CN105152065A - Elevator traction machine brake precision control system and method - Google Patents
Elevator traction machine brake precision control system and method Download PDFInfo
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- CN105152065A CN105152065A CN201510571743.9A CN201510571743A CN105152065A CN 105152065 A CN105152065 A CN 105152065A CN 201510571743 A CN201510571743 A CN 201510571743A CN 105152065 A CN105152065 A CN 105152065A
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- brake
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Abstract
The invention discloses an elevator traction machine brake precision control system and method. The system comprises an upper computer. The upper computer comprises an automatic voltage regulator current state detection module, a frequency converter current state detection module, an encoder pulse number state detection module, an automatic voltage regulator control module, an encoder pulse number monitoring module, a frequency converter output state detection module and an automatic voltage regulator stop control module. A frequency converter, an automatic voltage regulator, a traction machine, a brake and an encoder are controlled by the upper computer. The elevator traction machine brake precision control system and method have the advantages that the cost is low, the reliability is high, operation is convenient, and the structure is simple. The brake control precision is improved on the traction machine achieving complete machine installation directly on the existing production conditions, no other tool equipment needs to be specially designed for carrying out precision machining on the brake, installation and debugging are easy, and the system and method can be widely applied to brake production.
Description
Technical field
The present invention relates to a kind of system and method realizing drg precision controlling, especially a kind of system and method realizing elevator machine brake precision controlling, belongs to elevator brake security fields.
Background technology
In modern society, elevator has become indispensable riding instrument in people's life, and its safety run also receives the concern of people day by day, and in elevator accident, comparatively common car phenomenon of slipping, is because caused by the forfeiture of brake braking force substantially.As the safety component that elevator is important, directly affect the safe in operation of elevator the service life of drg.
Common brake structural has block formula and drum-type two kinds, and their principle of work is and relies on bilateral brake shoe and towing machine brake wheel surface contact, produces friction braking to reach the effect of stop elevator.Because production technology exists certain error, the surface of brake block may be uneven, when the towing machine brake wheel of brake shoe stop high speed rotating, huge kinetic energy can be converted into heat energy, the salient of brake shoe can in the friction stop process repeated, Yin Gaowen produces oxide the earliest, namely occurs sintering phenomenon.The braking force at sintering place will reduce greatly, and the effective brake area of brake shoe is reduced, and the discontinuity of brake surface, and then the decline leading brake braking force, reduce its service life.
Summary of the invention
The object of the invention is the defect in order to solve above-mentioned prior art, provide a kind of system realizing elevator machine brake precision controlling, this system has that cost is low, reliability is high, easy to operate, the simple feature of structure, and directly on the towing machine completing complete engine set installation, the control to drg precision can be realized.
Another object of the present invention is to provide a kind of method realizing elevator machine brake precision controlling.
Object of the present invention can reach by taking following technical scheme:
Realize the system of elevator machine brake precision controlling, described system comprises upper computer, and described upper computer is connected with coder, and is connected with drg by automatic voltage regulator, and is connected with towing machine by frequency converter; Described upper computer comprises:
Automatic voltage regulator current status detection module, for when the system incipient stage, detects the electric current whether no-output of automatic voltage regulator, if so, then judges that drg is in band-type brake state, if not, then sends fault cues;
Inverter current state detection module, during for being in band-type brake state when drg, detecting the electric current whether no-output of frequency converter, if so, judges that towing machine is in off working state, if not, then send fault cues;
Encoder pulse number state detection module, for when towing machine is in off working state, whether the pulse count detecting coder is unchanged, if so, controls frequency converter constant current output, makes towing machine by constant low-speed running, if not, then send fault cues;
Automatic voltage regulator control module, for when towing machine is in locked rotor condition, controls automatic voltage regulator by setting value pressure regulation, drg is declutched;
Encoder pulse number monitoring modular, for monitoring the change of encoder pulse number, when encoder pulse number reaching setting value, controlling automatic voltage regulator and keeping constant voltage, and make brake block enter mill lock state, namely brake shoe and towing machine carry out break-in;
Whether frequency converter outputs state detection module, for when drg mill lock reaches setting-up time, detect frequency converter and stop exporting, if so, judge that towing machine stops operating, if not, then send fault cues;
Automatic voltage regulator stops control module, for when towing machine stops operating, controls automatic voltage regulator and stops output, drg is fallen lock.
As a kind of embodiment, described drg is block brake or drum brake mechanism.
As a kind of embodiment, described coder is incremental encoder.
Another object of the present invention can reach by taking following technical scheme:
Realize the method for elevator machine brake precision controlling, described method realizes the control to frequency converter, automatic voltage regulator, towing machine, drg and coder by upper computer, comprising:
Described upper computer, when the system incipient stage, detects the electric current whether no-output of automatic voltage regulator, if so, then judges that drg is in band-type brake state, if not, then sends fault cues;
When drg is in band-type brake state, the electric current of described upper computer detection frequency converter whether no-output, if so, judges that towing machine is in off working state, if not, then sends fault cues;
When towing machine is in off working state, whether the pulse count of described upper computer detection coder is unchanged, if so, controls frequency converter constant current output, makes towing machine by constant low-speed running, if not, then send fault cues;
When towing machine is in locked rotor condition, described PC control automatic voltage regulator, by setting value pressure regulation, makes drg declutch;
The change of described upper computer monitoring encoder pulse number, when encoder pulse number reaches setting value, controls automatic voltage regulator and keeps constant voltage, and make brake block enter mill lock state, namely brake shoe and towing machine carry out break-in;
When drg mill lock reaches setting-up time, whether described upper computer detection frequency converter stops exporting;
Described PC control automatic voltage regulator stops exporting, and drg is fallen lock.
As a kind of embodiment, described coder adopts incremental encoder, and the described encoder pulse number setting value reached in setting value adopts following formula to calculate:
x＝y*r*0.8
Wherein, x is setting value, and y is the increment that coder turns around, and r is the rotating speed of towing machine.
The present invention has following beneficial effect relative to prior art:
1, present system and method are when towing machine is in running order, if the pulse count after the change of encoder pulse number reaches setting value, and frequency converter Driving Torque is constant, can illustrate that brake is in the critical conditions of dragging lock, the traction sheave of brake shoe and towing machine can fully break-in, the salient on brake block surface is scabbled in the friction of low speed low temperature, the braking force effectively preventing from the salient on brake shoe surface from sintering causing declines or the phenomenon of local pressure inequality, thus the control of drg precision when realizing producing, improve the service life of drg.
2, present system and method need be able to set the parameter of each towing machine, and the velocity of rotation of restriction towing machine, when ensureing brake drag lock, the traction sheave of brake shoe and towing machine carries out mill lock under the state of reasonable low speed, avoids the loss of brake braking force.
3, present system and method have that cost is low, reliability is high, easy to operate, the simple feature of structure, and can directly on the towing machine completing complete engine set installation, on existing working condition, improve the control accuracy of drg, without the need to other tooling devices of customized design, precision processing is carried out to drg, be easy to installment and debugging, can be widely used in the production of drg.
Accompanying drawing explanation
Fig. 1 is the system construction drawing realizing elevator machine brake precision controlling of the embodiment of the present invention 1.
Fig. 2 is the upper computer structured flowchart of the embodiment of the present invention 1.
Fig. 3 is the method flow diagram realizing elevator machine brake precision controlling of the embodiment of the present invention 2.
Wherein, 1-upper computer, 2-frequency converter, 3-automatic voltage regulator, 4-towing machine, 5-drg, 6-coder.
Detailed description of the invention
Embodiment 1:
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, the system realizing elevator machine brake precision controlling of the present embodiment comprises upper computer 1, described upper computer 1 is connected with coder 6, and be connected with drg 5 (automatic voltage regulator 3 connects with the connection box of drg 5) by automatic voltage regulator 3, and be connected with towing machine 4 (frequency converter 2 connects with the connection box of towing machine 4) by frequency converter 2, thus realize the control to frequency converter 2, automatic voltage regulator 3, towing machine 4, drg 5 and coder 6; Wherein, described drg is block brake or drum brake mechanism, and described coder is incremental encoder, and described drg and towing machine are all in the state having completed complete engine set installation and debugging completion.
As shown in Figure 2, described upper computer 1 can set Program Appliance program, it comprises automatic voltage regulator current status detection module 101, inverter current state detection module 102, encoder pulse number state detection module 103, automatic voltage regulator control module 104, encoder pulse number monitoring modular 105, frequency converter outputs state detection module 106 and automatic voltage regulator and stops control module 107, and the concrete function of modules is as follows:
Described automatic voltage regulator current status detection module 101, for when the system incipient stage, detects the electric current whether no-output of automatic voltage regulator, if so, then judges that drg is in band-type brake state, if not, then sends fault cues;
Described inverter current state detection module 102, during for being in band-type brake state when drg, detecting the electric current whether no-output of frequency converter, if so, judges that towing machine is in off working state, if not, then send fault cues;
Described encoder pulse number state detection module 103, for when towing machine is in off working state, whether the pulse count detecting coder is unchanged, if so, controls frequency converter constant current output, makes towing machine by constant low-speed running, if not, then send fault cues;
Described automatic voltage regulator control module 104, for when towing machine is in locked rotor condition, controls automatic voltage regulator by setting value pressure regulation, drg is declutched;
Described encoder pulse number monitoring modular 105, for monitoring the change of encoder pulse number, when encoder pulse number reaching setting value, controlling automatic voltage regulator and keeping constant voltage, and make brake block enter mill lock state, namely brake shoe and towing machine carry out break-in;
Whether frequency converter outputs state detection module 106, for when drg mill lock reaches setting-up time, detect frequency converter and stop exporting, if so, judge that towing machine stops operating, if not, then send fault cues;
Automatic voltage regulator stops control module 107, for when towing machine stops operating, controls automatic voltage regulator and stops output, drg is fallen lock.
Embodiment 2:
In the present embodiment, drg and towing machine are all in the state having completed complete engine set installation and debugging completion.
As shown in Figure 3, present embodiments provide a kind of method realizing elevator machine brake precision controlling, the method is applied to upper computer, comprises the following steps:
S1, when the system incipient stage, detect the electric current whether no-output of automatic voltage regulator, if so, then judge that drg is in band-type brake state, enters step S2, if not, then send fault cues, and terminate the operation of this secondary program;
S2, detect the electric current whether no-output of frequency converter, if so, judge that towing machine is in off working state, enters step S3, if not, then send fault cues, and terminate the operation of this secondary program;
Whether the pulse count of S3, detection coder is unchanged, if so, enters step S4, if not, then sends fault cues, and terminates the operation of this secondary program;
S4, control frequency converter constant current output, towing machine operate by constant low speed r, the upper limit of output current of frequency converter be towing machine by maximum current during constant low speed r running, now because brake does not declutch, towing machine is in locked rotor condition, enters step S5;
S5, control automatic voltage regulator by setting value pressure regulation, brake coil is obtained and electricly slowly to declutch, enter step S6;
The change of S6, monitoring encoder pulse number, if when encoder pulse number reaches setting value, illustrates that drg is in the critical conditions of dragging lock, starts to drag lock, enter step S7; Otherwise, return step S5; Wherein, because coder is incremental encoder, described setting value can adopt following formula to calculate:
x＝y*r*0.8
Wherein, x is setting value, and y is the increment that coder turns around, and r is the rotating speed of towing machine.
S7, control automatic voltage regulator and keep constant voltage, make brake block enter mill lock state, namely brake shoe and towing machine carry out break-in, and in the present embodiment, the traction sheave of towing machine is to carry out break-in close to the rotating speed of 0.8r and brake shoe;
If S8 drg mill lock reaches setting-up time, then enter step S9; Otherwise, return step S7;
Whether S9, detection frequency converter stop exporting, and if so, then judge that towing machine stops operating, and enters step S10, if not, then sends fault cues, and terminate the operation of this secondary program;
S10, control automatic voltage regulator and stop exporting, drg is fallen lock, terminates this secondary program and run;
In above-mentioned steps, brake shoe and towing machine carry out being described in detail as follows of break-in:
At Frequency Converter Control towing machine by after constant low-speed running, the band-type brake coil originally embraced slowly declutches under the control of automatic voltage regulator, until the pulse count after the change of encoder pulse number reaches setting value, and frequency converter Driving Torque is constant (illustrates that drg is in the critical conditions of dragging lock, start to drag lock), think that the traction sheave of brake shoe and towing machine is in contact condition, now carry out the mill lock of low speed (close to 0.8r), the salient on brake block surface can be made to scabble in the friction of low speed low temperature, prevent the generation of sintering phenomenon, thus the control of drg precision when realizing producing, improve the service life of drg.
One of ordinary skill in the art will appreciate that all or part of step realized in the various embodiments described above method is that the hardware that can carry out instruction relevant by program has come, corresponding program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk or CD etc.
In sum, present system and method have that cost is low, reliability is high, easy to operate, the simple feature of structure, and can directly on the towing machine completing complete engine set installation, on existing working condition, improve drg precision, without the need to other tooling devices of customized design, precision processing is carried out to drg, be easy to installment and debugging, can be widely used in the production of drg.
The above; be only patent preferred embodiment of the present invention; but the protection domain of patent of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the scope disclosed in patent of the present invention; be equal to according to the technical scheme of patent of the present invention and inventive concept thereof and replace or change, all belonged to the protection domain of patent of the present invention.
Claims (5)
1. realize the system of elevator machine brake precision controlling, it is characterized in that: described system comprises upper computer, described upper computer is connected with coder, and is connected with drg by automatic voltage regulator, and is connected with towing machine by frequency converter; Described upper computer comprises:
Automatic voltage regulator current status detection module, for when the system incipient stage, detects the electric current whether no-output of automatic voltage regulator, if so, then judges that drg is in band-type brake state, if not, then sends fault cues;
Inverter current state detection module, during for being in band-type brake state when drg, detecting the electric current whether no-output of frequency converter, if so, judges that towing machine is in off working state, if not, then send fault cues;
Encoder pulse number state detection module, for when towing machine is in off working state, whether the pulse count detecting coder is unchanged, if so, controls frequency converter constant current output, makes towing machine by constant low-speed running, if not, then send fault cues;
Automatic voltage regulator control module, for when towing machine is in locked rotor condition, controls automatic voltage regulator by setting value pressure regulation, drg is declutched;
Encoder pulse number monitoring modular, for monitoring the change of encoder pulse number, when encoder pulse number reaching setting value, controlling automatic voltage regulator and keeping constant voltage, and make brake block enter mill lock state, namely brake shoe and towing machine carry out break-in;
Whether frequency converter outputs state detection module, for when drg mill lock reaches setting-up time, detect frequency converter and stop exporting, if so, judge that towing machine stops operating, if not, then send fault cues;
Automatic voltage regulator stops control module, for when towing machine stops operating, controls automatic voltage regulator and stops output, drg is fallen lock.
2. the system realizing elevator machine brake precision controlling according to claim 1, is characterized in that: described drg is block brake or drum brake mechanism.
3. the system realizing elevator machine brake precision controlling according to claim 1, is characterized in that: described coder is incremental encoder.
4. realize the method for elevator machine brake precision controlling, it is characterized in that: described method realizes the control to frequency converter, automatic voltage regulator, towing machine, drg and coder by upper computer, comprising:
Described upper computer, when the system incipient stage, detects the electric current whether no-output of automatic voltage regulator, if so, then judges that drg is in band-type brake state, if not, then sends fault cues;
When drg is in band-type brake state, the electric current of described upper computer detection frequency converter whether no-output, if so, judges that towing machine is in off working state, if not, then sends fault cues;
When towing machine is in off working state, whether the pulse count of described upper computer detection coder is unchanged, if so, controls frequency converter constant current output, makes towing machine by constant low-speed running, if not, then send fault cues;
When towing machine is in locked rotor condition, described PC control automatic voltage regulator, by setting value pressure regulation, makes drg declutch;
The change of described upper computer monitoring encoder pulse number, when encoder pulse number reaches setting value, controls automatic voltage regulator and keeps constant voltage, and make brake block enter mill lock state, namely brake shoe and towing machine carry out break-in;
When drg mill lock reaches setting-up time, whether described upper computer detection frequency converter stops exporting, and if so, judges that towing machine stops operating, if not, then sends fault cues;
When towing machine stops operating, described PC control automatic voltage regulator stops exporting, and drg is fallen lock.
5. the method realizing elevator machine brake precision controlling according to claim 4, is characterized in that: described coder adopts incremental encoder, and the described encoder pulse number setting value reached in setting value adopts following formula to calculate:
x＝y*r*0.8
Wherein, x is setting value, and y is the increment that coder turns around, and r is the rotating speed of towing machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510571743.9A CN105152065B (en) | 2015-09-08 | 2015-09-08 | Realize the system and method for elevator machine brake precision controlling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510571743.9A CN105152065B (en) | 2015-09-08 | 2015-09-08 | Realize the system and method for elevator machine brake precision controlling |
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| CN105152065A true CN105152065A (en) | 2015-12-16 |
| CN105152065B CN105152065B (en) | 2017-08-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109422148A (en) * | 2017-09-04 | 2019-03-05 | 株式会社安川电机 | The adjustment progress control method of elevator device and brake device for elevator |
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| CN204251115U (en) * | 2014-11-21 | 2015-04-08 | 申龙电梯股份有限公司 | Elevator traction machine band-type brake force checking device |
| CN204324627U (en) * | 2014-10-20 | 2015-05-13 | 上海新时达电气股份有限公司 | A kind of elevator internal contracting brake performance detecting system |
| CN204416828U (en) * | 2015-02-05 | 2015-06-24 | 宁波申菱电梯配件有限公司 | A kind of drum-type towing machine band-type brake monitoring device |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1915311A2 (en) * | 2005-08-19 | 2008-04-30 | Kone Corporation | Elevator system |
| CN201129386Y (en) * | 2007-12-04 | 2008-10-08 | 吴国新 | Hoister brake-shoe performance synthesis detector |
| CN204324627U (en) * | 2014-10-20 | 2015-05-13 | 上海新时达电气股份有限公司 | A kind of elevator internal contracting brake performance detecting system |
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| CN204251115U (en) * | 2014-11-21 | 2015-04-08 | 申龙电梯股份有限公司 | Elevator traction machine band-type brake force checking device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109422148A (en) * | 2017-09-04 | 2019-03-05 | 株式会社安川电机 | The adjustment progress control method of elevator device and brake device for elevator |
| CN109422148B (en) * | 2017-09-04 | 2021-10-22 | 株式会社安川电机 | Elevator system and running-in operation control method of elevator brake device |
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| CN105152065B (en) | 2017-08-25 |
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