Intelligent electric control system of winch hoist

Abstract

The utility model discloses an intelligent electric control system of a winch hoist, which comprises an electric control cabinet, the electric control cabinet comprises an electric control unit, a winch sensor, a gate sensor, a motor driving unit and a touch screen, the winch sensor and the gate sensor are both connected with the electric control unit, and the motor driving unit is connected with the electric control unit. The electrical control unit is further connected with a touch screen, a graphic operation interface is arranged on the touch screen and displays analog signals on the touch screen, and lifting parameters of the gate can be set, system state information can be checked and lifting of the gate can be controlled through the graphic operation interface. According to the utility model, the problems of low automation level and imperfect fault alarm of the winch hoist are solved, the parameters of the gate and the winch are monitored through the sensor, and when the numerical value exceeds a preset threshold value, the motor driving unit is shut down and gives an alarm.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hoist electric control system, concretely is a kind of hoist intelligent electric control system. BACKGROUND

[0002] In water conservancy project, the opening and closing of gate have important significance to regulate water volume, flood control and drainage. Although the traditional hoist can realize the basic gate opening and closing function, there are deficiencies in the aspects of automation degree, precision control and fault alarm. The imperfect fault detection mechanism makes it difficult to find and handle the equipment failure in time. Once electrical fault occurs, such as motor current is too large, motor abnormal sound, motor locked-rotor, etc. Mechanical failure: such as steel wire rope broken wire, brake shoe wear seriously, etc. May cause serious safety accidents and economic losses.

[0003] The company also designs a hydraulic hoist electrical control cabinet with automatic fault patrol function. The control cabinet is applied to the monitoring of motor pump group, electromagnetic valve and gate. There is no similar electric control system in the system of hoist controlling gate. Therefore, the hoist intelligent electric control system is designed to monitor the hoist and solve the problems of low automation degree, poor precision control and imperfect fault alarm of existing hoist. CONTENT OF UTILITY MODEL

[0004] The utility model aims at providing a kind of hoist intelligent electric control system, monitor power voltage, motor current, gate opening, load monitoring, motor vibration, motor volume, brake shoe wear monitoring, steel wire rope flaw detection sensor data, after monitoring value exceeds set threshold, system determines as system failure, PLC controller immediately stops three-phase motor operation, and displays fault information in man-machine interface, improve the troubleshooting efficiency of fault.

[0005] The utility model provides the following technical scheme: a kind of hoist intelligent electric control system, including electrical control cabinet, its characterized in that: the electrical control cabinet includes electrical control unit, hoist sensor, gate sensor, motor drive unit and touch screen, the hoist sensor and gate sensor are connected with electrical control unit, the electrical control unit is also connected with touch screen;

[0006] The electrical control unit receives signals from hoist sensor and gate sensor, outputs control instructions according to preset program, and the electrical control unit simulates and transmits the received signals to the touch screen at the same time;

[0007] The hoist sensor is used for monitoring power voltage, motor current, motor vibration, motor volume and brake shoe wear, and the gate sensor is used for monitoring gate opening, load and steel wire rope wear;

[0008] The motor driving unit drives the winding drum of the hoist to rotate forward or reversely by receiving the control instruction, so as to realize the rising or falling of the gate.

[0009] The graphic operation interface is arranged on the touch screen, displays analog signals on the touch screen, and can set the lifting parameters of the gate, view system state information, and control the gate lifting through the graphic operation interface.

[0010] Further, the hoist sensor comprises an electric cabinet voltage monitoring module, a motor current monitoring module, a motor vibration monitoring module, a motor volume monitoring module and a brake shoe wear monitoring module.

[0011] Preferably, the electric cabinet voltage monitoring module is a voltmeter, and the motor current monitoring module is an ammeter.

[0012] Further, the gate sensor comprises a gate opening monitoring module, a load monitoring module and a steel wire rope flaw detection module.

[0013] Preferably, the gate opening monitoring module is a gate opening instrument.

[0014] Further, the electric control cabinet is further provided with an indicator light area and a button operation area, the indicator light area is used for displaying the running state of each device of the hoist, the button operation area is used for manually controlling the opening and closing of the gate, and a miniature circuit breaker, a surge protector, a phase sequence protector and a PLC controller are further installed, the miniature circuit breaker is used for providing power supply for the three-phase motor and the PLC controller, the surge protector is used for protecting electrical equipment from transient overvoltage, and the phase sequence protector is used for preventing the phase sequence of the motor from being wrong.

[0015] Preferably, the voltage and motor current of the electric control cabinet are measured in real time through the voltmeter and the ammeter, the gate opening and closing are controlled through the touch screen, and alarm information is displayed, and the phase sequence protector provides phase sequence protection and missing item monitoring for the three-phase motor.

[0016] Further, the electric control cabinet is further provided with an exchange, a switching power supply, a mutual inductor, an intermediate relay, a contactor, a thermal relay, an isolation transformer, a dehumidifier, a sensor wiring terminal and a motor wiring terminal, the exchange is used for data interaction communication, the switching power supply is used for power supply for a control loop, the mutual inductor is used for monitoring motor current, the intermediate relay is used for signal conversion, the contactor is used for controlling motor operation, the thermal relay is used for protecting motor overcurrent, and the isolation transformer is used for voltage stabilization and interference suppression.

[0017] Compared with the prior art, the utility model discloses the beneficial effects achieved are:

[0018] (1) through the monitoring of winch and gate, when the fault occurs, such as the voltage of the electric cabinet is too large, the motor current is too large, the gate opening is out of limit, the load is out of limit, the motor vibration is too large, the motor volume is abnormal, the brake shoe is seriously worn, the steel wire rope is broken, etc., the PLC controller internal program will immediately stop the motor running program, the gate will stop immediately, and the alarm information will be output to the touch screen, so as to prevent safety accidents, and the fault information can be checked on the touch screen to accurately troubleshoot the fault;

[0019] (2) two modes of manual and automatic, automatic control and manual control are two separate electric circuits, when the automatic control mode fails, the manual control mode can operate the gate in emergency. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with embodiments of the present application to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0021] Figure 1 is a front view of the electrical control cabinet of the present application;

[0022] Figure 2 is an internal structure diagram of the electrical control cabinet of the present application;

[0023] Figure 3 is a system module block diagram of the present application;

[0024] Figure 4 is a power distribution circuit diagram of the present application;

[0025] Figure 5 is a phase sequence protection circuit diagram of the present application;

[0026] Figure 6 is a circuit diagram of manual and automatic control of the present application;

[0027] Figure 7 is a circuit diagram of the indicator light area of the present application;

[0028] Figure 8 is a circuit diagram of motor running and protection of the present application;

[0029] Figure 9 is a button operation area circuit diagram of the present application;

[0030] Figure 10 is a circuit diagram of analog signal of the present application;

[0031] In the figure: 1, electrical control cabinet; 2, voltmeter; 3, ammeter; 4, touch screen; 5, indicator light area; 6, button operation area; 7, daylight lamp; 8, miniature circuit breaker; 9, surge protector; 10, phase sequence protector; 11, PLC controller; 12, switch; 13, switching power supply; 14, mutual inductor; 15, intermediate relay; 16, contactor; 17, isolation transformer; 18, thermal relay; 19, dehumidifier; 20, sensor terminal; 21, motor terminal. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0033] Please refer to Figures 1 to 3 The utility model provides technical scheme: a hoist hoist intelligent electric control system, including electrical control cabinet 1, electrical control cabinet 1 includes electrical control unit, hoist sensor, gate sensor, motor drive unit and touch screen 4, hoist sensor and gate sensor are connected with electrical control unit, electrical control unit is connected with touch screen 4 also, electrical control unit adopts PLC controller, receives the signal from various sensors through PLC, and according to the preset program output control instruction, after receiving the signal of PLC controller, motor drive unit drives motor forward and reverse, completes the opening and closing action of gate, once the data of sensor exceeds the preset alarm threshold, will send alarm, and PLC controller will output signal immediately and make motor drive unit stop, so that three-phase motor stops running;

[0034] Electrical control unit receives the signal from hoist sensor and gate sensor, and according to the preset program output control instruction, and at the same time, electrical control unit simulates and transmits the received signal to touch screen 4, and various operation data are directly displayed by using touch screen 4, and at the time of alarm, fault information can be obtained through touch screen 4, which improves troubleshooting and maintenance efficiency;

[0035] Hoist sensor is used for monitoring power voltage, motor current, motor vibration, motor volume and brake shoe wear, and gate sensor is used for monitoring gate opening, load and steel wire rope wear;

[0036] Motor drive unit drives the drum of hoist hoist to rotate forward or reverse through receiving the three-phase motor driven by control instruction, realizes the rising or falling of gate;

[0037] The graphical operation interface is arranged on the touch screen 4, displays analog signals on the touch screen 4, and can set the lifting parameters of the gate, view system state information, and control the gate lifting through the graphical operation interface.

[0038] The winch sensor comprises an electric cabinet voltage monitoring module, a motor current monitoring module, a motor vibration monitoring module, a motor volume monitoring module, and a brake shoe wear monitoring module.

[0039] The gate sensor comprises a gate opening monitoring module, a load monitoring module, and a steel wire rope flaw detection module, and the gate opening monitoring module is a gate opening instrument.

[0040] The electric control cabinet 1 is further provided with an indicator light area 5 and a button operation area 6, the indicator light area 5 is used for displaying the running state of each device of the gate hoist, the button operation area 6 is used for manually controlling the opening and closing of the gate, and a miniature circuit breaker 8, a surge protector 9, a phase sequence protector 10, and a PLC controller 11 are further installed, the miniature circuit breaker 8 is used for providing power supply for the three-phase motor and the PLC controller 11, the surge protector 9 is used for protecting the electrical equipment from transient overvoltage, and the phase sequence protector 10 is used for preventing the error of the motor phase sequence.

[0041] The electric control cabinet 1 is further provided with an exchange 12, a switching power supply 13, a mutual inductor 14, an intermediate relay 15, a contactor 16, a thermal relay 18, an isolation transformer 17, a dehumidifier 19, a sensor wiring terminal 20, and a motor wiring terminal 21, the exchange 12 is used for data interaction communication, the switching power supply 13 is used for power supply for the control circuit, the mutual inductor 14 is used for monitoring the motor current, the intermediate relay 15 is used for signal conversion, the contactor 16 is used for controlling the motor operation, the thermal relay 18 is used for protecting the motor overcurrent, and the isolation transformer 17 is used for voltage stabilization and interference suppression.

[0042] As Figures 4 to 10 , the technical solution comprises a manual mode and an automatic mode, the manual mode gradually completes the opening and closing actions of the gate by operating the button operation area 6 of the electric control cabinet 1;

[0043] The manual mode steps are as follows:

[0044] First, close all the miniature circuit breakers 8, and select the control mode as the manual mode in the button operation area 6;

[0045] Gate lifting: press the gate lifting button (1SB1) in the button operation area 6, and the gate lifting motor is started to lift the gate; Figure 6 It can be seen from the manual control wiring diagram that the intermediate relay 1KA1 is attracted and self-locked, and KM1 is powered and attracted after being attracted. Figure 5It can be seen that the main motor and the brake motor are powered on after KM1 is attracted, the hoist drum will wind the steel wire rope clockwise to lift the gate, at this time Figure 1 The motor operation indicator light (2SB1) and the rising operation indicator light (2SB3) in the middle indicator light area 5 are on. When the motor current is too large, the FR1 thermal relay acts, the circuit is disconnected, and the motor stops running, Figure 1 The motor fault indicator light in the middle indicator light area 5 is on. Figure 9 The PLC controller receives the fault signal, and the fault information and the fault code are transmitted to Figure 1 the touch screen 4 through the TCP communication protocol;

[0046] Gate stop: by pressing the gate stop button (1SB2) in the button operation area 6, Figure 6 from the manual control wiring diagram, it can be seen that the intermediate relay 1KA1 is disconnected, so that Figure 5 KM1 is disconnected and the motor stops running;

[0047] Gate down: by pressing the gate down button (1SB3) in the button operation area 6, Figure 6 from the manual control wiring diagram, it can be seen that the intermediate relay 1KA2 is attracted and self-locked, and after being attracted, KM2 is powered on and attracted. From Figure 5 it can be seen that the main motor and the brake motor are running after KM2 is attracted, the hoist drum will loosen the steel wire rope to lower the gate. At this time Figure 1 the motor operation indicator light (2SB1) and the down operation indicator light (2SB4) in the middle indicator light area are on.

[0048] Automatic mode:

[0049] In this mode, the control of the gate is completed by the internal program of the PLC controller. The operator first sets the initial position, target position, alarm threshold and other parameters of the gate on the touch screen. Only by clicking Figure 9 a configuration button (gate up or gate down button) on the touch screen 4, the system will automatically complete the gate up or gate down action in turn, and when the gate is raised or lowered to the set position (which can be set on the touch screen), the system automatically stops, realizing one-key operation of the gate. Figure 1

[0050] ​Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A hoist intelligent electric control system, comprising an electric control cabinet, characterized in that: The electric control cabinet comprises an electric control unit, a hoist sensor, a gate sensor, a motor driving unit and a touch screen, the hoist sensor and the gate sensor are connected with the electric control unit, and the electric control unit is also connected with the touch screen; The electric control unit outputs control instructions according to a preset program by receiving signals from the hoist sensor and the gate sensor, and the electric control unit analogizes and transmits the received signals to the touch screen; The hoist sensor is used for monitoring power voltage, motor current, motor vibration, motor volume and brake shoe wear, and the gate sensor is used for monitoring gate opening, load and steel wire rope wear; The motor driving unit drives the hoist headstock to rotate forward or reversely by receiving the control instructions, so as to realize the rising or falling of the gate. The touch screen is provided with a graphic operation interface, the graphic operation interface displays analog signals on the touch screen, and the graphic operation interface can be used to set the lifting parameters of the gate, check system state information and control the lifting of the gate.

2. The intelligent electric control system of a hoist according to claim 1, characterized in that: The hoist sensor comprises an electric cabinet voltage monitoring module, a motor current monitoring module, a motor vibration monitoring module, a motor volume monitoring module and a brake shoe wear monitoring module.

3. The intelligent electric control system of a hoist according to claim 1, characterized in that: The gate sensor comprises a gate opening monitoring module, a load monitoring module and a steel wire rope flaw detection module.

4. The intelligent electric control system of a hoist according to claim 1, characterized in that: The electric control cabinet is also provided with an indicator light area and a button operation area, the indicator light area is used to display the running state of each device of the hoist, the button operation area is used to manually control the opening and closing of the gate, and a miniature circuit breaker, a surge protector, a phase sequence protector and a PLC controller are also installed, the miniature circuit breaker is used to provide power supply for the three-phase motor and the PLC controller, the surge protector is used to protect electrical equipment from transient overvoltage, and the phase sequence protector is used to prevent errors in the phase sequence of the motor.

5. The intelligent electric control system of a hoist according to claim 2, characterized in that: The electric cabinet voltage monitoring module is a voltmeter, and the motor current monitoring module is an ammeter.

6. The intelligent electric control system of a hoist according to claim 3, characterized in that: The gate opening monitoring module is a gate opening instrument.

7. The intelligent electric control system of a hoist according to claim 1, characterized in that: The electric control cabinet is also provided with a switch, a switching power supply, a mutual inductor, an intermediate relay, a contactor, a thermal relay, an isolation transformer, a dehumidifier, a sensor wiring terminal and a motor wiring terminal, the switch is used for data interaction communication, the switching power supply is used to supply power to the control circuit, the mutual inductor is used to monitor the motor current, the intermediate relay is used for signal conversion, the contactor is used to control the operation of the motor, the thermal relay is used to protect the motor from overcurrent, and the isolation transformer is used for voltage stabilization and interference suppression.

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