Automatic reset variable frequency drive restart device

Abstract

The utility model relates to frequency converter equipment technical field discloses an automatic reset frequency converter restart device, including the bottom plate, the upper surface fixedly connected with fixed box of bottom plate, the inside fixedly connected with motor of fixed box, the output of motor is provided with the rotary column, the outer wall rotationally connected with sleeve of rotary column, the inside fixedly connected with slide post of sleeve, the inside setting of sleeve has the spring, the outer wall fixedly connected with sliding sheet of spring, the outer wall sliding connection in the inside of sleeve of sliding sheet, the outer wall fixedly connected with the touch pressure board of sleeve, the upper surface of bottom plate is provided with starting subassembly, in the utility model, through starting motor can drive rotary column rotation, through the mutual cooperation between sleeve, slide post, spring, sliding sheet and touch pressure board drive touch pressure board to the stable touch pressure of starting switch to reset immediately after touch pressure, reach the effect that saves manpower, improves the reliability and stability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter equipment technology, and in particular to an automatic reset frequency converter restart device. Background Technology

[0002] A frequency converter is a power electronic device that controls the speed and torque of a motor by changing the frequency of the power supply to the motor. Frequency converters are widely used. However, during operation, frequency converters may encounter various sudden failures, causing equipment shutdown. Although these failures may only be temporary, if operation cannot be restored in time, it may lead to production line stagnation, affecting production progress and economic benefits. Therefore, an automatic reset frequency converter restart device is needed.

[0003] A search revealed Chinese Patent Publication No. CN209283082U, which discloses a device capable of enabling inverter restart functionality. The device includes an inverter housing, a cover mounted on the front surface of the housing, a control board fixedly connected to the front surface of the cover, and an internal power supply. A heat sink is integrally formed with the inverter housing on its top. A wiring board is fixedly connected to the lower part of the front surface of the housing near the cover. A protection component is provided on the rear surface of the housing. The device utilizes the restart function of a microcomputer-based integrated protection system to achieve "power dip" restart of the inverter. The research focuses on a microcomputer-based integrated protection system with a restart function and customizable program compilation capabilities. Experiments were conducted to improve the anti-electrical performance of the microcomputer-based integrated protection system, and the low-voltage integrated protection restart action output configuration was adjusted.

[0004] In the aforementioned utility model, the restart function of the microcomputer integrated protection is used to realize the "power dip" restart of the frequency converter. The microcomputer integrated protection device is designed with a restart function, but in actual use, there are still problems such as unstable startup and inability to quickly restart after encountering a sudden fault. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an automatic reset inverter restart device, which aims to improve the problem that the inverter cannot be quickly restarted after encountering a sudden failure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic reset inverter restart device, comprising a base plate, a fixed box fixedly connected to the upper surface of the base plate, a motor fixedly connected inside the fixed box, a rotating column provided at the output end of the motor, a sleeve rotatably connected to the outer wall of the rotating column, the outer wall of the sleeve slidably connected to the inside of the fixed box, a sliding column fixedly connected inside the sleeve, the bottom end of the sliding column slidably connected to the outer wall of the rotating column, a spring provided inside the sleeve, a sliding plate fixedly connected to the outer wall of the spring, the outer wall of the sliding plate slidably connected to the inside of the sleeve, a pressure plate fixedly connected to the outer wall of the sleeve, and a starting assembly provided on the upper surface of the base plate.

[0007] Through the above technical solution:

[0008] The base plate supports the device, and the fixing box supports and fixes the pressing device. The motor drives the rotating column to rotate. The outer wall of the rotating column is provided with an arc-shaped groove to limit the sliding column. In conjunction with the sliding groove on the upper surface of the fixing box, the rotating column can drive the sliding column to slide back and forth in a straight line when it rotates. The sliding column is fixed on the sleeve and can drive the sleeve to slide back and forth in a straight line. The sleeve is provided with a spring and a sliding plate inside to ensure that the sleeve slides back and forth stably inside the fixing box. In turn, the sliding of the sleeve can drive the pressing plate to move. The pressing plate is located directly in front of the start switch to ensure that the pressing plate accurately presses the start switch when it moves, thereby achieving the effect of automatic pressing switch.

[0009] As a further description of the above technical solution:

[0010] The starting assembly includes a frequency converter body, the lower surface of which is fixedly connected to the upper surface of the base plate, and a start switch is provided on the outer wall of the frequency converter body.

[0011] Through the above technical solution:

[0012] The inverter body is located above the base plate and behind the touch device. A start switch is installed on the outer wall of the inverter body to control the inverter body. The start switch is used to start the inverter body.

[0013] As a further description of the above technical solution:

[0014] A current sensor is installed on the outer wall of the inverter body, and the current sensor is electrically connected to a transmission module.

[0015] Through the above technical solution:

[0016] A current sensor is installed on the outer wall of the inverter body. The current sensor can monitor the current status of the inverter body. When the current of the inverter body changes, the current sensor detects the current signal, converts the current signal into a standard electrical signal, and transmits the electrical signal to the transmission module.

[0017] As a further description of the above technical solution:

[0018] The transmission module is connected to a signal processing module, and the signal processing module includes a microprocessor.

[0019] Through the above technical solution:

[0020] The transmission module transmits electrical signals to the signal processing module. The signal processing module uses its internal microprocessor to intelligently analyze the current signals and determine whether the inverter meets the start-up conditions. When the conditions are met, the module generates a start-up command.

[0021] As a further description of the above technical solution:

[0022] The output of the signal processing module is connected to a wireless transmitter, and the output of the wireless transmitter is connected to a wireless receiver.

[0023] Through the above technical solution:

[0024] The start command generated by the signal processing module is sent to the wireless transmitter. Upon receiving the start command, the wireless transmitter immediately converts it into a wireless signal and transmits it quickly to the highly reliable wireless receiver via wireless communication technology.

[0025] As a further description of the above technical solution:

[0026] The outer wall of the fixed box is provided with a power supply module, which is electrically connected to the wireless receiver.

[0027] Through the above technical solution:

[0028] A power supply module is installed on the outer wall of the fixed box. After the wireless receiver receives the wireless signal, it performs decoding processing and controls the power supply module through the built-in drive circuit.

[0029] As a further description of the above technical solution:

[0030] The power supply module has a battery pack inside, and the battery pack is electrically connected to the power supply module.

[0031] Through the above technical solution:

[0032] The power supply module is equipped with a battery pack, which can provide a continuous and stable power supply to the device and power the power supply module in the event of a sudden failure.

[0033] As a further description of the above technical solution:

[0034] The power supply module is electrically connected to the starting module, and the starting module is electrically connected to the motor.

[0035] Through the above technical solution:

[0036] The power supply module provides the necessary power support to the starting module. After the starting module starts, it supplies power to the motor to ensure that the motor starts quickly and drives the contact device to work.

[0037] This utility model has the following beneficial effects:

[0038] 1. In this utility model, the starting motor can drive the rotating column to rotate. Through the cooperation between the sleeve, sliding column, spring, sliding plate and contact plate, the contact plate can stably press the start switch and immediately reset after pressing, thus saving manpower and improving the reliability and stability of the equipment.

[0039] 2. In this utility model, the cooperation between the wireless receiver, current sensor, signal processing module, wireless transmitter, power supply module and battery pack can achieve the effect of timely detection of inverter current changes and automatic restart, without the need for complex circuit design, thus reducing maintenance costs. Attached Figure Description

[0040] Figure 1 This is a perspective view of an automatic reset inverter restart device proposed in this utility model;

[0041] Figure 2 This is a partial structural diagram of the motor of an automatic reset inverter restart device proposed in this utility model;

[0042] Figure 3 This is a cross-sectional view of the internal structure of the fixing box of the automatic reset inverter restart device proposed in this utility model;

[0043] Figure 4 This is a partial structural diagram of the start switch of an automatic reset inverter restart device proposed in this utility model;

[0044] Figure 5 This is a block diagram showing the module connection of an automatic reset inverter restart device proposed in this utility model.

[0045] Legend:

[0046] 1. Base plate; 2. Fixing box; 3. Motor; 4. Rotating column; 5. Sleeve; 6. Sliding column; 7. Spring; 8. Sliding plate; 9. Contact plate; 10. Starting assembly; 1001. Inverter body; 1002. Start switch; 11. Wireless receiver; 12. Current sensor; 13. Signal processing module; 14. Wireless transmitter; 15. Power supply module; 16. Battery pack. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model provides an automatic reset inverter restart device, including a base plate 1, a fixed box 2 fixedly connected to the upper surface of the base plate 1, a motor 3 fixedly connected inside the fixed box 2, a rotating column 4 provided at the output end of the motor 3, a sleeve 5 rotatably connected to the outer wall of the rotating column 4, the outer wall of the sleeve 5 slidably connected to the inside of the fixed box 2, a sliding column 6 fixedly connected inside the sleeve 5, the bottom end of the sliding column 6 slidably connected to the outer wall of the rotating column 4, a spring 7 provided inside the sleeve 5, a sliding piece 8 fixedly connected to the outer wall of the spring 7, the outer wall of the sliding piece 8 slidably connected to the inside of the sleeve 5, a pressure plate 9 fixedly connected to the outer wall of the sleeve 5, and a starting component 10 provided on the upper surface of the base plate 1.

[0049] Specifically, the base plate 1 supports and fixes the fixed box 2, and the fixed box 2 fixes the motor 3. Starting the motor 3 drives the rotating column 4 to rotate. The outer wall of the rotating column 4 has an arc-shaped groove that circles the outer circumference, which limits the movement of the sliding column 6. As the rotating column 4 rotates, the sliding column 6 slides along the arc-shaped groove on its outer wall. Simultaneously, the upper surface of the fixed box 2 also has a sliding groove that limits the movement of the sliding column 6. As the sliding column 6 slides, the sleeve 5 slides inside the fixed box 2. The movement can compress the spring 7, which in turn rebounds to ensure stable sliding of the sleeve 5. Simultaneously, as the sleeve 5 slides, it can drive the rotating column 4 to press the sliding plate 8, thereby causing the sliding plate 8 to slide inside the sleeve 5. The sliding plate 8 is used to limit the movement of the spring 7. The sleeve 5 can drive the contact plate 9 to move, achieving a stable contact pressure effect and ensuring that the contact plate 9 rebounds immediately after contact, avoiding damage to the start switch 1002. This achieves a stable contact pressure effect and improves the reliability of the device.

[0050] Reference Figure 4 The starting assembly 10 includes a frequency converter body 1001, the lower surface of which is fixedly connected to the upper surface of the base plate 1, and a start switch 1002 is provided on the outer wall of the frequency converter body 1001.

[0051] Specifically, the base plate 1 supports the inverter body 1001. The outer wall of the inverter body 1001 is provided with a start switch 1002. The start switch 1002 is used to start the inverter body 1001. The start switch 1002 is located directly behind the touch plate 9 to ensure that the touch plate 9 can accurately press on the start switch 1002.

[0052] Reference Figure 4 and Figure 5 A current sensor 12 is provided on the outer wall of the inverter body 1001. The current sensor 12 is electrically connected to a transmission module. The transmission module is signal-connected to a signal processing module 13. The internal part of the signal processing module 13 includes a microprocessor. The output end of the signal processing module 13 is signal-connected to a wireless transmitter 14. The output end of the wireless transmitter 14 is signal-connected to a wireless receiver 11.

[0053] Specifically, a current sensor 12 is installed on the outer wall of the inverter body 1001. The current sensor 12 is used to monitor the current of the inverter body 1001. When the current sensor 12 detects a change in the current of the inverter body 1001, it converts the current signal into a standard electrical signal, which is then transmitted to the transmission module. The transmission module transmits the electrical signal to the signal processing module 13. The signal processing module 13 is equipped with a microprocessor, which can amplify, filter, and encode the electrical signal, and perform intelligent analysis on the current signal. Based on factors such as current intensity and power-on sequence, it determines whether the inverter meets the start-up conditions. When the start-up conditions are met, the module generates a start-up command and sends it to the wireless transmitter 14. The wireless transmitter 14 then transmits the start-up command to the wireless receiver 11 via a wireless signal.

[0054] Reference Figure 2 and Figure 5 The outer wall of the fixed box 2 is provided with a power supply module 15, which is electrically connected to the wireless receiver 11; the power supply module 15 is provided with a battery pack 16, which is electrically connected to the power supply module 15; the power supply module 15 is electrically connected to the starting module, and the starting module is electrically connected to the motor 3.

[0055] Specifically, a power supply module 15 is installed on the outer wall of the fixed box 2. After receiving the wireless signal through the wireless receiver 11, the wireless receiver 11 decodes the signal and controls the power supply module 15 through the built-in drive circuit. The power supply module 15 is equipped with a battery pack 16. The battery pack 16 uses high-energy-density, long-life lithium-ion batteries, which can provide a continuous and stable power supply to the device in the event of a sudden failure. The power supply module 15 can provide the necessary power support for the starting module. The starting module can supply power to the motor 3. By starting the motor 3, the touch device can be driven, thereby achieving the effect of automatic touch and automatic restart, which improves the reliability and stability of the equipment and reduces maintenance costs.

[0056] Working Principle: When the inverter restart device is needed, if the inverter body 1001 needs to be powered back on due to a sudden fault, such as a power outage or power failure, the current sensor 12 quickly detects the change in current and converts the current signal into a standard electrical signal. This electrical signal is transmitted to the transmission module, which then transmits the received electrical signal to the signal processing module 13. After receiving the electrical signal, the signal processing module 13 amplifies, filters, and encodes it to eliminate noise and interference. Simultaneously, the microprocessor within the module intelligently analyzes the current signal to determine whether the inverter meets the startup conditions. If the conditions are met, the module generates a startup command and sends it to the wireless transmission line. After receiving the start command, the wireless transmitter 14 immediately converts it into a wireless signal and transmits it to the wireless receiver 11 via wireless technology. After receiving the wireless signal, the wireless receiver 11 decodes it and controls the power supply module 15 through the built-in drive circuit. The power supply module 15 is powered by the battery pack 16, and then provides power support to the start module through the power supply module 15. The start module receives the signal to power the motor 3, thereby starting the motor 3. Then, the motor 3 drives the touch plate 9, so that the touch plate 9 accurately touches the start switch 1002 on the inverter body 1001, thereby realizing the effect of automatic reset and start of the inverter.

[0057] The starting motor 3 drives the rotating column 4 to rotate inside the fixed box 2. Simultaneously, the rotating column 4 rotates, causing the sliding column 6 to slide on the groove on the outer wall of the rotating column 4. The sliding of the sliding column 6 causes the sleeve 5 to slide inside the fixed box 2, and simultaneously, the sleeve 5 slides on the outer wall of the rotating column 4. As the sleeve 5 slides, the spring 7 is compressed, causing the sliding plate 8 to slide inside the sleeve 5, which in turn moves the pressure plate 9. When the pressure plate 9 moves, it presses the start switch 1002 on the outer wall of the inverter body 1001, thus restarting the inverter body 1001. This achieves the effect of automatically pressing the start switch 1002. This device not only enables real-time monitoring of sudden faults in the inverter body 1001 but also automatically restarts the inverter body 1001, improving the reliability and stability of the equipment and reducing maintenance costs.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic reset inverter restart device, comprising a base plate (1), characterized in that: A fixed box (2) is fixedly connected to the upper surface of the base plate (1). A motor (3) is fixedly connected inside the fixed box (2). A rotating column (4) is provided at the output end of the motor (3). A sleeve (5) is rotatably connected to the outer wall of the rotating column (4). The outer wall of the sleeve (5) is slidably connected to the inside of the fixed box (2). A sliding column (6) is fixedly connected inside the sleeve (5). The bottom end of the sliding column (6) is slidably connected to the outer wall of the rotating column (4). A spring (7) is provided inside the sleeve (5). A sliding piece (8) is fixedly connected to the outer wall of the spring (7). The outer wall of the sliding piece (8) is slidably connected to the inside of the sleeve (5). A pressure plate (9) is fixedly connected to the outer wall of the sleeve (5). A starting component (10) is provided on the upper surface of the base plate (1).

2. The automatic reset inverter restart device according to claim 1, characterized in that: The starting component (10) includes a frequency converter body (1001), the lower surface of which is fixedly connected to the upper surface of the base plate (1), and a start switch (1002) is provided on the outer wall of the frequency converter body (1001).

3. The automatic reset inverter restart device according to claim 2, characterized in that: A current sensor (12) is provided on the outer wall of the inverter body (1001), and the current sensor (12) is electrically connected to a transmission module.

4. The automatic reset inverter restart device according to claim 3, characterized in that: The transmission module is connected to a signal processing module (13), which includes a microprocessor.

5. The automatic reset inverter restart device according to claim 4, characterized in that: The output of the signal processing module (13) is connected to a wireless transmitter (14), and the output of the wireless transmitter (14) is connected to a wireless receiver (11).

6. The automatic reset inverter restart device according to claim 1, characterized in that: The outer wall of the fixed box (2) is provided with a power supply module (15), which is electrically connected to the wireless receiver (11).

7. The automatic reset inverter restart device according to claim 6, characterized in that: The power supply module (15) is equipped with a battery pack (16) inside, and the battery pack (16) is electrically connected to the power supply module (15).

8. The automatic reset inverter restart device according to claim 7, characterized in that: The power supply module (15) is electrically connected to the starting module, and the starting module is electrically connected to the motor (3).

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