Split type three-level explosion-proof frequency converter core

Abstract

The invention discloses a split type three-level explosion-proof frequency converter machine core, and relates to the technical field of explosion-proof frequency converters. The main points of the technical scheme are that the device comprises a power supply box body which is horizontally arranged and a rectification inversion box body which is vertically arranged, a positioning mechanism is arranged between the power supply box body and the rectification inversion box body, the rectification inversion box body comprises a bottom plate, four side plates and a top plate, the surface of the top plate is provided with an access hole, and the top plate is provided with an opening. A first connecting cover covering the access hole is hinged to the side, located on the access hole, of the surface of the top plate. The invention aims to provide a split type three-level explosion-proof frequency converter machine core.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proof frequency converters, and more specifically, to a split three-level explosion-proof frequency converter movement. Background Art

[0002] The explosion-proof inverter movement is an electric power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the working power frequency of the motor. The explosion-proof inverter movement mainly includes electrical components such as rectifier modules, inverter modules, energy storage components, input and output filter components, etc.

[0003] Existing explosion-proof inverter movements are all integrated and usually placed on the back plate of the inverter case, so that the stress of the entire movement weight acts mostly on the back plate, reducing the explosion-proof performance of the explosion-proof case; due to the integrated structure, when repairing a module, it must be disassembled as a whole, which greatly increases the maintenance cost.

[0004] Therefore, a new technical solution is urgently needed to solve the above technical problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the object of the present invention is to provide a split three-level explosion-proof inverter movement.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a split three-level explosion-proof inverter movement, including a horizontally arranged power supply box and a vertically arranged rectifier inverter box, a positioning mechanism is arranged between the power supply box and the rectifier inverter box, the rectifier inverter box includes a bottom plate, four side plates and a top plate, an inspection port is opened on the surface of the top plate, and a first connecting cover is hinged on one side of the top plate surface located at the inspection port and is arranged at the inspection port.

[0007] The present invention is further configured as follows: a second connecting cover is hingedly connected to an outer side wall of the first connecting cover, the second connecting cover is arranged on the outer side surface of the first connecting cover, and the internal space of the second connecting cover and the outer surface of the first connecting cover form a closed installation space.

[0008] The present invention is further configured as follows: a first hinge is provided between the top outer side wall of the first connection cover and the top plate, and a second hinge is provided between the top outer side wall of the second connection cover and the top outer side wall of the first connection cover.

[0009] The present invention is further configured such that: a transparent cover is provided on the outer surface of the second connection cover.

[0010] The present invention is further configured as follows: the positioning mechanism includes a lower fixed plate fixed to the bottom of the chassis and a side fixed plate fixed to the inner wall of the chassis, the power supply box is fixedly connected to the upper surface of the lower fixed plate, the rectifier inverter box is fixedly connected to the surface of the side fixed plate facing the lower fixed plate, and also includes a positioning component for positioning the lower fixed plate and the side fixed plate.

[0011] The present invention is further configured as follows: the positioning assembly includes positioning columns arranged on the surface of the lower fixing plate and located on both sides of the side fixing plates, and the opposite side walls of the two positioning columns are provided with positioning grooves for inserting the side fixing plates in the vertical direction.

[0012] The present invention is further configured as follows: the positioning column is provided with a sliding groove running through the top thereof, a sliding rod is slidably connected in the sliding groove along a vertical direction, a horizontal connecting plate is provided on the top of the sliding rod, two vertically arranged guide plates are provided on the upper surface of the connecting plate, a positioning rod is horizontally penetrated and slidably connected on the guide plate, both side walls of the side fixing plate are provided with positioning grooves for inserting the positioning rod, and also include a driving member for driving the sliding rod to slide along the sliding groove.

[0013] The present invention is further configured as follows: the positioning column is provided with a through slot connected to the sliding slot, the other side of the through slot is connected to the positioning slot, the driving member includes a gear arranged in the through slot, a first rack meshing with the gear is arranged on one side surface of the sliding rod, and a second rack meshing with the gear is arranged on both side walls of the side fixing plate, after the side fixing plate is fully inserted into the positioning slot, the sliding rod rises, and the end of the positioning rod is directly opposite to the positioning slot.

[0014] The present invention is further configured as follows: an abutment plate is provided at one end of the positioning rod away from the positioning groove, and the positioning rod is sleeved between the abutment plate and the guide plate and fixedly connected with a spring.

[0015] The present invention has the following beneficial effects: by designing the power supply box and the rectifier inverter box separately, it is convenient to transport the two separately before installation, reducing the overall weight and facilitating storage and transportation; and by assembling the two after installing and debugging them separately, the installation difficulty is greatly reduced and the installation cost is reduced; when the internal components of the rectifier inverter box fail, the internal components can be inspected and maintained by opening the first connecting cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of this embodiment;

[0017] Figure 2 This is a schematic diagram of the structure of the rectifier inverter box of this embodiment;

[0018] Figure 3 for Figure 2 A partial enlarged schematic diagram of the middle A part;

[0019] Figure 4 Schematic diagram of the structure of the positioning mechanism of this embodiment;

[0020] Figure 5 This is a schematic diagram of the structure of the lower fixing plate and the positioning assembly of this embodiment;

[0021] Figure 6 This is a schematic diagram of the structure of the lower fixing plate of this embodiment;

[0022] Figure 7 Schematic diagram of the structure of the sliding rod of this embodiment;

[0023] Figure 8 Schematic diagram of the structure of the side fixing plate of this embodiment.

[0024] Description of the drawings: 1. Power supply box; 2. Rectifier inverter box; 3. Bottom plate; 4. Four sides; 5. Top plate; 6. First connecting cover; 7. Second connecting cover; 8. Transparent cover; 9. First hinge; 10. Second hinge; 11. Lower fixing plate; 12. Side fixing plate; 13. Positioning column; 14. Plug-in slot; 15. Sliding slot; 16. Sliding rod; 17. Connecting plate; 18. Guide plate; 19. Positioning rod; 20. Positioning slot; 21. Through slot; 22. Gear; 23. First rack; 24. Second rack; 25. Abutment plate; 26. Spring. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0026] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0027] As shown in the figure, a split three-level explosion-proof inverter movement includes a chassis (not shown in the figure), and also includes a power supply box 1 horizontally arranged in the chassis and a rectifier inverter box 2 vertically arranged in the chassis. A positioning mechanism is arranged between the power supply box 1 and the rectifier inverter box 2. The rectifier inverter box 2 includes a bottom plate 3, four side plates 4 and a top plate 5. An inspection port is opened on the surface of the top plate 5. A first connecting cover 6 is hinged on the surface of the top plate 5 at one side of the inspection port and is arranged at the inspection port.

[0028] By designing the power supply box 1 and the rectifier inverter box 2 separately, it is convenient to transport them separately before installation, reducing the overall weight and facilitating storage and transportation; and by assembling and installing them in the chassis after installing and debugging them separately, the installation difficulty and installation cost are greatly reduced; when the internal components of the rectifier inverter box fail, the internal components can be inspected and maintained by opening the first connecting cover 6.

[0029] The second connection cover 7 is hingedly connected to an outer wall of the first connection cover 6. The second connection cover 7 is set on the outer surface of the first connection cover 6. The inner space of the second connection cover 7 and the outer surface of the first connection cover 6 form a closed installation space. The outer surface of the second connection cover 7 is fixedly connected with a transparent cover 8 by bolts. During installation, vulnerable components can be installed on the surface of the first connection cover 6, so that the components on the surface of the first connection cover 6 can be inspected and maintained by opening the second connection cover 7; the indicator light group that needs to be observed is installed on the surface of the second connection cover 7, and the transparent cover 8 is used to observe it.

[0030] A first hinge 9 is provided between the top outer wall of the first connection cover 6 and the top plate 5, and a second hinge 10 is provided between the top outer wall of the second connection cover 7 and the top outer wall of the first connection cover 6. Both the first hinge 9 and the second hinge 10 are hinges. After the equipment is installed, the first connection cover 6 and the second connection cover 7 are in a closed state under the action of their own gravity.

[0031] The positioning mechanism includes a lower fixing plate 11 fixed to the bottom of the chassis and a side fixing plate 12 fixed to the inner wall of one side of the chassis. The power supply box 1 is fixedly connected to the upper surface of the lower fixing plate 11, and the rectifier inverter box 2 is fixedly connected to the surface of the side fixing plate 12 facing the lower fixing plate 11. It also includes a positioning component for positioning the lower fixing plate 11 and the side fixing plate 12. During installation, one side of the lower fixing plate 11 is abutted against the inner wall of the chassis and fixedly connected to the bottom of the chassis, and finally the side fixing plate 12 is positioned by the positioning component to ensure the stability of the installation of the power supply box 1 and the rectifier inverter box 2.

[0032] The positioning assembly includes positioning columns 13 arranged on the surface of the lower fixing plate 11 and located on both sides of the side fixing plate 12. The side walls opposite to the two positioning columns 13 are provided with plug-in slots 14 for inserting the side fixing plates 12 in the vertical direction. After the lower fixing plate 11 is fixed to the bottom of the chassis, the side fixing plate 12 with the rectifier inverter box 2 installed is inserted into the plug-in slots 14 to ensure the stability of the side fixing plate 12.

[0033] The positioning column 13 is provided with a sliding groove 15 running through the top thereof, a sliding rod 16 is slidably connected in the sliding groove 15 in the vertical direction, a horizontal connecting plate 17 is provided on the top of the sliding rod 16, two vertically arranged guide plates 18 are provided on the upper surface of the connecting plate 17, a positioning rod 19 is horizontally penetrated and slidably connected on the guide plate 18, and the two side walls of the side fixing plate 12 are provided with positioning grooves 20 for inserting the positioning rod 19, and also include a driving member for driving the sliding rod 16 to slide along the sliding groove 15. After the side fixing plate 12 is inserted into the plug-in groove 14, the sliding rod 16 is driven by the driving member to slide along the sliding groove 15, so that the positioning rod 19 and the positioning groove 20 are at the same height, and then the positioning rod 19 is inserted into the positioning groove 20 to further position the side fixing plate 12.

[0034] The positioning column 13 is provided with a through slot 21 connected to the sliding slot 15, and the other side of the through slot 21 is connected to the plug-in slot 14. The driving member includes a gear 22 arranged in the through slot 21. A first rack 23 meshing with the gear 22 is provided on one side surface of the sliding rod 16, and a second rack 24 meshing with the gear 22 is provided on both side walls of the side fixing plate 12. When the side fixing plate 12 is inserted into the plug-in slot 14, when the second rack 24 meshes with the gear 22 and drives it to rotate, the sliding rod 16 is simultaneously driven to rise through the first rack 23. After the side fixing plate 12 is fully inserted into the plug-in slot 14, the sliding rod 16 rises, and the end of the positioning rod 19 is opposite to the positioning slot 20, so that the positioning rod 19 can be inserted into the positioning slot 20.

[0035] An abutment plate 25 is provided at one end of the positioning rod 19 away from the positioning groove 20. The positioning rod 19 is located between the abutment plate 25 and the guide plate 18 and is fixedly connected with a spring 26. By pulling the positioning rod 19 outward and inserting the side fixing plate 12 into the positioning groove 14, the positioning rod 19 is released, and under the action of the elastic force of the spring 26, the positioning rod 19 is inserted into the positioning groove 14 to further enhance the positioning effect of the side fixing plate 12.

[0036] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A split three-level explosion-proof inverter movement, characterized in that: The invention comprises a chassis, a power supply box (1) horizontally arranged in the chassis, and a rectifier inverter box (2) vertically arranged in the chassis, a positioning mechanism is arranged between the power supply box (1) and the rectifier inverter box (2), the rectifier inverter box (2) comprises a bottom plate (3), four side plates (4) and a top plate (5), a surface of the top plate (5) is provided with an inspection opening, and a first connection cover (6) is hingedly connected to the surface of the top plate (5) at one side of the inspection opening and arranged at the inspection opening.

2. A split three-level explosion-proof inverter movement according to claim 1, characterized in that: A second connecting cover (7) is hingedly connected to an outer wall of the first connecting cover (6); the second connecting cover (7) is arranged on the outer surface of the first connecting cover (6); and the internal space of the second connecting cover (7) and the outer surface of the first connecting cover (6) form a closed installation space.

3. A split three-level explosion-proof inverter movement according to claim 2, characterized in that: A first hinge (9) is provided between the top outer wall of the first connecting cover (6) and the top plate (5), and a second hinge (10) is provided between the top outer wall of the second connecting cover (7) and the top outer wall of the first connecting cover (6).

4. The split three-level explosion-proof inverter movement according to claim 1 is characterized in that: The outer surface of the second connection cover (7) is provided with a transparent cover (8).

5. The split three-level explosion-proof inverter movement according to claim 1 is characterized in that: The positioning mechanism comprises a lower fixing plate (11) fixed to the bottom of the chassis and a side fixing plate (12) fixed to the inner wall of the chassis, the power supply box (1) is fixedly connected to the upper surface of the lower fixing plate (11), the rectifier inverter box (2) is fixedly connected to the surface of the side fixing plate (12) facing the lower fixing plate (11), and also comprises a positioning component for positioning the lower fixing plate (11) and the side fixing plate (12).

6. A split three-level explosion-proof inverter movement according to claim 5, characterized in that: The positioning assembly comprises positioning columns (13) arranged on the surface of the lower fixing plate (11) and located on both sides of the side fixing plates (12); the opposite side walls of the two positioning columns (13) are provided with insertion grooves (14) for the side fixing plates (12) to be inserted in the vertical direction.

7. A split three-level explosion-proof inverter movement according to claim 6, characterized in that: The positioning column (13) is provided with a sliding groove (15) passing through the top thereof, a sliding rod (16) is slidably connected in the sliding groove (15) along the vertical direction, a horizontal connecting plate (17) is provided on the top of the sliding rod (16), two vertically arranged guide plates (18) are provided on the upper surface of the connecting plate (17), a positioning rod (19) is horizontally penetrated and slidably connected on the guide plate (18), and positioning grooves (20) for inserting the positioning rod (19) are provided on both side walls of the side fixing plate (12), and a driving member for driving the sliding rod (16) to slide along the sliding groove (15) is also included.

8. The split three-level explosion-proof inverter movement according to claim 7 is characterized in that: The positioning column (13) is provided with a through slot (21) connected to the sliding slot (15), and the other side of the through slot (21) is connected to the plug-in slot (14). The driving member includes a gear (22) arranged in the through slot (21). A first rack (23) meshing with the gear (22) is arranged on a side surface of the sliding rod (16), and a second rack (24) meshing with the gear (22) is arranged on both side walls of the side fixing plate (12). After the side fixing plate (12) is fully inserted into the plug-in slot (14), the sliding rod (16) rises, and the end of the positioning rod (19) is directly opposite to the positioning slot (20).

9. A split three-level explosion-proof inverter movement according to claim 8, characterized in that: An abutment plate (25) is provided at one end of the positioning rod (19) away from the positioning groove (20); the positioning rod (19) is sleeved between the abutment plate (25) and the guide plate (18) and is fixedly connected with a spring (26).

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