Cabinet type frequency converter replacement tool
By designing a replacement tool that includes a flat steel plate and a sloping steel plate, and using a threaded connection adjustment seat to adjust the level, the problem of difficult replacement of cabinet-type frequency converter inverters is solved, and a fast and stable replacement process is achieved.
Patent Information
- Application Number
- CN202520422512.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-12
AI Technical Summary
In existing technologies, the inverter replacement process of cabinet-type frequency converters is difficult, especially when pushing in and pushing out, which is prone to jamming. It requires multiple people to work together, is time-consuming and labor-intensive, and traditional methods cannot guarantee a smooth replacement.
Design a replacement tool that includes a flat steel plate and a sloping steel plate. The two plates are connected by a threaded adjusting seat, which can be adjusted to be level, forming a complete slide to ensure smooth movement of the frequency converter.
It enables rapid and stable replacement of inverters, reduces operation time and manpower requirements, improves work efficiency, and adapts to usage scenarios on uneven ground.
Smart Images
Figure CN223917838U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tool technology, and in particular to a cabinet-type frequency converter replacement tool. Background Technology
[0002] A variable-frequency drive (VFD) is a power control device that uses frequency conversion technology and microelectronics to control an AC motor by changing the frequency of its power supply. A VFD mainly consists of a rectification unit (AC to DC), a filter, an inverter (DC to AC), a braking unit, a drive unit, a detection unit, and a microprocessor unit. The VFD adjusts the voltage and frequency of the output power supply by switching its internal IGBTs, providing the required power voltage according to the actual needs of the motor, thereby achieving energy saving and speed regulation. The main circuit is the power conversion section that provides adjustable voltage and frequency power to the asynchronous motor. The main circuit of a VFD can be broadly divided into two types: voltage-source VFDs, which convert DC to AC from a voltage source, with capacitors used for DC circuit filtering; and current-source VFDs, which convert DC to AC from a current source, with inductors used for DC circuit filtering. It consists of three parts: a "rectifier" that converts power frequency into DC power, a "smoothing circuit" that absorbs voltage ripples generated in the converter and inverter, and an "inverter" that converts DC power into AC power.
[0003] Previously, due to issues with inverter power selection and cooling, inverters frequently failed, with varying numbers of inverters damaged each time. Replacing one inverter took approximately 55 minutes. Because of the limited space in the cabinet design, the main difficulty lay in pushing the inverters in and out of the cabinet, which was extremely time-consuming. The original method involved finding the right angle to smoothly push and pull the inverters in and out of the cabinet; otherwise, the inverters would get stuck on the top edge of the cabinet. Finding the right angle was very time-consuming. Traditional technology involved installing a sliding steel plate under the cabinet. The steel plate has two fixing bolt holes at the front end. It is fixed to the lower edge of the cabinet with bolts, which will form an inclined plate at about 45 degrees with the edge of the cabinet. This will easily cause the upper edge of the inverter to get stuck, and it cannot be guaranteed that the inverter will fall smoothly to the ground along this slide when it is pulled out. Due to its large size and large capacity, cabinet-type frequency inverters are very difficult to replace. Several people need to work together to operate it, especially when pushing it in and pushing it out, which is time-consuming and laborious. A special tool is needed to reduce replacement time and improve work efficiency. Utility Model Content
[0004] The main purpose of this utility model is to provide a cabinet-type frequency converter replacement tool, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A cabinet-type frequency converter replacement tool includes a flat steel plate with a sloping steel plate on one side. The bottom four corners of the flat steel plate are provided with mounting cylinders, and each mounting cylinder has an adjusting seat inserted inside. The inner wall of each mounting cylinder is drilled with internal threads, and the outer wall of each adjusting seat is provided with external threads.
[0007] Preferably, the flat steel plate and the inclined steel plate are integral.
[0008] Preferably, the ends of the flat steel plate and the inclined steel plate that are close to each other are treated with an obtuse angle.
[0009] Preferably, the adjusting seat is threadedly connected to the inner thread of the mounting cylinder via the external thread on the outer wall.
[0010] Preferably, the bottom of the planar steel plate is welded with a plurality of reinforcing ribs.
[0011] Preferably, the bottom of the inclined steel plate is welded with multiple reinforcing ribs.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. A complete sliding steel plate is formed by flat steel plates and inclined steel plates. The surfaces of the flat steel plates and inclined steel plates have no grooves, which allows the frequency converter to move smoothly from the cabinet to the flat steel plate, then from the flat steel plate to the inclined steel plate, and finally from the inclined steel plate to the ground. There will be no jamming phenomenon throughout the process, which shortens the time for replacing the frequency converter, improves work efficiency, and also has the effect of saving time and labor, and has better practicality.
[0014] 2. Since the flat steel plate is located near the cabinet, the entire device is placed on the ground. The ground near the cabinet may not be level, which may cause some leveling issues. In this case, the four adjustment seats at different positions on the bottom of the flat steel plate can be rotated. Through the threaded connection between the external and internal threads, the adjustment seats can be rotated to achieve the effect of leveling the flat steel plate after placement. This ensures the smooth replacement of the frequency converter and avoids the instability of the frequency converter due to the uneven ground. Attached Figure Description
[0015] Figure 1 This is a top view of the replacement tool for a cabinet-type frequency converter according to the present invention.
[0016] Figure 2 This is a bottom view of the replacement tool for a cabinet-type frequency converter according to the present invention.
[0017] Figure 3 This is a schematic diagram of the structure of one of the adjustment seats of the cabinet-type frequency converter replacement tool of this utility model, separated from the mounting cylinder.
[0018] In the diagram: 1. Flat steel plate; 11. Reinforcing rib one; 2. Sloping steel plate; 21. Reinforcing rib two; 3. Mounting cylinder; 31. Internal thread; 4. Adjusting seat; 41. External thread. Detailed Implementation
[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0020] like Figure 1-3 As shown, a cabinet-type frequency converter replacement tool includes a flat steel plate 1, a sloping steel plate 2 on one side of the flat steel plate 1, and mounting cylinders 3 at the four bottom corners of the flat steel plate 1. Adjusting seats 4 are inserted into the interior of each mounting cylinder 3. The inner wall of each mounting cylinder 3 is chiseled with internal threads 31, and the outer wall of each adjusting seat 4 is provided with external threads 41.
[0021] Specifically, the flat steel plate 1 and the inclined steel plate 2 are integral.
[0022] Specifically, the ends of the flat steel plate 1 and the inclined steel plate 2 that are close to each other are treated with obtuse angles, so that the frequency converter can move more smoothly from the flat steel plate 1 to the inclined steel plate 2 or from the inclined steel plate 2 to the flat steel plate 1.
[0023] Specifically, the adjusting seat 4 is threadedly connected to the inner thread 31 of the mounting cylinder 3 via the external thread 41 on the outer wall, thereby adjusting the overall level of the device.
[0024] Specifically, the bottom of the flat steel plate 1 is welded with multiple reinforcing ribs 11, and the bottom of the inclined steel plate 2 is welded with multiple reinforcing ribs 21, which increases the hardness of the flat steel plate 1 and the inclined steel plate 2 and prevents deformation from easily occurring after long-term use.
[0025] Working principle: The flat steel plate 1 and the inclined steel plate 2 form a complete sliding steel plate. The surfaces of the flat steel plate 1 and the inclined steel plate 2 have no grooves, allowing the frequency converter to move smoothly from the cabinet to the flat steel plate 1, then from the flat steel plate 1 to the inclined steel plate 2, and finally from the inclined steel plate 2 to the ground. There will be no jamming throughout the process, which saves time and effort and has good practicality. Since the flat steel plate 1 is close to the cabinet, the entire device is placed on the ground. The ground near the cabinet may not be level, which may cause some leveling problems. At this time, the four adjustment seats 4 at different positions on the bottom of the flat steel plate 1 can be rotated. Through the threaded connection between the external thread 41 and the internal thread 31, the adjustment seats 4 can be rotated to adjust the flat steel plate 1 to be level after placement, ensuring the smooth replacement of the frequency converter and avoiding the instability of the frequency converter due to the uneven ground.
[0026] The circuits, electronic components, and control modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A cabinet-type frequency converter replacement tool, comprising a flat steel plate (1), characterized in that: A sloping steel plate (2) is provided on one side of the flat steel plate (1). An installation cylinder (3) is provided at each of the four bottom corners of the flat steel plate (1). An adjustment seat (4) is inserted inside each of the installation cylinders (3). An internal thread (31) is drilled on the inner wall of each installation cylinder (3). An external thread (41) is provided on the outer wall of each adjustment seat (4).
2. The cabinet-type frequency converter replacement tool according to claim 1, characterized in that: The flat steel plate (1) and the inclined steel plate (2) are integral.
3. The cabinet-type frequency converter replacement tool according to claim 1, characterized in that: The ends of the flat steel plate (1) and the inclined steel plate (2) that are close to each other are treated with obtuse angles.
4. The cabinet-type frequency converter replacement tool according to claim 1, characterized in that: The adjusting seat (4) is threadedly connected to the inner thread (31) of the inner wall of the mounting cylinder (3) via the external thread (41) on the outer wall.
5. The cabinet-type frequency converter replacement tool according to claim 1, characterized in that: The bottom of the flat steel plate (1) is welded with multiple reinforcing ribs (11).
6. The cabinet-type frequency converter replacement tool according to claim 1, characterized in that: The bottom of the inclined steel plate (2) is welded with multiple reinforcing ribs (21).