A building distributed photovoltaic variable support system

Abstract

The present invention discloses a building distributed photovoltaic variable support system, comprising a building body, with a distributed photovoltaic array distributed on the facade of one side of the building body; the distributed photovoltaic array comprises a plurality of longitudinal photovoltaic installation axes, with a plurality of photovoltaic units installed on each of the photovoltaic installation axes at equal distances from top to bottom; the back side of a single photovoltaic unit is installed on the photovoltaic installation axis through a variable elevation support system; the purpose of achieving smooth adjustment is achieved, and the photovoltaic unit is avoided from being affected by external wind interference and its own inertia during adjustment.

Description

Technical Field

[0001] The invention belongs to the field of photovoltaics. Background Art

[0002] Generally speaking, building photovoltaic systems are usually installed on the top of the building. They have the advantages of stable lighting, high versatility and easy installation, as well as a relatively stable structure.

[0003] However, in modern buildings, especially high-rise buildings, the facades of the buildings have huge lighting areas. If they can be fully utilized, they can make up for the limited installation area on the roofs of high-rise buildings. At the same time, the installation of photovoltaic systems with variable elevation angles on the facades is subject to tests of stability and wind resistance. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a building distributed photovoltaic variable support system, which has the ability to adjust the elevation angle while improving the stability during the adjustment process.

[0005] Technical solution: To achieve the above-mentioned purpose, the present invention provides a building distributed photovoltaic variable bracket system, including a building body, on the facade of one side of the building body is distributed a distributed photovoltaic array; the distributed photovoltaic array includes a plurality of longitudinal photovoltaic installation axes, each of the photovoltaic installation axes is equidistantly installed with a plurality of photovoltaic units from top to bottom; the back side of a single photovoltaic unit is installed on the photovoltaic installation axis through a variable elevation bracket system.

[0006] Furthermore, the variable elevation bracket system includes a lower swing arm angled with the longitudinal photovoltaic installation axis, an upper swing arm, an adjustment motor, an adjustment gear, a synchronous rack, a floating rack, a first plunger cylinder, and a second plunger cylinder;

[0007] The synchronous rack is synchronized with the photovoltaic unit;

[0008] The lower end of the lower swing arm is hinged to the longitudinal photovoltaic installation axis through a hinge member a; the upper end of the lower swing arm is fixedly connected to a hinge seat b, and a hinge shaft b is fixed on the outer shell of the adjusting motor, and the hinge shaft b is rotatably mounted on the hinge seat b; the output end of the adjusting motor is driven to connect the adjusting gear, and the synchronous rack and the floating rack are engaged in parallel on both sides of the adjusting gear; the two ends of the floating rack are respectively fixedly connected to the first hydraulic plunger and the second hydraulic plunger; the first plunger cylinder and the second plunger cylinder, which are coaxial with each other, are symmetrical to the two ends of the floating rack; the first hydraulic plunger and the second hydraulic plunger are respectively movable in the first plunger cavity in the first plunger cylinder and the second plunger cavity in the second plunger cylinder.

[0009] Furthermore, one end of the first plunger cylinder away from the second plunger cylinder is integrally connected to one end of the synchronization rack through a first bent rod;

[0010] One end of the second plunger cylinder away from the first plunger cylinder is integrally connected to the other end of the synchronous rack through a second bent rod;

[0011] The first bent rod is fixedly connected to the lower end of the upper swing arm, and the upper end of the upper swing arm is hinged to the longitudinal photovoltaic installation axis through a C hinge.

[0012] Furthermore, a liquid guide channel is provided inside the strip-shaped curved structure formed by the integrated connection of the first curved rod, the synchronous rack and the second curved rod along the length direction, and the two ends of the liquid guide channel are respectively connected to the first plunger cavity and the second plunger cavity; an electromagnetic valve is provided on the path of the liquid guide channel, and when the electromagnetic valve is closed, the liquid guide channel is cut off.

[0013] Furthermore, a backboard bracket is fixed on the back of the photovoltaic unit, the second bent rod is fixedly connected to the backboard bracket via a connecting frame a, and the upper swing arm is fixedly connected to the backboard bracket via b connecting frame.

[0014] Furthermore, the first plunger cavity and the second plunger cavity are both filled with hydraulic oil;

[0015] Furthermore, both ends of the adjusting gear are provided with limited edge along the contour.

[0016] Furthermore, a method for adjusting the elevation angle of a building distributed photovoltaic variable support system is provided:

[0017] On the basis that the solenoid valve is in an open and unobstructed state, the regulating motor drives the regulating gear to rotate clockwise or counterclockwise.

[0018] Furthermore, a wind resistance method for a building distributed photovoltaic variable support system is provided: controlling the solenoid valve to perform a closing action.

[0019] Beneficial Effects: During the elevation angle adjustment process, the first plunger cavity, which gradually increases in volume, and the second plunger cavity, which gradually decreases in volume, slowly exchange liquid with each other through the narrow liquid guide channel, so that the upward swing speed of the photovoltaic unit around the C hinge is constrained by the flow rate in the narrow liquid guide channel and swings slowly, thereby achieving the purpose of smooth adjustment and avoiding the influence of external wind interference and the photovoltaic unit's own inertia during the adjustment process;

[0020] When the solenoid valve is closed, the liquid between the first plunger chamber and the second plunger chamber cannot be exchanged, so that the floating rack is completely synchronized with the synchronous rack under the common rigid constraint of the hydraulic oil filled in the closed first plunger chamber and the second plunger chamber. The floating rack and the synchronous rack should move in opposite directions under the rotational meshing action of the adjusting gear, thereby forming motion interference, so that the floating rack and the synchronous rack in the fully synchronized state enter the "interlocking" state under the action of the adjusting gear, and the elevation angle of the photovoltaic unit is completely locked, thereby improving the wind resistance of the photovoltaic unit when the elevation angle is locked. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attachment Figure 1 This is a schematic diagram of the overall structure of the building photovoltaic array;

[0022] Attachment Figure 2 A schematic diagram of several photovoltaic units installed on the same longitudinal photovoltaic installation axis;

[0023] Attachment Figure 3 This is a schematic diagram of the structure of the variable elevation bracket system on the back of the photovoltaic unit;

[0024] Attachment Figure 4 This is a side view of the photovoltaic unit;

[0025] Attachment Figure 5 For attachment Figure 4 AA cross-sectional view;

[0026] Attachment Figure 6 For attachment Figure 5 Stereoscopic image. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] As attached Figures 1 to 6 The building distributed photovoltaic variable support system, such as Figure 1 and 2As shown, it includes a building body 3, and a distributed photovoltaic array 2 is distributed on the building facade 4 on one side of the building body 3; the distributed photovoltaic array 2 includes a plurality of longitudinal photovoltaic installation shafts 6, and a plurality of bearing supports 6 are fixedly installed on the building facade 4 along the length direction of the longitudinal photovoltaic installation shaft 6, and the longitudinal photovoltaic installation shaft 6 is rotatably installed on each bearing support 6 through a bearing; a plurality of photovoltaic units 8 are equidistantly installed on each photovoltaic installation shaft 6 from top to bottom; an adjusting gear 5 is fixedly installed on the upper end of the longitudinal photovoltaic installation shaft 6 coaxially; the upper end of the building facade 4 is equipped with a gear that can be driven by a hydraulic drive device along its own length through a transverse guide rail. The azimuth adjustment rack 1 is displaced in the azimuth direction, and the azimuth adjustment rack 1 engages with the adjustment gear 5 at the upper end of each longitudinal photovoltaic installation shaft 6; during the azimuth adjustment process, the hydraulic drive device drives the azimuth adjustment rack 1 to slowly move along its own length direction, thereby driving each adjustment gear 5 and the photovoltaic installation shaft 6 to rotate synchronously, thereby achieving the purpose of adjusting the azimuth of the photovoltaic unit 8; since the elevation angle of each photovoltaic unit cannot be adjusted synchronously like the azimuth adjustment, a separate elevation adjustment structure is required on the bracket of each photovoltaic unit. The core structure of this solution is the variable bracket system with elevation adjustment function below, which is as follows:

[0029] like Figure 2 , the back side of a single photovoltaic unit 8 is mounted on the photovoltaic installation axis 6 through a variable elevation bracket system; Figure 3 、 4, 5, 6 The variable elevation bracket system includes a lower swing arm 26, an upper swing arm 14, an adjusting motor 29, an adjusting gear 16, a synchronous rack 9, a floating rack 23, a first plunger cylinder 12 and a second plunger cylinder 13, which are angled with the longitudinal photovoltaic installation axis 6; the synchronous rack 9 is synchronized with the photovoltaic unit 8; the lower end of the lower swing arm 26 is hinged to the longitudinal photovoltaic installation axis 6 through a hinge 25; the upper end of the lower swing arm 26 is fixedly connected to a hinge seat b 28, and a hinge shaft b 27 is fixed on the outer shell of the adjusting motor 29, and the hinge shaft b 27 is rotatably mounted on the hinge seat b 28; the output end of the adjusting motor 29 drives the adjustment gear 16, and the synchronous rack 9 and the floating rack 23 are parallel and meshed on both sides of the adjustment gear 16; the two ends of the floating rack 23 are respectively fixedly connected to the first hydraulic plunger 21 and the second hydraulic plunger 22; the first plunger cylinder 12 and the second plunger cylinder 13, which are coaxial with each other, are symmetrical to the two ends of the floating rack 23; the first hydraulic plunger 21 and the second hydraulic plunger 22 are respectively movable The first plunger chamber 20 in the first plunger cylinder 12 and the second plunger chamber 19 in the second plunger cylinder 13 are both filled with hydraulic oil; the end of the first plunger cylinder 12 away from the second plunger cylinder 13 is integrated with one end of the synchronous rack 9 through the first bent rod 15; the end of the second plunger cylinder 13 away from the first plunger cylinder 12 is integrated with the other end of the synchronous rack 9 through the second bent rod 17; the first bent rod 15 is fixedly connected to the lower end of the upper swing arm 14, and the upper end of the upper swing arm 14 is hinged to the longitudinal photovoltaic installation axis 6 through the C hinge 24; the interior of the strip-shaped curved structure formed by the integrated connection of the first bent rod 15, the synchronous rack 9 and the second bent rod 17 is provided with a liquid guide channel 10 along the length direction, and the two ends of the liquid guide channel 10 are respectively connected to the first plunger chamber 20 and the second plunger chamber 19; an electromagnetic valve 11 is provided on the path of the liquid guide channel 10, and when the electromagnetic valve 11 is closed, the liquid guide channel 10 is cut off.

[0030] A back panel bracket 30 is fixed on the back of the photovoltaic unit 8, the second bent rod 17 is fixedly connected to the back panel bracket 30 through the a connecting frame 18, and the upper swing arm 14 is fixedly connected to the back panel bracket 30 through the b connecting frame 18; both ends of the adjusting gear 16 are provided with a limiting edge 16.1 along the contour, and the limiting edge 16.1 serves to prevent the adjusting gear 16 from axial displacement.

[0031] Working principle:

[0032] Adjustment and locking of elevation angle:

[0033] From a side perspective of the variable elevation bracket system, the lines connecting the a hinge 25, the b hinge shaft 27, and the c hinge 24 form a virtual triangle, with the three sides of the virtual triangle being denoted as the first side x, the second side y, and the third side z. The first side x is the line connecting the a hinge 25 and the b hinge shaft 27; the second side y is the line connecting the b hinge shaft 27 and the c hinge 24; and the third side z is the line connecting the c hinge 24 and the a hinge 25.

[0034] During the process of adjusting the elevation angle, the solenoid valve 11 is in an open state, so that the first plunger cavity 20 and the second plunger cavity 19 are in a mutually connected relationship under the action of the liquid guide channel 10;

[0035] exist Figure 5 From the perspective of , when the adjusting motor 29 drives the adjusting gear 16 to rotate clockwise, under the action of meshing transmission, the synchronous rack 9 is displaced in the upward direction along its own length direction relative to the adjusting gear 16. At the same time, the floating rack 23 is displaced in the downward direction along its own length direction relative to the adjusting gear 16. During the upward displacement of the synchronous rack 9 relative to the adjusting gear 16 along its own length direction, the second side y of the virtual triangle becomes longer, and the angle between the first side x and the third side z becomes larger, thereby causing the photovoltaic unit 8 to swing upward at a certain angle around the c hinge 24, thereby achieving the purpose of raising the elevation angle of the photovoltaic unit 8.

[0036] During the upward displacement of the synchronous rack 9 relative to the adjusting gear 16 along its own length direction, since the first plunger cylinder 12 and the second plunger cylinder 13 are synchronized with the synchronous rack 9, Figure 5 From the perspective of , when the adjusting gear 16 rotates clockwise, the volume of the first plunger chamber 20 gradually increases, and the volume of the second plunger chamber 19 gradually decreases; the first plunger chamber 20 with a gradually increasing volume and the second plunger chamber 19 with a gradually decreasing volume slowly exchange liquid with each other through the narrow liquid guide channel 10, so that the speed at which the photovoltaic unit 8 swings upward around the c hinge 24 is constrained by the flow in the narrow liquid guide channel 10 and swings slowly, thereby achieving the purpose of smooth adjustment and avoiding the photovoltaic unit 8 being affected by external wind interference and its own inertia during the adjustment process.

[0037] Similarly, in Figure 5 From the perspective of , when the adjustment motor 29 drives the adjustment gear 16 to rotate counterclockwise, the photovoltaic unit 8 will swing downward around the c hinge 24 by a certain angle, thereby achieving the purpose of reducing the elevation angle of the photovoltaic unit 8;

[0038] When encountering strong winds, at night, etc., in order to improve the wind resistance, it is necessary to lock the elevation angle of the photovoltaic unit 8. At this time, the solenoid valve 11 is controlled to perform a closing action, thereby cutting off the liquid guide channel 10, so that the liquid between the first plunger chamber 20 and the second plunger chamber 19 cannot be exchanged, so that the floating rack 23 is completely synchronized with the synchronous rack 9 under the common rigid constraint of the hydraulic oil filled in the closed first plunger chamber 20 and the second plunger chamber 19. The floating rack 23 and the synchronous rack 9 should be positioned in opposite directions of movement under the rotational meshing action of the adjusting gear 16, thereby forming motion interference, so that the floating rack 23 and the synchronous rack 9 in the fully synchronized state enter the "interlocked" state under the action of the adjusting gear 16. At the same time, the interlocked floating rack 23 and the synchronous rack 9 in turn prevent the adjusting gear 16 from rotating, so that the elevation angle of the photovoltaic unit 8 is completely locked, thereby improving the wind resistance of the photovoltaic unit 8 when the elevation angle is locked.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A building distributed photovoltaic variable support system, characterized by: The invention comprises a building (3), wherein a distributed photovoltaic array (2) is distributed on a building facade (4) on one side of the building (3); the distributed photovoltaic array (2) comprises a plurality of longitudinal photovoltaic installation axes (6), and a plurality of photovoltaic units (8) are installed on each photovoltaic installation axis (6) at equal distances from top to bottom; the back side of each photovoltaic unit (8) is installed on the photovoltaic installation axis (6) via a variable elevation bracket system; The variable elevation bracket system comprises a lower swing arm (26) angled with a longitudinal photovoltaic installation axis (6), an upper swing arm (14), an adjustment motor (29), an adjustment gear (16), a synchronous rack (9), a floating rack (23), a first plunger cylinder (12) and a second plunger cylinder (13); The synchronization rack (9) is synchronized with the photovoltaic unit (8); The lower end of the lower swing arm (26) is hinged to the longitudinal photovoltaic installation shaft (6) through the a hinge member (25); the upper end of the lower swing arm (26) is fixedly connected to the b hinge seat (28), and the housing of the adjustment motor (29) is fixed with a b hinge shaft (27), and the b hinge shaft (27) is rotatably mounted on the b hinge seat (28); the output end of the adjustment motor (29) is driven to connect the adjustment gear (16), and the synchronous rack (9) and the floating rack (23) are parallel and meshed. Both sides of the adjusting gear (16); the two ends of the floating rack (23) are respectively fixedly connected with a first hydraulic plunger (21) and a second hydraulic plunger (22); the first plunger cylinder (12) and the second plunger cylinder (13) which are coaxial with each other are symmetrical to the two ends of the floating rack (23); the first hydraulic plunger (21) and the second hydraulic plunger (22) are respectively movable in a first plunger cavity (20) in the first plunger cylinder (12) and a second plunger cavity (19) in the second plunger cylinder (13); One end of the first plunger cylinder (12) away from the second plunger cylinder (13) is integrally connected to one end of the synchronous rack (9) via a first bent rod (15); One end of the second plunger cylinder (13) away from the first plunger cylinder (12) is integrally connected to the other end of the synchronous rack (9) via a second bent rod (17); The first bent rod (15) is fixedly connected to the lower end of the upper swing arm (14), and the upper end of the upper swing arm (14) is hinged to the longitudinal photovoltaic installation axis (6) through a C hinge (24); A liquid guide channel (10) is provided inside the strip-shaped curved structure formed by integrally connecting the first curved rod (15), the synchronous rack (9) and the second curved rod (17) along the length direction, and the two ends of the liquid guide channel (10) are respectively connected to the first plunger cavity (20) and the second plunger cavity (19); an electromagnetic valve (11) is provided on the path of the liquid guide channel (10), and when the electromagnetic valve (11) is closed, the liquid guide channel (10) is cut off; A back panel bracket (30) is fixed on the back of the photovoltaic unit (8); the second bent rod (17) is fixedly connected to the back panel bracket (30) via an a connecting frame (18); and the upper swing arm (14) is fixedly connected to the back panel bracket (30) via a b connecting frame (18).

2. A building distributed photovoltaic variable support system according to claim 1, characterized in that: The first plunger cavity (20) and the second plunger cavity (19) are both filled with hydraulic oil.

3. A building distributed photovoltaic variable support system according to claim 2, characterized in that: Both ends of the regulating gear (16) are provided with limiting edges (16.1) along the contour.

4. The elevation angle adjustment method of a building distributed photovoltaic variable support system according to claim 3, characterized in that: On the basis that the electromagnetic valve (11) is in an open and unobstructed state, the regulating motor (29) drives the regulating gear (16) to rotate clockwise or counterclockwise.

5. The wind resistance method for a building distributed photovoltaic variable support system according to claim 3, characterized in that: Control the solenoid valve (11) to perform a closing action.

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