CN201530644U - All-digital frequency converting electric control system of mine hoister - Google Patents
All-digital frequency converting electric control system of mine hoister Download PDFInfo
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- CN201530644U CN201530644U CN200920257698XU CN200920257698U CN201530644U CN 201530644 U CN201530644 U CN 201530644U CN 200920257698X U CN200920257698X U CN 200920257698XU CN 200920257698 U CN200920257698 U CN 200920257698U CN 201530644 U CN201530644 U CN 201530644U
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Abstract
The utility model discloses an all-digital frequency converting electric control system of a mine hoister, which comprises a control platform of the all-digital frequency converting electric control system of the mine hoister. The control platform is respectively connected to a mine hoister external sensor, a motor speed sensor, a guide pulley encoder, a frequency converting speed regulating cabinet, a brake system and a lubricating system; a low voltage feeding cabinet is respectively connected to the control platform, the frequency converting speed regulating cabinet, the brake system and the lubricating system; the frequency converting speed regulating cabinet is connected to a motor; and an encoder set and a depth indicating sensor which are installed on the motor are respectively connected to the frequency converting speed regulating cabinet and the control platform. The electric control system has the advantages of capability of leading running of a hoister in controlled state all along, complete protection functions to lead the running process of the hoister to be safe and reliable, strong control function with precise and reliable control process, simplified devices to increase cost performance, and capability of completely substituting existing alternating current electric control systems of hoisters.
Description
Technical field
The utility model relates to a kind of control system of mining elevator, relates to a kind of frequency control electric-control system of mining elevator specifically.
Background technology
At present the used electric-control system great majority of mining elevator are to exchange electric-control system, and we describe the operational process of gig with Fig. 1, Fig. 2 and Fig. 3, and Fig. 1 is the velocity diagram of gig, also is six sections figure, is commonly called as the control artwork.Fig. 3 exchanges automatically controlled system schematic.Automatically controlled by the present as can be seen ac elevator of Fig. 3 and Fig. 1 is " step speed regulation ", whenever cutting electric current that one-level resistance all can cause electrical motor has the variation of " platform valency " formula, the one-level step has only drawn among Fig. 1, cut resistance what is arranged, what velocity variations step is just arranged in the velocity diagram, cause once " impact " to equipment such as motor shaft, gig, steel ropes therefrom.In this control system, the method of cutting resistance is that " the main order " pushes away one-level forward or backward on the operator's station, resistance is with regard to cut one-level, push away one-level more forward or backward, resistance is cut one-level again just, until cutting, this process is the operation that " step " formula is arranged, or the operation of " step " formula is arranged, this control does not realize the requirement to speed " continuously " control, particularly will " cut off the power supply " when dynamic brake, make it the stage of one " get out of hand ", operation has had unsafe hidden danger to gig.
With Fig. 3 is example, the specific operation process that exchanges electric-control system is as follows: start: at present, exchange wound-rotor motor rotor series resistance speed control system, what generally use is to cut eight sections resistance, what some was used is to cut five sections resistance, cries " eight sections speed governing " or " five sections speed governing ".When the gig ground zero, the starting current of motor is 5 to 7 times of its rated current, all resistance are all gone here and there in the rotor loop, to reduce starting current to electrical network or to the impact of equipment, this process shows among Fig. 3 it is that all resistance is all added rotor loop, the three grades of resistance that only drawn among this figure, and 1KM, 2KM, 3KM are in open-circuit condition, be " just quickening " section in velocity diagram 1,1 to 5 second used time was not waited.
Along with the starting of motor and the rising of speed, the resistance of string in rotor is also wanted the excision of one-level one-level, and by control requirement difference closure, behind the resistance complete resection, motor also reaches command speed, and moves with rated current as the 1KM among Fig. 3,2KM, 3KM.This process shows in the velocity diagram it is " accelerating sections ", and the used time is different because of power of motor, and the accelerating sections time spent of the motor that has is more than tens seconds.
Slow down: after gig moves to deceleration point, control system should make its deceleration, the method that exchanges the electric-control system use is to cut off main circuit power, when the induced voltage in the coil is lower than certain value, again direct supply is fed motor, rotating speed of motor is descended rapidly, when dropping to certain value, disconnecting direct supply again, insert main circuit power, is exactly braking section among the last now figure of this procedure body.
Creep: after Hoist Speed lowers, enter the section of creeping, run to well head (generally being to move rice even longer distance surplus in the of ten) under the speed of regulation and under the distance exactly and stop, enter stop segment with the speed of 0.5 meter per second.
Control to lock also is like this, because be relay logic control, so can only be " connection " or " disconnection ", just can't realize for the KT coil on the Hydraulic Station in the brake system or the continuous control of ratio coil requirement, the result is that all locks also can only " be held tightly " and " unclamping ", and the strength of lock can not get regulating.
What is more, and the winch that has directly uses mechanical brake, and at the needs glancing impact, hoistman is operated a switch with artificial strength, and what brake rubber block was rubbed smolders, and this system causes pulleying easily, overruns, and runs into emergency situation and have little time to operate a switch at all.
Need to prove, in this system, use be that tachogenerator is measured Hoist Speed, gig operation fast more, the voltage of tachogenerator output is high more, gig operation slow more, the voltage of output is low more.
The characteristic of this tachogenerator exists non-linear section as shown in Figure 2, promptly during ground zero and during rated speed of rotation, exist non-linear, after oa section and b section among the figure,, make speed control that uncertain factor arranged so can not be reflected in the interior actual speed in this zone really.
In sum, the defective of mining hoist electric-control system existence at present has as follows:
From secure context: a, drop between dynamic brake or dynamic brake tailend and have dead band; B, serial-resistance speed-regulation switch with contactless switch, burn the contact easily; C, startup and resistance switch when quickening, and steel rope, gig are impacted; Circuit and joint are burnt in d, a large amount of heating easily;
From controller performance aspect: a, the operation not steady, poor stop.B, belong to step speed regulation, low speed torque is little, and slip power is big; C, control circuit complexity, contactless switch, resistor, coiling electric motor brush etc. damage easily, cause the fault rate height thus, and maintenance load is big; D, secondary cause gig production efficiency low for factors such as electricity, mechanical braking, parking are inaccurate; E, electricity wasting, heating, big, the serious environment pollution of noise, floor area is big;
From system composition aspect: the composition that exchanges electric-control system: a, interchange electric-control system mainly are made up of following equipment: control panel, constant voltage power suspply, signal cabinet, given cabinet, degree of depth indication sensor, back-up protection cabinet, operator's station, tachogenerator, electric braking cabinet, feeder cabinet, commutation cabinet, magnetic force station etc.; B and at present smaller ore deposit electric-control system equipment is formed: operator's station, control panel, back-up protection cabinet, degree of depth indication sensor, electric braking cabinet (many ore deposits are this equipment not, but replaced with mechanical rim brake) and the cabinet etc. that commutates.C, dc controlled system equipment are formed: except that the listed equipment of a item, also will increase rectifier power source, smoothing reactor etc.
Summary of the invention
The purpose of this utility model just is to overcome above-mentioned defective provides a kind of mining elevator digital frequency conversion electrical control system, and it is complete to make that the operation of gig is in the slave mode defencive function always, makes that the gig operational process is safe and reliable.And controllable function of the present utility model is powerful, control process is accurately reliable, gig has been realized speed and current double closed-loop control, the safety brake and the work lock of gig have also been realized closed loop control, gig is operated steadily, speed can be level and smooth adjusting, in the whole service process, do not have noise, the phenomenon of generating heat do not occur,, can not realize smooth running to the impact phenomenon of equipment.
The purpose of this utility model can be achieved through the following technical solutions:
The digital frequency conversion electrical control system of a kind of mining elevator, comprise the digital frequency conversion electrical control system control desk of mining elevator, the digital frequency conversion electrical control system control desk of mining elevator respectively with the mining elevator external sensor, motor speed sensor, the track adjusting wheel coder, the frequency control cabinet, brake system, lubricating system connects, low voltage feeder cabinet respectively with the digital frequency conversion electrical control system control desk of mining elevator, the frequency control cabinet, brake system is connected with lubricating system, the frequency control cabinet is connected with motor, be installed on the motor the coder group with refer to that deeply sensor is connected with the digital frequency conversion electrical control system control desk of frequency control cabinet and mining elevator respectively.
The digital frequency conversion electrical control system of above-mentioned mining elevator, described frequency control cabinet is the four-quadrant frequency variation speed regulating cabinet.
The digital frequency conversion electrical control system of above-mentioned mining elevator, described frequency control cabinet are single quadrant frequency control cabinet, and single quadrant frequency control cabinet is connected with braking resistor cubicle.
The digital frequency conversion electrical control system of above-mentioned mining elevator, when mining elevator or winch operation, the run signal of sending according to the signalman, PLC in the control desk is to received signal and detect the conditioned signal that all allow operation, if safety condition possesses, then PLC control safety return circuit powers on, and the safety return circuit indicator lamp is bright, and the driver drives to operate by main order on the control desk and rim brake again.After the driver pushes to main order and opens rim brake, PLC in the control desk carries out computing to the signal that the master makes and rim brake sends, and draws the degree of lock folding and the speed of main order permission, and Hydraulic Station is passed in the instruction of control sluice, speed command is passed to frequency conversion tank, with the operation of control gig.In the operational process, be installed on the motor shaft and gig or winch drum on sensor speed signal is input to programmable logic controller (PLC) PLC, the PLC operation calculates the deceleration point in the internal end of travel, accomplish the control of gig or winch and motor two-way, when gig or winch run to deceleration point, be installed in the pit shaft or degree of depth indication sensor on the deceleration point sensor give programmable logic controller (PLC) PLC input a restriction signal, programmable logic controller (PLC) PLC slows down motor by AD and DA modular converter control converter plant.
Adopt technique scheme, the utility model is by following advantage,
A, can replace the ac elevator electric-control system that using at present fully.Solved the safety hazard that exists in the present ac elevator electric-control system fully: make the operation of gig be in slave mode, defencive function is complete always, makes that the gig operational process is safe and reliable.Remove speed adjusting resistance fully, the element that also no longer includes contactless switch and so on participates in control process;
B, improve controllable function: controllable function is powerful, and control process is accurately reliable, and gig has been realized speed and current double closed-loop control, safety brake and work lock to gig have also been realized closed loop control, gig is operated steadily, the adjusting that speed can be level and smooth, as shown in Figure 3:
Oa is starting section, and this section can slowly begin, and continuous in the level and smooth raising speed of 0 speed, the electric current of motor also is to increase slowly by 0, and torque also is to be increased slowly by 0 beginning, the raising speed of step no longer occurs, can not impact to equipment again.The bc section is a transition phase, can make rising rate smoothing carry out the transition to the constant speed section.The de section be constant speed level and smooth carry out the transition to braking section, f slows down for slowing down later on, until to zero-speed, realizes steadily stopping.
Do not need convert resistance in the boosting velocity procedure, decide the rising of rotating speed fully by the frequency of power supply from small to large, realize level and smooth continuous control.
Moderating process also no longer drops into dynamic brake, does not also need secondary to give electricity, but is determined from big to small the reduction of rotating speed to realize level and smooth continuous reduction of speed by power frequency.
In the whole service process, do not have noise, the phenomenon of generating heat do not occur, to the impact phenomenon of equipment, can not realize smooth running, this does not realize in relay logic control.
Owing to the start-up course of motor having been avoided full voltage, so this procedure section electric weight can reach more than 15%, this does not realize in relay logic control.
C, simplified apparatus, improve cost performance:
Select performance-oriented drive apparatus and electric power components and parts for use;
Adopt the constructional simple design after optimizing;
Adopt software to realize the controllable function that requires as far as possible;
Realize the design-calculated safety protection function fully;
Easy and simple to handle, automation promotes the efficient height, and fault rate is low, easy maintenance;
Not only can control the interchange wound-rotor motor, use in a large number at present, because of capacity big, complex structure is so the price height eliminates speed adjusting resistance, and can control the squirrel-cage alternating-current motor/AC motor, and need not increase any spare part, can obtain the same control effect.
D, can replace the ac elevator electric-control system that using at present fully.
Description of drawings
Fig. 1 is that existing mining elevator exchanges automatically controlled system speed scheme drawing;
Fig. 2 is the graph of relation that existing mining elevator exchanges tachogenerator speed and output voltage in the electric-control system;
Fig. 3 is that existing mining elevator exchanges automatically controlled system schematic;
Fig. 4 is the digital frequency conversion electrical control system speed of a utility model mining elevator scheme drawing;
Fig. 5 is the digital frequency conversion electrical control system hardware configuration of the utility model mining elevator;
Fig. 6 is the another kind of hardware configuration of the digital frequency conversion electrical control system of the utility model mining elevator;
Fig. 7 is the digital frequency conversion electrical control system circuit block diagram of the utility model mining elevator;
Fig. 8 is the circuit block diagram of the digital frequency conversion electrical control system control desk of the utility model mining elevator;
Fig. 9, Figure 10 and Figure 11 combine and are the schematic circuit diagram of control desk in the digital frequency conversion electrical control system of the utility model mining elevator.
The specific embodiment
As Fig. 4, Fig. 5, Fig. 6 and the digital frequency conversion electrical control system of a kind of mining elevator shown in Figure 7, comprise the digital frequency conversion electrical control system control desk of mining elevator, the digital frequency conversion electrical control system control desk of mining elevator respectively with the mining elevator external sensor, motor speed sensor, the track adjusting wheel coder, the frequency control cabinet, brake system, lubricating system connects, low voltage feeder cabinet respectively with the digital frequency conversion electrical control system control desk of mining elevator, the frequency control cabinet, brake system is connected with lubricating system, the frequency control cabinet is connected with motor, be installed on the motor the coder group with refer to that deeply sensor is connected with the digital frequency conversion electrical control system control desk of frequency control cabinet and mining elevator respectively, external sensor comprises and is installed in motor shaft, on the drum shaft and head sheave on shaft encoder, the axis signal sensor, these are also referred to as speed sensor, be installed in the magnetic induction switch in the pit shaft or on the derrick, be also referred to as position transduser, refer to that deeply sensor is contained on the depth indicator, be installed in the pressure transformer on the Hydraulic Station, be installed in pressure transformer and temperature sensor in the lubrication station.
The digital frequency conversion electrical control system of mining elevator as shown in Figure 5, described frequency control cabinet is the four-quadrant frequency variation speed regulating cabinet.
The digital frequency conversion electrical control system of mining elevator as shown in Figure 6, described frequency control cabinet are single quadrant frequency control cabinet, and single quadrant frequency control cabinet is connected with braking resistor cubicle.
As Fig. 8; Fig. 9; Figure 10 and the digital frequency conversion electrical control system control desk of mining elevator shown in Figure 11 comprise programmable logic controller (PLC) PLC; programmable logic controller (PLC) PLC respectively with the comprehensive detection module; guidance panel; indication panel; system parameter summary display and control module; the language alarm module; the relay modular converter; the lock control module; AD and DA modular converter connect; the relay modular converter is connected with the contactless switch group; emergent hoisting module is connected on the relay modular converter; the lock control module is connected with the contactless switch group with AD and DA modular converter respectively; the comprehensive detection module is connected with the mining elevator external sensor; in the frequency control cabinet RHVC is set; RHVC respectively with programmable logic controller (PLC) PLC; the relay modular converter is connected with AD and DA modular converter; main motor is connected on the RHVC; main motor speed sensor is connected with programmable logic controller (PLC) PLC; RHVC respectively with programmable logic controller (PLC) PLC; the lock control module is connected with AD and DA modular converter; emergent hoisting module respectively with the lock control module; the frequency control cabinet; the relay modular converter; programmable logic controller (PLC) PLC is connected with AD and DA modular converter; comprehensive protection module is connected with programmable logic controller (PLC) PLC; programmable logic controller (PLC) PLC comprises main PLC and prison machine PLC; main PLC is connected with main motor speed sensor with the mining elevator external sensor respectively; prison machine PLC is connected with main motor speed sensor with the mining elevator external sensor respectively; in mining elevator or winch operational process; be installed on the motor shaft and gig or winch drum on sensor speed signal is input to programmable logic controller (PLC) PLC; the PLC operation calculates the deceleration point in the internal end of travel; accomplish the control of gig or winch and motor two-way; when gig or winch run to deceleration point; be installed in the pit shaft or degree of depth indication sensor on the deceleration point sensor give programmable logic controller (PLC) PLC input a restriction signal, programmable logic controller (PLC) PLC slows down motor by AD and DA modular converter control converter plant.
The digital frequency conversion electrical control system of mining elevator (device) is made up of (as shown in Figure 5 two equipment, be four-quadrant frequency converter), or form (as shown in Figure 6, being single quadrant frequency converter) by three equipment: among Fig. 5, electric-control system is to be become by operator's station, four-quadrant frequency variation speed regulating group.Among Fig. 6, electric-control system is made up of operator's station, single quadrant frequency control cabinet, braking resistor cubicle.
Digital control desk is the major equipment in the digital frequency conversion electrical control system of mining elevator (device), is made up of industrial computer, man-machine interface, sensor, input-output equipment, power element etc.Industrial computer is the PLC of control desk, and radical function is according to incoming signal, as calculated the every controllable function of back output; Man-machine interface is used to show every operational factor of gig and electric-control system; Sensor comprises shaft encoder and axis signal sensor, also comprises the inductive switch of being made up of Hall element and magnet contactor, also comprises speed sensor of mentioning in the utility model etc.; Safety return circuit control comprises comprehensive detection module, language alarm module and lock control module; Expansion input, output module and the AD of PLC and DA modular converter, relay modular converter are input/output modules; Guidance panel, indication panel, and the mechanism of equipment such as modulated pressure station, lubrication station, power supply be power element.
The radical function of control desk is to satisfy the requirement of mining elevator to controllable function.
(1); perfect monitoring and protection; content is: speed protection such as constant speed section are overrun; braking section is overrun; near the parking stall speed limit; given abnormal protection; stroke protection as outside overtravel protection distance; inner overtravel protection distance; shaft encoder damages protection; reversal protection time or speed; system protection such as rope creep protection; brake block abrasion; refer to fail safe deeply; the brake noise overvoltage protection; the lubricating oil under-voltage protection; system's supplementary protection is as the main zero-bit that makes; the lock zero-bit; ride and tightly stop; stop signal protection over current of motor; the brake noise overtemperature; the lubricating oil overtemperature; other protection is as two stage braking; the pulleying switch protecting; power-transfer clutch breaks away from protection; the protection of coal position, monitoring is as motor speed; output frequency; vdc; outgoing current; output voltage; the torque value of motor; torque current; the input of frequency converter; horsepower output; the PID given value; value of feedback; deviate; digital quantity; the input of analog quantity; output state etc.
(2), perfect operating order, content is: safety return circuit, sending dotter signal, given speed (stroke), pressure (temperature), stop, overhaul, carry the people, carry thing, manual, automatic etc.
In the digital frequency conversion electrical control system of mining elevator (device), all controllable function and semiotic function concentrate in the design-calculated control desk (or be operator's station, or be main console desk), can remove signal cabinet in traditional electric-control system, control panel etc. fully;
In this control desk; adopt two advanced persons' import industrial computer (PLC); pass through program; various relays such as time relay in traditional electric-control system have been substituted; speed relay; directional relay; the misorientation relay; signal relay; current relay; voltage relay or the like; not only can be by the logic control of program realization to gig; but also can be by the level and smooth continuous control of D/A converter module realization to Hydraulic Station output brake-pressure; realized safety arrestment by lock control system software; also realized in " safety regulations in coal mine " requirement to safety return circuit independence two wire system; as pulleying; 15% hypervelocity; the deceleration overspeed protection; 2m/s well head speed limit etc.; defencive function is by executing the lock sudden stop immediately; at first slow down and then sudden stop by setting deceleration/decel; finish not allowing to drive once more promptly once to promote three class settings after this promotes, can remove the back-up protection equipment in the existing system fully.
By axis signal sensor and coder and industrial computer, real-time monitoring and control have been realized to Hoist Speed.
The axis signal encoder applies is made on last and the rim brake to leading of operator's station, realized digitized stroke given function, accuracy of positioning≤2cm, realized Digital Control to rim brake, traditional cam-type master's order and rim brake have been removed, so thoroughly changed the given and switching regulator rim brake of traditional switching regulator, realized digitized to Hoist Speed with to the control of gig lock.
Axis signal sensor and encoder applies are detected to stroke and speed, realized accurate stroke of gig and speed control by industrial computer.
The fault self-diagnosis function of main control computer has been realized " self check " to breakdown of equipment, and passes through the fault of the form reporting system generation of voice, makes that the maintenance of equipment is easy and quick.
The plane computations machine is applied in this system, realized to the demonstration of gig various signals in service and parameter such as gig running velocity, skip bucket position, service direction, current of electric voltage, hoist hook number, fault memory, get number of times or the like ready, realize man-machine communication.
Pass through industrial computer; can also realize the closed loop control of adjustable lock; the total travel speed protection; can also accurately provide position signals such as deceleration point, pulleying point, releasing two stage braking point; and protection is used in support; control system can cooperate hydraulic brake system to realize two stage braking under the power-off condition of full ore deposit, the reliable parking.
Can be to monitoring and defencive functions such as motor temperature detection, brake block abrasion and spring fatigues.
By control desk, gig can realize under driver's operation manually, automatically, S. A., overhaul, carry the people, propose the thing operation.
Can realize sudden stop automatically: when faults such as generation power failure, can realize that automatic emergency stops.
Can realize emergent the lifting: detect and fault is arranged and hardware when not having the fault of connection when partial failure or system controlling software appear in monitoring system, can be by emergent driving system with this end of run.
Adjust in the cabinet in frequency conversion, adopt performance-oriented electric actuator: adopt vector controlled type frequency converter (frequency changing power device) as power supply, drive mouse cage AC formula electrical motor or phase-wound rotor alternating-current motor/AC motor.
Converter plant has the branch of single quadrant and four-quadrant, and single quadrant converter plant contains braking resistor cubicle, and the four-quadrant converter plant does not contain braking resistor cubicle.When four-quadrant frequency converter promoted in the negative power of gig, the electric energy that electrical motor can be sent fed back to electrical network, single quadrant frequency converter frequency converter then can not, can only form the loop by " braking resistor cubicle ", dissipate the electric energy that electrical motor sends and form braking torque.
No matter be single quadrant frequency converter or four-quadrant frequency converter, all can be achieved as follows function by native system:
By the control signal that operator's station provides, can realize that " S " starts protecting against shock speed, and the speed setting precision reaches more than 1: 100.
Can realize that with this device 150% torque rating zero velocity starts.
Can realize PID speed and current double closed-loop control with this device.
Working process of the present utility model is as follows:
1, main PLC and monitoring PLC detect the external sensor state respectively separately.Main PLC and monitoring PLC carry out logic operation to outside sensor states respectively, if meet the requirement of safety condition, main PLC and monitoring PLC import a signal (safety condition possesses) separately.
2, two safety signal series connection of main PLC and monitoring PLC insert safety relay line bag control loop, press the safety relay start button, the safety relay adhesive.
3, return to signal of main PLC, driving conditions being possessed after the safety relay adhesive.
4, push away master controller, give the impulse singla of PLC respective numbers, after the PLC internal data is handled,, be sent to frequency converter by the output of DA module by the coder on the master controller, thus the operation of control frequency conversion.
5, pushing hands brake controller is given the impulse singla of PLC respective numbers by the coder on the rim brake controller, after the PLC internal data is handled, export by the DA module, be sent to the lock control module, the 4-20mA current transformation is become 0-1000mA solenoid control electric current, the control brake disc is opened a sluice gate and the band-type brake degree.
6, given behind PLC at master controller and brake controller pulse, calculate through PLC is inner accurate, to frequency converter and brake system make chronologically, size, direction etc. control given.
7, after gig or winch bring into operation, the impulse singla that PLC returns by the coder that is installed on gig (or winch) cylinder and the motor shaft, can draw the instantaneous velocity of winch as calculated, parameters such as instantaneous acceleration, instant direction, instant travel position and inner deceleration point, inside put in place, inner pulleying, the inside section of creeping, inner braking section directly show on HMI (man-machine interface) simultaneously immediately.
8, when gig or winch run to deceleration point, the deceleration point sensor that is installed in (or on degree of depth indication sensor) in the pit shaft is given restriction signal of PLC, and PLC slows down motor by DA module controls frequency converter.
9, in gig or winch operational process, the impulse singla that PLC returns by the coder that is installed on cylinder and the motor shaft in real time calculates the deceleration point in the internal end of travel, accomplishes the control of deceleration point two-way.
10, frequency converter obtain the PLC deceleration control given after, the process that reduces speed now, the pulse output signals that is installed in the coder on cylinder and the motor shaft simultaneously turns back to PLC, to the given rectification of frequency conversion, forms the control closed loop.
11, under PLC control, Frequency Converter Control is to motor section of creeping and the requirement of satisfying creeper speed.
When 12, putting in place, the outside action (which is action earlier, and based on which signal, two-way is independent) that puts in place to level sensor and PLC inside, the parking of PLC control frequency converter, and control sluice system band-type brake.
13, stop.Beginning promotes next time.
14, overtravel protection: pulleying switch on well head or shaft bottom pulleying switch, the degree of depth indication sensor and the inner pulleying output of PLC series connection are inserted safety return circuit, when the pulleying signal takes place three sensors any, fall safety return circuit, the urgent band-type brake of brake system.
15, the rope pine detects: detected by external sensor by the comprehensive detection module and turn back to PLC control.
16, the coal position is detected: detected by external sensor by the comprehensive detection module and turn back to PLC control.
17, electric moter voltage detects: detected by external sensor by the comprehensive detection module and turn back to PLC control.
18, braking oil pressure: turn back to PLC control by the pressure transformer detection by the AD module.
19, brake noise temperature: turn back to PLC control by the external temperature sensor detection by the comprehensive detection module.
20 brake block abrasions: turn back to PLC control by outside brake shoe detecting sensor detection.
21, lubrication pressure: turn back to PLC control by the pressure transformer detection by the AD module.
22, sliding rope detects: by being installed in the pulse count that coder on track adjusting wheel and the motor shaft turns back to PLC, judge whether sliding rope after PLC calculates.
23, speed detects: returned by the pulse that is installed in the coder on track adjusting wheel or cylinder and the motor shaft, calculate through PLC, instantaneous velocity at that time.
24, position probing: return by the pulse that is installed in the coder on track adjusting wheel or cylinder and the motor shaft, calculate, present position at that time through PLC.
25, coder principle: inside is circular code-disc of grating type and precise light electric inductor, by rotation code-disc, photoelectric sensor output pulse signal.
26, magnetic switch principle: inside is dry-reed tube or Hall unit, outside strong magnetic trigger action, output conducting or level signal.
27, speed sensor principle: inside is two Hall units, outside strong magnetic trigger action, the level signal of output out of phase.
28, emergent hoisting module effect: under the situation that PLC breaks down, bypass PLC, realize M/C, with cage or skip bucket security improvement to well head or shaft bottom.
Claims (3)
1. digital frequency conversion electrical control system of mining elevator, it is characterized in that: comprise the digital frequency conversion electrical control system control desk of mining elevator, the digital frequency conversion electrical control system control desk of mining elevator respectively with the mining elevator external sensor, motor speed sensor, the track adjusting wheel coder, the frequency control cabinet, brake system, lubricating system connects, low voltage feeder cabinet respectively with the digital frequency conversion electrical control system control desk of mining elevator, the frequency control cabinet, brake system is connected with lubricating system, the frequency control cabinet is connected with motor, be installed on the motor the coder group with refer to that deeply sensor is connected with the digital frequency conversion electrical control system control desk of frequency control cabinet and mining elevator respectively.
2. the digital frequency conversion electrical control system of mining elevator according to claim 1 is characterized in that: described frequency control cabinet is the four-quadrant frequency variation speed regulating cabinet.
3. the digital frequency conversion electrical control system of mining elevator according to claim 1 is characterized in that: described frequency control cabinet is single quadrant frequency control cabinet, and single quadrant frequency control cabinet is connected with braking resistor cubicle.
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| CN103193072A (en) * | 2013-03-28 | 2013-07-10 | 山西潞安矿业(集团)有限责任公司 | Programmable logic controller (PLC) controller control circuit |
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| CN106597985A (en) * | 2017-01-19 | 2017-04-26 | 江苏师范大学 | Gate control failure monitoring protection device and control method |
| CN107601192A (en) * | 2017-11-03 | 2018-01-19 | 中信重工开诚智能装备有限公司 | A kind of design protection of mining elevator electric control gear |
| CN112441488A (en) * | 2020-11-24 | 2021-03-05 | 新巴尔虎右旗荣达矿业有限责任公司 | Elevator operation control device of multi-level friction lifting system |
-
2009
- 2009-10-29 CN CN200920257698XU patent/CN201530644U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491141A (en) * | 2011-11-08 | 2012-06-13 | 山东科邦自动化工程有限公司 | Programmable logic controller (PLC) redundancy control device for alternating current variable-frequency hoister |
| CN102491141B (en) * | 2011-11-08 | 2013-11-20 | 山东科邦自动化工程有限公司 | Programmable logic controller (PLC) redundancy control device for alternating current variable-frequency hoister |
| CN103377570A (en) * | 2012-04-28 | 2013-10-30 | 苏州萃智新技术开发有限公司 | Winch simulating operation system |
| CN103193071A (en) * | 2013-03-28 | 2013-07-10 | 山西潞安矿业(集团)有限责任公司 | Automatic control system of coal feeder of inclined shaft belt conveyor |
| CN103193072A (en) * | 2013-03-28 | 2013-07-10 | 山西潞安矿业(集团)有限责任公司 | Programmable logic controller (PLC) controller control circuit |
| CN106597985A (en) * | 2017-01-19 | 2017-04-26 | 江苏师范大学 | Gate control failure monitoring protection device and control method |
| CN107601192A (en) * | 2017-11-03 | 2018-01-19 | 中信重工开诚智能装备有限公司 | A kind of design protection of mining elevator electric control gear |
| CN112441488A (en) * | 2020-11-24 | 2021-03-05 | 新巴尔虎右旗荣达矿业有限责任公司 | Elevator operation control device of multi-level friction lifting system |
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