CN105129565A - Fault detecting method for braking device - Google Patents
Fault detecting method for braking device Download PDFInfo
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- CN105129565A CN105129565A CN201510676294.4A CN201510676294A CN105129565A CN 105129565 A CN105129565 A CN 105129565A CN 201510676294 A CN201510676294 A CN 201510676294A CN 105129565 A CN105129565 A CN 105129565A
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Abstract
The invention discloses a fault detecting method for a braking device. The fault detecting method is used for comprehensively detecting and diagnosing the action matching reliability of all sectors on a brake shoe and a brake drum. The fault detecting method comprises the steps of sequentially carrying out static detection and dynamic detection on the braking device; during static detection, applying a torque current with a specific direction to a traction machine in a brake closing state, and observing the slip condition of a traction wheel; during dynamic detection, setting the switching sequence of the sectors through a sector management unit, releasing the brake, and driving the traction machine to rotate; and when the traction machine rotates for a certain mechanical angle, stopping the brake, meanwhile, cutting off a power source of the traction machine, and observing the braking- stopping distance of the traction machine from rotating to stopping. The fault condition of the braking device is diagnosed through judging static and dynamic detection results on all the sectors. The fault detecting method is high in diagnosis coverage rate and capable of checking slight abnormality of the braking device, achieving the aim of nipping in blossom and effectively avoiding accidents caused by failure of the braking device.
Description
Technical field
The present invention relates to a kind of brake equipment fault detection method.
Background technology
There is the multinomial technology about braking forces measuring in current domestic industry, but all there is certain defect.
As patent 200810094853.0 and 02829758.X, it need could carry out test in certain floor, and needs before testing to make resistance measurement to elevator, determines Measurement of Elevator torque, and make testing process become complicated and limit many, alerting ability is low;
And for example patent 200810037218.9, this technology applies diagnosis to motor and diagnoses torque in advance under braking mode, braking force is passed judgment on by detecting car slippage, only can detect the braking force of brake block place brake surface, and can not the braking conditions of the whole brake equipment of complete detection, for motor leakage of oil, the situations such as brake wheel gets rusty, investigation rate is lower, more can not accomplish 100% investigation, leave potential safety hazard;
For another example patent 201310705100.X and patent 201180054949.4, all require to apply to motor the torque that constantly increases progressively under braking mode, until car generation slippage, motor torque when car slippage being occurred and reference value contrast, thus judge braking force.But because the braking force of drg time normal far exceedes torque capacity that elevator frequency converter can export, in order to realize this technology, just need select more high-capacity frequency converter, thus economic benefit is low.
Meanwhile, above technology also has following not enough: consider abundant not to the actual effect pattern of braking, such as main frame leakage of oil, steel rope gets rid of oil, and brake wheel such as to get rusty at the situation, make brake wheel local surfaces cover greasy dirt, affect the braking force of this local, and at the incident initial stage, hypodynamic probability is braked relatively low by above-mentioned scientific discovery, thus can not accomplish to check erroneous ideas at the outset, easily leave potential safety hazard, lead to safety misadventure.
Summary of the invention
Overcome the shortcoming of above-mentioned background technology, the invention provides a kind of diagnosis coverage rate high, practical, the brake equipment fault detection method of high financial profit, the present invention adopts following technical scheme in order to achieve the above object:
To shut and under the state of car zero load at systems axiol-ogy elevator door, brake equipment fault detection status can be entered manually or automatically, in this condition, between plum blossom, bamboo carries out Static Detection and detection of dynamic to brake equipment, in Static Detection, system detects to each sector all applies specific direction torque current to towing machine under arrester close state, observes the slippage situation of traction sheave; In detection of dynamic, the transfer sequence between sector is formulated by sector manager, release the brake also drives towing machine to rotate, when towing machine rotates certain mechanical angle, closed drg cuts off towing machine electrical source of power simultaneously, observes towing machine from braking distance when turning to stopping, and handoff sectors whereby, by to the Static and dynamic testing result judge on each sector, diagnose the failure condition of brake equipment, and failure condition is sent to monitoring and control centre.
Brake equipment fault detection method provided by the invention, when under the state that systems axiol-ogy elevator door shuts, brake equipment fault detection status can be entered manually or automatically, in this condition, the present invention is by distinctive sector management unit, comprehensive checkout and diagnosis is carried out to the reliability that the action of the brake surface of each sector of brake block and brake wheel coordinates, described diagnosis can cover most braking failure pattern, can detect common as brake equipment remarkable action, brake block wearing and tearing etc., also rare towing machine leakage of oil can be detected, the failure modes such as brake wheel gets rusty, diagnosis coverage rate is higher.Especially brake wheel local is had to the situation of greasy dirt, extremely low by the method for inspection detection probability of background technology, often to arrive brake wheel major part covering greasy dirt just easily to detect, and the present invention can accomplish complete detection, thus can accomplish to check erroneous ideas at the outset, the safety misadventure preventing brake equipment to lose efficacy most possibly occurs.Reliability detection can not only be carried out to the action part of brake equipment itself, complete detection can also be carried out to whole brake wheel, and detecting pattern is various, existing Static Detection, also has detection of dynamic, especially for main frame leakage of oil, the problem such as to get rusty, can check erroneous ideas at the outset, pinpoint the problems in advance, greatly improve the investigation rate of the not enough fault of braking force.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a application's part, does not form inappropriate limitation of the present invention, in the accompanying drawings:
Fig. 1 is system chart of the present invention;
Wherein (a) complex control system, (b) drg driver element, (c) variable frequency drive unit, (d) drg, (e) towing machine, (f) rotation detecting circuit, (g) sector management unit, (h) brake equipment fault detection order;
Fig. 2 is diagram of circuit of the present invention;
Fig. 3 is the explanation diagram of embodiment of the present invention situation 1;
The explanation diagram of embodiment of the present invention situation 2 during Fig. 4;
The explanation diagram of embodiment of the present invention situation 3 during Fig. 5;
In Fig. 3 ~ Fig. 5, (a) brake wheel, (b) brake block.
Detailed description of the invention
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as a limitation of the invention.
Embodiment:
As shown in Figure 1, brake equipment fault detection method of the present invention is realized by following system: comprise variable frequency drive unit, sector management unit, drg driver element, rotation detecting circuit, and Comprehensive Control unit, wherein Comprehensive Control unit can export to drg driver element the instruction sending drg opening and closing, the sector test sequence of sector management unit can be received, and variable frequency drive unit is sent to the operating instruction of towing machine, variable frequency drive unit can carry out speed according to the instruction of Comprehensive Control unit to towing machine, position, direct torque, sector management unit can be diagnosed and record the reliability that brake block coordinates with the action of each sector on brake wheel, and the sector order performing and detect is guided to Comprehensive Control unit, drg driver element can drive the open and close of drg, rotation detecting circuit can detect the rotation situation of traction sheave, be preferably rotary encoder.
As shown in Figure 2, Comprehensive Control unit inspection hoistway door and gate are all closed and elevator is in light condition, preferably, zero load detects by LOAD CELLS, also confirm by operating personnel, after Comprehensive Control unit receives brake equipment fault detection order (this order manually inputs by man-machine interface, also automatically can be entered by some condition of setting), perform and operate as follows:
1, Comprehensive Control unit judges car present position, if most top layer, then sector management pattern is reverse by forward changing to of giving tacit consent to, and preferably, the detection of most top layer is by realizing the detection of the upper limit position switch state in elevator hoistways;
2, Static Detection is carried out, applying direction by frequency converter to towing machine is car up direction, size is the torque of T, continue the t time, and within the t time, skidding distance L1 and the sliding velocity V1 of traction sheave is observed by rotation detecting circuit, enter step 6, preferably, rotation detecting circuit is rotary encoder;
3, made comparisons by skidding distance L1 and threshold value Lc, if L1>Lc, current sector is recorded as diagnosis nonconformity by sector management unit, and performs step (10);
4, made comparisons by sliding velocity V1 and threshold value Vc, if V1>Vc, current sector is recorded as diagnosis nonconformity by sector management unit, and performs step (10);
5, sector management unit current sector is recorded as diagnosis qualified;
6, after repeating step (2) ~ (5) several times, step (11) is performed;
7, detection of dynamic is carried out, when sector management pattern be forward time, towing machine is driven up to run mechanical angle θ degree in direction, when sector management pattern is reverse, towing machine is driven down to run mechanical angle θ degree in direction, after running mechanical angle θ degree, by the power supply of drg driver element and variable frequency drive unit breakaway braking device and towing machine;
8, observe traction sheave braking distance L2 by rotation detecting circuit, and itself and threshold value Lc2 are made comparisons, if L2>Lc2, current sector is recorded as diagnosis nonconformity by sector management unit, and performs step (10);
9, step (2) is performed;
10, exit brake troubles detected state, elevator is shut down and notifies monitoring and control centre;
11, exit brake troubles detected state, issue brake equipment authentic communication.
In detection of dynamic, switching between sector and detection of dynamic are integrated into a pattern: formulate the transfer sequence between sector by sector management unit, release the brake also drives towing machine to rotate, when towing machine rotates certain mechanical angle, closed drg cuts off towing machine electrical source of power simultaneously, observe towing machine from braking distance when turning to stopping, and handoff sectors whereby.
In above-mentioned embodiment, sector management unit provides operation angle to guide by parameter preset θ and n to Comprehensive Control unit, mated condition between whole brake wheel and brake block can be detected completely to make brake equipment fault detection system, wherein θ is the angle that brake wheel rotates at every turn, and n is the number of times that brake wheel rotates.
Below respectively to three kinds of different situations, the calculating choosing method of parameter θ and n being described, for ease of illustrating, launching to illustrate for the situation of two brake shoes:
Situation one: brake block is distributed as the symmetrical and vertical axis of horizontal shaft on brake wheel
This situation as shown in Figure 3.Its brake block is distributed as the symmetrical and vertical axis of horizontal shaft on brake wheel, if wherein lp=120 °, lm=60 °, is satisfied
visible when θ=60 ° n have minimum value n=3, namely brake wheel rotates 60 ° at every turn, turn 2 times, just can detect the mated condition between whole brake wheel and brake block completely, the detection angles territory of each sector is as shown in following formula:
Situation two: brake block is continuous distribution on brake wheel
This situation as shown in Figure 4.Its brake block is distributed as horizontal shaft symmetry on brake wheel, if wherein lp=0 °, lm=45 °, is satisfied
visible when θ=90 ° n have minimum value n=4, namely brake wheel rotates 90 ° at every turn, turn 3 times, just can detect the mated condition between whole brake wheel and brake block completely, the detection angles territory of each sector is as shown in following formula:
Situation three: other situation (situation namely beyond non-situation one and situation two)
If lp=60 °, lm=30 °, as shown in Figure 5.Be satisfied
visible when θ=60 ° n have minimum value n=6, namely brake wheel rotates 60 ° at every turn, turn 5 times, just can detect the mated condition between whole brake wheel and brake block completely, the detection angles territory of each sector is as shown in following formula:
To sum up, made by coupling searching
time n minimum value, obtain the value of parameter preset θ and n, wherein SQ
1~ SQ
ncalculated by following formula by lp, lm, n and θ:
Wherein, lp is the minimum angle between brake block on brake wheel, and lm is the control for brake angle of single brake block on brake wheel, the angular range tested when sector SQ represents sector static test.
Visible above, the present invention can detect the braking potential of all sectors completely, and no matter any one sector exists greasy dirt or gets rusty, and the present invention can detect in one-time detection, accomplishes to check erroneous ideas at the outset, and effectively prevents the generation of braking force failure accidents.
Above the technical scheme that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth the principle of the embodiment of the present invention and embodiment, the explanation of above embodiment is only applicable to the principle helping to understand the embodiment of the present invention; Meanwhile, for one of ordinary skill in the art, according to the embodiment of the present invention, detailed description of the invention and field of application all will change, and in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. a brake equipment fault detection method, is characterized in that:
When door is closed and car is unloaded, enter brake equipment fault detection status, perform as follows, until exit braking applause detected state:
1) by Comprehensive Control unit judges car present position, if most top layer, then sector management pattern is reverse by forward changing to of giving tacit consent to;
2) Static Detection is carried out, described Static Detection is car up direction for applying direction by frequency converter to towing machine, and size is the torque of T, continues the t time, and within the t time, skidding distance L1 and the sliding velocity V1 of traction sheave is obtained by rotation detecting circuit, enter step 6);
3) made comparisons by skidding distance L1 and threshold value Lc, if L1>Lc, current sector is recorded as diagnosis nonconformity by sector management unit, and performs step 10);
4) made comparisons by sliding velocity V1 and threshold value Vc, if V1>Vc, current sector is recorded as diagnosis nonconformity by sector management unit, and performs step 10);
5) sector management unit current sector is recorded as diagnosis qualified;
6) step 2 is repeated) ~ 4) after several times, perform step 11);
7) detection of dynamic is carried out, described detection of dynamic for when sector management pattern be forward time, towing machine is driven up to run mechanical angle θ degree in direction, when sector management pattern is reverse, towing machine is driven down to run mechanical angle θ degree in direction, after running mechanical angle θ degree, by the power supply of drg driver element and variable frequency drive unit breakaway braking device and towing machine, obtain traction sheave braking distance L2 by rotation detecting circuit;
8) made comparisons by traction sheave braking distance L2 and threshold value Lc2, if L2>Lc2, current sector is recorded as diagnosis nonconformity by sector management unit, and performs step 10);
9) step 2 is performed);
10) exit brake troubles detected state, elevator is shut down and notifies monitoring and control centre;
11) exit brake troubles detected state, issue brake equipment authentic communication.
2. brake equipment fault detection method as claimed in claim 1, is characterized in that:
Sector management unit provides operation angle to guide by parameter preset θ and n to Comprehensive Control unit, mated condition between whole brake wheel and brake block can be detected completely to make brake equipment fault detection system, wherein θ is the angle that brake wheel rotates at every turn, and n is the number of times that brake wheel rotates.
3. brake equipment fault detection method as claimed in claim 2, is characterized in that:
Described brake block quantity is 2;
Made by coupling searching
time n minimum value, obtain the value of parameter preset θ and n, wherein SQ
1~ SQ
ncalculated by following formula by lp, lm, n and θ:
Wherein, lp is the minimum angle between brake block on brake wheel, and lm is the control for brake angle of single brake block on brake wheel, the angular range tested when sector SQ represents sector static test.
4. brake equipment fault detection method as claimed in claim 1, is characterized in that:
Described variable frequency drive unit carries out speed, position, direct torque according to the instruction of Comprehensive Control unit to towing machine.
5. brake equipment fault detection method as claimed in claim 1, is characterized in that:
Described sector management unit can be diagnosed and record the reliability that brake block coordinates with the action of each sector on brake wheel, and guides the sector order performing and detect to Comprehensive Control unit.
6. brake equipment fault detection method as claimed in claim 1, is characterized in that:
Described rotation detecting circuit is rotary encoder, to detect the rotation situation of traction sheave.
7. brake equipment fault detection method as claimed in claim 1, is characterized in that:
By state and the cab internal load situation of described Comprehensive Control unit inspection elevator door, when door is closed and car be zero load, Comprehensive Control unit can receive the order that enters brake equipment fault detection status and enter brake equipment fault detection status.
8. brake equipment fault detection method as claimed in claim 1, is characterized in that:
Switching between sector and detection of dynamic are integrated into a pattern.
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| CN201510676294.4A CN105129565B (en) | 2015-10-16 | 2015-10-16 | A kind of brake apparatus fault detection method |
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| CN201510676294.4A CN105129565B (en) | 2015-10-16 | 2015-10-16 | A kind of brake apparatus fault detection method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN106672723A (en) * | 2016-12-07 | 2017-05-17 | 广州日滨科技发展有限公司 | Detecting method and system for operating status of elevator brake |
| CN108792868A (en) * | 2018-06-30 | 2018-11-13 | 上海江菱机电有限公司 | The detection method of brake sticking brake power |
| CN108957318A (en) * | 2018-07-17 | 2018-12-07 | 简佑科技河北有限公司 | Door roller Performance Test System and method |
| CN110356945A (en) * | 2018-03-26 | 2019-10-22 | 上海三菱电梯有限公司 | The wear sensing equipment and brake device for elevator of linear motion component |
| CN112124285A (en) * | 2020-08-21 | 2020-12-25 | 北京汽车股份有限公司 | Failure determination method and device for vehicle braking force and vehicle |
| CN112479075A (en) * | 2020-11-26 | 2021-03-12 | 安徽盛世开元装备科技有限公司 | Jacking device for mounting steel structure net rack and using method thereof |
| CN111170111B (en) * | 2020-02-28 | 2021-03-16 | 深圳市通用互联科技有限责任公司 | Elevator fault detection method and device, computer equipment and storage medium |
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| 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 |
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| CN106672723B (en) * | 2016-12-07 | 2018-12-11 | 日立楼宇技术（广州）有限公司 | Elevator brake method for detecting operation state and system |
| CN110356945A (en) * | 2018-03-26 | 2019-10-22 | 上海三菱电梯有限公司 | The wear sensing equipment and brake device for elevator of linear motion component |
| CN108792868A (en) * | 2018-06-30 | 2018-11-13 | 上海江菱机电有限公司 | The detection method of brake sticking brake power |
| CN108957318A (en) * | 2018-07-17 | 2018-12-07 | 简佑科技河北有限公司 | Door roller Performance Test System and method |
| CN108957318B (en) * | 2018-07-17 | 2020-10-30 | 简佑科技河北有限公司 | Rolling door machine performance test system and method |
| CN111170111B (en) * | 2020-02-28 | 2021-03-16 | 深圳市通用互联科技有限责任公司 | Elevator fault detection method and device, computer equipment and storage medium |
| CN112124285A (en) * | 2020-08-21 | 2020-12-25 | 北京汽车股份有限公司 | Failure determination method and device for vehicle braking force and vehicle |
| CN112479075A (en) * | 2020-11-26 | 2021-03-12 | 安徽盛世开元装备科技有限公司 | Jacking device for mounting steel structure net rack and using method thereof |
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