A long-span flexible cable installation structure with self-adjusting counterweight

Abstract

The present invention relates to the technical field of installation of optoelectronic combination cables or wires, and provides a self-adjusting counterweight large-span flexible cable installation structure, comprising a plurality of groups of middle columns and two groups of longitudinal end columns distributed along a preset path; component cables are connected between the plurality of groups of middle columns and the longitudinal end columns, a counterweight water container is hung on the cross-section of the component cable, the counterweight water container is connected to a water pump through a water injection pipe and a drainage pipe, and the water pump is connected to a water source through a ground water injection pipe and a drainage pipe. The present invention can automatically adjust the weight of the structure according to the different effects of wind pressure load and wind suction load on the structure, and control the vertical deformation of the component cable within the design range. The initial tension of the load-bearing cable is adjusted only by adjusting the initial weight of the counterweight to achieve the initial state shape finding of the structure. The initial weight will increase the overall weight of the structure and reduce the wind vibration effect under the action of wind. It is particularly suitable for scenes where tensioning operations are difficult, such as at sea, in fish ponds, and in mountains.

Description

Technical Field

[0001] The invention relates to a large-span flexible cable installation structure with a self-adjusting counterweight, belonging to the technical field of installation of optoelectronic combined cables or wires. Background Art

[0002] Large-span flexible photovoltaic cable supports have the advantages of large span, few piles, and good economy. Because it is difficult to pile in environments such as the sea, fish ponds, and mountains, the flexible photovoltaic cable support structure has a large span and few piles, which is particularly suitable for environments such as the sea, fish ponds, and mountains. However, there are still the following main problems for large-span flexible photovoltaic cable support structures:

[0003] (1) Large-span flexible photovoltaic cables often use a double-layer load-bearing cable + wind-resistant cable system. Under extreme wind suction conditions, the load-bearing cables stop working and become a single-layer cable system with only wind-resistant cables working. The wind vibration effect is aggravated, resulting in structural vibration amplitude and damage to photovoltaic modules.

[0004] (2) For systems with wind-resistant cables, the tension of the wind-resistant cables is large under wind suction conditions, and the cost of the anchor foundation of the wind-resistant cables is high.

[0005] (3) Prestressing is difficult in offshore, fish pond, mountainous areas, and it is difficult to control the prestressing value.

[0006] (4) In order to improve power generation efficiency and increase structural utilization, photovoltaic panels are often installed on the cable support structure. However, photovoltaic panels are light in weight, and even small wind loads can cause the photovoltaic panels to flutter in the wind. Frequent vibrations can easily cause damage to the photovoltaic modules.

[0007] (5) In mountainous areas with steep slopes or depressions, it is impossible to install wind-resistant cables at anchorages in the mid-span.

[0008] In summary, due to the particularity of large-span flexible photovoltaic brackets, traditional large-span flexible photovoltaic bracket support systems cannot adapt to complex environments, and prestressing is difficult. Summary of the invention

[0009] In order to solve the above technical problems, the present invention provides a long-span flexible cable installation structure with a self-adjusting counterweight.

[0010] The present invention is achieved through the following technical solutions.

[0011] The present invention provides a long-span flexible cable installation structure with self-adjusting counterweight, comprising a plurality of groups of middle columns and two groups of longitudinal end columns distributed along a preset path; component cables are connected between the plurality of groups of middle columns and the longitudinal end columns, a counterweight water container is hung on the cross-span middle section of the component cable, the counterweight water container is connected to a water pump through a water injection pipe and a drainage pipe, and the water pump is connected to a water source through a ground water injection pipe and a drainage pipe; the water pump is connected to a water source through a signal control system, the signal control system is connected to an upward limit displacement connector through an upward limit displacement signal wire, is connected to a downward limit displacement connector through a downward limit displacement signal wire, and is connected to a downward limit displacement connector through a signal control system. The connecting wire is connected to the signal connector, which is installed on the counterweight water container and can contact any one of the upward limit displacement connector and the downward limit displacement connector; the signal control system controls the water pump to add and release water based on the signals of the upward limit displacement connector and the downward limit displacement connector; there is a counterweight water container hook on the top of the counterweight water container, and the counterweight water container hook is hung on multiple transverse connecting tie rods through connecting parts, and the transverse connecting tie rods are connected to the component rope; the component rope is installed in multiple parallel parts, and the counterweight water containers are distributed in multiple sections on the component rope, and a group of counterweight water containers on each section are limited by the transverse connecting tie rope passing through the connecting part.

[0012] The longitudinal end columns are connected with longitudinal end diagonal tie rods for auxiliary fixation.

[0013] Lower load-bearing cables are also pulled between the multiple groups of middle columns and longitudinal end columns to resist wind pressure loads, and the lower load-bearing cables are lower than the component cables.

[0014] The two ends of the transverse connecting rope are tied and fixed on the end column of the transverse connecting system. A water container clamp is fixed on the counterweight water container at one end. A vertical slide ring is fixed on the outer end of the water container clamp. The vertical slide ring is mounted on the guide rod for longitudinal limitation. The guide rod is fixed to the end column of the transverse connecting system through the column clamp.

[0015] The side of the end column of the transverse connection system is provided with an oblique tie rod at the end of the transverse connection system for auxiliary fixing.

[0016] The column clamp is installed symmetrically up and down, the upper column clamp is fixed with an upward limit displacement signal connection spring, and the lower column clamp is fixed with a downward limit displacement signal connection spring; the lower end of the upward limit displacement signal connection spring is mounted with an upward limit displacement connector; the upper end of the downward limit displacement signal connection spring is mounted with a downward limit displacement connector; the position of the water container clamp opposite to the upward limit displacement connector and the position opposite to the downward limit displacement connector are both mounted with signal connectors.

[0017] Both ends of the upward limit displacement signal connection spring and the downward limit displacement signal connection spring are fixed with spring end plates; the signal connector, the upward limit displacement connector and the downward limit displacement connector are all mounted through insulating gaskets.

[0018] The component cable is pulled by one wire at the paired longitudinal end columns at both ends, and the middle section of the component cable is overlapped and fixed on the middle column.

[0019] The beneficial effects of the present invention are: the weight of the structure can be automatically adjusted according to the different effects of wind pressure load and wind suction load on the structure, and the vertical deformation of the component cable can be controlled within the design range. The initial tension of the load-bearing cable is adjusted only by adjusting the initial weight of the counterweight to achieve the initial state shape finding of the structure. The initial weight will increase the overall weight of the structure and reduce the wind vibration effect under the action of wind. It is particularly suitable for scenes where tensioning operations are difficult, such as at sea, in fish ponds, and in mountains. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the structure of at least one embodiment of the present invention;

[0021] Figure 2 yes Figure 1 Side view of

[0022] Figure 3 yes Figure 1 A partial front view of

[0023] Figure 4 yes Figure 1 Schematic diagram of the mounting structure of the intermediate counterweight water container;

[0024] Figure 5 yes Figure 1 Schematic diagram of circuit connection installation of the middle counterweight water container;

[0025] Figure 6 yes Figure 5 A partial enlarged schematic diagram of .

[0026] In the figure: 1-weighted water container, 2-water injection pipe and drainage pipe, 3-weighted water container connecting pipe, 4-weighted water container hook, 5-connecting piece, 6-signal switch, 7-upward limit displacement signal connection spring, 8-downward limit displacement signal connection spring, 9-signal connection wire, 10-upward limit displacement signal wire, 11-downward limit displacement signal wire, 12-signal control system, 13-water pump, 14-ground water injection pipe and drainage pipe, 15-column clamp, 1 6-spring end plate, 17-insulating gasket, 18-upward limit displacement connector, 19-downward limit displacement connector, 20-water container clamp, 21-vertical slide ring, 101-longitudinal end diagonal rod, 102-longitudinal end column, 103-middle column, 104-assembly cable, 105-lower load-bearing cable, 106-transverse connecting end column, 107-transverse connecting end diagonal rod, 108-transverse connecting cable, 109-transverse connecting support rod. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0028] A first embodiment of the present invention relates to Figures 1 to 6 The structure of a long-span flexible cable installation with self-adjusting counterweight shown in the figure comprises a plurality of groups of middle columns 103 and two groups of longitudinal end columns 102 distributed along a preset path; a component cable 104 is connected between the plurality of groups of middle columns 103 and the longitudinal end columns 102, a counterweight water container 1 is hung on the cross-span middle section of the component cable 104, the counterweight water container 1 is connected to a water pump 13 through a water injection pipe and a drainage pipe 2, and the water pump 13 is connected to a water source through a ground water injection pipe and a drainage pipe 14; the water pump 13 is connected to a water source through a ground water injection pipe and a drainage pipe 14; the water pump 13 is connected and controlled by a signal control system 12, the signal control system 12 is connected to an upward limit displacement connector 18 through an upward limit displacement signal wire 10, is connected to a downward limit displacement connector 19 through a downward limit displacement signal wire 11, and is connected to a signal connector 12 through a signal connector The conducting wire 9 is connected to the signal connector 6, which is installed on the counterweight water container 1 and can contact any one of the upward limit displacement connector 18 and the downward limit displacement connector 19; the signal control system 12 controls the water pump 13 to add and release water based on the signals of the upward limit displacement connector 18 and the downward limit displacement connector 19; there is a counterweight water container hook 4 on the top of the counterweight water container 1, and the counterweight water container hook 4 is hung on multiple transverse connecting tie rods 109 through a connecting piece 5, and the transverse connecting tie rods 109 are connected to the component rope 104; the component rope 104 is multiple and installed in parallel, and the counterweight water container 1 is distributed in multiple sections on the component rope 104, and a group of counterweight water containers 1 on each section are limited by a transverse connecting tie rope 108 passing through the connecting piece 5.

[0029] The second embodiment of the present invention is substantially the same as the first embodiment, mainly in that the longitudinal end column 102 is connected with a longitudinal end diagonal tie rod 101 for auxiliary fixation.

[0030] Furthermore, the component cables 104 correspond to the paired longitudinal end columns 102 at both ends, and the middle section of the component cables 104 is overlapped and fixed on the middle column 103 .

[0031] Furthermore, lower load-bearing cables 105 are pulled between the multiple groups of middle columns 103 and the longitudinal end columns 102 to resist wind pressure loads, and the lower load-bearing cables 105 are lower than the component cables 104 .

[0032] The third embodiment of the present invention is substantially the same as the second embodiment, mainly in that both ends of the transverse connecting rope 108 are tied and fixed to the end column 106 of the transverse connecting system, a water container clamp 20 is fixed to the counterweight water container 1 at one end, a vertical slide ring 21 is fixed to the outer end of the water container clamp 20, the vertical slide ring 21 is mounted on the guide rod for longitudinal limiting, and the guide rod is fixed to the end column 106 of the transverse connecting system through the column clamp 15.

[0033] Furthermore, a transverse connecting system end inclined rod 107 is provided on the side of the transverse connecting system end column 106 for auxiliary fixation.

[0034] Furthermore, the column clamp 15 is installed symmetrically in the upper and lower parts, the upper column clamp 15 fixes the upward limit displacement signal connection spring 7, and the lower column clamp 15 fixes the downward limit displacement signal connection spring 8; the lower end of the upward limit displacement signal connection spring 7 is mounted with the upward limit displacement connector 18; the upper end of the downward limit displacement signal connection spring 8 is mounted with the downward limit displacement connector 19; the position of the water container clamp 20 opposite to the upward limit displacement connector 18 and the position opposite to the downward limit displacement connector 19 are both mounted with signal connectors 6.

[0035] Furthermore, spring end plates 16 are fixed to both ends of the upward limit displacement signal connection spring 7 and the downward limit displacement signal connection spring 8; the signal connector 6, the upward limit displacement connector 18, and the downward limit displacement connector 19 are all mounted through insulating gaskets 17.

[0036] In general, the counterweight of the present invention is mainly a water container with adjustable water volume, and the counterweight is arranged in the middle of the span of the flexible support and hung on the load-bearing cable.

[0037] During the construction phase, the end anchoring system and all columns are assembled first, and then the component cables are tightened and anchored. A counterweight is hung at the mid-span position, and the required amount of water is injected to achieve the initial tensioning force required by the component cables. After the tensioning is completed, the photovoltaic components are installed.

[0038] When there is no wind or the wind load is small, the amount of water in the counterweight water container is the amount of water required for the initial tension force required by the design, which increases the deadweight of the structure and reduces the vibration of the photovoltaic panels under the action of wind.

[0039] When the photovoltaic bracket is displaced downward and exceeds the limit displacement under the action of a large wind pressure load, the counterweight water container automatically drains water to reduce its own weight, so that the displacement deformation under wind pressure conditions is controlled within the design range.

[0040] When the photovoltaic bracket produces an upward displacement exceeding the limit displacement under the action of a large wind suction load, the counterweight water container automatically fills with water to increase the deadweight, so that the displacement deformation under wind suction conditions is controlled within the design range. The maximum water capacity of the counterweight is determined by the weight required when the photovoltaic bracket produces an upward displacement that does not exceed the allowable displacement in the specification under the designed maximum wind suction load.

[0041] A transverse connection system is set up. Through model calculation, it is found that the transverse deformation under the action of wind suction and wind pressure is proportional and coordinated, and the maximum displacement of the entire transverse direction can be controlled by controlling the outermost transverse displacement.

[0042] Through model calculation, for a span of 30m, the basic wind pressure is 0.7kN / m 2 When (25-year return period), the photovoltaic panel angle is 15 0 When the water tank is 1.5m high, a water tank with a counterweight of 15kN can be set in the middle of the span to meet the design requirements. 3 , with a small volume, the displacement deformation under wind pressure and wind suction conditions can be controlled within the design range by using a counterweight water container. Generally, it is only necessary to hang the counterweight water container on the position of the horizontal connection tie support rod in the span through a hook, and the construction is simple. The prestressed cable is automatically tensioned only by the weight of the counterweight water container, without the need for tensioning equipment, reducing the complex prestressing tensioning work, shortening the construction period and being economical, and also solving difficult tensioning operations at sea, in fish ponds, and in mountains. The water container clamp is only set at the end column 106 of the horizontal connection system, and the number is relatively small. All other counterweight water containers are not set with clamps.

[0043] Therefore, the present invention can automatically adjust the weight of the counterweight water container according to the different effects of wind pressure load and wind suction load on the structure, and control the displacement deformation under wind pressure conditions and wind suction conditions within the design range; for scenes where tensioning operations are difficult, such as at sea, in fish ponds, and in mountains, the prestressed cables are automatically tensioned only by the weight of the counterweight water container, and no tensioning equipment is required; for mountains with steep slopes and depressions, a counterweight can be set in the middle of the span and water can be injected after the bracket is installed. The empty water container is light in weight, and a retractable water container is used, which is easy to transport and install; the counterweight water container can increase the deadweight of the large-span flexible photovoltaic structure and reduce the wind vibration effect under the action of wind.

Claims

1. A long-span flexible cable installation structure with a self-adjusting counterweight, comprising a plurality of groups of middle columns (103) and two groups of longitudinal end columns (102) distributed along a preset path, wherein the two groups of longitudinal end columns (102) are respectively arranged at both ends, characterized in that: A plurality of groups of middle columns (103) and longitudinal end columns (102) are connected to component cables (104). A counterweight water container (1) is hung on the cross-section of the component cables (104). The counterweight water container (1) is connected to a water pump (13) via a water injection pipe and a drainage pipe. The water pump (13) is connected to a water source via a water injection pipe and a drainage pipe on the ground. The water pump (13) is connected to a water source via a water injection pipe and a drainage pipe on the ground. The water pump (13) is connected to a signal control system (12). The signal control system (12) is connected to an upward limit displacement connector (18) via an upward limit displacement signal wire (10), is connected to a downward limit displacement connector (19) via a downward limit displacement signal wire (11), and is connected to a signal connector (6) via a signal connection wire (9). The signal connector (6) is mounted on the counterweight water container (1) and can contact either the upward limit displacement connector (18) or the downward limit displacement connector (19). The signal control system (12) controls the water pump (13) to add and release water based on the signals of the upward limit displacement connector (18) and the downward limit displacement connector (19); a weighted water container hook (4) is provided on the top of the weighted water container (1); the weighted water container hook (4) is hung on a plurality of transverse connecting tie rods (109) through a connecting piece (5); the transverse connecting tie rods (109) are connected to the component cable (104); the component cable (104) is two parallelly installed, the weighted water containers (1) are distributed in multiple sections on the component cable (104), and a group of weighted water containers (1) on each section are limited by a transverse connecting tie rope (108) passing through the connecting piece (5); the two ends of the transverse connecting tie rope (108) are tied and fixed on the transverse connecting tie end column (106); the transverse connecting tie end column (106) is located between the middle column (103) and the longitudinal end column (102).

2. The long-span flexible cable installation structure with self-adjusting counterweight as claimed in claim 1, characterized in that: The longitudinal end upright columns (102) are connected and fixed by longitudinal end inclined tie rods (101).

3. The long-span flexible cable installation structure with self-adjusting counterweight as claimed in claim 1, characterized in that: Lower load-bearing cables (105) are also pulled between the multiple groups of middle columns (103) and the longitudinal end columns (102) to resist wind pressure loads, and the lower load-bearing cables (105) are lower than the component cables (104).

4. The long-span flexible cable installation structure with self-adjusting counterweight as claimed in claim 1, characterized in that: A water container clamp (20) is fixed to the counterweight water container (1), a vertical slide ring (21) is fixed to the outer end of the water container clamp (20), the vertical slide ring (21) is sleeved on the guide rod for longitudinal positioning, and the guide rod is fixed to the end column (106) of the transverse connection system through the column clamp (15).

5. The long-span flexible cable installation structure with self-adjusting counterweight as claimed in claim 4, characterized in that: The side of the transverse connection system end column (106) is connected and fixed by the transverse connection system end inclined rod (107).

6. The long-span flexible cable installation structure with self-adjusting counterweight as claimed in claim 4, characterized in that: The column clamp (15) is installed symmetrically in the upper and lower parts. The upper column clamp (15) fixes the upward limit displacement signal connection spring (7), and the lower column clamp (15) fixes the downward limit displacement signal connection spring (8); the lower end of the upward limit displacement signal connection spring (7) is attached with the upward limit displacement connection device (18); the upper end of the downward limit displacement signal connection spring (8) is attached with the downward limit displacement connection device (19); and the position of the water container clamp (20) directly opposite to the upward limit displacement connection device (18) and the position directly opposite to the downward limit displacement connection device (19) are both attached with signal connection devices (6).

7. The long-span flexible cable installation structure with self-adjusting counterweight as claimed in claim 6, characterized in that: Spring end plates (16) are fixed to both ends of the upward limit displacement signal connection spring (7) and the downward limit displacement signal connection spring (8); the upward limit displacement connector (18) and the downward limit displacement connector (19) are both mounted on the spring end plates (16) via insulating gaskets (17); and the signal connector (6) is mounted on the water container clamp (20) via insulating gaskets (17).

8. The long-span flexible cable installation structure with self-adjusting counterweight as claimed in claim 1, characterized in that: The component cables (104) correspond to the paired longitudinal end columns (102) at both ends, and the middle section of the component cables (104) is overlapped and fixed on the middle column (103).

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