CN105129565B - A kind of brake apparatus fault detection method - Google Patents
A kind of brake apparatus fault detection method Download PDFInfo
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- CN105129565B CN105129565B CN201510676294.4A CN201510676294A CN105129565B CN 105129565 B CN105129565 B CN 105129565B CN 201510676294 A CN201510676294 A CN 201510676294A CN 105129565 B CN105129565 B CN 105129565B
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Abstract
The invention discloses a kind of brake apparatus fault detection method, the reliability that the action to each sector on brake block and brake drum coordinates carries out comprehensive checkout and diagnosis.Bamboo carries out Static Detection and dynamic detection to brake apparatus between plum blossom, in Static Detection, applies the torque current of specific direction to traction machine under arrester close state, observes the sliding situation of traction sheave；In dynamic detection, transfer sequence between sector, release brake and driving traction machine rotation are formulated by sector management unit, when traction machine rotates certain mechanical angle, close brake and cut off traction machine electrical source of power simultaneously, observe traction machine from braking distance when turning to stopping.By to the static state on each sector and dynamic detection result judge, diagnosing the failure situation of brake apparatus.Present invention diagnosis coverage rate is high, can investigate out the subtle anomalies of brake apparatus, accomplish to check erroneous ideas at the outset, effectively prevent the generation of brake apparatus fail safe accident.
Description
Technical field
The present invention relates to a kind of brake apparatus fault detection method.
Background technology
There is the multinomial technology on braking forces measuring in country's industry at present, but there is certain defect.
Such as patent 200810094853.0 and 02829758.X, it need to could carry out test in certain floor, and in test
Before need to make resistance measurement to elevator, determine Measurement of Elevator torque, make detection process become complicated and limit many, flexibility is low；
And for example patent 200810037218.9, the technology applies diagnosis and pre- diagnosis torque under on-position to motor,
Brake force is judged by detecting car slippage, but is only capable of the brake force of braking surface where detecting brake block, and can not
The braking conditions of the whole brake apparatus of complete detection, for motor oil leak, situations such as brake drum gets rusty, investigation rate is relatively low, less
100% investigation can be accomplished, potential safety hazard is left；
For another example patent 201310705100.X and patent 201180054949.4, are required to apply motor under on-position
Plus constantly incremental torque, until car slides, the motor torque that car is slid when occurring is contrasted with reference value,
So as to judge brake force.However, due to it is normal when brake brake force be to exceed well over the torque that elevator frequency converter can be output
Ability, in order to realize the technology, the frequency converter of more Large Copacity need to be just selected, thus economic benefit is low.
At the same time, above technology also has following deficiency：Actual effect pattern to braking considers not abundant enough, and such as main frame leaks
Oil, steel wire rope gets rid of oil, and brake drum is situations such as get rusty, and brake drum local surfaces is covered greasy dirt, influences the local brake force,
And at incident initial stage, hypodynamic probability is braked by above-mentioned scientific discovery relatively low, thus can not accomplish to check erroneous ideas at the outset, hold
Potential safety hazard easily is left, leads to security incident.
The content of the invention
The shortcoming of above-mentioned background technology is overcome, practical the invention provides one kind diagnosis coverage rate is high, economy effect
The high brake apparatus fault detection method of benefit, in order to achieve the above object the present invention adopt the following technical scheme that：
In the state of system detectio elevator door is shut and car is unloaded, it can manually or automatically enter brake apparatus failure and examine
Survey state, in this condition, bamboo carries out Static Detection and dynamic detection, in Static Detection, system to brake apparatus between plum blossom
Apply the torque current of specific direction to traction machine to each detection detection sector under arrester close state, observe traction
The sliding situation of wheel；In dynamic detection, the transfer sequence between sector is formulated by sector manager, release brake simultaneously drives
Dynamic traction machine is rotated, and when traction machine rotates certain mechanical angle, closure brake cuts off traction machine electrical source of power, observation simultaneously
Traction machine switches sector whereby from braking distance when turning to stopping, by the static state on each sector and dynamic inspection
Result judge is surveyed, the failure situation of brake apparatus is diagnosed, and failure situation is sent to Surveillance center.
The brake apparatus fault detection method that the present invention is provided, can be manual in the state of system detectio elevator door is shut
Or automatically into brake apparatus fault detection status, in this condition, the present invention can be by distinctive sector management unit, to system
The reliability that the action of dynamic brake shoe and the braking surface of each sector of brake drum coordinates carries out comprehensive checkout and diagnosis, and the diagnosis can be covered
Most brake fade pattern is covered, common such as brake apparatus remarkable action, brake block abrasion can be detected, can also be examined
Survey rare traction machine oil leak, brake drum the failure mode such as to get rusty, diagnosis coverage rate is higher.Locally there is oil particularly with brake drum
Dirty situation, extremely low by the detection method detection probability of background technology, often arriving brake drum, largely covering greasy dirt is just easy
Detection, and the present invention can accomplish complete detection, thus can accomplish to check erroneous ideas at the outset, the peace for preventing brake apparatus from failing most possibly
Full accident occurs.Reliability detection can not only be carried out in itself to the action part of brake apparatus, moreover it is possible to which whole brake drum is carried out
Complete detection, and detection pattern is various, existing Static Detection, also there is dynamic detection, in particular for main frame oil leak, gets rusty etc. and to ask
Topic, can check erroneous ideas at the outset, pinpoint the problems in advance, greatly improve the investigation rate of the not enough failure of brake force.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, not
Inappropriate limitation of the present invention is constituted, in the accompanying drawings：
Fig. 1 is the system block diagram of the present invention；
Wherein (a) complex control system, (b) brake driver element, (c) variable frequency drive unit, (d) brake, (e) are draged
Draw machine, (f) rotary detecting circuit, (g) sector management unit, the fault detect order of (h) brake apparatus；
Fig. 2 is the flow chart of the present invention；
Fig. 3 is the explanation diagram of situation of the embodiment of the present invention 1；
The explanation diagram of situation of the embodiment of the present invention 2 during Fig. 4；
The explanation diagram of situation of the embodiment of the present invention 3 during Fig. 5；
In Fig. 3~Fig. 5, (a) brake drum, (b) brake block.
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, herein illustrative examples of the invention
And explanation is used for explaining the present invention, but it is not as a limitation of the invention.
Embodiment：
As shown in figure 1, brake apparatus fault detection method of the present invention is realized by following system：Including frequency conversion drive list
Member, sector management unit, brake driver element, rotary detecting circuit, and Comprehensive Control unit, wherein Comprehensive Control unit
Brake driver element can be exported and send the instruction that brake is opened and closed, the sector test of sector management unit can be received
Sequentially, and to variable frequency drive unit the operating instruction of traction machine is sent, variable frequency drive unit can be instructed according to Comprehensive Control unit
Speed, position, direct torque are carried out to traction machine, sector management unit can be to each sector on brake block and brake drum
Action coordinate reliability diagnosed and recorded, and to Comprehensive Control unit guide perform detection sector order, brake
Driver element can drive the opening and closing of brake, and rotary detecting circuit can detect the rotation situation of traction sheave, preferably revolve
Turn encoder.
As shown in Fig. 2 Comprehensive Control unit detection hoistway door and gate are turned off and elevator is in Light Condition, it is excellent
Selection of land, zero load can be detected by weighing sensor, can also be confirmed by operating personnel, and Comprehensive Control unit receives brake apparatus
After fault detect order (this order can be manually entered by man-machine interface, can also by set some conditions automatically into),
Perform following operation：
1st, Comprehensive Control unit judges car present position, if top, then sector management pattern is by giving tacit consent to forward
It is changed to reverse, it is preferable that the detection of top can be realized by the detection to the upper limit position switch state in elevator hoistways；
2nd, Static Detection is carried out, it is car up direction to apply direction to traction machine by frequency converter, and size turns for T's
Square, continues the t times, and the skidding distance L1 and sliding velocity V1 of traction sheave are observed by rotary detecting circuit within the t times, enters
Enter step 6, it is preferable that rotary detecting circuit is rotary encoder；
3rd, skidding distance L1 and threshold value Lc are made comparisons, if L1>Current sector is recorded as diagnosis by Lc, sector management unit
It is unqualified, and perform step (10)；
4th, sliding velocity V1 and threshold value Vc are made comparisons, if V1>Current sector is recorded as diagnosis by Vc, sector management unit
It is unqualified, and perform step (10)；
5th, sector management unit by current sector be recorded as diagnosis it is qualified；
6th, repeat step (2)~(5) several times after, perform step (11)；
7th, dynamic detection is carried out, when sector management pattern is forward, up mechanical angle θ is run in direction to driving traction machine
Degree, when sector management pattern is reverse, down mechanical angle θ degree is run in direction to driving traction machine, runs mechanical angle θ degree
Afterwards, brake driver element and the power supply of variable frequency drive unit breakaway braking device and traction machine are passed through；
8th, traction sheave braking distance L2 is observed by rotary detecting circuit, and it is made comparisons with threshold value Lc2, if L2>
Lc2, it is unqualified that current sector is recorded as diagnosis by sector management unit, and performs step (10)；
9th, step (2) is performed；
10th, brake troubles detection state is exited, elevator is shut down and notifies Surveillance center；
11st, brake troubles detection state is exited, brake apparatus authentic communication is issued.
In dynamic detection, the switching between sector and dynamic detection are integrated into a pattern：Managed by sector
The transfer sequence between unit formulation sector, release brake and driving traction machine rotation are managed, when traction machine rotates certain mechanical
During angle, closure brake cuts off traction machine electrical source of power simultaneously, observes traction machine from braking distance when turning to stopping, and
Switch sector whereby.
In the embodiment above, sector management unit provides operation angle by parameter preset θ and n to Comprehensive Control unit
Guide, so that brake apparatus fault detection system can detect the mated condition between whole brake drum and brake block completely,
Wherein θ is the angle that brake drum is rotated every time, and n is the number of times that brake drum is rotated.
The situation different to three kinds, illustrates parameter θ and n calculating choosing method separately below, for purposes of illustration only, with two
Deploy explanation in case of brake shoe：
Situation one：Brake block is distributed as horizontal axial symmetry and vertical axis on brake drum
This situation is as shown in Figure 3.Its brake block is distributed as horizontal axial symmetry and vertical axis on brake drum,
If wherein lp=120 °, lm=60 °, to meetIt can be seen that n has minimum value when θ=60 °
N=3, i.e. brake drum rotate 60 ° every time, turn 2 times, the cooperation feelings between whole brake drum and brake block can be just detected completely
Condition, the detection angles domain of each sector is as shown in following formula：
Situation two：Brake block is continuously distributed on brake drum
This situation is as shown in Figure 4.Its brake block is distributed as horizontal axial symmetry on brake drum, if wherein lp=
0 °, lm=45 °, to meetIt can be seen that n has minimum value n=4, i.e. brake drum when θ=90 °
90 ° are rotated every time, turn 3 times, the mated condition between whole brake drum and brake block, the detection of each sector can be just detected completely
Angle domain is as shown in following formula：
Situation three：Other situations (situation beyond i.e. non-situation one and situation two)
If lp=60 °, lm=30 °, as shown in Figure 5.To meetIt can be seen that when θ=
N has minimum value n=6, i.e. brake drum to rotate 60 ° every time at 60 °, turns 5 times, whole brake drum and brake block can be just detected completely
Between mated condition, the detection angles domain of each sector is as shown in following formula：
To sum up, made by matching searchingWhen n minimum value, obtain parameter preset θ and
N value, wherein SQ1~SQnCalculated and obtained by following formula by lp, lm, n and θ：
Wherein, lp is the minimum angle between brake block on brake drum, and lm is single brake block on brake drum
Control for brake angle, sector SQ represents the angular range tested during the static test of sector.
Visible above, the present invention can detect the stopping power of all sectors completely, no matter there is greasy dirt in any one sector
Or get rusty, the present invention can be detected in one-time detection, accomplish to check erroneous ideas at the outset, and effectively prevent the generation of brake force failure accidents.
The technical scheme provided above the embodiment of the present invention is described in detail, specific case used herein
Principle and embodiment to the embodiment of the present invention are set forth, and the explanation of above example is only applicable to help and understands this
The principle of inventive embodiments；Simultaneously for those of ordinary skill in the art, according to the embodiment of the present invention, in specific embodiment party
It will change in formula and application, in summary, this specification content should not be construed as limiting the invention.
Claims (8)
1. a kind of brake apparatus fault detection method, it is characterised in that：
When door is closed and car is zero load, into brake apparatus fault detection status, perform as follows, until exiting system
Dynamic fault detection status：
1) by Comprehensive Control unit judges car present position, if top, then sector management pattern is by giving tacit consent to forward
It is changed to reverse；
2) Static Detection is carried out, the Static Detection is car up direction to apply direction to traction machine by frequency converter, greatly
The small torque for T, continues the t times, and skidding distance L1 and the sliding of traction sheave are obtained within the t times by rotary detecting circuit
Speed V1；
3) skidding distance L1 and threshold value Lc are made comparisons, if L1>Current sector is recorded as diagnosis and not conformed to by Lc, sector management unit
Lattice, and perform step 10)；
4) sliding velocity V1 and threshold value Vc are made comparisons, if V1>Current sector is recorded as diagnosis and not conformed to by Vc, sector management unit
Lattice, and perform step 10)；
5) sector management unit by current sector be recorded as diagnosis it is qualified；
6) repeat step 2)~5) several times after, perform step 11)；
7) dynamic detection is carried out, the dynamic detection is that driving traction machine up transport by direction when sector management pattern is forward
Row mechanical angle θ degree, when sector management pattern is reverse, down mechanical angle θ degree is run in direction to driving traction machine, runs machine
After tool angle, θ degree, by brake driver element and the power supply of variable frequency drive unit breakaway braking device and traction machine, pass through rotation
Detection unit obtains traction sheave braking distance L2；
8) traction sheave braking distance L2 is made comparisons with threshold value Lc2, if L2>Current sector is recorded as by Lc2, sector management unit
Diagnosis is unqualified, and performs step 10)；
9) step 2 is performed)；
10) brake troubles detection state is exited, elevator is shut down and notifies Surveillance center；
11) brake troubles detection state is exited, brake apparatus authentic communication is issued.
2. brake apparatus fault detection method as claimed in claim 1, it is characterised in that：
Sector management unit provides operation angle to Comprehensive Control unit by parameter preset θ and n and guided, so that brake apparatus event
Barrier detecting system can detect the mated condition between whole brake drum and brake block completely, and wherein θ is that brake drum turns every time
Dynamic angle, n is the number of times that brake drum is rotated.
3. brake apparatus fault detection method as claimed in claim 2, it is characterised in that：
The brake block quantity is 2；
Made by matching searchingWhen n minimum value, obtain parameter preset θ and n value, its
Middle SQ1~SQnCalculated and obtained by following formula by lp, lm, n and θ：
Wherein, lp is the minimum angle between brake block on brake drum, and lm is system of the single brake block on brake drum
Dynamic pilot angle, sector SQ represents the angular range tested during the static test of sector.
4. brake apparatus fault detection method as claimed in claim 1, it is characterised in that：
The variable frequency drive unit instructs according to Comprehensive Control unit and carries out speed, position, direct torque to traction machine.
5. brake apparatus fault detection method as claimed in claim 1, it is characterised in that：
The sector management unit can be examined the reliability that the action of brake block and each sector on brake drum coordinates
It is disconnected and record, and guide to Comprehensive Control unit the sector order of perform detection.
6. brake apparatus fault detection method as claimed in claim 1, it is characterised in that：
The rotary detecting circuit is rotary encoder, to detect the rotation situation of traction sheave.
7. brake apparatus fault detection method as claimed in claim 1, it is characterised in that：
By the Comprehensive Control unit detect elevator door state and cab internal load situation, when door close and car for sky
During load, Comprehensive Control unit can receive the order into brake apparatus fault detection status and enter brake apparatus fault detect shape
State.
8. brake apparatus fault detection method as claimed in claim 1, it is characterised in that：
Switching between sector is integrated into a pattern with dynamic detection.
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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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| CN105129565B true CN105129565B (en) | 2017-08-11 |
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| CN106052935B (en) * | 2016-06-29 | 2020-06-19 | 清能德创电气技术（北京）有限公司 | Method for detecting brake failure of motor band-type brake system |
| 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 |
| CN110356945B (en) * | 2018-03-26 | 2021-03-16 | 上海三菱电梯有限公司 | Wear detection device for linear motion assembly and elevator brake device |
| 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 |
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| 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 |
| CN112124285B (en) * | 2020-08-21 | 2022-04-29 | 北京汽车股份有限公司 | Failure determination method and device for vehicle braking force and vehicle |
| CN112479075B (en) * | 2020-11-26 | 2022-05-03 | 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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