CN110950096A

CN110950096A - Low-voltage electrical system of cantilever bucket-wheel stacker reclaimer

Info

Publication number: CN110950096A
Application number: CN201911332969.8A
Authority: CN
Inventors: 祝明; 叶高军; 林宁; 陈蔡辉; 赵晓云; 陈兵; 梁志荣; 杜洪宇; 张慧辉
Original assignee: Nantong Power Plant of Huaneng Power International Inc
Current assignee: Nantong Power Plant of Huaneng Power International Inc
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-04-03
Anticipated expiration: 2039-12-23
Also published as: CN110950096B

Abstract

The invention discloses a low-voltage electrical system of a cantilever bucket-wheel stacker reclaimer, which comprises an electrical control cabinet, wherein the electrical control cabinet comprises a power distribution and lighting cabinet, a walking-tail car cabinet, a bucket-wheel-cantilever belt cabinet, a gyration-pitching cabinet, a PLC (programmable logic controller) main station and a power distribution cabinet thereof, a remote station and a relay cabinet; the protection grade of each cabinet body is not lower than IP54, and the door plant is 2~3 millimeters thick, is furnished with the fixed mounting steel base that 100~150 millimeters are high. The invention effectively ensures the safe and stable operation and maintenance of the equipment and is convenient to operate.

Description

Low-voltage electrical system of cantilever bucket-wheel stacker reclaimer

Technical Field

The invention relates to a low-voltage electrical system of a cantilever bucket-wheel stacker-reclaimer.

Background

The low-voltage electrical system of the cantilever bucket-wheel stacker reclaimer generally has the problem that the electrical control can not maintain safe operation; for example, the south china power plants in Huaneng, model Nos. 1 and 2, the bucket wheel machine, STARE1500/1200, manufactured by ITALIMPIANTI, Italy. Due to the fact that the time is long, electrical control equipment and main components are aged, and replacement of spare parts is difficult, safe and stable operation and maintenance of the equipment are gradually influenced.

Disclosure of Invention

The invention aims to provide a low-voltage electrical system of a cantilever bucket-wheel stacker-reclaimer, which realizes safe and stable operation.

The technical solution of the invention is as follows:

the utility model provides a cantilever bucket-wheel stacker reclaimer low pressure electrical system, includes the electrical control cabinet, characterized by: the electrical control cabinet comprises a power distribution and lighting cabinet, a walking-tail car cabinet, a bucket wheel-cantilever belt cabinet, a gyration-pitching cabinet, a PLC main station and a power distribution cabinet thereof, a remote station and a relay cabinet; the protection grade of each cabinet body is not lower than IP54, the thickness of the door plate is 2-3 mm, and a fixed installation steel base with the height of 100-150 mm is matched;

the PLC device of the PLC master station and the PLC control system in the power distribution cabinet are frame-type, and each functional module is made into a plug-in board type; more than 15% allowance is reserved for the I/O points and the slot positions of the card of the PLC, but not less than 692I/O points are reserved; the system memory has at least more than 40% allowance; effective anti-interference isolation measures are taken for input and output signals of the PLC, and an intermediate relay is adopted for isolating signal sources input and output to field components so as to protect the PLC module; the control system is independent of a grounding system and is separated from a strong electric system; the power line, the I/O line and the communication network line and wire groove are laid separately and independently;

the power distribution and lighting cabinet comprises a power loop, a public load and a lighting power distribution part, and is connected with the next-stage circuit breakers through the three-phase copper bar bus of the upper small chamber; the inlet and outlet wires of the circuit breaker and the contactor of 30A or above are connected by copper bars; a power supply voltmeter, a current meter and a bus anti-surge protection device (Imax is 100kA)1 group are arranged; the power loop is provided with a 400V power supply main circuit breaker (setting value 630A) and a 400V public load power supply main circuit breaker (setting value 200A); the lighting power distribution comprises 1 400V/220V 40kVA three-phase power isolation transformer, 1 lighting main power circuit breaker and no less than 10 branches of lighting power circuit breakers; a protective isolation insulating plate is additionally arranged at the wiring terminal and the periphery of the illumination isolation transformer;

in the walking-tail car cabinet, a cart walking motor is driven by a frequency converter ABB, ACS880 series and 75kW, and the cart has an emergency bypass function; the trailer belt adopts soft start control, and has an emergency bypass function; related devices are matched and matched according to the technical requirements of products under the control of PLC network communication instructions; other load motors are controlled by directly starting/stopping the contactors, and are matched with corresponding protection devices according to standard regulations;

in the bucket wheel-cantilever belt cabinet, the cantilever belt conveyor adopts soft start control and has an emergency bypass function;

in the rotary-bowel-bending cabinet, a cantilever rotary motor is driven by a frequency converter (ABB, ACS880 series, 37kW), and has an emergency bypass function;

the control system comprises a main system control system, a cantilever belt control system, a bucket wheel-wheel groove-cab balance control system, a cart control system, a movable shovel control system, a cantilever pitching control system, a trailer belt control system, a trailer rear trailer control system and a cantilever rotation control system;

the control method comprises the following steps:

the main system control comprises the following steps:

(1) powering up the PLC;

(2) the PLC scans whether the total air switch feedback signal is switched on or not in a circulating manner and whether the power phase sequence is correct or not; if the condition is satisfied, executing the next step; if not, scanning the signal, and waiting for the feedback signal to be satisfied;

(3) circularly scanning the emergency stop button signal, if the emergency stop signal has feedback, continuing to execute the program downwards, and if the emergency stop signal does not have feedback, circularly scanning the program in the program section, and not executing the next step;

(4) circularly scanning whether the power supply is switched on or not, if the power supply is switched on, executing the next step, if the power supply is not switched on, returning to the previous condition;

(5) circularly scanning and controlling a power supply feedback signal, if the signal feedback exists, continuing to execute downwards, if the signal feedback does not exist, returning to the previous condition;

the above conditions are met, and the system operation is allowed;

the cantilever belt control comprises cantilever belt stacking control and cantilever belt material taking control; the cantilever belt windrow control comprises the following steps:

(1) circularly scanning a feedback signal of the cantilever belt power air-switch power supply, executing a program downwards when the feedback signal is detected, and waiting to execute the program when the feedback signal cannot be detected;

(2) circularly scanning a power supply feedback signal of the cantilever belt contactor, executing a program downwards when the feedback signal is detected, and returning the program to the previous stage when the feedback signal cannot be detected;

(3) circularly scanning a feedback signal of the cantilever belt frequency converter, executing a program downwards when the feedback signal is detected, and returning the program to the previous stage when the feedback signal cannot be detected;

(4) after cyclic scanning, tail car stacking limit feedback signals, movable shovel stacking limit feedback signals and bucket wheel groove stacking limit feedback signals are detected, the program is executed downwards, if one of the 4 signals is not detected, the program returns to the previous stage;

(5) circularly scanning a cantilever belt deviation switch signal, an under-speed switch signal and a blocking switch signal, detecting 3 signals, executing a program downwards, and returning the program to the previous stage if one signal is not detected;

(6) circularly scanning whether the cantilever belt sends a starting command or not, detecting the starting command, starting the cantilever belt, and returning the program to the previous stage if the starting command is not detected;

after the conditions are met, the cantilever belt starts to stack;

the cantilever belt material taking control comprises the following steps:

(4) after cyclic scanning, a tail vehicle material taking limit feedback signal, a movable shovel material taking limit feedback signal and a bucket wheel groove material taking limit feedback signal are detected, 4 signals are detected, a program is executed downwards, one of the 4 signals is not detected, and the program returns to the previous stage;

the above conditions all meet the operation conditions, and the cantilever belt starts to take materials for operation;

the bucket wheel-wheel groove-cab balance control comprises bucket wheel groove control and cab balance control; wherein the bucket-wheel groove control comprises bucket-wheel groove material taking control and bucket-wheel groove stacking control; the bucket wheel groove material taking control comprises the following steps:

(1) circularly scanning a power idle opening feedback signal of a bucket wheel groove, if the signal is fed back, executing the next procedure, if the signal is not fed back, stopping the procedure, and waiting for the feedback signal;

(2) circularly scanning a bucket-wheel groove material taking limiting signal, wherein the bucket-wheel groove material taking limiting signal has feedback, which indicates that the bucket-wheel groove is in a material taking position, and a program does not need to continuously execute a bucket-wheel groove material taking action; the material taking limit signal of the bucket wheel groove is not fed back, and the program is executed downwards;

(3) circularly scanning a material taking starting signal, if a starting signal command is sent, executing the program downwards, and if no starting signal command is sent, returning the program to the previous one;

(4) circularly scanning a feed-back signal of the bucket wheel groove oil pump contactor, detecting the feed-back signal, and continuously executing a program downwards; the program returns to the upper level without a feedback signal;

(5) circularly scanning a material taking limit signal of the bucket-wheel groove, and detecting a feedback signal to indicate that the bucket-wheel groove works in place; if no feedback signal is detected, the program returns to continue to execute the operation of the motor of the movable oil shoveling pump until a material taking signal of the bucket wheel groove is detected;

the bucket wheel groove stacking control comprises the following steps:

(2) circularly scanning the bucket-wheel groove stacking limit signal, and feeding back the bucket-wheel groove stacking limit signal to indicate that the bucket-wheel groove is in the stacking position, so that the program does not need to continuously execute the bucket-wheel groove stacking action; the bucket wheel groove stacking limit signal is not fed back, and the program is executed downwards;

(3) circularly scanning a stacking starting signal, if a starting signal command is sent, executing the program downwards, and if the starting signal command is not sent, returning the program to the previous one;

(5) circularly scanning the bucket-wheel groove stacking limit signal, and detecting a feedback signal to indicate that the bucket-wheel groove works in place; if no feedback signal is detected, the program returns to continue to execute the operation of the bucket-wheel groove oil pump motor until a bucket-wheel groove stacking signal is detected;

the cab balance control comprises a first cab balance control and a second cab balance control; wherein the first cab balance control comprises the steps of:

(1) circularly scanning a balanced power air switch feedback signal of the cab, if the signal is fed back, executing the next procedure, if the signal is not fed back, stopping the procedure, and waiting for the feedback signal;

(2) the inclination 1 limiting signal of the cab is scanned circularly, the inclination 1 limiting signal of the cab is fed back, the cab is in a balanced state, and a program does not need to continuously perform balance adjustment of the cab; the cab inclination 1 limiting signal is not fed back, and the program is executed downwards;

(3) circularly scanning a cab balance starting signal, if a starting signal command is sent, executing the program downwards, and if the starting signal command is not sent, returning the program to the previous program;

(4) circularly scanning a feedback signal of a cab balanced oil pump contactor, detecting the feedback signal, and continuing to execute a program downwards; the program returns to the upper level without a feedback signal;

(5) circularly scanning the inclination 1 limit signal of the cab, and detecting a feedback signal to indicate that the inclination 1 limit of the cab is in place; if no feedback signal is detected, the program returns, and the operation of the cab balance oil pump motor is continuously executed until a cab inclination 1 limit action signal is detected;

wherein the second cab balance control comprises the steps of:

(2) the inclination 2 limiting signal of the cab is scanned circularly, the inclination 2 limiting signal of the cab is fed back, the cab is in a balanced state, and the program does not need to continuously execute the balance adjustment of the cab; the cab inclination 2 limiting signal is not fed back, and the program is executed downwards;

(5) circularly scanning the cab inclination 2 limiting signal, and detecting a feedback signal to indicate that the cab inclination 2 limiting has been in place; if no feedback signal is detected, the program returns, and the operation of the cab balance oil pump motor is continuously executed until a cab inclination 2 limit action signal is detected;

the cart control comprises the following steps:

(1) circularly scanning the feedback signal of the power supply for power air starting of the cart, detecting the feedback signal, executing the next program, stopping the program and waiting when the feedback signal is not detected;

(2) circularly scanning the feedback signal of the power contactor of the cart, detecting the feedback signal, executing the next program, and returning the program to the previous stage if the feedback signal is not detected;

(3) circularly scanning the feedback signal of the cart frequency converter, detecting the signal, and executing the next procedure; if no signal is detected, the program returns to the upper level;

(4) circularly scanning power supply feedback signals of a rail clamping device of the cart, limiting signals of the rail clamping device, power supply feedback signals and limiting signals of a power reel, wherein the above 4 signals are detected, and executing a next procedure; if 1 of 4 is not detected, the program returns to the upper level;

(5) circularly scanning front and rear limit signals of a cart, a rear tail cart stacking limit signal of a tail cart or a rear tail cart taking signal of the tail cart, detecting the front limit signal of the cart, the rear tail cart stacking signal of the tail cart or the rear tail cart taking signal of the tail cart, executing a cart front running program, detecting the rear limit of the cart, the rear tail cart stacking signal of the tail cart or the rear tail cart taking signal of the tail cart, and executing a cart rear running program; if no front and rear limit signals of the cart, a stacking signal of the tail cart behind the tail cart or a material taking signal of the tail cart behind the tail cart are detected, the program returns to the previous stage;

(6) circularly scanning a forward command or a backward command of the cart, and detecting the start of the cart by the forward command or the backward command; if no forward or backward instruction is detected, the program returns to the upper level;

(7) circularly scanning the feedback signal of the brake of the cart, detecting the feedback signal, executing the next procedure, and returning the procedure to the previous stage if the feedback signal is not detected;

the conditions all meet the requirement that the cart runs forwards or backwards;

the movable shovel control comprises movable shovel material taking control and movable shovel stacking control; the movable shovel material taking control comprises the following steps:

(1) circularly scanning the power air switch feedback signal of the movable shovel, if the signal is fed back, executing the next procedure, if the signal is not fed back, stopping the procedure, and waiting for the feedback signal;

(2) the movable shovel material taking limiting signal is scanned in a circulating mode, the movable shovel material taking limiting signal has feedback, the movable shovel is indicated to be in the material taking position, and the program does not need to continue to execute the material stacking action of the movable shovel; the material taking limit signal of the movable shovel is not fed back, and the program is executed downwards;

(4) circularly scanning a feedback signal of the movable oil dipper pump contactor, detecting the feedback signal, and continuously executing a program downwards; the program returns to the upper level without a feedback signal;

(5) circularly scanning the material taking limit signal of the movable shovel, and detecting a feedback signal to indicate that the movable shovel works in place; if no feedback signal is detected, the program returns to continue to execute the operation of the motor of the movable shovel oil pump until a movable shovel material taking limit action signal is detected;

the movable shovel stockpiling control comprises the following steps:

(2) circularly scanning the stacking limit signal of the movable shovel, wherein the stacking limit signal of the movable shovel has feedback, which indicates that the movable shovel is already at the stacking position, and the program does not need to continuously execute the stacking action of the movable shovel; the movable shovel stacking limit signal is not fed back, and the program is executed downwards;

(5) circularly scanning the material piling limit signal of the movable shovel, and detecting a feedback signal to indicate that the movable shovel works in place; if no feedback signal is detected, the program returns to continue to execute the operation of the motor of the movable shovel oil pump until a movable shovel stacking limiting action signal is detected;

the boom pitch control comprises the steps of:

(1) circularly scanning a feedback signal of the cantilever pitching power switch, detecting the feedback signal, executing the next program, and stopping the program if the feedback signal is not detected;

(2) circularly scanning the cantilever pitching highest limit switch signal or the cantilever pitching lowest limit switch signal, detecting the highest limit switch signal, executing a cantilever pitching motion program, if the highest limit switch signal is not detected, the cantilever pitching motion program can not be executed, and returning to the previous-stage program; detecting a lowest limit switch signal, executing a cantilever pitching and descending action program, if the lowest limit switch signal is not detected, the cantilever pitching and descending action program cannot be executed, and returning the program to the previous stage;

(3) circularly scanning whether the cantilever pitching and lifting instruction or the cantilever lifting instruction is sent or not, detecting the cantilever pitching and lifting instruction or the cantilever lifting instruction, executing the next program, and returning to the upper-level program if the cantilever pitching and lifting instruction or the cantilever lifting instruction is not detected;

(4) circularly scanning the feedback signal of the cantilever oil pump contactor, detecting the feedback signal of the cantilever oil pump contactor, executing the next procedure, and returning to the previous procedure if the feedback signal of the cantilever oil pump contactor is not detected;

(5) the cantilever pitching mechanism starts to lift; the cantilever is not lifted and output, and the program returns;

the trailer belt control comprises the following steps:

(1) circularly scanning a feedback signal of a trailer belt power air-on power supply, executing a program downwards when the feedback signal is detected, and waiting to execute the program when the feedback signal cannot be detected;

(2) circularly scanning a power supply feedback signal of a trailer belt contactor, executing a program downwards when the feedback signal is detected, and returning the program to the previous stage when the feedback signal cannot be detected;

(3) circularly scanning a feedback signal of a trailer belt frequency converter, executing a program downwards when the feedback signal is detected, and returning the program to the previous stage when the feedback signal cannot be detected;

(4) circularly scanning whether the cantilever belt is started or not, returning the program to the previous stage if the cantilever belt is not started, and executing the program downwards after the cantilever belt is started;

(5) circularly scanning a trailer belt deviation switch signal, an under-speed switch signal and a blockage switch signal, detecting 3 signals, executing a program downwards, and returning the program to the previous stage if one signal is not detected;

(6) circularly scanning whether the trailer belt sends a starting command or not, detecting the starting command, starting the trailer belt, and returning the program to the previous stage if the starting command is not detected;

when the conditions are met, the belt of the trailer starts to stack;

the tail vehicle rear tail vehicle control comprises tail vehicle rear tail vehicle stacking control and tail vehicle rear tail vehicle material taking control;

the control of the stacking of the rear trailer and the tail trailer comprises the following steps:

(1) circularly scanning a tail vehicle power air starting feedback signal, if the signal is fed back, executing the next procedure, if the signal is not fed back, stopping the procedure, and waiting for the feedback signal;

(2) circularly scanning a cart zero position signal, executing a next program when the cart is in a zero position, and returning the program to the previous stage when the cart is not in the zero position;

(3) circularly scanning the rear tail car stacking limit signal, feeding back the rear tail car stacking limit signal, executing the next procedure, and returning to the previous stage if the rear tail car stacking limit signal is not detected;

(4) circularly scanning the tail car stacking limit signal, wherein the tail car stacking limit signal has feedback, which indicates that the tail car is already at the stacking position, and the program does not need to continue to execute the tail car stacking action; the tail car stacking limit signal is not fed back, and the program is executed downwards;

(5) circularly scanning a stacking starting signal, if a starting signal command is sent, executing the program downwards, and if the starting signal command is not sent, returning the program to the previous one;

(6) circularly scanning a tail car oil pump contactor feedback signal, detecting the feedback signal, and continuing to execute a program downwards; the program returns to the upper level without a feedback signal;

(7) circularly scanning the tail car stacking limit signal, and detecting a feedback signal to indicate that the tail car is in place; if no feedback signal is detected, the program returns to continue to execute the operation of the tail car oil pump motor; until a tail car stacking signal is detected;

the tail vehicle rear tail vehicle material taking control comprises tail vehicle material taking control and rear tail vehicle material taking control;

the tail vehicle material taking control comprises the following steps:

(3) the tail car material taking limiting signal is scanned in a circulating mode, the tail car material taking limiting signal is fed back, the situation that the tail car is in the material taking position is shown, and the program does not need to continue to execute the tail car material taking action; the tail vehicle material taking limiting signal is not fed back, and the program is executed downwards;

(4) circularly scanning a material taking starting signal, if a starting signal command is sent, executing the program downwards, and if no starting signal command is sent, returning the program to the previous one;

(5) circularly scanning a tail car oil pump contactor feedback signal, detecting the feedback signal, and continuing to execute a program downwards; the program returns to the upper level without a feedback signal;

(6) circularly scanning a material taking limit signal of the tail car, and detecting a feedback signal to indicate that the tail car is in place; if no feedback signal is detected, the program returns to continue to execute the operation of the tail car oil pump motor until a tail car material taking signal is detected;

the rear tail vehicle material taking control comprises the following steps:

(3) circularly scanning the tail vehicle material taking limiting signal, feeding back the tail vehicle material taking limiting signal, executing the next procedure, and returning to the previous stage if the tail vehicle material taking limiting signal is not detected;

(4) the method comprises the steps that a material taking limiting signal of a rear tail car is cyclically scanned, the material taking limiting signal of the rear tail car is fed back, the situation that the tail car is at a material taking position is shown, and a program does not need to continue to execute the material taking action of the tail car; the material taking limit signal of the rear tail car is not fed back, and the program is executed downwards;

(6) after cyclic scanning, the tail car oil pump contactor feeds back a signal, detects the feedback signal and continues to execute a program downwards; the program returns to the upper level without a feedback signal;

(7) the tail car is fed with a material limiting signal after cyclic scanning, and a feedback signal is detected to indicate that the tail car is in place; if no feedback signal is detected, the program returns to continue to execute the operation of the oil pump motor of the rear tail car until a material taking signal of the rear tail car is detected;

the cantilever rotation control comprises the following steps:

(1) circularly scanning a cantilever rotation power idle switching feedback signal, detecting a switching feedback signal, and executing the next procedure; if no feedback signal is detected, the program stays;

(2) circularly scanning a feedback signal of the cantilever rotary contactor, detecting the feedback signal, executing the next procedure, and returning to the previous procedure if no feedback signal is detected;

(3) circularly scanning a feedback signal of the cantilever rotation frequency converter, detecting the feedback signal, executing the next procedure, and returning to the previous procedure if no feedback signal is detected;

(4) circularly scanning whether the communication between the PLC and the frequency converter is normal or not, if the communication is normal, executing the next program, interrupting the communication, and returning to the previous program;

(5) circularly scanning the signals of the left and right limit switches, detecting the switch signals, executing the next program, not detecting the switch signals, and returning to the previous program;

(6) circularly scanning a cantilever rotation left-right instruction, detecting a left or right instruction, starting cantilever rotation, and returning to the previous program if the left or right instruction is not detected;

(7) circularly scanning a brake contactor feedback signal, detecting the feedback signal, executing the next procedure, not detecting the feedback signal, and returning to the previous procedure;

and when the above conditions are met, the cantilever slewing mechanism rotates leftwards or rightwards according to the instruction.

The control system also comprises a touch screen control system;

the control method of the touch screen control system comprises the following steps: the method comprises the steps of circularly scanning a control power supply, a power supply, an emergency stop signal, temperature, humidity, power supply protection, QF1 detection and a cart emergency stop signal, wherein when the signal is detected, the signal is normal, and fault information is not output to a touch screen; if the signal is not detected, outputting corresponding signal loss fault information to the touch screen; the touch screen outputs corresponding signal information;

circularly scanning a cab emergency stop, a cart on-site emergency stop, a power reel emergency stop, a C3 belt material taking request signal, a coal control tail car lifting allowing signal, a cart front limit, a cart rear limit and a power reel loosening limit, wherein when the signal is detected, the signal is normal, and no fault information is output to a touch screen; if the signal is not detected, outputting corresponding signal loss fault information to the touch screen, and outputting corresponding information by the touch screen;

the method comprises the following steps of circularly scanning rail clamping device limiting, tail vehicle belt deviation limiting, trailer belt pull rope scramming, power reel central point and cantilever rotation right limiting, detecting signals, outputting no fault information to a touch screen, outputting corresponding lost fault information to the touch screen, and displaying corresponding fault information by the touch screen;

the method comprises the steps that a cantilever rotation left limit, a trailer deviation switch, a tail vehicle material taking limit, a trailer belt deviation switch and a tail vehicle material stacking limit are scanned circularly, when a signal is detected, fault information is not output to a touch screen, and when the signal is not detected, corresponding lost fault information is output to the touch screen, and the touch screen displays corresponding fault information;

after cyclic scanning, tail vehicle material taking limit, a trailer belt blocking switch, a cantilever belt blocking switch, a trailer belt underspeed switch, a cantilever belt underspeed switch, a cart limit switch, a rotation limit switch and cab balance ascending limit signals, wherein when the signals are detected, no fault information is output to a touch screen, no signals are detected, corresponding lost fault information is output to the touch screen, and the touch screen displays the corresponding fault information;

circularly scanning a balance descending limit, a moment limit, a cantilever belt deviation switch and a cantilever pull rope emergency stop signal of the cab, detecting the signal, not outputting fault information to the touch screen, outputting corresponding lost fault information to the touch screen if the signal is not detected, and displaying corresponding fault information by the touch screen;

circularly scanning signals of a movable shovel material taking limit, a movable shovel stacking limit, a cantilever pitching highest limit, a cantilever pitching lowest limit, a bucket-wheel chute stacking limit, a bucket-wheel chute material taking limit, a cart main power supply and a cart main contactor, outputting no fault information to a touch screen when the signals are detected, outputting corresponding lost fault information to the touch screen, and displaying corresponding fault information by the touch screen;

circularly scanning signals of a normal cart frequency converter, a cart brake power supply and a cart motor, detecting the signals, not sending fault information to the touch screen, sending corresponding lost fault information to the touch screen when the signals are not detected, and displaying corresponding fault information by the touch screen; circularly scanning the brake signal of the cart, detecting the signal, sending no fault information to the touch screen, detecting the signal, sending the fault information to the touch screen, and displaying the corresponding fault information by the touch screen;

circularly scanning signals of a cart motor and a cart brake, detecting the signals, not sending fault information to the touch screen, sending corresponding lost fault information to the touch screen when the signals are not detected, and displaying corresponding fault information by the touch screen;

circularly scanning signals of a cart brake, a power reel power supply power reel contactor and a power reel motor, detecting the signals, and not sending fault information to the touch screen; if the signal cannot be detected, sending corresponding lost fault information to the touch screen, and displaying the corresponding fault information by the touch screen;

circularly scanning rail clamping device power supply, tail vehicle oil pump contactor, trailer belt power supply, trailer belt contactor, normal frequency conversion of trailer belt, hopper wheel chute oil pump power supply signals, detecting the signals, not sending fault information to the touch screen, not detecting the signals, sending corresponding lost fault information to the touch screen, and displaying corresponding fault information by the touch screen; circularly scanning a rail clamping device to detect signals, detecting no signals, not sending fault information to the touch screen, detecting the signals, sending lost fault information to the touch screen, and displaying corresponding fault information by the touch screen;

circularly scanning power signals of a bucket wheel chute oil pump contactor, a bucket wheel power supply, a bucket wheel contactor, a bucket wheel thermal protection device, a cantilever belt power supply, a cantilever belt brake power supply, detecting the signals, sending no fault information to a touch screen, sending no signal, sending the fault information to the touch screen, and displaying the corresponding fault information by the touch screen;

the method comprises the steps that signals of a cantilever brake protector, a movable shovel power supply, a movable shovel contactor, a cantilever oil pump power supply, a cantilever oil pump contactor and a cantilever control oil pump power supply are scanned in a circulating mode, no fault information is sent to a touch screen when the signals are detected, no signals can be detected, the fault information is sent to the touch screen, and the touch screen displays corresponding fault information; circularly scanning a cantilever belt brake detection signal, detecting no signal, and not sending fault information to the touch screen;

the method comprises the steps that a cantilever is cyclically scanned to control signals for protecting an oil pump contactor, a rotary power supply, a rotary contactor, a rotary variable frequency normal power supply, a rotary brake power supply and a rotary motor, when the signals are detected, fault information is not sent to a touch screen, the signals cannot be detected, the fault information is sent to the touch screen, and the touch screen displays corresponding fault information; circularly scanning the detection signal of the rotary brake, and not sending fault information to the touch screen if the signal cannot be detected;

after the fault is eliminated, fault record elimination is carried out; the method comprises the steps of cantilever pitching encoder data reading, cantilever revolving encoder data reading and cart encoder data reading.

The invention effectively ensures the safe and stable operation and maintenance of the equipment and is convenient to operate.

Drawings

The invention is further illustrated by the following figures and examples.

Fig. 1 is a main system control flow chart.

Fig. 2 is a tail car stacking control flow chart.

Fig. 3 is a tail car material taking control flow chart.

Fig. 4 is a rear tail car material taking control flow chart.

Fig. 5 is a rear tail car stacking control flow chart.

Fig. 6 is a flow chart of active shovel material take control.

Fig. 7 is a flow chart of active shovel windrow control.

FIG. 8 is a flow chart of bucket wheel slot take-off control.

Fig. 9 is a bucket wheel well windage control flow chart.

Fig. 10 is a first cab balance control flow chart.

Fig. 11 is a second cab balance control flow chart.

FIG. 12 is a flow chart of cantilever belt windup control.

Fig. 13 is a flow chart of a cantilevered belt take off control.

Fig. 14 is a trailer belt control flow diagram.

Fig. 15 is a bucket wheel control flowchart.

Fig. 16 is a cart control flowchart.

Fig. 17 is a flowchart of the boom swing control.

Detailed Description

A low-voltage electrical system of a cantilever bucket-wheel stacker reclaimer comprises an electrical control cabinet, wherein the electrical control cabinet comprises a power distribution and lighting cabinet, a walking-tail car cabinet, a bucket-wheel cantilever belt cabinet, a gyration-pitching cabinet, a PLC (programmable logic controller) main station and a power distribution cabinet thereof, a remote station and a relay cabinet; the protection grade of each cabinet body is not lower than IP54, the thickness of the door plate is 2-3 mm, and a fixed installation steel base with the height of 100-150 mm is matched;

the control method comprises the following steps:

the main system control comprises the following steps:

(1) powering up the PLC;

the above conditions are met, and the system operation is allowed;

after the conditions are met, the cantilever belt starts to stack;

the cantilever belt material taking control comprises the following steps:

the bucket wheel groove stacking control comprises the following steps:

wherein the second cab balance control comprises the steps of:

the cart control comprises the following steps:

the movable shovel stockpiling control comprises the following steps:

the boom pitch control comprises the steps of:

the trailer belt control comprises the following steps:

when the conditions are met, the belt of the trailer starts to stack;

the tail vehicle material taking control comprises the following steps:

the rear tail vehicle material taking control comprises the following steps:

the cantilever rotation control comprises the following steps:

The control system also comprises a touch screen control system;

Claims

1. The utility model provides a cantilever bucket-wheel stacker reclaimer low pressure electrical system, includes the electrical control cabinet, characterized by: the electrical control cabinet comprises a power distribution and lighting cabinet, a walking-tail car cabinet, a bucket wheel-cantilever belt cabinet, a gyration-pitching cabinet, a PLC main station and a power distribution cabinet thereof, a remote station and a relay cabinet; the protection grade of each cabinet body is not lower than IP54, the thickness of the door plate is 2-3 mm, and a fixed installation steel base with the height of 100-150 mm is matched;

the power distribution and lighting cabinet comprises a power loop, a public load and a lighting power distribution part, and is connected with the next-stage circuit breakers through the three-phase copper bar bus of the upper small chamber; the inlet and outlet wires of the circuit breaker and the contactor of 30A or above are connected by copper bars; a power supply voltmeter, a current meter and a bus anti-surge protection device 1 group are arranged; the power loop is provided with a 400V power supply main circuit breaker and a 400V public load power supply main circuit breaker; the lighting power distribution comprises 1 400V/220V 40kVA three-phase power isolation transformer, 1 lighting main power circuit breaker and no less than 10 branches of lighting power circuit breakers; a protective isolation insulating plate is additionally arranged at the wiring terminal and the periphery of the illumination isolation transformer;

in the rotary-bowel-upward cabinet, a cantilever rotary motor is driven by a frequency converter, and the rotary-bowel-upward cabinet has an emergency bypass function;

the control system comprises a main system control system, a cantilever belt control system, a bucket wheel-wheel groove-cab balance control system, a cart control system, a movable shovel control system, a cantilever pitching control system, a trailer belt control system, a trailer rear trailer control system and a cantilever rotation control system.

2. The low-voltage electrical system of the cantilever bucket-wheel stacker-reclaimer of claim 1, comprising an electrical control cabinet, characterized in that: the control method of the control system comprises the following steps:

the main system control comprises the following steps:

(1) powering up the PLC;

the above conditions are met, and the system operation is allowed;

after the conditions are met, the cantilever belt starts to stack;

the cantilever belt material taking control comprises the following steps:

the bucket wheel groove stacking control comprises the following steps:

wherein the second cab balance control comprises the steps of:

the cart control comprises the following steps:

the movable shovel stockpiling control comprises the following steps:

the boom pitch control comprises the steps of:

the trailer belt control comprises the following steps:

when the conditions are met, the belt of the trailer starts to stack;

the tail vehicle material taking control comprises the following steps:

the rear tail vehicle material taking control comprises the following steps:

the cantilever rotation control comprises the following steps:

3. The low voltage electrical system of the cantilever bucket-wheel stacker reclaimer of claim 1 or 2, wherein: the control system also comprises a touch screen control system;