CN206569855U - A kind of mine hoist control device based on double PLC and frequency converter - Google Patents
A kind of mine hoist control device based on double PLC and frequency converter Download PDFInfo
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- CN206569855U CN206569855U CN201720274526.8U CN201720274526U CN206569855U CN 206569855 U CN206569855 U CN 206569855U CN 201720274526 U CN201720274526 U CN 201720274526U CN 206569855 U CN206569855 U CN 206569855U
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- China
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- frequency converter
- plc
- control unit
- encoder
- motor
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Abstract
The utility model discloses a kind of mine hoist control device based on double PLC and frequency converter, including step-down transformer, frequency converter, motor, reduction box, roller, material conveying trolley, lubricating oil station, hydraulic station, encoder, control unit, step-down transformer is connected through frequency converter with motor, motor is connected through reduction box with roller, roller is connected with material conveying trolley, encoder is arranged on drum shaft, encoder is connected with control unit, lubricating oil station and control unit, reduction box is connected, hydraulic station and control unit, roller is connected, control unit is connected with frequency converter.The real-time speed and position signalling of the utility model encoder collection material conveying trolley simultaneously send into control unit, control unit is according to the corresponding control signal of signal output of input to frequency converter, lubricating oil station and hydraulic station, so as to control the lifting of mine hoist, have the advantages that control accuracy is high, safe and reliable.
Description
Technical field
The utility model is related to field of mining, more particularly to a kind of mine hoist control based on double PLC and frequency converter
Device.
Background technology
Mine hoist is the visual plant in colliery, iron ore, nonferrous metals ore production process, and its course of work is mainly
Roller rotation is driven through decelerator by motor, steel wire rope winds several weeks on roller and hangs up a haul compartment arranged, in electricity
The train for filling mineral is dragged up or put down from inclined shaft under the driving of machine.This dragging system require motor continually just,
Reversion is started, retarding braking, and the rotating speed of motor changes according to certain rules.Reliability, easy to operateization, intelligent and low energy
Consumption is the direction of mine hoist development, is also directly connected to the production status and economic benefit of enterprise.
Traditional incline hoist is generally using exchange winding motor serial-resistance speed-regulation system, and the switching of resistance is connect with exchange
Tentaculum-IGCT control, because the time that A.C. contactor is acted frequently, equipment is run in speed regulation process is longer, ac contactor
Device main contact is oxidizable, so as to trigger equipment fault, and because using reduced-voltage starting, the inlet wire transformer capacity in many mining areas compared with
Small, output voltage is low, causes power frequency can not normally open car often.In addition, elevator is in deceleration and the speed control of crawling phase
Poor-performing, often causes parking spot inaccurate, and elevator is continually started, speed governing and braking, in rotor external circuit institute
The sizable power consumption of upper generation of string resistance.This exchange winding motor serial-resistance speed-regulation system belongs to step speed regulation, speed governing
Flatness it is poor；Mechanical property is softer during low speed, and static difference rate is larger；The slip power consumed on resistance is big, saves poor；Start
Rush of current is big in process and speed governing shift process；High speed operation vibrations are big, and security is poor.It can be seen that traditional mine hoist
All there is different degrees of defect in terms of security reliability, speed governing, energy-conservation, operation, maintenance in electric-control system.
The content of the invention
In order to solve the above-mentioned technical problem, the utility model provide it is a kind of it is simple in construction, safe and reliable, consume energy it is low based on
Double PLC and frequency converter mine hoist control device.
The technical scheme that the utility model solves the above problems is：A kind of mine hoist based on double PLC and frequency converter
Control device, including step-down transformer, frequency converter, motor, reduction box, roller, material conveying trolley, lubricating oil station, hydraulic station, volume
Code device, control unit, the input of the step-down transformer is connected with power distribution network, the output end of step-down transformer through frequency converter and
Motor is connected, and motor is connected through reduction box with roller, and roller is connected with material conveying trolley, and the encoder is arranged on drum shaft
On, the signal output part of encoder is connected with control unit, and the input of lubricating oil station is connected with control unit, lubricating oil station
Output end is connected with reduction box, and the input of hydraulic station is connected with control unit, and the output end of hydraulic station is connected with roller, control
Unit is connected with frequency converter.
The above-mentioned mine hoist control device based on double PLC and frequency converter also includes host computer and operating desk, host computer
It is connected respectively with control unit with operating desk.
The above-mentioned mine hoist control device based on double PLC and frequency converter also includes DC energy storage element, direct current
Energy storage unit includes buck chopper and batteries, and motor is connected through buck chopper with batteries, battery
Group is connected with frequency converter.
The above-mentioned mine hoist control device based on double PLC and frequency converter, described control unit includes PLC I and PLC
II, PLC I and PLC II is communicated to connect, PLC I respectively with frequency converter, encoder, lubricating oil station, hydraulic station, host computer, operating desk
It is connected, PLC II is connected with frequency converter, encoder, lubricating oil station, hydraulic station, host computer, operating desk respectively.
The beneficial effects of the utility model are：
1st, the utility model is provided with encoder, lubricating oil station, hydraulic station and control unit, encoder collection material conveying trolley
Speed and position signalling simultaneously send into control unit, and control unit is according to the corresponding control signal of signal output of input to frequency conversion
Device, lubricating oil station and hydraulic station, so as to control the lifting of mine hoist, with high, safe and reliable excellent of control accuracy
Point.
2nd, control unit of the present utility model is using double PLC, and during normal work, two sets of PLC put into operation simultaneously, realize
" double wire system " control and the protection of elevator, security performance are more preferable.
3rd, the utility model is provided with DC energy storage element, and DC energy storage element includes buck chopper and electric power storage
Pond group, when electric motor operation is in braking operation state, the energy of feedback is connected by buck chopper with batteries, is passed through
Batteries get up energy storage, and the direct current energy of storage can power for the DC link needed in system, particularly exist
Motor is when fast braking is needed, and this Partial DC electric energy is connected on motor reel, using DC injection braking function, energy-conservation
Effect is obvious.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is double PLC signals connection figures for including in Fig. 1 control units.
Embodiment
The utility model is further described with reference to the accompanying drawings and examples.
As shown in figure 1, the utility model includes step-down transformer, frequency converter, DC energy storage element, motor, subtracted
Fast case, roller, material conveying trolley, lubricating oil station, hydraulic station, encoder, control unit, host computer, operating desk, the downconverter
The input of device is connected with power distribution network, and the output end of step-down transformer is connected through frequency converter with motor, and DC energy storage is single
Member includes buck chopper and batteries, and motor is connected through buck chopper with batteries, batteries and frequency converter
It is connected；Motor is connected through reduction box with roller, and roller is connected with material conveying trolley, and the encoder is arranged on drum shaft, compiles
The signal output part of code device is connected with control unit, and the input of lubricating oil station is connected with control unit, the output of lubricating oil station
End is connected with reduction box, and the input of hydraulic station is connected with control unit, and the output end of hydraulic station is connected with roller, control unit
It is connected with frequency converter, host computer, operating desk.
Described control unit includes PLC I and PLC II, as shown in Fig. 2 PLC I and PLC II is communicated to connect each other, both
Between signal can mutually with and can be controlled, PLC I respectively with frequency converter, encoder, lubricating oil station, hydraulic station, upper
Machine, operating desk are connected, and PLC II is connected with frequency converter, encoder, lubricating oil station, hydraulic station, host computer, operating desk respectively.
Electric energy is depressured the 10KV voltage class of mine electric power distribution net for needed for control device of hoister by step-down transformer
380V voltages, then be connected by frequency converter with motor, it is actual that frequency converter can be changed into 380V/50Hz power frequency supply in motor
The electrical energy form needed in speed regulation process；Frequency converter is also connected with DC energy storage element, DC energy storage element and electricity
Motivation is connected, and buck chopper and batteries are included in energy storage unit, when motor is operated in braking operation state,
The energy of feedback is connected by buck chopper with batteries, and energy storage is got up, and does not use resistance consumption, storage it is straight
Stream electric energy can be that the DC link that needs be powered in system, particularly when motor is needing fast braking, can be
This Partial DC electric energy is connected on motor reel, and using DC injection braking function, energy-saving effect is obvious；Frequency converter connects with control unit
Connect, remote monitorings of the PLC to frequency converter can be achieved；Motor is connected with reduction box, and reduction box is connected with lubricating oil station, lubricating oil station
Realize the protection to reduction box；Reduction box is connected with roller, and roller is connected with encoder, material conveying trolley and hydraulic station, encoder
The real-time speed and position signalling of material conveying trolley are fed back to control unit, hydraulic station provides brake force for elevator system.
Operating desk and host computer combined running, monitoring on whole control device of hoister, the table top of operating desk has conversion to open
Close, correspondence automatic mode, manual mode, three gears of car-parking model, also have the adjustable potentiometers of high accuracy 0 ~ 10V of correspondence,
Under manual mode, Setting signal can be adjusted by the potentiometer and is adjusted to the external analog amount speed governing combination internal PID of frequency converter
Device is saved, speed governing is carried out to elevator, host computer can show the running situation, operational factor and various controls of each part of elevator
The working condition of element, can also upload to the information in the camera at each position of mine the liquid crystal of host computer
In display screen, electrical equipment, the safe operating conditions of workman of monitoring mine, more ensure that the security of operation in real time.
Control unit is mainly made up of two sets of PLC.PLC I is used as monitoring system as master control system, PLC II.Normal work
When, two sets of PLC systems put into operation simultaneously, realize " double wire system " control and protection of elevator.In order to ensure two sets of PLC systems
System can work asynchronously, and the position signalling and rate signal of two sets of PLC systems be compared in real time in PLC I, once deviation mistake
Greatly, it will alarm immediately.Two sets of PLC systems mainly carry out data exchange in a communication manner.
, then can be " emergent 1 " or " emergent 2 " if a set of PLC breaks down or the failure of its position detecting element
Under mode, worked on by singly covering PLC.When lifting car works under emergency mode, due protection, which does not have, to be lacked, and is not had simply
Have " double wire system ".But in order to ensure the security reliability of elevator operation, the speed of service is reduced to Half Speed.If two sets of positions
Detecting element is broken down, and elevator can only be run with the speed no more than 0.5m/s.
After elevator reaches purpose, in order to prevent operating personnel from failing hardware operation to zero-bit, to prevent next time from opening
Occur unnecessary unexpected situation when dynamic, set from lock unit, once motor stopping, being capable of self-locking, next time from lock unit
When startup, operating personnel to be unlocked, could carry out that next step is affected, also improve the security performance of well operations.
System occurs under abnormal conditions, and corresponding indicator lamp and LCDs display alarm content, alarm lamp can dodge
It is bright, and alarm is sent, at this point it is possible to the emergency button on push platform, it is ensured that system can power off operation immediately, still
The hydraulic system of braking motor works on DC injection braking system, prevents material conveying trolley from landslide phenomenon occur.
Claims (4)
1. a kind of mine hoist control device based on double PLC and frequency converter, it is characterised in that：Including step-down transformer, become
Frequency device, motor, reduction box, roller, material conveying trolley, lubricating oil station, hydraulic station, encoder, control unit, the downconverter
The input of device is connected with power distribution network, and the output end of step-down transformer is connected through frequency converter with motor, and motor is through reduction box
It is connected with roller, roller is connected with material conveying trolley, the encoder is arranged on drum shaft, the signal output part of encoder and control
Unit processed is connected, and the input of lubricating oil station is connected with control unit, and the output end of lubricating oil station is connected with reduction box, hydraulic station
Input be connected with control unit, the output end of hydraulic station is connected with roller, and control unit is connected with frequency converter.
2. the mine hoist control device according to claim 1 based on double PLC and frequency converter, it is characterised in that：Also
Including host computer and operating desk, host computer and operating desk are connected with control unit respectively.
3. the mine hoist control device according to claim 1 based on double PLC and frequency converter, it is characterised in that：Also
Including DC energy storage element, DC energy storage element includes buck chopper and batteries, and motor is cut through decompression
Ripple device is connected with batteries, and batteries are connected with frequency converter.
4. the mine hoist control device according to claim 2 based on double PLC and frequency converter, it is characterised in that：Institute
Stating control unit includes PLC I and PLC II, and PLC I and PLC II is communicated to connect, PLC I respectively with frequency converter, encoder, lubrication
Petrol station, hydraulic station, host computer, operating desk are connected, PLC II respectively with frequency converter, encoder, lubricating oil station, hydraulic station, upper
Machine, operating desk are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720274526.8U CN206569855U (en) | 2017-03-21 | 2017-03-21 | A kind of mine hoist control device based on double PLC and frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720274526.8U CN206569855U (en) | 2017-03-21 | 2017-03-21 | A kind of mine hoist control device based on double PLC and frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206569855U true CN206569855U (en) | 2017-10-20 |
Family
ID=60055081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720274526.8U Expired - Fee Related CN206569855U (en) | 2017-03-21 | 2017-03-21 | A kind of mine hoist control device based on double PLC and frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206569855U (en) |
-
2017
- 2017-03-21 CN CN201720274526.8U patent/CN206569855U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171020 Termination date: 20180321 |