CN105398902A - Detection device and method for brake torque of elevator magnetorheological fluid brake - Google Patents
Detection device and method for brake torque of elevator magnetorheological fluid brake Download PDFInfo
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- CN105398902A CN105398902A CN201510985428.0A CN201510985428A CN105398902A CN 105398902 A CN105398902 A CN 105398902A CN 201510985428 A CN201510985428 A CN 201510985428A CN 105398902 A CN105398902 A CN 105398902A
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- brake
- elevator
- magnetorheological fluid
- magneto
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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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- Elevator Control (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention provides a detection device and method for brake torque of an elevator magnetorheological fluid brake. The detection device comprises a controller and a magnetorheological fluid brake, wherein a rotor of the magnetorheological fluid brake is mounted on a motor main shaft, and the current output end of a current source is connected to an electromagnetic coil of the magnetorheological fluid brake under voltage control. The brake torque detection method comprises: when an elevator is in an idle state, the current source inputs current I1 into the electromagnetic coil of the magnetorheological fluid brake until the motor main shaft of the elevator rotates under the action of lifting torque; the input current I1 at the moment is recorded; according to the formula M1=K1*I1, K1 at the moment is calculated; when K1 is smaller than K' (K' is a constant smaller than K0), the result shows that the brake torque of the brake is insufficient; and when K1 is equal to K0, the result shows that the brake torque of the brake is qualified. The detection device and method have the advantages that the detection device and method for brake torque are provided for the elevator adopting the magnetorheological fluid brake, the method is simple and feasible, and the safe running of the elevator adopting the magnetorheological fluid brake is ensured.
Description
Technical field
The present invention relates to and detect elevator brake lock torque, is detecting device and the method for elevator magnetorheological fluid brake lock torque specifically.
Background technology
The drg that current elevator uses mostly is switching regulator drg, it starts brake system and comprises, controller such as PLC or singlechip controller, frequency converter and motor control successively, and brake disc, the coder of switching regulator drg are arranged on the main shaft of motor.The whether qualified safety being directly connected to elevator of lock torque of elevator brake, the lock torque therefore detecting drg is a very important thing.CN101269770B discloses a kind of method realizing brake sticking force detection of motor, particular by the size detecting motor lock-rotor square when band-type brake is embraced, judges that whether the power of band-type brake is enough, and then judges that whether its lock torque is qualified.The method is applicable to switching regulator drg.
CN102249136A discloses a kind of gearless traction machine adopting magneto-rheologic liquid brake, the rotor of magneto-rheologic liquid brake is arranged on electric machine main shaft, by controlling the electrical current of magnet coil of magneto-rheologic liquid brake and the size of the magnetic flux of generation thereof, change the state of magnetic flow liquid, realize start or braking.It is applied in elevator has volume is little, cost is low, control policy is simple, noise is low, long service life, ride comfort, and the feature performance benefit such as substantially need not to keep in repair, and is the developing direction of elevator brake.
Summary of the invention
The object of this invention is to provide a kind of detecting device and method of elevator magnetorheological fluid brake lock torque.
The object of the present invention is achieved like this: it comprises PLC or singlechip controller and coder, the rotor of magneto-rheologic liquid brake is arranged on electric machine main shaft, it is characterized in that: the current output terminal of voltage controlled current source is connected on the magnet coil of magneto-rheologic liquid brake, the analog output of PLC or singlechip controller terminates on the adjustment input end of voltage controlled current source.
The method of inspection of lock torque is:
The linear relationship that the lock torque M of magneto-rheologic liquid brake and magnet coil electrical current I exists is M=K0(Ie-I), in formula, K0 is the constant that elevator is known when dispatching from the factory, as I=0, drg exports maximum braking moment Mmax=K0*Ie, and as I=Ie, drg exports lock torque is 0; It is M1 that known elevator counterweight produces lift car lifting moment;
1, during elevator no-load, current source is to the magnet coil received current I1 of magneto-rheologic liquid brake, and the mode of input is that electric current increases gradually from 0, and magneto-rheologic liquid brake unclamps continuously gradually, until elevator motor main shaft rotates under lifting moment loading;
2, record input current value I1 now;
3, according to M1=K1*I1 formula, K1 is now calculated;
4, compare, as K1 < K' (K' is the constant being less than K0), illustrate that the lock torque of drg is not enough; As K1=K0, illustrate that the lock torque of drg is qualified.
Good effect of the present invention is: it is the detecting device and the method for inspection that adopt the elevator of magneto-rheologic liquid brake to provide lock torque, and the method is simple and easy to do; Ensure the elevator safety operation adopting magneto-rheologic liquid brake.
Accompanying drawing explanation
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is schematic diagram of the present invention.
Detailed description of the invention
See Fig. 1, its startup brake system comprises PLC or singlechip controller, magneto-rheologic liquid brake, the rotor of magneto-rheologic liquid brake is arranged on electric machine main shaft, the current output terminal of voltage controlled current source is connected on the magnet coil of magneto-rheologic liquid brake, the analog output of PLC or singlechip controller terminates on the adjustment input end of voltage controlled current source, and the on off control end of frequency converter is connected with the output switch parameter end of PLC.
The method of inspection of lock torque is:
The linear relationship that the lock torque M of magneto-rheologic liquid brake and magnet coil electrical current I exists is M=K0(Ie-I), in formula, K0 is the constant that elevator is known when dispatching from the factory, and as I=0, drg exports maximum braking moment Mmax=K0 × Ie, and as I=Ie, drg exports lock torque is 0; It is M1 that known elevator counterweight produces lift car lifting moment;
1, during elevator no-load, current source is to the magnet coil received current I1 of magneto-rheologic liquid brake, and the mode of input is that electric current increases gradually from 0, and magneto-rheologic liquid brake unclamps continuously gradually, until elevator motor main shaft rotates under lifting moment loading;
2, input current value I1 is now recorded;
3, according to M1=K1 × I1 formula, K1 is now calculated;
4, compare, as K1 < K' (K' is the constant being less than K0), illustrate that brake moment is not enough; As K1=K0, illustrate that brake moment is qualified.
Claims (2)
1. the detecting device of an elevator magnetorheological fluid brake lock torque, comprise PLC or singlechip controller and coder, the rotor of magneto-rheologic liquid brake is arranged on electric machine main shaft, it is characterized in that: the current output terminal of voltage controlled current source is connected on the magnet coil of magneto-rheologic liquid brake, the analog output of PLC or singlechip controller terminates on the adjustment input end of voltage controlled current source.
2. a method of inspection for elevator magnetorheological fluid brake lock torque, is characterized in that:
(1), during elevator no-load, current source is to the magnet coil received current I1 of magneto-rheologic liquid brake, the mode of input is that electric current increases gradually from 0, and magneto-rheologic liquid brake unclamps continuously gradually, until elevator motor main shaft rotates under lifting moment loading;
(2) input current value I1 now, is recorded;
(3), according to M1=K1 × I1 formula, K1 is now calculated;
(4), compare, as K1 < K' (K' is the constant being less than K0), illustrate that brake moment is not enough; As K1=K0, illustrate that brake moment is qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510985428.0A CN105398902B (en) | 2015-12-25 | 2015-12-25 | The detection device and method of elevator magnetorheological fluid brake braking moment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510985428.0A CN105398902B (en) | 2015-12-25 | 2015-12-25 | The detection device and method of elevator magnetorheological fluid brake braking moment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105398902A true CN105398902A (en) | 2016-03-16 |
| CN105398902B CN105398902B (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510985428.0A Active CN105398902B (en) | 2015-12-25 | 2015-12-25 | The detection device and method of elevator magnetorheological fluid brake braking moment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698131A (en) * | 2017-01-11 | 2017-05-24 | 广州广日电梯工业有限公司 | Elevator host demagnetization detection method |
| CN107043053A (en) * | 2017-03-27 | 2017-08-15 | 山西科达富升智能控制技术有限公司 | A kind of detection method of mine hoisting machine braking device three times turning moment |
| CN108773750A (en) * | 2018-06-06 | 2018-11-09 | 辽宁优力安机电设备有限公司 | The detection method of magneto-rheologic liquid brake elevator operation damping |
| CN110498311A (en) * | 2019-08-21 | 2019-11-26 | 日立电梯（中国）有限公司 | Braking force pre-diagnosis method and device for elevator brake |
| CN113865476A (en) * | 2021-11-02 | 2021-12-31 | 辽宁优力安机电设备有限公司 | Method and device for real-time state monitoring and early warning of electromagnetic brake |
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| CN103434911A (en) * | 2013-09-16 | 2013-12-11 | 福州大学 | Elevator dragging clutch brake system and method and device based on magneto-rheological effect |
| CN103953667A (en) * | 2014-03-24 | 2014-07-30 | 杭州电子科技大学 | High-efficiency magneto-rheological braking device |
| CN104495547A (en) * | 2014-12-23 | 2015-04-08 | 重庆迈高电梯有限公司 | Detection method of lift traction machine brake |
| CN205367364U (en) * | 2015-12-25 | 2016-07-06 | 辽宁优力安机电设备有限公司 | Detection apparatus for elevator magneto -rheological fluid brake braking moment |
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2015
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| US20110114421A1 (en) * | 2007-09-07 | 2011-05-19 | Zbigniew Piech | Elevator brake with magneto-rheological fluid |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698131A (en) * | 2017-01-11 | 2017-05-24 | 广州广日电梯工业有限公司 | Elevator host demagnetization detection method |
| CN106698131B (en) * | 2017-01-11 | 2018-12-14 | 广州广日电梯工业有限公司 | A kind of elevator host demagnetization detection method |
| CN107043053A (en) * | 2017-03-27 | 2017-08-15 | 山西科达富升智能控制技术有限公司 | A kind of detection method of mine hoisting machine braking device three times turning moment |
| CN107043053B (en) * | 2017-03-27 | 2019-04-19 | 山西科达富升智能控制技术有限公司 | A kind of detection method of mine hoisting machine braking device three times turning moment |
| CN108773750A (en) * | 2018-06-06 | 2018-11-09 | 辽宁优力安机电设备有限公司 | The detection method of magneto-rheologic liquid brake elevator operation damping |
| CN110498311A (en) * | 2019-08-21 | 2019-11-26 | 日立电梯（中国）有限公司 | Braking force pre-diagnosis method and device for elevator brake |
| CN113865476A (en) * | 2021-11-02 | 2021-12-31 | 辽宁优力安机电设备有限公司 | Method and device for real-time state monitoring and early warning of electromagnetic brake |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105398902B (en) | 2018-06-29 |
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