Photovoltaic flexible support bidirectional anchor beam tensioning adjustable balancing device and installation method

Abstract

The present invention discloses a photovoltaic flexible support bidirectional anchor beam tensioning adjustable balancing device and an installation method. It comprises a two-hole special anchor, a steel strand, a two-ear adjustable anchor and a steel beam clamp, one end of the steel strand is connected to the load-bearing cable of the flexible support system through the two-hole special anchor, and the other end of the steel strand is connected to the steel beam clamp through the two-ear adjustable anchor, and the steel beam clamp is fixed on the middle support. The present invention ingeniously transfers the unbalanced force that exists briefly during the construction process to the load-bearing cable through the steel beam, and the load-bearing cable finally transfers the unbalanced force to the end supports at both ends.

Description

Technical Field

[0001] The invention belongs to the technical field of solar energy deployment, and in particular relates to a photovoltaic flexible support bidirectional anchor cable beam tensioning adjustable balancing device and an installation method. Background Art

[0002] Photovoltaic power generation is one of the most effective forms of developing and utilizing solar energy resources today. Among them, photovoltaic brackets as the supporting structure of photovoltaic modules are very important. As a new type of photovoltaic bracket, flexible brackets have the advantages of large span, high clearance, wide adaptability and saving land resources compared with traditional fixed brackets. In recent years, they have been widely used in engineering. In most of the flexible photovoltaic bracket systems for fishery-photovoltaic complementary suspension cables, the piles are small in size and high above the ground. In addition to the load-bearing upper cables required for component installation, stabilizing cables need to be installed at the bottom. Compared with the load-bearing cables, the stabilizing cables need to be disconnected at each middle support. In addition, there must be a certain order of tensioning of the stabilizing cables, which leads to the existence of unbalanced forces during the tensioning process, which makes the middle pile have a certain risk of cracking. At present, the commonly used solution in engineering is to adopt graded balanced tensioning. This tensioning process is relatively cumbersome, time-consuming and labor-intensive, which to a certain extent restricts the promotion and application of flexible bracket systems in engineering. Therefore, how to use a convenient and efficient way to maintain the balance on both sides of the middle support during the tensioning of the stabilizing cables is a key engineering problem that needs to be solved in the construction and installation of flexible photovoltaic brackets. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the above-mentioned background technology and to provide a photovoltaic flexible bracket bidirectional anchor beam tensioning adjustable balancing device and an installation method.

[0004] The technical solution adopted by the present invention is: a photovoltaic flexible support bidirectional anchor beam tensioning adjustable balancing device, including a two-hole special anchor, a steel strand, a double-ear adjustable anchor and a steel beam clamp, one end of the steel strand is connected to the load-bearing cable of the flexible support system through the two-hole special anchor, and the other end of the steel strand is connected to the steel beam clamp through the double-ear adjustable anchor, and the steel beam clamp is fixed on the middle support.

[0005] A further preferred structure is that the two-hole special anchor comprises a rectangular block body, one side of the two-hole special anchor is provided with a groove and a circular hole at intervals, the other side opposite to the two-hole special anchor is provided with a groove and a circular hole at intervals, the groove on one side of the two-hole special anchor and the groove on the other side opposite to it are connected in the two-hole special anchor, the circular hole on one side of the two-hole special anchor and the circular hole on the other side opposite to it are connected in the two-hole special anchor, the groove and the circular hole are both provided with clamps for accommodating steel strands or load-bearing cables, the groove is used to accommodate load-bearing cables, the circular hole is used to accommodate steel strands, and the clamp is an integral conical sleeve structure composed of three pieces or two pieces with one end larger and the other end smaller.

[0006] A further preferred structure is that the steel strand passes through the round hole on one side of the two-hole special anchor and passes out from the round hole on the other side of the two-hole special anchor; the load-bearing cable passes through the groove on one side of the two-hole special anchor and passes out from the groove on the other side of the two-hole special anchor.

[0007] A further preferred structure is that the apertures of the grooves and the circular holes are adapted to the specifications of the load-bearing cables and the steel strands, the grooves and the circular holes are tapered holes that are larger at one end and smaller at the other end, and the tapered holes of the grooves and the circular holes are in opposite directions (i.e., the large and small ends of the tapered holes are in opposite directions).

[0008] A further preferred structure is that the middle support includes a bottom column and an upper middle steel beam, the column and the middle steel beam are vertically connected, the steel beam clamp is fixed to the middle steel beam by connecting bolts, one end of the double-ear adjustable anchor is connected to the steel strand, and the other end of the double-ear adjustable anchor is connected to the side wall of the steel beam clamp.

[0009] In the above solution, the double-ear adjustable anchor is an existing structure.

[0010] In a further preferred structure, the two sides of the two-hole special anchor are provided with limit members to prevent the clamp from falling off, and the limit members and the two-hole special anchor are fixed by connecting bolts.

[0011] In a further preferred structure, the limiting member is in the shape of a plate, and a U-shaped groove matching the groove and the circular hole is provided on the limiting member.

[0012] In a further preferred structure, both ends of the load-bearing cable are respectively fixed on the end steel beam, and one side of the end steel beam is connected to the inclined cable; a stabilizing cable is connected between the middle steel beam and the end steel beam, and the stabilizing cable is connected to the middle steel beam through an anchor.

[0013] A method for installing a photovoltaic flexible bracket bidirectional anchor beam tensioning adjustable balancing device, comprising the following steps: firstly, installing a double-ear adjustable anchor on one end of a steel strand on the ground, and connecting the other end to a round hole on one side of a two-hole special anchor, then fixing a steel beam clamp on a middle steel beam by bolt connection, and then installing and connecting one end of the steel strand with the double-ear adjustable anchor to the steel beam clamp, and embedding a load-bearing cable into one side of a slotted two-hole special anchor at the other end, and preventing the clamp from falling off by installing a limit piece, and finally adjusting the double-ear adjustable anchor to put the steel strand in a tensioned state, thereby completing the installation of the entire balancing device;

[0014] When the stabilizing cable is tensioned, the tensioning force acting on one side of the middle steel beam drives the steel strand to be stressed through the steel beam clamp. After being stressed, the steel strand transfers the load to one side of the round hole of the two-hole special anchor, and then transfers it to the load-bearing cable through the slotted side of the two-hole special anchor. The load-bearing cable finally transfers the unbalanced force to the end support where the end steel beam is located.

[0015] The beneficial effects of the present invention are: when the flexible photovoltaic support system is operating normally, the design value of the horizontal resistance of the middle pile (middle support) is often low; and during the construction and installation process, due to the construction process, the middle pile will inevitably bear a large unbalanced force, but the cost will increase significantly if the structural performance of the middle pile foundation is enhanced; if a graded balanced tensioning scheme is adopted, it will be more cumbersome, time-consuming and labor-intensive. The present invention cleverly transfers the unbalanced force that exists briefly during the construction process to the load-bearing cable through the steel beam, and the load-bearing cable eventually transfers the unbalanced force to the end supports at both ends. The end supports have a strong horizontal resistance when designed, and the problem can be solved well without additional costs and tensioning times. Taking a certain fish-light complementary flexible support project as an example, if the existing graded balanced tensioning scheme is adopted, the stabilizing cable needs to be tensioned in 6 levels to ensure the safety and stability of the middle pile. After the balancing device of the present invention is adopted, the stabilizing cable can be tensioned in place at one time, which improves the tensioning efficiency of the stabilizing cable construction by nearly 6 times and reduces the installation cost of the stabilizing cable of the flexible support by nearly 84%. In addition, the present invention only includes two-hole special anchors, limiters, steel strands, double-ear adjustable anchors, steel beam clamps and other components. It has a simple and compact structure, low cost, easy disassembly and is conducive to reuse, and also avoids the intervention of other auxiliary equipment. The present invention uses double-ear adjustable anchors and steel strands, which can measure the tensioning force of the steel strands in real time, and increase or decrease the pre-tensioning force of the steel strands by adjusting the anchors, thereby ensuring the balance of horizontal forces on both sides of the center pile when the stabilizing cable is tensioned. The entire balancing device has a simple structure, is easy and quick to install, and has clear force transmission. The above beneficial effect statements show that this solution has good engineering practical prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view schematic diagram of the flexible support balancing device during the tensioning process;

[0017] Figure 2 It is a top view of the flexible support balancing device during the tensioning process;

[0018] Figure 3 A three-dimensional schematic diagram of the flexible support balancing device during the tensioning process;

[0019] Figure 4 It is a three-dimensional schematic diagram of the two-hole special anchor and its limiter;

[0020] Figure 5 This is an exploded view of the two-hole special anchor and its limiter;

[0021] Figure 6 This is a schematic diagram of the other side of the two-hole special anchor and its limiter;

[0022] Figure 7 It is a three-dimensional schematic diagram of the steel beam hoop;

[0023] Figure 8It is a three-dimensional schematic diagram of the entire flexible support system;

[0024] In the figure: 1. Two-hole special anchor (1.1. groove, 1.2. round hole); 2. Steel strand; 3. Load-bearing cable; 4. Stabilizing cable; 5. Column; 6. Middle steel beam; 7. End steel beam; 8. Inclined cable; 9. Double-ear adjustable anchor; 10. Steel beam clamp; 11. Connecting bolt; 12. Anchor; 13. Clamp; 14. Limiting piece (14.1. U-shaped groove). DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not constitute a limitation on the present invention.

[0026] like Figure 1-3 As shown, the present invention includes a two-hole special anchor 1, a steel strand 2, a double-ear adjustable anchor 9 and a steel beam clamp 10. One end of the steel strand 2 is connected to the load-bearing cable 3 of the flexible support system through the two-hole special anchor 1, and the other end of the steel strand 2 is connected to the steel beam clamp 10 through the double-ear adjustable anchor 9. The steel beam clamp 10 is fixed on the middle support.

[0027] like Figure 4-5 As shown, the two-hole special anchor 1 includes a rectangular block body, one side of the two-hole special anchor 1 is provided with a groove 1.1 and a circular hole 1.2, the other side of the two-hole special anchor 1 is provided with a groove 1.1 and a circular hole 1.2, the groove 1.1 on one side of the two-hole special anchor 1 and the groove 1.1 on the other side opposite to it are connected in the two-hole special anchor 1, the circular hole 1.2 on one side of the two-hole special anchor 1 and the circular hole 1.2 on the other side opposite to it are connected in the two-hole special anchor 1, the groove 1.1 and the circular hole 1.2 are both provided with a clamp 13 for accommodating the steel strand 2 or the load-bearing cable 3, the groove 1.1 is used to accommodate the load-bearing cable 3, the circular hole 1.2 is used to accommodate the steel strand 2, and the clamp 13 is an integral conical sleeve structure composed of three pieces or two pieces with one end larger and the other end smaller.

[0028] The steel strand 2 passes through the round hole 1.2 on one side of the two-hole special anchor 1 and passes out from the round hole 1.2 on the other side of the two-hole special anchor 1; the load-bearing cable 3 passes through the groove 1.1 on one side of the two-hole special anchor 1 and passes out from the groove 1.1 on the other side of the two-hole special anchor 1.

[0029] The apertures of the groove 1.1 and the circular hole 1.2 are adapted to the specifications of the load-bearing cable 3 and the steel strand 2. Both the groove 1.1 and the circular hole 1.2 are tapered holes with one end larger than the other end, and the tapered directions of the groove 1.1 and the circular hole 1.2 are opposite.

[0030] Combination Figure 6As shown, the middle support includes a column 5 at the bottom and a middle steel beam 6 at the top, the column 5 and the middle steel beam 6 are vertically connected, the steel beam clamp 10 is fixed to the middle steel beam 6 by connecting bolts, one end of the double-ear adjustable anchor 9 is connected to the steel strand 2, and the other end of the double-ear adjustable anchor 9 is connected to the side wall of the steel beam clamp 10. Among them, the double-ear adjustable anchor 9 is an existing structure.

[0031] like Figure 4-5 As shown, the two-hole special anchor 1 has limiters 14 on both sides to prevent the clamp 13 from falling off, and the limiters 14 and the two-hole special anchor 1 are fixed by connecting bolts 11.

[0032] The limiting member 14 is in the shape of a plate and is provided with a U-shaped groove 14.1 matching the groove 1.1 and the circular hole 1.2.

[0033] like Figure 7 As shown, both ends of the load-bearing cable 3 are respectively fixed on the end steel beam 7, and one side of the end steel beam 7 is connected to the inclined cable 8.

[0034] A stabilizing cable 4 is connected between the middle steel beam 6 and the end steel beam 7 , and the stabilizing cable 4 is connected to the middle steel beam 6 through an anchor 12 .

[0035] The tensioning force directions of the steel strands on both sides of the two-hole special anchor 1 are opposite.

[0036] The double-ear adjustable anchor 9 can be used to adjust the pre-tension of the steel strand 2, and can ensure that the steel strand is always in a taut state during the stable cable tensioning process.

[0037] In order to meet the strength and deformation requirements, the thickness of the steel beam hoop 10 can be 8 to 10 mm.

[0038] The present invention is used for maintaining the balance of the middle column during the tensioning process of the flexible support stabilizing cable, so as to prevent the middle column from being damaged due to excessive deformation.

[0039] The specific construction and installation process of the present invention is: first, install a double-ear adjustable anchor 9 on one end of the steel strand 2 on the ground, and connect the other end to the round hole 1.2 (anchor hole) on one side of the two-hole special anchor 1, then fix the steel beam clamp 10 on the middle steel beam 6 by bolt connection, and then install and connect one end of the steel strand 2 with the double-ear adjustable anchor 9 to the steel beam clamp 10, and embed the load-bearing cable 3 into one side of the slot 1.1 of the two-hole special anchor 1 at the other end, and prevent the clamp 13 from falling off by installing the limit piece 14, finally, adjust the double-ear adjustable anchor 9 to make the steel strand 2 in a tensioned state, thereby completing the installation of the entire balancing device.

[0040] When the stabilizing cable 4 is tensioned, the tensioning force acting on one side of the middle steel beam 6 drives the steel strand 2 to be stressed through the steel beam clamp 10. After being stressed, the steel strand 2 transfers the load to one side of the circular hole 1.2 of the two-hole special anchor 1, and then transfers it to the load-bearing cable 3 through the slot 1.1 of the two-hole special anchor 1. The load-bearing cable 3 finally transfers the unbalanced force to the end support where the end steel beam 7 is located. In addition, during the tensioning process, the unbalanced force on the middle steel beam 6 can be controlled by adjusting the double-ear adjustable anchor 9 by monitoring the changes in the cable force of the steel strand 2. The entire balancing device has a simple structure. When the stabilizing cable 4 is tensioned on one side of the middle steel beam 6, it can better balance the force on the middle support and prevent the middle support foundation from being subjected to excessive unbalanced force, which may cause its deformation and cracking.

[0041] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A photovoltaic flexible support bidirectional anchor beam tensioning adjustable balancing device, characterized in that: It includes a two-hole special anchor, a steel strand, a double-ear adjustable anchor and a steel beam clamp. One end of the steel strand is connected to the load-bearing cable of the flexible support system through the two-hole special anchor, and the other end of the steel strand is connected to the steel beam clamp through the double-ear adjustable anchor. The steel beam clamp is fixed on the middle support. The two-hole special anchor comprises a rectangular block body, one side of the two-hole special anchor is provided with a slot and a circular hole at intervals, the other side of the two-hole special anchor is provided with a slot and a circular hole at intervals, the slot on one side of the two-hole special anchor and the slot on the other side opposite to it are connected in the two-hole special anchor, the circular hole on one side of the two-hole special anchor and the circular hole on the other side opposite to it are connected in the two-hole special anchor, the slot and the circular hole are both provided with a clamp for accommodating steel strands or load-bearing cables, the slot is used to accommodate the load-bearing cables, and the circular hole is used to accommodate the steel strands, and the clamp is an integral conical sleeve structure composed of three pieces or two pieces with one end larger and the other end smaller; The steel strand passes through the round hole on one side of the two-hole special anchor and passes through the round hole on the other side of the two-hole special anchor; the load-bearing cable passes through the groove on one side of the two-hole special anchor and passes through the groove on the other side of the two-hole special anchor; The diameters of the slots and round holes are adapted to the specifications of the load-bearing cables and steel strands. Both the slots and round holes are tapered holes with one end larger than the other end, and the directions of the tapered holes of the slots and round holes are opposite. The middle support comprises a column at the bottom and a middle steel beam at the top, the column and the middle steel beam are vertically connected, and the steel beam clamp is fixed to the middle steel beam by connecting bolts; The unbalanced force that exists briefly during the construction process is transmitted to the load-bearing cable through the steel beam, and the load-bearing cable finally transmits the unbalanced force to the end supports at both ends.

2. The photovoltaic flexible support bidirectional anchor beam tensioning and adjustable balancing device according to claim 1 is characterized in that: One end of the double-ear adjustable anchor is connected to the steel strand, and the other end of the double-ear adjustable anchor is connected to the side wall of the steel beam hoop.

3. The photovoltaic flexible support bidirectional anchor beam tensioning and adjustable balancing device according to claim 1 is characterized in that: Limiting pieces are provided on both sides of the two-hole special anchor to prevent the clamp from falling off, and the limiting pieces and the two-hole special anchor are fixed by connecting bolts.

4. The photovoltaic flexible support bidirectional anchor beam tensioning adjustable balancing device according to claim 3 is characterized in that: The limiting member is in the shape of a plate, and is provided with a U-shaped groove matching the groove and the round hole.

5. The photovoltaic flexible support bidirectional anchor beam tensioning adjustable balancing device according to claim 1 is characterized in that: The two ends of the load-bearing cable are respectively fixed on the end steel beam, and one side of the end steel beam is connected to the inclined cable; a stabilizing cable is connected between the middle steel beam and the end steel beam, and the stabilizing cable is connected to the middle steel beam through an anchor.

6. The installation method of the photovoltaic flexible support bidirectional anchor beam tensioning adjustable balancing device according to claim 1 is characterized in that: The method comprises the following steps: firstly, a double-ear adjustable anchor is installed on one end of the steel strand on the ground, and the other end is connected to a round hole on one side of a two-hole special anchor, and then the steel beam clamp is fixed to the middle steel beam by bolt connection, and then one end of the steel strand with the double-ear adjustable anchor is installed and connected to the steel beam clamp, and one side of the slot of the two-hole special anchor at the other end is embedded in the installation load-bearing cable, and the clamp is prevented from falling off by installing a limit piece, and finally the steel strand is put in a tensioned state by adjusting the double-ear adjustable anchor, thereby completing the installation of the entire balancing device; When the stabilizing cable is tensioned, the tensioning force acting on one side of the middle steel beam drives the steel strand to be stressed through the steel beam clamp. After being stressed, the steel strand transfers the load to one side of the round hole of the two-hole special anchor, and then transfers it to the load-bearing cable through the slotted side of the two-hole special anchor. The load-bearing cable finally transfers the unbalanced force to the end support where the end steel beam is located.

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