CN207559546U - Mobile electric dummy car runaway protector - Google Patents

Abstract

The utility model is related to a kind of mobile electric dummy car runaway protectors, it is characterised in that：By be used to acquiring the advanced networks instrument of dummy car power of motor signal, the controller being connect by MODBUS RTU communications protocol with the signal output end of advanced networks instrument, be series at discharging vehicle motor where in power network line and be connected with the signal output end I of controller shunted exciter tripping breaker, be series at discharging vehicle motor where disconnecting switch in power network line form, the controller is additionally provided with the signal output end II for controlling the work of dummy car liquid braking device, the signal output end III for controlling the power contactor of discharging vehicle motor.The present apparatus can not only realize " driving " protection to electronic dummy car, and the real time data that can also be run to dummy car carries out analysis record and monitoring, makes user that equipment operation condition is prejudged and be investigated in advance, prevent fault coverage from expanding.

Description

Mobile electric dummy car runaway protector

Technical field

The utility model is related to mobile electric dummy car Electrical Control Technology, particularly a kind of mobile electric dummy car driving Protective device.

Background technology

Belt conveyor plays an important role in the transmitting bulk material of industry-by-industry, belt conveyor delivery of bulk object There is single-point during material（Head）Discharging and multiple discharge.Traditional electronic dummy car is since electrical control is backward, fixed-point unloading positioning In inaccurate, spreading, especially environmental pollution, operational process often " driving ", thus cannot steady reliability service so that causing The accidents such as equipment damage.

Operation principle：Electronic dummy car is connected on the adhesive tape of working face between belt conveyer head roller and stern roll On, adhesive tape operating tilts, the material lifting on adhesive tape to certain altitude, then to roll by dummy car head by dummy car Cylinder falls into material-falling hopper below roller, then is dropped material in preset unilateral side by the electronic blanking distributor below material-falling hopper Or bilateral feed bin or drop on the adhesive tape that moves forwards of centre, material is allowed to continue to proceed to terminal feed bin.In the process, The reason of electronic dummy car " driving " is：1）, dummy car and belt conveyor adhesive tape traffic direction in the same direction when driving, it is defeated in belt The drive of the external force such as machine conveyor belt tension is sent to drive off dummy car beyond design or the speed of travel being previously set traveling, since external force acts on With the traveling inertia of dummy car, acceleration is getting faster, and when the control device of itself or system is unable to control, is ultimately caused and is set Standby collide again ruins or even belt conveyor is damaged together；2）, electric wiring interference, parking caused by electric components aging Tripping.

The method for solving electronic dummy car " driving " at present is mainly following several：1）, ensure dummy car structure type set Meter is reasonable；2), increase intelligent electrical control gear, it is micro- by rotary encoder of the device on traveling wheel and PLC or upper Machine coordinates, and monitors the speed of service of dummy car；3）, start since parking in dummy car, when opening brake and preparing walking, profit It gives dummy car hoofing part mechanism one reactive torque with intelligence control system, restores forward drive in the short time, reduce discharging Vehicle starts impact, can also contain the generation of driving.But the control effect of above-mentioned three kinds of methods is to be improved.

Invention content

The purpose of this utility model is to provide for a kind of mobile electric dummy car runaway protector, can not only realize " driving " of electronic dummy car is protected, the real time data that can also be run to dummy car carries out analysis record and monitoring, uses Family prejudges and investigates in advance to equipment operation condition, prevents fault coverage from expanding.

The technical solution of the utility model is：

A kind of mobile electric dummy car runaway protector, it is characterised in that：By being used to acquire dummy car power of motor letter Number advanced networks instrument, the control that is connect with the signal output end of advanced networks instrument by MODBUS-RTU communications protocol Device, be series at the shunted exciter tripping breaker being connected in power network line where discharging vehicle motor and with the signal output end I of controller, Disconnecting switch composition in power network line where being series at discharging vehicle motor, the controller are additionally provided with to control dummy car liquid Press signal output end II, the signal output end III for controlling the power contactor of discharging vehicle motor of brake operation；

When dummy car is walked under setting speed state, discharging vehicle motor is motoring condition, and power grid inputs electric work to motor Rate, advanced networks instrument display performance number is just at this time；Dummy car exceeds under setting speed state when walking, i.e. driving state, Discharging vehicle motor is regenerative electric power braking state, and motor feeds back electrical power to power grid, and advanced networks instrument shows performance number at this time It is negative；By controller by the situation of change of dummy car power of motor value and the corresponding proportionate relationship of speed setting, when differentiation is unloaded When truck travel speed exceeds setting speed setting ratio I, by controller output signal control liquid braking device work, make discharging Vehicle slows down；When differentiating that dummy car travel speed exceeds setting speed setting ratio II, power supply is controlled by controller output signal Contactor makes dummy car stop；When there is dummy car parking misaction, directly tripped shunted exciter tripping by controller output signal Breaker is cut off the power.

Above-mentioned mobile electric dummy car runaway protector, the controller by PROFIBUS-DP communications protocol with Background monitoring center connects, to transmit monitoring data to backstage monitoring center.

Above-mentioned mobile electric dummy car runaway protector, the input terminal of the controller be equipped with positive start button, Reverse starting button and stopping/reset button send out startup to controller by positive start button and reverse starting button and refer to It enables, control discharging vehicle motor is positive, inverted running power contactor.

Above-mentioned mobile electric dummy car runaway protector, the input terminal of the controller are forward and reverse equipped with dummy car Track crosses limit contact point, and limit signal is crossed, and exported and believed by controller to trigger forward and reverse track to controller transmission dummy car Number tripping shunted exciter tripping breaker, cut off the power.

Above-mentioned mobile electric dummy car runaway protector, the signal input part and electric current of the advanced networks instrument are mutual Sensor is connected, and first winding and the discharging vehicle motor series connection of the current transformer enter in power network line, the Current Mutual Inductance The secondary winding of device is connected with the signal input part of advanced networks instrument, and power network line voltage is directly accessed advanced networks instrument In.

The beneficial effects of the utility model are：

The present apparatus carries out power signal acquisition using advanced networks instrument, by controller by the variation feelings of dummy car power Condition and the corresponding proportionate relationship of speed setting, and then the operating status of dummy car is prejudged in advance, ensure electronic dummy car Such as there is dummy car parking misaction in safety, steady, reliability service, are directly tripped shunted exciter tripping by controller output signal Breaker is cut off the power, and prevents fault coverage from expanding.It can not only realize to " driving " of electronic dummy car protection, it can be with Analysis record and monitoring are carried out to the real time data of dummy car operation.The present apparatus employs intelligent electrical control, increases and holds back The effective measures of " driving " are made, prevent failure propagation, economic loss is reduced, ensures personal safety.

Description of the drawings

Fig. 1 is the control principle drawing of the utility model；

Fig. 2 is the schematic diagram of the controller of the utility model.

Specific embodiment

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1 and Figure 2, the mobile electric dummy car runaway protector acquires dummy car power of motor letter by being used for Number advanced networks instrument 1, the control that is connect with the signal output end of advanced networks instrument 1 by MODBUS-RTU communications protocol Device 2, the shunted exciter tripping for being series in 4 place power network line of discharging vehicle motor and being connected with the signal output end I of controller 2 open circuit Device QF2, the disconnecting switch GL being series in 4 place power network line of discharging vehicle motor are formed.The controller 2 is additionally provided with to control The signal output end II of dummy car liquid braking device processed work, for controlling power contactor KM1, KM2 of discharging vehicle motor 4 Signal output end III.The controller 2 is connect by PROFIBUS-DP communications protocol with background monitoring center 3, to be supervised to backstage Transmit monitoring data in control center 3.

The input terminal of the controller 2 is equipped with positive start button ST1, reverse starting button ST2 and stopping/reset button SP sends out enabled instruction by positive start button ST1 and reverse starting button ST2 to controller, and control discharging vehicle motor is just To power contactor KM1, KM2 of, inverted running.The input terminal of the controller 2 is additionally provided with dummy car direct orbit and crosses limiting Contact ZXW and retrograde orbit cross limit contact point FXW, and limit signal is crossed to trigger forward and reverse track to controller transmission dummy car, And it by controller output signal tripping shunted exciter tripping circuit breaker Q F2, cuts off the power.

In the present embodiment, the signal input part of the advanced networks instrument 1 is connected with Current Transmit, and the electric current is mutual The first winding of sensor CT is connected with discharging vehicle motor 4 in access power network line, the secondary winding of current transformer and high-end net The signal input part of network instrument 1 is connected, and advanced networks instrument 1 collects 0-5A electric currents, and power grid according to Current Transmit Line voltage distribution is directly accessed in advanced networks instrument.

The model GL-63/3 of the disconnecting switch GL, the model CM2-63L/3310 of shunted exciter tripping circuit breaker Q F2, The model BD-4E of advanced networks instrument 1, controller 2 be SIEMENS SMART200 controllers, model 6ES72881SR20-0AA0。

Operation principle：During normal operation, enabled instruction is sent out to controller 2 by forward and reverse start button ST1, ST2, Control power contactor KM1, KM2 of forward and reverse operation.0 ~ 5A electricity of Current Transmit is acquired by advanced networks instrument 1 Signal, 0 ~ 220V voltage signals are flowed, detection obtains the power of motor value of electronic dummy car.Dummy car is under setting speed state During walking, discharging vehicle motor 4 is motoring condition, and power grid shows performance number to motor input electric power, at this time advanced networks instrument 1 For just；When dummy car is walked under setting speed state, i.e., driving state, discharging vehicle motor 4 are regenerative electric power braking state, Motor feeds back electrical power to power grid, and advanced networks instrument 1 shows that performance number is negative at this time；By controller 2 by discharging vehicle motor The situation of change of performance number and the corresponding proportionate relationship of speed setting, when differentiation dummy car travel speed exceeds setting speed 5% When, by 2 output signal Q3 of controller control liquid braking device work, dummy car is made to slow down；When differentiation dummy car travel speed surpasses When going out setting speed 10%, power contactor KM1 or power contactor KM2 is controlled by controller 2 output signal Q1 or Q2, makes to unload Truck stops；When occur dummy car parking misaction（Including orderly shutdown tripping, electric wiring interference, electric components are old When tripping or the dummy car normal walking of stopping caused by change, when triggering is positive, retrograde orbit crosses limit contact point signal）, directly by 2 output signal Q4 of controller tripping shunted exciter tripping circuit breaker Q F2, cut off the power.

Claims (5)

1. a kind of mobile electric dummy car runaway protector, it is characterised in that：By being used to acquire dummy car power of motor signal Advanced networks instrument, connect by MODBUS-RTU communications protocol with the signal output end of advanced networks instrument controller, Shunted exciter tripping breaker, the string being connected in power network line where being series at discharging vehicle motor and with the signal output end I of controller Disconnecting switch composition in power network line where being coupled to discharging vehicle motor, the controller are additionally provided with to control dummy car hydraulic pressure The signal output end II of brake operation, the signal output end III for controlling the power contactor of discharging vehicle motor；Dummy car When walking under setting speed state, discharging vehicle motor is motoring condition, and power grid is to motor input electric power, advanced networks at this time Instrument shows performance number for just；When dummy car is walked under setting speed state, i.e., driving state, discharging vehicle motor are regeneration Dynamic brake state, motor feed back electrical power to power grid, and advanced networks instrument shows that performance number is negative at this time；It will by controller The situation of change of dummy car power of motor value and the corresponding proportionate relationship of speed setting are set when differentiating that dummy car travel speed exceeds During constant speed degree setting ratio I, by controller output signal control liquid braking device work, dummy car is made to slow down；When differentiation discharging When vehicle travel speed exceeds setting speed setting ratio II, power contactor is controlled by controller output signal, stops dummy car Vehicle；When there is dummy car parking misaction, directly by controller output signal tripping shunted exciter tripping breaker, cut off the power.

2. mobile electric dummy car runaway protector according to claim 1, it is characterised in that：The controller passes through PROFIBUS-DP communications protocol is connect with background monitoring center.

3. mobile electric dummy car runaway protector according to claim 1, it is characterised in that：The controller it is defeated Enter end and be equipped with positive start button, reverse starting button and stopping/reset button, pressed by positive start button and reverse starting Button sends out enabled instruction to controller, and control discharging vehicle motor is positive, inverted running power contactor.

4. mobile electric dummy car runaway protector according to claim 1, it is characterised in that：The controller it is defeated Enter end and cross limit contact point equipped with the forward and reverse track of dummy car, limiting is crossed to trigger forward and reverse track to controller transmission dummy car Signal, and by controller output signal tripping shunted exciter tripping breaker, cut off the power.

5. mobile electric dummy car runaway protector according to claim 1, it is characterised in that：The advanced networks instrument The signal input part of table is connected with current transformer, and first winding and the discharging vehicle motor series connection of the current transformer enter electricity In cable road, the secondary winding of the current transformer is connected with the signal input part of advanced networks instrument, power network line voltage It is directly accessed in advanced networks instrument.