Photovoltaic support testing device

Abstract

The utility model provides a photovoltaic support testing device and relates to the technical field of photovoltaic cells, the photovoltaic support testing device is used for testing performance indexes of a photovoltaic support, the photovoltaic support comprises a mandrel and a main beam, the main beam is installed at the side end of the mandrel and can axially rotate, and the photovoltaic support testing device comprises a base frame and a pressure loading assembly. The base frame comprises a bottom frame used for bearing the main beams and the mandrels; the supporting assemblies are fixed to the two opposite ends of the bottom frame; and the bearing rod is bridged between the two supporting assemblies. The pressure loading assembly is connected between the bearing rod and the main beam and used for applying preset pressure to the main beam. When the photovoltaic support is tested, the mandrel can be fixed on the bottom frame of the base frame, the main beams are fixed on the two sides of the mandrel respectively to simulate the situation that the photovoltaic support is fixed on an external structure, and at the moment, preset pressure can be applied to the main beams through the pressure loading assembly. Technical indexes such as various parameters and service life of the photovoltaic support under different environmental influences can be simulated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photovoltaic cells, and particularly relates to a photovoltaic support testing device. BACKGROUND

[0002] The photovoltaic tracking support is one of the more effective methods for improving photovoltaic power generation efficiency and reducing construction cost, which enables the light-receiving surface of the flat photovoltaic module to always face the sun. Under the same irradiation condition, the automatic angle adjustment mode can absorb more solar radiation energy than the fixedly installed photovoltaic module, thereby achieving the purpose of reducing the cost of photovoltaic power generation. Some photovoltaic tracking supports include a main beam and a mandrel, and the mandrel can be used as a connecting structure of a multi-drive photovoltaic support, and the multiple drives are independent of each other and do not affect each other.

[0003] However, after the mandrel and the main beam are designed according to requirements, there is a lack of equipment capable of testing technical parameters of components of the photovoltaic tracking support, and the technical parameters of the photovoltaic support are not easy to obtain, which may cause structural risks of the photovoltaic support.

[0004] It should be noted that the above content is not necessarily prior art, and is not used to limit the patent protection scope of the application. CONTENT OF THE UTILITY MODEL

[0005] Embodiments of the application provide a photovoltaic support testing device to solve or alleviate one or more technical problems in the prior art.

[0006] The first aspect of the embodiments of the application provides a photovoltaic support testing device for testing performance indicators of a photovoltaic support, the photovoltaic support including a mandrel and a main beam, the main beam being installed at a side end of the mandrel and being axially rotatable, and the photovoltaic support testing device including:

[0007] A base frame including:

[0008] A bottom frame for bearing the main beam and the mandrel;

[0009] Support assemblies respectively fixed to opposite ends of the bottom frame;

[0010] A bearing rod crossing between the two support assemblies;

[0011] Pressure loading assemblies connected between the bearing rod and the main beam for applying a preset pressure to the main beam.

[0012] Optionally, the main beam includes a first segment and a second segment, and the first segment and the second segment are respectively connected to opposite sides of the mandrel.

[0013] The pressure loading assemblies are two, one of the pressure loading assemblies is connected to the first segment, and the other of the pressure loading assemblies is connected to the second segment.

[0014] Optionally, the pressure loading assembly comprises:

[0015] a telescopic assembly fixed to one end of the load bearing rod;

[0016] a fixed sleeve fixed to one end of the telescopic assembly away from the load bearing rod, and sleeved outside the main beam;

[0017] wherein the telescopic assembly can be extended or shortened to exert a preset pressure on the main beam.

[0018] Optionally, the telescopic assembly comprises a driving electric cylinder fixed to the load bearing rod, and a telescopic shaft connected between the driving electric cylinder and the fixed sleeve, the driving electric cylinder being used to drive the telescopic shaft to extend or retract.

[0019] Optionally, the load bearing rod is provided with a sliding rail extending along the length direction, and the sliding rail is provided with a pulley assembly slidable along the length direction of the sliding rail.

[0020] The pulley assembly is further fixedly connected with the pressure loading assembly, and the pulley assembly is used to drive the pressure loading assembly to slide.

[0021] Optionally, the photovoltaic support testing device further comprises:

[0022] a rotary driving assembly installed on the bottom frame and connected with one end of the main beam, and used to drive the main beam to rotate axially;

[0023] a torque and speed instrument connected in series between the rotary driving assembly and the main beam, and used to test the torque of the main beam when rotating.

[0024] Optionally, the fixed sleeve comprises:

[0025] a connecting block fixedly connected with the end of the telescopic shaft;

[0026] a first magnetic pole ring sleeve fixed to one end of the connecting block away from the telescopic shaft, and having a first through hole;

[0027] a second magnetic pole ring sleeve accommodated in the first through hole, and sleeved outside the outer wall of the main beam;

[0028] wherein the inner wall of the first through hole and the outer wall of the second magnetic pole ring sleeve have the same magnetic pole.

[0029] Optionally, the photovoltaic support testing device further comprises:

[0030] a hinged support fixed to the bottom frame, the hinged support being provided with an arc concave groove;

[0031] The connecting piece has one end fixedly connected with the end of the main beam and the other end provided with a spherical lug which is at least partially accommodated in the arc-shaped groove.

[0032] Optionally, the photovoltaic support testing device further comprises a temperature sensor installed on the mandrel and used for detecting the temperature when the mandrel rotates.

[0033] Optionally, the bottom frame comprises a rectangular frame including opposite first and second long sides.

[0034] The support assembly comprises:

[0035] The first support rod has a first end fixed to the first long side and a second end connected to the load-bearing rod.

[0036] The second support rod has a first end fixed to the second long side and a second end connected to the load-bearing rod.

[0037] The first and second support rods are both inclined towards the side closer to each other to form a triangular support for the load-bearing rod.

[0038] The technical solution of the present application can have the following advantages:

[0039] When testing the photovoltaic support, the mandrel can be fixed on the bottom frame of the base frame, and the main beams are fixed on both sides of the mandrel to simulate the case that the photovoltaic support is fixed on an external structure. At this time, the preset pressure can be applied to the main beams by the pressure loading assembly to simulate various parameters, service life and other technical indexes of the photovoltaic support under the influence of different environments.

[0040] The pressure loading device can simulate the gravity of the photovoltaic panel to test the service life of the photovoltaic support. The preset pressure can also be adjusted according to actual conditions, which can only simulate the case that the photovoltaic support bears the gravity of the photovoltaic panel, or simulate the case that the photovoltaic support bears the gravity of the photovoltaic panel and wind pressure. The preset pressure intensity can also be adjusted to accelerate the testing process and shorten the testing time. The preset pressure can also be gradually increased until the photovoltaic support is deformed destructively to test the ultimate bearing capacity and compression strength of the photovoltaic support. After the photovoltaic support is deformed destructively, the deformation characteristics and deformation area of the photovoltaic support when reaching the ultimate bearing capacity can be observed to find the weak links and design defects of the photovoltaic support.

[0041] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features will be readily apparent to those skilled in the art by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0042] In the drawings, like reference numerals refer to like elements throughout the various figures. The drawings are not necessarily to scale, the emphasis instead being placed upon illustrating the principles of the application. It should be understood that the drawings are merely for purposes of illustration and are not to be construed as limiting the scope of the application.

[0043] Figure 1 A structural schematic diagram of a photovoltaic support test device provided by an embodiment of the application;

[0044] Figure 2 A structural schematic diagram of a pressure loading device of a photovoltaic support test device provided by an embodiment of the application;

[0045] Figure 3 A structural schematic diagram of a fixing sleeve of a photovoltaic support test device provided by an embodiment of the application;

[0046] Figure 4 A structural schematic diagram of a base frame of a photovoltaic support test device provided by an embodiment of the application;

[0047] Figure 5 A structural schematic diagram of a hinge support and a connecting piece in a photovoltaic support test device provided by an embodiment of the application.

[0048] Legend of reference numerals:

[0049] Bottom frame 11; support assembly 13; bearing rod 15; first long side 111; second long side 112; first support rod 131; second support rod 132; slide rail 151; pulley assembly 153; drive electric cylinder 211; telescopic shaft 212; connecting block 231; first magnetic pole ring sleeve 233; second magnetic pole ring sleeve 235; rotary drive assembly 30; torque and speed instrument 40; temperature sensor 50; hinge support 60; connecting piece 70; spherical lug 71; mandrel 91; main beam 92; first section 921; second section 922. DETAILED DESCRIPTION

[0050] Embodiments of the application are described in detail below with reference to the attached drawing figures, wherein the embodiments of the application are shown by way of examples. In the drawings, the size of layers, regions, elements and the relative sizes of the same are exaggerated for clarity. Identical or similar elements are denoted across the various figures using identical or similar reference numerals. The embodiments described below are examples of the application and are not intended to limit the scope of the application.

[0051] It will be understood that when an element or layer is referred to as being "on" or "connected to" another element or layer, it can be directly on or connected to the other element or layer or intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements or layers present. It will be understood that, although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present application. Similarly, a second element, component, region, layer or section discussed below could be termed a first element, component, region, layer or section without departing from the teachings of the present application.

[0052] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0053] It should be noted that the terms "first", "second", and so on in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. 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 does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0054] In this application, when referring to a numerical interval (i.e., a numerical range), the distribution of the selectable values within the numerical interval is considered continuous and includes both numerical endpoints (i.e., the minimum and maximum values) of the numerical interval and every numerical value between the two numerical endpoints, unless otherwise specified. When a numerical interval refers only to integers within the numerical interval, including both endpoint integers and every integer between the two endpoint integers, it is equivalent to directly listing each integer, unless otherwise specified. When multiple numerical ranges are provided to describe a feature or characteristic, the numerical ranges can be combined. In other words, unless otherwise indicated, numerical ranges disclosed in this application are to be understood to include any and all sub-ranges subsumed therein. A "numerical interval" can be any quantitative interval, such as a numerical interval, a percentage interval, a ratio interval, and the like.

[0055] The embodiment of the present application provides a photovoltaic support testing device. Based on this, the technical parameters in the actual application of the photovoltaic support are tested, so that accurate and effective technical parameters can be provided for the application of the mandrel in the photovoltaic support, the structural risk is reduced, and the reliability of the mandrel itself is increased. See later.

[0056] In the following, exemplary embodiments according to the present application will be described in more detail, by referring to the enclosed drawings. It is to be understood that these exemplary embodiments can be carried out in various different forms and should not be interpreted as being limited to the embodiments set forth herein.

[0057] Referring to Figures 1 to 5 The embodiment of the present application provides a photovoltaic support testing device, which comprises a base frame and a pressure loading assembly. The following is described in detail:

[0058] The base frame is the basic structure of the photovoltaic support testing device, which is used to provide fixing, stabilizing and supporting capabilities to avoid the deviation of the photovoltaic support during the test and affect the test parameters.

[0059] Specifically, the base frame comprises a bottom frame 11, a support assembly 13 and a bearing rod 15.

[0060] The bottom frame 11 is used to bear the main beam 92 and the mandrel 91 to simulate the condition that the mandrel 91 is installed on the ground. When it is necessary to move the photovoltaic support testing device, the whole photovoltaic support testing device can be moved by lifting the bottom frame 11.

[0061] The support assembly 13 can be two, and the two support assemblies 13 are respectively fixed to the two ends of the bottom frame 11, which is used to provide support for the bearing rod 15, so as to ensure that the bearing rod 15 can keep a fixed position during the test, avoiding the test error caused by unstable support.

[0062] The bearing rod 15 is connected between two support assemblies 13, and is used to provide a force base point for the pressure loading assembly.

[0063] The pressure loading assembly is connected between the bearing rod 15 and the main beam 92, and is used to apply a preset pressure to the main beam 92, so as to simulate the stress of the photovoltaic support, such as simulating the case that the photovoltaic support bears the gravity of the photovoltaic panel, the case that the photovoltaic panel presses the photovoltaic support under the influence of wind, the case that the photovoltaic support is pulled upward by the wind, etc. In some embodiments, the preset pressure applied by the pressure loading assembly can be controlled by the control terminal.

[0064] When testing the photovoltaic support, the mandrel 91 can be fixed on the bottom frame 11 of the base frame, and the main beam 92 is fixed on the two sides of the mandrel 91, so as to simulate the case that the photovoltaic support is fixed on an external structure. At this time, the preset pressure can be applied to the main beam 92 by the pressure loading assembly, so as to simulate various parameters and service life of the photovoltaic support under the influence of different environments.

[0065] For example, the preset pressure can be kept constant to simulate the gravity of the photovoltaic panel, so as to test the service life of the photovoltaic support. The preset pressure can also be adjusted according to actual conditions, and can be used to simulate the case that the photovoltaic support bears the gravity of the photovoltaic panel, the case that the photovoltaic support bears the gravity of the photovoltaic panel and the wind pressure, etc. The preset pressure can also be adjusted to accelerate the testing process and shorten the testing time.

[0066] The preset pressure can also be gradually increased until the photovoltaic support is deformed destructively, so as to test the ultimate bearing capacity and compression strength of the photovoltaic support. After the photovoltaic support is deformed destructively, the deformation characteristics and deformation area of the photovoltaic support when reaching the ultimate bearing capacity can be observed, so as to find the weak links and design defects of the photovoltaic support.

[0067] Further, in the embodiment, the main beam 92 includes a first section 921 and a second section 922, and the first section 921 and the second section 922 are respectively connected to the opposite sides of the mandrel 91.

[0068] The pressure loading assembly is two, one of which is connected to the first section 921, and the other of which is connected to the second section 922.

[0069] The two pressure loading assemblies are respectively connected to the first section 921 and the second section 922, and can independently apply pressure to the first section 921 and the second section 922, so as to more accurately simulate the case that the photovoltaic support bears the pressure of the photovoltaic panel. The pressure on the two sides of the mandrel 91 can also be adjusted respectively, so as to simulate the stress condition when the photovoltaic panel is inclined, and thus more accurate testing can be performed.

[0070] In this embodiment, the pressure loading assembly includes a telescopic assembly and a fixing sleeve.

[0071] One end of the telescopic assembly is fixed to the load bearing rod 15. The fixing sleeve is fixed to the end of the telescopic assembly away from the load bearing rod 15 and is sleeved outside the main beam 92. The telescopic assembly can be extended or shortened to apply a preset pressure to the main beam 92.

[0072] Specifically, the fixing sleeve is detachably sleeved on the outer wall of the main beam 92, so that the telescopic assembly can be stably fixed outside the main beam 92 when the pressure is applied, preventing displacement or loosening during the application of pressure. After the test is completed, the main beam 92 can be detached from the fixing sleeve to change the test object, etc.

[0073] During the test, the telescopic assembly can be extended to apply a downward pressure to simulate the weight of the photovoltaic panel and other vertical loads on the photovoltaic support. To test the load bearing capacity and stability of the photovoltaic support under normal working conditions and other index parameters.

[0074] The telescopic assembly can also be shortened to generate an upward tension to pull the photovoltaic support in the opposite direction to simulate the situation when the photovoltaic support is blown upward by strong wind. To simulate the various index parameters of the photovoltaic support under extreme weather conditions, so as to evaluate the structural strength and wind resistance of the photovoltaic support.

[0075] In some embodiments, the telescopic assembly can also be quickly extended and shortened to simulate the dynamic load changes of the photovoltaic support in actual use, to evaluate the response of the support under frequent changes of wind pressure. In order to analyze the fatigue performance and service life of the photovoltaic support.

[0076] Specifically, as shown in Figure 2 The telescopic assembly includes a drive electric cylinder 211 and a telescopic shaft 212. The drive electric cylinder 211 is fixed to the load bearing rod 15, and the telescopic shaft 212 is connected between the drive electric cylinder 211 and the fixing sleeve. The drive electric cylinder 211 is used to drive the telescopic shaft 212 to extend or retract.

[0077] The drive electric cylinder 211 can control the automatic extension and retraction of the telescopic shaft 212 to accurately adjust the applied pressure or tension through the control terminal, improving the efficiency and accuracy of the test.

[0078] In other embodiments, the drive electric cylinder 211 can also be replaced by other structures that can provide stable power sources, such as hydraulic cylinders, air cylinders, gear transmissions, etc.

[0079] In an optional embodiment, the load bearing rod 15 is provided with a sliding rail 151 extending in the length direction, and the sliding rail 151 is provided with a pulley assembly 153 that can slide along the length direction of the sliding rail 151.

[0080] Correspondingly, in the case of two pressure loading assemblies, the pulley assembly 153 can also be two, one pulley assembly 153 drives one pressure loading assembly to move, so as to adjust the force arm when the pressure loading assembly presses the main beam 92.

[0081] The pulley assembly 153 is also fixedly connected with the pressure loading assembly, and the pulley assembly 153 is used to drive the pressure loading assembly to slide, so as to adjust the connection position of the pressure loading assembly with the main beam 92. By changing the connection position, the force arm of the main beam 92 can be accurately controlled to simulate the stress condition of the photovoltaic support under different force arms and loads and obtain various parameter indexes of the photovoltaic support.

[0082] In an optional embodiment, referring to Figure 1 and Figure 4 , the bottom frame 11 includes a rectangular frame, and the rectangular frame includes opposite first and second long sides 111 and 112.

[0083] The support assembly 13 includes first and second support rods 131 and 132. The first end of the first support rod 131 is fixed to the first long side 111, and the second end of the first support rod 131 is connected to the load-bearing rod 15. The first end of the second support rod 132 is fixed to the second long side 112, and the second end of the second support rod 132 is connected to the load-bearing rod 15. The first and second support rods 131 and 132 are inclined toward each other to form a triangular support for the load-bearing rod 15.

[0084] The triangular support structure formed by the first and second support rods 131 and 132 can effectively improve the stability of the load-bearing rod 15 and enhance the load-bearing capacity of the entire base frame, so that the photovoltaic support testing device can maintain good stability during testing.

[0085] Specifically, the rectangular frame can be a hollow rectangular frame, and a crossbar can be connected between the first and second long sides 111 and 112. The crossbar can be used to strengthen the overall strength of the rectangular frame, or to provide support for other structures or assemblies, such as supporting the mandrel 91, supporting the rotary drive assembly 30, etc.

[0086] In a preferred embodiment, the photovoltaic support testing device further includes a rotary drive assembly 30 and a torque and speed instrument 40, which are described in detail below:

[0087] The rotary drive assembly 30 is installed on the bottom frame 11 and connected to one end of the main beam 92, and is used to drive the main beam 92 to rotate axially. The rotary drive assembly 30 is used to simulate the dynamic rotation of the photovoltaic support according to the direction of light in actual use.

[0088] The torque speed meter 40 is connected in series between the rotary drive assembly 30 and the main beam 92, and is used to test the torque of the main beam 92 when rotating.

[0089] Specifically, the rotary drive assembly 30 and the pressure loading assembly can be matched for testing to test the torque and other index parameters of the photovoltaic support when rotating axially under pressure. The return drive device can be connected in series with the torque speed meter 40 through a shaft coupling, and the torque speed meter 40 can also be connected in series with the end of the main beam 92 through another shaft coupling. The shaft coupling can effectively transmit the torque generated by the return drive device to the main beam 92.

[0090] Illustratively, the pressure loading assembly can load the photovoltaic support with the pressure of the photovoltaic panel combined with the wind pressure, while the rotary drive assembly 30 drives the main beam 92 to rotate axially to simulate the rotation of the photovoltaic support according to the direction of the light. The torque speed meter 40 then monitors the rotating torque of the main beam 92 of the photovoltaic support in real time during the test process to obtain the torque required for the rotation of the photovoltaic support and other indicators.

[0091] Further, please refer to Figures 1 to 3 In order to reduce the influence of the friction between the fixing sleeve and the main beam 92 on the test data, in the embodiment, the fixing sleeve includes a connecting block 231, a first magnetic pole ring sleeve 233, and a second magnetic pole ring sleeve 235. The connecting block 231 is fixedly connected to the end of the telescopic shaft 212.

[0092] The first magnetic pole ring sleeve 233 is fixed to the end of the connecting block 231 away from the telescopic shaft 212, and has a first through hole. The second magnetic pole ring sleeve 235 is accommodated in the first through hole and is sleeved on the outer wall of the main beam 92. The inner wall of the first through hole and the outer wall of the second magnetic pole ring sleeve 235 have the same magnetic pole. For example, the inner wall of the first through hole is N-pole, and the outer wall of the second magnetic pole ring sleeve 235 is also N-pole.

[0093] The connecting block 231 serves as a medium for connecting the first magnetic pole ring sleeve 233 and the telescopic shaft 212. In some embodiments, the connecting block 231 and the first magnetic pole ring sleeve 233 can be an integral structure to enhance overall stability and simplify the installation process, avoiding the influence of the test results due to the loosening of the connection point.

[0094] The second magnetic pole ring 235 is accommodated in the first through hole of the first magnetic pole ring 233. Since the inner wall of the first through hole and the outer wall of the second magnetic pole ring 235 have the same magnetic pole, the second magnetic pole ring 235 is suspended in the first through hole of the first magnetic pole ring 233 due to the repulsion generated by the same magnetic pole. When the pressure loading assembly exerts pressure on the main beam 92, the first magnetic pole ring 233 and the second magnetic pole ring 235 do not come into physical contact. When the main beam 92 rotates axially, the first magnetic pole ring 233 and the second magnetic pole ring 235 do not generate frictional force, so as not to affect the test results of the torque speed instrument 40.

[0095] Further, please refer to Figure 1 , refer to Figure 5 In the embodiment, the photovoltaic support test device further comprises a hinge support 60 and a connecting piece 70. The hinge support 60 is fixed to the bottom frame 11, and an arc groove is arranged on the hinge support 60. One end of the connecting piece 70 is fixedly connected to the end of the main beam 92, and the other end is provided with a spherical protrusion 71 which is at least partially accommodated in the arc groove.

[0096] Specifically, one end of the connecting piece 70 can be inserted into the inner wall of the main beam 92 to be clamped with the main beam 92. One end of the main beam 92 is rotatably fixed to the base frame through the hinge support 60 and the connecting piece 70, so that when the limiting rotary drive assembly 30 drives the main beam 92 to rotate, the shaking deviation of the main beam 92 is reduced, and the accuracy of the torque test results of the main beam 92 is improved.

[0097] Specifically, the arc groove and the spherical protrusion 71 have high lubrication, thereby reducing the influence of the frictional force of the spherical protrusion 71 rotating in the arc groove on the torque test.

[0098] In an optional embodiment, the photovoltaic support test device further comprises a temperature sensor 50 which is arranged on the mandrel 91 and is used to detect the temperature of the mandrel 91 when the mandrel 91 rotates.

[0099] The temperature sensor 50 can be arranged on the outer wall of the mandrel 91 to monitor the temperature generated by the mandrel 91 due to friction and load when the main beam 92 rotates axially. The temperature data can be used to evaluate the performance of the photovoltaic support under actual working conditions, for example, to analyze the influence of the heating of the mandrel 91 on the service life of the mandrel 91 under high load or high speed conditions. In some tests, the speed at which the rotary drive assembly 30 drives the main beam 92 to rotate can also be accelerated (for example, several times the conventional speed), so as to accelerate the speed of the service life test of the mandrel 91 and shorten the test time.

[0100] The following is a comprehensive example description in combination with the above embodiments.

[0101] When the photovoltaic support is tested for strength, the rotary drive assembly 30 does not drive the main beam 92, and only controls the extension or shortening of the telescopic shaft 212 to provide corresponding pressure or tension load, thereby simulating the limit bending moment and shear force of the photovoltaic support.

[0102] When the photovoltaic support is tested for friction, the telescopic shaft 212 can be controlled to extend or shorten to provide corresponding pressure or tension load, and then the main beam 92 is driven to rotate by the rotary drive assembly 30, and the torque-time curve is output by the torque speed meter 40 to obtain the friction torque of the mandrel 91.

[0103] When the photovoltaic support is tested for service life, the terminal can be controlled to set the pre-set pressure applied by the pressure loading assembly, the rotation speed of the rotary drive assembly 30 and the running time, and the temperature sensor 50 is used to monitor the temperature of the mandrel 91 in real time to monitor the heating condition of the mandrel 91, so as to determine whether the mandrel 91 meets the design requirements (such as service life, etc.).

[0104] It should be noted that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The orientation words "inner" and "outer" refer to the inner and outer of the contour of each component itself. For example, if the device in the drawing is inverted, the device described as "above" or "above" other devices or structures will be positioned "below" or "below" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0105] It should also be noted that "one embodiment", "another embodiment", "embodiment" and the like in the present application refer to the specific features, structures or characteristics described in conjunction with the embodiment, which are included in at least one embodiment described in the general description of the present application. The same expression appears in several places in the specification does not necessarily refer to the same embodiment. Further, when a specific feature, structure or characteristic is described in conjunction with any embodiment, it is claimed that the implementation of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present application.

[0106] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0107] It should be further noted that the above is only the preferred embodiment of the present application, and does not limit the patent protection scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A photovoltaic racking test apparatus for testing performance metrics of a photovoltaic racking, the photovoltaic racking comprising a mandrel and a main beam, the main beam being mounted to a side end of the mandrel and being axially rotatable, the apparatus comprising: a test fixture configured to be coupled to the main beam; a test fixture actuator configured to axially rotate the test fixture; and a test fixture sensor configured to measure a performance metric of the photovoltaic racking. The photovoltaic support testing device comprises: a base frame comprising: a bottom frame for bearing the main beam and the mandrel; a support assembly fixed to opposite ends of the bottom frame, respectively; a bearing rod spanning between the two support assemblies; a pressure loading assembly connected between the bearing rod and the main beam for applying a preset pressure to the main beam.

2. The photovoltaic racking test device of claim 1, wherein, The main beam comprises a first section and a second section, which are connected to opposite sides of the mandrel, respectively; The pressure loading assembly is two, one of which is connected to the first section, and the other is connected to the second section.

3. The photovoltaic rack test device of claim 2, wherein, The pressure loading assembly comprises: a telescopic assembly fixed to one end of the bearing rod; a fixed sleeve fixed to the end of the telescopic assembly away from the bearing rod and sleeved on the outside of the main beam; wherein the telescopic assembly can be extended or shortened to apply a preset pressure to the main beam.

4. The photovoltaic rack test device of claim 3, wherein, The telescopic assembly comprises a drive electric cylinder fixed to the bearing rod and a telescopic shaft connected between the drive electric cylinder and the fixed sleeve, and the drive electric cylinder is used to drive the telescopic shaft to extend or retract.

5. The photovoltaic rack test device of claim 4, wherein, The bearing rod is provided with a sliding rail extending in the length direction, and the sliding rail is provided with a pulley assembly slidable in the length direction of the sliding rail; The pulley assembly is also fixedly connected with the pressure loading assembly, and the pulley assembly is used to drive the pressure loading assembly to slide.

6. The photovoltaic rack test device of claim 4, wherein, The photovoltaic support testing device further comprises: a rotary drive assembly installed on the bottom frame and connected with one end of the main beam for driving the main beam to rotate axially; a torque speed instrument connected in series between the rotary drive assembly and the main beam for testing the torque of the main beam when rotating.

7. The photovoltaic rack test device of claim 6, wherein, The fixed sleeve comprises: a connecting block fixedly connected with the end of the telescopic shaft; a first magnetic pole ring sleeve fixed to the end of the connecting block away from the telescopic shaft and having a first through hole; a second magnetic pole ring sleeve accommodated in the first through hole and sleeved on the outer wall of the main beam; wherein the inner wall of the first through hole and the outer wall of the second magnetic pole ring sleeve have the same magnetic pole.

8. The photovoltaic rack test device of claim 7, wherein, The photovoltaic support testing device further comprises: a hinged support fixed to the bottom frame, the hinged support being provided with an arc concave groove; a connecting piece having one end fixedly connected with the end of the main beam and the other end provided with a spherical protrusion, the spherical protrusion being at least partially accommodated in the arc concave groove.

9. The photovoltaic rack testing apparatus of claim 6, wherein, The photovoltaic support testing device further comprises a temperature sensor for being installed on the mandrel and for detecting the temperature of the mandrel when rotating.

10. The photovoltaic racking test device of any of claims 1-9, wherein, The bottom frame comprises a rectangular frame comprising opposite first and second long sides; The support assembly comprises: a first support rod having a first end fixed to the first long side and a second end connected to the bearing rod; a second support rod having a first end fixed to the second long side and a second end connected to the bearing rod; wherein the first and second support rods are inclined towards the side closer to each other to form a triangular support for the bearing rod.

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