CN101143670A - Electrical protection method and device during frequency-changing elevator mechanical brake disabling - Google Patents
Electrical protection method and device during frequency-changing elevator mechanical brake disabling Download PDFInfo
- Publication number
- CN101143670A CN101143670A CNA2007100461949A CN200710046194A CN101143670A CN 101143670 A CN101143670 A CN 101143670A CN A2007100461949 A CNA2007100461949 A CN A2007100461949A CN 200710046194 A CN200710046194 A CN 200710046194A CN 101143670 A CN101143670 A CN 101143670A
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Abstract
An electric protective method and a device when a mechanical brake of a frequency conversion elevator fails is characterized in that an elevator controller real time monitors the displacement and the speed of an elevator car, and can immediately judge the mechanical brake of the elevator fails and the elevator slips if any unallowable displacement and certain moving speed are found to the elevator car before the elevator controller makes any direction and speed instruction. At this time, the invention can immediately send the zero-speed running signal to a frequency converter, and use the frequency converter to control the zero-speed torque moment produced by dragging a motor to brake the elevator car to stop, so as to ensure the safety of the people going in and out of the elevator car; meanwhile, gives out the alarm signal to notify the people in the elevator car to quickly leave, and then controls to close the door. In case of any irreversible failure to the mechanical brake, the invention controls the elevator car to run at lower speed in the slipping direction, until the elevator runs to an extreme position and stops. In this way, the invention can prevent severe accidents of shearing injury to people and high-speed crash because of high-speed slipping of the elevator.
Description
[technical field]
The present invention relates to a kind of lift facility, relate in particular to a kind of elevator preventive device, electrical protection method and device during particularly a kind of frequency-changing elevator mechanical brake disabling.
[background technology]
Elevator is to use vertical transportation transportation means the most widely.Present elevator prevents the measure that lift car continues to be subjected to displacement after mostly adopting mechanical brake to stop as elevator, to guarantee the come in and go out safety of lift car of passenger.For traction elevator, traction sheave lift car by steel rope one side suspension, another side is hanging counterweight, under the normal circumstances, elevator is by the motor drives traction sheave and rely on the frictional force drives lift car of traction race and steel rope to move up and down, elevator stops the back making the traction sheave stop by mechanical brake, leans on the static friction of traction race and steel rope to make lift car and counterweight keep static.In case the mechanical brake of elevator is subjected to accidents such as jam and lost efficacy, traction sheave will be owing to heavy side and varying in weight of cage side and passive rotation, displacement out of control (being commonly called as the slide car) also will take place in lift car, and the speed of slide car can be more and more faster, can cause the grave accident of personal injury and device damage when serious.
[summary of the invention]
Purpose of the present invention is exactly in order to overcome the above problems, electrical protection method and device when a kind of frequency-changing elevator mechanical brake disabling is provided.
Electrical protection method when the present invention proposes a kind of frequency-changing elevator mechanical brake disabling; it is characterized in that: utilize electric life controller in real time the displacement and the speed of lift car to be monitored; discovery electric life controller not originating party lift car to the time with speed command the generation that surpass to allow displacement is arranged; and certain moving velocity is arranged; be the decidable elevator mechanical brake disabling, elevator slide car.Can control immediately at this moment and connect being electrically connected of frequency converter and hoisting motor, and give zero-speed run signal of frequency converter, the zero-speed torque that utilizes the Frequency Converter Control hoisting motor to produce makes the lift car stop, guarantees discrepancy lift car personnel's safety.The alert cue of transmitting messages simultaneously, the personnel in the notice lift car speed away, and control is closed the door then.After treating that elevator door cuts out, control mechanical brake action (if the mechanical brake chance failure, then through the mechanical brake action for several times, fault promptly disappears automatically) for several times again.Declare the slide car again after cancelling the zero-speed run signal of frequency converter,, then recover normal automatically if fault disappears; If fault still exists, then control the smooth car direction of lift car and move with crawl speed, run to end position until elevator and stop.Can avoid elevator to slip car at a high speed like this causes and shears the grave accident hurt sb.'s feelings and to collide at a high speed and take place.
Electric protective device when the invention provides a kind of frequency-changing elevator mechanical brake disabling, the electric life controller of the electrical protection method program when comprising mechanical brake disabling, frequency converter, hoisting motor, rotary encoder, mechanical brake motor drive mechanism, door mechanism system, alarm device etc. are formed.It is characterized in that: the electric life controller of the electrical protection method program when comprising mechanical brake disabling receives the security information and the operation solicited message of elevator, monitor the actual position and the velocity information of lift car simultaneously, the actual position of car and velocity information are taken from frequency converter to the frequency division that is contained in the two-phase rotary encoder feedback pulse on the hoisting motor or take from the two-phase rotary encoder that is installed on the velocity limiter or other can reflect the device of lift car displacement and speed in real time; Under the prerequisite that satisfies safety, send the control signal of service direction and speed to frequency converter according to the operation request, send the action control signal to mechanical brake, send the open and close gate control signal to door mechanism system, when elevator faults, send prompt messages to the alarm device.Frequency converter, hoisting motor, rotary encoder are formed a Closed-Loop Speed Governing System, wherein frequency converter is according to the operating instruction of electric life controller and the hoisting motor actual speed of rotary encoder feedback, and the control hoisting motor is by predetermined direction and speed operation.Door mechanism system is carried out the action of open and close door according to the instruction of electric life controller.The alarm device is sounding, light prompt messages under electric life controller control.
The present invention and prior art contrast, and effect is positive and tangible.The present invention by electric life controller to the displacement of lift car and the real-time monitoring of speed, when the elevator mechanical brake et out of order, utilize the zero-speed torque of frequency conversion speed-adjusting system to make the lift car stop, guaranteed discrepancy lift car personnel's safety, simultaneously by allowing the elevator of mechanical brake disabling guarantee that smooth car direction low cruise has also effectively been avoided the generation of collision accident at a high speed to end position under the safe prerequisite.
[description of drawings]
Electrical protection method when accompanying drawing 1 is a kind of frequency-changing elevator mechanical brake disabling and the related work flow process figure of device.
The electrical principle scheme drawing of the preferred embodiment of electric protective device when accompanying drawing 2 is a kind of frequency-changing elevator mechanical brake disablings.
[specific embodiment]
The related work flow process of the electrical protection method during a kind of frequency-changing elevator mechanical brake disabling shown in the accompanying drawing 1: electric life controller during the directionless and speed command, detects the variation of car speed and position at elevator in real time.When detecting car speed and surpass normal load and change the displacement that causes greater than permissible value and car position monotone variation, promptly decidable slips the car phenomenon and takes place.This moment, electric life controller sent prompt messages to the alarm device, reminded the interior passenger of sedan-chair to leave fast; To the zero-speed operating instruction of frequency converter transmission, utilize the zero-speed torque of frequency conversion speed-adjusting system to make the car stop with the rolling direction equidirectional; Send the instruction of closing the door to door mechanism system, guarantee that the passenger no longer passes in and out car.After treating that elevator door cuts out fully, the action of control mechanical brake also makes mechanical brake be in braking position for several times at last.Cancel direction and speed command this moment, declares elevator again and whether slip car.If the elevator transfixion illustrates that mechanical brake is sporadic inefficacy, get rid of through action several fault, can recover normal operation; If elevator slide car phenomenon still exists, illustrate that mechanical brake lost efficacy, electric life controller makes the smooth car direction of elevator low cruise to the end position parking to send the low cruise instruction with the slide car is equidirectional to frequency converter at this moment, wait maintainer repairing.
Shown in the accompanying drawing 2; electric protective device during a kind of frequency-changing elevator mechanical brake disabling, the electric life controller of the electrical protection method program when comprising mechanical brake disabling, frequency converter, hoisting motor M, rotary encoder PG, mechanical brake BRK, door mechanism system etc. are formed.The electric life controller of the electrical protection method program when wherein comprising mechanical brake disabling is responsible for receiving the security information and the operation solicited message of elevator, monitor the actual position and the velocity information of lift car simultaneously, the actual position of car and velocity information are taken from frequency converter to the frequency division that is contained in the two-phase rotary encoder feedback pulse on the hoisting motor or take from the two-phase rotary encoder that is installed on the velocity limiter or other can reflect the device of lift car displacement and speed in real time; Under the prerequisite that satisfies safety, send the control signal of service direction and speed to frequency converter according to the operation request, send the action control signal to the mechanical brake motor drive mechanism, send the open and close gate control signal to door mechanism system, when elevator faults, send prompt messages to the alarm device.Frequency converter, hoisting motor M, rotary encoder PG form a Closed-Loop Speed Governing System, wherein frequency converter is according to the actual speed of the hoisting motor M of the direction of electric life controller and speed command and rotary encoder PG feedback, and control hoisting motor M is by predetermined direction and speed operation.Mechanical brake BRK is controlled by electric life controller, unclamps when elevator need move, and stops or making the elevator traction machine stop during dead electricity at elevator.Door mechanism system is carried out the action of open and close door according to the instruction of electric life controller.The alarm device is sounding, light prompt messages under electric life controller control.Under the normal circumstances, electric life controller is controlled each parts co-ordination by the operation demand, finishes the transportation burden (detailed process slightly) of operation up and down, constantly monitors the actual position and the velocity information of lift car simultaneously in real time.In case mechanical brake BRK failure of removal takes place, the related work flow process of the electrical protection method when starting a kind of frequency-changing elevator mechanical brake disabling shown in the accompanying drawing 1 is immediately guaranteed the safety of elevator operation.
Claims (8)
1. the electrical protection method during frequency-changing elevator mechanical brake disabling; it is characterized in that: utilize electric life controller in real time the displacement and the speed of lift car to be monitored; discovery electric life controller not originating party lift car to the time with speed command the generation that surpass to allow displacement is arranged; and certain moving velocity is arranged; be the decidable elevator mechanical brake disabling, elevator slide car.
2. the electrical protection method during frequency-changing elevator mechanical brake disabling as claimed in claim 1; it is characterized in that: when elevator slips the car generation; being electrically connected of frequency converter and hoisting motor connected in control; and to zero-speed run signal of frequency converter; the zero-speed torque that utilizes the Frequency Converter Control hoisting motor to produce makes the lift car stop, guarantees discrepancy lift car personnel's safety.
3. the electrical protection method during frequency-changing elevator mechanical brake disabling as claimed in claim 1 is characterized in that: slip car when taking place at elevator, and the alert cue of transmitting messages, the personnel in the notice lift car speed away.
4. the electrical protection method during frequency-changing elevator mechanical brake disabling as claimed in claim 1; it is characterized in that: when confirming that irreversible inefficacy takes place mechanical brake; the smooth car direction of control lift car is moved with crawl speed, runs to end position until elevator and stops.Can avoid elevator to slip car at a high speed like this causes and shears the grave accident hurt sb.'s feelings and to collide at a high speed and take place.
5. the electric protective device during frequency-changing elevator mechanical brake disabling is characterized in that: the electric life controller of the electrical protection method program when comprising mechanical brake disabling, frequency converter, hoisting motor, rotary encoder, mechanical brake, door mechanism system, alarm device etc. are formed.
6. the electric protective device during frequency-changing elevator mechanical brake disabling as claimed in claim 5 is characterized in that: receive the security information and the operation solicited message of elevator by electric life controller, monitor the actual position and the velocity information of lift car simultaneously; Under the prerequisite that satisfies safety, send the control signal of service direction and speed to frequency converter according to the operation request, send the action control signal to mechanical brake, send the open and close gate control signal to door mechanism system, when elevator faults, send prompt messages to the alarm device.
7. the electric protective device during frequency-changing elevator mechanical brake disabling as claimed in claim 5 is characterized in that: the actual position of car and velocity information are taken from frequency converter to the frequency division that is contained in the two-phase rotary encoder feedback pulse on the hoisting motor or take from the two-phase rotary encoder that is installed on the velocity limiter or other can reflect the device of lift car displacement and speed in real time.
8. the electric protective device during frequency-changing elevator mechanical brake disabling as claimed in claim 5; it is characterized in that: frequency converter, hoisting motor, rotary encoder are formed a Closed-Loop Speed Governing System; wherein frequency converter is according to the operating instruction of electric life controller and the hoisting motor actual speed of rotary encoder feedback, and the control hoisting motor is by predetermined direction and speed operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100461949A CN101143670A (en) | 2007-09-20 | 2007-09-20 | Electrical protection method and device during frequency-changing elevator mechanical brake disabling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100461949A CN101143670A (en) | 2007-09-20 | 2007-09-20 | Electrical protection method and device during frequency-changing elevator mechanical brake disabling |
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| Publication Number | Publication Date |
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| CN101143670A true CN101143670A (en) | 2008-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100461949A Pending CN101143670A (en) | 2007-09-20 | 2007-09-20 | Electrical protection method and device during frequency-changing elevator mechanical brake disabling |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092611A (en) * | 2010-03-29 | 2011-06-15 | 上海华菱电站成套设备有限公司 | Protection method for brake system fault of elevator and elevator system |
| CN102689829A (en) * | 2012-05-31 | 2012-09-26 | 宁波乐邦电气有限公司 | Control method for preventing elevator from uncontrolled movement |
| CN103086224A (en) * | 2012-11-19 | 2013-05-08 | 江南嘉捷电梯股份有限公司 | Elevator structure |
| CN103738805A (en) * | 2013-12-24 | 2014-04-23 | 江苏永钢集团有限公司 | Material-loading trolley slipping index automatic protective device and protective method of blast furnace winch |
| CN103803366A (en) * | 2013-12-19 | 2014-05-21 | 西子奥的斯电梯有限公司 | Elevator brake torque detection method |
| CN104150292A (en) * | 2014-07-11 | 2014-11-19 | 深圳市海浦蒙特科技有限公司 | Elevator operation control method and system |
| CN104340802A (en) * | 2014-10-17 | 2015-02-11 | 南京理工大学 | Drive control system and drive control method for preventing car rolling of elevator |
| CN104909234A (en) * | 2014-03-12 | 2015-09-16 | Abb公司 | Condition monitoring of vertical transport equipment |
| CN105480805A (en) * | 2015-11-24 | 2016-04-13 | 广东亚太西奥电梯有限公司 | Car elevator capable of being prevented from accidental movement and method for preventing accidental movement of car elevator |
| CN105905729A (en) * | 2016-06-30 | 2016-08-31 | 天津市特种设备监督检验技术研究院 | Detection method for braking force of elevator tractor based on big data |
| CN106052935A (en) * | 2016-06-29 | 2016-10-26 | 清能德创电气技术（北京）有限公司 | Detection method for braking failure of motor band-type brake system |
| CN106452264A (en) * | 2015-08-07 | 2017-02-22 | 发那科株式会社 | Motor control system |
| CN107654545A (en) * | 2017-10-09 | 2018-02-02 | 快意电梯股份有限公司 | Elevator main brake block abrasion detection means and detection method |
| CN110361208A (en) * | 2018-03-26 | 2019-10-22 | 上海三菱电梯有限公司 | The test method and device for the method for lift car emergency braking apparatus |
| CN110932644A (en) * | 2019-12-11 | 2020-03-27 | 深圳市英威腾电气股份有限公司 | Frequency converter control method and device, storage medium and frequency converter |
| CN112499416A (en) * | 2019-09-16 | 2021-03-16 | 湖南中联重科建筑起重机械有限责任公司 | Elevator control system, equipment and storage medium based on information feedback |
| CN115215173A (en) * | 2022-07-04 | 2022-10-21 | 洛阳九亿重工集团有限公司 | Mine hoist zero-speed electrical safety braking method and braking system thereof |
-
2007
- 2007-09-20 CN CNA2007100461949A patent/CN101143670A/en active Pending
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092611B (en) * | 2010-03-29 | 2014-03-26 | 上海华菱电站成套设备有限公司 | Protection method for brake system fault of elevator and elevator system |
| CN102092611A (en) * | 2010-03-29 | 2011-06-15 | 上海华菱电站成套设备有限公司 | Protection method for brake system fault of elevator and elevator system |
| CN102689829A (en) * | 2012-05-31 | 2012-09-26 | 宁波乐邦电气有限公司 | Control method for preventing elevator from uncontrolled movement |
| CN103086224B (en) * | 2012-11-19 | 2015-04-22 | 江南嘉捷电梯股份有限公司 | Elevator structure |
| CN103086224A (en) * | 2012-11-19 | 2013-05-08 | 江南嘉捷电梯股份有限公司 | Elevator structure |
| CN103803366A (en) * | 2013-12-19 | 2014-05-21 | 西子奥的斯电梯有限公司 | Elevator brake torque detection method |
| CN103803366B (en) * | 2013-12-19 | 2016-04-27 | 西子奥的斯电梯有限公司 | A kind of elevator internal contracting brake torque measuring method |
| CN103738805A (en) * | 2013-12-24 | 2014-04-23 | 江苏永钢集团有限公司 | Material-loading trolley slipping index automatic protective device and protective method of blast furnace winch |
| CN103738805B (en) * | 2013-12-24 | 2016-06-01 | 江苏永钢集团有限公司 | A kind of blast furnace Control System of Hoisting Feeder is sauntered the automatic protecting method of the automatic protector of car index |
| CN104909234A (en) * | 2014-03-12 | 2015-09-16 | Abb公司 | Condition monitoring of vertical transport equipment |
| CN104909234B (en) * | 2014-03-12 | 2018-09-25 | Abb公司 | To the method and apparatus of the working condition detection of vertical transmission equipment mechanical brake |
| CN104150292A (en) * | 2014-07-11 | 2014-11-19 | 深圳市海浦蒙特科技有限公司 | Elevator operation control method and system |
| CN104150292B (en) * | 2014-07-11 | 2016-06-08 | 深圳市海浦蒙特科技有限公司 | Elevator operation control method and system |
| CN104340802A (en) * | 2014-10-17 | 2015-02-11 | 南京理工大学 | Drive control system and drive control method for preventing car rolling of elevator |
| CN106452264A (en) * | 2015-08-07 | 2017-02-22 | 发那科株式会社 | Motor control system |
| CN106452264B (en) * | 2015-08-07 | 2020-03-13 | 发那科株式会社 | Motor control system |
| CN105480805A (en) * | 2015-11-24 | 2016-04-13 | 广东亚太西奥电梯有限公司 | Car elevator capable of being prevented from accidental movement and method for preventing accidental movement of car elevator |
| CN105480805B (en) * | 2015-11-24 | 2018-02-06 | 广东亚太西奥电梯有限公司 | The method that elevator accidental movement can be prevented |
| CN106052935A (en) * | 2016-06-29 | 2016-10-26 | 清能德创电气技术（北京）有限公司 | Detection method for braking failure of motor band-type brake system |
| CN105905729A (en) * | 2016-06-30 | 2016-08-31 | 天津市特种设备监督检验技术研究院 | Detection method for braking force of elevator tractor based on big data |
| CN105905729B (en) * | 2016-06-30 | 2018-01-26 | 天津市特种设备监督检验技术研究院 | Elevator traction brake force monitoring method based on big data |
| CN107654545A (en) * | 2017-10-09 | 2018-02-02 | 快意电梯股份有限公司 | Elevator main brake block abrasion detection means and detection method |
| CN107654545B (en) * | 2017-10-09 | 2023-11-24 | 快意电梯股份有限公司 | Elevator host machine brake shoe abrasion detection device and detection method |
| CN110361208A (en) * | 2018-03-26 | 2019-10-22 | 上海三菱电梯有限公司 | The test method and device for the method for lift car emergency braking apparatus |
| CN112499416A (en) * | 2019-09-16 | 2021-03-16 | 湖南中联重科建筑起重机械有限责任公司 | Elevator control system, equipment and storage medium based on information feedback |
| CN112499416B (en) * | 2019-09-16 | 2023-03-21 | 湖南中联重科建筑起重机械有限责任公司 | Elevator control system, equipment and storage medium based on information feedback |
| CN110932644A (en) * | 2019-12-11 | 2020-03-27 | 深圳市英威腾电气股份有限公司 | Frequency converter control method and device, storage medium and frequency converter |
| CN110932644B (en) * | 2019-12-11 | 2021-12-24 | 深圳市英威腾电气股份有限公司 | Frequency converter control method and device, storage medium and frequency converter |
| CN115215173A (en) * | 2022-07-04 | 2022-10-21 | 洛阳九亿重工集团有限公司 | Mine hoist zero-speed electrical safety braking method and braking system thereof |
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Open date: 20080319 |