Wind-resistant tracking components for column photovoltaic brackets

Abstract

The present invention discloses a wind-resistant tracking component of a pole-mounted photovoltaic bracket, comprising a lamp post, one side of which is mounted with a photovoltaic tracking bracket; the photovoltaic tracking bracket comprises a cantilever, the root of which is fixedly embraced outside the lamp post by at least one pair of detachable clamps; the end of the cantilever is connected to a swing arm through a hinge, and the swing arm can swing up and down around the hinge; the end of the swing arm is fixedly connected to a swing shaft; it also includes a frame-type photovoltaic panel support; a bearing seat is provided on the back of the frame-type photovoltaic panel support, and the swing shaft rotates with the bearing seat through a bearing; the sunlight tracking function of the cantilever installation method is realized, and at the same time, it also has a wind and snow resistance mode.

Description

Technical Field

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

[0002] The column photovoltaic bracket is generally fixed on the lamp post in the form of a clamp, such as Figure 1 As shown, its photovoltaic can be used to power street lights.

[0003] Since this type of photovoltaic system is installed in a cantilever form, it is difficult to use a motor to drive the photovoltaic panel to track light, especially the elevation tracking requires a large output torque to drive. Therefore, this type of cantilever photovoltaic support generally adopts a fixed structure in the existing structure. However, in high radiation scenarios such as non-summer, the fixed structure is difficult to fully utilize sunlight radiation, resulting in insufficient power generation efficiency. Summary of the invention

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a wind-resistant tracking component for a column-mounted photovoltaic bracket, which realizes the sunlight tracking function of a cantilever installation method and also has an anti-wind and snow mode.

[0005] Technical solution: To achieve the above-mentioned purpose, the wind-resistant tracking component of the pole-mounted photovoltaic bracket of the present invention comprises a street lamp pole, and a photovoltaic tracking bracket is mounted on one side of the street lamp pole;

[0006] The photovoltaic tracking bracket includes a cantilever, the root of the cantilever is fixedly embraced outside the street lamp pole by at least one pair of detachable clamps; the end of the cantilever is connected to a swing arm through a hinge, and the swing arm can swing up and down around the hinge; the end of the swing arm is fixedly connected to a swing shaft; it also includes a frame-type photovoltaic panel support; the back of the frame-type photovoltaic panel support is provided with a bearing seat, and the swing shaft rotates with the bearing seat through a bearing.

[0007] Furthermore, a photovoltaic power generation panel is fixedly installed in parallel on the frame-type photovoltaic panel support.

[0008] Furthermore, the lamp post has a longitudinal hollow counterweight guide channel, and a fixed pulley mounting hole is hollowed out on the side wall of the lamp post, in which a fixed pulley is installed by rotation of the pulley shaft; a columnar counterweight is guided in the hollow counterweight guide channel; and it also includes a first pulling steel cable, which crosses the upper side of the fixed pulley, one end of the first pulling steel cable extends vertically in the hollow counterweight guide channel and is fixedly connected to the upper end of the columnar counterweight, and the other end of the first pulling steel cable is oblique to the outside of the lamp post and is fixedly connected to the end of the swing arm away from the hinge.

[0009] Further, the base supports the columnar counterweight upward.

[0010] Furthermore, the inner wall of the lamp post is provided with a wind-resistant inner edge, and the wind-resistant inner edge is higher than the columnar counterweight under normal conditions.

[0011] Furthermore, a vertical electric telescopic device a and a vertical electric telescopic device b are symmetrically arranged on both sides of the cantilever, and the vertical electric telescopic device a and the vertical electric telescopic device b are connected to the cantilever through the electric telescopic device bracket support; the vertical electric telescopic device a and the vertical electric telescopic device b respectively include a telescopic rod a and a telescopic rod b extending downward, and the lower ends of the telescopic rod a and the telescopic rod b are respectively fixedly connected to the lifting arm a and the lifting arm b;

[0012] Taking the axis of the swing shaft as the midline, the two ends of the frame-type photovoltaic panel support are respectively recorded as support end a and support end b; the end of the a lifting arm and the end of the b lifting arm are respectively below the support end a and the support end b; the end of the a lifting arm is connected to the support end a of the frame-type photovoltaic panel support through the second pulling steel cable, and the end of the b lifting arm is connected to the support end b of the frame-type photovoltaic panel support through the third pulling steel cable.

[0013] Furthermore, when telescopic rod a and telescopic rod b are extended downward synchronously, under the joint downward pulling of the second pulling steel cable and the third pulling steel cable, the swing arm swings downward around the hinge, and the downward swinging swing arm causes the columnar counterweight to move upward under the traction of the first pulling steel cable until it contacts the wind-resistant inner edge, and the photovoltaic tracking bracket enters the wind-resistant form.

[0014] Furthermore, the working method of the wind-resistant tracking component of the column photovoltaic bracket is as follows:

[0015] Normal state: The base supports the columnar counterweight upward, and the frame-type photovoltaic panel support remains stable under the joint pulling of the first pulling steel cable, the second pulling steel cable and the third pulling steel cable. At this time, part of the gravity of the columnar counterweight itself is borne by the base;

[0016] Position tracking: Control telescopic rod b to slowly retract upwards, and at the same time, control telescopic rod a to slowly extend downwards; or control telescopic rod b to slowly extend downwards, and at the same time, control telescopic rod a to slowly retract upwards;

[0017] Elevation tracking: control telescopic rod a and telescopic rod b to extend downward or retract upward synchronously;

[0018] Wind-resistant mode:

[0019] The a and b telescopic rods are controlled to extend downward synchronously, and the columnar counterweight is lifted off the ground and ascends under the guidance of the hollow counterweight guide channel until the upper end of the columnar counterweight contacts the wind-resistant inner edge with limited pressure. At this time, the downward thrust of the a and b telescopic rods is further increased, and the combined force of the columnar counterweight's own gravity and the wind-resistant inner edge on the downward thrust of the columnar counterweight is all transmitted to the first pulling steel cable, so that the frame-type photovoltaic panel support, the photovoltaic panel and the swing arm re-enter a stable state as a whole, and the first pulling steel cable, the second pulling steel cable and the third pulling steel cable are all in a strongly tightened state, and the surface of the photovoltaic panel is in the steepest state.

[0020] Beneficial effects: The present invention realizes the sunlight tracking function of the cantilever installation mode, realizes elevation and azimuth tracking, has a low fatigue mode under normal conditions to increase the life of the bracket, and also has an anti-wind and snow mode;

[0021] In the wind and snow watching mode, the combined force of the columnar counterweight's own gravity and the downward thrust of the wind-resistant inner edge on the columnar counterweight are all transmitted to the first pulling steel cable, so that the first pulling steel cable, the second pulling steel cable and the third pulling steel cable are all in a strongly taut state, thereby improving the wind resistance at this time; at the same time, in this state, since the surface of the photovoltaic panel is in the steepest state, rainwater dripping on the surface of the photovoltaic panel will accelerate the flow and wash away the surface dust on the steep surface of the photovoltaic panel, thereby achieving the effect of cleaning the photovoltaic panel in windy and rainy weather, and at the same time, the surface of the photovoltaic panel 2 in the steepest state is not easy to accumulate ice and snow, thereby reducing or eliminating the gravity load of ice and snow in the heavy snow state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Attached Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0023] Attached Figure 2 For attachment Figure 1 An enlarged schematic diagram of the mark 3;

[0024] Attached Figure 3 For attachment Figure 2 A cross-sectional view of

[0025] Attached Figure 4 For attachment Figure 2 A top view of

[0026] Attached Figure 5 For attachment Figure 2 The structural diagram behind the lamp post is hidden on the basis;

[0027] Attached Figure 6 For attachment Figure 5 Schematic diagram from another perspective. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] As attached Figures 1 to 6 The wind-resistant tracking components of the column photovoltaic support shown in the figure are as follows: Figure 1 The above-mentioned device includes a lamp post 4, the upper end of which is equipped with a street lamp, a camera, a communication device, etc.; the lower end of the lamp post 4 is fixed to the ground through a base 1; a photovoltaic tracking bracket 3 is mounted on one side of the lamp post 4, and a photovoltaic panel 2 is mounted on the photovoltaic tracking bracket 3; an energy storage battery, a controller, etc. are installed inside the upper section of the lamp post 4, and the photovoltaic panel 2 can be charged during the power generation process.

[0030] like Figures 2 to 6 The photovoltaic tracking bracket 3 includes a cantilever 14, the root of which is fixedly embraced outside the lamp post 4 by at least one pair of detachable clamps 7; the end of the cantilever 14 is connected to a swing arm 17 through a hinge 16, and the swing arm 17 can swing up and down around the hinge 16; the end of the swing arm 17 is fixedly connected to a swing shaft 19; it also includes a frame-type photovoltaic panel support 20, on which a photovoltaic power generation panel 2 is fixedly installed in parallel; a pair of bearing seats 21 are fixedly installed on the back of the frame-type photovoltaic panel support 20, and the swing shaft 19 is rotatably matched with the bearing seats 21 through bearings; in this case, the axis of the swing shaft 19 is the azimuth tracking axis, and the axis of the hinge 16 is the elevation tracking axis.

[0031] like Figure 3 The lamp post 4 has a longitudinal hollow counterweight guide channel 25, and a fixed pulley mounting hole 11 is hollowed out on the side wall of the lamp post 4. The fixed pulley mounting hole 11 is above the clamp 7, and a fixed pulley 12 with a horizontal axis is rotatably installed in the fixed pulley mounting hole 11 through the pulley shaft 10; a columnar counterweight 27 is guided in the hollow counterweight guide channel 25; it also includes a first pulling steel cable 13, the middle part of the first pulling steel cable 13 crosses the upper side of the fixed pulley 12, one end of the first pulling steel cable 13 extends vertically in the hollow counterweight guide channel 25 and is fixedly connected to the upper end of the columnar counterweight 27, and the other end of the first pulling steel cable 13 is oblique to the outside of the lamp post 4, and is fixedly connected to the end of the swing arm 17 away from the hinge 16.

[0032] Under normal conditions, the base 1 supports the columnar counterweight 27 upward, and the inner wall of the lamp post 4 is provided with a wind-resistant inner edge 26, which is higher than the columnar counterweight 27 under normal conditions. After the columnar counterweight 27 is displaced upward for a certain distance, the upper end of the columnar counterweight 27 is limited to contact the wind-resistant inner edge 26; a vertical electric telescopic device 8 and b vertical electric telescopic device 9 are symmetrically provided on both sides of the cantilever 14, and the a vertical electric telescopic device 8 and b vertical electric telescopic device 9 are supported and connected to the cantilever 14 through the electric telescopic device bracket 6; the a vertical electric telescopic device 8 and the b vertical electric telescopic device 9 respectively include a telescopic rod 5 and a telescopic rod extending downward. The lower ends of the b telescopic rod 15, the a telescopic rod 5 and the b telescopic rod 15 are fixedly connected with the a lifting arm 24 and the b lifting arm 22 respectively; with the axis of the swing shaft 19 as the center line, the two ends of the frame-type photovoltaic panel support 20 are respectively recorded as the support end a and the support end b; the end of the a lifting arm 24 and the end of the b lifting arm 22 are respectively below the support end a and the support end b; the end of the a lifting arm 24 is connected to the support end a of the frame-type photovoltaic panel support 20 through the second pulling steel cable 23, and the end of the b lifting arm 22 is connected to the support end b of the frame-type photovoltaic panel support 20 through the third pulling steel cable 18.

[0033] When the a telescopic rod 5 and the b telescopic rod 15 are extended downward synchronously, under the joint downward pulling of the second pulling steel cable 23 and the third pulling steel cable 18, the swing arm 17 swings downward around the hinge 16, and the downward swinging swing arm 17 causes the columnar counterweight 27 to move upward under the traction of the first pulling steel cable 13 until it contacts the wind-resistant inner edge 26, and the photovoltaic tracking bracket 3 enters the wind-resistant form.

[0034] Working method: Normal state: It enters the normal state when it is idle, rainy, at night, and during the summer day (excess radiation does not need to track the sun):

[0035] In the normal state, the base 1 supports the columnar counterweight 27 upward, the swing arm 17 is in a horizontal state, and the frame-type photovoltaic panel support 20 is pulled by the first tensioning cable 13, the second tensioning cable 23 and the third tensioning cable 18 to maintain stability. At this time, the photovoltaic panel 2 installed on the frame-type photovoltaic panel support 20 is in a state of maximum elevation angle, and the surface slope of the photovoltaic panel 2 is relatively gentle. Since part of the gravity of the columnar counterweight 27 itself is borne by the base 1, the first tensioning cable 13, the second tensioning cable 23 and the third tensioning cable 18 in this state are stable. The tension strength of the steel cable 23 and the third pulling steel cable 18 is relatively small, which reduces the fatigue strength of the first pulling steel cable 13, the second pulling steel cable 23 and the third pulling steel cable 18 to increase their service life. However, in this state, due to the relatively low tension strength of the first pulling steel cable 13, the second pulling steel cable 23 and the third pulling steel cable 18, the typhoon resistance in this state is average. At the same time, in this state, the surface slope of the photovoltaic panel 2 is relatively gentle, which is not conducive to the accelerated flow of rainwater on the surface of the photovoltaic panel 2 and the washing of surface dust.

[0036] Azimuth tracking during sunlight tracking: If the frame-type photovoltaic panel support 20 and the photovoltaic panel 2 are required to be at a viewing angle A (such as Figure 2 ) rotates counterclockwise around the swing axis 19 under the viewing angle A, then on the basis of the normal state, the b telescopic rod 15 is controlled to slowly retract upwards, and at the same time, the a telescopic rod 5 is controlled to slowly extend downwards, so that the frame-type photovoltaic panel support 20 slowly rotates counterclockwise around the axis of the swing axis 19 under the pulling of the second pulling steel cable 23; if the frame-type photovoltaic panel support 20 and the photovoltaic panel 2 need to rotate clockwise around the swing axis 19 under the viewing angle A, then on the basis of the normal state, the b telescopic rod 15 is controlled to slowly extend downwards, and at the same time, the a telescopic rod 5 is controlled to slowly retract upwards, so that the frame-type photovoltaic panel support 20 slowly rotates clockwise around the axis of the swing axis 19 under the pulling of the third pulling steel cable 18; thereby achieving the azimuth tracking of the photovoltaic panel 2 under the condition of unchanged elevation angle.

[0037] Elevation angle tracking during sunlight tracking: if the frame-type photovoltaic panel support 20 and the photovoltaic panel 2 need to swing downward separately around the hinge 16, control the telescopic rod a 5 and the telescopic rod b 15 to extend downward synchronously. At this time, the support a end and the support b end of the frame-type photovoltaic panel support 20 are respectively subjected to downward pulling forces from the second pulling steel cable 23 and the third pulling steel cable 18. Based on the principle of leverage, at this time, the torques formed by the second pulling steel cable 23 and the third pulling steel cable 18 at both ends of the frame-type photovoltaic panel support 20 with the swing shaft 19 as the axis offset each other, so that the frame-type photovoltaic panel support 20 and the photovoltaic panel 2 do not rotate around the swing shaft 19 at this time; at the same time, the frame-type photovoltaic panel support 20, the photovoltaic panel 2 and the swing arm 17 are pulled as a whole by the second pulling steel cable 23. The downward pulling of the swing arm 17 and the third pulling steel cable 18 together will cause it to swing downward around the hinge 16, thereby gradually reducing the elevation angle of the photovoltaic panel 2; at the same time, the downward swinging of the swing arm 17 around the hinge 16 will pull the first pulling steel cable 13 to pull the columnar counterweight 27 upward, so that the columnar counterweight 27 is lifted off the ground and is suspended by the first pulling steel cable 13; on this basis, if the frame-type photovoltaic panel support 20 and the photovoltaic panel 2 need to swing upward around the hinge 16 separately, the a telescopic rod 5 and the b telescopic rod 15 are controlled to retract slowly and synchronously upward. Under the gravity of the columnar counterweight 27, the first pulling steel cable 13 forms an upward pulling force on the swing arm 17, thereby causing the frame-type photovoltaic panel support 20 and the photovoltaic panel 2 to swing upward around the hinge 16, thereby increasing the elevation angle of the photovoltaic panel 2.

[0038] Wind-resistant mode and rainy cleaning mode settings:

[0039] When encountering blizzards and typhoons, on the basis of normal conditions: control the a telescopic rod 5 and the b telescopic rod 15 to extend downward synchronously, and the frame-type photovoltaic panel support 20, the photovoltaic panel 2 and the swing arm 17 as a whole swing downward around the hinge 16 under the common downward pulling of the second pulling steel cable 23 and the third pulling steel cable 18. At the same time, the swing arm 17 swings downward around the hinge 16 to pull the first pulling steel cable 13 to pull the columnar counterweight 27 upward, so that the columnar counterweight 27 is lifted off the ground and rises under the guidance of the hollow counterweight guide channel 25 until the upper end of the columnar counterweight 27 is limited and pressed to contact the wind-resistant inner edge 26. At this time, the downward thrust of the a telescopic rod 5 and the b telescopic rod 15 is further increased. The columnar counterweight 27 cannot rise further due to being limited by the wind-resistant inner edge 26, so that At this time, the frame-type photovoltaic panel support 20, the photovoltaic panel 2 and the swing arm 17 re-enter a stable state as a whole, and because the columnar counterweight 27 has left the ground, the combined force formed by its own gravity and the downward thrust of the wind-resistant inner edge 26 on the columnar counterweight 27 is all transmitted to the first pulling steel cable 13, so that the first pulling steel cable 13, the second pulling steel cable 23 and the third pulling steel cable 18 are all in a strongly tightened state, thereby improving the wind resistance at this time; at the same time, in this state, since the surface of the photovoltaic panel 2 is in the steepest state, rainwater dripping on the surface of the photovoltaic panel 2 will accelerate the flow and wash away the surface dust on the steep photovoltaic panel surface, thereby achieving the effect of cleaning the photovoltaic panel in windy and rainy weather, and at the same time, the surface of the photovoltaic panel 2 in the steepest state is not easy to accumulate ice and snow, thereby reducing or eliminating the gravity load of ice and snow in a heavy snow state.

[0040] 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 principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. The wind-resistant tracking component of the column photovoltaic support is characterized by: It comprises a street lamp post (4), and a photovoltaic tracking bracket (3) is mounted on one side of the street lamp post (4); The photovoltaic tracking bracket (3) includes a cantilever (14), the root of which is fixedly embraced outside the street lamp post (4) by at least one pair of detachable clamps (7); the end of the cantilever (14) is connected to a swing arm (17) through a hinge (16), and the swing arm (17) can swing up and down around the hinge (16); the end of the swing arm (17) is fixedly connected to a swing shaft (19); and also includes a frame-type photovoltaic panel support (20); the back of the frame-type photovoltaic panel support (20) is provided with a bearing seat (21), and the swing shaft (19) is rotatably matched with the bearing seat (21) through a bearing; A photovoltaic power generation panel (2) is fixedly mounted in parallel on the frame-type photovoltaic panel support (20); The lamp post (4) has a longitudinal hollow counterweight guide channel (25), and a fixed pulley mounting hole (11) is hollowed out on the side wall of the lamp post (4), and a fixed pulley (12) is rotatably mounted in the fixed pulley mounting hole (11) through a pulley shaft (10); a columnar counterweight (27) is guided and arranged in the hollow counterweight guide channel (25); and the lamp post also includes a first pulling steel cable (13), the first pulling steel cable (13) crossing the upper side of the fixed pulley (12), one end of the first pulling steel cable (13) vertically extending in the hollow counterweight guide channel (25) and fixedly connected to the upper end of the columnar counterweight (27), and the other end of the first pulling steel cable (13) is inclined to the outside of the lamp post (4) and fixedly connected to one end of the swing arm (17) away from the hinge (16).

2. The wind-resistant tracking assembly of the column photovoltaic support according to claim 1 is characterized in that: In normal state, the base (1) supports the columnar counterweight (27) upward.

3. The wind-resistant tracking assembly of the column photovoltaic support according to claim 2 is characterized in that: The inner wall of the street lamp post (4) is provided with a wind-resistant inner edge (26), and the wind-resistant inner edge (26) is higher than the columnar counterweight (27) in the normal state.

4. The wind-resistant tracking assembly of the column photovoltaic support according to claim 3 is characterized in that: A vertical electric telescopic device (8) and a vertical electric telescopic device (9) are symmetrically arranged on both sides of the cantilever (14); the vertical electric telescopic device (8) and the vertical electric telescopic device (9) are supported and connected to the cantilever (14) through an electric telescopic device bracket (6); the vertical electric telescopic device (8) and the vertical electric telescopic device (9) respectively include a telescopic rod (5) and a telescopic rod (15) extending downwards; the lower ends of the telescopic rod (5) and the telescopic rod (15) are respectively fixedly connected to a lifting arm (24) and a lifting arm (22); With the axis of the swing shaft (19) as the center line, the two ends of the frame-type photovoltaic panel support (20) are respectively marked as support end a and support end b; the end of the a lifting arm (24) and the end of the b lifting arm (22) are respectively below the support end a and support end b; the end of the a lifting arm (24) is connected to the support end a of the frame-type photovoltaic panel support (20) by a second pulling steel cable (23), and the end of the b lifting arm (22) is connected to the support end b of the frame-type photovoltaic panel support (20) by a third pulling steel cable (18).

5. The wind-resistant tracking assembly of the column photovoltaic support according to claim 4 is characterized in that: When the telescopic rod a (5) and the telescopic rod b (15) are extended downward synchronously, the swing arm (17) swings downward around the hinge (16) under the joint downward pulling of the second pulling steel cable (23) and the third pulling steel cable (18), and the downward swinging swing arm (17) causes the columnar counterweight (27) to move upward under the traction of the first pulling steel cable (13) until it contacts the wind-resistant inner edge (26), and the photovoltaic tracking bracket (3) enters the wind-resistant form.

6. The working method of the wind-resistant tracking assembly of the column photovoltaic support according to claim 5 is characterized in that: Normal state: the base (1) supports the columnar counterweight (27) upward, and the frame-type photovoltaic panel support (20) remains stable under the joint pulling of the first pulling steel cable (13), the second pulling steel cable (23) and the third pulling steel cable (18), and at this time, part of the weight of the columnar counterweight (27) itself is borne by the base (1); Position tracking: control the telescopic rod b (15) to slowly retract upwards, and at the same time, control the telescopic rod a (5) to slowly extend downwards; or control the telescopic rod b (15) to slowly extend downwards, and at the same time, control the telescopic rod a (5) to slowly retract upwards; Elevation angle tracking: controlling the telescopic rod a (5) and the telescopic rod b (15) to extend downward or retract upward synchronously; Wind-resistant mode: The telescopic rod a (5) and the telescopic rod b (15) are controlled to extend downward synchronously, and the columnar counterweight (27) is lifted off the ground and moves upward under the guidance of the hollow counterweight guide channel (25) until the upper end of the columnar counterweight (27) contacts the wind-resistant inner edge (26) with a limited pressure. At this time, the downward thrust of the telescopic rod a (5) and the telescopic rod b (15) is further increased, and the combined force of the weight of the columnar counterweight (27) and the wind-resistant inner edge (26) on the downward thrust of the columnar counterweight (27) is fully transmitted to the first pulling steel cable (13), so that the frame-type photovoltaic panel support (20), the photovoltaic panel (2) and the swing arm (17) as a whole re-enter a stable state, and the first pulling steel cable (13), the second pulling steel cable (23) and the third pulling steel cable (18) are all in a strongly tightened state, and the surface of the photovoltaic panel (2) is in the steepest state.

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