CN221177267U - Overload protection device for frequency converter - Google Patents
Overload protection device for frequency converter Download PDFInfo
- Publication number
- CN221177267U CN221177267U CN202322809870.0U CN202322809870U CN221177267U CN 221177267 U CN221177267 U CN 221177267U CN 202322809870 U CN202322809870 U CN 202322809870U CN 221177267 U CN221177267 U CN 221177267U
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- Prior art keywords
- control box
- motor
- frequency converter
- wall
- wiring board
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- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Control Of Ac Motors In General (AREA)
Abstract
The utility model discloses an overload protection device for a frequency converter, which comprises a machine body, wherein a control box is fixedly arranged at the inner top of the machine body, a controller and a monitor are arranged on the inner wall of the control box, the detection end of the monitor penetrates through the side wall of the control box and extends out of the control box, a motor is fixedly arranged at the inner top of the control box, an output shaft of the motor penetrates through the side wall at the bottom of the control box, one end, extending out of the control box, of the output shaft of the motor is connected with a wire binding plate through a transmission device, and a wiring board is fixedly arranged on the inner wall of the machine body. According to the utility model, through the arranged controller, the monitor and the motor, when the frequency converter is detected to be in an overload state, the output shaft of the motor drives the threaded rod to rotate, meanwhile, under the limit of the fixed rods at the two sides, the internal thread block sleeved on the threaded rod drives the wire harness plate to move, and finally, the electrified column at the upper end of the wire harness plate is separated from contact with the wiring board, so that an internal circuit is disconnected, and the frequency converter element is protected.
Description
Technical Field
The utility model relates to the technical field of frequency converters, in particular to an overload protection device for a frequency converter.
Background
The frequency converter is an electric power control device for controlling the AC motor by changing the frequency of the working power supply of the motor by applying the frequency conversion technology and the microelectronics technology, and mainly comprises a rectification (alternating current-direct current), a filtering, an inversion (direct current-alternating current), a braking unit, a driving unit, a detection unit and a microprocessing unit. The frequency converter adjusts the voltage and frequency of the output power supply by switching on and off the internal IGBT, and provides the required power supply voltage according to the actual requirement of the motor, thereby achieving the purposes of energy saving and speed regulation.
The existing frequency converter is not provided with overload protection in the running process, so that internal components work in an overvoltage state for a long time, meanwhile, the temperature inside the frequency converter is increased under the overload condition, the components are easy to damage, the driving motor connected with the outside is caused to be failed, the production cost is increased, and the running stability and safety of the system are reduced. In view of the above, the present application provides an overload protection device for a frequency converter.
Disclosure of utility model
The utility model aims to solve the defects in the prior art and provides an overload protection device for a frequency converter.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides a converter overload protection device, includes the organism, the interior top fixed mounting of organism has the control box, install controller and monitor on the inner wall of control box, the detection end of monitor runs through the lateral wall of control box and extends to outside the control box, the interior top fixed mounting of control box has the motor, the output shaft of motor runs through the bottom lateral wall of control box, the output shaft of motor extends to the outer one end of control box and is connected with the wiring board through transmission, fixed mounting has the wiring board on the inner wall of organism, a plurality of through-holes have been seted up to the bottom of wiring board, install stop device jointly between wiring board and the wiring board, the upper end of wiring board is provided with a plurality of electrified posts, and a plurality of electrified post corresponds with the position of through-hole each other.
Preferably, the transmission device comprises a threaded rod fixedly connected with an output shaft of the motor, the other end of the threaded rod is rotationally connected with the inner wall of the machine body, an internal thread block is arranged on the threaded rod in a threaded connection mode, and the internal thread block is fixedly connected with the side wall of the wiring board.
Preferably, the limiting device comprises a fixed rod, a sliding block is arranged on the fixed rod in a sliding penetrating mode, one end of the sliding block is fixedly connected with the wire harness plate, and the other end of the sliding block is connected with a cleaning device.
Preferably, the upper end of the fixing rod is fixedly connected with the wiring board, the lower end of the fixing rod is fixedly connected with the inner wall of the machine body, and the cleaning device comprises a hairbrush fixedly connected with the sliding block.
Preferably, a cooling opening for cooling is formed in the side wall of the machine body, a filter screen is arranged in the cooling opening, and the filter screen corresponds to the brush in position and contacts with the brush.
The utility model has the following beneficial effects:
1. Through the controller, monitor and the motor that set up, when detecting that the converter is in overload state, the output shaft of motor drives the threaded rod and rotates, and simultaneously under the spacing of both sides dead lever, the internal thread piece of cover on the threaded rod will drive the beam line board and remove, makes electrified post and the wiring board of beam line board upper end break away from the contact, makes internal circuit disconnection, protection converter component.
2. Through the thermovent and the filter screen that set up, enable the inside heat of converter and in time give off outside, avoid the dust to enter into in the converter simultaneously, when motor operation drives the beam line board and moves down, the slider can drive the brush and move in step to make the brush clear up the filter screen, sweep the dust that accumulates on the rate net and fall, promote the radiating effect of converter.
Drawings
Fig. 1 is a schematic diagram of a front view structure of an overload protection device for a frequency converter according to the present utility model;
fig. 2 is a schematic diagram of a front view structure of an overload protection device for a frequency converter according to the present utility model;
Fig. 3 is a schematic diagram illustrating a lower view structure of an overload protection device for a frequency converter according to the present utility model.
In the figure: 1 organism, 2 control box, 3 controllers, 4 monitors, 5 motors, 6 output shafts, 7 threaded rods, 8 wiring boards, 9 through holes, 10 fixed rods, 11 wire binding boards, 12 electrified columns, 13 sliding blocks, 14 hairbrushes, 15 cooling ports and 16 filter screens.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-3, a frequency converter overload protection device, which comprises a machine body 1, the interior top fixed mounting of organism 1 has control box 2, install controller 3 and monitor 4 on the inner wall of control box 2, the detection end of monitor 4 runs through the lateral wall of control box 2 and extends to outside the control box 2, the interior top fixed mounting of control box 2 has motor 5, the bottom lateral wall of control box 2 is run through to motor 5's output shaft 6, motor 5's output shaft 6 extends to the outer one end of control box 2 and is connected with beam line board 11 through transmission, transmission includes the threaded rod 7 with motor 5's output shaft 6 fixed connection, threaded rod 7's the other end and the inner wall rotation of organism 1 are connected, threaded rod 7 goes up threaded connection and is equipped with the internal thread piece, internal thread piece and terminal plate 8's lateral wall fixed connection.
The utility model provides a fixed mounting has terminal plate 8 on the inner wall of organism 1, a plurality of through-holes 9 have been seted up to the bottom of terminal plate 8, install stop device jointly between terminal plate 8 and the beam line board 11, stop device includes dead lever 10, it runs through to slide on the dead lever 10 and is equipped with slider 13, slider 13's one end and beam line board 11 fixed connection, slider 13's the other end is connected with cleaning device, dead lever 10's upper end and terminal plate 8 fixed connection, dead lever 10's lower extreme and organism 1 inner wall fixed connection, cleaning device includes brush 14 with slider 13 fixed connection, further, controller 3 makes motor 5 operation, brush 14 can clear up filter screen 16 when finally making the circuit break, the converter can independently realize comprehensive protection, the discharge of internal heat of being convenient for alleviates follow-up maintainer operation.
The upper end of the beam line plate 11 is provided with a plurality of electrified columns 12, and the positions of the electrified columns 12 and the through holes 9 correspond to each other, and it is to be noted that when the frequency converter is in an operating state, the electrified columns 12 are connected to the wiring board 8 through the through holes 9 corresponding to the electrified columns respectively, and further, the through holes 9 arranged separately can enable circuits to be orderly arranged, so that circuit faults caused by winding at the wiring board 8 are avoided.
A cooling opening 15 for cooling is formed in the side wall of the machine body 1, a filter screen 16 is arranged in the cooling opening 15, and the filter screen 16 corresponds to the brush 14 in position and contacts with the filter screen 16 and the brush 14.
When the device is used, the monitor 4 is kept in an operating state, when the frequency converter is detected to be in an overload state, the controller 3 which is electrically connected with each other starts the motor 5 to operate, the output shaft 6 of the motor 5 drives the threaded rod 7 to rotate, the internal thread block sleeved on the threaded rod 7 drives the wire harness plate 11 to move, and meanwhile, the wire harness plate 11 moves downwards along the rated direction set by the fixing rod 10 under the limit of the fixing rod 10 and the slide block 13, so that the electrified column 12 at the top end of the wire harness plate moves out of the through hole 9 and is separated from contact with the wiring board 8, the internal circuit of the frequency converter is disconnected, the protection effect is achieved on components, meanwhile, the brush 14 which is fixedly connected with the side wall can be driven under the movement of the slide block 13, and the brush 14 is used for cleaning the filter screen 16 arranged at the heat dissipation opening 15, and the heat dissipation efficiency of the frequency converter is improved.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (5)
1. The utility model provides a converter overload protection device, includes organism (1), its characterized in that, the interior top fixed mounting of organism (1) has control box (2), install controller (3) and monitor (4) on the inner wall of control box (2), the detection end of monitor (4) runs through the lateral wall of control box (2) and extends to outside control box (2), the interior top fixed mounting of control box (2) has motor (5), the bottom lateral wall of control box (2) is run through in output shaft (6) of motor (5), the output shaft (6) of motor (5) extends to the one end outside control box (2) and is connected with beam line board (11) through transmission, fixed mounting has wiring board (8) on the inner wall of organism (1), a plurality of through-holes (9) have been seted up to the bottom of wiring board (8), install stop device jointly between wiring board (8) and beam line board (11), the upper end of beam line board (11) is provided with a plurality of live-wire columns (12), and a plurality of live-wire column (12) correspond each other with live-wire position (9).
2. The overload protection device for the frequency converter according to claim 1, wherein the transmission device comprises a threaded rod (7) fixedly connected with an output shaft (6) of the motor (5), the other end of the threaded rod (7) is rotatably connected with the inner wall of the machine body (1), an internal thread block is arranged on the threaded rod (7) in a threaded connection mode, and the internal thread block is fixedly connected with the side wall of the wiring board (8).
3. The overload protection device for the frequency converter according to claim 1, wherein the limiting device comprises a fixed rod (10), a sliding block (13) is arranged on the fixed rod (10) in a sliding penetrating mode, one end of the sliding block (13) is fixedly connected with the wire binding plate (11), and the other end of the sliding block (13) is connected with a cleaning device.
4. A frequency converter overload protection device according to claim 3, characterized in that the upper end of the fixing rod (10) is fixedly connected with the wiring board (8), the lower end of the fixing rod (10) is fixedly connected with the inner wall of the machine body (1), and the cleaning device comprises a brush (14) fixedly connected with the sliding block (13).
5. The overload protection device for the frequency converter according to claim 1, wherein a cooling opening (15) for cooling is formed in the side wall of the machine body (1), a filter screen (16) is arranged in the cooling opening (15), and the filter screen (16) corresponds to the brush (14) in position and contacts the filter screen (16) and the brush (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322809870.0U CN221177267U (en) | 2023-10-19 | 2023-10-19 | Overload protection device for frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322809870.0U CN221177267U (en) | 2023-10-19 | 2023-10-19 | Overload protection device for frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221177267U true CN221177267U (en) | 2024-06-18 |
Family
ID=91462616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322809870.0U Active CN221177267U (en) | 2023-10-19 | 2023-10-19 | Overload protection device for frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221177267U (en) |
-
2023
- 2023-10-19 CN CN202322809870.0U patent/CN221177267U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant |