CN205367364U - Detection apparatus for elevator magneto -rheological fluid brake braking moment - Google Patents
Detection apparatus for elevator magneto -rheological fluid brake braking moment Download PDFInfo
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- CN205367364U CN205367364U CN201521092527.8U CN201521092527U CN205367364U CN 205367364 U CN205367364 U CN 205367364U CN 201521092527 U CN201521092527 U CN 201521092527U CN 205367364 U CN205367364 U CN 205367364U
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- fluid brake
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Abstract
The utility model provides a detection apparatus for elevator magneto -rheological fluid brake braking moment and method, it includes controller, magneto -rheological fluid brake, and magneto -rheological fluid brake's mounting of rotors is on motor spindle, and voltage controlled current source 's current output terminal connects on magneto -rheological fluid brake's solenoid. Braking moment detection method is: when the elevator was unloaded, the electric current source was promoting under the moment effect rotatoryly to magneto -rheological fluid brake's solenoid arrival current I1 up to elevator motor spindle, note the arrival current value I1 of this moment, according to M1=K1 I1 formula, calculate the K1 of this moment, < during K' (the constant of K' for being less than K0), explain that stopper braking moment is not enough as K1, when K1=K0, explain that stopper braking moment is qualified. The utility model discloses an actively the effect is: it provides braking moment's detection device and detection method and this method simple accurate for the elevator that adopts magneto -rheological fluid brake, the elevator safe operation of adopting magneto -rheological fluid brake has been ensured.
Description
Technical field
This utility model relates to detection elevator brake braking moment, the specifically detecting device of elevator magnetorheological fluid brake braking moment.
Background technology
The brake that current elevator uses mostly is switching regulator brake, it starts brakes and includes, controller such as PLC or singlechip controller, converter and motor control successively, and the braking dish of switching regulator brake, encoder are arranged on the main shaft of motor.The whether qualified safety being directly connected to elevator of the braking moment of elevator brake, the braking moment therefore detecting brake is a highly important thing.CN101269770B discloses a kind of method realizing brake sticking force detection of motor, the size of motor lock-rotor square when embracing particular by detection band-type brake, judges that whether the power of band-type brake is enough, and then judges that whether its braking moment is qualified.The method is applicable to switching regulator brake.
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, size by the electrical current of the solenoid of control magneto-rheologic liquid brake and the magnetic flux of generation thereof, change the state of magnetic flow liquid, it is achieved start or braking.It is applied on elevator to have, and volume is little, cost is low, control strategy is simple, noise is low, long service life, ride comfort, and the feature performance benefit such as substantially need not keep in repair, and is the developing direction of elevator brake.
Summary of the invention
The purpose of this utility model is to provide the detecting device of a kind of elevator magnetorheological fluid brake braking moment.
The purpose of this utility model is achieved in that it includes PLC or singlechip controller and encoder, 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 solenoid of magneto-rheologic liquid brake, the analog output of PLC or singlechip controller terminates on the adjustment input of Voltage-controlled Current Source.
The detection method of braking moment is:
The linear relationship that the braking moment M of magneto-rheologic liquid brake and solenoid electrical current I exists is M=K0(Ie-I), in formula, K0 is the constant that elevator is known when dispatching from the factory, the brake output maximum braking moment Mmax=K0*Ie as I=0, as I=Ie, brake output braking moment is 0；It is M1 that known elevator counterweight produces lift car lifting moment；
1, during elevator no-load, current source is to the solenoid input current I1 of magneto-rheologic liquid brake, and the mode of input is that electric current starts to be gradually increased from 0, and magneto-rheologic liquid brake unclamps continuously gradually, until elevator motor main shaft rotates under promoting moment loading；
2, record input current value I1 now；
3, according to M1=K1*I1 formula, K1 now is calculated；
4, compare, as K1 < K' (K' is the constant less than K0), illustrate that the braking moment of brake is not enough；As K1=K0, illustrate that the braking moment of brake is qualified.
The elevator having the benefit effect that it is employing magneto-rheologic liquid brake of the present utility model provides detecting device and the detection method of braking moment, and the method is simple and easy to do；Ensure the elevator safety operation adopting magneto-rheologic liquid brake.
Accompanying drawing explanation
This utility model is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is schematic diagram of the present utility model.
Detailed description of the invention
Referring to Fig. 1, its startup brakes includes 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 solenoid of magneto-rheologic liquid brake, the analog output of PLC or singlechip controller terminates on the adjustment input of Voltage-controlled Current Source, and the on off control end of converter is connected with the output switch parameter end of PLC.
The detection method of braking moment is:
The linear relationship that the braking moment M of magneto-rheologic liquid brake and solenoid electrical current I exists is M=K0(Ie-I), in formula, K0 is the constant that elevator is known when dispatching from the factory, brake output maximum braking moment Mmax=K0 × Ie as I=0, and as I=Ie, brake output braking moment is 0；It is M1 that known elevator counterweight produces lift car lifting moment；
1, during elevator no-load, current source is to the solenoid input current I1 of magneto-rheologic liquid brake, and the mode of input is that electric current starts to be gradually increased from 0, and magneto-rheologic liquid brake unclamps continuously gradually, until elevator motor main shaft rotates under promoting moment loading；
2, input current value I1 now is recorded；
3, according to M1=K1 × I1 formula, K1 now is calculated；
4, compare, as K1 < K' (K' is the constant less than K0), illustrate that brake moment is not enough；As K1=K0, illustrate that brake moment is qualified.
Claims (1)
1. the detecting device of an elevator magnetorheological fluid brake braking moment, including PLC or singlechip controller and encoder, 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 solenoid of magneto-rheologic liquid brake, the analog output of PLC or singlechip controller terminates on the adjustment input of Voltage-controlled Current Source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521092527.8U CN205367364U (en) | 2015-12-25 | 2015-12-25 | Detection apparatus for elevator magneto -rheological fluid brake braking moment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521092527.8U CN205367364U (en) | 2015-12-25 | 2015-12-25 | Detection apparatus for elevator magneto -rheological fluid brake braking moment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205367364U true CN205367364U (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521092527.8U Active CN205367364U (en) | 2015-12-25 | 2015-12-25 | Detection apparatus for elevator magneto -rheological fluid brake braking moment |
Country Status (1)
| Country | Link |
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| CN (1) | CN205367364U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105398902A (en) * | 2015-12-25 | 2016-03-16 | 辽宁优力安机电设备有限公司 | Detection device and method for brake torque of elevator magnetorheological fluid brake |
-
2015
- 2015-12-25 CN CN201521092527.8U patent/CN205367364U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105398902A (en) * | 2015-12-25 | 2016-03-16 | 辽宁优力安机电设备有限公司 | Detection device and method for brake torque of elevator magnetorheological fluid brake |
| CN105398902B (en) * | 2015-12-25 | 2018-06-29 | 辽宁优力安机电设备有限公司 | The detection device and method of elevator magnetorheological fluid brake braking moment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |