Sliding support for disassembling and assembling power unit of frequency converter cabinet

Abstract

The utility model discloses a sliding support for dismounting a power unit of a frequency converter cabinet, which comprises two bearing arms, two connecting arms and a plurality of rollers, the two bearing arms are parallel to each other, the distance between the two bearing arms is larger than the width of a cuboid shell of the power unit, the front ends of the two bearing arms are lapped on a lifting vehicle in front of a door of the frequency converter cabinet, and the front ends of the two bearing arms are lapped on the lifting vehicle. The rear ends of the two bearing arms are lapped on a power unit storage rack in the frequency converter cabinet, the bottoms of the two bearing arms are connected through two connecting arms, a plurality of rollers arranged along the length direction of the bearing arms are mounted on the side wall, opposite to the other bearing arm, of each bearing arm, and the top surfaces of the rollers are flush with the top surface of the power unit storage rack. According to the utility model, the slideway formed by the rollers is used for bearing the power unit, and the power unit in the cabinet can be easily dragged to the lifting vehicle by only one person, or the power unit on the lifting vehicle can be pushed to the power unit storage rack in the cabinet, so that the replacement difficulty of the power unit is greatly reduced, the working efficiency is improved, and the safety risk is reduced.

Description

Technical Field

[0001] The utility model relates to a sliding bracket used when disassembling and assembling a frequency converter cabinet power unit in a frequency converter cabinet, and belongs to the technical field of power distribution. Background Art

[0002] Frequency converter cabinets are widely used in industrial production, transportation, construction facilities and other fields. The power unit of the frequency converter is the key part of the frequency converter. With the development of power electronics technology and control technology, the power unit of the frequency converter is becoming more and more compact. The power units of the existing inverter cabinet are arranged in groups on the power unit storage rack in the cabinet. The front panel of the power unit is equipped with terminal posts and insurance, which is about 40-50CM away from the cabinet door. Due to the heavy weight of the power unit, it takes two people to lift it. When replacing the power unit, it is generally necessary to park a lift in front of the cabinet door, adjust the height of the lift to the same height as the bottom of the power unit, and one person stands on the lift to hold the handle at the front end of the power unit, and then drag the power unit from the cabinet to the lift. In order to prevent the terminal posts and insurance at the lower end of the front panel of the power unit from colliding with the lift, it is necessary to lift it to a certain height during the dragging process; when installing it in the cabinet, two people are required to stand in the cabinet (in the gap between the power unit storage rack and the cabinet door) to hold the bottom of the power unit and move the power unit from the lift to the storage rack in the cabinet. Due to the small space in the cabinet, the operation is extremely difficult, the work efficiency is low and there are safety risks. Therefore, it is necessary to improve the existing power unit disassembly and assembly method. Utility Model Content

[0003] The purpose of the utility model is to provide a sliding bracket for disassembling and assembling the power unit of the frequency converter cabinet in view of the drawbacks of the prior art, so as to reduce the difficulty of disassembling and assembling the power unit, improve work efficiency and reduce safety risks.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A sliding bracket for disassembling and assembling a power unit of a frequency converter cabinet comprises two bearing arms, two connecting arms and a plurality of rollers, wherein the two bearing arms are parallel to each other and the distance between them is greater than the width of a rectangular shell of the power unit, the front ends of the two bearing arms are placed on a lifting vehicle in front of a frequency converter cabinet door, and the rear ends are placed on a power unit storage rack in the frequency converter cabinet, the bottoms of the two bearing arms are connected by two connecting arms, and a plurality of rollers arranged along the length direction of each bearing arm are installed on the side wall opposite to the other bearing arm, and the top surface of the rollers is flush with the top surface of the power unit storage rack.

[0006] The above-mentioned sliding bracket for disassembling and assembling the power unit of the inverter cabinet, each bearing arm includes an intermediate rectangular tube, two end rectangular tubes and two inverted U-shaped connecting plates, an end rectangular tube is respectively arranged at the front end and the rear end of the intermediate rectangular tube, each end rectangular tube is connected to the intermediate rectangular tube through an inverted U-shaped connecting plate, one end of the inverted U-shaped connecting plate is slidably inserted into the intermediate rectangular tube, and the other end is slidably inserted into the end rectangular tube, a fixing pin passes through the circular pin holes on the side walls of the end rectangular tube and the inverted U-shaped connecting plate to connect the end rectangular tube and the inverted U-shaped connecting plate together, and another fixing pin passes through the side wall of the intermediate rectangular tube The circular pin holes on the top and the long pin holes on the side walls of the inverted U-shaped connecting plate connect the intermediate rectangular tube and the inverted U-shaped connecting plate together, the top plate of the end rectangular tube located at the front end of the intermediate rectangular tube extends forward and is placed on the lifting vehicle in front of the inverter cabinet door, the top plate of the end rectangular tube located at the rear end of the intermediate rectangular tube extends backward and is placed on the power unit storage rack in the inverter cabinet, the rollers are fixed on the side walls of the end rectangular tube and the intermediate rectangular tube, one connecting arm is installed between the bottom plates of the end rectangular tube at the front ends of the two bearing arms, and the other connecting arm is installed between the bottom plates of the end rectangular tube at the rear ends of the two bearing arms.

[0007] The above-mentioned sliding bracket for disassembling and assembling the power unit of the inverter cabinet, each bearing arm also includes a pressure plate, which is placed horizontally and its two ends are respectively located in the two inverted U-shaped connecting plates, and the two fixing screws respectively pass through the circular through holes at both ends of the top plate of the middle rectangular tube and then pass through the through long holes on the top plates of the two inverted U-shaped connecting plates and then screwed into the threaded holes on the pressure plate.

[0008] The sliding bracket for disassembling and assembling the power unit of the inverter cabinet, each connecting arm includes two strip-shaped connecting pieces, one end of which is fixed together by a fixing screw, and the other end is connected to the two connecting arms respectively by a fixing screw.

[0009] In the above-mentioned sliding bracket for disassembling and assembling the power unit of the frequency converter cabinet, the top surface of the roller is lower than the top surfaces of the middle rectangular tube and the end rectangular tube.

[0010] The utility model utilizes a slideway composed of multiple rollers to carry the power unit of the inverter cabinet. Only one person is needed to easily drag the power unit in the cabinet onto the lifting vehicle, or push the power unit on the lifting vehicle onto the power unit storage rack in the cabinet, which greatly reduces the difficulty of replacing the power unit, improves work efficiency, and also reduces safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0012] Figure 1 It is the front view of the utility model;

[0013] Figure 2 It is a side view of the utility model;

[0014] Figure 3 This is the top view of the utility model;

[0015] Figure 4 is the structural diagram of the intermediate rectangular tube, where Figure 4 (a) is the front view; Figure 4 (b) is a side view; Figure 4 (c) is the top view;

[0016] Figure 5 It is a schematic diagram of the structure of the inverted U-shaped connecting plate, where Figure 5 (a) is the front view; Figure 5 (b) is a side view; Figure 5 (c) is the top view.

[0017] The numbers in the figure are as follows: 1. end rectangular tube, 2. middle rectangular tube, 3. inverted U-shaped connecting plate, 4. pressure plate, 5. fixing pin, 6. fixing screw, 7. roller, 8. connecting arm, 9. lifting car, 10. power unit storage rack. DETAILED DESCRIPTION

[0018] See also Figure 1-5 The utility model includes two load-bearing arms with adjustable lengths, two connecting arms 8 with adjustable lengths and a plurality of rollers 7. The two load-bearing arms are parallel to each other and the distance between them is slightly larger than the width of the rectangular shell of the power unit. The front ends of the two load-bearing arms are placed on a lifting vehicle 9 in front of the inverter cabinet door, and the rear ends are placed on a power unit storage rack 10 in the inverter cabinet. The bottoms of the two load-bearing arms are connected by two connecting arms 8. A plurality of rollers 7 arranged along the length direction of the load-bearing arms are installed on the side wall opposite to the other load-bearing arm, and the top surface of the roller 7 is flush with the top surface of the power unit storage rack 10.

[0019] Each load-bearing arm includes two end rectangular tubes 1 , a middle rectangular tube 2 , two inverted U-shaped connecting plates 3 , a pressing plate 4 , four fixing pins 5 and a plurality of fixing screws 6 .

[0020] An end rectangular tube 1 is provided at the front and rear ends of the intermediate rectangular tube 2, and each end rectangular tube 1 is connected to the intermediate rectangular tube 2 through an inverted U-shaped connecting plate 3. The specific connection method is as follows: one end of the inverted U-shaped connecting plate 3 is slidably inserted into the intermediate rectangular tube 2, and the other end is slidably inserted into the end rectangular tube 1. A fixing pin 5 passes through the pin holes on the side walls of the end rectangular tube 1 and the inverted U-shaped connecting plate 3 to connect the end rectangular tube 1 and the inverted U-shaped connecting plate 3 together. A fixing pin 5 passes through the pin holes on the side walls of the intermediate rectangular tube 2 and the inverted U-shaped connecting plate 3 to connect the intermediate rectangular tube 2 and the inverted U-shaped connecting plate 3 together. The pin holes on the side walls of the inverted U-shaped connecting plate 3 are long holes in the horizontal direction. The fixing pin 5 can slide in the long holes, so that the inverted U-shaped connecting plate 3 can slide along the inner wall of the intermediate rectangular tube 2, thereby adjusting the length of the bearing arm to make it suitable for inverter cabinets of different specifications.

[0021] The pressure plate 4 is placed horizontally and its two ends are respectively located in the two inverted U-shaped connecting plates 3. The two fixing screws 6 respectively pass through the circular through holes at both ends of the top plate of the middle rectangular tube 2 and then pass through the through long holes on the top plates of the two inverted U-shaped connecting plates 3 and then are screwed into the threaded holes on the pressure plate 4. When the inverted U-shaped connecting plate 3 is inserted into the middle rectangular tube 2 by an appropriate distance, the fixing screws 6 are rotated to move the pressure plate 4 toward the inverted U-shaped connecting plate 3, and the middle rectangular tube 2 and the inverted U-shaped connecting plate 3 are locked, thereby achieving the purpose of fixing the middle rectangular tube 2 and the inverted U-shaped connecting plate 3.

[0022] The top plate of the end rectangular tube 1 located at the front end of the middle rectangular tube 2 extends forward and is placed on the lifting vehicle 9 in front of the inverter cabinet door, and the top plate of the end rectangular tube 1 located at the rear end of the middle rectangular tube 2 extends backward and is placed on the power unit storage rack 10 in the inverter cabinet. The roller 7 is fixed on the side walls of the end rectangular tube 1 and the middle rectangular tube 2, and the top surface of the roller 7 is lower than the top surfaces of the middle rectangular tube 2 and the end rectangular tube 1. When the top plate of the end rectangular tube 1 is placed on the power unit storage rack 10 in the inverter cabinet, the top surface of the roller 7 is just flush with the top surface of the power unit storage rack 10, which is convenient for dragging the power unit to slide on the roller 7, and the middle rectangular tube 2 and the end rectangular tube 1 play a limiting role on the power unit to prevent it from deviating from the slideway formed by multiple rollers 7. Multiple rollers 7 are used to carry the power unit to achieve the purpose of reducing work intensity.

[0023] One connecting arm 8 is installed between the bottom plates of the end rectangular tubes 1 at the front ends of the two load-bearing arms, and the other connecting arm 8 is installed between the bottom plates of the end rectangular tubes 1 at the rear ends of the two load-bearing arms. Each connecting arm 8 includes two strip-shaped connecting pieces, one end of which is fixed together by a fixing screw 6, and the other end is respectively connected to the two connecting arms 8 by the fixing screw 6. The distance between the two load-bearing arms can be adjusted by adjusting the angle between the two strip-shaped connecting pieces, so that the utility model is suitable for power units of different widths.

[0024] When it is necessary to extract and put in the power unit, one end of the utility model is placed on the lifting vehicle 9 in front of the cabinet door, and the other end is placed on the power unit storage rack 10 in the inverter cabinet, and the power unit to be extracted and put in is aligned with the gap between the two bearing arms, and the rear end of each bearing arm is located in the gap between two adjacent power units. At this time, the top surface of the roller 7 is just flush with the top surface of the power unit storage rack 10, and the power unit is dragged to slide on the roller 7. One person can easily use the roller 7 to drag the power unit in the cabinet to the lifting vehicle 9, or push the power unit on the lifting vehicle 9 to the power unit storage rack 10 in the cabinet, which greatly reduces the difficulty of operation, improves work efficiency, and eliminates safety hazards.

[0025] The utility model has the advantages of simple structure, convenient installation, good stability, etc., and is suitable for inverter cabinet power units of various models and sizes.

Claims

1. A sliding bracket for disassembling and assembling a power unit of a frequency converter cabinet, characterized in that: The invention comprises two bearing arms, two connecting arms (8) and a plurality of rollers (7), wherein the two bearing arms are parallel to each other and the distance between them is greater than the width of the rectangular shell of the power unit, the front ends of the two bearing arms are placed on a lifting vehicle (9) in front of the inverter cabinet door, and the rear ends are placed on a power unit storage rack (10) in the inverter cabinet, the bottoms of the two bearing arms are connected by two connecting arms (8), and a plurality of rollers (7) arranged along the length direction of each bearing arm are installed on the side wall opposite to the other bearing arm, and the top surface of the rollers (7) is flush with the top surface of the power unit storage rack (10).

2. A sliding bracket for disassembling and assembling a power unit of a frequency converter cabinet according to claim 1, characterized in that: Each load-bearing arm comprises a middle rectangular tube (2), two end rectangular tubes (1) and two inverted U-shaped connecting plates (3). An end rectangular tube (1) is provided at the front end and the rear end of the middle rectangular tube (2). Each end rectangular tube (1) is connected to the middle rectangular tube (2) via an inverted U-shaped connecting plate (3). One end of the inverted U-shaped connecting plate (3) is slidably inserted into the middle rectangular tube (2), and the other end is slidably inserted into the end rectangular tube (1). A fixing pin (5) passes through a circular pin hole on the side wall of the end rectangular tube (1) and the inverted U-shaped connecting plate (3) to connect the end rectangular tube (1) and the inverted U-shaped connecting plate (3) together. Another fixing pin (5) passes through a circular pin hole on the side wall of the middle rectangular tube (2) and The long strip pin hole on the side wall of the inverted U-shaped connecting plate (3) connects the intermediate rectangular tube (2) and the inverted U-shaped connecting plate (3) together. The top plate of the end rectangular tube (1) located at the front end of the intermediate rectangular tube (2) extends forward and is placed on a lifting vehicle (9) in front of the inverter cabinet door. The top plate of the end rectangular tube (1) located at the rear end of the intermediate rectangular tube (2) extends backward and is placed on a power unit storage rack (10) in the inverter cabinet. The roller (7) is fixed on the side walls of the end rectangular tube (1) and the intermediate rectangular tube (2). One connecting arm (8) is installed between the bottom plates of the end rectangular tube (1) at the front ends of the two bearing arms, and the other connecting arm (8) is installed between the bottom plates of the end rectangular tube (1) at the rear ends of the two bearing arms.

3. A sliding bracket for disassembling and assembling a power unit of a frequency converter cabinet according to claim 2, characterized in that: Each bearing arm further comprises a pressing plate (4), wherein the pressing plate (4) is placed horizontally and its two ends are respectively located in the two inverted U-shaped connecting plates (3), and the two fixing screws (6) respectively pass through the circular through holes at the two ends of the top plate of the middle rectangular tube (2), and then respectively pass through the through long holes on the top plates of the two inverted U-shaped connecting plates (3) and are screwed into the threaded holes on the pressing plate (4).

4. A sliding bracket for disassembling and assembling a power unit of a frequency converter cabinet according to claim 3, characterized in that: Each connecting arm (8) comprises two strip-shaped connecting pieces, one end of which is fixed together by a fixing screw (6), and the other end of which is respectively connected to the two connecting arms (8) by the fixing screw (6).

5. The sliding bracket for disassembling and assembling the power unit of the frequency converter cabinet according to claim 4 is characterized in that: The top surface of the roller (7) is lower than the top surfaces of the middle rectangular tube (2) and the end rectangular tube (1).

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