Photovoltaic module IV test machine clamping device

Abstract

The utility model relates to the technical field of IV testing machines, in particular to a photovoltaic module I V testing machine clamping device. According to the technical scheme, the device comprises a main machine shell frame assembly and a main machine vertical support assembly arranged on the outer side of the main machine shell frame assembly, a bottom rail cross beam is arranged on the lower portion of the front face of the main machine shell frame assembly, and a plurality of evenly-distributed bottom rail assembly supporting blocks are arranged at the upper end of the bottom rail cross beam; side sliding rails are arranged at the left end and the right end of the main machine shell frame assembly, transverse shaft side supporting pieces are arranged on the outer sides of the two side sliding rails, transverse shaft supporting angle aluminum is arranged on the front faces of the transverse shaft side supporting pieces, transverse shaft guide rails are arranged at the upper ends of the transverse shaft supporting angle aluminum, and sliding blocks are arranged on the inner walls of the transverse shaft guide rails. According to the utility model, up-and-down and left-and-right multi-dimensional clamping constraint can be realized, shaking or deviation of the assembly in the test process can be effectively avoided, the position stability of the photovoltaic assembly in the test period is ensured, and a solid guarantee is provided for the stability of electrical connection.

Description

Technical Field

[0001] This utility model relates to the field of IV testing machine technology, and in particular to a clamping device for a photovoltaic module IV testing machine. Background Technology

[0002] In the current booming solar energy industry, the photovoltaic module IV tester, as a core piece of equipment for evaluating photovoltaic module performance, is of paramount importance. This specialized equipment, through precise measurement of current-voltage curves, can accurately determine several key parameters of photovoltaic modules, such as maximum power point, open-circuit voltage, short-circuit current, fill factor, and conversion efficiency. These data play a decisive role in quality control during the production process and in the final performance evaluation of photovoltaic modules. Among the many components of the photovoltaic module IV tester, the clamping device is arguably the most crucial. It bears the heavy responsibility of fixing and connecting the photovoltaic modules. Only by ensuring a stable electrical connection between the photovoltaic modules and the tester during testing, and with precise positioning, can the accuracy and reliability of the test data be guaranteed. Therefore, the design quality and performance of the clamping device directly affect the accuracy and efficiency of the test. Existing photovoltaic module IV testing machines mostly use a single-direction movable clamping block to hold and fix the photovoltaic module in one direction. This simple clamping design cannot provide stable constraint on the photovoltaic module in multiple dimensions, making it prone to shaking or displacement during testing. This displacement not only significantly reduces the stability of electrical connections but also seriously interferes with the accuracy of test data, thus affecting the evaluation of the photovoltaic module's true performance and greatly hindering the quality control and performance optimization of photovoltaic modules. Therefore, this utility model proposes a clamping device for a photovoltaic module IV testing machine. Utility Model Content

[0003] The purpose of this invention is to address the problem that in the background art, the clamping method of photovoltaic module IV testing machines mostly uses a single-direction movable clamp to clamp and fix the photovoltaic module in a single direction. This simple clamping design cannot form a stable constraint on the photovoltaic module in multiple dimensions, which easily causes the photovoltaic module to shake or shift during the test. This displacement of the photovoltaic module not only greatly reduces the stability of the electrical connection, but also seriously interferes with the accuracy of the test data, thereby affecting the evaluation of the true performance of the photovoltaic module and greatly hindering the production quality control and performance optimization of photovoltaic modules. Therefore, this invention proposes a clamping device for photovoltaic module IV testing machines.

[0004] The technical solution of this utility model: A clamping device for a photovoltaic module IV tester, comprising a main unit housing frame assembly; a main unit vertical support assembly disposed outside the main unit housing frame assembly; a bottom track beam disposed on the lower front of the main unit housing frame assembly; a plurality of evenly distributed bottom track component support blocks disposed on the upper end of the bottom track beam; side slide rails disposed at both the left and right ends of the main unit housing frame assembly; a transverse axis side support member disposed on the outer side of each of the two side slide rails; a transverse axis support angle aluminum disposed on the front of the transverse axis side support member; and a transverse axis on the upper end of the transverse axis support angle aluminum. The guide rail has a slider on its inner wall; a first mounting bracket is fixedly mounted on the outer side of the bottom track beam, and a first hinge seat is provided on the front of the first mounting bracket. The first hinge seat is hinged to a first hinge handle via a hinge shaft, and a first clamping block is provided at the upper end of the first hinge handle; a second mounting bracket is mounted on the slider, and a second hinge seat is provided on the front of the second mounting bracket. The second hinge seat is hinged to a second hinge handle via a hinge shaft, and a second clamping block is provided at the lower end of the second hinge handle. The photovoltaic module is clamped by the first clamping block and the second clamping block.

[0005] Optionally, the back of the side slide rail is provided with a vertical side mold rack, and the end face of the horizontal axis side support is provided with a first side fixed rack mounting bracket. The first side fixed rack mounting bracket is hinged to a first elbow clamp via a hinge shaft. The end face of the first elbow clamp is provided with a first side fixed rack. The first side fixed rack meshes with the vertical side mold rack. The lower part of the horizontal axis side support is provided with a longitudinal motor. The left end of the main unit housing frame assembly is provided with a side shaft drag chain tray, and a side shaft drag chain is provided inside the side shaft drag chain tray.

[0006] Optionally, an inductive proximity switch is provided on the end face of the transverse axis support.

[0007] Optionally, the bottom track beam contacts the side slide rail, and the end face of the bottom track beam is provided with a second side fixed rack mounting bracket. The second side fixed rack mounting bracket is hinged to a second elbow clamp via a hinge shaft. The end face of the second elbow clamp is provided with a second side fixed rack, and the second side fixed rack meshes with the vertical side mold rack.

[0008] Optionally, a tray slide rail is provided on the side of the upper frame of the main unit vertical support assembly. A first tray is provided on the upper part of the tray slide rail, and a first counterweight is provided inside the first tray. The first tray is connected to the bottom track beam by a steel wire rope. A second tray is provided on the lower part of the tray slide rail, and a second counterweight is provided inside the second tray. The second tray is connected to the horizontal axis support angle aluminum by a second steel wire rope. A first double-groove nylon pulley is provided on both the left and right ends of the main unit housing frame assembly, and a second double-groove nylon pulley is provided on the top frame of the upper frame of the main unit vertical support assembly.

[0009] Optionally, a front frame caster is provided on the front side of the lower frame of the main unit vertical support assembly, and a rear frame caster is provided on the rear side of the lower frame of the main unit vertical support assembly. Both the front and rear frame casters are brakeable casters.

[0010] Optionally, the front of the main unit housing frame assembly is provided with a glass tabletop, and the surface of the glass tabletop is treated with an anti-slip coating.

[0011] Optionally, the upper end of the host housing frame assembly is provided with an upper cooling fan unit, which includes multiple cooling fans arranged in a matrix.

[0012] Optionally, the clamping surfaces of the first clamping block and the second clamping block are provided with rubber pads, and the surface of the rubber pads is provided with anti-slip textures.

[0013] Optionally, a lubrication layer is provided between the horizontal guide rail and the slider, and the lubrication layer is a graphite lubrication layer.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] This utility model uses a bottom track beam as a basic support structure. The bottom track component support blocks evenly distributed at the upper end provide a solid guarantee for the overall stability. The first hinge seat and hinge shaft are connected to the first hinge handle, which allows the first clamping block to flexibly adjust its position and provide lower clamping force. At the same time, in conjunction with the side slide rails at both ends of the main body shell frame assembly, the outer horizontal axis side support, the horizontal axis support angle aluminum, the horizontal axis guide rail and the slider, a movable horizontal clamping structure is formed. The second mounting bracket is set on the slider and is connected to the second hinge handle through the second hinge seat and hinge shaft, which drives the second clamping block to clamp the photovoltaic module from above and the side. It can clamp and constrain the module in multiple dimensions from top to bottom and left to right, effectively preventing the module from shaking or shifting during the test and ensuring the stability of the test process.

[0016] Furthermore, this utility model utilizes the contact and cooperation between the bottom track beam and the side slide rail, and the inductive proximity switch on the horizontal axis side support can monitor the structural position status in real time, ensuring that the clamping structure is always in the optimal working state. The main unit vertical support assembly is connected to the bottom track beam through the tray slide rail, the first tray, the first counterweight, and the first steel wire rope, and to the horizontal axis support angle aluminum through the second tray, the second counterweight, and the second steel wire rope. With the help of the first and second double-groove nylon pulleys, smooth traction and gravity balance of each moving part are achieved, reducing vibration interference caused by component movement, keeping the photovoltaic module absolutely stable during testing, avoiding displacement, and thus ensuring stable electrical connection. This greatly reduces interference with test data, significantly improves the accuracy of test data, and provides strong support for accurately evaluating the true performance of photovoltaic modules. Attached Figure Description

[0017] Figure 1 A perspective view of a clamping device for a photovoltaic module IV tester is provided.

[0018] Figure 2 for Figure 1 A top-down structural diagram;

[0019] Figure 3 for Figure 1 A side view of the structure;

[0020] Figure 4 for Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 5 for Figure 2 Enlarged structural diagram at point B;

[0022] Figure 6 for Figure 2 Enlarged structural diagram at point C;

[0023] Figure 7 for Figure 3 Enlarged structural diagram at point D;

[0024] Figure 8 for Figure 2 Enlarged structural diagram at point E in the middle.

[0025] Figure label:

[0026] 1. Main unit casing frame assembly;

[0027] 2. Main unit vertical support assembly; 211. Tray slide rail; 222. First tray; 233. First counterweight; 244. Second tray; 255. Second counterweight; 266. First double-groove nylon pulley; 277. Second double-groove nylon pulley;

[0028] 3. Front casters of the rack; 4. Rear casters of the rack; 5. Glass tabletop; 6. Upper cooling fan unit;

[0029] 7. Bottom track crossbeam; 71. Second side fixed rack mounting bracket; 72. Second elbow clamp; 73. Second side fixed rack;

[0030] 8. Bottom track assembly support block; 9. First mounting bracket; 10. First hinge seat; 11. First hinge handle; 12. First clamping block; 13. Side slide rail;

[0031] 14. Horizontal axis side support; 141. Vertical side mold rack; 142. First side fixed rack mounting bracket; 143. First elbow clamp; 144. First side fixed rack; 145. Longitudinal motor; 146. Side axis cable chain disc; 147. Side axis cable chain; 148. Inductive proximity switch;

[0032] 15. Horizontal axis support angle aluminum; 16. Horizontal axis guide rail; 17. Slider; 18. Second mounting bracket; 19. Second hinge seat; 20. Second hinge handle; 21. Second clamping block. Detailed Implementation

[0033] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0034] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0035] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Example

[0039] As 1 to Figure 5 As shown, the photovoltaic module IV tester clamping device proposed in this utility model includes a main body shell frame assembly 1; a main body vertical support assembly 2 disposed on the outside of the main body shell frame assembly 1; a bottom track beam 7 is disposed on the lower front of the main body shell frame assembly 1; and a plurality of evenly distributed bottom track component support blocks 8 are disposed on the upper end of the bottom track beam 7 to ensure the stability of the track component operation.

[0040] Furthermore, side slide rails 13 are provided at both ends of the main body housing frame assembly 1, and transverse axis side support members 14 are provided on the outer side of both side slide rails 13 to enhance the stability of the device in the transverse direction. An inductive proximity switch 148 is provided on the end face of the transverse axis side support member 14 to detect the position of related components and realize automatic control and safety protection functions. A transverse axis support angle aluminum 15 is provided on the front of the transverse axis side support member 14, and a transverse axis guide rail 16 is provided at the upper end of the transverse axis support angle aluminum 15. A slider 17 is provided on the inner wall of the transverse axis guide rail 16 to guide the movement of the slider 17, so that the components installed on the slider 17 can move accurately in the transverse axis direction. A lubricating layer is provided between the transverse axis guide rail 16 and the slider 17, and the lubricating layer is a graphite lubricating layer to reduce the friction between the transverse axis guide rail 16 and the slider 17 and improve the smoothness of the device operation.

[0041] Secondly, a first mounting bracket 9 is fixedly installed on the outside of the bottom track beam 7. A first hinge seat 10 is provided on the front of the first mounting bracket 9. A first hinge handle 11 is hinged to the first hinge seat 10 through a hinge shaft. A first clamping block 12 is provided at the upper end of the first hinge handle 11. By using the lever principle, the first clamping block 12 is driven to achieve the clamping or releasing action of the photovoltaic module.

[0042] Furthermore, a second mounting bracket 18 is provided on the slider 17. The front of the second mounting bracket 18 is provided with a second hinge seat 19, which serves as a connection and support. The second hinge seat 19 is hinged to a second hinge handle 20 via a hinge shaft. A second clamping block 21 is provided at the lower end of the second hinge handle 20. The photovoltaic module is clamped by the first clamping block 12 and the second clamping block 21. The clamping surfaces of the first clamping block 12 and the second clamping block 21 are provided with rubber pads, and the surface of the rubber pads is provided with anti-slip textures to increase the friction with the photovoltaic module and prevent the photovoltaic module from sliding during the clamping process.

[0043] like Figure 3 , Figure 6 and Figure 7 As shown, vertical side mold racks 141 are respectively provided on the back of the side slide rail 13, which are used to realize the positioning or movement control of related components. The end face of the horizontal axis side support 14 is respectively provided with a first side fixed rack mounting bracket 142, which is used to mount the first side fixed rack 144. The first side fixed rack mounting bracket 142 is hinged to a first elbow clamp 143 via a hinge shaft. The first elbow clamp 143 can control the first side fixed rack 144 through operation. The end face of 143 is provided with a first side fixed rack 144, which meshes with the vertical side mold rack 141. The lower part of the horizontal axis side support 14 is provided with a longitudinal motor 145, which provides power for the longitudinal movement of related components. The left end of the main unit housing frame assembly 1 is provided with a side shaft drag chain disk 146, and a side shaft drag chain 147 is provided inside the side shaft drag chain disk 146. The side shaft drag chain 147 is used to protect and guide cables and other cables so that they can move smoothly during the movement of components.

[0044] like Figure 2 , Figure 4 and Figure 8 As shown, the bottom track beam 7 contacts the side slide rail 13. The end face of the bottom track beam 7 is provided with a second side fixed rack mounting bracket 71. The second side fixed rack mounting bracket 71 is hinged to a second elbow clamp 72 through a hinge shaft. The end face of the second elbow clamp 72 is provided with a second side fixed rack 73. The second side fixed rack 73 meshes with the vertical side mold rack 141.

[0045] like Figure 1 and Figure 2As shown, a tray slide rail 211 is provided on the side of the upper frame of the main unit vertical bracket assembly 2. A first tray 222 is provided on the upper part of the tray slide rail 211. A first counterweight 233 is provided inside the first tray 222. The first tray 222 is connected to the bottom track beam 7 by a steel wire rope. A second tray 244 is provided on the lower part of the tray slide rail 211. A second counterweight 255 is provided inside the second tray 244. The second tray 244 is connected to the horizontal axis support angle aluminum 15 by a steel wire rope. A first double-groove nylon pulley 266 is provided on both the left and right ends of the main unit outer shell frame assembly 1. A second double-groove nylon pulley 277 is provided on the top frame of the upper frame of the main unit vertical bracket assembly 2.

[0046] In addition, the front side of the lower frame of the main unit vertical support assembly 2 is provided with a front frame caster 3, and the rear side of the lower frame of the main unit vertical support assembly 2 is provided with a rear frame caster 4. Both the front frame caster 3 and the rear frame caster 4 are brakeable casters, which facilitates the movement and fixation of the device.

[0047] Specifically, the front of the main unit housing frame assembly 1 is provided with a glass tabletop 5. The surface of the glass tabletop 5 is treated with anti-slip material and is used to place photovoltaic modules to prevent the photovoltaic modules from sliding.

[0048] Finally, an upper cooling fan unit 6 is provided at the upper end of the main unit housing frame assembly 1. The upper cooling fan unit 6 includes multiple cooling fans, and the cooling fan units are arranged in a matrix to dissipate heat from the inside of the device.

[0049] The working principle of this embodiment is as follows: First, hold the second elbow clamp 72 with your hand and push it in the direction that makes the second side fixed rack 73 disengage from the vertical side mold rack 141. During this process, the second elbow clamp 72 drives the second side fixed rack 73 to move through the hinge shaft 4.

[0050] Smoothly push the bottom track beam 7 upwards with both hands. During the movement, constantly monitor the bottom track beam 7 to ensure smooth motion. Stop pushing when the bottom track beam 7 reaches a suitable position that allows for easy placement of the photovoltaic module under test and meets the testing requirements.

[0051] Carefully lift the photovoltaic module to be tested with both hands and place it accurately on the bottom track module support block 8, ensuring that the photovoltaic module is placed stably and centered. Hold the second elbow clamp 72 again and push it in the direction that makes the second side fixing rack 73 re-engage with the vertical side mold rack 141, thereby locking the bottom track beam 7 and preventing it from shifting.

[0052] Push the first elbow clamp 143 by hand, causing it to move the first side fixed rack 144 via the hinge shaft 3 until the first side fixed rack 144 disengages from the vertical side mold rack 141. Push the horizontal axis side support 14 with both hands, moving it downwards. At this time, the horizontal axis side support 14 will slide smoothly along the surface of the side slide rail 13, simultaneously moving the horizontal axis support angle aluminum 15 connected to its front downwards. Continue pushing until the horizontal axis support angle aluminum 15 contacts the photovoltaic module placed on the bottom track assembly support block 8, completing the initial clamping of the photovoltaic module. Push the first elbow clamp 143 again, causing it to move the first side fixed rack 144 until the first side fixed rack 144 re-contacts and engages with the vertical side mold rack 141, thereby locking the horizontal axis side support 14 and ensuring the stability of the horizontal axis support angle aluminum 15.

[0053] Hold the second mounting bracket 18 with both hands and push it to move. The second mounting bracket 18 will cause the slider 17 to slide on the surface of the horizontal guide rail 16. Based on the specific dimensions of the photovoltaic module and its pre-adjusted position, precisely adjust the second clamping block 21 to the appropriate position. Hold the second hinge handle 20 and rotate it towards the photovoltaic module, using the second hinge axis as the axis. This will cause the second clamping block 21 to deflect synchronously until it is in close contact with the photovoltaic module. Hold the first hinge handle 11 and rotate it towards the photovoltaic module, using the first hinge axis as the axis. This will cause the first clamping block 12 to deflect synchronously until it is in close contact with the photovoltaic module. At this point, the first clamping block 12 and the second clamping block 21 work together to achieve final clamping of the photovoltaic module, ensuring good clamping stability.

[0054] By adjusting the quantity of the first counterweight 233 in the first tray 222 and the quantity of the second counterweight 255 in the second tray 244, it is ensured that the bottom track beam 7 and the horizontal axis support aluminum 15 will not experience excessive displacement throughout the entire process of clamping the photovoltaic module. During the adjustment process, the suitability of the counterweights can be determined by observing the positional changes of the bottom track beam 7 and the horizontal axis support aluminum 15. If necessary, the quantity of counterweights can be finely adjusted multiple times.

[0055] Ensure that the first double-groove nylon pulley 266 and the second double-groove nylon pulley 277 are in normal working condition. They can play a good guiding role for the first wire rope connecting the first tray 222 to the bottom track beam 7 and the second wire rope connecting the second tray 244 to the horizontal axis support aluminum 15, so as to ensure that the first tray 222 and the second tray 244 remain stable during movement.

[0056] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A clamping device for a photovoltaic module IV tester, comprising a main body housing frame assembly (1), characterized in that: The host vertical bracket assembly (2) is located on the outside of the host housing frame assembly (1). The lower front part of the host housing frame assembly (1) is provided with a bottom track beam (7). The upper end of the bottom track beam (7) is provided with a plurality of evenly distributed bottom track component support blocks (8). Side slide rails (13) are provided at both ends of the main body shell frame assembly (1). A horizontal axis side support (14) is provided on the outer side of each of the two side slide rails (13). A horizontal axis support angle aluminum (15) is provided on the front of the horizontal axis support (14). A horizontal axis guide rail (16) is provided at the upper end of the horizontal axis support angle aluminum (15). A slider (17) is provided on the inner wall of the horizontal axis guide rail (16). A first mounting bracket (9) is fixedly installed on the outside of the bottom track beam (7). A first hinge seat (10) is provided on the front of the first mounting bracket (9). A first hinge handle (11) is hinged to the first hinge seat (10) through a hinge shaft. A first clamping block (12) is provided at the upper end of the first hinge handle (11). The second mounting bracket (18) is set on the slider (17). The front of the second mounting bracket (18) is provided with a second hinge seat (19). The second hinge seat (19) is hinged to a second hinge handle (20) through a hinge shaft. The lower end of the second hinge handle (20) is provided with a second clamping block (21). The photovoltaic module is clamped by the first clamping block (12) and the second clamping block (21).

2. The photovoltaic module IV tester clamping device according to claim 1, characterized in that, The back of the side slide rail (13) is provided with a vertical side mold rack (141), and the end face of the horizontal axis side support (14) is provided with a first side fixed rack mounting bracket (142). The first side fixed rack mounting bracket (142) is hinged to a first elbow clamp (143) through a hinge shaft. The end face of the first elbow clamp (143) is provided with a first side fixed rack (144). The first side fixed rack (144) meshes with the vertical side mold rack (141). The lower part of the horizontal axis side support (14) is provided with a longitudinal motor (145). The left end of the main body housing frame assembly (1) is provided with a side shaft drag chain disk (146). The side shaft drag chain disk (146) is provided with a side shaft drag chain (147).

3. The photovoltaic module IV tester clamping device according to claim 2, characterized in that, An inductive proximity switch (148) is provided on the end face of the transverse axis support (14).

4. The photovoltaic module IV tester clamping device according to claim 1, characterized in that, The bottom track beam (7) contacts the side slide rail (13). The end face of the bottom track beam (7) is provided with a second side fixed rack mounting bracket (71). The second side fixed rack mounting bracket (71) is hinged to a second elbow clamp (72) via a hinge shaft. The end face of the second elbow clamp (72) is provided with a second side fixed rack (73). The second side fixed rack (73) meshes with the vertical side mold rack (141).

5. The photovoltaic module IV tester clamping device according to claim 1, characterized in that, The upper frame of the main unit vertical support assembly (2) is provided with a tray slide rail (211) on the side. The upper part of the tray slide rail (211) is provided with a first tray (222). The first tray (222) is provided with a first counterweight (233) inside. The first tray (222) is connected to the bottom track beam (7) by a steel wire rope. The lower part of the tray slide rail (211) is provided with a second tray (244). The second tray (244) is provided with a second counterweight (255) inside. The second tray (244) is connected to the horizontal axis support angle aluminum (15) by a steel wire rope. The left and right ends of the main unit shell frame assembly (1) are provided with first double groove nylon pulleys (266). The top frame of the upper frame of the main unit vertical support assembly (2) is provided with a second double groove nylon pulley (277).

6. The photovoltaic module IV tester clamping device according to claim 1, characterized in that, The front side of the lower frame of the main unit vertical support assembly (2) is provided with a frame front caster (3), and the rear side of the lower frame of the main unit vertical support assembly (2) is provided with a frame rear caster (4). Both the frame front caster (3) and the frame rear caster (4) are brakeable casters.

7. The photovoltaic module IV tester clamping device according to claim 1, characterized in that, The front of the main unit housing frame assembly (1) is provided with a glass tabletop (5), and the surface of the glass tabletop (5) is treated with anti-slip treatment.

8. The photovoltaic module IV tester clamping device according to claim 1, characterized in that, The upper end of the host housing frame assembly (1) is provided with an upper cooling fan unit (6), which includes multiple cooling fans and is arranged in a matrix.

9. The photovoltaic module IV tester clamping device according to claim 1, characterized in that, The clamping surfaces of the first clamping block (12) and the second clamping block (21) are provided with rubber pads, and the surface of the rubber pads is provided with anti-slip texture.

10. A photovoltaic module IV testing machine clamping device according to claim 1, characterized in that, A lubrication layer is provided between the horizontal guide rail (16) and the slider (17), and the lubrication layer is a graphite lubrication layer.

Images