A photovoltaic inverter safety test platform

Abstract

The present invention relates to the field of test platforms, in particular to a safety test platform for a photovoltaic inverter, which includes a test component, comprising a support platform, a DC motor set arranged on the left side of the support platform, an AC motor set arranged on the right side of the support platform, an inverter body arranged on the support platform, a plurality of female plugs arranged on the inverter body, a plurality of wires arranged on the DC motor set and the AC motor set, and test plugs arranged on the plurality of wires; a plugging and unplugging component, comprising a positioning component arranged on the support platform, a lifting component arranged on the positioning component, a moving component arranged on the positioning component, and an adjusting component arranged on the moving component. The device of the present invention can simultaneously perform the plugging and unplugging of multiple test plugs, and can adjust the number and position of the test plugs. At the same time, when the test plugs are not in use, dust prevention of the test plugs can also be carried out.

Description

Technical Field

[0001] The invention relates to the field of testing platforms, in particular to a photovoltaic inverter safety testing platform. Background Art

[0002] The photovoltaic inverter can convert the variable DC voltage generated by the photovoltaic solar panels into AC power at the mains frequency. The voltage is transmitted through wires. A socket is provided on the photovoltaic inverter to fix the photovoltaic inverter and the wires. The most common plug is the MC4 connector. Before leaving the factory, safety testing is required to avoid virtual connection of the wires in the MC4 connector (when the connection is virtual, the current increases, which can easily cause a fire) and to detect whether there is a short circuit or open circuit inside the photovoltaic inverter.

[0003] During the safety inspection process, the common method is to connect the photovoltaic inverter to the circuit to make the photovoltaic inverter work. At this time, the male and female plugs of the MC4 connector need to be docked. The common method in the prior art is to manually insert the male plug into the female plug. Since a large number of male plugs are inserted or unplugged in each experiment, the time required is long, which affects the efficiency of the experiment. In addition, each time the male plug is unplugged, it is necessary to press the spring on the male plug to unplug it. After pressing it many times, the worker will feel pain in his hands. Summary of the invention

[0004] In view of the problem in the above or prior art that when conducting photovoltaic inverter testing, a large number of male plugs are inserted or unplugged in each experiment, which takes a long time and affects the experimental efficiency, and each time the male plug is manually unplugged, it is necessary to press the spring piece on the male plug to unplug it. After the worker presses it many times, it will cause the worker's hand pain, the present invention is proposed.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a test component, including a support platform, a DC motor group arranged on the left side of the support platform, an AC motor group arranged on the right side of the support platform, an inverter body arranged on the support platform, a plurality of female plugs arranged on the inverter body, a plurality of wires arranged on the DC motor group and the AC motor group, and a test plug arranged on the plurality of wires; a plug-in component, comprising a positioning component arranged on the support platform, a lifting component arranged on the positioning component, a moving component arranged on the positioning component, an adjustment component arranged on the moving component, a locking component arranged on the adjustment component, and an identification component arranged on the moving component; a closing component, comprising a pushing component arranged on the moving component, a guiding component arranged on the pushing component, and a closing component arranged on the moving component.

[0006] As a preferred solution of the photovoltaic inverter safety test platform of the present invention, wherein: the positioning assembly includes a bottom plate arranged on the support platform, two L-shaped plates are arranged on the bottom plate, side plates are fixedly connected to the side walls of the two L-shaped plates, wing plates are fixedly connected to the side plates, two first electric sliding rails are arranged on the support platform, and first sliders fixed to the L-shaped plates are slidably connected to the first electric sliding rails.

[0007] As a preferred solution of the photovoltaic inverter safety test platform of the present invention, wherein: the lifting assembly includes an installation groove arranged on the support platform, the upper end and the right end of the installation groove are open, a cylinder is fixedly connected to the inner wall of the installation groove, and the telescopic end of the cylinder is fixedly connected to the bottom plate.

[0008] As a preferred solution of the photovoltaic inverter safety test platform of the present invention, wherein: the moving assembly includes a second electric sliding rail arranged on the support platform, a second slider is slidably connected to the second electric sliding rail, a mounting plate is fixedly connected to the second slider, a plurality of openings are arranged on the mounting plate, all the test plugs are located in the openings, a ring is fixedly connected to the openings, and the wire passes through the ring.

[0009] As a preferred solution of the photovoltaic inverter safety test platform of the present invention, wherein: the adjustment assembly includes a push rod fixedly connected to the test plug, a round hole for the push rod to pass through is arranged on the ring, and a push ring is fixedly connected to the push rod.

[0010] As a preferred solution of the photovoltaic inverter safety test platform of the present invention, wherein: the clamping assembly includes a plurality of mounting cylinders with both ends open and rotatably connected to the mounting plate, a transverse groove is arranged on the inner wall of the mounting cylinder, an arc groove is communicated with the transverse groove, and a clamping block matched with the transverse groove is fixedly connected to the push rod.

[0011] As a preferred solution of the photovoltaic inverter safety test platform of the present invention, wherein: the marking assembly includes a plurality of frame selection areas arranged on the mounting plate, the plurality of frame selection areas divide the plurality of openings into a plurality of areas, grooves are arranged on the edges of the plurality of frame selection areas, different color fluorescent layers are filled in the plurality of grooves, and identification plates are arranged in the frame selection areas.

[0012] As a preferred solution of the photovoltaic inverter safety test platform of the present invention, wherein: the pushing assembly includes a plurality of support cavities arranged on the mounting plate, a sliding rod is slidably connected in the support cavity, the sliding rod penetrates through the support cavity and is fixedly connected to the push ring.

[0013] As a preferred solution of the photovoltaic inverter safety test platform of the present invention, wherein: the guiding assembly includes a rotating cylinder rotatably connected to the inner wall of the support cavity, a threaded groove is provided on the inner wall of the rotating cylinder, straight grooves are communicated with both the left and right ends of the threaded groove, the straight groove at the right end penetrates the rotating cylinder, and a guiding ball cooperating with the straight groove and the threaded groove is fixedly connected to the sliding rod.

[0014] As a preferred solution of the photovoltaic inverter safety test platform of the present invention, wherein: the closing assembly includes a gear fixedly connected to the side wall of the rotating cylinder, a plurality of extension grooves communicating with the opening are provided on the mounting plate, two closing plates are slidably connected in the extension grooves, an L-shaped strip is fixedly connected to the closing plate, and a toothed plate meshing with the gear is fixedly connected to the L-shaped strip.

[0015] The beneficial effects of the photovoltaic inverter safety test platform of the present invention: By setting the test components and the plug-in components, when testing the inverter, multiple test plugs can be inserted and removed simultaneously, thereby improving the test efficiency. During the insertion and removal process, there is no elastic piece, so there is no need to press the elastic piece, avoiding damage to the health of workers. At the same time, the test plugs can be retracted, and the number and protruding positions of the required test plugs can be selected according to needs, with flexible use. In addition, a closing component is provided, which can automatically close the opening when the test plugs are not in use, preventing dust from entering the test plugs and affecting subsequent use. Thus, it solves the problems that during the detection of photovoltaic inverters, due to the large number of male plugs inserted or removed in each experiment, the required time is long, affecting the experimental efficiency, and when manually removing the male plugs each time, the elastic piece on the male plug needs to be pressed to remove it, which will cause hand pain to the workers after multiple presses. It achieves the effect of automatically inserting and removing multiple test plugs simultaneously and automatically dust-proofing the test plugs when they are not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic external structure diagram of the photovoltaic inverter safety test platform.

[0018] Figure 2 It is a schematic cross-sectional structure diagram of the support platform of the photovoltaic inverter safety test platform.

[0019] Figure 3 It is a schematic external structure diagram of the positioning assembly of the photovoltaic inverter safety test platform.

[0020] Figure 4 It is a schematic diagram of the external structure of the identification component of the photovoltaic inverter safety test platform.

[0021] Figure 5 It is a schematic diagram of the external structure of the clamping component of the photovoltaic inverter safety test platform.

[0022] Figure 6 It is a sectional view of the pushing component of the photovoltaic inverter safety test platform.

[0023] Figure 7 It is a schematic sectional view of the closing component of the photovoltaic inverter safety test platform.

[0024] Figure 8 For Figure 7 A magnified schematic diagram of the structure at location A.

[0025] Figure 9 It is a schematic sectional view of the guiding component of the photovoltaic inverter safety test platform.

[0026] Figure 10 It is an exploded view of the guiding component of the photovoltaic inverter safety test platform.

[0027] In the figure: 100, test component; 101, support platform; 102, DC generator set; 103, AC generator set; 104, inverter body; 105, female plug; 106, wire; 107, test plug; 200, mating component; 201, positioning component; 201a, bottom plate; 201b, L-shaped plate; 201c, side plate; 201d, wing plate; 201e, first electric slide rail; 201f, first slider; 202, lifting component; 202a, installation groove; 202b, cylinder; 203, moving component; 203a, second electric slide rail; 203b, second slider; 203c, mounting plate; 203d, opening; 203e, ring; 204, adjustment component; 204a, push rod; 204b, push ring; 205, clamping component; 205a, mounting cylinder; 205b, horizontal groove; 205c, arc groove; 205d, clamping block; 206, identification component; 206a, frame selection area; 206b, groove; 206c, fluorescent layer; 206d, identification plate; 300, closing component; 301, pushing component; 301a, support cavity; 301b, slide rod; 302, guiding component; 302a, rotating cylinder; 302b, thread groove; 302c, straight groove; 302d, guiding ball; 303, closing component; 303a, gear; 303b, extension groove; 303c, closing plate; 303d, L-shaped strip; 303e, toothed plate. Specific embodiments

[0028] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following provides a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings of the specification.

[0029] Example 1, referring to Figures 1 to 7 , which is the first embodiment of the present invention. This embodiment provides a photovoltaic inverter safety test platform that can automatically insert and remove multiple test plugs 107, improving the test efficiency. It includes a test component 100, which includes a support table 101, a DC motor set 102 disposed on the left side of the support table 101, an AC motor set 103 disposed on the right side of the support table 101, an inverter body 104 disposed on the support table 101, multiple female plugs 105 disposed on the inverter body 104, multiple wire materials 106 disposed on the DC motor set 102 and the AC motor set 103, and test plugs 107 disposed on the multiple wire materials 106; a mating component 200, which includes a positioning component 201 disposed on the support table 101, a lifting component 202 disposed on the positioning component 201, a moving component 203 disposed on the positioning component 201, an adjustment component 204 disposed on the moving component 203, a clamping component 205 disposed on the adjustment component 204, and an identification component 206 disposed on the moving component 203; a closing component 300, which includes a pushing component 301 disposed on the moving component 203, a guiding component 302 disposed on the pushing component 301, and a closing component 303 disposed on the moving component 203.

[0030] Specifically, the DC motor set 102 here can be connected to a solar panel or directly simulate the direct current generated by a solar panel. The AC motor set 103 can store and transmit alternating current. Both the DC motor set 102 and the AC motor set 103 here are prior arts and will not be elaborated here. During use, the test plugs 107 on the wire materials 106 of the DC motor set 102 and the AC motor set 103 are simultaneously docked with the female plugs 105 on the inverter body 104. It should be noted that different from a male plug, there is no elastic piece on the test plug 107 here, and the phenomenon that the test plug 107 cannot be separated from the female plug 105 will not occur.

[0031] Further, the positioning component 201 includes a bottom plate 201a arranged on the support platform 101. Two L-shaped plates 201b are provided on the bottom plate 201a. Side plates 201c are fixedly connected to the side walls of the two L-shaped plates 201b. Wing plates 201d are fixedly connected to the side plates 201c. Two first electric slide rails 201e are provided on the support platform 101. First sliders 201f fixed to the L-shaped plates 201b are slidably connected to the first electric slide rails 201e. The lifting component 202 includes an installation groove 202a arranged on the support platform 101. The upper end and the right end of the installation groove 202a are open. A cylinder 202b is fixedly connected to the inner wall of the installation groove 202a. The telescopic end of the cylinder 202b is fixedly connected to the bottom plate 201a.

[0032] Wherein, the length of the bottom plate 201a here is less than the width of the opening 203d, so that a small part of the inverter body 104 extends to the outside of the bottom plate 201a, facilitating the docking of the test plug 107 and the female plug 105 after the bottom plate 201a is lifted. The bottom plate 201a here can be lifted, so that the height of the female plug 105 can be adjusted, facilitating the alignment of the test plug 107 and the female plug 105.

[0033] Preferably, the moving component 203 includes a second electric slide rail 203a arranged on the support platform 101. A second slider 203b is slidably connected to the second electric slide rail 203a. A mounting plate 203c is fixedly connected to the second slider 203b. A plurality of openings 203d are provided on the mounting plate 203c. A plurality of test plugs 107 are all located in the openings 203d. A ring 203e is fixedly connected in the openings 203d. The wire 106 passes through the ring 203e. The adjusting component 204 includes a push rod 204a fixedly connected to the test plug 107. A round opening for the push rod 204a to pass through is provided on the ring 203e. A push ring 204b is fixedly connected to the push rod 204a. The clamping component 205 includes a plurality of open-ended mounting cylinders 205a rotatably connected to the mounting plate 203c. A transverse groove 205b is provided on the inner wall of the mounting cylinder 205a. An arc groove 205c is communicated with the transverse groove 205b. A clamping block 205d cooperating with the transverse groove 205b is fixedly connected to the push rod 204a.

[0034] It should be noted that the first electric slide rail 201e and the second electric slide rail 203a are perpendicular to each other. The thickness of the mounting plate 203c here is greater than the length of the test plug 107, so that the test plug 107 can be completely located in the opening 203d. The inner diameter of the ring 203e is greater than the diameter of the wire 106, so that the phenomenon that the wire 106 cannot pass through the ring 203e will not occur. When the clamping block 205d is aligned with the transverse groove 205b, the push rod 204a can slide left and right without restriction.

[0035] In use, first place the inverter body 104 on two L-shaped plates 201b. When placing the inverter body 104 on the L-shaped plates 201b, make the side wall of the inverter body 104 abut against the vertical side of the L-shaped plates 201b. Here, due to the setting of the wing plates 201d, when the inverter body 104 is placed on the L-shaped plates 201b, it can guide the inverter body 104. When the inverter body 104 is placed on the L-shaped plates 201b, the first electric slide rail 201e is activated, causing the two first sliding plates to move towards the middle, so that the two L-shaped plates 201b move towards the middle, causing the two side plates 201c to move towards the middle and clamping the inverter body 104 between the two side plates 201c. At the same time, the vertical side wall of the L-shaped plate 201b abuts against the front end of the inverter. Then, according to the model of the inverter body 104, select the required test plug 107. When pushing out the test plug 107, just press the ring 203e, causing the ring 203e to move towards the mounting plate 203c. At this time, the push rod 204a pushes the test plug 107 to move, causing the test plug 107 to be pushed out of the opening 203d. When the push rod 204a moves, the block 205d moves. At this time, the horizontal groove 205b is aligned with the block 205d, and the movement of the block 205d is not affected. When the test plug 107 is completely pushed out, the block 205d enters the arc groove 205c. At this time, rotate the mounting cylinder 205a to misalign the horizontal groove 205b and the block 205d, which can prevent the block 205d from automatically resetting and the push rod 204a from automatically resetting, ensuring that the test plug 107 is outside the opening 203d (there is friction between the block 205d and the inner wall of the arc groove 205c, thus preventing the block 205d from self-sliding and ensuring the stability of the block 205d). When all the required test plugs 107 are pushed out, if the test plug 107 still does not correspond to the female plug 105, start the cylinder 202b to lift and lower the bottom plate 201a, driving the inverter body 104 to lift and lower, so as to adjust the height of the inverter body 104 and adjust the height of the female plug 105. When the required test plug 107 is aligned with the female plug 105, start the second electric slide rail 203a to make the second slider 203b move towards the inverter body 104. At this time, the mounting plate 203c moves towards the inverter body 104, causing the test plug 107 to be inserted into the female plug 105. At this time, start the DC motor set 102 and the AC motor set 103 to test the inverter body 104. When the test shows normal, it means there is no short circuit and no virtual connection, indicating that the inverter is safe. Then, the second electric slide rail 203a is activated to reset the second slider 203b, driving the mounting plate 203c to reset, so that multiple test plugs 107 are reset, completing the safety test of a single inverter body 104.

[0036] In summary, by providing a timing component and a plug-in component 200, when there is an internal short circuit or loose connection in the inverter body 104, the plugging and unplugging of multiple test plugs 107 can be automatically performed, eliminating the need for manual plugging and unplugging of multiple test plugs 107, avoiding hand pain for workers pressing the elastic piece, and improving the test time by performing the plugging and unplugging of multiple test plugs 107 simultaneously.

[0037] Embodiment 2, referring to Figures 1 to 4 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides an identification component 206 for the photovoltaic inverter safety test platform, which solves the problem of correctly selecting the test plug 107 according to different models of the inverter body 104. It includes an identification component 206, which includes a plurality of frame selection areas 206a provided on the mounting plate 203c. The plurality of frame selection areas 206a divide the plurality of openings 203d into multiple areas. Grooves 206b are provided at the edges of the plurality of frame selection areas 206a, and different colored fluorescent layers 206c are filled in the plurality of grooves 206b. Identification plates 206d are provided in the frame selection areas 206a, and the model is displayed on the identification plates 206d here. According to the cooperation of the identification plates 206d and the frame selection areas 206a, the area where the test plug 107 needs to be pushed out can be correctly selected, making the use simpler (here it means that there is no need to specifically find the corresponding wire 106, and the test plug 107 can be quickly pushed out).

[0038] When in use, when it is necessary to push out the test plug 107, first observe the identification plate 206d to find the area corresponding to the model of the inverter body 104, and then push out the test plug 107 existing in the area corresponding to the identification plate 206d. The setting of the fluorescent layer 206c here facilitates the distinction of the area boundaries, and when there is an intersection of areas, the test plug 107 in the corresponding area can also be accurately found.

[0039] In summary, by providing the identification component 206, when pushing out the test plug 107, only need to find the identification plate 206d corresponding to the model of the inverter body 104, and then push out the test plug 107 existing in the area corresponding to the identification plate 206d, then the test plug 107 can be correctly pushed out, making the operation simpler.

[0040] Embodiment 3, referring to Figures 1 to 10, which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a closed component 300 of the photovoltaic inverter safety test platform, which solves the problem of how to prevent the unused test plug 107 from getting dusty and affecting subsequent detections. It includes a pushing component 301, which includes a plurality of support cavities 301a provided on the mounting plate 203c. A sliding rod 301b is slidably connected in the support cavity 301a. The sliding rod 301b penetrates through the support cavity 301a and is fixedly connected to the pushing ring 204b. The guiding component 302 includes a rotating cylinder 302a rotatably connected to the inner wall of the support cavity 301a. A threaded groove 302b is provided on the inner wall of the rotating cylinder 302a. Straight grooves 302c are communicated with both the left and right ends of the threaded groove 302b. The right straight groove 302c penetrates through the rotating cylinder 302a. A guiding ball 302d that cooperates with the straight groove 302c and the threaded groove 302b is fixedly connected to the sliding rod 301b. The closing component 303 includes a gear 303a fixedly connected to the side wall of the rotating cylinder 302a. A plurality of extension slots 303b communicated with the opening 203d are provided on the mounting plate 203c. Two closing plates 303c are slidably connected in the extension slots 303b. An L-shaped strip 303d is fixedly connected to the closing plate 303c. A toothed plate 303e meshing with the gear 303a is fixedly connected to the L-shaped strip 303d.

[0041] Specifically, the distance between the extension slot 303b and the ring 203e is greater than the length of the test plug 107, so there is a gap between the extension slot 303b and the test plug 107, ensuring there is enough distance for the closing plate 303c to open and close, and avoiding collision between the test plug 107 and the closing plate 303c. Here, the two toothed plates 303e are respectively located at the upper and lower ends of the gear 303a. When the gear 303a rotates, the moving directions of the two toothed plates 303e are opposite (that is, the two closing plates 303c move towards the middle or towards both sides simultaneously).

[0042] It should be explained that when the test plug 107 is not in use (especially when testing a batch of inverters, the test may last for several days), it is inevitable that dust will enter the opening 203d. After the dust enters the opening 203d, it is also easy to enter the test plug 107, which is likely to cause static electricity and dust, affecting the test results.

[0043] During use, first, test the plug 107 within the opening 203d. The two closing plates 303c are fitted together to close the opening 203d. At this time, dust prevention for the test plug 107 can be achieved. Here, an elastic plug can be provided on the inner wall of the ring 203e to prevent dust from entering through the gap between the ring 203e and the wire 106. When the ring 203e is pushed, the push rod 204a moves, and at the same time, it will drive the slide rod 301b to move. When the slide rod 301b moves, the guide ball 302d on the slide rod 301b moves from the straight groove 302c to the threaded groove 302b. When the guide ball 302d moves into the threaded groove 302b, there is still a gap between the test plug 107 and the closing plate 303c. Then, as the slide rod 301b moves, the guide ball 302d cooperates with the threaded groove 302b to drive the rotating cylinder 302a to rotate, so that the gear 303a rotates, driving the two toothed plates 303e to move towards both ends, thereby driving the two closing plates 303c to open. At this time, the test plug 107 can move to the outside of the opening 203d. When the opening 203d is opened, the guide ball 302d moves into the straight groove 302c, and the rotating cylinder 302a does not rotate, so that the phenomenon of the gear 303a and the toothed plate 303e being disengaged does not occur.

[0044] In summary, by providing the closing assembly, when the test plug 107 is not in use, the closing plate 303c closes the opening 203d to prevent dust from entering the test plug 107. During the test, only by pushing the ring 203e, the opening 203d can be opened first and then the test plug 107 can be opened, which is convenient for use while protecting the test plug 107.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A photovoltaic inverter safety test platform, characterized in that: include, The test component includes a support platform, a DC motor group arranged on the left side of the support platform, an AC motor group arranged on the right side of the support platform, an inverter body arranged on the support platform, a plurality of female plugs arranged on the inverter body, a plurality of wires arranged on the DC motor group and the AC motor group, and a test plug arranged on the plurality of wires; The plug-in component includes a positioning component arranged on the support platform, a lifting component arranged on the positioning component, and a moving component arranged on the positioning component, wherein the moving component includes a second electric slide rail arranged on the support platform, a second slider is slidably connected to the second electric slide rail, a mounting plate is fixedly connected to the second slider, a plurality of openings are arranged on the mounting plate, a plurality of the test plugs are located in the openings, a circular ring is fixedly connected in the openings, and the wire passes through the circular ring; An adjustment component disposed on the moving component, a locking component disposed on the adjustment component, and an identification component disposed on the moving component; The closing component includes a pushing component arranged on the moving component, a plurality of supporting cavities arranged on the mounting plate, a guiding component arranged on the pushing component, a plurality of rotating cylinders rotatably connected to the inner walls of the supporting cavities, and a closing component arranged on the moving component, wherein the closing component includes a gear fixedly connected to the side wall of the rotating cylinder, a plurality of expansion slots connected to the opening are arranged on the mounting plate, two closing plates are slidably connected in the expansion slots, an L-shaped strip is fixedly connected to the closing plate, and a toothed plate meshing with the gear is fixedly connected to the L-shaped strip.

2. The photovoltaic inverter safety test platform according to claim 1, characterized in that: The positioning assembly includes a base plate arranged on a support platform, two L-shaped plates are provided on the base plate, side walls of the two L-shaped plates are fixedly connected with side plates, wing plates are fixedly connected with the side plates, and two first electric slide rails are provided on the support platform, and a first slider fixed to the L-shaped plate is slidably connected to the first electric slide rail.

3. The photovoltaic inverter safety test platform according to claim 2, characterized in that: The lifting assembly comprises a mounting groove arranged on the support platform, the upper end and the right end of the mounting groove are open, a cylinder is fixedly connected to the inner wall of the mounting groove, and the telescopic end of the cylinder is fixedly connected to the bottom plate.

4. The photovoltaic inverter safety test platform according to claim 3, characterized in that: The adjustment assembly comprises a push rod fixedly connected to the test plug, the circular ring is provided with a circular opening for the push rod to pass through, and the push rod is fixedly connected to a push ring.

5. The photovoltaic inverter safety test platform according to claim 4, characterized in that: The clamping assembly includes a plurality of mounting tubes with both ends open and rotatably connected to the mounting plate, a transverse groove is arranged on the inner wall of the mounting tube, an arc groove is connected to the transverse groove, and a clamping block matching with the transverse groove is fixedly connected to the push rod.

6. The photovoltaic inverter safety test platform according to claim 4 or 5, characterized in that: The identification component includes a plurality of frame selection areas arranged on the mounting plate, the plurality of frame selection areas divide the plurality of openings into a plurality of areas, the edges of the plurality of frame selection areas are provided with grooves, the plurality of grooves are filled with fluorescent layers of different colors, and an identification plate is provided in the frame selection area.

7. The photovoltaic inverter safety test platform according to claim 3, characterized in that: The pushing assembly comprises a sliding rod slidably connected to the supporting cavity, the sliding rod penetrates the supporting cavity and is fixedly connected to the pushing ring.

8. The photovoltaic inverter safety test platform according to claim 7, characterized in that: The guide assembly includes a threaded groove arranged on the inner wall of the rotating drum, the left and right ends of the threaded groove are connected with a straight groove, the straight groove at the right end passes through the rotating drum, and a guide ball that cooperates with the straight groove and the threaded groove is fixedly connected to the slide rod.

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