Damper for a flexible photovoltaic support

Abstract

A kind of damper of flexible photovoltaic support, including clamp and damping box, clamp is arranged at the top of damping box, for with the load cable of flexible photovoltaic support connection, first U-shaped chamber and second U-shaped chamber are opened in the inside of damping box, the curved plane of first U-shaped chamber is parallel to the extension direction of load cable, the curved plane of second U-shaped chamber is perpendicular to the extension direction of load cable, first U-shaped chamber and second U-shaped chamber are filled with damping liquid in, multiple through holes are opened in the top of damping box, multiple through holes are respectively communicated with the two ends of first U-shaped chamber and second U-shaped chamber.The utility model aims at improving the wind vibration resistance of flexible photovoltaic support.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic support technology, specifically a damper for a flexible photovoltaic support. Background Technology

[0002] Flexible photovoltaic (PV) support structures are a type of support structure for PV systems, distinct from traditional rigid supports. Drawing inspiration from suspension bridges or cable-stayed bridges, they suspend and secure PV modules using a combination of high-strength prestressed cables and stable support structures. Flexible PV support structures can span tens or even hundreds of meters and adapt to undulating terrain such as mountains and hills. However, due to their inherent flexibility, flexible PV support structures are prone to vibration under wind loads. Prolonged vibration can significantly exacerbate metal fatigue, potentially leading to cable, clamp, or connector breakage and ultimately, structural collapse. Utility Model Content

[0003] The present invention aims to provide a damper for a flexible photovoltaic support to improve the wind vibration resistance of the flexible photovoltaic support.

[0004] To solve the above technical problems, the specific solution adopted by this utility model is as follows: it includes a clamp and a damping box. The clamp is set on the top of the damping box and is used to connect with the load-bearing cable of the flexible photovoltaic bracket. The damping box has a first U-shaped chamber and a second U-shaped chamber inside. The bending plane of the first U-shaped chamber is parallel to the extension direction of the load-bearing cable, and the bending plane of the second U-shaped chamber is perpendicular to the extension direction of the load-bearing cable. Both the first U-shaped chamber and the second U-shaped chamber are filled with damping fluid. The top of the damping box has multiple through holes, which are respectively connected to the two ends of the first U-shaped chamber and the second U-shaped chamber.

[0005] Further optimization of the damper for a flexible photovoltaic bracket: The clamp includes a first clamping block and a second clamping block slidably disposed on the top of the damping box. The first clamping block has a pin on the side facing the second clamping block, and the second clamping block has a slot for inserting the pin at the corresponding position. The first clamping block and the second clamping block can slide relative to each other to realize that the pin and the slot can be engaged or disengaged.

[0006] Further optimization of the damper for a flexible photovoltaic bracket: threaded holes are provided at corresponding positions on the peripheral sidewall of the pin and the slot wall of the slot, and locking bolts are provided in the threaded holes.

[0007] Further optimization of the damper for a flexible photovoltaic support: The top of the damping box is equipped with a guide rail, the bottom of the first clamp and the second clamp are equipped with a sliding groove adapted to the guide rail, the cross-section of the guide rail is T-shaped, and the two ends of the guide rail are equipped with stops.

[0008] Further optimization of the damper for a flexible photovoltaic support: padding layers are provided on the contact surfaces of the first and second clamping blocks and the load-bearing cable.

[0009] Further optimization of the damper for a flexible photovoltaic support: the damping box has one or more first U-shaped chambers and one or more second U-shaped chambers.

[0010] Further optimization of the damper as a flexible photovoltaic support: adjacent first U-shaped chambers and adjacent second U-shaped chambers are connected by pressure equalization channels.

[0011] Further optimization of the damper as a flexible photovoltaic support: a protective mesh is provided at the through hole.

[0012] Further optimization of the damper for a flexible photovoltaic support: the cross-sections of the first U-shaped chamber and the second U-shaped chamber are circular.

[0013] Beneficial effects: This utility model achieves reliable clamping between the damping box and the load-bearing cable through a clamp set on the top of the damping box. When the load-bearing cable vibrates due to wind load, the vibration energy drives the damping fluid in the first U-shaped chamber and the second U-shaped chamber inside the damping box to undulate back and forth. The vibration energy of the load-bearing cable is dissipated through the undulating motion of the damping fluid, thereby improving the wind vibration resistance of the flexible photovoltaic support. Attached Figure Description

[0014] Figure 1 This is a schematic diagram showing the clamping state of the damper of this utility model; Figure 2 This is a schematic diagram showing the damper of this utility model in an unclamped state. Figure 3 This is a front view sectional view of the damping box of this utility model; Figure 4 This is a side sectional view of the damping box of this utility model; Figure 5 This is a top view of the damper of this utility model; The markings in the diagram are: 1. Guide rail, 2. Pad layer, 3. Second clamping block, 4. Locking bolt, 5. Clamp, 6. First clamping block, 7. Load-bearing cable, 8. Stop block, 9. Damping box, 10. Slot, 11. Threaded hole, 12. Pin, 13. Second U-shaped chamber, 14. Damping fluid, 15. First U-shaped chamber, 16. Pressure equalization channel, 17. Slide groove, 18. Protective net, 19. Through hole. Detailed Implementation

[0015] like Figure 1As shown, a damper for a flexible photovoltaic support includes a clamp 5 and a damping box 9. The clamp 5 is disposed on the top of the damping box 9 and is used to connect with the load-bearing cable 7 of the flexible photovoltaic support. The clamp 5 realizes a quick and reliable connection between the damper and the load-bearing cable 7.

[0016] like Figure 3 As shown, the damping box 9 has a first U-shaped chamber 15 and a second U-shaped chamber 13 inside, both of which are filled with damping fluid 14. When the load-bearing cable 7 vibrates, it drives the damping box 9 to move, forcing the damping fluid 14 in the U-shaped chambers to flow back and forth. During the flow, intense friction is generated inside the damping fluid 14 and between it and the inner wall of the chamber, thereby converting the mechanical energy of the load-bearing cable 7 vibration into heat energy and dissipating it into the environment, thus achieving the effect of suppressing vibration.

[0017] like Figure 4 As shown, the damping box 9 has one or more first U-shaped chambers 15 and one or more second U-shaped chambers 13. By setting the number of first U-shaped chambers 15 and second U-shaped chambers 13, the damping force of the damper in different directions can be flexibly adjusted to adapt to different engineering requirements. In this embodiment, there is one first U-shaped chamber 15 and two second U-shaped chambers 13. Adjacent first U-shaped chambers 15 and adjacent second U-shaped chambers 13 are connected by pressure equalization channels 16. The pressure equalization channels 16 keep the pressure and liquid level of the damping fluid 14 in the multiple parallel U-shaped chambers consistent, avoiding damping force fluctuations caused by uneven pressure, and making the vibration reduction effect of the damper more stable.

[0018] like Figure 5 As shown, the top of the damping box 9 has multiple through holes 19, which are connected to the two ends of the first U-shaped chamber 15 and the second U-shaped chamber 13, respectively. The through holes 19 ensure that the air pressure inside and outside the chamber is consistent, thus ensuring the smooth flow of the damping fluid 14. A protective net 18 is provided at the through holes 19. The protective net 18 ensures ventilation while effectively preventing foreign objects such as leaves from entering, maintaining the long-term cleanliness and stability of the damping system.

[0019] The bending plane of the first U-shaped chamber 15 is parallel to the extension direction of the weighing cable, and the bending plane of the second U-shaped chamber 13 is perpendicular to the extension direction of the load-bearing cable 7. The first U-shaped chamber 15 and the second U-shaped chamber 13 can dissipate the vibration energy of the load-bearing cable 7 in different directions, thus effectively suppressing multi-directional vibration in space. The cross-sections of the first U-shaped chamber 15 and the second U-shaped chamber 13 are circular, which is more conducive to the flow of the damping fluid 14.

[0020] like Figure 2As shown, the clamp 5 includes a first clamping block 6 and a second clamping block 3 slidably disposed on the top of the damping box 9. The first clamping block 6 has a pin 12 on the side facing the second clamping block 3, and the second clamping block 3 has a slot 10 for the pin 12 to be inserted at the corresponding position. The first clamping block 6 and the second clamping block 3 can slide relative to each other to realize that the pin 12 and the slot 10 can be engaged or disengaged. The two clamping blocks slide relative to each other, and the pin 12 is accurately guided into the slot 10, realizing the automatic centering of the clamping blocks and ensuring that the load-bearing cable 7 is evenly clamped.

[0021] Threaded holes 11 are provided on the peripheral side wall of the pin 12 and at corresponding positions on the groove wall of the slot 10, and locking bolts 4 are provided in the threaded holes 11. The engagement of the pin 12 and the slot 10 constitutes the first mechanical interlock, and the locking bolts 4 provide a second and robust threaded lock. The threaded lock generates a huge preload force to ensure that the clamp 5 will not loosen under long-term vibration.

[0022] The damping box 9 is provided with a guide rail 1 at the top. The bottom of the first clamping block 6 and the second clamping block 3 are provided with a sliding groove 17 that is adapted to the guide rail 1. The cooperation between the guide rail 1 and the sliding groove 17 provides precise guidance for the sliding of the clamp 5. The cross-section of the guide rail 1 is T-shaped. The cooperation between the T-shaped rail and the sliding groove 17 constitutes an anti-drop mechanism. It only allows the clamp 5 to slide along the extension direction of the guide rail 1, but it is effectively constrained in the direction perpendicular to or inclined to the guide rail 1. The guide rail 1 is provided with a stop block 8 at both ends. The stop block 8 limits the sliding limit position of the clamp 5 and prevents the clamping block from sliding off the rail.

[0023] A padding layer 2 is provided on the contact surface between the first clamping block 6 and the second clamping block 3 and the load-bearing cable 7. The padding layer 2 increases the contact area by compression deformation, thereby increasing the friction between the clamping device 5 and the load-bearing cable 7 and preventing relative slippage between the clamping device 5 and the load-bearing cable 7. The padding layer 2 serves as a buffer layer to prevent the clamping device 5 from scratching or rubbing against the load-bearing cable 7.

[0024] The method of using the damper of the flexible photovoltaic support according to this utility model is as follows: During installation, the damping box 9 is placed below the load-bearing cable 7, and the first clamping block 6 and the second clamping block 3 at the top of the damping box 9 are slid together so that the first clamping block 6 and the second clamping block 3 move towards each other until the load-bearing cable 7 is clamped and engaged. Then, the locking bolt 4 is screwed in to complete the connection between the damping box 9 and the load-bearing cable 7. When the wind load causes the load-bearing cable 7 to vibrate, the vibration energy forces the damping fluid 14 in the first U-shaped chamber 15 and the second U-shaped chamber 13 in the damping box 9 to flow back and forth. During the flow, the damping fluid 14 dissipates the vibration mechanical energy of the load-bearing cable 7 into the environment, thereby improving the wind load resistance of the flexible photovoltaic support.

Claims

1. A damper for a flexible photovoltaic support, characterized in that: The device includes a clamp (5) and a damping box (9). The clamp (5) is located on the top of the damping box (9) and is used to connect with the load-bearing cable (7) of the flexible photovoltaic bracket. The damping box (9) has a first U-shaped chamber (15) and a second U-shaped chamber (13) inside. The bending plane of the first U-shaped chamber (15) is parallel to the extension direction of the load-bearing cable (7), and the bending plane of the second U-shaped chamber (13) is perpendicular to the extension direction of the load-bearing cable (7). Both the first U-shaped chamber (15) and the second U-shaped chamber (13) are filled with damping fluid (14). The top of the damping box (9) has multiple through holes (19), which are connected to the two ends of the first U-shaped chamber (15) and the second U-shaped chamber (13) respectively.

2. The damper for a flexible photovoltaic support according to claim 1, characterized in that: The clamp (5) includes a first clamp (6) and a second clamp (3) slidably disposed on the top of the damping box (9). The first clamp (6) has a pin (12) on the side facing the second clamp (3). The second clamp (3) has a slot (10) for the pin (12) to be inserted at the corresponding position. The first clamp (6) and the second clamp (3) can slide relative to each other to realize that the pin (12) and the slot (10) can be engaged or disengaged.

3. The damper for a flexible photovoltaic support according to claim 2, characterized in that: Threaded holes (11) are provided on the peripheral side wall of the pin (12) and at corresponding positions on the groove wall of the slot (10), and locking bolts (4) are provided in the threaded holes (11).

4. The damper for a flexible photovoltaic support according to claim 2, characterized in that: The damping box (9) is provided with a guide rail (1) at the top. The bottom of the first clamping block (6) and the second clamping block (3) are provided with a sliding groove (17) that is compatible with the guide rail (1). The guide rail (1) has a T-shaped cross section and is provided with a stop block (8) at both ends.

5. The damper for a flexible photovoltaic support according to claim 2, characterized in that: A pad (2) is provided on the contact surface between the first clamping block (6) and the second clamping block (3) and the load-bearing cable (7).

6. The damper for a flexible photovoltaic support according to claim 1, characterized in that: The damping box (9) has one or more first U-shaped chambers (15) and one or more second U-shaped chambers (13).

7. The damper for a flexible photovoltaic support according to claim 6, characterized in that: The adjacent first U-shaped chambers (15) and the adjacent second U-shaped chambers (13) are connected by equalizing channels (16).

8. The damper for a flexible photovoltaic support according to claim 1, characterized in that: A protective net (18) is installed at the through hole (19).

9. The damper for a flexible photovoltaic support according to claim 1, characterized in that: The cross-sections of the first U-shaped chamber (15) and the second U-shaped chamber (13) are circular.

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