Main control unit for mining continuous mining machine electric control system

Abstract

The utility model provides a main control unit for an electric control system of a mining continuous mining machine, which comprises an electric control box and a mother board, the mother board and a plurality of electric devices are arranged in the electric control box, the mother board is provided with a quick-plug wiring plug and a quick-plug terminal socket which are connected with the electric devices, and the quick-plug wiring plug and the quick-plug terminal socket are connected with the electric devices. The electric devices comprise a PLC unit, a relay unit, a sensor unit, a valve control unit, a switch unit, a voltage detection unit, a power supply unit and an angle detection unit, wiring among the units is connected through circuit board interfaces, and the electric control box is provided with various wiring ports. The main control unit is respectively connected with a contactor unit of a continuous mining machine motor needing to be controlled, different signal sensors needing to be detected and communication devices needing to be communicated through wiring ports. According to the mining continuous mining machine electric control system, the main control unit is used for controlling the whole electric part of the continuous mining machine, the control electric part is integrated, internal electric parts are connected through the circuit board, various types of ports are reserved, and different control systems only need to be connected through the circuit board on the basis of the main control unit. And the control of the whole electric control system can be realized by assembling different components.

Description

Technical Field

[0001] The utility model relates to an electric control system for a continuous miner used in underground coal mines, in particular to a main control unit for the electric control system for a continuous miner used in mines. Background Art

[0002] The traditional continuous mining machine electronic control system needs to install many electrical components in the electronic control box of the electronic control system, such as switching power supplies, intrinsically safe power supplies, PLCs, various external units, etc. These electrical components need to be adjusted according to the control systems of different types of equipment, and the installation and space in the electronic control box must also be considered. In addition, there are many wiring connections for each electrical component, and there is no convenient way to troubleshoot, which makes the electronic control box take up a lot of space. To solve such problems, the electrical components are integrated and some are adjusted, which can reduce the overall size and increase compatibility. Utility Model Content

[0003] The utility model provides a main control unit for the electric control system of a continuous mining machine for mining, which solves the problem of integrating the internal electrical components of the electric control box of the continuous mining machine. The main control unit is compatible with all the control systems of the continuous mining machine. The technical solution is as follows:

[0004] A main control unit for an electric control system of a continuous mining machine for mining comprises an electric control box and a motherboard. The electric control box is provided with a motherboard and a plurality of electric components inside. The motherboard is provided with quick-plug wiring plugs and quick-plug terminal sockets for connecting the electric components. The electric components comprise a PLC unit, a relay unit, a sensor unit, a valve control unit, a switch unit, a voltage detection unit, a power supply unit and an angle detection unit. The wiring between the units is connected by a circuit board interface. The electric control box is provided with a plurality of wiring ports. The main control unit is respectively connected to a contactor unit of a continuous mining machine motor to be controlled, different signal sensors to be detected and a communication device to be communicated through the wiring ports.

[0005] The motherboard is a circuit board that connects all unit functions together, and is equipped with a variety of wiring plugs and quick-plug terminal sockets for wiring connections between units or quick plugs between circuit boards.

[0006] The PLC unit is installed on a PLC single-board computer. The PLC unit has a communication port, a power port and a relay port. The communication port and the power port are used to connect a remote control receiver, a display screen, an MB3180 data upload module, and a sensor detection module. The relay port, that is, the switch port, is used to control an external relay and voltage detection.

[0007] The PLC unit is also connected to a UPS power failure storage unit for short-term power supply to the PLC, including a connected UPS power supply and a power failure delay relay.

[0008] The relay unit is installed on the relay board, and the relay board is connected to the motherboard by plugging; it includes a first external terminal and a second external terminal, the first external terminal is used to control the coil of the external relay and the normally open and normally closed ports of the relay, and then form a control system with other electrical components; the second external terminal is used to connect the normally open and normally closed ports of the relay, there is no relay coil port, and it is a spare port.

[0009] The sensor unit comprises a first sensor module and a second sensor module. The first sensor module is used for detecting sensor analog signals of water flow and water pressure; the second sensor module is used for detecting PT100 and PTC temperature sensors.

[0010] The valve control unit is installed on the valve control circuit board. The valve control unit is used to control the start-up of the electromagnetic valve of the equipment and is connected to the motherboard by plugging.

[0011] The angle detection unit includes a tilt sensor, which is horizontally installed inside the main controller. The tested horizontal angle and pitch angle correspond to the horizontal coordinate and vertical coordinate of the sensor respectively. The tilt sensor has four control lines, two of which are power lines and two are CAN communication lines connected to the PLC unit.

[0012] The voltage detection unit is installed on the voltage detection board, and is used to detect the 220V voltage, convert AC220V into DC0-10V, and feed back to the PLC unit.

[0013] There are also two left and right auxiliary control units, which are used to aggregate all sensors and communication modules on both sides of the equipment to the left and right auxiliary control units, and then connect them to the PLC unit; the power supply and communication interfaces of the left and right auxiliary control units are also connected to the PLC unit.

[0014] The electrical control system of the continuous mining machine for mining uses a main control unit to control the entire electrical part of the continuous mining machine, integrate the control electrical part, connect the internal electrical components with a circuit board, and reserve various types of ports. Different control systems only need to assemble different components based on this main control unit to achieve control of the entire electrical control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a main control unit for the electric control system of the mining continuous mining machine;

[0016] Figure 2 is a schematic diagram of the PLC unit;

[0017] Figure 3 is a schematic diagram of the UPS power failure storage unit;

[0018] Figure 4is a schematic diagram of the relay unit Figure 1 ;

[0019] Figure 5 is a schematic diagram of the relay unit Figure 2 ;

[0020] Figure 6 It is a 485 communication diagram of the PLC unit;

[0021] Figure 7 is a connection diagram of the tilt sensor;

[0022] Figure 8 It means that the connection between the inverter and the knob is connected to the PLC unit through X2;

[0023] Fig. 9 A schematic diagram showing two auxiliary control units on the left and right;

[0024] Fig.10 It means that the power supply and feedback lines of all contactor-related control coils of the entire device are connected to all electrical components inside the main control through X1. DETAILED DESCRIPTION

[0025] The utility model integrates the internal electrical components of the continuous mining machine electrical control box to produce a main control unit which is small in size, powerful in function, and compatible with all continuous mining machine electrical controls. The main control unit has output ports such as switching quantity, analog quantity, detection sensor, and communication to be compatible with all continuous mining machine control systems.

[0026] like Figure 1 As shown, the main control unit of the electric control system of the continuous mining machine for mining includes an electric control box and a motherboard. The electric control box is provided with a motherboard and a plurality of electrical components. The motherboard is provided with quick-plug wiring plugs and quick-plug terminal sockets for connecting the electrical components. The electrical components include a PLC unit, a relay unit, a sensor unit, a valve control unit, a switch unit, a voltage detection unit, a power supply unit and an angle detection unit. The wiring between the units is connected by a circuit board interface. The electric control box is provided with a variety of wiring ports. The main control unit is connected to the contactor unit of the continuous mining machine motor that needs to be controlled, the different signal sensors that need to be detected, and the communication devices that need to communicate through the wiring ports.

[0027] The motherboard 1 is a circuit board that connects all unit functions together, and is equipped with a variety of wiring plugs and quick-plug terminal sockets for wiring connections between units or quick plugs between circuit boards.

[0028] like Figure 2As shown, the PLC unit is installed on the PLC single board computer 2, one end of the PLC single board computer 2 is connected to the wiring port of the electric control box, and the other end is connected to the wiring plug on the motherboard 1. The PLC unit includes X8 and X9, and X8 represents the communication port and power port derived from the PLC unit, which are mainly used to connect the remote control receiver, display screen, MB3180 data upload module, and sensor detection module. X9 is mainly the relay port derived from the PLC unit, that is, the switch port, which is mainly used to control external relays and voltage detection functions. Among them, EX15EDGBVHM-3.5 represents the custom terminal name, and zhukong represents the connection to the PLC unit module.

[0029] like Figure 3 As shown, the PLC unit is also connected to a UPS power failure storage unit X7. The UPS power failure storage unit 7 is mainly used to connect to the PLC for short-term power supply. Because the amount of data processed by the PLC is relatively large, the data that needs to be stored in real time is also relatively large. The processing time when storage is required cannot be too short. When the power is cut off normally, the PLC unit loses power relatively quickly. This time cannot support the PLC unit to complete the automatic storage of data. Therefore, when the device is powered off, the PLC unit needs to be powered off after a period of time. In this way, when the device is powered on next time, the data before the device is powered off can be reliably maintained. The UPS power failure storage unit 7 mainly includes a UPS power supply and a power-off delay relay.

[0030] like Figure 4 and Figure 5 As shown, the relay unit is installed on the relay board 3, and the relay board 3 is equipped with multiple relay units, which are connected to the motherboard 1 by plugging. The relay unit includes X18 and X5, and X18 is an external terminal of the relay board, which is mainly used to control the coil of the external relay and the normally open and normally closed ports of the relay, and then form a control system with other electrical components. X5 is also an external terminal of the relay board, but unlike X18, X5 is mainly used for connecting the normally open and normally closed ports of the relay, has no relay coil port, and is mainly a spare port.

[0031] The sensor unit includes a first sensor module 4 and a second sensor module 8, and the sensor unit is connected to the motherboard 1 by plugging. The function of the first sensor module 4 is mainly used for detecting analog signals of sensors such as water flow and water pressure; the function of the second sensor module 8 is used for detecting temperature sensors such as PT100 and PTC.

[0032] The valve control unit is installed on the valve control circuit board 5. The valve control unit is used to control the start-up of the electromagnetic valve of the equipment and is connected to the motherboard by plugging.

[0033] The electric control box is provided with a fan 6 mounted on the cover plate of the electric control box for dissipating heat for each unit and providing power through the motherboard 1 .

[0034] The switch unit is installed on the switch board 7. The switch unit is used to connect external display screens, remote communication units, etc., and is connected to the motherboard by plugging. Figure 6 The 485 communication ports shown are X4, where the 485 communication ports are connected in parallel with the display screen and the MB3180 data upload module, and are powered by a 24V power supply.

[0035] The angle detection unit includes a tilt sensor 9, which is horizontally installed inside the main controller. The horizontal angle and pitch angle tested correspond to the horizontal and vertical coordinates of the sensor respectively. The sensor has four control lines, two for power supply and two for CAN communication, which are connected to the PLC unit and send the detected angle to the PLC unit via CAN communication. It is used to detect the horizontal angle and pitch angle of the controller, and provides power and communication through the motherboard. The tilt sensor 9 is as follows Figure 7 The X12 shown has four ports in total, 1 is CANH for the tilt sensor and PLC unit, 2 is CANL, 3 is sensor power supply 24V+, and 4 is sensor 24V-.

[0036] The voltage detection unit is installed on the voltage detection board 10, and is used to detect the 220V voltage, convert AC220V into DC0-10V, and feed it back to the PLC single board computer, which is connected to the motherboard and provides working voltage.

[0037] The power supply unit includes a multi-channel intrinsically safe power supply board 11 and a switching power supply board 12. The multi-channel intrinsically safe power supply board 11 is used to convert the external AC220V voltage into DC24V and DC12V to provide power for the valve-controlled circuit board 5 and the voltage detection board 10; the switching power supply board 12 is used to convert the external AC220V voltage into DC24V to provide power for the PLC single-board computer 2, the sensor unit, the inclination sensor 9, and the switch board 7.

[0038] like Figure 8 As shown, the connection between the inverter and the knob of the continuous mining machine is connected to the PLC unit through module X2. The inverter is added with a knob for convenience. The communication of the inverter and the knob on the equipment door panel (the equipment door panel is the front of the equipment electrical control box with knobs or some handles, referred to as the equipment operation door panel. Most equipment will have several knobs on the surface of the front of the electrical control box for the basic control of the entire equipment) are connected to X2. X2 3 and 4 are used for external inverter communication, and X2 5, 7, and 8 are ports for connecting the PLC unit control knob.

[0039] like Fig. 9As shown, the left and right auxiliary control units aggregate all the sensors and communication modules on both sides of the equipment to the left and right auxiliary control units respectively, and then connect to the PLC unit, and the power supply and communication interfaces of the left and right auxiliary control units are also connected to the PLC unit. This not only regularizes the connection of various sensors and other components, but also can protect the PLC unit when there is a problem with the external sensor, so that when the external sensor is short-circuited or misconnected to high voltage, it is the left and right auxiliary control units that are damaged, and the PLC unit will not be directly damaged, causing paralysis of the entire equipment.

[0040] like Fig.10 As shown, the power supply and feedback lines of all contactor-related control coils of the entire device are connected to all electrical components inside the main control through module X1. X1 represents all control wiring related to the contactor, mainly including the relay coil controlled by the PLC. After the relay is energized, one end of the normally open and normally closed points is connected to the 220V power supply, and the other end is connected to the contactor coil, and the normally open and normally closed feedback points of the contactor are connected to the main control through X1.

[0041] In the present invention, the electric control box is provided with a plurality of ports for connecting to the main control unit, and the port types include switch input and output ports, analog input and output ports, CAN communication bus ports, 485 communication ports, TCP ports, (these three ports are not in Figure 1 It is reflected in the CAN and 485 Figure 2 There are terminal definition labels in X8. The TCP network port is opened outside the main control unit, so there is no special label) multiple power ports with different voltage levels. The main control unit is connected to the contactor unit of the continuous mining machine motor that needs to be controlled, the different signal sensors that need to be detected, and the electrical components that need to communicate through the ports, thus forming a complete continuous mining machine electronic control system.

[0042] The main control unit is equivalent to integrating the main control electrical components in the currently known continuous mining machine electrical control system from the original electrical components of different brands into one electrical control box. In the future, electrical engineers will no longer need to select electrical components, but only need to select peripheral supporting equipment to realize the control of the entire continuous mining machine.

[0043] The electric control box is rectangular, with input and output terminals on three sides and port types marked. The connection ports are organized and divided into different areas, and multiple communication ports are reserved, which can be connected to other expansion units as needed. In this way, each time the continuous mining equipment is modified, the main control unit can be used as the control part, and different numbers of contactors and other controlled devices can be equipped for different equipment models to complete the equipment modification. The electric control box adopts the method of disassembling the upper cover plate, so that the components inside the main control unit can be replaced.

[0044] When renovating the electric control system of the continuous mining machine, if this main control unit is equipped, the electrical engineers among the relevant staff no longer need to select electrical parts such as PLC and power supply unit. In other words, the logic control part no longer needs to be considered. It is only necessary to select peripheral equipment such as contactors, oil temperature and oil pressure sensors, etc., which saves costs. It also greatly reduces the space layout pressure of structural engineers. Because the internal space of the electric control box is limited, if ordinary electrical components are used, not only will the wiring be messy, but the internal space will also be under pressure. Reasonable layout and reasonable routing are required. When a fault occurs, it is necessary to troubleshoot and replace the corresponding electrical components. With this main control unit, once a control fault occurs, the terminal block fixing screws on the three sides of the main control unit can be directly removed, and the main control unit can be replaced, which is convenient and fast.

Claims

1. A main control unit for an electric control system of a continuous mining machine, characterized in that: It comprises an electric control box and a motherboard. The electric control box is provided with a motherboard and a plurality of electrical components inside. The motherboard is provided with quick-insertion wiring plugs and quick-insertion terminal sockets for connecting the electrical components. The electrical components comprise a PLC unit, a relay unit, a sensor unit, a valve control unit, a switch unit, a voltage detection unit, a power supply unit and an angle detection unit. The wiring between the units is connected by a circuit board interface. The electric control box is provided with a plurality of wiring ports. The main control unit is respectively connected to the contactor unit of the continuous mining machine motor to be controlled, the different signal sensors to be detected and the communication components to be communicated through the wiring ports.

2. The main control unit for the electric control system of a continuous mining machine according to claim 1, characterized in that: The motherboard is a circuit board that connects all unit functions together, and is equipped with a variety of wiring plugs and quick-plug terminal sockets for wiring connections between units or quick plugs between circuit boards.

3. The main control unit for the electric control system of a continuous mining machine according to claim 1, characterized in that: The PLC unit is installed on a PLC single-board computer. The PLC unit has a communication port, a power port and a relay port. The communication port and the power port are used to connect a remote control receiver, a display screen, an MB3180 data upload module, and a sensor detection module. The relay port, that is, the switch port, is used to control an external relay and voltage detection.

4. The main control unit for the electric control system of a continuous mining machine according to claim 1, characterized in that: The PLC unit is also connected to a UPS power failure storage unit for short-term power supply to the PLC, including a connected UPS power supply and a power failure delay relay.

5. The main control unit for the electric control system of a continuous mining machine according to claim 1, characterized in that: The relay unit is installed on the relay board, and the relay board is connected to the motherboard by plugging; it includes a first external terminal and a second external terminal, the first external terminal is used to control the coil of the external relay and the normally open and normally closed ports of the relay, and then form a control system with other electrical components; the second external terminal is used to connect the normally open and normally closed ports of the relay, there is no relay coil port, and it is a spare port.

6. The main control unit for the electric control system of a continuous mining machine according to claim 1, characterized in that: The sensor unit comprises a first sensor module and a second sensor module. The first sensor module is used for detecting sensor analog signals of water flow and water pressure; the second sensor module is used for detecting PT100 and PTC temperature sensors.

7. The main control unit for the electric control system of a continuous mining machine according to claim 1, characterized in that: The valve control unit is installed on the valve control circuit board. The valve control unit is used to control the start-up of the electromagnetic valve of the equipment and is connected to the motherboard by plugging.

8. The main control unit for the electric control system of a continuous mining machine according to claim 1, characterized in that: The angle detection unit includes a tilt sensor, which is horizontally installed inside the main controller. The tested horizontal angle and pitch angle correspond to the horizontal coordinate and vertical coordinate of the sensor respectively. The tilt sensor has four control lines, two of which are power lines and two are CAN communication lines connected to the PLC unit.

9. The main control unit for the electric control system of a continuous mining machine according to claim 1, characterized in that: The voltage detection unit is installed on the voltage detection board, and is used to detect the 220V voltage, convert AC220V into DC0-10V, and feed back to the PLC unit.

10. The main control unit for the electric control system of a continuous mining machine according to claim 1, characterized in that: There are also two left and right auxiliary control units, which are used to aggregate all sensors and communication modules on both sides of the equipment to the left and right auxiliary control units, and then connect them to the PLC unit; the power supply and communication interfaces of the left and right auxiliary control units are also connected to the PLC unit.

Images