Connecting piece for photovoltaic support, test tool and test method

Abstract

The invention discloses a connecting piece for a photovoltaic support, a test tool and a test method, and relates to the technical field of photovoltaic.The connecting piece comprises a connecting piece body; the connecting piece body is made of a glass fiber reinforced nylon material, the connecting piece body comprises a connecting frame and two clamping plates located on the connecting frame, a clamping space used for containing a photovoltaic module is formed between the two clamping plates, the connecting frame is provided with a first mounting hole used for being connected with a bearing cable through a first fastener, and the connecting frame is provided with a second mounting hole used for being connected with the bearing cable through a second fastener. A limiting part used for limiting rotation of the first fastener is arranged on the inner wall of the connecting frame. According to the connecting piece for the photovoltaic support, the connecting piece is made of the glass fiber reinforced nylon material, the weight and cost of the connecting piece can be effectively reduced, meanwhile, the first fastening piece can be prevented from loosening through the limiting part on the inner wall of the connecting frame, and therefore the economical efficiency and stability of the photovoltaic support can be considered while the mechanical property is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic, more particularly, to a connecting piece for photovoltaic support, a test tool and a test method. BACKGROUND

[0002] The flexible photovoltaic support is directly supported by the load-bearing cable and bears various loads. When installed, the load-bearing cable is fixed at both ends of the end support, and the overall rigidity of the structure is improved by applying a pre-tension. In addition, the photovoltaic module is connected and fixed with the load-bearing cable through the connecting piece. The connecting piece is usually made of aluminum alloy by integral molding, resulting in high manufacturing cost.

[0003] Therefore, how to ensure the mechanical properties of the connecting piece while taking into account the economy and stability of the photovoltaic support has become a technical problem to be solved by the technical personnel in the field. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a connecting piece for photovoltaic support to ensure the mechanical properties of the connecting piece while taking into account the economy and stability of the photovoltaic support.

[0005] Another purpose of the present application is to provide a test tool for the above-mentioned connecting piece for photovoltaic support.

[0006] Another purpose of the present application is to provide a test method using the above-mentioned test tool.

[0007] To achieve the above-mentioned purposes, the present application provides the following technical solutions:

[0008] A connecting piece for photovoltaic support, comprising:

[0009] The connecting piece body is made of glass fiber reinforced nylon material, and comprises a connecting frame and two clamping plates located on the connecting frame. A clamping space for accommodating a photovoltaic module is formed between the two clamping plates. The connecting frame is provided with a first mounting hole for connecting with the load-bearing cable through a first fastener, and the inner wall of the connecting frame is provided with a limiting portion for limiting the rotation of the first fastener.

[0010] Optionally, in the above-mentioned connecting piece, the clamping plate comprises a first clamping plate and a second clamping plate, the second clamping plate is located below the first clamping plate, and the length of the second clamping plate is greater than the length of the first clamping plate.

[0011] Optionally, in the connecting piece, the second clamping plate is provided with at least one second mounting hole for fixing the photovoltaic module by a second fastener, and the second mounting hole is located on one side of the second clamping plate to form an avoiding space for avoiding the load-bearing cable on the side of the second clamping plate away from the first clamping plate.

[0012] Optionally, in the connecting piece, the side of the second clamping plate away from the first clamping plate is provided with a plurality of reinforcing plates, and the reinforcing plates extend from the free end of the second clamping plate to the bottom surface of the connecting frame.

[0013] Optionally, in the connecting piece, the reinforcing plates are arc-shapedly transitioned from the free end of the second clamping plate to the bottom surface of the connecting frame.

[0014] Optionally, in the connecting piece, the limiting part includes two limiting plates arranged in parallel on the bottom wall of the connecting frame, and the two limiting plates are used for abutting against the first fastener.

[0015] Optionally, in the connecting piece, at least one of the two clamping plates is provided with an anti-skid part.

[0016] Optionally, in the connecting piece, the clamping plate and the connecting frame are integrally formed.

[0017] Optionally, in the connecting piece, the connecting piece body includes an end connecting piece for connecting the end part of the photovoltaic module and a middle connecting piece for connecting two adjacent photovoltaic modules, and the side of the connecting frame of the end connecting piece is provided with two clamping plates, and the two opposite sides of the connecting frame of the middle connecting piece are respectively provided with two clamping plates.

[0018] A test tool for the connecting piece for the photovoltaic support according to any one of the above, comprising:

[0019] A carrier frame for simulating an end support connected with the load-bearing cable, and the load-bearing cable can be anchored on the carrier frame;

[0020] A photovoltaic frame for simulating the photovoltaic module, the photovoltaic frame is at least two, and the photovoltaic frame can be clamped between the two clamping plates of the connecting piece body, and each photovoltaic frame is connected to the load-bearing cable through the connecting piece body;

[0021] A carrier plate laid on the photovoltaic frame, the carrier plate is used for placing a weight to simulate the load applied on the photovoltaic module.

[0022] Optionally, in the test tool, the two ends of the carrier frame are respectively provided with a support for anchoring the load-bearing cable.

[0023] A testing method, using the testing tool as described above, comprising:

[0024] Step A, wind pressure test, by applying a first direction load on the bearing plate to simulate the deformation of the connector body under wind pressure conditions;

[0025] Step B, wind suction test, by applying a second direction load on the bearing plate, the second direction opposite to the first direction, to simulate the deformation of the connector body under wind suction conditions.

[0026] Optionally, in the above testing method, the wind pressure test specifically comprises:

[0027] Step A1, install the testing tool, place the bearing frame on the support surface, and tension and anchor the load-bearing cable on the bearing frame, the photovoltaic frame is clamped between the two clamping plates of the connector body and fixed on the load-bearing cable by the first fastener;

[0028] Step A2, lay the bearing plate, lay the bearing plate on the side of the photovoltaic frame away from the bearing frame;

[0029] Step A3, apply load, place weights on the bearing plate, and determine the dynamic load coefficient value;

[0030] Step A4, record the deformation of the connector, observe and record the deformation of the connector body by loading different static loads until the connector body is destroyed.

[0031] Optionally, in the above testing method, the wind suction test specifically comprises:

[0032] Step B1, turn over the bearing frame, turn over the bearing frame in step A1 and place it on the support surface;

[0033] Step B2, lay the bearing plate, lay the bearing plate on the side of the photovoltaic frame close to the bearing frame;

[0034] Step B3, apply load, place weights on the bearing plate, and determine the dynamic load coefficient value;

[0035] Step B4, record the deformation of the connector, observe and record the deformation of the connector body by loading different static loads until the connector body is destroyed.

[0036] Optionally, in the above testing method, the wind pressure test further comprises:

[0037] Step A5, limit test, by applying a limit load to the bearing plate to test the limit bearing capacity of the connector body.

[0038] The connecting piece for the photovoltaic support provided by the application is prepared by using glass fiber reinforced nylon material, and the photovoltaic module can be clamped in the clamping space between the two clamping plates of the connecting frame, the connecting frame can be connected with the load-bearing cable through the first fastener, and the limiting portion for limiting the rotation of the first fastener is arranged on the inner wall of the connecting frame, so that the loosening of the first fastener can be prevented. As can be seen from the above example, the connecting piece for the photovoltaic support provided by the application is prepared by using glass fiber reinforced nylon material, which can effectively reduce the weight and cost of the connecting piece, and the loosening of the first fastener can be prevented through the limiting portion on the inner wall of the connecting frame, so that the economy and stability of the photovoltaic support can be considered while the mechanical properties are met.

[0039] The technical features mentioned above, the technical features to be mentioned below, and the technical features shown in the drawings alone can be combined with each other arbitrarily, as long as the combined technical features are not contradictory to each other. All feasible feature combinations are the technical contents explicitly described herein. Any one of the multiple sub-features included in the same sentence can be applied independently, and does not have to be applied together with other sub-features. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can also be obtained according to the provided drawings without creative labor for those skilled in the art.

[0041] Figure 1 The isometric view of the end connecting piece provided by the embodiment of the present application;

[0042] Figure 2 The top view of the end connecting piece provided by the embodiment of the present application;

[0043] Figure 3 The bottom view of the end connecting piece provided by the embodiment of the present application;

[0044] Figure 4 The isometric view of the middle connecting piece provided by the embodiment of the present application;

[0045] Figure 5 The side view of the middle connecting piece provided by the embodiment of the present application;

[0046] Figure 6 The top view of the middle connecting piece provided by the embodiment of the present application;

[0047] Figure 7A bottom view of the middle connecting piece provided for the embodiment of the present application;

[0048] Figure 8 An isometric view of the connecting piece and the photovoltaic module assembly provided for the embodiment of the present application;

[0049] Figure 9 A top view of the connecting piece and the photovoltaic module assembly provided for the embodiment of the present application;

[0050] Figure 10 A bottom view of the connecting piece and the photovoltaic module assembly provided for the embodiment of the present application;

[0051] Figure 11 A partial view of the end connecting piece and the photovoltaic module assembly provided for the embodiment of the present application Figure 1 ;

[0052] Figure 12 A partial view of the end connecting piece and the photovoltaic module assembly provided for the embodiment of the present application Figure 2 ;

[0053] Figure 13 A partial view of the middle connecting piece and the photovoltaic module assembly provided for the embodiment of the present application Figure 1 ;

[0054] Figure 14 A partial view of the middle connecting piece and the photovoltaic module assembly provided for the embodiment of the present application Figure 2 ;

[0055] Figure 15 A structural schematic of the test tool provided for the embodiment of the present application Figure 1 ;

[0056] Figure 16 A structural schematic of the test tool provided for the embodiment of the present application Figure 2 ;

[0057] Figure 17 A flowchart of the test method provided for the embodiment of the present application;

[0058] Figure 18 A flowchart of the wind pressure test provided for the embodiment of the present application Figure 1 ;

[0059] Figure 19 A flowchart of the wind pressure test provided for the embodiment of the present application Figure 2 ;

[0060] Figure 20 A flowchart of the wind suction test provided for the embodiment of the present application.

[0061] Wherein, 100 is a connecting piece body, 101 is an end connecting piece, 102 is a middle connecting piece, 10 is a connecting frame, 20 is a clamping plate, and 30 is a clamping space.

[0062] 11 is a first mounting hole, 12 is a limiting part, and 121 is a limiting plate.

[0063] 21 is a first clamping plate, 22 is a second clamping plate, 221 is a second mounting hole, 222 is a avoiding space, 223 is a reinforcing plate, and 23 is an anti-skid part.

[0064] 200 is a photovoltaic module.

[0065] 300 is a bearing cable, 301 is an anchor, and 302 is a clamp.

[0066] 400 is a test tool, 401 is a bearing frame, 4011 is a support, 4012 is a supporting leg, and 402 is a photovoltaic frame. DETAILED DESCRIPTION

[0067] The core of the present application is to provide a connecting piece for a photovoltaic support, so as to ensure the mechanical properties of the connecting piece while taking into account the economy and stability of the photovoltaic support.

[0068] Another core of the present application is to provide a test tool for the connecting piece for the photovoltaic support.

[0069] Another core of the present application is to provide a test method using the test tool.

[0070] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0071] The flexible photovoltaic support directly supports the photovoltaic module and various loads borne by the photovoltaic module through a bearing cable. When installed, the two ends of the bearing cable are fixed to an end support, and the overall rigidity of the structure is improved by applying a pre-tension to it. Moreover, the photovoltaic module is connected and fixed with the bearing cable through a connecting piece. The connecting piece is usually integrally formed of an aluminum alloy, resulting in a high manufacturing cost.

[0072] Therefore, the embodiments of the present application disclose a connecting piece for a photovoltaic support, comprising a connecting piece body 100. The connecting piece is made of a glass fiber reinforced nylon material, which can effectively reduce the weight and cost of the connecting piece, and the first fastener can be prevented from loosening through the limiting part 12 on the inner wall of the connecting frame 10, so as to meet the mechanical properties while taking into account the economy and stability of the photovoltaic support.

[0073] The application will be described in detail below Figures 1 to 14 The connecting piece for the photovoltaic support disclosed in the embodiments of the application is explained and described in detail.

[0074] As shown in Figure 1 and Figure 4 , the connecting piece body 100 can be formed by injection molding of glass fiber reinforced nylon material to reduce the weight and cost of the connecting piece body 100, while the glass fiber reinforced nylon material has good fatigue resistance and good performance under repeated stress, can withstand dynamic load, and has good shock absorption performance. The nylon material has good shock absorption and energy absorption characteristics, which can effectively reduce vibration and noise. In addition, the coefficient of thermal expansion of the glass fiber reinforced nylon material is lower than that of metal materials such as aluminum alloy, and the size is more stable under temperature change, and the corrosion resistance is better than that of aluminum alloy material. In a variety of chemicals and humid environments, the glass fiber reinforced nylon material has good resistance, thereby improving the stability of the connecting piece body 100 and reducing the cost of the connecting piece body 100.

[0075] As shown in Figure 1 and Figure 4 , the connecting piece body 100 can include a connecting frame 10 and two clamping plates 20, and the two clamping plates 20 are connected to the connecting frame 10. The two clamping plates 20 have a certain distance therebetween to form a clamping space 30 for accommodating the photovoltaic module 200 between the two clamping plates 20, so that the frame of the photovoltaic module 200 can be clamped in the clamping space 30. At the same time, the connecting frame 10 is fixed to the load cable 300 to realize the connection and fixation between the photovoltaic module 200 and the load cable 300, as shown in Figures 8 to 10 .

[0076] As shown in Figure 1 and Figure 4 , the connecting frame 10 is formed with a mounting cavity for being fixed to the load cable 300, and a first mounting hole 11 is arranged on the connecting frame 10 and can be connected with the load cable 300 by a first fastener, so that the first fastener can pass through the first mounting hole 11 and be connected and fixed with the load cable 300 by a clamp 302. At the same time, a limiting portion 12 is arranged on the inner wall of the connecting frame 10 to limit the rotation of the first fastener, which can facilitate the fastening of the first fastener.

[0077] In some embodiments, as shown in Figure 1 and Figure 4 , the connecting frame 10 can adopt a rectangular frame structure, and as shown in Figure 3 and Figure 7As shown, the first mounting hole 11 can adopt two, and two first mounting holes 11 can be provided on the bottom wall of the connecting frame 10, so that the first fastener such as a bolt is sequentially threaded through the first mounting hole 11 and the connecting hole of the clamp 302 from the mounting chamber and connected and fixed by the lock nut, as shown in Figure 11 and Figure 14 As shown. Among them, the limiting part 12 can include two limiting plates 121 arranged in parallel on the bottom wall of the connecting frame 10, and the inner side wall of the two limiting plates 121, that is, the opposite sides of the two limiting plates 121, can abut against the head of the first fastener such as a bolt, so as to limit the rotation of the first fastener such as a bolt, so that the lock nut can conveniently lock and fix the first fastener such as a bolt.

[0078] In some embodiments, as shown in Figures 1 to 7 The connecting member body 100 can include an end connecting member 101 and a middle connecting member 102. As shown in Figures 1 to 3 The end connecting member 101 can fix the end of the photovoltaic module 200 to the load-bearing cable 300, and two clamping plates 20 can be connected to one side of the connecting frame 10 of the end connecting member 101 to clamp the frame of the end of the photovoltaic module 200. As shown in Figures 4 to 7 The middle connecting member 102 can connect two adjacent photovoltaic modules 200 to fix the adjacent ends of the two photovoltaic modules 200 to the load-bearing cable 300, and the connecting frame 10 of the middle connecting member 102 is arranged on the opposite sides of the two clamping plates 20, respectively, to clamp the frame of the adjacent ends of the two photovoltaic modules 200.

[0079] In some embodiments, the clamping plate 20 and the connecting frame 10 can be integrally injection molded, and as shown in Figure 1 and Figure 4 At least one of the two clamping plates 20 can be provided with an anti-skid part 23, that is, the anti-skid part 23 can be provided on one of the two clamping plates 20, or the anti-skid part 23 can be provided on both clamping plates 20, so as to increase the friction between the clamping plate 20 and the frame of the photovoltaic module 200, prevent the photovoltaic module 200 from shifting, and improve the reliability of the connection between the connecting member body 100 and the photovoltaic module 200.

[0080] In some embodiments, as shown in Figure 2 and Figure 6 The anti-skid part 23 can adopt a sawtooth pattern distributed on the side surface of the clamping plate 20 close to the clamping space 30, and the sawtooth pattern can be continuously or intermittently distributed from the root of the clamping plate 20 to the free end of the clamping plate 20, so as to increase the friction between the clamping plate 20 and the frame of the photovoltaic module 200, and improve the reliability of the connection between the connecting member body 100 and the photovoltaic module 200. It should be noted that the root of the clamping plate 20 is the end connected to the connecting frame 10, and the free end of the clamping plate 20 is the end away from the connecting frame 10.

[0081] In some embodiments, as shown in Figure 1 and Figure 4 , the clamping plate 20 can include a first clamping plate 21 and a second clamping plate 22, and the second clamping plate 22 is located below the first clamping plate 21. At the same time, the length of the second clamping plate 22 is greater than the length of the first clamping plate 21, that is, the distance from the root to the free end of the second clamping plate 22 is greater than the distance from the root to the free end of the first clamping plate 21, so that the second clamping plate 22 can have a larger supporting area, ensuring the reliability of the connection of the photovoltaic module 200, while shortening the length of the first clamping plate 21, which can reduce the light-receiving area of the photovoltaic module 200, improve the power generation efficiency of the photovoltaic module 200, and at the same time, reduce the amount of use of the connector body 100, saving costs.

[0082] In some embodiments, as shown in Figure 2 and Figure 6 , the second clamping plate 22 can be provided with at least one second mounting hole 221, that is, the second mounting hole 221 can be one or two, so that the second fastener such as a bolt can be sequentially passed through the second mounting hole 221 and the fixing hole on the frame of the photovoltaic module 200 from the side of the second clamping plate 22 away from the first clamping plate 21, to realize the connection and fixation between the photovoltaic module 200 and the connector body 100, as shown in Figure 12 and Figure 14 . Among them, as shown in Figure 3 and Figure 7 , the second mounting hole 221 can be located on one side of the second clamping plate 22 to form an avoiding space 222 on the side of the second clamping plate 22 away from the first clamping plate 21, which can avoid the interference between the second fastener such as a bolt and the load-bearing cable 300, as shown in Figure 12 and Figure 14 .

[0083] In some embodiments, as shown in Figure 1 and Figure 4 , the first clamping plate 21 can be formed by extending outward from the top surface of the connecting frame 10, and the free end of the first clamping plate 21 can be provided with an arc-shaped chamfer to reduce the risk of damage to the free end of the first clamping plate 21 caused by stress concentration. At the same time, the side of the second clamping plate 22 away from the first clamping plate 21 can be provided with a plurality of reinforcing plates 223, and the reinforcing plates 223 extend from the free end of the second clamping plate 22 to the bottom surface of the connecting frame 10, so that part of the load on the second clamping plate 22 is transmitted to the connecting frame 10 through the reinforcing plates 223, so that the second clamping plate 22, the reinforcing plates 223 and the connecting frame 10 can collectively bear the load of the photovoltaic module 200, ensuring the strength and stability of the connector body 100 as a whole.

[0084] In some embodiments, as shown in Figure 5As shown, the reinforcing plate 223 can be arc-shapedly transitioned from the free end of the second clamping plate 22 to the bottom surface of the connecting frame 10, and the free end of the second clamping plate 22 can be provided with an arc-shaped chamfer to reduce the generation of stress concentration and reduce the risk of damage to the second clamping plate 22.

[0085] The connecting piece for the photovoltaic support disclosed in the embodiments of the present application is prepared from a glass fiber reinforced nylon material, and the photovoltaic module 200 can be clamped in the clamping space 30 between the two clamping plates 20 of the connecting frame 10. The connecting frame 10 can be connected to the load-bearing cable 300 through the first fastener, and the inner wall of the connecting frame 10 is provided with a limiting portion 12 that can limit the rotation of the first fastener, thereby preventing the first fastener from loosening.

[0086] The connecting piece for the photovoltaic support disclosed in the embodiments of the present application is prepared from a glass fiber reinforced nylon material, and the photovoltaic module 200 can be clamped in the clamping space 30 between the two clamping plates 20 of the connecting frame 10. The connecting frame 10 can be connected to the load-bearing cable 300 through the first fastener, and the inner wall of the connecting frame 10 is provided with a limiting portion 12 that can limit the rotation of the first fastener, thereby preventing the first fastener from loosening.

[0087] As shown in Figure 15 and Figure 16 The embodiments of the present application also disclose a test tool 400 for the connecting piece for the photovoltaic support, which is the connecting piece for the photovoltaic support disclosed in the above embodiments, so the connecting piece has all the technical effects of the connecting piece for the photovoltaic support described above, which will not be repeated here. The test tool 400 can include a bearing frame 401, a photovoltaic frame 402 and a bearing plate.

[0088] As shown in Figure 15 The bearing frame 401 can be welded from a hollow steel pipe, and the load-bearing cable 300 can be anchored to the bearing frame 401 by the anchor 301 to simulate the anchoring of the load-bearing cable 300 to the column of the end support by the anchor 301. Meanwhile, the photovoltaic frame 402 can adopt a rectangular structure welded from a steel pipe to simulate the photovoltaic module 200, and the photovoltaic frame 402 can adopt at least two, i.e. two, three or more photovoltaic frames 402 arranged side by side along the short side direction of the photovoltaic frame 402, and the photovoltaic frame 402 can be clamped between the two clamping plates 20 of the connecting piece body 100, and each photovoltaic frame 402 can be connected to the load-bearing cable 300 through the connecting piece body 100 to simulate the stress working condition of each photovoltaic module 200 of the actual photovoltaic support, so that the mechanical test of the connecting piece body 100 is closer to the actual stress working condition of the photovoltaic support, ensuring the accuracy of the mechanical test of the connecting piece body 100. In addition, the bearing plate can be laid on the photovoltaic frame 402, so that the load applied to the photovoltaic module 200 can be simulated by placing a weight on the bearing plate.

[0089] In some embodiments, as shown in Figure 15 The two ends of the carrier frame 401 can be respectively provided with supports 4011, so that the load bearing cable 300 can be anchored to the supports 4011 by the anchor 301. Meanwhile, as shown in Figure 15 and Figure 16 A plurality of legs 4012 can be distributed on the two sides of the carrier frame 401, and the legs 4012 can adopt a trapezoidal structure, and the bottom area of the leg 4012 is greater than the top area of the leg 4012, so that the contact area of the carrier frame 401 with the supporting surface such as the ground is larger, and the stability of the carrier frame 401 during the loading test is ensured.

[0090] As shown in Figure 17 The test method disclosed in the embodiment of the present application also discloses a test tool 400 as described above, so it has all the technical effects of the test tool 400 described above, which will not be repeated here. The test method includes the steps of S100 wind pressure test and S200 wind suction test. It should be noted that in the present embodiment, as shown in Figure 15 The number of connecting member bodies 100 can be six, but is not limited to six, to connect and fix two photovoltaic frames 402, wherein the connecting member bodies 100 can adopt two middle connecting members 102 and four end connecting members 101, and of course the number of connecting member bodies 100 can also be two or other numbers, but one end connecting member 101 and one middle connecting member 102 are required. Meanwhile, the photovoltaic frame 402 can adopt two, but is not limited to two, so as to simulate the end position and the middle position, and facilitate the setting of the corresponding connecting member body 100 for testing.

[0091] The test method disclosed in the embodiment of the present application will be explained and described in detail in combination with Figures 15 to 20

[0092] Step S100, wind pressure test;

[0093] A first direction load is applied on the carrier plate to simulate the deformation of the connecting member body 100 under the wind pressure working condition. It should be noted that the first direction refers to the direction perpendicular to the carrier plate, i.e. the direction of the load is vertical downward.

[0094] As shown in Figure 18 The wind pressure test can specifically include the steps of S101 installing the test tool, S102 laying the carrier plate, S103 applying the load, and S104 recording the deformation of the connecting member.

[0095] Step S101, installing the test tool;

[0096] ​The bearing frame 401 is placed on a support surface such as the ground, and the bearing cable 300 is tensioned by a tensioning device and anchored to the supports 4011 at both ends of the bearing frame 401 through the anchorage 301, and the two photovoltaic frames 402 are clamped between the two clamping plates 20 of the connecting piece body 100 and fixed to the bearing cable 300 by the first fasteners such as bolts.

[0097] Step S102, laying the bearing plate;

[0098] The bearing plate is laid on the side of the photovoltaic frame 402 away from the bearing frame 401. The bearing plate can be a gypsum board, so that the bearing plate can bear a larger load.

[0099] Step S103, applying load;

[0100] The weight is placed on the bearing plate to apply a static load to the bearing plate, and the dynamic load coefficient value is determined according to experience. For example, the dynamic load coefficient value can be a value larger than the static load coefficient. For example, if the static load coefficient is 1, the dynamic load coefficient can be 1.25, so as to increase the load of the test and make it more consistent with the real situation. The weight can be an object with uniform mass and easy quantification such as a brick, or the weight can be packed into a sack for use during measurement. It should be noted that when the weight is placed on the bearing plate, the weight should be evenly distributed on the plane.

[0101] Step S104, recording the deformation of the connecting piece;

[0102] The deformation of the connecting piece body 100 is observed and recorded by applying different static loads, i.e. by changing the number and distribution of the weights, until the connecting piece body 100 is destroyed, thereby completing the wind pressure test.

[0103] Of course, as shown in Figure 19 the wind pressure test can also include step S105 limit test, in which a limit load is applied to the bearing plate to test the limit bearing capacity of the connecting piece body 100. For example, a person can stand on the bearing plate to test the limit bearing capacity of the connecting piece body 100.

[0104] S200, wind suction test;

[0105] A second direction load is applied to the bearing plate to simulate the deformation of the connecting piece body 100 under wind suction conditions. It should be noted that the second direction refers to the direction perpendicular to the bearing plate and opposite to the first direction, i.e. the direction of the load is vertically upward.

[0106] As shown in Figure 20As shown, the wind suction test can specifically include step S201 of overturning the bearing frame, step S202 of laying the bearing plate, step S203 of applying a load, and step S204 of recording the deformation of the connecting piece.

[0107] Step S201, overturning the bearing frame;

[0108] The bearing frame 401 in the installation test tool of step S101 is overturned and elevated on the support surface, as shown. Figure 16 Specifically, the overturned bearing frame 401 can be supported on the cushion blocks on the ground or the like support surface, so as to be elevated on the ground or the like support surface. It should be noted that when the wind pressure test is completed, a new connecting piece body 100 needs to be replaced for the wind suction test, and multiple test tools 400 can be prepared for the wind pressure test and the wind suction test at the same time.

[0109] Step S202, laying the bearing plate;

[0110] The bearing plate is laid on one side of the photovoltaic frame 402 close to the bearing frame 401, that is, the bearing plate is located between the photovoltaic frame 402 and the bearing frame 401.

[0111] Step S203, applying a load;

[0112] The weight is placed on the bearing plate to apply a static load to the bearing plate, and the dynamic load coefficient value is determined according to experience. The specific implementation is the same as the wind pressure test, which is not repeated here.

[0113] Step S204, recording the deformation of the connecting piece;

[0114] The deformation of the connecting piece body 100 is observed and recorded by applying different static loads, that is, by changing the number and distribution of the weights, until the connecting piece body 100 is damaged.

[0115] The test method disclosed in the embodiments of the application considers the stress condition of the bearing cable 300 in the real flexible photovoltaic support application scene, considers the dynamic load coefficient, is closer to the real situation, the data is more accurate, the test method is more simple, the test tool 400 can be repeatedly used, and the test efficiency is greatly improved.

[0116] The terms "first" and "second" and the like in the specification and claims of the application and the above-described drawings are used to distinguish different objects, and are not used to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can include steps or units not listed.

[0117] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connector for a photovoltaic mounting bracket, characterized in that, include: The connector body (100) is made of glass fiber reinforced nylon material, and the connector body (100) includes a connecting frame (10) and two clamping plates (20) located on the connecting frame (10). A clamping space (30) for accommodating a photovoltaic module (200) is formed between the two clamping plates (20). The connecting frame (10) is provided with a first mounting hole (11) for connecting with the load-bearing cable (300) through a first fastener. The inner wall of the connecting frame (10) is provided with a limiting part (12) for restricting the rotation of the first fastener.

2. The connector according to claim 1, characterized in that, The card plate (20) includes a first card plate (21) and a second card plate (22), the second card plate (22) is located below the first card plate (21), and the length of the second card plate (22) is greater than the length of the first card plate (21).

3. The connector according to claim 2, characterized in that, The second card plate (22) has at least one second mounting hole (221) for fixing the photovoltaic module (200) by a second fastener, and the second mounting hole (221) is located on one side of the second card plate (22) so that a clearance space (222) for avoiding the load-bearing cable (300) is formed on the side of the second card plate (22) away from the first card plate (21).

4. The connector according to claim 2, characterized in that, The second card plate (22) is provided with a plurality of reinforcing plates (223) on the side away from the first card plate (21), and the reinforcing plates (223) extend from the free end of the second card plate (22) toward the bottom surface of the connecting frame (10).

5. The connector according to claim 4, characterized in that, The reinforcing plate (223) transitions in an arc shape from the free end of the second card plate (22) to the bottom surface of the connecting frame (10).

6. The connector according to claim 1, characterized in that, The limiting part (12) includes two limiting plates (121) arranged parallel to each other on the bottom wall of the connecting frame (10), and the two limiting plates (121) are used to abut against the first fastener.

7. The connector according to claim 1, characterized in that, At least one of the two plates (20) is provided with an anti-slip part (23).

8. The connector according to claim 1, characterized in that, The card plate (20) and the connecting frame (10) are integrally formed.

9. The connector according to any one of claims 1 to 8, characterized in that, The connector body (100) includes an end connector (101) for connecting the photovoltaic module (200) at the end and a middle connector (102) for connecting two adjacent photovoltaic modules (200). Two clamping plates (20) are provided on one side of the connecting frame (10) of the end connector (101), and two clamping plates (20) are provided on both sides of the connecting frame (10) of the middle connector (102) that are arranged opposite to each other.

10. A testing fixture for a connector for a photovoltaic support as described in any one of claims 1 to 9, characterized in that, include: A support frame (401) is used to simulate an end support connected to the load-bearing cable (300), and the load-bearing cable (300) can be anchored to the support frame (401); A photovoltaic frame (402) is used to simulate the photovoltaic module (200). There are at least two photovoltaic frames (402), and each photovoltaic frame (402) can be snapped between two plates (20) of the connector body (100). Each photovoltaic frame (402) is connected to the load-bearing cable (300) through the connector body (100). A support plate is laid on the photovoltaic frame (402) and is used to place heavy objects to simulate the load applied to the photovoltaic module (200).

11. The test fixture according to claim 10, characterized in that, The bearing frame (401) is provided with supports (4011) at both ends for anchoring the load-bearing cable (300).

12. A testing method, employing the testing fixture (400) as described in claim 10 or 11, characterized in that, include: Step A, wind pressure test, by applying a first directional load to the bearing plate to simulate the deformation of the connector body (100) under wind pressure conditions; Step B, wind suction test, involves applying a second directional load to the bearing plate, the second direction being opposite to the first direction, to simulate the deformation of the connector body (100) under wind suction conditions.

13. The test method according to claim 12, characterized in that, The wind pressure test specifically includes: Step A1: Install the test fixture, place the support frame (401) on the support surface, and tension and anchor the load-bearing cable (300) to the support frame (401). The photovoltaic frame (402) is snapped between the two clips (20) of the connector body (100) and fixed to the load-bearing cable (300) by the first fastener. Step A2, lay the support plate, and place the support plate on the side of the photovoltaic frame (402) away from the support frame (401); Step A3: Apply load by placing a weight on the bearing plate and determining the value of the dynamic load factor; Step A4: Record the deformation of the connector. By applying different static loads, observe and record the deformation of the connector body (100) until the connector body (100) is destroyed.

14. The test method according to claim 13, characterized in that, The air suction test specifically includes: Step B1, flip the support frame, flip the support frame (401) from step A1 and suspend it on the support surface; Step B2, lay the support plate, and place the support plate on the side of the photovoltaic frame (402) close to the support frame (401); Step B3: Apply load by placing a weight on the bearing plate and determining the value of the dynamic load factor; Step B4: Record the deformation of the connector. By applying different static loads, observe and record the deformation of the connector body (100) until the connector body (100) is destroyed.

15. The test method according to claim 13, characterized in that, The wind pressure test also includes: Step A5, ultimate test, by applying an ultimate load to the bearing plate to test the ultimate bearing capacity of the connector body (100).

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