of the photovoltaic array 100 and the reflector array 2. For example, when the rocker I 403 and the rocker II 7 are the same size, the tilt angles of the photovoltaic array 100 and the reflector array 2 can be adjusted by the same amount. If the rocker I 403 is long and the rocker II 7 is short, the photovoltaic array 100 has a larger tilt angle and a larger adjustment amount, while the reflector array 2 has a smaller tilt angle and a smaller adjustment amount; and vice versa.

[0035] The slider 5 is also provided with a movable pulley 601, which is rotatably installed on the slider 5 through a rotating shaft bolt rod 501. The movable pulley 601 is located directly below a support ear 503. The threaded head section of the rotating shaft bolt rod 501 is threadedly connected to the threaded hole on the slider 5, and the smooth section of the rotating shaft bolt rod 501 is used to install the movable pulley 601 to ensure smooth rotation of the movable pulley 601. Of course, a bearing can also be installed on the movable pulley 601, and the inner ring of the bearing is mounted on the rotating shaft bolt rod 501, thereby converting sliding friction into rolling friction to ensure that the movable pulley 601 rotates more smoothly. It is an equivalent replacement of this technology and a commonly used technical means in the field, so it will not be elaborated on here.

[0036] like Figure 2 As shown, the wheel train traction system 6 includes several movable pulleys 601, each mounted on the slider 5, and a steel wire rope I 602. One end of the steel wire rope I 602 is fixed, in this embodiment, to the crossbeam 402. The other end of the steel wire rope I 602 passes through several movable pulleys 601 in sequence, then around fixed pulley II 606, before being connected to a hand crank 607. When the hand crank 607 is rotated to reel in the steel wire rope I 602, the slider 5 moves upward, causing the photovoltaic array 100 and the reflector array 2 to expand. When the hand crank 607 is rotated to release the steel wire rope I 602, the slider 5 moves downward under the action of gravity, causing the photovoltaic array 100 and the reflector array 2 to move closer to the column 3.

[0037] Furthermore, it also includes a number of fixed pulleys I 603 installed on the crossbeam 402. The fixed pulleys I 603 are installed on the crossbeam 402 corresponding to the slider 5. One end of the wire rope II 604 is connected to the lug 504 of the slider 5, and the other end is connected to the counterweight 605. The wire rope II 604 passes around the fixed pulley I 603. The weight of the counterweight 605 is set according to a certain balance coefficient. In the process of adjusting the slider 5, the gravity of the counterweight 605 is in the same direction as the pulling force of the hand crank 607, which effectively reduces the load during the adjustment process, reduces labor intensity, and ensures operational safety. Of course, a set of fixed pulleys I 603, counterweight 605 and wire rope II 604 can be set corresponding to each slider 5, or as Figure 2 As shown, two groups can be provided at the upper ends of the front and rear sliders 5 , and they can be specifically configured according to the load conditions.

[0038] like Figure 1 and Figures 6 and 7 As shown, in order to ensure that the slider 5 is more stable and prevent abnormal sliding in strong winds, the present invention also provides a quick-locking locker 8. The inner diameter hole of the locker 8 is the same as the outer diameter of the column 3. It adopts a clamp structure. After the locking bolt passes through the through hole end of the locking sleeve and is connected to the threaded end of the other end, it is tightened or loosened by rotation to achieve the function of quick locking. They are all sleeved on the column 3 and are used to clamp and loosen the column 3. Before each adjustment, the locker 8 is loosened and then locked again after adjustment to fix the position of the slider 5.

[0039] Example 2:

[0040] like Figure 8 and Figure 9 As shown, the difference between this embodiment and the first embodiment is that the rocker II 7 is composed of a right-handed support rod 701, a left-handed support rod 702, and a differential sleeve 703. The adjustment amounts of the inclination angle of the photovoltaic module array and the inclination angle of the reflector array are often not exactly the same. How to achieve differentiated adjustment? The present invention provides a differential sleeve 703 with internal threads at both ends having the same parameters and opposite rotation directions (left-handed and right-handed) and self-locking characteristics, and the two ends are respectively connected to the right-handed support rod 701 and the left-handed support rod 702 with corresponding external threads. The other ends of the right-handed support rod 701 and the left-handed support rod 702 are respectively hinged to the lower end surface of the reflector array 2 and the support ear 503 of the slider 5; the rotation of the differential sleeve 703 can realize the rapid extension or contraction of the support rod assembly, thereby realizing differentiated adjustment of the inclination angles of the photovoltaic module array and the reflector array.

[0041] Rocker II 7 is comprised of a right-handed support rod 701, a left-handed support rod 702, and a differential sleeve 703. When wire rope I 602 is tightened, slider 5 slides upward, increasing the inclination angle of the photovoltaic array and reflector array. Once in position, the length of rocker II 7 can be adjusted by rotating differential sleeve 703, further increasing or decreasing the inclination angle of the reflector array. The use of threads with different rotation directions utilizes the principle of differential threads to achieve rapid length adjustment.

[0042] The present invention is described in detail above through specific and preferred embodiments, but those skilled in the art should understand that the present invention is not limited to the embodiments described above. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A traction-type adjustable photovoltaic support with a reflector, comprising a photovoltaic module array (100), characterized in that: The invention also includes a plurality of parallel columns (3), the upper long sides of the photovoltaic component array (100) and the reflector array (2) are hinged on the rotating shaft (401), the photovoltaic component array (100) and the reflector array (2) are arranged on the left and right, the upper ends of the columns (3) are installed with crossbeams (402), and the two ends of the rotating shaft (401) are fixed on the crossbeams (402); and also includes sliders (5), each column (3) is provided with a slider (5), the slider (5) slides up and down along the column (3), the lower end surface of the photovoltaic component array (100) is hinged with a rocker I (403), the other end of the rocker I (403) is hinged on the slider (5), and similarly, the lower end surface of the reflector array (2) is hinged with a rocker II (7), the other end of the rocker II (7) is also hinged on the slider (5); Also includes a movable pulley (601) mounted on the slider (5), one end of the wire rope Ⅰ (602) is fixed to the beam (402), and the other end is passed through a plurality of movable pulleys (601) in sequence, and then passed through the fixed pulley Ⅱ (606) and connected to the hand crank (607); It also includes a plurality of fixed pulleys I (603) mounted on the beam (402) corresponding to the sliders (5), a steel wire rope II (604) having one end connected to the slider (5) and the other end connected to a counterweight (605), and the steel wire rope II (604) passing around the fixed pulley I (603); The rocker II (7) comprises a right-handed support rod (701), a left-handed support rod (702), and a differential sleeve (703). Both ends of the differential sleeve (703) are internal threads with the same parameters and opposite rotation directions, which are respectively connected to the right-handed support rod (701) and the left-handed support rod (702) with corresponding external threads. The other ends of the right-handed support rod (701) and the left-handed support rod (702) are respectively hinged to the lower end surface of the reflector array (2) and the slider (5).

2. The traction-type adjustable photovoltaic support with a reflector according to claim 1, characterized in that: The cross section of the column (3) is circular or square.

3. The traction-type adjustable photovoltaic support with a reflector according to claim 2, characterized in that: The slider (5) is provided with an inner sliding hole (502) along the center line, and the slider (5) is sleeved on the column (3) through the inner sliding hole (502).

4. The traction-type adjustable photovoltaic support with a reflector according to claim 1, characterized in that: A pair of supporting ears (503) are symmetrically provided on the outer wall of the slider (5), and the lower ends of the rocker I (403) and the rocker II (7) are hinged on the supporting ears (503).

5. The traction-type adjustable photovoltaic support with a reflector according to claim 4, characterized in that: The movable pulley (601) is mounted directly below the support lug (503) of the slider (5) via the rotating shaft bolt rod (501).

6. A tow-type adjustable photovoltaic support with a reflector according to any one of claims 1 to 5, characterized in that: More than three of the columns (3) are arranged side by side in the east-west direction.

7. The traction-type adjustable photovoltaic support with a reflector according to claim 6, characterized in that: It also includes a locker (8), which is provided on the upper and lower sides of the slider (5).

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