Rear-mounted flexible photovoltaic support inhaul cable force measuring device

Abstract

The utility model discloses a rear-mounted flexible photovoltaic support inhaul cable force measuring device which comprises a steel pipe support, a perforated steel plate, a pressure ring type dynamometer I, a clamping piece anchorage device II and a jack. The steel pipe support penetrates through the inhaul cable to be sleeved outside the installed clamping piece anchorage device I, and one end of the steel pipe support abuts against the installed anchor bearing plate. The perforated steel plate penetrates through the inhaul cable to be supported on the other end face of the steel pipe support. The pressure ring type dynamometer I penetrates through the inhaul cable and is supported on the perforated steel plate; the jack is used for drawing the inhaul cable and providing locking force for the clamping piece anchorage device II; and the clamping piece anchorage device II penetrates through the inhaul cable, locks the inhaul cable under the action of the locking force and is supported on the pressure ring type dynamometer I. According to the utility model, the internal force of the inhaul cable can be measured under the condition that the original structure of the flexible photovoltaic support inhaul cable does not need to be damaged and disassembled.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable force measurement technical field, concretely relates to a rear-mounted flexible photovoltaic support cable force measuring device. BACKGROUND

[0002] The flexible photovoltaic support is through the tensioning of the prestressed steel strand between two supports, and the photovoltaic panel is fixed on the steel strand through the buckle, so that the flexible photovoltaic support can realize the large-span across the fish pond, river, canyon and valley and other adverse terrains, can adapt to various complex topography, and has become an important technical direction for solving the photovoltaic land contradiction. As a new type of photovoltaic support, the flexible photovoltaic support has obvious technical advantages, and in recent years, has begun to be widely applied in the photovoltaic project, but lacks the construction quality detection method and the engineering quality acceptance equipment and facilities for the flexible photovoltaic support in the engineering practice.

[0003] The flexible photovoltaic support is a kind of cable structure photovoltaic support, which can greatly improve the stiffness of steel strand cable by applying large prestress to the steel strand flexible cable, so that the steel strand cable has the support capacity of bearing the weight of photovoltaic module and wind load. The prestress applied by the cable directly determines the stiffness and carrying capacity of the cable, and further affects the safety of the structure and the construction quality of the project. In actual engineering construction, it is difficult to avoid the problem of insufficient prestress applied by part of the cable in a large number of cable tensioning. In addition, after the completion of the photovoltaic project, during the long-term operation of the flexible photovoltaic support structure, under the influence of earthquake, snow disaster or other sudden disasters, the steel strand cable is relaxed, and the prestress of the cable is reduced, so it is also necessary to measure the steel strand cable force to evaluate the safety of the structure.

[0004] Therefore, the flexible photovoltaic support project urgently needs a cable force measuring tool to detect the steel strand cable force after the completion of installation and tensioning or after the disaster, so as to test whether the tensioning cable force of the flexible photovoltaic support meets the design requirements, provide measured data for the safety evaluation of the project after the disaster, and ensure the quality and safety of the project.

[0005] The traditional pressure sensor measurement cable force technology is relatively mature, but it needs to be connected in series with the cable, needs to be pre-buried in the cable before installation and tensioning, and is not suitable for engineering project quality inspection. After searching, no cable force and sag detection device and method applied to flexible photovoltaic support is found. The cable force measurement method based on frequency optimization (CN117647347B) relies on the vibration frequency of the cable to measure the cable force, which is suitable for cable force measurement of empty cable of cable span without load, but this technology cannot be applied to the cable full of photovoltaic components load in the flexible photovoltaic support span. The nondestructive in-situ measurement device and method (CN109596257B) relies on the magnetic flux principle to measure the cable force, but the closed-loop magnetic flux cable force measuring instrument needs to be pre-inserted into the sensor before the cable is tensioned, and cannot be disassembled after installation, which is not suitable for engineering inspection. The open-loop magnetic flux cable force measuring instrument has a magnetic leakage phenomenon, and the measurement result error is large, which is also not suitable for engineering application. Practical new type content

[0006] Therefore, the utility model provides a kind of after-mounted flexible photovoltaic support cable force measuring device, can measure the internal force of cable without destroying and disassembling the original structure of flexible photovoltaic support cable.

[0007] The technical scheme adopted by the utility model is as follows:

[0008] A kind of after-mounted flexible photovoltaic support cable force measuring device, including steel pipe support, open hole steel plate, pressure ring type dynamometer I, clamping piece anchor II and jack;

[0009] The steel pipe support is sleeved outside the installed clamping piece anchor I through cable, and one end is in contact with the installed anchor pad;The open hole steel plate is supported on the other end face of steel pipe support through cable;The pressure ring type dynamometer I is supported on the open hole steel plate through cable;

[0010] The jack is used to pull out cable and provide locking force for clamping piece anchor II;

[0011] The clamping piece anchor II passes through cable, and is locked under the action of the locking force and supported on the pressure ring type dynamometer I.

[0012] Further, the inner diameter of the pressure ring type dynamometer I is greater than the outer diameter of the cable;The opening of the open hole steel plate is greater than the outer diameter of the cable;The inner diameter of the steel pipe support is greater than the outer diameter of the clamping piece anchor I, and the height of the steel pipe support is greater than the sum of the height of the clamping piece anchor I and the retraction distance of the middle tooth clamping piece of the clamping piece anchor II.

[0013] Further, including open hole steel plate, pressure ring type dynamometer II, clamping piece anchor II and jack;

[0014] The pressure ring type dynamometer II is sleeved with the cable outside the installed clamping anchor I, and one end is abutted with the installed anchor pad; the perforated steel plate is passed through the cable and is supported on the other end of the pressure ring type dynamometer II;

[0015] The jack is used for pulling the cable and providing locking force for the clamping anchor II;

[0016] The clamping anchor II is passed through the cable and is locked under the action of the locking force and is supported on the pressure ring type dynamometer II.

[0017] Further, the inner diameter of the pressure ring type dynamometer II is greater than the outer diameter of the clamping anchor I, the height of the pressure ring type dynamometer II is greater than the sum of the height of the clamping anchor I and the retraction distance of the tooth clamping piece of the clamping anchor II, and the hole of the perforated steel plate is greater than the outer diameter of the cable.

[0018] Further, the jack is a through jack.

[0019] Beneficial effects:

[0020] 1. The utility model discloses a cable force measuring device for the rear installation of the cable, which is used for the flexible photovoltaic support, and the cable internal force acting on the clamping anchor I is transferred to the newly added clamping anchor II, so that the cable internal force is measured by the pressure ring type dynamometer without damaging and disassembling the original structure of the flexible photovoltaic support cable, the cable force is detected by using the mechanical principle, the cable internal force is measured by using the pressure ring type dynamometer after the cable internal force is transferred, the detection result is not affected by the external environment, the error of the detection result is small, the sensor does not need to be embedded in the cable in advance, the cable force can be measured without the pre-installation process, the rear installation has little influence on the structure, the measurement result is real and reliable, and real-time monitoring can be realized after installation.

[0021] Secondly, all the devices of the utility model are small components, convenient to carry and install, simple in installation process, and suitable for various complex landforms and application scenes such as mountain, fish pond and building photovoltaic. Not only suitable for the cable force measurement of the flexible photovoltaic support, but also suitable for the cable force measurement of the cable structure roof, the cable structure bridge and other cable structure buildings.

[0022] 2. The pressure ring type dynamometer I of the utility model is a commonly used standard pressure ring type dynamometer, does not need to be customized, is more standardized, has lower cost and is convenient to use.

[0023] 3. The pressure ring type dynamometer II of the utility model replaces the supporting steel pipe, reduces the length of the device parts and the steel strand anchoring end, and is suitable for the case that the length of the cable reserved anchoring end is short. DRAWINGS

[0024] Figure 1 It is a flexible photovoltaic support cable end anchoring schematic view.

[0025] Figure 2 It is a structural schematic view of the embodiment one of the present application.

[0026] Figure 3 It is a structural schematic view of the clip anchor II.

[0027] Figure 4 It is a structural schematic view of the pressure ring type dynamometer I.

[0028] Figure 5 It is a structural schematic view of the perforated steel plate.

[0029] Figure 6 It is a structural schematic view of the steel pipe support.

[0030] Figure 7 It is a structural schematic view of the embodiment two of the present application.

[0031] Figure 8 It is a structural schematic view of the pressure ring type dynamometer II.

[0032] Wherein, 1 is a cable, 2 is a side beam, 3 is an anchor pad, 4.1 is a clip anchor I, 4.2 is a clip anchor II, 4.2.1 is a toothed clip, 4.2.2 is an anchor cup, 5 is a pressure ring type dynamometer I, 6 is a perforated steel plate, 7 is a steel pipe support, and 8 is a pressure ring type dynamometer II. DETAILED DESCRIPTION

[0033] The present application will be described in detail below with reference to the drawings and embodiments.

[0034] As shown in the drawings, when the flexible photovoltaic support cable end is anchored, the cable 1 is locked by the clip anchor I 4.1, and the clip anchor I 4.1 is supported on the anchor pad 3 of the side column or side beam 2; the internal force of the cable 1 under the action of the variable load such as the weight of the photovoltaic module, wind and snow load after the cable 1 is prestressed is F; the diameter of the cable 1 is d1, the diameter of the clip anchor I 4.1 is d2, and the height is h. Figure 1 Embodiment one

[0035] The present application provides a rear-mounted flexible photovoltaic support cable force measuring device, as shown in the drawings, which comprises a steel pipe support 7, a perforated steel plate 6, a pressure ring type dynamometer I 5, a clip anchor II 4.2 and a jack.

[0036] Figure 2 The steel pipe support 7 is sleeved on the installed clip anchor I 4.1 through the cable 1, and one end abuts against the installed anchor pad 3; the perforated steel plate 6 is supported on the other end face of the steel pipe support 7 through the cable 1; and the pressure ring type dynamometer I 5 is supported on the perforated steel plate 6 through the cable 1.

[0037] The steel pipe support 7 is sleeved on the installed clip anchor I 4.1 through the cable 1, and one end abuts against the installed anchor pad 3; the perforated steel plate 6 is supported on the other end face of the steel pipe support 7 through the cable 1; and the pressure ring type dynamometer I 5 is supported on the perforated steel plate 6 through the cable 1.

[0038] ​The jack is used to pull the cable 1 and to provide locking force for the clamp anchor II 4.2;

[0039] The clamp anchor II 4.2 passes through the cable 1, and under the action of the locking force, it locks the cable 1 and supports it on the pressure ring type force gauge I 5.

[0040] Among them, such as Figures 3-6 As shown, the inner diameter D1 of the pressure ring force gauge I5 is greater than the outer diameter of the cable 1; the opening d3 of the perforated steel plate 6 is greater than the outer diameter d1 of the cable 1; the inner diameter D2 of the steel pipe support 7 is greater than the outer diameter d2 of the clamp anchor I 4.1, and the height L3 is greater than the sum of the height h of the clamp anchor I 4.1 and the retraction distance L2 of the middle tooth clamp II 4.2.1 of the clamp anchor II, that is, L3>h+L2, h=L1.

[0041] The jack is a through-hole type. During installation, a through-hole jack is used to clamp cable 1 and push the anchor cup 4.2.2 of the clamping anchor II 4.2 to pull cable 1 outward a certain distance. As cable 1 is pulled out a certain distance, clamping anchor I 4.1 disengages from anchor plate 3. The disengagement distance is not less than the retraction distance L2 of clamping anchor II 4.2.1. During pulling, the clamping anchor I 4.1 can be used as a reference to contact the inner wall of the perforated steel plate 6. Then, the pressure of the through-hole jack is released, and cable 1 retracts under the action of internal force F, which drives the clamping anchor II 4.2.2's clamping plate 4.2.1 to embed into the anchor cup 4.2.2, thereby locking cable 1. The anchoring force of cable 1 is transferred from the original clamping anchor I 4.1 to the newly added clamping anchor II 4.2, which compresses the pressure ring force gauge I 5. The pressure on the pressure ring force gauge I 5 is the internal force F of cable 1.

[0042] Example 2

[0043] This utility model provides a rear-mounted flexible photovoltaic support cable tension measuring device, such as... Figure 7 As shown, it includes a perforated steel plate 6, a pressure ring type force gauge II 8, a clamp anchor II 4.2, and a jack.

[0044] The pressure ring type force gauge II8 passes through the cable 1 and is fitted outside the installed clamp anchor I4.1, with one end abutting against the installed anchor plate 3; the perforated steel plate 6 passes through the cable 1 and supports the other end of the pressure ring type force gauge II8;

[0045] The jack is used to pull the cable 1 and to provide locking force for the clamp anchor II 4.2;

[0046] The clamp anchor II 4.2 passes through the cable 1, and under the action of the locking force, it locks the cable 1 and supports it on the pressure ring type force gauge II 8.

[0047] Among them, such as Figure 8As shown, the inner diameter D3 of the pressure ring dynamometer II 8 is greater than the outer diameter d2 of the clamping anchor I 4.1, and the height L4 is greater than the sum of the height h of the clamping anchor I 4.1 and the retraction distance L2 of the toothed clamping piece II 4.2.1 in the clamping anchor II 4.2, i.e., L4>h+L2, h=L1; and the opening d3 of the perforated steel plate 6 is greater than the outer diameter d1 of the cable 1.

[0048] The jack is a through-hole jack. During installation, the through-hole jack is used to clamp the cable 1, the anchor cup 4.2.2 of the clamping anchor II 4.2 is pushed, and the cable 1 is pulled out a certain distance; the clamping anchor I 4.1 is pulled out a certain distance along with the cable 1, and is separated from the anchor pad plate 3, and the separation distance is not less than the retraction distance L2 of the toothed clamping piece II 4.2.1, and the clamping anchor I 4.1 can be used as a reference during pulling; and then the pressure of the through-hole jack is removed, the cable 1 is retracted under the action of the internal force F, the toothed clamping piece 4.2.1 of the clamping anchor II 4.2 is embedded in the anchor cup 4.2.2, and the cable 1 is locked; the anchoring stress of the cable 1 is transferred from the clamping anchor I 4.1 to the newly added clamping anchor II 4.2, the pressure ring dynamometer II 8 is compressed, and the pressure of the pressure ring dynamometer II 8 is the internal force F of the cable 1.

[0049] In the above two embodiments, the pressure ring dynamometer I 5 is a commonly used standard pressure ring dynamometer, and the inner diameter D1 of the pressure ring dynamometer I 5 is greater than the outer diameter d1 of the cable 1; and the pressure ring dynamometer II 8 is a non-standard pressure ring dynamometer, and the inner diameter D3 of the pressure ring dynamometer II 8 is greater than the outer diameter d2 of the clamping anchor I 4.1, and the height L4 is greater than the sum of the height L1 of the clamping anchor I 4.1 and the retraction distance L2 of the toothed clamping piece II 4.2.1 in the clamping anchor II 4.2.

[0050] It can be seen that, in the first embodiment, a conventional small-aperture pressure ring dynamometer is used, and it is not necessary to customize a large-diameter pressure ring dynamometer, but it needs to support the steel pipe 7, and the length of the device parts and the anchoring end of the steel strand is increased. When the length of the cable 1 reserved for anchoring is insufficient to install the support steel pipe 7+the perforated steel plate 6+the pressure ring dynamometer I 5+the clamping anchor II 4.2+the clamping length of the through-hole jack, the device form of the first embodiment is not applicable. In the second embodiment, the large-aperture pressure ring dynamometer II 8 is used to replace the support steel pipe 7 in the first embodiment, and the length of the device parts and the anchoring end of the steel strand is reduced.

[0051] The utility model provides two different device forms, and different installation and structure forms can be selected according to the length of the cable 1 reserved for anchoring.

[0052] To sum up, the above is only a preferred embodiment of the utility model, and is not used to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A post-installed flexible photovoltaic support cable stay cable force measuring device, characterized by, The steel pipe support, the perforated steel plate, the pressure ring type force meter I, the clamping piece anchor I and the jack are included. The steel pipe support is sleeved outside the installed clamping piece anchor I through the inhaul cable, and one end is in contact with the installed anchor pad. The perforated steel plate is supported on the other end face of the steel pipe support through the inhaul cable. The pressure ring type force meter I is supported on the perforated steel plate through the inhaul cable. The jack is used for pulling the inhaul cable and providing locking force for the clamping piece anchor II. The clamping piece anchor II is locked and supported on the pressure ring type force meter I through the inhaul cable under the action of the locking force.

2. The behind-the-mast flexible photovoltaic spar cable force measuring device of claim 1, wherein, The inner diameter of the pressure ring type force meter I is greater than the outer diameter of the inhaul cable. The perforated hole of the perforated steel plate is greater than the outer diameter of the inhaul cable. The inner diameter of the steel pipe support is greater than the outer diameter of the clamping piece anchor I, and the height of the steel pipe support is greater than the sum of the height of the clamping piece anchor I and the retraction distance of the middle tooth clamping piece of the clamping piece anchor II.

3. A post-installed flexible photovoltaic support guy cable force measuring device, characterized by, The perforated steel plate, the pressure ring type force meter II, the clamping piece anchor II and the jack are included. The pressure ring type force meter II is sleeved outside the installed clamping piece anchor I through the inhaul cable, and one end is in contact with the installed anchor pad. The perforated steel plate is supported on the other end of the pressure ring type force meter II through the inhaul cable. The jack is used for pulling the inhaul cable and providing locking force for the clamping piece anchor II. The clamping piece anchor II is locked and supported on the pressure ring type force meter II through the inhaul cable under the action of the locking force.

4. The behind-the-mast flexible photovoltaic spar cable force measuring device of claim 3, wherein, The inner diameter of the pressure ring type force meter II is greater than the outer diameter of the clamping piece anchor I, and the height of the pressure ring type force meter II is greater than the sum of the height of the clamping piece anchor I and the retraction distance of the middle tooth clamping piece of the clamping piece anchor II. The perforated hole of the perforated steel plate is greater than the outer diameter of the inhaul cable.

5. The behind-the-mast flexible photovoltaic support guy cable cable force measuring device of claim 1 or 3, wherein, The jack is a through jack.

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