Built-in vibrator control system of low-voltage electronic variable frequency motor

Abstract

A built-in vibrator control system of a low-voltage electronic variable frequency motor belongs to the technical field of engineering machinery. According to the technical scheme, the control system is composed of four vibrators with built-in motors, a machine frame, a frequency conversion control cabinet, a grounding wire and a low-voltage electronic frequency converter. A cable of the vibrator with the built-in motor is inserted into the frequency conversion control cabinet through an industrial plug and is tightly and reliably fixed with the rack; a system circuit is composed of an air switch, a voltmeter, an ampere meter, a frequency meter, an indicating lamp, a thermal relay, an intermediate relay, a cooling fan, a low-voltage electronic frequency converter and a matched remote control device. A circuit of the frequency conversion control cabinet is divided into a manual unit and a remote control unit which can be switched to start, operate and reset. The system has the advantages of overcoming the defects of an existing system, guaranteeing vibration compaction quality, achieving mechanization and intellectualization of concrete compaction construction, and being high in operation efficiency, good in compaction effect, novel in design, reasonable in structure, comfortable to operate, easy and convenient to maintain, safe and reliable.

Description

Technical Field

[0001] A low-voltage electronic frequency converter motor built-in vibrator control system belongs to the field of engineering machinery technology. Background Technology

[0002] With the sustained and rapid development of my country's national economy, construction, railway, highway, and water conservancy projects increasingly require the installation of concrete vibrators on equipment such as slipform machines, pavers, hoisting equipment, and robotic arms for concrete compaction to ensure the density of concrete and the quality of concrete structures. Currently, various types of concrete vibrators are used, including plate vibrators, planetary insert vibrators, and high-frequency pneumatic external vibrators. Plate vibrators are only used for shallow compaction of concrete; for thick concrete structures, they cannot compact the bottom layer. Planetary insert vibrators have the drawback of requiring manual operation by striking them upon startup. High-frequency pneumatic external vibrators require an air compressor and suffer from the same drawbacks as plate vibrators. Previously, some manufacturers produced handheld low-voltage motor-embedded vibrators for the construction industry, but due to the use of mechanical frequency converters, they are large, heavy, inconvenient to use, and require high labor intensity for workers; therefore, they are now rarely used. As a professional manufacturer of vibratory machinery for engineering applications, our company has innovatively developed a dedicated atmospheric pressure high-frequency motor-embedded concrete vibrator suitable for installation on slipform machines, pavers, hoisting equipment, robotic arms, and other equipment. In December 2024, we simultaneously applied for invention patents and utility model patents, with patent application numbers 202411832776.X and 202423073536.4, respectively. After the dedicated atmospheric pressure high-frequency motor-embedded concrete vibrator was put into use on construction sites, it was found to pose safety hazards under damp working conditions, necessitating improvements. Therefore, we have innovatively developed a motor-embedded vibrator control system using a safe voltage to meet the urgent needs of the construction, railway, highway, and hydraulic engineering fields. Summary of the Invention

[0003] The purpose of this utility model is to innovatively develop a low-voltage electronic frequency conversion motor built-in vibrator control system to meet the urgent needs of the construction, railway, highway, and hydraulic engineering fields.

[0004] The technical solution of this utility model is as follows: The control system consists of four motor-embedded vibrators, a frame, a frequency converter control cabinet, a grounding wire, and a low-voltage electronic frequency converter; the cables of the motor-embedded vibrators are plugged into the frequency converter control cabinet through industrial plugs and are securely fixed to the frame; the system circuit consists of an air switch, a voltmeter, an ammeter, a frequency meter, indicator lights, a thermal relay, an intermediate relay, a cooling fan, a low-voltage electronic frequency converter, and a matching remote control device; the frequency converter control cabinet circuit is divided into a manual unit and a remote control unit, both of which can be switched to start, run, and reset.

[0005] Furthermore, the operation panel and display screen of the low-voltage electronic frequency converter are both located on the keyboard controller. The operation panel is divided into three parts: data display area, status indication area, and keyboard operation area. The stop / reset key on the operation panel has stop, fault, and reset functions. When setting parameters, function code ranges and zones can be switched. LEDs display the operating frequency, flashing target frequency, function code, parameter value, or fault code. Four LEDs indicate the working status. The power circuit and control circuit are wired separately. Shielded wires are used for the control lines. The frequency converter and motor are grounded separately. The wiring has sufficient current carrying capacity. Voltage or current is input as analog quantities. Multiple control terminals are provided, and DIP switches select the analog input range.

[0006] The beneficial effects of this utility model are: it effectively overcomes the drawbacks of existing dedicated atmospheric pressure high-frequency motor-mounted concrete vibrators with inherent safety hazards, is suitable for the high-frequency vibration requirements of concrete vibration compaction, meets the urgent requirements of construction, railway, highway, hydraulic engineering and other fields, penetrates deep into the concrete structure after vibration starts to ensure the quality of vibration compaction, realizes the mechanization and intelligentization of concrete vibration compaction, reduces the labor intensity of workers, has high work efficiency, good compaction effect, novel design, reasonable structure, comfortable operation, simple maintenance, and safety and reliability. Attached Figure Description

[0007] Figure 1 This is a system composition diagram of this utility model.

[0008] Figure 2 This is the system circuit diagram of this utility model.

[0009] Figure 3 yes Figure 1 Circuit diagram of medium frequency converter control cabinet 3. Detailed Implementation

[0010] The details and working process of this utility model are described in detail with reference to the accompanying drawings. The control system consists of four motor-integrated vibrators 1, a frame 2, a frequency converter control cabinet 3, a grounding wire 4, and a low-voltage electronic frequency converter 5. The cables of the motor-integrated vibrators 1 are plugged into the frequency converter control cabinet 3 through industrial plugs and are securely fixed to the frame 2. The system circuit consists of air switches QF0~QF4, 0~380V voltmeters, 0~200A ammeters, 0~200Hz frequency meters, indicator lights, thermal relays FR1~FR4, 24F intermediate relays KA1~KA2, cooling fans, low-voltage electronic frequency converter 5, and a matching remote control device. The circuit of the frequency converter control cabinet 3 is divided into a manual unit and a remote control unit, both of which can be switched to start, run, and reset.

[0011] Furthermore, the operation panel and display screen of the low-voltage electronic frequency converter 5 are both located on the keyboard controller. The operation panel is divided into three parts: data display area, status indication area, and keyboard operation area. The stop / reset key on the operation panel has stop, fault, and reset functions. When setting parameters, it is also possible to switch between function code ranges and zones. LEDs display the operating frequency, flashing target frequency, function code, parameter value, or fault code. Four light-emitting diodes indicate the working status. The power circuit and control circuit are wired separately. The control line uses shielded wire. The wiring has sufficient current carrying capacity. Voltage or current is input as analog quantity. Multiple control terminals are provided. DIP switches select the analog input range.

[0012] After the concrete pouring operation is completed at the construction site, turn on the power supply and connect the cable of the motor-embedded vibrator 1 to the frequency converter control cabinet 3 through the industrial plug, ensuring correct connection. Fix the motor-embedded vibrator 1 to the frame 2, ensuring a tight and reliable fixation and reliable grounding of the grounding wire 4. Turn on the power switch of the frequency converter control cabinet 3 to connect the power supply. For manual control, press the start button on the frequency converter control cabinet 3. The frequency converter control system will start working, and the vibrator will begin vibrating, penetrating deep into the concrete structure to compact the concrete, creating a disturbance force on the concrete structure. This overcomes the frictional resistance between the concrete mixtures, causing them to flow, move relative to each other, and rearrange, expelling air from the concrete mixture and making the concrete structure dense. After the required compaction is achieved, press the stop button on the frequency converter control cabinet 3 to stop the vibrator. For remote control, press the start button on the remote control, and press the stop button on the remote control after the required compaction is achieved. During the compaction process, if a vibrator malfunctions, the corresponding fault indicator light will illuminate, and the power supply to that vibrator will be automatically disconnected. The vibration frequency can be manually fine-tuned using the fine-tuning knob on the panel of the low-voltage electronic frequency converter 5. After operation, disconnect the power switch inside the frequency converter control cabinet 3. The technical parameters of the low-voltage electronic frequency converter 5 have been tested and configured according to the order requirements at the factory, and it has protection functions such as input phase loss, input undervoltage, DC overvoltage, overcurrent, overload, current stall, overheating, and external interference. The input and output wiring of the low-voltage electronic frequency converter 5 should be checked regularly, and the terminal screws should be checked to ensure they are tight.

[0013] The beneficial effects of this utility model are: it effectively overcomes the drawbacks of existing dedicated atmospheric pressure high-frequency motor-mounted concrete vibrators with inherent safety hazards, is suitable for the high-frequency vibration requirements of concrete vibration compaction, meets the urgent requirements of construction, railway, highway, hydraulic engineering and other fields, penetrates deep into the concrete structure after vibration starts to ensure the quality of vibration compaction, realizes the mechanization and intelligentization of concrete vibration compaction, reduces the labor intensity of workers, has high work efficiency, good compaction effect, novel design, reasonable structure, comfortable operation, simple maintenance, and safety and reliability.

Claims

1. A low voltage electronic variable frequency motor built-in vibrator control system, characterized by: The control system is composed of four motor built-in vibrator (1), frame (2), frequency conversion control cabinet (3), grounding wire (4) and low-voltage electronic frequency converter (5); the cable of the motor built-in vibrator (1) is connected to the frequency conversion control cabinet (3) through industrial plug and is fixed to the frame (2) closely and reliably; the system circuit is composed of air switch (QF0~QF4), 0~380V voltmeter, 0~200A ammeter, 0~200Hz frequency meter, indicating lamp, thermal relay (FR1~FR4), 24V intermediate relay (KA1~KA2), heat dissipation fan, low-voltage electronic frequency converter 5 and matched remote control device; the circuit of the frequency conversion control cabinet 3 is divided into manual unit and remote control unit, and both can switch starting, running and resetting.

2. A low voltage electronic variable frequency motor built-in vibrator control system according to claim 1, characterized in that: The operation panel and display screen of the low-voltage electronic frequency converter (5) are arranged on the keyboard controller, and the operation panel is divided into data display area, state indication area and keyboard operation area; the stop / reset key on the operation panel has functions of stopping and resetting, and when parameters are set, the function code area and the area can be switched, the LED displays running frequency, target frequency, function code, parameter value or fault code, and four light emitting diodes indicate working state; the power circuit and the control circuit are wired separately, the control line is shielded, the wiring has sufficient current carrying capacity, the voltage or current is input in analog quantity, multiple control terminals are arranged, and the dial switch selects the analog quantity input range.

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