Detection device for inverter maintenance and detection method thereof

Abstract

The invention discloses a detection device for inverter maintenance and a detection method thereof, and belongs to the technical field of inverter maintenance detection.The detection device comprises a dustproof disassembly cover and a detection sampling box, the bottom end of the dustproof disassembly cover is connected with a start-stop assembly through a fixing base, and a plurality of bolt mechanical arms are fixedly installed on the inner end face of the dustproof disassembly cover; and two control guide grooves are formed in the left inner side wall and the right inner side wall of the dustproof detachable cover. According to the invention, external oxygen and dust can be prevented from entering the interior of the inverter through the arrangement of the dustproof disassembly cover, the safety of the interior of the inverter after disassembly is ensured, various internal tests can be carried out on the inverter in a state of uninterruptible power supply, and meanwhile, the dust taking assembly is arranged, so that the internal tests can be carried out in a safe dust-free and oxygen-free state. And the dust accumulation amount of the inner wall of the inverter shell is sampled, so that whether overall power-off disassembly cleaning needs to be carried out on the inverter or not can be judged subsequently according to the sampling condition.

Description

Technical Field

[0001] The present invention relates to the technical field of inverter maintenance detection, and in particular to a detection device for inverter maintenance and a detection method thereof. Background Art

[0002] An inverter is an electrical device used to convert direct current into alternating current and is a core device in photovoltaic systems or power conversion.

[0003] During the maintenance of the inverter, it is usually necessary to cut off the power first and then carry out maintenance and repair, which interrupts the use of the inverter. At the same time, in order to ensure the dustproofness of the inverter, routine maintenance and repair are generally only carried out on the external circuits, and the infrared temperature measurement of each part is also carried out through the outer casing, which makes the maintenance and repair efficiency low and the accuracy is also affected. In addition, the inner wall of the inverter shell needs to be cleaned of dust regularly to ensure the heat dissipation effect and the safety of the internal circuit. However, it is difficult to ensure a dust-free environment outdoors after the inverter shell is disassembled, which makes the internal circuit easily contaminated after the inverter shell is disassembled. Based on this, a detection device and a detection method for inverter maintenance are proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to propose a detection device and a detection method for inverter maintenance.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A detection device for inverter maintenance includes a dustproof disassembly cover and a detection sampling box. The bottom end of the dustproof disassembly cover is connected to a start-stop assembly via a fixing seat. A plurality of bolt mechanical arms are fixedly mounted on the inner end surface of the dustproof disassembly cover. Two control guide grooves are formed on the left and right inner side walls of the dustproof disassembly cover. The inner side walls of the control guide grooves are connected to a limiting assembly for limiting the position of the inverter housing after disassembly. The bottom end of the dustproof disassembly cover is connected to an electric control guide rail through a mounting plate, the electric control guide rail is connected to a gear assembly through an electric control slider, the gear assembly is connected to a selected shaft through a sprocket mechanism, the top end of the selected shaft is connected to a positioning assembly for determining the position of the inverter cable, the side wall of the mounting plate is connected to a plurality of line measuring push plates through a limiting slide rail, and the output end of the line measuring push plate is connected to a line measuring assembly; The inner end surface of the detection sampling box is connected to a retaining seat through two electric push rods, and a test semicircular plate is provided on the retaining seat. One side of the test semicircular plate is connected to multiple infrared thermometers and sample storage cameras, and the other side of the test semicircular plate is connected to a dust collection component for sampling the dust accumulation on the inner wall of the inverter housing.

[0006] Preferably, the start-stop assembly includes two traveling wheel mechanisms rotatably arranged at the bottom of the fixed seat, the left and right side walls of the fixed seat are fixedly connected to the hydraulic support seat, the top of the fixed seat is fixedly connected to the dustproof disassembly cover through two hydraulic lifting columns, and the inner end surface of the dustproof disassembly cover is fixedly connected to the positioning suction cup.

[0007] Preferably, the limiting component includes a limiting seat slidably arranged on the inner wall of the control guide groove, the end face of the limiting seat is connected to a plurality of friction rubber columns through a limiting plate, the end face of the limiting seat is provided with a plurality of receiving grooves, and the inner end face of the receiving groove is connected to an arc-shaped limiting plate through an electric control push rod.

[0008] Preferably, the gear assembly includes a fixed rack fixed on the outer side wall of the electric control guide rail, and the electric control slider push rod cross plate is rotatably connected to an adjustment gear meshing with the fixed rack, and the adjustment gear is transmission-connected to the selected shaft through a sprocket mechanism.

[0009] Preferably, the positioning assembly comprises a plurality of pressure sensors fixed to the ends of the selected shafts, and the pressure sensors are connected to elliptical arc plates via hydraulic piston rods.

[0010] Preferably, the line measuring assembly includes two torsion spring shafts rotatably arranged on the output end of the line measuring push plate, the two torsion spring shafts are rotatably connected to two line measuring concave plates respectively, a line pressing capsule is fixedly installed in the groove of the line measuring concave plate, and a distance measuring sensor is connected to the top of the line measuring concave plate.

[0011] Preferably, the top of the line measuring push plate is connected to a following magnetic plate for magnetic attraction with the electric control slider, the top of the line measuring push plate is rotatably connected to a limit wheel, and a tooth pattern corresponding to the limit wheel display screen is provided above the output end of the line measuring push plate, and the limit wheel is fixedly connected to two limit right-angle rods.

[0012] Preferably, a connection groove connected to the detection sampling box is provided on the top of the dustproof disassembly cover, a steering groove for the rotation of the test semicircular plate is provided on the retaining seat, and the retaining seat is fixedly connected to a drive motor, and the drive motor is fixedly connected to the test semicircular plate through a rotating shaft.

[0013] Preferably, the dust collection assembly consists of an oblique sampling cover and a resistance push rod, the test semicircular plate is fixedly connected to the oblique sampling cover through the resistance push rod, the test semicircular plate is fixedly connected to a micro air pump, and the micro air pump is connected to multiple oblique sampling covers through a capillary hose.

[0014] A detection method comprises the following steps: S1. Inverter housing disassembly and dust-free storage: Control the bolting robot arm to remove the bolts on the inverter housing. Activate the electric control push rod in the limiting seat, push out the arc limit plate to press the inner wall of the inverter housing, and clamp the housing together with the friction rubber column. Slide the limiting seat along the control guide groove to move the disassembled inverter housing and store it in the dust-proof disassembly cover to maintain a closed, dust-proof and oxygen-proof environment. S2. Cable Position Identification and Wiring Test: A selected axis drives multiple hydraulic piston rods and the elliptical arc plates at their ends to rotate at the bottom of the inverter. When the elliptical arc plates contact the ends of cables, the pressure sensor is triggered, recording the current position as the cable position. The two measuring concave plates on the measuring push plate contact the cables, simulating the force applied to the cables. The position and wiring status of all cables at the bottom of the inverter are checked one by one. S3. Inverter internal status detection and dust sampling on the inner wall of the casing: The infrared thermometer scans and measures the temperature of the exposed components inside the inverter to obtain temperature data under the working state. The sampling camera is used to record the status of the internal components of the inverter. The drive motor is controlled to rotate the test semicircular plate so that the side with the dust collection component faces the inner wall of the stored inverter casing. The oblique sampling hood is used to scrape and absorb the dust attached to the inner wall of the casing to complete the sampling of the dust accumulation amount.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This solution prevents external oxygen and dust from entering the inverter through the provision of a dustproof disassembly cover, ensuring the safety of the inverter after disassembly. It also allows various internal tests to be performed without disconnecting the inverter from power.

[0016] 2. This solution uses the line measurement component to determine the position of each cable at the bottom of the inverter by taking advantage of the pressure on the elliptical arc plate. This facilitates subsequent testing of the wiring conditions of each cable one by one, avoiding the problem of difficulty in individual testing when the wiring at the bottom of the inverter is complex.

[0017] 3. This solution uses a dust collection component to sample the dust accumulation on the inner wall of the inverter housing in a safe and dust-free state, making it easier to determine whether the inverter needs to be completely powered off, disassembled, and cleaned based on the sampling results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a detection device for inverter maintenance proposed by the present invention; Figure 2 This is an assembly diagram of a detection device for inverter maintenance proposed by the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a structural schematic diagram of the position of the friction rubber column in the inverter maintenance detection device proposed by the present invention; Figure 5 This is an assembly diagram of the electric control rail in the inverter maintenance detection device proposed by the present invention; Figure 6 This is a structural schematic diagram of a gear assembly in a detection device for inverter maintenance proposed by the present invention; Figure 7 This is a structural schematic diagram of a line measurement component in a detection device for inverter maintenance proposed by the present invention; Figure 8 This is a schematic diagram of the structure of the interior of a detection sampling box in a detection device for inverter maintenance proposed by the present invention; Figure 9 This is a structural schematic diagram of a dust collection component in a detection device for inverter maintenance proposed by the present invention; Figure 10 for Figure 9 Enlarged view of point B in the middle; Figure 11 This is a flow chart of a detection method of a detection device for inverter maintenance proposed by the present invention.

[0019] Figure: 1, dustproof disassembly cover; 2, detection sampling box; 3, travel wheel mechanism; 4, hydraulic support seat; 5, positioning suction cup; 6, bolt mechanical arm; 7, limit seat; 8, friction rubber column; 9, arc limit plate; 10, hydraulic lifting column; 11, electric control guide rail; 12, fixed rack; 13, electric control slider; 14, adjustment gear; 15, sprocket mechanism; 16, selected axis; 17, pressure sensor; 18, hydraulic piston rod; 19, elliptical Arc plate; 20. Limiting slide rail; 21. Line measuring push plate; 22. Following magnetic plate; 23. Torsion spring shaft; 24. Line measuring concave plate; 25. Line pressing capsule; 26. Distance measuring sensor; 27. Limiting wheel; 28. Limiting right-angle rod; 29. ​​Electric push rod; 30. Retaining seat; 31. Driving motor; 32. Test semicircular plate; 33. Infrared thermometer; 34. Sample storage camera; 35. Resistance push rod; 36. Capillary hose; 37. Oblique sampling cover. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0023] Example, see Figures 1 to 11 A detection device for inverter maintenance includes a dustproof disassembly cover 1 and a detection sampling box 2. The bottom end of the dustproof disassembly cover 1 is connected to a start-stop assembly through a fixed seat. A plurality of bolt mechanical arms 6 are fixedly installed on the inner end surface of the dustproof disassembly cover 1. Two control guide grooves are opened on the left and right inner side walls of the dustproof disassembly cover 1. The inner wall of the control guide groove is connected to a limiting assembly for limiting the position of the inverter housing after disassembly. Furthermore, the start-stop assembly includes two traveling wheel mechanisms 3 rotatably arranged at the bottom of the fixed seat, the left and right side walls of the fixed seat are fixedly connected to the hydraulic support seat 4, the top of the fixed seat is fixedly connected to the dustproof disassembly cover 1 through two hydraulic lifting columns 10, and the inner end surface of the dustproof disassembly cover 1 is fixedly connected to the positioning suction cup 5, and the limiting assembly includes a limiting seat 7 slidably arranged on the inner wall of the control guide groove, the end surface of the limiting seat 7 is connected to a plurality of friction rubber columns 8 through a limiting plate, and the end surface of the limiting seat 7 is provided with a plurality of receiving grooves, and the inner end surface of the receiving groove is connected to a curved limit plate 9 through an electric control push rod; It should be noted that: the dustproof disassembly cover 1 is moved to the back shell of the photovoltaic inverter through the travel wheel mechanism 3, and axial alignment is performed. Then, the dustproof disassembly cover 1 is covered and stuck on the back shell of the inverter through the lifting and adjustment of the hydraulic lifting column 10. Then, the dustproof disassembly cover 1 is fixed on the back shell of the inverter by the hydraulic support seat 4. Then, the positioning suction cup 5 is controlled to perform preliminary limiting on the inverter shell. During this process, the bolt robot arm 6 will remove the bolts on the inverter shell, thereby removing the inverter shell. , the limiting seat 7 in the control guide groove slides, so that the limiting plate is pressed against the inverter housing. After removal, the electric control push rod in the limiting seat 7 is used to push out the arc limiting plate 9, so that the arc limiting plate 9 is pressed against the inner wall of the inverter housing, thereby pressing the outer wall of the inverter housing against the multiple friction rubber columns 8, and cooperating with the positioning suction cup 5 to limit the disassembled inverter housing, and then the limiting seat 7 is controlled to slide in the control guide groove to realize the movement and storage of the housing. During this process, the housing slides in the adapted dustproof disassembly cover 1; The benefits mentioned above are: This prevents external oxygen and dust from entering the inverter, ensuring the safety of the inverter after disassembly, and allows various internal tests to be performed without disconnecting the inverter from power. The bottom end of the dustproof disassembly cover 1 is connected to an electric control guide rail 11 through a mounting plate. The electric control guide rail 11 is connected to a gear assembly through an electric control slider 13. The gear assembly is connected to a selection shaft 16 through a sprocket mechanism 15. The top of the selection shaft 16 is connected to a positioning assembly for determining the position of the inverter cable. The side wall of the mounting plate is connected to multiple line measurement push plates 21 through a limit slide rail 20. The output end of the line measurement push plate 21 is connected to a line measurement assembly. Furthermore, the gear assembly includes a fixed rack 12 fixed on the outer wall of the electric control guide rail 11, the electric control slider 13 push rod cross plate is rotatably connected to the adjustment gear 14 meshing with the fixed rack 12, the adjustment gear 14 is connected to the selected shaft 16 through a sprocket mechanism 15, the positioning assembly includes a plurality of pressure sensors 17 fixed to the end of the selected shaft 16, the pressure sensor 17 is connected to the elliptical arc plate 19 through a hydraulic piston rod 18, and the line measurement assembly includes two torque sensors rotatably set on the output end of the line measurement push plate 21. The spring shaft 23 and the two torsion spring shafts 23 are respectively rotatably connected to the two line measuring concave plates 24, the line measuring concave plates 24 are fixedly installed with a line pressing capsule 25 in the groove, the top of the line measuring concave plates 24 are connected to a distance measuring sensor 26, the top of the line measuring push plate 21 is connected to a following magnetic plate 22 for magnetic attraction with the electric control slider 13, the top of the line measuring push plate 21 is rotatably connected to a limit wheel 27, and a tooth pattern corresponding to the display screen of the limit wheel 27 is provided above the output end of the line measuring push plate 21, and the limit wheel 27 is fixedly connected to two limit right-angle rods 28; It should be noted that: after the dustproof disassembly cover 1 stops docking with the inverter, the electric control slider 13 is controlled to slide slowly in the electric control guide rail 11, and the sliding of the electric control slider 13 will drive the adjusting gear 14 to move synchronously. The adjusting gear 14 will rotate when it engages with the fixed rack 12. The rotating adjusting gear 14 will drive the selected shaft 16 to rotate together through the sprocket mechanism 15. The rotation of the selected shaft 16 will drive the elliptical arc plate 19 to rotate through multiple hydraulic piston rods 18. During the process of the multiple elliptical arc plates 19 moving and rotating at the bottom of the inverter, if they come into contact with the end of the cable, the elliptical arc plate 19 that rotates forward will compress the hydraulic piston rod 18, so that the pressure sensor 17 senses the pressure here, and then determines that there is a cable here, and will feedback the electric The control slider 13 stops moving and pushes out the line measuring push plate 21, so that the ends of the two line measuring concave plates 24 are pressed when they contact the cables, and then the torsion spring shaft 23 is deflected. When the cables enter the grooves in the line measuring concave plates 24, the line measuring concave plates 24 are reset and the line pressing capsule 25 is pressed against the outer wall of the cables to protect and limit the cables. During this process, the line measuring push plate 21 performs a reciprocating telescopic movement to test the wiring of the inverter. In the process of pushing out the line measuring push plate 21, the limiting wheel 27 is driven to rotate, so that the limiting right-angle rod 28 is pressed against the limiting slide rail 20, so that the following magnetic plate 22 on the line measuring push plate 21 here will not move with the electric control slider 13. Subsequently, the end position of each cable is determined one by one, and the connection firmness of each cable is tested. The above advantages are: the pressure of the elliptical arc plate 19 can be used to determine the position of each cable at the bottom of the inverter one by one, making it easier to test the connection status of each cable one by one, thus avoiding the problem of difficulty in individual detection when the wiring at the bottom of the inverter is complex; The inner end surface of the detection sampling box 2 is connected to a retaining seat 30 through two electric push rods 29. A test semicircular plate 32 is provided on the retaining seat 30. One side of the test semicircular plate 32 is connected to multiple infrared thermometers 33 and a sample storage camera 34. The other side of the test semicircular plate 32 is connected to a dust collection component for sampling the dust accumulation on the inner wall of the inverter housing; Furthermore, a connection groove connected to the detection sampling box 2 is provided on the top of the dust-proof disassembly cover 1, a steering groove for the rotation of the test semicircular plate 32 is provided on the retaining seat 30, the retaining seat 30 is fixedly connected to the drive motor 31, the drive motor 31 is fixedly connected to the test semicircular plate 32 through a rotating shaft, the dust collection assembly consists of an oblique sampling cover 37 and an interference push rod 35, the test semicircular plate 32 is fixedly connected to the oblique sampling cover 37 through the interference push rod 35, the test semicircular plate 32 is fixedly connected to the oblique sampling cover 37, the test semicircular plate 32 is fixedly connected to a micro air pump, and the micro air pump is connected to multiple oblique sampling covers 37 through a capillary hose 36; It should be noted that after the inverter housing is disassembled and moved, the electric push rod 29 is used to push the test semicircular plate 32 into the dust-proof disassembly cover 1, and then the drive motor 31 is used to drive the test semicircular plate 32 to rotate to the bottom of the retaining seat 30. The infrared thermometer 33 in the front will measure the temperature of each component inside the inverter when it is powered on. Without the obstruction of the inverter housing, the temperature measurement data is more accurate, and the temperature data of each component of the inverter in the working state is richer. The sample storage camera 34 will take pictures and store samples of the status of each component inside the inverter to complete the monitoring of the use of the components inside the inverter. After the test semicircular plate 32 stops moving downward, the resistance push rod 35 on its rear side is used to press the oblique sampling cover 37 against the inner wall of the inverter housing. During the subsequent rotation, the oblique sampling cover 37 will scrape the dust on the inner wall of the housing, and the micro air pump uses the capillary hose 36 to generate suction in the oblique sampling cover 37 for auxiliary sampling. The benefits of this are: in this way, the dust accumulation on the inner wall of the inverter housing can be sampled in a safe, dust-free and oxygen-free environment, which facilitates the subsequent judgment of whether the inverter needs to be completely powered off and disassembled for cleaning based on the sampling results; The detection method includes the following steps: Inverter housing disassembly and dust-free storage: Control the bolt robot 6 to remove the bolts on the inverter housing, activate the electric control push rod in the limiting seat 7, push out the arc limit plate 9 to press the inner wall of the inverter housing, and clamp the housing together with the friction rubber column 8. Slide the limiting seat 7 along the control guide groove to move the disassembled inverter housing and store it in the dust-proof disassembly cover 1 to maintain a closed, dust-proof and oxygen-proof environment; Cable position identification and wiring test: The selected shaft 16 drives multiple hydraulic piston rods 18 and the elliptical arc plate 19 at their ends to rotate at the bottom of the inverter. When the elliptical arc plate 19 contacts the end of a cable, the pressure sensor 17 is triggered, recording the current position as the cable position. The two line measurement concave plates 24 on the line measurement push plate 21 contact the cable, simulating the force applied to the wiring. The position and wiring status of all cables at the bottom of the inverter are tested one by one. Detection of the internal status of the inverter and sampling of dust on the inner wall of the casing: The infrared thermometer 33 scans and measures the temperature of the exposed components inside the inverter to obtain temperature data under the working state. The sampling camera 34 is used to photograph and record the status of the internal components of the inverter. The drive motor 31 is controlled to rotate the test semicircular plate 32 so that the side with the dust collection component faces the inner wall of the stored inverter casing. The oblique sampling cover 37 is used to scrape and absorb the dust attached to the inner wall of the casing to complete the sampling of the dust accumulation amount.

[0024] When the present invention is in use, the dustproof disassembly cover 1 is moved to the back shell of the photovoltaic inverter through the traveling wheel mechanism 3, and axial alignment is performed. Then, the dustproof disassembly cover 1 is covered and stuck on the back shell of the inverter through the lifting and adjustment of the hydraulic lifting column 10. Then, the hydraulic support seat 4 is dropped to the ground to fix the position of the dustproof disassembly cover 1. Then, the positioning suction cup 5 is controlled to perform preliminary limiting on the inverter shell. During this process, the bolt mechanical arm 6 will remove the bolts on the inverter shell, thereby removing the inverter shell. The limiting seat 7 in the guide groove is controlled to slide, so that the limiting plate is pressed against the inverter shell. After removal, , use the electric control push rod in the limiting seat 7 to push out the arc limiting plate 9, so that the arc limiting plate 9 is pressed tightly against the inner wall of the inverter housing, thereby pressing the outer wall of the inverter housing against multiple friction rubber columns 8, and cooperate with the positioning suction cup 5 to limit the disassembled inverter housing, and then control the limiting seat 7 to slide in the control guide groove to achieve the movement and storage of the housing. During this process, the housing slides in the adapted dust-proof disassembly cover 1, which can prevent external oxygen and dust from entering the interior of the inverter, ensuring the safety of the inverter after disassembly, and also allowing the inverter to perform various internal tests without powering off; After the dustproof disassembly cover 1 stops docking with the inverter, the electric control slider 13 is controlled to slide slowly in the electric control guide rail 11. The sliding of the electric control slider 13 will drive the adjusting gear 14 to move synchronously. The adjusting gear 14 will rotate when it engages with the fixed rack 12. The rotating adjusting gear 14 will drive the selected shaft 16 to rotate together through the sprocket mechanism 15. The rotation of the selected shaft 16 will drive the elliptical arc plate 19 to rotate through multiple hydraulic piston rods 18. During the process of the multiple elliptical arc plates 19 moving and rotating at the bottom of the inverter, if they come into contact with the end of the cable, the elliptical arc plate 19 that rotates forward will compress the hydraulic piston rod 18, so that the pressure sensor 17 senses the pressure here, and then determines that there is a cable here, and will feedback that the electric control slider 13 stops moving, and pushes out the measuring line push plate 21, so that the ends of the two measuring line concave plates 24 are pressurized when they come into contact with the cable, thereby The torsion spring shaft 23 is deflected, and when the cable enters the groove in the measuring line concave plate 24, the measuring line concave plate 24 is reset and the pressing bag 25 is pressed against the outer wall of the cable to protect and limit the cable. In this process, the measuring line push plate 21 performs a reciprocating telescopic movement to test the wiring of the inverter. In the process of pushing the measuring line push plate 21 out, the limiting wheel 27 is driven to rotate, so that the limiting right-angle rod 28 is pressed against the limiting slide rail 20, so that the following magnetic plate 22 on the measuring line push plate 21 here will not move with the electric control slider 13. The end position of each cable is determined one by one, and the connection firmness of each cable is tested. In this way, the pressure condition of the elliptical arc plate 19 can be used to determine the position of each cable at the bottom of the inverter one by one, which is convenient for the subsequent testing of the connection condition of each cable one by one, avoiding the problem of difficult individual detection under the condition of complex wiring arrangement at the bottom of the inverter; After the inverter housing is disassembled and moved, the electric push rod 29 is used to push the test semicircular plate 32 into the dustproof disassembly cover 1, and then the drive motor 31 is used to drive the test semicircular plate 32 to rotate to the bottom of the retaining seat 30. The infrared thermometer 33 in the front will measure the temperature of each component inside the inverter when it is powered on. Without the obstruction of the inverter housing, the temperature measurement data is more accurate, and the temperature data of each component of the inverter in the working state is more abundant. The sample camera 34 will take pictures and store samples of the status of each component inside the inverter, completing the internal components of the inverter. To monitor the use of components, after the test semicircular plate 32 stops moving downward, the oblique sampling cover 37 is pressed against the inner wall of the inverter housing by using the resistance push rod 35 on its rear side. Then, during the rotation process, the oblique sampling cover 37 will scrape the dust on the inner wall of the housing. The micro air pump uses the capillary hose 36 to generate suction in the oblique sampling cover 37 for auxiliary sampling. In this way, the dust accumulation on the inner wall of the inverter housing can be sampled in a safe dust-free and oxygen-free state, which is convenient for judging whether the inverter needs to be disassembled and cleaned as a whole according to the sampling situation.

[0025] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A detection device for inverter maintenance, comprising a dustproof disassembly cover (1) and a detection sampling box (2), characterized in that: The bottom end of the dustproof disassembly cover (1) is connected to a start-stop assembly via a fixing seat, a plurality of bolt mechanical arms (6) are fixedly mounted on the inner end surface of the dustproof disassembly cover (1), and two control guide grooves are provided on the left and right inner side walls of the dustproof disassembly cover (1), and the inner side walls of the control guide grooves are connected to a limiting assembly for limiting the position of the inverter housing after disassembly; The bottom end of the dustproof disassembly cover (1) is connected to an electric control guide rail (11) through a mounting plate, the electric control guide rail (11) is connected to a gear assembly through an electric control slider (13), the gear assembly is connected to a selection shaft (16) through a sprocket mechanism (15), the top end of the selection shaft (16) is connected to a positioning assembly for determining the position of the inverter cable, the side wall of the mounting plate is connected to a plurality of measuring line push plates (21) through a limiting slide rail (20), and the output end of the measuring line push plate (21) is connected to a measuring line assembly; The inner end surface of the detection sampling box (2) is connected to a retaining seat (30) via two electric push rods (29), and a test semicircular plate (32) is provided on the retaining seat (30). One side of the test semicircular plate (32) is connected to a plurality of infrared thermometers (33) and a sample storage camera (34), and the other side of the test semicircular plate (32) is connected to a dust collection component for sampling the amount of dust accumulated on the inner wall of the inverter housing.

2. The inverter maintenance detection device according to claim 1, characterized in that: The start-stop assembly comprises two traveling wheel mechanisms (3) rotatably arranged at the bottom of a fixed seat, the left and right side walls of the fixed seat are fixedly connected to hydraulic support seats (4), the top of the fixed seat is fixedly connected to a dustproof disassembly cover (1) via two hydraulic lifting columns (10), and the inner end surface of the dustproof disassembly cover (1) is fixedly connected to a positioning suction cup (5).

3. The inverter maintenance detection device according to claim 1, characterized in that: The limiting assembly comprises a limiting seat (7) slidably arranged on the inner wall of the control guide groove, the end surface of the limiting seat (7) is connected to a plurality of friction rubber columns (8) through a limiting plate, the end surface of the limiting seat (7) is provided with a plurality of receiving grooves, and the inner end surface of the receiving groove is connected to an arc-shaped limiting plate (9) through an electric control push rod.

4. The inverter maintenance detection device according to claim 1, characterized in that: The gear assembly includes a fixed rack (12) fixed on the outer side wall of the electric control guide rail (11); the push rod cross plate of the electric control slider (13) is rotatably connected to an adjustment gear (14) meshing with the fixed rack (12); and the adjustment gear (14) is transmission-connected to the selected shaft (16) through a sprocket mechanism (15).

5. The inverter maintenance detection device according to claim 1, characterized in that: The positioning assembly comprises a plurality of pressure sensors (17) fixed to the end of a selected shaft (16), wherein the pressure sensors (17) are connected to an elliptical arc plate (19) via a hydraulic piston rod (18).

6. The inverter maintenance detection device according to claim 1, characterized in that: The line measuring assembly comprises two torsion spring shafts (23) rotatably arranged on the output end of the line measuring push plate (21), the two torsion spring shafts (23) being rotatably connected to two line measuring concave plates (24), a line pressing capsule (25) being fixedly installed in the groove of the line measuring concave plate (24), and a distance measuring sensor (26) being connected to the top end of the line measuring concave plate (24).

7. The inverter maintenance detection device according to claim 1, characterized in that: The top of the line measuring push plate (21) is connected to a follower magnetic plate (22) for magnetic attraction with the electric control slider (13), and the top of the line measuring push plate (21) is rotatably connected to a limit wheel (27). A tooth pattern corresponding to the display screen of the limit wheel (27) is provided above the output end of the line measuring push plate (21), and the limit wheel (27) is fixedly connected to two limit right-angle rods (28).

8. The inverter maintenance detection device according to claim 1, characterized in that: The top of the dustproof disassembly cover (1) is provided with a connection groove connected to the detection sampling box (2), and the retaining seat (30) is provided with a steering groove for the rotation of the test semicircular plate (32). The retaining seat (30) is fixedly connected to the drive motor (31), and the drive motor (31) is fixedly connected to the test semicircular plate (32) via a rotating shaft.

9. The inverter maintenance detection device according to claim 1, characterized in that: The dust collection assembly consists of an oblique sampling cover (37) and a resisting push rod (35); the test semicircular plate (32) is fixedly connected to the oblique sampling cover (37) via the resisting push rod (35); the test semicircular plate (32) is fixedly connected to a micro air pump, and the micro air pump is connected to a plurality of oblique sampling covers (37) via a capillary hose (36).

10. The detection method proposed by the detection device for inverter maintenance according to any one of claims 1 to 9, characterized in that: The detection method includes the following steps: S1. Disassembly and dust-free storage of the inverter housing: Control the bolt mechanical arm (6) to disassemble the bolts on the inverter housing, start the electric control push rod in the limiting seat (7), push out the arc limit plate (9) to press the inner wall of the inverter housing, and clamp the housing together with the friction rubber column (8), slide the limiting seat (7) along the control guide groove, move the disassembled inverter housing and store it in the dust-proof disassembly cover (1), and maintain a closed dust-proof and oxygen-proof environment; S2. Cable position identification and wiring test: The selected shaft (16) drives multiple hydraulic piston rods (18) and the elliptical arc plate (19) at their ends to rotate and move at the bottom of the inverter. When the elliptical arc plate (19) contacts the end of the cable, the pressure sensor (17) is triggered to record the current position as the cable position. The two measuring line concave plates (24) on the measuring line push plate (21) contact the cable to simulate the wiring force condition, and the position and wiring condition of all cables at the bottom of the inverter are detected one by one. S3. Inverter internal status detection and dust sampling on the inner wall of the housing: The infrared thermometer (33) scans and measures the temperature of the exposed components inside the inverter to obtain temperature data under the working state. The sampling camera (34) is used to record the status of the components inside the inverter. The driving motor (31) is controlled to rotate the test semicircular plate (32) so that the side with the dust collection component faces the inner wall of the inverter housing that has been stored. The oblique sampling cover (37) is used to scrape and absorb the dust attached to the inner wall of the housing to complete the sampling of the dust accumulation amount.

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