Testing mechanism for photovoltaic inverter

Abstract

The utility model discloses a testing mechanism for a photovoltaic inverter, which comprises an outer frame, a testing console is arranged on the outer frame, an inner frame is arranged in the outer frame, a slot is arranged in the side wall of the inner frame, a lifting device is arranged in the inner frame, a supporting plate is arranged in the slot in a sliding manner, the photovoltaic inverter is arranged on the supporting plate, and the photovoltaic inverter is arranged on the photovoltaic inverter. A clamping and fixing device is arranged on the side, close to the inner frame, of the upper end of the supporting plate, a pressing and fixing device is arranged on the top of the inner frame, and the test console is in line connection with the photovoltaic inverter through a test connecting line. The utility model belongs to the technical field of optical inverter detection, and particularly solves the problems that in the prior art, when a large-scale photovoltaic inverter is detected and tested, an inverter body is inconvenient to lift and fix, so that the detection efficiency is not high, the detection cost is low, and the like. And the test mechanism for the photovoltaic inverter is easy to collide and loosen wiring.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic inverter detection, and specifically refers to a test mechanism for a photovoltaic inverter. Background Art

[0002] An inverter is an electrical device that converts direct current electrical energy (batteries, accumulators) into alternating current. A photovoltaic inverter is a type of inverter that can convert the variable direct current voltage generated by photovoltaic solar panels into alternating current with the frequency of the commercial power grid. It is an important component of the photovoltaic solar panel power generation matrix. The interior of a photovoltaic inverter includes various precision components such as an inverter bridge, control logic, and filter circuits. To ensure that the photovoltaic inverter can be used normally after leaving the factory, the factory needs to use detection equipment to conduct circuit power supply detection on the photovoltaic inverter after the production and assembly of the photovoltaic inverter are completed. To facilitate the detection of the photovoltaic inverter, the detection personnel use alligator clips to briefly connect the lines for detection.

[0003] However, there are some deficiencies in this detection method: when wiring the inverter, it is easy to be collided, resulting in the phenomenon of loose wiring, which affects the progress of detection. There is a lack of fixing measures for the inverter, and the detection interfaces of some large and heavy inverters are located at the bottom, which is inconvenient for wiring and testing. Therefore, improvements are needed. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that in the prior art, when detecting and testing a large photovoltaic inverter, it is not convenient to lift the inverter body and not convenient to fix the inverter body, resulting in low detection efficiency and easy occurrence of the phenomenon of loose wiring due to collision.

[0005] To achieve the above functions, the technical solution adopted by the utility model is as follows: a test mechanism for a photovoltaic inverter, including an outer frame, a test console is provided on the outer frame, an inner frame is provided inside the outer frame, a slot is provided in the side wall of the inner frame, a lifting device is provided inside the inner frame, a support plate is slidably provided in the slot, a photovoltaic inverter is provided on the support plate, a clamping and fixing device is provided on the upper end of the support plate near one side of the inner frame, a pressing and fixing device is provided on the top of the inner frame, and the test console is connected to the photovoltaic inverter through a test connection line; the lifting device includes a motor, the motor is provided on the top of the inner frame, a first bevel gear is provided at the output end of the motor, a lead screw is rotatably provided in the slot, an ear plate is provided on the side wall of the support plate and is threadedly connected to the lead screw, a second bevel gear is provided at the upper end of the lead screw and is meshed with the first bevel gear. Through the lifting device, the photovoltaic inverter can be lifted to facilitate the bottom wire connection test of the heavy photovoltaic inverter.

[0006] Furthermore, the clamping and fixing device includes a fixing plate which is arranged on the upper end surface of the pallet. An electric push rod is provided on the fixing plate, and a limiting plate is arranged at the output end of the electric push rod. The limiting plate can clamp the photovoltaic inverter, and the clamping device can be used to assist in fixing the photovoltaic inverter.

[0007] Furthermore, the pressing and fixing device includes a hydraulic cylinder which is located at the top of the inner frame. A pressing plate is arranged at the output end of the hydraulic cylinder and is located directly above the photovoltaic inverter. The top of the photovoltaic inverter can be fixed by the pressing plate, so that the photovoltaic inverter can be fixed comprehensively, and the phenomenon of loose wiring caused by collision and shaking during the test can be avoided.

[0008] Preferably, a guide rod is arranged in the slot, and the guide rod penetrates through the ear plate. The width of the ear plate is equal to the width of the slot.

[0009] Preferably, the motor is a double-shaft motor, and the arrangement of the lead screw can ensure that the ear plates on both sides can be lifted and lowered synchronously.

[0010] Preferably, the test console is electrically connected to the motor and the electric push rod for signal control, and the test console is signal-connected to the hydraulic cylinder.

[0011] The beneficial effects of the present utility model adopting the above structure are as follows:

[0012] 1. The present utility model can lift a heavy large photovoltaic inverter to a certain height through the lifting device, so as to facilitate the connection with the bottom of the photovoltaic inverter through the test connection wire.

[0013] 2. The present utility model can clamp and fix the side of the photovoltaic inverter through the clamping device, and can fix the top of the photovoltaic inverter with the help of the pressing and fixing device, so as to ensure that the photovoltaic inverter is relatively stable during the test and guarantee the test effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall three-dimensional view of a test mechanism for a photovoltaic inverter of the present utility model;

[0015] Figure 2 is the three-dimensional view of the lifting device of a test mechanism for a photovoltaic inverter of the present utility model;

[0016] Figure 3 is Figure 1 the three-dimensional view of the limiting plate in

[0017] Among them, 1. Outer frame, 2. Test console, 3. Inner frame, 4. Groove, 5. Lifting device, 6. Pallet, 7. Photovoltaic inverter, 8. Clamping device, 9. Test connection line, 10. Pressing and fixing device, 11. Motor, 12. First bevel gear, 13. Lead screw, 14. Ear plate, 15. Second bevel gear, 16. Fixed plate, 17. Electric push rod, 18. Limit plate, 19. Hydraulic cylinder, 20. Pressure plate, 21. Guide rod. Specific implementation mode

[0018] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0020] As Figures 1-3 , a test mechanism for a photovoltaic inverter of the present utility model includes an outer frame 1, a test console 2 is provided on the outer frame 1, an inner frame 3 is provided inside the outer frame 1, a groove 4 is provided in the side wall of the inner frame 3, a lifting device 5 is provided inside the inner frame 3, a pallet 6 is slidably provided in the groove 4, a photovoltaic inverter 7 is provided on the pallet 6, a clamping and fixing device is provided on one side of the upper end of the pallet 6 close to the inner frame 3, a pressing and fixing device 10 is provided on the top of the inner frame 3, the test console 2 is line-connected to the photovoltaic inverter 7 through a test connection line 9, the test console 2 is electrically signal-controlled and connected to the motor 11 and the electric push rod 17, and the test console 2 is signal-connected to the hydraulic cylinder 19;

[0021] As Figure 2, the lifting device 5 includes a motor 11. The motor 11 is arranged at the top of the inner frame 3. The motor 11 is a double-shaft motor 11. The setting of the lead screw 13 can ensure that the ear plates 14 on both sides can be lifted synchronously. A first bevel gear 12 is arranged at the output end of the motor 11. A lead screw 13 is rotatably arranged in the slot 4. An ear plate 14 is arranged on the side wall of the support plate 6 and is threadedly connected to the lead screw 13. A guide rod 21 is arranged in the slot 4. The guide rod 21 passes through the ear plate 14. The width of the ear plate 14 is equal to the width of the slot 4. A second bevel gear 15 is arranged at the upper end of the lead screw 13 and is meshed and connected to the first bevel gear 12. Through the lifting device 5, the photovoltaic inverter 7 can be lifted to facilitate the bottom wire connection test of the heavy photovoltaic inverter 7.

[0022] As Figure 1 and 3 , the clamping and fixing device includes a fixing plate 16. The fixing plate 16 is arranged on the upper end surface of the support plate 6. An electric push rod 17 is arranged on the fixing plate 16. A limiting plate 18 is arranged at the output end of the electric push rod 17. The limiting plate 18 can clamp the photovoltaic inverter 7. Through the clamping device 8, the photovoltaic inverter 7 can be assisted in fixing.

[0023] As Figure 1 , the pressing and fixing device 10 includes a hydraulic cylinder 19. The hydraulic cylinder 19 is located at the top of the inner frame 3. A pressing plate 20 is arranged at the output end of the hydraulic cylinder 19 and is located directly above the photovoltaic inverter 7. Through the pressing plate 20, the top of the photovoltaic inverter 7 can be fixed, so that the photovoltaic inverter 7 can be comprehensively fixed to avoid the phenomenon of wire connection loosening due to collision and shaking during the test.

[0024] During specific use, first place the photovoltaic inverter 7 on the support plate 6. By starting the electric push rod 17, the limiting plate 18 can clamp and fix the side wall of the photovoltaic inverter 7. Similarly, the clamping device 8 on the other support plate 6 clamps and fixes the photovoltaic inverter 7. Then start the motor 11. The first bevel gear 12 meshes with the second bevel gear 15 and rotates. The lead screw 13 rotates in the slot 4. The ear plate 14 will drive the support plate 6 to slide on the guide rod 21, and the photovoltaic inverter 7 will be lifted to a certain height. Connect the test connection wire 9 to the photovoltaic inverter 7. Then start the hydraulic cylinder 19. The pressing plate 20 presses and fixes the top of the photovoltaic inverter 7, and then the test can be carried out.

[0025] After the test is completed, lower the photovoltaic inverter 7 to the bottom of the outer frame 1 again to unload the photovoltaic inverter 7.

[0026] The above description is about the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the creation of the present utility model, design without creativity structural modes and embodiments similar to the technical solution, they shall fall within the protection scope of the present utility model.

Claims

1. A testing mechanism for a photovoltaic inverter, comprising an external frame, on which a test console is provided, characterized in that: An inner frame is provided inside the outer frame, a groove is provided in the side wall of the inner frame, a lifting device is provided inside the inner frame, a support plate is slidably provided in the groove, a photovoltaic inverter is provided on the support plate, a clamping device is provided on the upper end of the support plate close to the inner frame, a pressing device is provided on the top of the inner frame, and the test console is connected to the photovoltaic inverter via a test connecting line.

2. A testing mechanism for a photovoltaic inverter according to claim 1, characterized in that: The lifting device includes a motor, which is arranged at the top of the inner frame. The output end of the motor is provided with a bevel gear 1, a screw rod is rotatably provided in the slot, an ear plate is provided on the side wall of the support plate and is threadedly connected to the screw rod, and the upper end of the screw rod is provided with a bevel gear 2 and is meshed with the bevel gear 1.

3. A testing mechanism for a photovoltaic inverter according to claim 2, characterized in that: The clamping and fixing device comprises a fixing plate, which is arranged on the upper end surface of the supporting plate. An electric push rod is arranged on the fixing plate, and a limit plate is arranged at the output end of the electric push rod. The limit plate can clamp the photovoltaic inverter.

4. A testing mechanism for a photovoltaic inverter according to claim 3, characterized in that: The pressing device comprises a hydraulic cylinder, which is located at the top of the inner frame. A pressing plate is provided at the output end of the hydraulic cylinder and is located directly above the photovoltaic inverter.

5. A testing mechanism for a photovoltaic inverter according to claim 4, characterized in that: A guide rod is arranged in the slot, and the guide rod passes through the ear plate, and the width of the ear plate is equal to the width of the slot.

6. A testing mechanism for a photovoltaic inverter according to claim 5, characterized in that: The motor is a double-axis motor, and the arrangement of the lead screw can ensure that the ear plates on both sides can be raised and lowered synchronously.

7. A testing mechanism for a photovoltaic inverter according to claim 6, characterized in that: The test console is connected to the motor and the electric push rod by electrical signal control, and the test console is connected to the hydraulic cylinder signal.

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