Transfer system for overhauling high-power frequency converter and transfer method thereof

Abstract

The invention belongs to the technical field of frequency converter maintenance, and relates to a transfer system for high-power frequency converter maintenance and a transfer method thereof.The transfer system comprises a storage unit, a transfer path, a transfer unit and a maintenance unit; the frequency converter is arranged in the storage unit; the starting end of the transfer path is an opening of the storage unit; the transfer unit comprises a transfer frame body, and the transfer frame body moves along a transfer path; the maintenance unit is located at the terminal of the transfer path; according to the transfer device, the transfer frame body is arranged, so that the frequency converter can be stably and safely transferred from the storage unit to the overhaul unit and then transferred back to the storage unit through the transfer frame body after overhaul operation is completed, the frequency converter can be transferred only by at least two persons, cooperation of multiple persons is not needed, the transfer efficiency of the frequency converter is improved by two times, and the labor intensity of workers is reduced. The whole frequency converter transfer process is time-saving and labor-saving, in addition, the transfer frame body provides stable support for the frequency converter, and the risk that the frequency converter accidentally slides down or is damaged in the transfer process is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of inverter maintenance, and in particular to a transport system and a transport method for high-power inverter maintenance. Background Art

[0002] With the rapid development of industrial automation technology, frequency converters, as core equipment in power transmission and control systems, are widely used in motor speed regulation, energy saving and consumption reduction, etc. Frequency converters can precisely control the motor speed by adjusting the frequency and voltage of the output power supply, and are an indispensable and important part of modern industrial production.

[0003] However, despite the advantages of frequency converters such as high efficiency, stability and reliability, they may still fail or have performance degradation during long-term operation due to the influence of various factors such as environment, load and aging. Therefore, regular inspection and maintenance of frequency converters is the key to ensure their continued efficient operation and extend their service life. Especially for high-power frequency converters, due to their large size and heavy weight, the inspection work is more difficult.

[0004] The traditional high-power inverter maintenance process usually requires the collaboration of multiple people. The specific steps include: first, according to the specific structure and design of the inverter, remove its external components, wiring, plugs and other accessories; then, an operator enters the inverter cabinet, confirms that there is no abnormality in the internal environment of the inverter cabinet, and guides the operation team outside the inverter cabinet to perform the operation; the external operation team consists of at least five members, two of whom are located in front of the inverter cabinet, squatting and holding the bottom of the inverter, and two people bend down and approach the two sides of the inverter respectively, and hold the inverter with both hands and apply a slight thrust to the inverter, so that the inverter extends out of the inverter cabinet. When the inverter is about to be completely moved out of the inverter cabinet, one person and the instructor who was originally inside the inverter cabinet quickly move to the back of the inverter cabinet and hold the bottom of the inverter cabinet with both hands; then, the six operations are adjusted to four people lifting and two people assisting from the side. The team is formed with two people at the front end of the inverter, two people at the back end of the inverter, and the other two people at both sides of the inverter. It takes 15 minutes to transport the inverter to the maintenance site. After arriving at the maintenance site, four lifters slowly put down the inverter at the same time to carry out the maintenance of the inverter. After the maintenance of the inverter is completed, it takes another 15 minutes to transport the inverter to the inverter cabinet by four people lifting it and two people assisting on the side. After arriving at the inverter cabinet, the two people at the back end of the inverter enter the inverter cabinet and first lift the back end of the inverter into the inverter cabinet, tilting the inverter, and then the two people at the front end of the inverter lift the front end of the inverter and push it into the inverter cabinet. At this time, the two people inside adjust their positions in time to assist external personnel to push the inverter smoothly to the required installation position, and reconnect all external components, wiring, plugs and other accessories to complete the entire transportation process of the inverter maintenance.

[0005] It can be seen that during the maintenance process of a high-power inverter, at least six operators are required to move the inverter, and the transportation of the inverter alone will take more than half an hour. The entire inverter transportation process is time-consuming and labor-intensive. Summary of the invention

[0006] In view of the technical problem in the background technology that during the maintenance process of a high-power inverter, at least six operators are required to transport the inverter, and the transportation of the inverter alone will take more than half an hour, and the entire inverter transportation process is time-consuming and labor-intensive, the present invention provides a transportation system and a transportation method for the maintenance of a high-power inverter.

[0007] The transport system for maintenance of a high-power frequency converter of the present invention is provided with a transport frame, so that the frequency converter can be smoothly and safely transferred from the storage unit to the maintenance unit, and then transferred back to the storage unit through the transport frame after the maintenance work is completed. Only at least two people are needed to transport the frequency converter, one of whom pulls the transport frame and the other pushes the frequency converter to move, and no multiple people need to cooperate. The transport of the frequency converter takes about fifteen minutes, and the transport efficiency of the frequency converter is doubled. The entire frequency converter transport process saves time and effort. In addition, the transport frame provides a stable support for the frequency converter, reducing the risk of accidental slippage or damage of the frequency converter during transportation.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0009] A transport system for the maintenance of a high-power frequency converter comprises: a storage unit, a transport path, a transport unit and a maintenance unit; the storage unit is provided with an opening for the frequency converter to enter and exit, the frequency converter is placed in the storage unit, and rollers are installed at the bottom of the frequency converter; the starting end of the transport path is the opening of the storage unit; the transport unit comprises a transport frame, the transport frame moves along the transport path, and the transport frame is used to transport the frequency converter; the maintenance unit is located at the terminal of the transport path, and is used to perform maintenance operations on the frequency converter.

[0010] In a specific possible implementation, a first guide rail is provided at the storage unit; the size of the first guide rail matches the size of the roller at the bottom of the inverter, and the roller at the bottom of the inverter is engaged in the first guide rail.

[0011] In a specific feasible implementation scheme, the storage unit is a frequency conversion cabinet; an opening is arranged on one side of the frequency conversion cabinet, the starting end of the transfer path is the opening of the frequency conversion cabinet, the frequency converter is placed in the frequency conversion cabinet, and a clearance passage is left between the frequency conversion cabinet and the frequency converter for the convenience of operators to pass through; the first guide rail is installed at the bottom of the inner wall of the frequency conversion cabinet.

[0012] In a specific possible implementation scheme, the transfer frame includes a load-bearing plate and moving wheels; the moving wheels are installed at the bottom of the load-bearing plate; and the frequency converter is placed on the load-bearing plate.

[0013] In a specific possible implementation scheme, the transport frame further includes a pull rod; one end of the pull rod is connected to the load-bearing plate.

[0014] In a specific possible implementation manner, a second guide rail is installed on the carrying plate; the second guide rail extends along the length direction of the carrying plate, and the second guide rail has the same size as the first guide rail.

[0015] In a specific possible implementation scheme, the transport frame further includes a first baffle; the first baffle is movably connected to an end of the second guide rail away from the pull rod.

[0016] In a specific possible implementation mode, a third guide rail is provided at the inlet end of the maintenance unit; and the third guide rail has the same size as the second guide rail.

[0017] In a specific possible implementation scheme, the transport frame also includes a second baffle; the second baffle is movably connected to one end of the second guide rail close to the pull rod.

[0018] A method for transporting a high-power frequency converter for maintenance comprises the following steps:

[0019] S1. Install and form the above-mentioned high-power inverter maintenance transfer system;

[0020] S2, move out the inverter: rotate the first baffle until the plane where the first baffle is located is parallel to the plane where the carrier plate is located, open the opening of the storage unit, make the first baffle abut against the first guide rail, apply force to the inverter on the opening side of the storage unit, push the inverter to move along the extension direction of the first guide rail, pass the first baffle, and move to the transfer frame. At this time, the roller at the bottom of the inverter is engaged in the second guide rail;

[0021] S3, transfer to the maintenance area: rotate the first baffle plate, rotate the second baffle plate, at this time, the first baffle plate and the second baffle plate are both extended upward along the plane where the load-bearing plate is located, and the transfer frame is pulled along the transfer path by the pull rod to move the transfer frame to the maintenance unit;

[0022] S4, unloading and maintenance: after reaching the maintenance unit, rotate the second baffle until the plane where the second baffle is located is parallel to the plane where the bearing plate is located, make the second baffle abut against the third guide rail, apply force to the inverter, push the inverter to move along the extension direction of the second guide rail, pass the second baffle, and move along the extension direction of the third guide rail to the maintenance unit. During this process, the roller at the bottom of the inverter is engaged in the third guide rail;

[0023] S5, loading after maintenance: after the maintenance is completed, the inverter is pushed back from the maintenance unit to the third guide rail, the second baffle is rotated until the plane where the second baffle is located is parallel to the plane where the carrier plate is located, the second baffle is abutted against the third guide rail, force is applied to the inverter, and the inverter is pushed to move along the extension direction of the third guide rail, passing the second baffle, and the inverter moves to the transport frame. At this time, the roller at the bottom of the inverter is engaged in the second guide rail;

[0024] S6, transfer back to the storage unit: rotate the first baffle plate, rotate the second baffle plate, at this time, the first baffle plate and the second baffle plate are both extended upward along the plane where the carrying plate is located, and the transfer frame is pulled by the pull rod to move along the transfer path to the storage unit;

[0025] S7, return the inverter to its original position: rotate the first baffle until the plane where the first baffle is located is parallel to the plane where the carrier plate is located, open the opening of the storage unit, abut the first baffle against the first guide rail, apply force to the inverter, push the inverter to move along the extension direction of the first guide rail, pass the first baffle, and move into the storage unit. At this time, the roller at the bottom of the inverter is engaged in the first guide rail, close the opening of the storage unit, and complete the entire transportation process of the inverter maintenance.

[0026] In summary, the present invention has the following beneficial technical effects:

[0027] 1. The transport system for maintenance of high-power frequency converters of the present invention is provided with a transport frame, so that the frequency converter can be smoothly and safely transferred from the storage unit to the maintenance unit, and then transferred back to the storage unit through the transport frame after the maintenance work is completed. Only at least two people are needed to transport the frequency converter, one of whom pulls the transport frame and the other pushes the frequency converter to move, and no multiple people need to cooperate. The transport of the frequency converter takes about fifteen minutes, and the transport efficiency of the frequency converter is doubled. The entire frequency converter transport process saves time and effort. In addition, the transport frame provides a stable support for the frequency converter, reducing the risk of accidental slippage or damage of the frequency converter during transportation.

[0028] 2. The transport system for maintenance of high-power frequency converters of the present invention has a first guide rail, which ensures that the bottom roller of the frequency converter can be accurately engaged and slide along the first guide rail, preventing the frequency converter from shaking and shifting in the storage unit, and protecting the safety of the frequency converter and its internal components; a second guide rail is provided, which is installed on the bearing plate of the transport frame, and the second guide rail is consistent in size with the first guide rail, so that the frequency converter can be smoothly transferred from the storage unit to the transport frame to achieve seamless docking; a third guide rail is provided, which is located at the inlet end of the maintenance unit, and the third guide rail is consistent in size with the second guide rail, so that the frequency converter can slide directly into the maintenance area through the third guide rail, thereby improving the transport efficiency of the frequency converter. The combined design of the first guide rail, the second guide rail and the third guide rail not only improves the transport efficiency of the frequency converter, but also reduces the potential risks in the process of transporting the frequency converter, ensuring the smooth progress of the frequency converter transport work.

[0029] 3. The transport system for overhauling a high-power frequency converter of the present invention is provided with a first baffle and a second baffle, wherein the first baffle is movably connected to an end of the second guide rail away from the pull rod, and the second baffle is movably connected to an end of the second guide rail close to the pull rod. When the frequency converter is placed on the transport frame, the first baffle and the second baffle are respectively blocked at both ends of the transport frame to prevent the frequency converter from sliding forward or tipping over due to inertia during transport, thereby reducing the safety risks caused by the frequency converter slipping or tipping over. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the transport system for repairing a high-power frequency converter of the present invention.

[0031] Figure 2 It is a partial structural schematic diagram of the transport system for overhauling a high-power frequency converter of the present invention, and is intended to illustrate a storage unit.

[0032] Figure 3 It is a partial structural schematic diagram of the transfer system for repairing a high-power frequency converter of the present invention, and is intended to illustrate a transfer unit.

[0033] Figure 4 It is a partial structural schematic diagram of the transport system for maintenance of a high-power frequency converter of the present invention, and is intended to illustrate the maintenance unit.

[0034] Explanation of the accompanying drawings: 1. Storage unit; 2. Transfer path; 3. Transfer unit; 31. Transfer frame; 311. Loading plate; 312. Moving wheel; 313. Pull rod; 314. First baffle; 315. Second baffle; 4. Maintenance unit; 5. First guide rail; 6. Second guide rail; 7. Third guide rail; 8. Frequency converter. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further explained below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the implementation modes described below.

[0036] The high-power frequency converter 8 of the present invention has a size of 600x500x1400mm and a weight of 150kg. Four rollers of the same size are installed at the bottom of the frequency converter 8. The diameter of the rollers is 75mm and the width is 35mm.

[0037] Reference Figure 1 to Figure 3 A transport system for the maintenance of a high-power frequency converter comprises: a storage unit 1, a transport path 2, a transport unit 3 and a maintenance unit 4. The storage unit 1 is provided with an opening for the frequency converter 8 to enter and exit. The frequency converter 8 is placed in the storage unit 1, and rollers are installed at the bottom of the frequency converter 8. The starting end of the transport path 2 is the opening of the storage unit 1. The transport unit 3 comprises a transport frame 31, which moves along the transport path 2 and is used to transport the frequency converter 8. The maintenance unit 4 is located at the terminal of the transport path 2 and is used to perform maintenance operations on the frequency converter 8.

[0038] Reference Figure 2 A first guide rail 5 is provided at the storage unit 1 . The size of the first guide rail 5 matches the size of the roller at the bottom of the frequency converter 8 , and the roller at the bottom of the frequency converter 8 is clamped in the first guide rail 5 .

[0039] Reference Figure 2 The storage unit 1 is a frequency conversion cabinet. An opening is provided on one side of the frequency conversion cabinet, and a frequency converter 8 is placed in the frequency conversion cabinet. A clearance passage is left between the frequency conversion cabinet and the frequency converter 8 for operators to pass through. The first guide rail 5 is installed at the bottom of the inner wall of the frequency conversion cabinet.

[0040] Specifically, the length of the frequency conversion cabinet is not less than 800mm, so as to facilitate the placement and removal of the frequency converter 8 and heat dissipation. Preferably, the length of the frequency conversion cabinet is 800mm; the width of the frequency conversion cabinet is not less than 650mm, so as to reserve operating space for operators. Preferably, the width of the frequency conversion cabinet is 650mm; the height of the frequency conversion cabinet is not less than 1600mm, so as to facilitate the installation of additional heat dissipation equipment through the top space. Preferably, the height of the frequency conversion cabinet is 1600mm.

[0041] More specifically, two first installation grooves are provided at the bottom of the inner wall of the frequency converter cabinet, and the two first installation grooves are arranged side by side along the width direction of the frequency converter cabinet. A first guide rail 5 is installed in each of the two first installation grooves. The two rollers located on the same side of the bottom of the frequency converter 8 just extend into one guide rail, and the two first guide rails 5 are connected to the frequency converter cabinet by fasteners such as bolts and screws. The frequency converter 8 is fixed in the frequency converter cabinet by the four rollers at the bottom to prevent the frequency converter 8 from shaking and shifting in the frequency converter cabinet, thereby protecting the safety of the frequency converter 8 and its internal components.

[0042] Reference Figure 1 to Figure 3 The transport frame 31 includes a carrying plate 311 and a moving wheel 312. The moving wheel 312 is installed at the bottom of the carrying plate 311; the frequency converter 8 is placed on the carrying plate 311.

[0043] In the present invention, the moving wheel 312 can be a rubber wheel, a universal wheel, etc.; preferably, the moving wheel 312 is set as a universal wheel, and the universal wheel has a self-locking function, which is convenient for timely locking the transfer frame 31 at the required position to avoid unnecessary sliding or shifting, and enhance the safety and stability of the inverter 8 during transportation.

[0044] Embodiment 1:

[0045] Reference Figure 2 and Figure 3 In the transport system for repairing a high-power frequency converter in this embodiment, the transport frame 31 further includes a pull rod 313 ; one end of the pull rod 313 is connected to the bearing plate 311 .

[0046] In this embodiment, the pull rod 313 is provided to facilitate the operator to apply force to the carrying plate 311, saving time and effort and improving the transportation efficiency of the inverter 8.

[0047] Embodiment 2:

[0048] Reference Figure 2 and Figure 3 In the transport system for high-power inverter maintenance of this embodiment, a second guide rail 6 is installed on the carrier plate 311. The second guide rail 6 extends along the length direction of the carrier plate 311, and the size of the second guide rail 6 is consistent with that of the first guide rail 5.

[0049] Specifically, two second mounting grooves are provided on the supporting plate 311, and the two second mounting grooves are arranged side by side along the length direction of the supporting plate 311. The distance between the two second mounting grooves is consistent with the distance between the two first mounting grooves, and the second mounting grooves are consistent in size with the first mounting grooves. A second guide rail 6 is respectively installed in the two second mounting grooves, and the two second guide rails 6 are connected to the supporting plate 311 by fasteners such as bolts and screws.

[0050] In this embodiment, a second guide rail 6 is provided, and the second guide rail 6 is installed on the supporting plate 311 of the transfer frame 31, and the second guide rail 6 is consistent in size with the first guide rail 5, so that the frequency converter 8 is smoothly transferred from the storage unit 1 to the transfer frame 31 to achieve seamless docking. At the same time, it prevents the frequency converter 8 from shaking and shifting during the transfer process to ensure the safety of the operator's operation.

[0051] Embodiment 3:

[0052] Reference Figure 2 and Figure 3In the transport system for repairing a high-power frequency converter in this embodiment, based on the second embodiment, the transport frame 31 further includes a first baffle 314 ; the first baffle 314 is movably connected to an end of the second guide rail 6 away from the pull rod 313 .

[0053] Specifically, the first baffle 314 is movably connected to an end of the second guide rail 6 away from the pull rod 313 via a hinge.

[0054] In this embodiment, when the inverter 8 is moved out of the inverter cabinet, the second guide rail 6 abuts against the first guide rail 5 through the first baffle 314, so as to facilitate the smooth transition of the inverter 8; when the inverter 8 is moved to the transfer frame 31, the first baffle 314 blocks one end of the second guide rail 6 to prevent the inverter 8 from sliding forward or tipping over due to inertia during transportation.

[0055] Embodiment 4:

[0056] Reference Figure 2 to Figure 4 In the transport system for maintenance of a high-power frequency converter of this embodiment, based on the third embodiment, a third guide rail 7 is provided at the inlet end of the maintenance unit 4; the third guide rail 7 is consistent in size with the second guide rail 6.

[0057] Specifically, a transition platform is provided at the inlet end of the maintenance unit 4, and the end of the transition platform is the maintenance area. Two third mounting grooves are provided on the transition platform, and the two third mounting grooves are arranged side by side along the length direction of the transition platform. The distance between the two third mounting grooves is consistent with the distance between the two second mounting grooves, and the third mounting groove has the same size as the second mounting groove. A third guide rail 7 is respectively installed in the two third mounting grooves, and the two third guide rails 7 are connected to the transition platform by fasteners such as bolts and screws.

[0058] In this embodiment, a third guide rail 7 is provided, and the third guide rail 7 is located at the inlet end of the maintenance unit 4. The third guide rail 7 is consistent in size with the second guide rail 6, so that the frequency converter 8 can directly slide into the maintenance area through the third guide rail 7, thereby improving the transportation efficiency of the frequency converter 8.

[0059] Embodiment 5:

[0060] Reference Figure 2 to Figure 4 In the transport system for high-power inverter maintenance of this embodiment, based on the fourth embodiment, the transport frame 31 further includes a second baffle 315. The second baffle 315 is movably connected to one end of the second guide rail 6 close to the pull rod 313.

[0061] Specifically, the second baffle 315 is movably connected to one end of the second guide rail 6 close to the pull rod 313 through a hinge.

[0062] In this embodiment, when the frequency converter 8 is moved onto the transfer frame 31, the first baffle 314 blocks one end of the second guide rail 6 to prevent the frequency converter 8 from sliding forward or tipping over due to inertia during the transfer process; when the frequency converter 8 is unloaded from the transfer frame 31 to the maintenance unit 4, the second guide rail 6 abuts against the third guide rail 7 through the second baffle 315, thereby facilitating a smooth transition of the frequency converter 8.

[0063] Reference Figure 1 to Figure 4 , a method for transporting a high-power inverter for maintenance, comprising the following steps:

[0064] S1. Install and form the above-mentioned high-power inverter maintenance transfer system;

[0065] S2, remove the inverter: rotate the first baffle 314 until the plane where the first baffle 314 is located is parallel to the plane where the carrier plate 311 is located, open the opening of the storage unit 1, and make the first baffle 314 abut against the first guide rail 5. At one side of the opening of the storage unit 1, apply force to the inverter 8 to push the inverter 8 to move along the extension direction of the first guide rail 5. After passing the first baffle 314, the inverter 8 moves to the transport frame 31. At this time, the roller at the bottom of the inverter 8 is engaged with the second guide rail 6.

[0066] S3, transfer to the maintenance area: rotate the first baffle 314, rotate the second baffle 315, at this time, the first baffle 314 and the second baffle 315 are extended upward along the plane where the carrying plate 311 is located, and the transfer frame 31 is pulled along the transfer path 2 by the pull rod 313 to move the transfer frame 31 to the maintenance unit 4;

[0067] S4, unloading and maintenance: after reaching the maintenance unit 4, the second baffle 315 is rotated until the plane where the second baffle 315 is located is parallel to the plane where the carrying plate 311 is located, the second baffle 315 is brought into contact with the third guide rail 7, and force is applied to the inverter 8 to push the inverter 8 to move along the extension direction of the second guide rail 6. After passing the second baffle 315, the inverter 8 continues to move along the extension direction of the third guide rail 7 to the maintenance unit 4. During this process, the roller at the bottom of the inverter 8 is engaged with the third guide rail 7;

[0068] S5, loading after maintenance: after the maintenance is completed, the inverter 8 is pushed back to the third guide rail 7 by the maintenance unit 4, and the second baffle 315 is rotated until the plane where the second baffle 315 is located is parallel to the plane where the carrier plate 311 is located, and the second baffle 315 is abutted against the third guide rail 7, and force is applied to the inverter 8 to push the inverter 8 to move along the extension direction of the third guide rail 7, and the inverter 8 passes through the second baffle 315 and moves to the transport frame 31. At this time, the roller at the bottom of the inverter 8 is engaged with the second guide rail 6;

[0069] S6, transfer back to the storage unit: rotate the first baffle 314, rotate the second baffle 315, at this time, the first baffle 314 and the second baffle 315 are extended upward along the plane where the carrying plate 311 is located, and the transfer frame 31 is pulled by the pull rod 313 to move along the transfer path 2 to the storage unit 1;

[0070] S7, return the inverter to its original position: rotate the first baffle 314 until the plane where the first baffle 314 is located is parallel to the plane where the supporting plate 311 is located, open the opening of the storage unit 1, abut the first baffle 314 against the first guide rail 5, apply force to the inverter 8, push the inverter 8 to move along the extension direction of the first guide rail 5, pass the first baffle 314, and move the inverter 8 into the storage unit 1. At this time, the roller at the bottom of the inverter 8 is engaged in the first guide rail 5, and the opening of the storage unit 1 is closed, completing the entire transportation process of the inverter 8 maintenance.

[0071] The preferred embodiments of the present invention are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A transport system for high-power inverter maintenance, characterized in that: include: A storage unit (1), the storage unit (1) being provided with an opening for the frequency converter (8) to enter and exit, the frequency converter (8) being placed in the storage unit (1), and a roller being installed at the bottom of the frequency converter (8); A transfer path (2), wherein the starting end of the transfer path (2) is the opening of the storage unit (1); A transfer unit (3), the transfer unit (3) comprising a transfer frame (31), the transfer frame (31) moves along the transfer path (2), and the transfer frame (31) is used to transfer the frequency converter (8); and a maintenance unit (4), wherein the maintenance unit (4) is located at the terminal of the transfer path (2) and is used to perform maintenance operations on the frequency converter (8).

2. The high-power inverter maintenance transport system according to claim 1 is characterized in that: The storage unit (1) is provided with a first guide rail (5); The size of the first guide rail (5) matches the size of the roller at the bottom of the frequency converter (8), and the roller at the bottom of the frequency converter (8) is clamped in the first guide rail (5).

3. The high-power inverter maintenance transport system according to claim 2 is characterized in that: The storage unit (1) is a frequency conversion cabinet; The frequency conversion cabinet is provided with an opening on one side, the starting end of the transfer path (2) is the opening of the frequency conversion cabinet, the frequency converter (8) is placed in the frequency conversion cabinet, and a clearance passage is left between the frequency conversion cabinet and the frequency converter (8) for operators to pass through; The first guide rail (5) is installed at the bottom of the inner wall of the frequency conversion cabinet.

4. The high-power inverter maintenance transport system according to claim 2 or 3, characterized in that: The transfer frame (31) comprises a carrying plate (311) and moving wheels (312); The moving wheel (312) is installed at the bottom of the carrying plate (311); The frequency converter (8) is placed on a carrying plate (311).

5. The high-power inverter maintenance transport system according to claim 4 is characterized in that: The transport frame (31) further comprises a pull rod (313); One end of the pull rod (313) is connected to the bearing plate (311).

6. The high-power inverter maintenance transport system according to claim 5 is characterized in that: A second guide rail (6) is installed on the carrying plate (311); The second guide rail (6) extends along the length direction of the carrying plate (311), and the second guide rail (6) has the same size as the first guide rail (5).

7. The high-power inverter maintenance transport system according to claim 6 is characterized in that: The transfer frame (31) further includes a first baffle (314); The first baffle (314) is movably connected to an end of the second guide rail (6) away from the pull rod (313).

8. The high-power inverter maintenance transport system according to claim 7 is characterized in that: The inlet end of the maintenance unit (4) is provided with a third guide rail (7); The third guide rail (7) has the same size as the second guide rail (6).

9. The high-power inverter maintenance transport system according to claim 8, characterized in that: The transfer frame (31) further includes a second baffle (315); The second baffle (315) is movably connected to an end of the second guide rail (6) close to the pull rod (313).

10. A method for transporting a high-power inverter for maintenance, characterized in that: The following steps are involved: S1. Install and form the high-power inverter maintenance transport system as claimed in claim 9; S2, remove the frequency converter: rotate the first baffle (314) until the plane where the first baffle (314) is located is parallel to the plane where the carrier plate (311) is located, open the opening of the storage unit (1), make the first baffle (314) abut against the first guide rail (5), apply force to the frequency converter (8) on the opening side of the storage unit (1), push the frequency converter (8) along the extension direction of the first guide rail (5), pass the first baffle (314), and the frequency converter (8) moves to the transfer frame (31), at which time, the roller at the bottom of the frequency converter (8) is engaged with the second guide rail (6); S3, transfer to the maintenance area: rotate the first baffle (314), rotate the second baffle (315), at this time, the first baffle (314) and the second baffle (315) are extended upward along the plane where the carrying plate (311) is located, and the transfer frame (31) is pulled along the transfer path (2) by the pull rod (313), and the transfer frame (31) is moved to the maintenance unit (4); S4, unloading and maintenance: after reaching the maintenance unit (4), the second baffle (315) is rotated until the plane where the second baffle (315) is located is parallel to the plane where the carrier plate (311) is located, the second baffle (315) is brought into contact with the third guide rail (7), force is applied to the frequency converter (8), and the frequency converter (8) is pushed to move along the extension direction of the second guide rail (6), and after passing the second baffle (315), the frequency converter (8) continues to move along the extension direction of the third guide rail (7) to the maintenance unit (4), during which the roller at the bottom of the frequency converter (8) is engaged with the third guide rail (7); S5, loading after overhaul: after the overhaul is completed, the inverter (8) is pushed back from the overhaul unit (4) onto the third guide rail (7), the second baffle (315) is rotated until the plane where the second baffle (315) is located is parallel to the plane where the carrier plate (311) is located, the second baffle (315) is brought into contact with the third guide rail (7), force is applied to the inverter (8), the inverter (8) is pushed to move along the extension direction of the third guide rail (7), and the inverter (8) passes through the second baffle (315) and moves onto the transfer frame (31). At this time, the roller at the bottom of the inverter (8) is engaged with the second guide rail (6); S6, transfer back to the storage unit: rotate the first baffle (314), rotate the second baffle (315), at this time, the first baffle (314) and the second baffle (315) are extended upward along the plane where the carrying plate (311) is located, and the transfer frame (31) is pulled by the pull rod (313) to move along the transfer path (2) to the storage unit (1); S7, return the inverter to its original position: rotate the first baffle (314) until the plane where the first baffle (314) is located is parallel to the plane where the carrier plate (311) is located, open the opening of the storage unit (1), abut the first baffle (314) against the first guide rail (5), apply force to the inverter (8), push the inverter (8) along the extension direction of the first guide rail (5), pass the first baffle (314), and move the inverter (8) into the storage unit (1). At this time, the roller at the bottom of the inverter (8) is engaged in the first guide rail (5), and the opening of the storage unit (1) is closed, completing the entire transportation process of the inverter (8) maintenance.

Images