CN112441488A - Elevator operation control device of multi-level friction lifting system - Google Patents
Elevator operation control device of multi-level friction lifting system Download PDFInfo
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- CN112441488A CN112441488A CN202011330435.4A CN202011330435A CN112441488A CN 112441488 A CN112441488 A CN 112441488A CN 202011330435 A CN202011330435 A CN 202011330435A CN 112441488 A CN112441488 A CN 112441488A
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- 238000013016 damping Methods 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 230000009471 action Effects 0.000 claims abstract description 7
- 238000003672 processing method Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000012790 confirmation Methods 0.000 abstract 1
- 230000003993 interaction Effects 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 abstract 1
- 238000012800 visualization Methods 0.000 abstract 1
- 238000004364 calculation method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 210000000078 claw Anatomy 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009193 crawling Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- 230000000087 stabilizing effect Effects 0.000 description 1
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- 239000010729 system oil Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
- B66B1/3423—Control system configuration, i.e. lay-out
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/46—Adaptations of switches or switchgear
- B66B1/467—Adaptations of switches or switchgear characterised by their mounting position
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Elevator Control (AREA)
Abstract
The invention discloses an elevator operation control device of a multi-level friction lifting system, which belongs to the field of mines, wherein the deep well multi-level friction lifting system comprises an electric control system, a lifting device and a safety protection device, the electric control system is used for controlling the operation of the whole lifting device, the lifting device is used for lifting by weight, and the safety protection device is used for protecting the safety of the whole lifting system, so that one-key starting and stopping of the elevator operation is realized, and a shaft wireless signal is fully covered: the tank follower can perform emergency stop when meeting emergency at any position in the shaft. On the basis of interphone and video monitoring, a remote control signal is added to start (stop) the vehicle, so that triple protection of sound, video and signal interlocking is realized, and the in-place confirmation is realized. Full-automatic layer changing damping cradle is accurate to jar: visualization of principle and fault full elements: the man-machine interaction interface is friendly and visual, and corresponding components and parts are popped up by clicking, and common faults, processing methods, action conditions and positions in the drawing are processed.
Description
Technical Field
The invention belongs to the field of mines, and particularly relates to an elevator operation control device of a multi-level friction hoisting system.
Background
The number of original lifting equipment of a company is 45, wherein 32 winches with the length of 1.2m, 8 winches with the length of 1.6m, 3 lifting machines with the length of 2m and 2 lifting machines with the length of 3 m. The equipped electric control system is a simple electric control system and only has the safety locking function required by the metal and nonmetal mine safety regulation.
In order to accelerate the deep middle section exploitation work, a unified exploitation and lifting production system is used for developing a lead-zinc-silver ore deep resource replacement technical improvement project of the Sinbarhu Right flag Rondda mining industry Limited liability company, wherein a technical improvement auxiliary well is mainly responsible for personnel, materials and equipment of the whole mine, is connected with a 320m middle section, a 200m middle section, a 0m middle section, a-40 m belt way and a-85 m powder ore recovery middle section in design, selects a JKMD-2.8X 4P III (left drive) type multi-rope friction hoist and a 3500X 1450 double-layer cage balance weight matching hammer for lifting, and selects an AC synchronous direct-connection motor 630kW, 56r/min and 10 kV. The control mode of 'AC-DC-AC high-voltage frequency conversion synchronous motor + full digital DSP regulation control + multi-PLC network control + upper computer diagnosis and monitoring + local area network information interconnection' is adopted, so that the full-automatic elevator operation of the elevator is realized, and the safe locking is ensured to be reliable and operate stably.
Disclosure of Invention
The speed curve of the running process of the elevator is analyzed by combining with the field industrial and mining conditions, and the calculation of relevant parameters of the actual operation of the elevator is completed; the designed automatic control system of the hoister has the advantages of simple structure, few fault points and high reliability.
In order to achieve the purpose, the invention is realized by the following technical scheme: the deep well multi-level friction lifting system comprises an electric control system, a lifting device and a safety protection device, wherein the electric control system is used for controlling the operation of the whole lifting device, the lifting device is used for lifting by weight, the safety protection device is used for protecting the safety of the whole lifting system, the electric control system comprises a reactor cabinet, a rectifier cabinet, a capacitor cabinet, an inverter cabinet, a variable frequency control cabinet, a PLC main control cabinet, an operation platform, an upper monitoring system, an air cooling system and a signal system, a high-voltage incoming line enters the reactor cabinet, the output end of the reactor cabinet is connected with the rectifier cabinet, the output end of the rectifier cabinet is connected with the capacitor cabinet, the output end of the capacitor cabinet is connected with the inverter cabinet, the output end of the inverter cabinet is connected with a direct current motor, the voltage output end of the other end of the capacitor cabinet is connected with the variable frequency control cabinet, the voltage output end of the variable frequency control, the control end of operation panel and PLC switch board is connected, is provided with the upper control on the operation panel.
Preferably, the lifting device comprises an elevator cage, an encoder and a position switch, the position switch is installed on a lifting track of the lifting device, the output end of the position switch is electrically connected with a PLC (programmable logic controller) in a PLC control cabinet of the electric control system, the encoder is installed on a rotating shaft of an alternating current lifting motor of the lifting device, the output end of the encoder is electrically connected with the PLC, a shaft floor position selection keyboard is installed inside the elevator cage, and the position selection keyboard is electrically connected with the PLC and can select the floor where the elevator cage stops.
Preferably, the safety protection device comprises an immediate brake application protection device, an emergency stop protection device and a protection device not allowing to drive again, wherein the immediate brake application protection device adopts a voltage transformer and a current transformer as detection elements, and the voltage transformer and the current transformer are arranged on a high-low voltage loop and a frequency converter loop; the emergency stop protection device adopts a temperature sensor as a detection element, the motor main shaft bushing is provided with the temperature sensor, and the signal output end of the temperature sensor is in telecommunication connection with the PLC; the emergency stop protection device adopts a voltage transformer as a detection element and is arranged on a main motor power line.
Preferably, the electric control system also has a downhole electric control system part, the downhole electric control system adopts 12-core optical cables and forms a downhole independent communication ring network, and each node is provided with a wireless router to realize wireless downhole wireless network coverage.
Preferably, the electric control system further comprises a remote control device, the remote control device is connected with the PLC through an underground wireless network, the remote control device is divided into two parts, one part is a vehicle operation remote control area, and the other part is an interlocking sending area.
Preferably, the upper monitoring device is provided with configuration software, the configuration software is integrated with an electric control system drawing, a cabinet arrangement drawing and a use instruction, and the upper monitoring device can also give an alarm when the system fails; and according to the actual arrangement, the device is displayed in an upper picture, and the action, common faults, processing methods, action conditions and positions in a drawing of corresponding components are clicked and popped up, so that the field overhaul maintenance and data filing work are facilitated.
Preferably, the lifting device is further provided with a full-automatic layer-changing damping cradle accurate tank aligning device, and the elastic extension of the first rope caused by the change of the terminal load can be automatically compensated.
The invention has the beneficial effects that:
the speed curve of the running process of the elevator is analyzed by combining with the field industrial and mining conditions, and the calculation of relevant parameters of the actual operation of the elevator is completed; the automatic control system of the elevator, which is designed according to requirements, has the advantages of simple structure, few fault points and high reliability, and can greatly improve the tank alignment and the operation efficiency compared with the traditional manual start-up in the full-automatic elevator operation.
Drawings
FIG. 1 is a control system block diagram;
FIG. 2 is a circuit diagram of a PLC control loop of an operating system;
FIG. 3 is a schematic diagram of an electrical control signal system and PLC configuration circuit for the lifting device;
FIG. 4 is a circuit diagram of a car operating system and a remote control system;
fig. 5 is a working principle diagram of an automatic layer-changing damping cage-supporting cradle.
In the figure, a supporting claw 1, a supporting tank roller 2, a buffer mechanism 3, a layer changing mechanism 4, a lapping rocker arm 5 and a base 6 are arranged.
Detailed Description
In order to facilitate the understanding and implementation of the present invention for those skilled in the art, the technical solutions of the present invention will be further described with reference to the accompanying drawings and specific embodiments.
The deep well multi-level friction lifting system comprises an electric control system, a lifting device and a safety protection device, wherein the electric control system is used for controlling the operation of the whole lifting device, the lifting device is used for lifting by weight, the safety protection device is used for protecting the safety of the whole lifting system, the electric control system comprises a reactor cabinet, a rectifier cabinet, a capacitor cabinet, an inverter cabinet, a variable frequency control cabinet, a PLC main control cabinet, an operation platform, an upper monitoring system, an air cooling system and a signal system, a high-voltage incoming line enters the reactor cabinet, the output end of the reactor cabinet is connected with the rectifier cabinet, the output end of the rectifier cabinet is connected with the capacitor cabinet, the output end of the capacitor cabinet is connected with the inverter cabinet, the output end of the inverter cabinet is connected with a direct current motor, the voltage output end of the other end of the capacitor cabinet is connected with the variable frequency control cabinet, the voltage output end of the variable frequency control, the control end of operation panel and PLC switch board is connected, is provided with the upper control on the operation panel.
The PLC main control cabinet adopts a Siemens S7-1500 double PLC master station matched ET200MP substation combination mode, and the connection mode adopts optical fiber ring network communication. The main control PLC has the fault self-diagnosis function, software (not less than 2) and hardware redundancy safety loops, and programmable controller I/O point redundancy of 20% for replacing field damaged points and other functions required to be added.
The elevator comprises an elevator cage, an encoder and a position switch, wherein the position switch is installed on a lifting track of the elevator, the output end of the position switch is electrically connected with a PLC (programmable logic controller) in a PLC control cabinet of an electric control system, the encoder is installed on a rotating shaft of an alternating current lifting motor of the elevator, the output end of the encoder is electrically connected with the PLC, a shaft floor position selection keyboard is installed inside the elevator cage, and the position selection keyboard is electrically connected with the PLC and can select a floor where the elevator cage stops. The automatic calculation of the winding diameter of the roller of the hoister, the automatic correction of the position of the system, the closed-loop control of the position of the hoister, the multiple synchronous monitoring and checking of the position and the like are realized. Realize the full-automatic elevator operation of lifting machine, automatic accurate jar of aiming at, the hoist engine room realizes unmanned on duty. The whole lifting system only needs one worker to select the operations of going, signaling, driving, slow-moving layer changing and the like with the tank worker, and a middle-section signal worker and a winch driver are saved.
The safety protection device comprises an immediate brake application protection device, an emergency stop protection device and a protection device which does not allow for driving again, wherein the immediate brake application protection device adopts a voltage transformer and a current transformer as detection elements, and the voltage transformer and the current transformer are arranged on a high-low voltage loop and a frequency converter loop; the emergency stop protection device adopts a temperature sensor as a detection element, the motor main shaft bushing is provided with the temperature sensor, and the signal output end of the temperature sensor is in telecommunication connection with the PLC; the emergency stop protection device adopts a voltage transformer as a detection element and is arranged on a main motor power line.
High and low voltage power supply failure, excitation circuit failure, stator circuit failure, frequency conversion system failure, lifting container overwinding, regulation and control circuit failure, braking system oil pressure failure, lifting system exceeding 15% of maximum speed, deceleration section overspeed of 10%, fixed point overspeed of 2m/s, steel wire rope sliding overrun, misdirection operation, safety braking button pressing, power supply outage, main circuit overvoltage, overcurrent, main circuit voltage loss and the like. Protection of the emergency stop: overheating of a main engine bearing bush, high temperature of a transformer, failure of a ventilator in the operation process, undervoltage of a signal power supply, high oil temperature of a hydraulic braking system, low oil level of the hydraulic braking system, abrasion of a brake shoe, deflection of a brake disc, fatigue of a spring and the like. After the lifting is finished, the protection of driving again is not allowed: the main motor is over-temperature, the low-voltage power supply leaks electricity, the signal power supply is grounded and has other ground faults, the room temperature is overhigh, the temperature of the control cabinet is overhigh, and the like.
The electric control system also comprises an underground electric control system part, the underground electric control system adopts 12 cores of optical cables and forms an underground independent communication ring network, and each node is provided with a wireless router to realize wireless underground wireless network coverage.
The electric control system further comprises a remote control device, the remote control device is connected with the PLC through an underground wireless network, the remote control device is divided into two parts, one part is a vehicle operation remote control area, and the other part is an interlocking sending area.
Configuration software is installed in the upper monitoring, and an electric control system drawing, a cabinet arrangement drawing and a use instruction are integrated on the configuration software, and an alarm can be given when the system fails; and according to the actual arrangement, the device is displayed in an upper picture, and the action, common faults, processing methods, action conditions and positions in a drawing of corresponding components are clicked and popped up, so that the field overhaul maintenance and data filing work are facilitated.
The lifting device is also provided with a full-automatic layer-changing damping cradle accurate tank aligning device, can automatically compensate the elastic extension of a first rope caused by the change of terminal load, and is controlled by adopting an electric control car operation full-automatic integrated technology. The full-automatic layer-changing damping cradle is arranged at the well head and the 0m middle section of the well bottom
As shown in figure 5, when the cage is lifted without withdrawing the supporting claw, the supporting claw can cut off the limit pin and turn upwards to let the cage pass. When the cage over-releasing accident occurs, the cage supporting force of the supporting claw exceeds the cage force which is preset upset, the supporting claw cuts off the safety pin and turns downwards to give way, the cage is ensured to pass safely, and the hidden cage trouble at the bottom of the well is relieved.
Full-automatic integrated technology for electric control operation of vehicle
The electric control system uses the field bus technology and the industrial Ethernet to lead the well mouth operation and signal operation platform and the middle section operation and signal operation platform PLC to be returned into the main control program and processed by the program in a unified operation way. The full-automatic starting function of the hoister is realized. The winch room can be operated unattended during full-automatic driving, each middle section of a signal does not need to be provided with a signal worker, and only one worker follows the cage with the cage to select the operations of going, driving with a signal, changing layers slowly and the like.
The automatic layer-changing damping cage supporting cradle is used for researching the condition that a lifting container jumps instantly under the influence of terminal load change due to elastic extension of a lifting rope, is accepted by a buffer device when a cage is stopped stably and has a cage stabilizing function, and can compensate the elastic extension of a first rope caused by the change of the terminal load and smoothly pass in and out a vehicle. The winch room can be operated unattended during full-automatic driving, each middle section of a signal does not need to be provided with a signal worker, and only one worker follows the cage with the cage to select the operations of going, driving with a signal, changing layers slowly and the like. After the cage is in place, the remote control operation equipment in the cage can be realized, and the safety locking function is realized. Double compensation function: the lower compensation arm compensates the elastic extension of the lifting rope with 450mm, the upper lapping arm compensates the extension with 150mm, the normal operation of the tank stopping within 600mm is ensured, and the defect that the tank stopping of similar products can only be within +/-20 mm can be overcome. Locking function: the container can be locked within 600mm, and the container is prevented from rebounding. The unlocking is convenient, the winch does not need to be reversely started, and the tank locking force is automatically released and released by the tank locking lock.
Calculation of parameters related to elevator operation
And analyzing the speed curve of the running process of the hoister in combination with the field industrial and mining conditions to complete the calculation of the relevant parameters of the actual running of the hoister.
In each lifting cycle, the operation process from starting, main acceleration, constant speed, main deceleration, crawling to parking is completed. But in the design, the speed is regarded as a three-stage speed chart, and the starting time and the crawling time of the speed chart are counted in the rest time. The calculation table is as follows:
three-stage lifting calculation table
Main acceleration force
=1.2×37785+63545×0.5=77115N
Stress at uniform speed stage
=1.2×37785=45342N
Main deceleration stress
=13569N。
The first fault capturing function and the intelligent fault early warning function are achieved, when the lifting system reports multiple faults, the faults occurring at the first time can be accurately captured, the reasons possibly causing the faults can be popped up, and the faults can be conveniently checked. The high-voltage frequency converter realizes that the four-quadrant frequency converter has the characteristics of rapid acceleration and deceleration, and energy is fed back to a power grid, so that the high-voltage frequency converter has a reactive compensation function, the power factor reaches above 0.95, the zero-speed hovering function is realized through repeated debugging, the brake wear is reduced in the starting and stopping processes, and the reversing fault generated by the brake power matching problem is effectively prevented.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. An elevator operation control device of a multi-level friction hoisting system is characterized in that: the deep well multi-level friction lifting system comprises an electric control system, a lifting device and a safety protection device, wherein the electric control system is used for controlling the operation of the whole lifting device, the lifting device is used for lifting by weight, the safety protection device is used for protecting the safety of the whole lifting system, the electric control system comprises a reactor cabinet, a rectifier cabinet, a capacitor cabinet, an inverter cabinet, a variable frequency control cabinet, a PLC main control cabinet, an operation platform, an upper monitoring system, an air cooling system and a signal system, a high-voltage incoming line enters the reactor cabinet, the output end of the reactor cabinet is connected with the rectifier cabinet, the output end of the rectifier cabinet is connected with the capacitor cabinet, the output end of the capacitor cabinet is connected with the inverter cabinet, the output end of the inverter cabinet is connected with a direct current motor, the voltage output end of the other end of the capacitor cabinet is connected with the variable frequency control cabinet, the voltage output end of the variable frequency control, the control end of operation panel and PLC switch board is connected, is provided with the upper control on the operation panel.
2. The multi-level friction hoisting system elevator-based operation control device according to claim 1, characterized in that: the elevator comprises an elevator cage, an encoder and a position switch, wherein the position switch is installed on a lifting track of the elevator, the output end of the position switch is electrically connected with a PLC (programmable logic controller) in a PLC control cabinet of an electric control system, the encoder is installed on a rotating shaft of an alternating current lifting motor of the elevator, the output end of the encoder is electrically connected with the PLC, a shaft floor position selection keyboard is installed inside the elevator cage, and the position selection keyboard is electrically connected with the PLC and can select a floor where the elevator cage stops.
3. The multi-level friction hoisting system elevator-based operation control device according to claim 1 or 2, characterized in that: the safety protection device comprises an immediate brake application protection device, an emergency stop protection device and a protection device which does not allow for driving again, wherein the immediate brake application protection device adopts a voltage transformer and a current transformer as detection elements, and the voltage transformer and the current transformer are arranged on a high-low voltage loop and a frequency converter loop; the emergency stop protection device adopts a temperature sensor as a detection element, the motor main shaft bushing is provided with the temperature sensor, and the signal output end of the temperature sensor is in telecommunication connection with the PLC; the emergency stop protection device adopts a voltage transformer as a detection element and is arranged on a main motor power line.
4. The multi-level friction hoisting system elevator-based operation control device according to claim 3, characterized in that: the electric control system also comprises an underground electric control system part, the underground electric control system adopts 12 cores of optical cables and forms an underground independent communication ring network, and each node is provided with a wireless router to realize wireless underground wireless network coverage.
5. The apparatus for controlling the elevator-based operation of a multi-level friction hoisting system according to any one of claims 1, 2 and 4, wherein: the electric control system further comprises a remote control device, the remote control device is connected with the PLC through an underground wireless network, the remote control device is divided into two parts, one part is a vehicle operation remote control area, and the other part is an interlocking sending area.
6. The multi-level friction hoisting system elevator-based operation control device according to claim 5, characterized in that: configuration software is installed in the upper monitoring, and an electric control system drawing, a cabinet arrangement drawing and a use instruction are integrated on the configuration software, and an alarm can be given when the system fails; and according to the actual arrangement, the device is displayed in an upper picture, and the action, common faults, processing methods, action conditions and positions in a drawing of corresponding components are clicked and popped up, so that the field overhaul maintenance and data filing work are facilitated.
7. The apparatus for controlling the elevator operation of a multi-level friction hoisting system according to any one of claims 1, 2, 4 and 6, wherein: the lifting device is also provided with a full-automatic layer-changing damping cradle accurate tank aligning device, the full-automatic layer-changing damping cradle is installed in the middle section of a well head and the middle section of a well bottom of 0m, and the elastic extension of a first rope caused by the change of a terminal load can be automatically compensated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011330435.4A CN112441488A (en) | 2020-11-24 | 2020-11-24 | Elevator operation control device of multi-level friction lifting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011330435.4A CN112441488A (en) | 2020-11-24 | 2020-11-24 | Elevator operation control device of multi-level friction lifting system |
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| CN112441488A true CN112441488A (en) | 2021-03-05 |
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| CN202011330435.4A Pending CN112441488A (en) | 2020-11-24 | 2020-11-24 | Elevator operation control device of multi-level friction lifting system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201530644U (en) * | 2009-10-29 | 2010-07-21 | 程栓柱 | All-digital frequency converting electric control system of mine hoister |
| 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 |
| CN202098940U (en) * | 2011-06-25 | 2012-01-04 | 昆明有色冶金设计研究院股份公司 | Wireless communication signal control device of mine hoist |
| CN204873387U (en) * | 2015-08-25 | 2015-12-16 | 中南大学 | Monitoring devices based on mine hoisting system |
| CN110950222A (en) * | 2019-11-12 | 2020-04-03 | 中国矿业大学 | Super-large tonnage cage lifting system of ultra-deep well driven by auxiliary vertical linear motor |
-
2020
- 2020-11-24 CN CN202011330435.4A patent/CN112441488A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201530644U (en) * | 2009-10-29 | 2010-07-21 | 程栓柱 | All-digital frequency converting electric control system of mine hoister |
| 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 |
| CN202098940U (en) * | 2011-06-25 | 2012-01-04 | 昆明有色冶金设计研究院股份公司 | Wireless communication signal control device of mine hoist |
| CN204873387U (en) * | 2015-08-25 | 2015-12-16 | 中南大学 | Monitoring devices based on mine hoisting system |
| CN110950222A (en) * | 2019-11-12 | 2020-04-03 | 中国矿业大学 | Super-large tonnage cage lifting system of ultra-deep well driven by auxiliary vertical linear motor |
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