A shock absorbing structure for a flexible tracking bracket

Abstract

The utility model belongs to photovoltaic power generation technical field especially relates to a shock attenuation structure of flexible tracking support, including cable assembly, the even spacing of several windproof subassembly is installed on cable assembly, still be provided with the shock attenuation subassembly at the position between two windproof subassembly on cable assembly, shock attenuation subassembly includes cross pull rod, both ends of cross pull rod are fixedly connected on two subassembly cable, the middle articulates of cross pull rod has two inclined pull rods, the lower end of two inclined pull rods is commonly fixedly connected with an intermediate connecting rod, the below of intermediate connecting rod is provided with U -shaped seat, the bottom surface of U -shaped seat is fixedly connected with connecting cable, and the lower end of connecting cable is fixedly connected with shock attenuation fixing piece, the utility model discloses through setting up the shock attenuation subassembly that can follow cable rotation, makes the vibration of cable affected by strong wind to produce to be able to directly or indirectly pass through shock attenuation subassembly and give ground, reduces the influence of vibration to support life.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic power generation technology, and in particular relates to a shock-absorbing structure for a flexible tracking bracket. Background Technology

[0002] In the field of photovoltaic power generation, flexible supports rely on flexible components such as steel cables for load-bearing and have low stiffness. Under wind load, they are prone to wind-induced vibration and swaying. Long-term vibration will exacerbate steel cable fatigue, photovoltaic panel microcracks and component wear, and shorten the life of the entire support. Therefore, for flexible supports, setting up a shock-absorbing mechanism is an effective means to improve the wind resistance of the support and extend its service life.

[0003] Some companies use springs as shock-absorbing mechanisms when designing and installing flexible supports. The elastic deformation of the springs slows down the speed of vibration transmission and reduces instantaneous impact. However, the spring structure cannot directly consume vibration energy, and there is a risk of fatigue fracture after long-term use. Therefore, Chinese utility model patent application number 202122339532.6 discloses a photovoltaic support with shock absorption function. A shock absorber is set between the first main beam and the column. The liquid storage tube of the shock absorber contains a non-Newtonian fluid, which converts vibration energy into heat energy to achieve the shock absorption function.

[0004] Because ambient temperature has a significant impact on the rheological properties of non-Newtonian fluids, low-temperature solidification or high-temperature dilution will affect the performance of this type of shock-absorbing structure, resulting in poor environmental adaptability. Moreover, this type of shock-absorbing structure has high requirements for the use of seals, and long-term exposure can easily cause the seals to age and crack, leading to fluid leakage and failure. Therefore, it is necessary to send more workers to conduct regular inspections, resulting in high usage and maintenance costs. Utility Model Content

[0005] The main technical problem to be solved by this utility model is to provide a shock-absorbing structure for a flexible tracking support. By setting a shock-absorbing component that can follow the rotation of the steel cable, and connecting the shock-absorbing component to the pre-tensioned steel cable or the ground, the vibration generated by the steel cable under the influence of strong wind can be directly or indirectly transmitted to the ground through the shock-absorbing component, thereby reducing the impact of vibration on the life of the support.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A shock-absorbing structure for a flexible tracking bracket includes a steel cable assembly, a windproof component mounted on the steel cable assembly, and a shock-absorbing component. The shock-absorbing component includes a horizontal tie rod, with both ends of the horizontal tie rod fixedly connected to two component cables. Two diagonal tie rods are hinged in the middle of the horizontal tie rod, and the lower ends of the two diagonal tie rods are fixedly connected to a central connecting rod. A U-shaped seat is provided below the central connecting rod, and a connecting cable is fixedly connected to the bottom surface of the U-shaped seat. A shock-absorbing fastener is fixedly connected to the lower end of the connecting cable.

[0007] The following are further optimizations of the above technical solution by this utility model: The cable assembly includes two parallel-installed component cables and several stabilizing cables. The stabilizing cables are located below the two component cables and are arranged parallel to the component cables. The several stabilizing cables are installed coaxially in sequence, and the component cables and stabilizing cables form a triangular prism structure.

[0008] Further optimization: The diagonal tie rod and the intermediate connecting rod form a triangular frame structure, and the stabilizing cable passes through the middle of the triangular frame.

[0009] Further optimization: The U-shaped seat opens upward and forms a semi-enclosed structure for the middle connecting rod. A pulley is rolled near the top of the U-shaped seat, and the pulley is slidably connected to the upper surface of the middle connecting rod.

[0010] Further optimization: The windproof component is a triangular frame structure formed by three connecting rods connected end to end. A steel cable connector is hinged at the overlap position of every two connecting rods. The steel cable connector is fixedly connected to the corresponding component cable and stabilizing cable.

[0011] Further optimization: The middle connecting rod is arc-shaped, and its radius of curvature is adapted to the length of the diagonal tie rod.

[0012] Further optimization: The shock-absorbing fasteners are now fixedly connected to the ground.

[0013] The present invention adopts the above technical solution and has the following beneficial effects: The windproof component of this utility model has a triangular frame structure, which, when installed with the steel cable component, forms a stable triangular prism structure. This significantly improves the wind resistance of the steel cable component, prevents the steel cable from swaying disorderly in strong winds, and reduces vibration at the source.

[0014] The shock-absorbing component of this invention can be dynamically adjusted according to the rotation angle of the support. When the rotation angle of the support is small, it only transmits the vibration of the component cable; when the rotation angle of the support increases, it transmits the vibration of both the component cable and the stabilizing cable simultaneously, forming a graded shock absorption effect.

[0015] This utility model adopts a combination of "shock-absorbing components + prestressed steel strands", which has strong environmental resistance, simple structure, no risk of sealing failure, low cost of daily maintenance and repair, and no need for frequent inspections, thus reducing the labor intensity of workers.

[0016] The shock-absorbing fastener of this utility model adopts multiple solutions to cover different scenarios such as "single support / multiple support, horizontal / longitudinal, conventional / strong vibration", ensuring that it can efficiently absorb vibration energy in different installation environments and avoid the impact of vibration on the support, steel cable and photovoltaic panel.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a perspective view of the overall structure of Embodiment 1 of this utility model; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a perspective view of the end support assembly of Embodiment 1 of this utility model; Figure 4 This is a perspective view of the intermediate support component in Embodiment 1 of this utility model; Figure 5 This is a perspective view of the overall structure of Embodiment 2 of this utility model; Figure 6 This is a partial perspective view of the overall structure of Embodiment 3 of this utility model.

[0019] In the diagram: 1. End support assembly; 101. End column; 102. End inclined beam; 1021. First main beam; 1022. Rotation shaft; 1023. First rotating plate; 1024. First steel cable connecting plate; 103. End support seat; 104. End polymer block; 2. Intermediate support assembly; 201. Intermediate column; 202. Intermediate inclined beam; 2021. Second main beam; 2022. Rotating beam; 2023. Second... 1. Rotating plate; 2. Second steel cable connecting plate; 2. Middle rotating ring; 2. Upper polymer block; 2. Lower polymer block; 3. Steel cable assembly; 3. Component cable; 3. Stabilizing cable; 4. Electric push rod; 5. Windproof assembly; 6. Shock-absorbing assembly; 6. Horizontal tie rod; 6. Diagonal tie rod; 6. Middle connecting rod; 6. U-shaped seat; 6. Pulley; 6. Connecting cable; 7. Shock-absorbing fixing component. Detailed Implementation

[0020] Example 1: As Figure 1 As shown, a shock-absorbing structure for a flexible tracking bracket includes a steel cable assembly 3. Several windproof components 5 are evenly installed on the steel cable assembly 3 to connect the middle part of the steel cable assembly 3 into a whole. A shock-absorbing component 6 is also provided between two windproof components 5 on the steel cable assembly 3. The windproof components 5 and the shock-absorbing component 6 work together to improve the overall wind resistance of the bracket and increase its service life.

[0021] The steel cable assembly 3 includes two parallel-installed component cables 301 and several stabilizing cables 302. The stabilizing cables 302 are located below the two component cables 301 and are arranged parallel to the component cables 301. The several stabilizing cables 302 are installed coaxially in sequence, and the component cables 301 and stabilizing cables 302 form a triangular prism structure.

[0022] like Figure 1As shown, the windproof component 5 is a triangular frame structure formed by three connecting rods connected end to end. A steel cable connector is hinged at the position where every two connecting rods overlap. The steel cable connector is fixedly connected to the corresponding component cable 301 and stabilizing cable 302, so that the component cable 301 and stabilizing cable 302 form a stable triangular prism structure, which improves the structural stability and wind resistance of the support.

[0023] like Figure 2 As shown, the shock absorption component 6 includes a horizontal tie rod 601. The two ends of the horizontal tie rod 601 are fixedly connected to two component cables 301. Two diagonal tie rods 602 are hinged in the middle of the horizontal tie rod 601. The two diagonal tie rods 602 extend downward and their lower ends are fixedly connected to an intermediate connecting rod 603. The diagonal tie rods 602 and the intermediate connecting rod 603 form a triangular frame structure, and the stabilizing cable 302 passes through the middle of the triangular frame.

[0024] The intermediate connecting rod 603 is arc-shaped, and its radius of curvature is adapted to the length of the diagonal tie rod 602. A U-shaped seat 604 is provided below the intermediate connecting rod 603. The U-shaped seat 604 opens upward and forms a semi-enclosed structure for the intermediate connecting rod 603. A pulley 605 is rolled near the top of the U-shaped seat 604, and the pulley 605 is slidably connected to the upper surface of the intermediate connecting rod 603.

[0025] A connecting cable 606 is fixedly connected to the bottom surface of the U-shaped seat 604. A shock-absorbing fastener 7 is fixedly connected to the lower end of the connecting cable 606. The shock-absorbing fastener 7 is fixedly connected to the ground. In this way, the vibration generated by the steel cable assembly 3 is transmitted to the connecting cable 606 in sequence through the horizontal tie rod 601, the diagonal tie rod 602, the intermediate connecting rod 603, the pulley 605, and the U-shaped seat 604. Then, the connecting cable 606 transmits the vibration to the shock-absorbing fastener 7, forming a complete force transmission path and realizing the shock absorption function.

[0026] In this embodiment, the connecting cable 606 can be a flexible structure or a rigid structure. In actual design and installation, different structures are selected for installation based on the wind force at the installation location, the range of solar altitude angle, and the complexity of the installation environment.

[0027] In this embodiment, the shock-absorbing fastener 7 is a transverse shock-absorbing cable. The transverse shock-absorbing cable is arranged parallel to the component cable 301, and its two ends are fixedly connected to the two end support components 1 respectively. The lower end of the connecting cable 606 is fixedly connected to the transverse shock-absorbing cable. The transverse shock-absorbing cable is made of prestressed steel strand or steel wire rope, and absorbs a portion of the vibration energy through the elastic deformation of the transverse shock-absorbing cable.

[0028] like Figure 1As shown, an end support component 1 is fixedly installed at each end of the steel cable assembly 3. The two end support components 1 are installed symmetrically. Several intermediate support components 2 are also arranged between the two end support components 1. The number of intermediate support components 2 is at least one. In the specific design process, the number can be increased according to the overall length of the flexible support. Photovoltaic panels are installed on the flexible support to receive sunlight and generate electricity.

[0029] like Figure 3 As shown, the end support assembly 1 includes a vertically installed end column 101. An end inclined beam 102 is rotatably installed on the top of the end column 101. An electric push rod 4 is hinged to one end of the end inclined beam 102. The end of the electric push rod 4 away from the end inclined beam 102 is hinged to the end column 101. The telescopic end of the electric push rod 4 extends or retracts, driving the end inclined beam 102 to rotate on the end column 101, thereby adjusting the angle of the entire flexible support.

[0030] Specifically, the top of the end column 101 is fixedly connected to two parallel and spaced end support seats 103. Each end support seat 103 is fixedly installed with an end polymer block 104. The end inclined beam 102 includes a first main beam 1021. A rotating shaft 1022 is fixedly connected to the middle position of the first main beam 1021. The rotating shaft 1022 is installed through the end polymer block 104. The rotation of the end inclined beam 102 is realized through the rotational cooperation between the rotating shaft 1022 and the end polymer block 104.

[0031] like Figure 4 As shown, the structure of the intermediate support component 2 is similar to that of the end support component 1, including a vertically installed intermediate column 201. An intermediate inclined beam 202 is rotatably installed on the top of the intermediate column 201. One end of the intermediate inclined beam 202 is also hinged to an electric push rod 4. The end of the electric push rod 4 away from the intermediate inclined beam 202 is hinged to the intermediate column 201. The telescopic end of the electric push rod 4 extends or retracts, driving the intermediate inclined beam 202 to rotate on the intermediate column 201, thus assisting the end support component 1 in adjusting the bracket angle.

[0032] Specifically, the top of the intermediate column 201 is fixedly connected to two parallel intermediate support seats, and the top of each intermediate support seat is fixedly installed with an intermediate rotating ring 203. The intermediate inclined beam 202 includes a second main beam 2021, and a rotating beam 2022 is fixedly connected to the middle position of the second main beam 2021. The rotating beam 2022 passes through the two intermediate rotating rings 203. The upper and lower sides of the rotating beam 2022 are respectively fixedly installed with an upper polymer block 204 and a lower polymer block 205 at positions corresponding to the intermediate rotating rings 203. The upper polymer block 204 and the lower polymer block 205 are provided with sliding grooves on the side away from the rotating beam 2022, and are slidably connected to the intermediate rotating rings 203 through the sliding grooves, thereby realizing the rotation of the intermediate inclined beam 202 at the top of the intermediate column 201.

[0033] In this embodiment, the end polymer block 104, the upper polymer block 204, and the lower polymer block 205 are made of ultra-high molecular weight polyethylene or other materials in the prior art that have both wear-resistant and self-lubricating properties, thereby effectively avoiding wear during use.

[0034] A first rotating plate 1023 is fixedly connected to one end of the rotating shaft 1022, and a second rotating plate 2023 is fixedly connected to each end of the rotating beam 2022. Mounting holes are provided near the bottom of both the first rotating plate 1023 and the second rotating plate 2023, and the two mounting holes are concentrically arranged. A first steel cable connecting plate 1024 is fixedly connected to each end of the first main beam 1021, and a second steel cable connecting plate 2024 is fixedly connected to each end of the second main beam 2021. Mounting holes are provided at corresponding positions on the first steel cable connecting plate 1024 and the second steel cable connecting plate 2024. During installation, ensure that the first rotating plates 1023 of the two end support components 1 face inward, and that the mounting holes on the first rotating plate 1023 and the second rotating plate 2023, the first steel cable connecting plate 1024 and the second steel cable connecting plate 2024 are aligned.

[0035] The two ends of the component cable 301 are fixedly connected to the first steel cable connecting plate 1024 located on the same side of the two end support components 1, and the middle part of the component cable 301 passes through the second steel cable connecting plate 2024 located on the same side of the intermediate support component 2 and is fixedly connected to it.

[0036] In this embodiment, the flexible support is provided with an intermediate support component 2, and a stabilizing cable 302 is installed between the two end support components 1 and the intermediate support component 2. One end of the stabilizing cable 302 is fixedly installed at the lower end of the first rotating plate 1023, and the other end is installed at the lower end of the second rotating plate 2023 near the side of the first rotating plate 1023. The two stabilizing cables 302 are installed coaxially in sequence. In addition to this embodiment, when the flexible support is provided with multiple intermediate support components 2, a stabilizing cable 302 is also installed between two adjacent intermediate support components 2.

[0037] like Figure 1 As shown, the two end support components 1 are also provided with inclined cables on their outer sides. The inclined cables, the ground and the end support components 1 form a triangular stable structure, which improves the overall stability of the support. In this embodiment, the component cable 301, the stabilizing cable 302 and the inclined cable are all made of prestressed steel strands. By applying tension in advance during installation, the tension generated by the load during use is offset, thereby improving the overall load-bearing capacity and service life of the support.

[0038] Working principle: Multiple electric push rods 4 work together to drive the end inclined beam 102 and the middle inclined beam 202 to rotate, which in turn drives the steel cable assembly 3 and the support to rotate as a whole to track the sunlight and meet the needs of photovoltaic power generation. When the rotation angle is relatively small, the frontal windward area of ​​the photovoltaic panel is also small, and the vibration of the flexible support caused by strong wind is small. At this time, the stabilizing cable 302 moves in the middle of the triangular frame formed by the inclined tie rod 602 and the middle connecting rod 603. Only the vibration on the component cable 301 is transmitted downward to the damping fixing component 7 through the damping assembly 6.

[0039] As the rotation angle gradually increases, the area of ​​the photovoltaic panel facing the wind also gradually increases. The vibration of the flexible support caused by the strong wind increases. At this time, the stabilizing cable 302 comes into contact with one of the tie rods 602. The vibration of the stabilizing cable 302 can also be transmitted to the damping fixing component 7 through the damping component 6, which improves the damping effect. As the rotation angle continues to increase, the stabilizing cable 302 drives the tie rod 602 to rotate around the hinge axis at the top, so that the stabilizing cable 302 is always in contact with the tie rod 602, ensuring that the vibration transmission path is not broken.

[0040] As the stabilizing cable 302 drives the diagonal tie rod 602 to rotate, the intermediate connecting rod 603 moves synchronously. Since the bottom of the U-shaped seat 604 is fixedly connected to the shock-absorbing fixing component 7 through the connecting cable 606, the pulley 605 is dragged in the opposite direction and slides on the intermediate connecting rod 603.

[0041] Example 2: A shock-absorbing structure for a flexible tracking bracket based on Example 1 above. The difference between Example 2 and Example 1 is that, as... Figure 5As shown, the damping fastener 7 is a longitudinal damping cable. The longitudinal damping cable is set perpendicularly to the component cable 301. A single longitudinal damping cable can be installed on multiple flexible supports. The connecting cable 606 is fixedly connected to the longitudinal damping cable.

[0042] The longitudinal damping cable is fixedly installed with mounting columns at both ends, and the lower end of the mounting columns is fixedly connected to the ground. The longitudinal damping cable is made of prestressed steel strand or steel wire rope, and absorbs part of the vibration energy through the elastic deformation of the longitudinal damping cable.

[0043] Example 3: A shock-absorbing structure for a flexible tracking bracket based on Example 1 above. The difference between Example 3 and Example 1 is that, as... Figure 6 As shown, the shock-absorbing fixing component 7 is a shock-absorbing column. Each shock-absorbing component 6 has a corresponding shock-absorbing column below it. The lower end of the shock-absorbing column is fixedly connected to the ground, and the upper end is fixedly connected to the connecting cable 606.

[0044] For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of this utility model, based on the teachings of this utility model, still fall within the protection scope of this utility model.

Claims

1. A shock-absorbing structure for a flexible tracking bracket, comprising a steel cable assembly (3), wherein a windproof assembly (5) is installed on the steel cable assembly (3), characterized in that: The steel cable assembly (3) is also provided with a shock-absorbing assembly (6). The shock-absorbing assembly (6) includes a horizontal tie rod (601). The two ends of the horizontal tie rod (601) are fixedly connected to two component cables (301). The middle of the horizontal tie rod (601) is hinged with two diagonal tie rods (602). The lower ends of the two diagonal tie rods (602) are fixedly connected to a middle connecting rod (603). A U-shaped seat (604) is provided below the middle connecting rod (603). A connecting cable (606) is fixedly connected to the bottom surface of the U-shaped seat (604). A shock-absorbing fastener (7) is fixedly connected to the lower end of the connecting cable (606).

2. The shock-absorbing structure of the flexible tracking bracket according to claim 1, characterized in that: The steel cable assembly (3) includes two parallel-installed component cables (301) and several stabilizing cables (302). The stabilizing cables (302) are located below the two component cables (301) and are arranged parallel to the component cables (301). The several stabilizing cables (302) are installed coaxially in sequence, and the component cables (301) and stabilizing cables (302) form a triangular prism structure.

3. The shock-absorbing structure of the flexible tracking bracket according to claim 2, characterized in that: The diagonal tie rod (602) and the intermediate connecting rod (603) form a triangular frame structure, and the stabilizing cable (302) passes through the middle of the triangular frame.

4. The shock-absorbing structure of the flexible tracking bracket according to claim 3, characterized in that: The U-shaped seat (604) opens upward and forms a semi-enclosed structure with the intermediate connecting rod (603). A pulley (605) is rolled near the top of the U-shaped seat (604), and the pulley (605) is slidably connected to the upper surface of the intermediate connecting rod (603).

5. The shock-absorbing structure of the flexible tracking bracket according to claim 4, characterized in that: The windproof component (5) is a triangular frame structure formed by three connecting rods connected end to end. A steel cable connector is hinged at the position where two connecting rods overlap. The steel cable connector is fixedly connected to the corresponding component cable (301) and stabilizing cable (302).

6. The shock-absorbing structure of the flexible tracking bracket according to claim 5, characterized in that: The intermediate connecting rod (603) is arc-shaped, and its radius of curvature is adapted to the length of the tie rod (602).

7. The shock-absorbing structure of a flexible tracking bracket according to claim 6, characterized in that: The shock-absorbing fastener (7) is fixedly connected to the ground.

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