CN105302052B - A kind of mining elevator electric control gear system and control method - Google Patents
A kind of mining elevator electric control gear system and control method Download PDFInfo
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- CN105302052B CN105302052B CN201510649798.7A CN201510649798A CN105302052B CN 105302052 B CN105302052 B CN 105302052B CN 201510649798 A CN201510649798 A CN 201510649798A CN 105302052 B CN105302052 B CN 105302052B
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005065 mining Methods 0.000 title claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000004224 protection Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000002828 fuel tank Substances 0.000 description 2
- 238000011022 operating instruction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/02—Rod or cable suspensions
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/14—Plc safety
- G05B2219/14006—Safety, monitoring in general
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- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Elevator Control (AREA)
Abstract
Operation control, given frequency converter frequency, the control of work lock, emergency lock control and double wire system control are rotated and reverse the invention discloses a kind of mining elevator electric control gear system and control method, including elevator motor.By the PLC controls rotated and reverse to frequency converter the forward and backward of motor is controlled to realize, the control to motor operation speed is completed by PLC controls the frequency of frequency converter to give.In the case of normal work, the control of braking moment is completed by brake handle, in emergency circumstances using safety arrestment, safety arrestment is divided into two stage braking control and one-level control for brake.The system is worked simultaneously using two sets of PLC, the operation of control elevator that can be safe and reliable, effectively improves production efficiency.
Description
Technical field
The present invention relates to mine hoist control panel field, specifically a kind of mining elevator electric control gear system
And control method.
Background technology
Mine hoist system by hoisting container, boom hoist cable, roller, decelerator, derrick and loading and unloading equipment and
Dragging motor, control panel and brake apparatus etc. are constituted.Elevator is responsible for carrying material and carries people as main transporting equipment, right
Mine efficiently, safety in production there is extremely important effect with economical operation, its acceleration in the process of running, deceleration with
And the stroke and last parking spot in each operation phase have accurate require and strict limitation.With coal in China work
The development of industry, has up to ten thousand ac elevators in operating, which part equipment is by adjusting manually in national colliery at present
Control, without any protection system, security performance is very poor, easily occurs " driving " accident；Equipment component is dynamic by input when stopping
Dynamic braking is completed, when using dynamic braking, if braking moment is not enough, and will go wrong can not even stop, to peace
Full production causes a hidden trouble.Therefore, operation, braking and the reasonable control of each association auxiliary equipment to mine hoist is particularly weighed
Will, to ensureing that production, safety and the benefit of mine are significant.
The content of the invention
In order to solve the above technical problems, the invention discloses a kind of mining elevator electric control gear system and control method,
Purpose is provided safeguard for mine hoist safety production, raising efficiency.
The technical solution adopted by the present invention is：A kind of mining elevator electric control gear system and control method, its feature exist
In：The electric control gear system by motor forward and backward operation control, frequency converter frequency given, the control of work lock, emergency lock control and
Double wire system controls five parts composition.
Motor forward and backward operation control section includes：First PLC（101）, the 2nd PLC（102）, relay one（ 103
）, relay two (104), frequency converter（105）, motor（106）；First PLC（101）The first output point（1011）With second
PLC（102）The first output point（1021）With relay one（103）Control coil（1031）Connection, relay one（103）'s
Normally opened contact（1032）With frequency converter（105）Rotating forward control port（1051）Connection, the first PLC（101）The second output point
（1012）With the 2nd PLC（102）The second output point（1022）With relay two（104）Control coil（1041）Connection, after
Electrical equipment two（104）Normally opened contact（1042）With frequency converter（105）Reversion control port（1052）Connection, frequency converter（105）
Drive output（1053）With motor（106）Connection.
The given part of frequency converter frequency includes：First PLC（101）, the 2nd PLC（102）, frequency converter（105）.First PLC
（101）Analog output channel（1013）With the 2nd PLC（102）Analog output channel（1023）With frequency converter（105）
Frequency given side（1054）Connection.
Work lock control section includes：Brake handle（301）, work lock control panel（302）, the normally opened contact of relay three
（303）, hydraulic station（304）.Brake handle（301）Connect work lock control panel（302）Input（3021）, work lock control
Plate（302）Output end（3022）Via the normally opened contact of relay three（303）Connect hydraulic station（304）Proportional pressure control valve
（305）.
Emergency lock control section includes：The normally opened contact of relay four（401）, the time relay（402）, magnetic valve one
（403）, magnetic valve two（404）, magnetic valve three（405）, the first PLC（101）, the 2nd PLC（102）, relay six（406）.After
The normally opened contact of electrical equipment four（401）One end is connected with the positive and negative power supply of system, the other end and the time relay（402）Control coil
（4021）Connection, the time relay（402）Control coil（4021）Again with magnetic valve one（403）Connection, system negative supply is same
When be connected to magnetic valve two（404）With magnetic valve three（405）, system positive supply is via the time relay（402）Contact
（4022）With relay six（406）Normally-closed contact（4063）It is connected to magnetic valve two（404）, the time relay（402）Contact
（4022）The other end and magnetic valve three（405）Connection, system positive supply is via relay six（406）Normally opened contact（4062）
It is connected to magnetic valve three（405）, the first PLC（101）The 4th output point（1014）With the 2nd PLC（102）The 4th output point
（1024）It is connected to relay six（406）Control coil（4061）.
It is as follows that the present invention also provides a kind of control method of mining elevator electric control gear system：
The core of mining elevator electric control gear system is PLC, and system control method includes motor forward and backward and runs control
System, the frequency of frequency converter are given, work lock is controlled, emergency lock is controlled and double wire system control.
The operation control of motor forward and backward：The control rotated and reverse of frequency converter is realized to motor just by PLC
Reversion control.
Frequency converter frequency gives：The control to motor operation speed is completed by PLC controls the frequency of frequency converter to give.
Work lock control：In the case of normal work, the control of braking moment is completed by brake handle, duty is reached
Dynamic purpose.
Emergency lock is controlled：Safety arrestment is completed when occurring accident, belongs to brake hard, is divided into two stage braking control and one
Level control for brake.Two stage braking is that braking moment is applied on brake disc in two times when occurring emergency, i.e., progressively will braking
Torque is applied on brake disc.One-level braking is exactly once to be applied to braking moment on brake disc, is also referred to as with respect to for two stage braking
Released for two stage braking.When one-level is braked, because braking moment is once to be applied on brake disc, necessarily there is impact to system.Cause
And, lower, i.e., just braked when hoisting container is already close to well head using one-level in the speed of hoisting container.
Double wire system is controlled：The present invention is using two sets of PLC controls, and in normal work, two sets of PLC work simultaneously, two sets of guarantors
Shield is acted simultaneously, to improve the security of system.When the peripheral circuit corresponding to the first PLC includes it goes wrong, by the
Two PLC complete driving function.
The beneficial effect that technical scheme that the present invention is provided is produced is：The operation of control elevator that can be safe and reliable, fortune
Once going wrong in row, it can safely stop rapidly, prevent accident from further expanding, production efficiency can be effectively improved.
Brief description of the drawings
Fig. 1 is motor positive and inverse control principle drawing.
Fig. 2 is that frequency converter frequency gives schematic diagram.
Fig. 3 is work lock control principle drawing.
Fig. 4 is emergency lock control principle drawing.
101. the oneth PLC in figure, 102. the 2nd PLC, 103. relays one, 104. relays two, 105. frequency converters, 106.
Motor, 301. brake handles, 302. work lock control panels, the normally opened contact of 303. relay three, 304. hydraulic stations, 401. relays
Four normally opened contacts, 402. time relays, 403. magnetic valves one, 404. magnetic valves two, 405. magnetic valves three, 406. relays
Six.
Embodiment
Technical scheme is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
The electric control gear system is by motor forward and backward operation control, given frequency converter frequency, the control of work lock, emergency lock
Control and double wire system control five parts composition.
As shown in figure 1, motor forward and backward operation control section includes：First PLC（101）, the 2nd PLC（102）, relay
Device one（ 103 ）, relay two (104), frequency converter（105）, motor（106）；First PLC（101）The first output point
（1011）With the 2nd PLC（102）The first output point（1021）With relay one（103）Control coil（1031）Connection, after
Electrical equipment one（103）Normally opened contact（1032）With frequency converter（105）Rotating forward control port（1051）Connection, the first PLC（101）
The second output point（1012）With the 2nd PLC（102）The second output point（1022）With relay two（104）Control coil
（1041）Connection, relay two（104）Normally opened contact（1042）With frequency converter（105）Reversion control port（1052）Even
Connect, frequency converter（105）Drive output（1053）With motor（106）Connection.
When elevator is lifted（Motor is rotated forward）, the first PLC（101）The first output point（1011）With the 2nd PLC（102）'s
First output point（1021）Drive relay one（103）Control coil（1031）, make relay one（103）Normally opened contact
（1032）Closure, to frequency converter（105）Rotating forward control port（1051）Rotating forward operating instruction is sent, now frequency converter（105）
Driving port（1053）Controlled motor（106）Rotate forward operation.When elevator is transferred（Motor reversal）, the first PLC（101）
Two output points（1012）With the 2nd PLC（102）The second output point（1022）Drive relay two（104）Control coil
（1041）, make relay two（104）Normally opened contact（1042）Closure, to frequency converter（105）Reversion control port（1052）
Reversion operating instruction is sent, now frequency converter（105）Driving port（1053）Controlled motor（106）Reversion operation.
As shown in Fig. 2, the given part of frequency converter frequency includes：First PLC（101）, the 2nd PLC（102）, frequency converter
（105）.First PLC（101）Analog output channel（1013）With the 2nd PLC（102）Analog output channel（1023）
With frequency converter（105）Frequency given side（1054）Connection.
The given purpose of frequency converter frequency is to realize the control of motor speed, i.e.,：Motor（106）The speed of service be by becoming
Frequency device（105）Frequency give to complete.First PLC（101）With the 2nd PLC（102）In controlled motor forward or reverse
Meanwhile, also pass through the first PLC（101）Analog output channel（1013）With the 2nd PLC（102）Analog output channel
（1023）To complete to frequency converter（105）Frequency given side（1054）Frequency give.First PLC（101）Analog output
Passage（1013）With the 2nd PLC（102）Analog output channel（1023）The analog quantity setting value of output is less than frequency converter
（105）Frequency given side（1054）Analog quantity maximum, so when system has voltage pulsation and from extraneous interference, no
Frequency converter can be caused due to overvoltage（105）The data of innernal CPU are overflowed, to protect the reliability service of system.
As shown in figure 3, work lock control section includes：Brake handle（301）, work lock control panel（302）, relay three
Normally opened contact（303）, hydraulic station（304）.Brake handle（301）Connect work lock control panel（302）Input（3021）, work
Make lock control panel（302）Output end（3022）Via the normally opened contact of relay three（303）Connect hydraulic station（304）Ratio overflow
Flow valve（305）.
In lifting system, disc-brake is to carry out accumulation of energy by butterfly spring, when needing to open disc-brake, is led to
Increase oil cylinder working-pressure is crossed, oil cylinder is moved in parallel, compress butterfly spring, open wide disc-brake.When oil pressure is reduced or is disappeared,
Disc-brake relies on the elastic potential energy of butterfly spring, makes brake disc closely connected with reel, forms braking moment, realizes duty
It is dynamic.
The work lock control section course of work is：The control of work lock passes through brake handle（301）To complete.By promoting
Brake handle（301）Carry out adjustment work lock control panel（302）Input terminal（3021）Voltage, work lock control panel（302）Will
Obtained handle voltage signal by after power amplifier by output end（3022）Output.Relay three is work lock control relay, by
PLC is controlled, and can system work lock, which open wide, is dependent on the normally opened contact of relay three（303）Whether close.Relay three is normally opened
Contact（303）During closure, work lock control panel（302）Output end（3022）Output signal to hydraulic station（304）Proportional overflow
Valve control panel（305）, proportional pressure control valve control panel（305）By adjusting its gain coefficient and zero-bit, you can realize that comparative example is overflow
The system residual voltage of valve and the regulation of system maximum pressure are flowed, so as to complete the control of work lock braking moment.
As shown in figure 4, emergency lock control section includes：The normally opened contact of relay four（401）, the time relay（402）, electricity
Magnet valve one（403）, magnetic valve two（404）, magnetic valve three（405）, the first PLC（101）, the 2nd PLC（102）, relay six
（406）.The normally opened contact of relay four（401）One end is connected with the positive and negative power supply of system, the other end and the time relay（402）'s
Control coil（4021）Connection, the time relay（402）Control coil（4021）Again with magnetic valve one（403）Connection, system
Negative supply is connected to magnetic valve two simultaneously（404）With magnetic valve three（405）, system positive supply is via the time relay（402）'s
Contact（4022）With relay six（406）Normally-closed contact（4063）It is connected to magnetic valve two（404）, the time relay（402）
Contact（4022）The other end and magnetic valve three（405）Connection, system positive supply is via relay six（406）Normally opened contact
（4062）It is connected to magnetic valve three（405）, the first PLC（101）The 4th output point（1014）With the 2nd PLC（102）The 4th
Output point（1024）It is connected to relay six（406）Control coil（4061）.
Emergency lock controls, for occurring safety arrestment during accident, to belong to brake hard, is divided into two stage braking control and one
Level control for brake.
Two stage braking is that braking moment is applied on brake disc in two times, i.e., progressively by brake force when occurring emergency
Square is applied on brake disc.When system running speed than it is very fast when, kinetic energy is very big, and inertia is also very big, if by braking moment one
It is secondary to be applied on brake disc, very big impact will be caused to whole system, disconnected rope is resulted even in cylindrical drum hoist, it is right
Friction type winder is likely to result in steel wire iope slippage, and hoisting container is out of control, and leads to major accident.
The emergency lock control section course of work is：During system worked well, the normally opened contact of relay four（401）Closure, when
When emergency occurs for system, the normally opened contact of relay four（401）Disconnect, so that the time relay（402）Control coil
（4021）Dead electricity so that magnetic valve one（403）Dead electricity is turned on immediately, hydraulic station（304）Part oil through magnetic valve one（403）Stream
Oil return box, discharges a part of oil pressure.After one section is delayed, the time relay（402）Contact（4022）Action, is touched by normally closed
Point is switched to normally opened contact, so that magnetic valve two（404）Dead electricity is turned on, while making magnetic valve three（405）It must conduct.Hydraulic pressure
Stand（304）In it is remaining oil through magnetic valve two（404）With magnetic valve three（405）Fuel tank is flowed back to from oil pipe.Pass through magnetic valve two
（404）With magnetic valve three（405）The delay oil return of both sides brake disc oil pipe is completed, so that braking moment is applied into brake disc in two times
On, realize two stage braking.
One-level braking is exactly once to be applied to braking moment on brake disc, relative also referred to as two stage braking for two stage braking
Release.When one-level is braked, because braking moment is once to be applied on brake disc, necessarily there is impact to system, thus typically carrying
The speed for rising container has lowered, i.e., using one-level braking when hoisting container is already close to well head.
As shown in figure 4, when one-level is braked, the normally opened contact of relay four（401）Switched to disconnect by closure, magnetic valve one
（403）Dead electricity is turned on immediately, hydraulic station（304）Oil through magnetic valve one（403）Fuel tank is flowed back to, oil pressure is discharged.At the same time,
One PLC（101）The 4th output point（1014）With the 2nd PLC（102）The 4th output point（1024）Control relay six（406）
Control coil（4061）Obtain electric so that relay six（406）Normally-closed contact（4063）Disconnection, normally opened contact（4062）Closure,
So as to magnetic valve two（404）Dead electricity is turned on immediately, magnetic valve three（405）It must conduct immediately, the oil return immediately of both sides brake disc oil pipe,
It is achieved thereby that the one-level braking of system.
Double wire system control section：As shown in Fig. 1 ~ Fig. 4, this electric control gear system is worked simultaneously using two PLC, two sets of guarantors
Shield is acted simultaneously, is controlled by the first PLC（101）Complete, the 2nd PLC（102）Complete monitoring function.As the first PLC（101）Including
When peripheral circuit corresponding to it goes wrong, by the 2nd PLC（102）To complete driving function.
Claims (2)
1. a kind of mining elevator electric control gear system, it is characterised in that：The electric control gear system is run by motor forward and backward to be controlled
System, frequency converter frequency are given, work lock is controlled, emergency lock control and double wire system control five parts composition；Motor forward and backward is run
Control section includes：First PLC（101）, the 2nd PLC（102）, relay one（ 103 ）, relay two (104), frequency converter
（105）And motor（106）；First PLC（101）The first output point（1011）With the 2nd PLC（102）The first output point
（1021）With relay one（103）Control coil（1031）Connection, relay one（103）Normally opened contact（1032）With frequency conversion
Device（105）Rotating forward control port（1051）Connection, the first PLC（101）The second output point（1012）With the 2nd PLC（102）
The second output point（1022）With relay two（104）Control coil（1041）Connection, relay two（104）Normally opened contact
（1042）With frequency converter（105）Reversion control port（1052）Connection, frequency converter（105）Drive output（1053）With electricity
Machine（106）Connection；The given part of frequency converter frequency includes：First PLC（101）, the 2nd PLC（102）, frequency converter（105）；First
PLC（101）Analog output channel（1013）With the 2nd PLC（102）Analog output channel（1023）With frequency converter
（105）Frequency given side（1054）Connection；Work lock control section includes：Brake handle（301）, work lock control panel
（302）, the normally opened contact of relay three（303）, hydraulic station（304）；Brake handle（301）Connect work lock control panel（302）'s
Input（3021）, work lock control panel（302）Output end（3022）Via the normally opened contact of relay three（303）Connect hydraulic pressure
Stand（304）Proportional pressure control valve（305）；Emergency lock control section includes：The normally opened contact of relay four（401）, the time relay
（402）, magnetic valve one（403）, magnetic valve two（404）, magnetic valve three（405）, the first PLC（101）, the 2nd PLC（102）, after
Electrical equipment six（406）；The normally opened contact of relay four（401）One end is connected with the positive and negative power supply of system, the other end and the time relay
（402）Control coil（4021）Connection, the time relay（402）Control coil（4021）Again with magnetic valve one（403）Even
Connect, system negative supply connects magnetic valve two simultaneously（404）With magnetic valve three（405）, system positive supply is via the time relay
（402）Contact（4022）With relay six（406）Normally-closed contact（4063）Connect magnetic valve two（404）, the time relay
（402）Contact（4022）The other end and magnetic valve three（405）Connection, system positive supply is via relay six（406）It is normally opened
Contact（4062）It is connected to magnetic valve three（405）, the first PLC（101）The 4th output point（1014）With the 2nd PLC（102）'s
4th output point（1024）It is connected to relay six（406）Control coil（4061）.
2. the control method of mining elevator electric control gear system described in a kind of claim 1, it is characterised in that：Mining elevator
Electric control gear system control method runs control including motor forward and backward, the frequency of frequency converter is given, work lock is controlled, safety
Lock is controlled and double wire system control；The operation control of motor forward and backward：The control that is rotated and reverse by PLC to frequency converter is realized
Forward and backward control to motor；Frequency converter frequency gives：Completed by PLC controls the frequency of frequency converter to give to motor operation
The control of speed；Work lock control：In the case of normal work, the control of braking moment is completed by brake handle, work is reached
Make the purpose braked；Emergency lock is controlled：Safety arrestment is a kind of brake hard, is divided into two stage braking control and one-level brakes control
System, two stage braking is to be applied to braking moment on brake disc in two times, and one-level braking is that braking moment is once applied into brake disc
On；Double wire system is controlled：Controlled using two sets of PLC, during normal work, two sets of PLC work simultaneously, two sets of protections are acted simultaneously, when
When the peripheral circuit that first PLC includes corresponding to it goes wrong, driving function is completed by the 2nd PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649798.7A CN105302052B (en) | 2015-10-10 | 2015-10-10 | A kind of mining elevator electric control gear system and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649798.7A CN105302052B (en) | 2015-10-10 | 2015-10-10 | A kind of mining elevator electric control gear system and control method |
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| Publication Number | Publication Date |
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| CN105302052A CN105302052A (en) | 2016-02-03 |
| CN105302052B true CN105302052B (en) | 2017-10-03 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104531B (en) * | 2019-05-21 | 2021-10-01 | 山东东山新驿煤矿有限公司 | Elevator control protection system and control method based on constant-deceleration hydraulic station |
| CN111439695B (en) * | 2020-04-10 | 2024-03-08 | 中信重工开诚智能装备有限公司 | Control system and control method for working gate of variable-torque hydraulic station of elevator |
| CN117142380B (en) * | 2023-10-23 | 2024-02-13 | 中信重工开诚智能装备有限公司 | Electric control automatic driving system of mining elevator |
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|---|---|---|---|---|
| CN200943011Y (en) * | 2006-08-15 | 2007-09-05 | 唐山开诚电器有限责任公司 | PLC programmable main well lifting signal automatic quantitative loading-unloading integrated control system |
| CN101299151A (en) * | 2008-05-10 | 2008-11-05 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Automatic control method of cable railway large load |
| CN201534735U (en) * | 2009-10-29 | 2010-07-28 | 程栓柱 | Full digital frequency conversion electric control system control console of mine lifter |
| CN101817473A (en) * | 2010-04-14 | 2010-09-01 | 洛阳源创电气有限公司 | Frequency conversion system of rotor of alternating current mine hoist |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100265814B1 (en) * | 1996-04-25 | 2000-09-15 | 마봉태 | Lift motor speed control circuit for auto insertion apparatus of electronic parts |
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2015
- 2015-10-10 CN CN201510649798.7A patent/CN105302052B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200943011Y (en) * | 2006-08-15 | 2007-09-05 | 唐山开诚电器有限责任公司 | PLC programmable main well lifting signal automatic quantitative loading-unloading integrated control system |
| CN101299151A (en) * | 2008-05-10 | 2008-11-05 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Automatic control method of cable railway large load |
| CN201534735U (en) * | 2009-10-29 | 2010-07-28 | 程栓柱 | Full digital frequency conversion electric control system control console of mine lifter |
| CN101817473A (en) * | 2010-04-14 | 2010-09-01 | 洛阳源创电气有限公司 | Frequency conversion system of rotor of alternating current mine hoist |
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