CN203084495U - Comprehensive control box for tunneling machines - Google Patents

Abstract

A comprehensive control box for a roadheader, including a box body, wherein: including a PLC processor, a port expansion device, an analog-to-digital conversion device, a signal level conversion device, a display and a relay board; the data input and output ports of the PLC processor, the analog The data output port of the digital conversion device and the signal output port of the signal level conversion device are connected to the corresponding signal ports of the port expansion device, and the port expansion device is connected to the display and the relay board through corresponding serial ports. The comprehensive control box for the roadheader of the utility model integrates control, protection and communication, has small volume, good anti-vibration and anti-interference performance, high reliability, and is suitable for long-term harsh working environments. During the entire control process, the working condition of the roadheader can be displayed on the display of the control box in time, and the running state of the roadheader is intuitive.

Description

Comprehensive control box for roadheader

technical field

The utility model relates to a control device, in particular to a control device for a roadheader motor.

Background technique

Roadheaders work in environments with high temperature, high humidity, high dust, high gas, high electromagnetic interference and vibration. The working environment is harsh and prone to potential failures. Once they cannot be detected and eliminated in time, equipment damage and production failures will result. Therefore, it is necessary to start, stop, and control the forward and reverse rotation of each working motor of the equipment according to the working state of the motor, and in the event of a fault, carry out necessary protection for each motor and control circuit, start the corresponding execution circuit, and need to be able to display each in real time. The working state and fault state of the motor and control circuit. Existing control equipment cannot display the operating status of the whole machine in real time, and can only display fault information in Chinese display mode, without fault memory function, chart, and digital display function.

Utility model content

The purpose of the utility model is to provide a comprehensive control box for a roadheader, which solves the technical problem that the motor working state and motor failure protection of the roadheader cannot be centrally monitored.

The comprehensive control box for the boring machine of the utility model includes a box body, wherein: including a PLC processor, a port expansion device, an analog-to-digital conversion device, a signal level conversion device, a display and a relay board;

The data input and output ports of the PLC processor, the data output ports of the analog-to-digital conversion device, and the signal output ports of the signal level conversion device are connected to the corresponding signal ports of the port expansion device, and the port expansion device is connected to the display and the relay board through corresponding serial connections. Line port for connection.

The input port of the analog-to-digital conversion device is connected to the weak current signal terminal provided on the box body, and the current and voltage transmitters installed on the phase lines of the oil pump motor are connected through the weak current signal terminal. Current and voltage transmitters for each phase line of the shipping motor, current and voltage transmitters for each phase line of the fan, current and voltage transmitters for the output line of the power supply, and insulation relays , Power failure relay, thermal relay.

The input port of the signal level conversion device is connected to the strong electric signal terminal provided on the box, and the output line of the oil pump motor overheat signal detection circuit and the output line of the cutting motor overheat signal detection circuit are connected through the strong electric signal terminal , The output line of the leakage signal detection circuit of the oil pump motor, the output line of the high-speed leakage signal detection circuit of the cutting motor, the output line of the low-speed leakage signal detection circuit of the cutting motor, the output line of the leakage signal detection circuit of the shipping motor and the output of the fan leakage signal detection circuit line.

The PLC processor is connected to the control input ends of the blocking circuits in each control loop through the corresponding signal ports on the port expansion device and the connecting terminals on the box body.

The serial communication port on the relay board is connected to the corresponding serial communication port on the port expansion device, and the signal output terminal of the relay is connected to the execution circuit of subsequent corresponding equipment through the terminal on the box body.

The integrated control box for the roadheader of the utility model can centrally collect the comprehensive working condition signals of the roadheader, and use the port expansion device to aggregate and transmit them to the PLC processor for centralized processing, and according to the built-in control program and monitoring condition parameters of the PLC processor, Generate control signals for precise control of various parts of the roadheader, and directly output to the controlled equipment through the port expansion device, or directly output to the relay to control the corresponding execution circuit through the port expansion device. During the entire control process, the working condition of the roadheader can be displayed on the display of the control box in time, and the running state of the roadheader is intuitive.

The comprehensive control box for the roadheader of the utility model integrates control, protection and communication, has small volume, good anti-vibration and anti-interference performance, high reliability, and is suitable for long-term harsh working environments. It can display the running status of the whole machine in the form of charts, numbers and Chinese characters in real time. When the system fails, it can immediately display the corresponding fault screen, and has a fault memory function to facilitate the operator and maintenance personnel to troubleshoot. Compared with the previous control The device is more advanced and practical.

Embodiments of the utility model will be further described below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a structural schematic diagram of a comprehensive control box for a roadheader of the present invention.

Detailed ways

As shown in Figure 1, the integrated control box for the roadheader of the present embodiment includes a box body, a PLC processor 01, a port expansion device 02, an analog-to-digital conversion device 03, a signal level conversion device 04, a display 05 and a relay board 06;

The PLC processor 01 receives the working status signal of each component equipment and the alarm signal of the control loop when the roadheader is running, generates the control signal for the corresponding control loop of the roadheader according to the input signal, and transmits the working condition information of the roadheader to the display at the same time ;

The port expansion device 02 provides several analog signal ports and digital signal ports, and completes the exchange of input and output signals between each port, and is used for the PLC processor 01 and the analog-to-digital conversion device 03, the signal level conversion device 04, the display 05, and the relay Signal connection between board 06 and the controlled circuit;

The analog-to-digital conversion device 03 converts the weak analog signal output by the sensor into a digital signal and outputs it to the PLC processor 01;

The signal level conversion device 04 converts the voltage amplitude of the strong electric signal generated by the control loop alarm to form a weak electric signal and outputs it to the PLC processor 01;

The display 05 receives the status signal transmitted by the PLC processor 01 for display;

The relay board 06 includes several relays, receives the control signal transmitted by the PLC processor 01 through the serial port, and completes the state switching of the corresponding relays;

The data input and output port of the PLC processor 01, the data output port of the analog-to-digital conversion device 03 and the signal output port of the signal level conversion device 04 are connected to the corresponding signal ports of the port expansion device 02, and the port expansion device 02 is connected to the display 05 and the relay Serial data transmission between boards 06 through corresponding RS232 ports.

The input port of the analog-to-digital conversion device 03 is connected to the weak current signal terminal provided on the box body, and the current and voltage transmitters installed on the phase lines of the oil pump motor 11 are connected through the weak current signal terminal. Current and voltage transmitters, current and voltage transmitters on each phase line of the shipping motor 13, current and voltage transmitters on each phase line of the fan 14, current and voltage transmitters on the output line of the 36V power supply 15, And the output circuit of the relay or sensor connected to the monitoring 36V power supply working state, including the insulation signal of the insulation relay 16, the power failure signal of the power failure relay 17, the oil temperature overrun signal of the thermal relay 18, the emergency stop signal and other switch signals.

The input port of the signal level conversion device 04 is connected to the strong electric signal terminal provided on the box body, through which the strong electric signal terminal is connected to the output line of the oil pump motor overheat signal detection circuit 21, the output line of the cutting motor overheat signal detection circuit 22, The output line of the oil pump motor leakage signal detection circuit 23, the output line of the cutting motor high-speed leakage signal detection circuit 24, the output line of the cutting motor low-speed leakage signal detection circuit 25, the output line of the shipping motor leakage signal detection circuit 26 and the fan leakage signal detection output line of circuit 27.

The serial communication port on the relay board 06 is connected to the corresponding serial communication port on the port expansion device 02, and the signal output end of the relay is connected to the execution circuit 08 of the subsequent corresponding equipment through the wiring terminal on the box body.

The PLC processor 01 can also connect the control input ends of the blocking circuits 07 in each control loop through the corresponding signal ports on the port expansion device 02 and the connecting terminals on the box body.

The PLC processor 01 is also connected with the RS232 port of the display 05 on the box body through the RS232 port on the port expansion device 02 .

In this embodiment, the PLC processor 01 adopts the Japanese Panasonic FPG-C32 type CPU module, and the port expansion device 02 adopts the FP0-E8X type expansion module. The two have good compatibility and can expand various types of low-to-medium rate analog signals Ports and data ports can expand the output contact capacity of the CPU module. The analog-to-digital conversion device 03 adopts the Japanese Panasonic FP0-A08 conversion module, the signal level conversion device 04 adopts the 74HC series multi-channel converter, and the relay board 06 adopts a serial port control multi-channel relay board.

This embodiment monitors the undervoltage, overvoltage, overheating, overload, overcurrent of each motor, the leakage protection circuit of the motor and its cable, and the blocking circuit, forms a control signal to complete the corresponding protection action, and has low-voltage leakage, oil temperature Extended protection functions such as overrun and gas monitoring.

The above-mentioned embodiments are only described to the preferred implementation of the utility model, and are not limited to the scope of the utility model. Various modifications and improvements made should fall within the scope of protection determined by the claims of the utility model.

Claims (5)

1. development machine Comprehensive Control case, comprise casing, it is characterized in that: comprise PLC processor (01), port expansion device (02), analog-digital commutator (03), signal level conversion equipment (04), display (05) and relay board (06);

The signal output port of the data-out port of the data input/output port of PLC processor (01), analog-digital commutator (03) and signal level conversion equipment (04) is connected with the corresponding signal port of port expansion device (02), and port expansion device (02) is connected by corresponding serial port between (06) with display (05), relay board.

2. development machine Comprehensive Control case according to claim 1, it is characterized in that: the input port of described analog-digital commutator (03) connects the weak electric signal connection terminal that is provided with on the described casing, be mounted on electric current on each phase circuit of Oil pump electrical machinery (11) by the weak electric signal connection terminal, voltage transmitter, electric current on each phase circuit of cutting motor (12), voltage transmitter, electric current on each phase circuit of shipment motor (13), voltage transmitter, electric current on each phase circuit of blower fan (14), voltage transmitter, electric current on power supply (15) outlet line, voltage transmitter, and insulation relay (16), dead electricity relay (17), electrothermal relay (18).

3. development machine Comprehensive Control case according to claim 2, it is characterized in that: the input port of described signal level conversion equipment (04) connects forceful electric power signal terminal that is provided with on the described casing, connects the outlet line of Oil pump electrical machinery heat alarm testing circuit (21) by forceful electric power signal terminal, the outlet line of cutting motor heat alarm testing circuit (22), the outlet line of Oil pump electrical machinery leakaging signal detecting circuit (23), the outlet line of cutting motor high speed leakaging signal detecting circuit (24), the outlet line of cutting motor low speed leakaging signal detecting circuit (25), the outlet line of shipment motor leakaging signal detecting circuit (26) and the outlet line of blower fan leakaging signal detecting circuit (27).

4. development machine Comprehensive Control case according to claim 3, it is characterized in that: described PLC processor (01) is gone up corresponding signal port by port expansion device (02), by connecting the control input end that connection terminal on the described casing connects exclusive circuit in each control loop (07).

5. development machine Comprehensive Control case according to claim 4, it is characterized in that: the communication port connectivity port expanding unit (02) on the described relay board (06) is gone up corresponding communication port, and the signal output part of relay connects the executive circuit (08) of follow-up relevant device by the connection terminal on the described casing.

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