A photovoltaic tracker

Abstract

The present invention discloses a photovoltaic tracker, which relates to the field of photovoltaic technology. It includes a vertical column, on which a horizontal main beam is provided, and the main beam is rotatably connected to the column along its axial direction, and a plurality of cross bars are provided on the main beam, and a photovoltaic panel is provided on the side of the cross bar away from the main beam; it also includes a self-locking device, and the self-locking device includes a connecting piece and a locking piece; the connecting piece is provided on a side of the main beam close to the column, and at least one end of the connecting piece is provided on the main beam or the cross bar; the locking piece is provided on the column, and is used to lock the connecting piece to the column. The locking piece can lock the connecting piece to the column, which reduces the possibility of the connecting piece continuing to rotate, reduces the impact of the strong wind environment on the photovoltaic tracker, and reduces the possibility of damage to the photovoltaic tracker.

Description

Technical Field

[0001] The invention relates to the field of photovoltaic technology, in particular to a photovoltaic tracker. Background Art

[0002] With the development of society, people's demand for electricity is increasing, and solar energy, as a natural renewable energy source, is gradually being developed and utilized by people; photovoltaic trackers are usually installed on existing solar devices to enable photovoltaic panels to be as perpendicular to the sun's rays as possible.

[0003] The operation process of photovoltaic trackers is divided into reverse tracking, automatic tracking, strong wind, snow, rain and other operation modes. For example, in strong wind and snow, certain protective measures need to be activated. In order to deal with the damage caused by strong winds to the structure of photovoltaic trackers, structural reinforcement or thickening is usually adopted on the main bearing structures such as main beams, columns or purlins, or columns are added to resist the destructive effects of strong winds on the structure. This solution undoubtedly increases the system cost.

[0004] At present, for protection on windy days, shock absorbers are usually installed to absorb the structural load of wind pressure on the tracker. However, on windy days, photovoltaic trackers usually adopt a flat and stationary tracking mode. At this time, due to the angle between the shock absorber and the main beam, the shock absorber's vibration absorption effect is not very good, and the photovoltaic tracker is still easy to be damaged. Summary of the invention

[0005] The purpose of the present invention is to provide a photovoltaic tracker, wherein a locking member can lock a connecting member on a column, thereby reducing the possibility of the connecting member continuing to rotate, reducing the impact of a strong wind environment on the photovoltaic tracker, and reducing the possibility of damage to the photovoltaic tracker.

[0006] The technical solution provided by the present invention is as follows:

[0007] A photovoltaic tracker comprises a vertical column, wherein a horizontal main beam is arranged on the column, wherein the main beam is rotatably connected to the column along its axial direction, wherein a plurality of purlins are arranged on the main beam, and a photovoltaic panel is arranged on the side of the purlin away from the main beam; further comprising a self-locking device, wherein the self-locking device comprises a cross bar, a connecting piece and a locking piece; the cross bar is fixed to the main beam along a direction perpendicular to the axial direction of the main beam; the connecting piece is arranged on a side of the main beam close to the column, and at least one end of the connecting piece is arranged on the main beam or the cross bar; the locking piece is arranged on the column for locking the connecting piece to the column; the minimum distance between the connecting piece and the axis of the main beam is less than or equal to the distance between the locking piece and the axis of the main beam; the maximum distance between the connecting piece and the axis of the main beam is greater than or equal to the distance between the locking piece and the axis of the main beam.

[0008] In the present technical solution, there is at least one point on the connecting piece whose spacing from the axis of the main beam is the same as the spacing between the locking pieces. Therefore, when the main beam rotates and drives the connecting piece to rotate, until the spacing between the intersection position of the connecting piece and the column and the axis of the main beam is equal to the spacing between the locking piece and the axis of the main beam, the locking piece intersects with the connecting piece, and the locking piece can lock the connecting piece on the column, thereby reducing the possibility of the connecting piece continuing to rotate, reducing the impact of strong wind environment on the photovoltaic tracker, and reducing the possibility of damage to the photovoltaic tracker.

[0009] Furthermore, it also includes a wind speed sensing component and a driving component arranged on the column; the wind speed sensing component is used to sense whether the current wind speed is greater than the preset wind speed; the driving component is used to drive the locking member to lock the connecting member to the column when the current wind speed is greater than the preset wind speed.

[0010] In the technical solution, the photovoltaic tracker realizes automatic locking of the self-locking device through the arrangement of the wind speed sensing component and the driving component, thereby increasing the degree of automation of the photovoltaic tracker.

[0011] Furthermore, the connecting member is a flexible member, and both ends of the connecting member are arranged on the same cross bar, and both ends of the connecting member are located on both sides of the main beam.

[0012] In this technical solution, the photovoltaic tracker can be fixed and locked by a flexibly arranged connecting piece, and the locking process is relatively simple.

[0013] Furthermore, one end of the connecting member is arranged on the cross bar, and the other end of the connecting member extends toward a direction close to the column.

[0014] In this technical solution, when the main beam rotates and drives the connecting piece to rotate, the connecting piece can intersect with the column as early as possible, thereby increasing the speed at which the connecting piece and the locking piece are locked.

[0015] Furthermore, the connecting member extends along the circumferential direction of the main beam.

[0016] In the technical solution, through the circumferentially arranged connecting parts, when the main beam rotates and drives the connecting parts to rotate, the distance between the intersection of the connecting parts and the columns and the axis of the main beam remains unchanged. Therefore, by setting a locking part, locking of multiple positions can be achieved, thereby increasing the reliability of the locking part in locking the connecting parts.

[0017] Furthermore, the self-locking device also includes a limiting plate, and the limiting plate is also provided with a limiting hole through which the connecting member passes.

[0018] In the technical solution, by providing the limiting plate and the limiting hole, the possibility of shaking of the connecting piece is reduced, the stability of the connecting piece is increased, and the possibility of separation of the locking piece and the connecting piece is reduced.

[0019] Furthermore, one end of the connecting member is arranged on the main beam, and the other end of the connecting member extends in a direction away from the cross bar.

[0020] In this technical solution, when the connecting member is set on the main beam, there is no need to control the structure of the connecting member. The connecting member can intersect with the column during the rotation process. The structural requirements of the connecting member are relatively low, which facilitates the processing and setting of the connecting member.

[0021] Furthermore, the connecting member is a rigid member, and the connecting member is arranged along the radial direction of the main beam.

[0022] In the technical solution, by setting the connecting piece in the radial direction, when the connecting piece intersects with the column, any position on the connecting piece intersects with the column, which increases the intersection positions of the connecting piece and the column and also increases the setting range of the locking piece position.

[0023] Furthermore, the connecting member is provided with a locking hole for inserting the locking member.

[0024] In the technical solution, by providing the locking hole, the original friction locking method is changed to a plug-in locking method, which reduces the possibility of the connecting piece continuing to rotate and increases the stability of the connecting piece.

[0025] Furthermore, the locking holes are provided in plurality, and the plurality of locking holes are distributed around the connecting member along the axial direction of the main beam.

[0026] In the present technical solution, by providing a plurality of locking holes, it is convenient to lock the locking piece at different positions of the connecting piece, thereby controlling the photovoltaic panel to be fixed at different angles, thereby increasing the application range of the photovoltaic tracker; at the same time, it also reduces the possibility that the locking piece is not inserted into the locking hole, thereby increasing the stability of the connection between the locking piece and the locking hole.

[0027] Compared with the prior art, the photovoltaic tracker provided by the present invention has the following beneficial effects:

[0028] 1. When the main beam rotates and drives the connector to rotate, until the distance between the intersection of the connector and the column and the axis of the main beam is equal to the distance between the locking piece and the axis of the main beam, the locking piece intersects with the connector, and the locking piece can lock the connector on the column, reducing the possibility of the connector continuing to rotate, reducing the impact of strong winds on the photovoltaic tracker, and reducing the possibility of damage to the photovoltaic tracker.

[0029] 2. Through the circumferentially arranged connecting parts, when the main beam rotates and drives the connecting parts to rotate, the distance between the intersection of the connecting parts and the columns and the axis of the main beam remains unchanged. Therefore, by setting a locking part, locking at multiple positions can be achieved, which increases the reliability of the locking part locking the connecting parts.

[0030] 3. By setting the connecting piece in the radial direction, when the connecting piece intersects with the column, any position on the connecting piece intersects with the column, which increases the intersection position of the connecting piece and the column and also increases the setting range of the locking piece position.

[0031] 4. By setting the locking hole, the original friction locking method is changed to a plug-in locking method, which reduces the possibility of the connector continuing to rotate and increases the stability of the connector.

[0032] 5. Through the provision of multiple locking holes, the locking piece can be locked at different positions of the connecting piece, thereby controlling the photovoltaic panel to be fixed at different angles, thereby increasing the application range of the photovoltaic tracker; at the same time, it also reduces the possibility that the locking piece is not inserted into the locking hole, thereby increasing the stability of the connection between the locking piece and the locking hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above characteristics, technical features, advantages and implementation methods of a photovoltaic tracker.

[0034] Figure 1 It is a schematic structural diagram of a photovoltaic tracker of the present invention;

[0035] Figure 2 is a schematic structural diagram of another photovoltaic tracker of the present invention;

[0036] Figure 3 It is a structural schematic diagram of another connecting member in a photovoltaic tracker of the present invention.

[0037] Description of the reference numerals: 1. Column, 2. Main beam, 3. Purlin, 4. Self-locking device, 41. Crossbar, 5. Connector, 51. Locking hole, 6. Locking piece, 7. Driving assembly, 8. Limiting plate, 81. Limiting hole, 9. Connecting plate, DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0039] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0040] Embodiment 1: Figure 1 As shown, a photovoltaic tracker includes a vertical column 1, which can be set on the ground or on the roof; a horizontal main beam 2 is provided on the column 1, and the main beam 2 can be rotated along its axial direction and connected to the column 1, and a plurality of purlins 3 are provided on the main beam 2, and the purlin 3 is horizontally arranged on the main beam 2 in a direction perpendicular to the main beam 2, and a photovoltaic panel (not shown in the figure) is provided on the side of the purlin 3 away from the main beam 2.

[0041] It also includes a self-locking device 4 , which includes a cross bar 41 , a connecting member 5 and a locking member 6 .

[0042] The cross bar 41 can be fixed to the main beam 2 along an axial direction perpendicular to the main beam 2; the connecting member 5 is arranged on the side of the main beam 2 close to the column 1, and at least one end of the connecting member 5 is arranged on the main beam 2 or the cross bar 41; the locking member 6 is arranged on the column 1, which is used to lock the connecting member 5 to the column 1; the minimum distance between the connecting member 5 and the axis of the main beam 2 is less than or equal to the distance between the locking member 6 and the axis of the main beam 2; the maximum distance between the connecting member 5 and the axis of the main beam 2 is greater than or equal to the distance between the locking member 6 and the axis of the main beam 2.

[0043] In this embodiment, there is at least one point on the connecting member 5 whose distance from the axis of the main beam 2 is the same as the distance between the locking member 6. Therefore, when the main beam 2 rotates and drives the connecting member 5 to rotate, until the distance between the intersection position of the connecting member 5 and the column 1 and the axis of the main beam 2 is equal to the distance between the locking member 6 and the axis of the main beam 2, the locking member 6 intersects with the connecting member 5, and the locking member 6 can lock the connecting member 5 on the column 1, reducing the possibility of the connecting member 5 continuing to rotate, reducing the impact of the strong wind environment on the photovoltaic tracker, and reducing the possibility of damage to the photovoltaic tracker.

[0044] According to the improvement of the above embodiment, the present embodiment further includes a wind speed sensing component (not shown in the figure) and a driving component (not shown in the figure) arranged on the column 1, and a controller electrically connected to the wind speed sensing component and the driving component. The wind speed sensing component can be used to sense whether the current wind speed is greater than the preset wind speed, and the preset wind speed can be changed according to user needs; the driving component is used to drive the locking member 6 to lock the connecting member 5 to the column 1 when the current wind speed is greater than the preset wind speed.

[0045] Specifically, when the wind speed sensing component senses that the wind speed is greater than the preset wind speed, the wind speed sensing component can send a control signal to the controller. When the controller receives the control signal, it can send a drive signal to the drive component. A connection sensing component can also be set on the column 1 to sense whether there is a connector 5 on the front side of the column 1, and whether there is a connector 5 in front of the column 1. When the connector 5 intersects with the connection sensing component, the controller controls the locking component 6 to lock the connector 5 on the column 1.

[0046] By setting the wind speed sensing component and the driving component, the photovoltaic tracker realizes the automatic locking of the self-locking device 4, thereby increasing the automation degree of the photovoltaic tracker.

[0047] Embodiment 2: Figure 1 As shown, a photovoltaic tracker is shown, and the difference between this embodiment and the first embodiment lies in the specific structure of the connecting member 5.

[0048] On the basis of the first embodiment, in this embodiment, the connecting member 5 is a flexible member, and both ends of the connecting member 5 are arranged on the same cross bar 41, and both ends of the connecting member 5 are located on both sides of the main beam 2; specifically, the connecting member 5 is a steel wire rope, and the upper ends of the connecting member 5 are respectively fixed on the cross bars 41 on both sides of the main beam 2, and the lower end of the connecting member 5 is naturally suspended, and the height of the lower end of the connecting member 5 is lower than or equal to the height of the locking member 6. Therefore, there is at least one point on the connecting member 5 that intersects with the column 1, and the locking member 6 is arranged at the position where the connecting member 5 intersects with the column 1.

[0049] When strong winds come, the user controls the locking member 6 to move closer to one side of the column 1 and clamps the connecting member 5 between the column 1 and the locking member 6 to complete the locking of the connecting member 5; or the user clamps the connecting member 5 through the two push rods of the locking member 6 to complete the locking of the connecting member 5.

[0050] The connection member 5 of the photovoltaic tracker can be fixed and locked by the flexible connection member 5, and the locking process is relatively simple.

[0051] Embodiment 3: Figure 1 As shown, a photovoltaic tracker is shown. The difference between this embodiment and the first embodiment lies in the specific structure of the connecting member 5.

[0052] On the basis of Example 1, in this embodiment, one end of the connecting member 5 is arranged on the cross bar 41, and the other end of the connecting member 5 extends in the direction close to the column 1; when the main beam 2 rotates and drives the connecting member 5 to rotate, the connecting member 5 can also approach the column, and the connecting member 5 can intersect with the column 1 as soon as possible, thereby increasing the speed at which the connecting member 5 and the locking member 6 are locked, and increasing the locking efficiency of the self-locking device 4.

[0053] Preferably, the connecting member 5 extends along the circumferential direction of the main beam 2 ; specifically, the connecting member 5 is an arc-shaped rod, more specifically, the connecting member 5 is a semicircular arc-shaped rod, and both ends of the connecting member 5 are arranged on the cross bar 41 .

[0054] Through the circumferentially arranged connecting member 5, when the main beam 2 rotates and drives the connecting member 5 to rotate, the distance between the intersection position of the connecting member 5 and the column 1 and the axis of the main beam 2 remains unchanged. Therefore, by setting a locking member 6, locking at multiple positions can be achieved, thereby increasing the reliability of the locking member 6 locking the connecting member 5.

[0055] According to the improvement of the above embodiment, in this embodiment, the self-locking device 4 further includes a limiting plate 8, and the limiting plate 8 is further provided with a limiting hole 81 through which the connecting member 5 passes. By providing the limiting plate 8 and the limiting hole 81, the possibility of shaking of the connecting member 5 is reduced, the stability of the connecting member 5 is increased, and the possibility of separation of the locking member 6 from the connecting member 5 is reduced.

[0056] Specifically, the limit plate 8 can be arranged on the column in the vertical direction, the limit hole 81 is adapted to the cross-section of the connecting member 5, and the cross-sectional area of ​​the limit hole 81 is larger than the cross-sectional area of ​​the connecting member 5; preferably, connecting plates 9 can also be arranged at the upper and lower ends of the limit plate 8, and the connecting plate 9 and the limit plate 8 can be integrally formed; the locking member 6 can be horizontally arranged on the column 1 and horizontally abutted against the connecting member 5, or the locking member 6 can be arranged on the connecting plate 9, and the connecting member 5 will be abutted against the connecting plate 9 or another push rod through the push rod.

[0057] The limiting plate 8 with the limiting hole 81 described in this embodiment can also be applied to the second embodiment.

[0058] Embodiment 4: Figure 2 and Figure 3 As shown, a photovoltaic tracker is shown, and the difference between this embodiment and the first embodiment lies in the specific structure of the connecting member 5.

[0059] On the basis of Example 1, in this embodiment, one end of the connecting member 5 is arranged on the main beam 2, and the other end of the connecting member 5 extends in the direction away from the cross bar 41; when the connecting member 5 is arranged on the main beam 2, and because the connecting member 5 is arranged on the side of the main beam 2 close to the column 1, therefore, in the process of the main beam 2 rotating and driving the connecting member 5 to rotate, the connecting member 5 can intersect with the column 1, and the locking member 6 can be arranged at the position where the connecting member 5 intersects with the column 1.

[0060] In this embodiment, when the connecting member 5 is set on the main beam 2, there is no need to control the structure of the connecting member 5. The connecting member 5 can intersect with the column 1 during the rotation process. The structural requirements of the connecting member 5 are relatively low, which facilitates the processing and setting of the connecting member 5.

[0061] Specifically, the connecting member 5 can be selected as a steel wire rope or a steel plate; the connecting member 5 is fixed on the main beam 2, or the connecting member 5 is connected by Figure 3 The clamp structure shown is clamped on the main beam 2, rotates with the main beam 2, is fixed on the main beam 2, and is detachably connected to the main beam 2; the locking member 6 is a push rod or a locking structure formed by two push rods, and the locking member 6 is horizontally arranged at the intersection of the connecting member 5 on the column 1 and the column 1. When there are multiple intersection positions between the connecting member 5 and the column 1, the user can arbitrarily select an intersection position as the position of the locking member 6 according to needs.

[0062] When the main beam 2 rotates and drives the connecting member 5 to rotate to the intersecting position, and the connecting member 5 is aligned with the locking member 6, the push rod of the locking member 6 can abut against the connecting member 5, or the connecting member 5 can be abutted against the column 1 through the push rod, or the two push rods of the locking member 6 can clamp the connecting member 5, so that the locking member 6 locks the connecting member 5 on the column 1.

[0063] Preferably, the connector 5 is a rigid member, and the connector 5 can be arranged along the radial direction of the main beam 2. In this embodiment, by arranging the connector 5 in the radial direction, when the connector 5 intersects with the column 1, any position on the connector 5 intersects with the column 1, increasing the intersection position of the connector 5 and the column 1, and also increasing the setting range of the position of the locking member 6.

[0064] At the same time, when the connecting member 5 is a rigid member, the impact of strong wind environment on the connecting member 5 is also reduced, the possibility of shaking of the connecting member 5 is reduced, and the stability of the connecting member 5 is increased; the connecting member 5 in the current state can only intersect with the column 1 at one angle state. Therefore, in combination with Example 1, when the controller needs to control the locking member 6 to lock the connecting member 5, the user can install an angle monitoring device on the connecting member 5 to realize angle monitoring, and control the locking member 6 to lock the connecting member 5 only when the connecting member 5 coincides with the column 1, thereby optimizing the controller process.

[0065] According to the improvement of the above embodiment, in the present embodiment, a locking hole 51 for inserting a locking member 6 is provided on the connecting member 5, and the locking hole 51 is provided at the end of the connecting member 5 away from the main beam 2; when the main beam 2 rotates to drive the connecting member 5 to rotate, until the connecting member 5 intersects with the column 1, the locking hole 51 can correspond to the locking member 6, and the locking member 6 can be inserted into the locking hole 51, thereby completing the locking member 6 locking the connecting member 5 on the column 1.

[0066] According to the improvement of the above embodiment, in this embodiment, by setting the locking hole 51, the original friction locking method is changed to a plug-in locking method, which reduces the possibility of the connecting member 5 continuing to rotate and increases the stability of the connecting member 5.

[0067] Preferably, a plurality of locking holes 51 are provided, and the plurality of locking holes 51 are distributed around the connecting member 5 along the axial direction of the main beam 2; when the connecting member 5 is rotated to be about to intersect with the column 1 or has intersected with the column 1, the locking member 6 is extended and can abut against the connecting member 5, and the connecting member 5 continues to rotate, and the locking member 6 can correspond to one of the plurality of locking holes 51, and the locking member 6 can be inserted into the locking hole 51.

[0068] Preferably, in this embodiment, by providing a plurality of locking holes 51, it is convenient to lock the locking member 6 at different positions of the connecting member 5, thereby controlling the photovoltaic panel to be fixed at different angles, thereby increasing the application range of the photovoltaic tracker; at the same time, it also reduces the possibility that the locking member 6 is not inserted into the locking hole 51, thereby increasing the stability of the connection between the locking member 6 and the locking hole 51.

[0069] The locking hole 51 described in this embodiment is also applicable to the third embodiment.

[0070] Therefore, when the locking hole 51 is formed on the connecting member 5 described in the third embodiment, the connecting member 5 is a plate-to-plate member, and the width of the connecting member 5 is greater than the diameter of the locking hole 51 .

[0071] It should be noted that the above embodiments can be freely combined as needed. 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, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A photovoltaic tracker, characterized in that: It comprises a vertical column, on which a horizontal main beam is arranged, the main beam is rotatably connected to the column along its axis, a plurality of purlins are arranged on the main beam, and a photovoltaic panel is arranged on a side of the purlin away from the main beam; Also included is a self-locking device, which includes a crossbar, a connecting piece and a locking piece; The cross bar is fixed to the main beam along a direction perpendicular to the axis of the main beam; The connecting member is arranged on a side of the main beam close to the column, and at least one end of the connecting member is arranged on the main beam or the cross bar; The locking member is disposed on the column and is used to lock the connecting member to the column; The minimum distance between the connecting member and the main beam axis is less than or equal to the distance between the locking member and the main beam axis; The maximum distance between the connecting member and the axis of the main beam is greater than or equal to the distance between the locking member and the axis of the main beam; It also includes a wind speed sensing component, and a driving component and a connection sensing component arranged on the column; The wind speed sensing component is used to sense whether the current wind speed is greater than the preset wind speed; the connection sensing component is used to sense whether the connection piece exists on the front side of the column; The driving component is used to drive the locking member to lock the connecting member to the column when the current wind speed is greater than the preset wind speed and the connecting member intersects with the connection sensing component.

2. A photovoltaic tracker according to claim 1, characterized in that: The connecting member is a flexible member, and both ends of the connecting member are arranged on the same cross bar, and both ends of the connecting member are located on both sides of the main beam.

3. A photovoltaic tracker according to claim 1, characterized in that: One end of the connecting member is arranged on the cross bar, and the other end of the connecting member extends toward the direction close to the column.

4. A photovoltaic tracker according to claim 3, characterized in that: The connecting member extends along the circumferential direction of the main beam.

5. A photovoltaic tracker according to claim 2 or 4, characterized in that: The self-locking device also includes a limiting plate, and the limiting plate is also provided with a limiting hole through which the connecting member passes.

6. A photovoltaic tracker according to claim 1, characterized in that: One end of the connecting member is arranged on the main beam, and the other end of the connecting member extends in a direction away from the cross bar.

7. A photovoltaic tracker according to claim 6, characterized in that: The connecting member is a rigid member and is arranged along the radial direction of the main beam.

8. A photovoltaic tracker according to claim 3 or 7, characterized in that: The connecting piece is provided with a locking hole for inserting the locking piece.

9. A photovoltaic tracker according to claim 8, characterized in that: The locking holes are arranged in a plurality, and the plurality of locking holes are distributed around the connecting member along the axial direction of the main beam.

Images