CN110203794A - A kind of traction elevator wirerope fault detection method - Google Patents
A kind of traction elevator wirerope fault detection method Download PDFInfo
- Publication number
- CN110203794A CN110203794A CN201910615983.2A CN201910615983A CN110203794A CN 110203794 A CN110203794 A CN 110203794A CN 201910615983 A CN201910615983 A CN 201910615983A CN 110203794 A CN110203794 A CN 110203794A
- Authority
- CN
- China
- Prior art keywords
- wirerope
- fault detection
- detection method
- traction elevator
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- B66B5/0037—Performance analysers
-
- 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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
- B66B7/1207—Checking means
- B66B7/1215—Checking means specially adapted for ropes or cables
- B66B7/123—Checking means specially adapted for ropes or cables by analysing magnetic variables
Abstract
The invention discloses a kind of traction elevator wirerope fault detection methods, belong to fault detection technique field, include the following steps: the mounting clamping device on more wirerope, carry out excitation processing to more wirerope by excitation unit；Using the Magnetic Field on detection device acquisition wirerope, pretreatment is carried out to Magnetic Field by amplifier and analog input card and forms echo signal；Echo signal is handled with small echo and improved moving average method respectively, and the signal that two methods determine is subjected to summation and is averaged to obtain final signal.The characteristic information of final signal is compared with database in LabView system, determines the degree of fault type and damage, record simultaneously early warning to the characteristic point for being more than preset threshold.A kind of traction elevator wirerope fault detection method provided by the invention, operating procedure is simple, and detection accuracy is higher, and the result property of can refer to detected is stronger.
Description
Technical field
The invention belongs to fault detection technique fields, are to be related to a kind of traction elevator wirerope failure more specifically
Detection method.
Background technique
Wirerope is widely used in mine, passenger and freight cableway, suspension bridge, building and harbour as the key member that engineering carries
The numerous areas of the equal developments of the national economy, by environmental corrosion, uncertain alternating load, mechanical shock during long-term operation
With the influence of abrasion etc., it may appear that fracture of wire, abrasion, corrosion equivalent damage, accumulating over a long period leads to strength reduction even fracture suddenly, peace
Full accident happens occasionally.The safe condition of wirerope is most important safely for the production of relevant industries and human life.Steel wire
The detection work of rope is essential.Structure is complicated for existing testing device for wire ropes, and detection accuracy is lower, the knot detected
Fruit can not react the damaged condition of wirerope very well, thus can not testing staff strong data be provided support.
Summary of the invention
The purpose of the present invention is to provide a kind of traction elevator wirerope fault detection methods, it is intended to solve detection device
Structure is complicated, and detection accuracy is lower, the poor problem of the result property of can refer to detected.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of wirerope fault detection method is provided, including
Following steps:
The mounting clamping device on more wirerope carries out excitation processing to the more wirerope by excitation unit；
The Magnetic Field on the wirerope is acquired using detection device, the magnetic field is believed by amplifier and analog input card
Breath carries out pretreatment and forms echo signal；
The echo signal is handled with small echo and improved moving average method respectively, and two methods are determined
Signal carry out summation be averaged to obtain final signal；
The characteristic information of the final signal is compared with database in LabView system, determines fault type
And the degree of damage, record simultaneously early warning to the characteristic point for being more than preset threshold.
Further, the clamping device includes:
Clip seat, both ends are equipped with slot；With
Fastener, both ends are equipped with the plug cooperated with the slot, and are formed and be used between the clip seat and the fastener
Accommodate the accommodating chamber of the wirerope；
Multiple clamping elements are symmetricly set in the accommodating chamber, for clamping the wirerope.
Further, the clamping element includes:
Support plate, one end are fixed on the inner wall of the clip seat and the fastener；With
Idler wheel, it is hinged with the other end of the support plate, and the idler wheel outer peripheral surface is equipped with for supporting with the wirerope
The groove connect.
Further, further includes:
Multiple threaded posts are vertically fixed on the outer wall of the clip seat and the fastener；With
Turning set is threadedly coupled with the threaded post；
The clamping element clamps the wirerope by fastening force of the threaded post to the clip seat and fastener.
Further, the excitation unit includes:
Annular magnetic conductance seat；
Two groups of permanent magnets, one group is fixed on the inner wall of the annular magnetic conductance seat upper end, another group be fixed on it is described
On the inner wall of annular magnetic conductance seat lower end, permanent magnet described in every group is symmetrical and polarity is identical, and difference organizes the permanent magnet polarity
On the contrary；With
Magnetizer is corresponded with each permanent magnet, is fixed on the inner wall of the permanent magnet；
The magnetic field that the magnetizer is generated by the permanent magnet is by the wirerope excitation.
Further, the detection device includes:
Two pcb boards between permanent magnet described in two groups, and are vertically plugged on the inner wall of the annular magnetic conductance seat,
The groove of multiple same specifications is offered on the pcb board side by side, two grooves, which are spliced into, is disposed around the wirerope periphery
Detection ring；With
Multiple Hall elements are evenly distributed on the detection ring.
Further, the Hall element is electrically connected by the electric elements on the pcb board with the amplifier.
Further, the model LM224 of the amplifier.
Further, the small echo uses db10 wavelet basis.
Further, the improved moving average method the following steps are included:
Continuous sampling n times, and Wave data is respectively stored in corresponding array XiIn [M] (wherein i=1,2 ..., N)；
Carry out primary new sampling (i > N), i.e. XI=1[j]=Xi[j] (wherein i=2,3 ..., N), wherein XN[M] is used for
Store a newest Wave data value；
It seeks N number of Wave data average value and is stored in array X [M], i.e.,(wherein j=1,
2,3,…,M)；
According to the weighting coefficient of each array, weighted average is sought, i.e.,
Calculate the variance S of adjacent signal level2, i.e.,
Work as S2< 1, then it is assumed that section is that approximation is stable, and window size is determined as n；If S2> 1 reduces the value of n, until
Until approximate steady or n the value in section is decreased to 1.
The beneficial effect of wirerope fault detection method provided by the invention is: compared with prior art, the present invention one
Kind traction elevator wirerope fault detection method will be clamped mostly with wirerope by clamping device and be stablized, to reduce
Because shaking the influence to testing result in wirerope motion process, and excitation mostly will be carried out with wirerope by excitation unit,
The magnetic field signal detected is amplified by the magnetic field signal of detection device detection leakage, and by amplifier, and by acquiring
Board is to amplified signal and is stored to obtain echo signal.Echo signal is used to small echo and improved rolling average respectively
Value method handles the signal of storage, and the signal that two methods determine is carried out summation and is averaged to obtain final signal, and
The characteristic information of final signal is compared with database in LabView system, determines fault type and the steel wire
The degree of rope damage record simultaneously early warning to the characteristic point for being more than preset threshold.Pass through small echo and improved moving average
After the denoising of method, signal burr can not be solved the problems, such as when not only having avoided small echo processing, but also reduce moving average method
The larger problem of signal distortion passes through by the way that signal is analyzed and processed in LabView system by treated and analyzes wave
Shape feature is simultaneously compared with the characteristic point in database, the height of fault type and degree is determined, in conjunction with LabView system
In threshold value prompting function, to facilitate testing staff to grasp the operating status of wirerope in time, and can be accurately to fault message
Processing and early warning are carried out, to reduce the frequency of accident generation, improves safety.
Detailed description of the invention
Fig. 1 is a kind of process flow diagram flow chart of traction elevator wirerope fault detection method provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of clamping device provided in an embodiment of the present invention；
Fig. 3 is the left view of clamping device provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of excitation unit provided in an embodiment of the present invention；
Fig. 5 is two pcb board connection schematic diagrams provided in an embodiment of the present invention；
Fig. 6 is that the present invention improves method of moving average algorithm flow chart.
In figure: in figure: 1, wirerope；2, clip seat；3, fastener；4, idler wheel；5, turning set；6, threaded post；7, annular is led
Magnetic support；8, permanent magnet；9, magnetizer；10, pcb board；11, Hall element；12, support plate.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Fig. 1-6 is please referred to, now a kind of traction elevator wirerope fault detection method provided by the invention is illustrated,
Include the following steps: the mounting clamping device on more wirerope 1, more wirerope 1 are carried out at excitation by excitation unit
Reason；Using the magnetic field signal on detection device acquisition wirerope 1, collected signal is carried out by amplifier and analog input card pre-
PC machine is processed and transmitted to be stored；The signal of storage is carried out at denoising with small echo and improved moving average method respectively
Reason, and the signal that two methods determine is subjected to summation and is averaged；By the characteristic information of acquired signal in LabView system
It is compared with database, determines the degree that fault type and wirerope 1 damage, the characteristic point for being more than preset threshold is carried out
Record simultaneously early warning.
The beneficial effect of 1 fault detection method of wirerope provided by the invention is: compared with prior art, the present invention one
Kind traction elevator wirerope fault detection method will be clamped mostly with wirerope 1 by clamping device and be stablized, to reduce
Because shaking the influence to testing result in 1 motion process of wirerope, and will mostly be encouraged with wirerope 1 by excitation unit
Magnetic amplifies the magnetic field signal detected by the magnetic field signal of detection device detection leakage, and by amplifier, and by adopting
Collection board is stored to obtain echo signal to amplified signal.Echo signal is used to small echo and improved rolling average respectively
Value method carries out denoising to the signal of storage, and the signal that two methods determine is carried out summing to be averaged finally being believed
Number, and be compared the characteristic information of final signal with database in LabView system, determine fault type and steel wire
The degree of 1 damage of rope, record simultaneously early warning to the characteristic point for being more than preset threshold.Pass through small echo and improved moving average
After the denoising of method, signal burr can not be solved the problems, such as when not only having avoided small echo processing, but also reduce moving average method
The larger problem of signal distortion passes through by the way that signal is analyzed and processed in LabView system by treated and analyzes wave
Shape feature is simultaneously compared with the characteristic point in database, the height of fault type and degree is determined, in conjunction with LabView system
In threshold value prompting function, to facilitate testing staff to grasp the operating status of wirerope 1 in time, and can be accurately to fault message
It carries out processing and early warning and improves safety to reduce the occurrence frequency of accident.
As a kind of a kind of specific embodiment of traction elevator wirerope fault detection method provided by the invention, ask
Refering to Fig. 2-3, clamping device includes: fastener 32, fastener 3 and multiple clamping elements；32 both ends of fastener are equipped with slot；Fastener 3
Both ends are equipped with the plug cooperated with slot, and fastener 32 accommodating chambers formed between fastener 3 for accommodating wirerope 1；It is more
A clamping element, is symmetricly set in accommodating chamber, is used for clamping steel wire rope 1.Fastener 3 is fixed with clip seat 2 by plug and slot,
Fastener 3 and clip seat 2 are equipped with the groove for accommodating wirerope 1, and the splicing of two components is so as to form for mostly with wirerope 1
The channel passed through, and fastener may be configured as 4, in the coplanar setting 2 in the outer surface of fastener 3, in the outer surface of clip seat 2
It is coplanar to be correspondingly arranged 2, clamping element is fixedly installed between fastener 3 and clip seat 2, clamping element is symmetrically distributed in wirerope
1 two sides will be mostly fixedly clamped with wirerope 1 by clip seat 2 and fastener 3.Clamping device installation is simple, convenient disassembly,
And clip seat 3 and fastener 2 have adjusting surplus when fastening, and by clamping wirerope 1, run to reduce in wirerope 1
The shaking generated in the process reduces influence of other disturbing factors to experimental result, ensure that the precision of detection.
As a kind of a kind of specific embodiment of traction elevator wirerope fault detection method provided by the invention, ask
Refering to Fig. 2-3, clamping element includes: support plate 12 and idler wheel 4；12 one end of support plate is fixed on the inner wall of clip seat 2 and fastener 3
On；Idler wheel 4 and the other end of support plate 12 are hinged, and 4 outer peripheral surface of idler wheel is equipped with the groove for abutting with wirerope 1.It is multiple
Clamping element is symmetricly set on the length direction of 3 inner surface of clip seat 2 and fastener, and end is hinged with for rotating with wirerope 1
The idler wheel 4 of abutting, and 4 outer peripheral surface of idler wheel is equipped with the groove for storing wirerope 1；Clamping element end is equipped with and connects with wirerope 1
The idler wheel 4 of touching, opens up fluted on idler wheel 4, increases the contact area of idler wheel 4 Yu groove, and it is axial to reduce wirerope 1
It shakes, device disassembly is easy, and it is fixed, it can greatly reduce influence of the shaking to experimental result of wirerope 1.
As a kind of a kind of specific embodiment of traction elevator wirerope fault detection method provided by the invention, ask
Refering to Fig. 2-3, further includes: multiple threaded posts 6 and turning set 5；Multiple threaded posts 6 are vertically fixed on the outer of clip seat 2 and fastener 3
On wall；Turning set 5 is threadedly coupled with threaded post 6；Clamping element clamps wirerope 1 by turning set 5.Threaded post 6 can be 4,
2 are fixedly connected on 2 outer wall of clip seat, 2 are fixedly connected on 3 outer wall of fastener, turning set 5 and 6 screw thread of threaded post connect
It connecing, fastener includes threaded post 6 and turning set 5, by rotation turning set 5 until being abutted with the side wall of 1 hoistway mouth of wirerope, from
And fastener 3 and clip seat 2 are fixed on 1 hoistway mouth of wirerope, while rotating the turning set 5 of opposite two sides, wirerope 1 is pressed from both sides
Tightly, reduce the shaking generated in running process of elevator, while reducing the influence to experimental result.
As a kind of a kind of specific embodiment of traction elevator wirerope fault detection method provided by the invention, ask
Refering to Fig. 4, excitation unit includes: two annular 7, two groups of permanent magnets 8 of magnetic conductance seat and multiple magnetizers 9；Two annular magnetic conductance seats 7
It is spliced to form the containing cavities for storing multiple wirerope 1；Two groups 8 one groups of permanent magnet are fixed at the upper of annular magnetic conductance seat 7
On the inner wall at end, on the inner wall of another group of lower end for being fixed on annular magnetic conductance seat 7, every group of permanent magnet 8 be symmetrical and polarity phase
Together, different group 8 polarity of permanent magnet are opposite.Multiple magnetizers 9 correspond with each permanent magnet 8, are fixed at permanent magnet 8
Inner wall on.The energized circuit that magnetizer 9 is formed by different groups of permanent magnets 8 is by 1 excitation of wirerope.In clamping device to steel wire
After rope 1 clamps, excitation unit is installed in the top of clamping device, two annular magnetic conductance seats 7 are used to mention internal permanent magnet 8
For support, annular magnetic conductance seat 7 is disposed vertically, the cavity passed through between two annular magnetic conductance seats 7 for wirerope 1, in annular
The upper end of magnetic conductance seat 7 is fixed with one group of permanent magnet 8, and is fixedly installed another group of permanent magnet 8 in lower end.Every group of permanent magnet 8
Polarity it is identical, and the polarity of different group permanent magnet 8 is fixedly installed on permanent magnet 8 on the contrary, so as to form field circuit
Magnetizer 9, the side of magnetizer 9 and being closer for wirerope 1, and a magnetizer is mounted on each permanent magnet 8
9, consequently facilitating the magnetic field that permanent magnet 8 generates is conducted, by the way that with magnet permanent excitation can be carried out to wirerope 1,
And consuming energy, magnetic field are not transmitted to wirerope 1 by magnetizer 9 to excitation process, and in 1 motion process of wirerope,
It still is able to lasting excitation, consequently facilitating detecting the fault message of wirerope 1.
As a kind of a kind of specific embodiment of traction elevator wirerope fault detection method provided by the invention, ask
Refering to Fig. 4-5, detection device includes: two pcb boards 10 and multiple Hall elements 11；Two pcb boards 10 are horizontally set on two groups
Between permanent magnet 8, pcb board 10 is connect by connecting rod with the inner wall of annular magnetic conductance seat 7, and is offered side by side on pcb board 10 more
The groove of a same specification, two grooves are spliced into the detection ring for being disposed around 1 periphery of wirerope；Multiple Hall elements 11 are uniformly distributed
On detection ring；Hall element 11 is electrically connected by the electric elements on pcb board 10 with amplifier.Pcb board 10 is led by annular
The spliced eye of 7 top of magnetic support is plugged on annular magnetic conductance seat 7, after wirerope 1 is excited, that is, carries out Magnetic Flux Leakage Inspecting, pcb board
Open up fluted on 10, semicircle in the groove and center of circle is overlapped with the axle center of wirerope 1, and two pcb boards 10 are spliced into and steel wire
It restricts 1 concentric detection ring, detects and install multiple along the equally distributed Hall element 11 in 1 periphery of wirerope on ring, pass through Hall member
The Magnetic Field of the detection leakage of part 11, and Hall element 11 is electrically connected with the electric elements on pcb board 10, and magnetic field signal is passed
Be directed on amplifier, the Hall element 11 on pcb board 10 apart from wirerope 1 apart from shorter, convenient for capturing sufficient intensity volume magnetic field
PCB need to only be extracted out from annular magnetic conductance seat 7 after detection is completed, be facilitated installation and detection effect is good by information
Good, 11 circumferential array of Hall element is around 1 wirerope 1 of wirerope, comprehensive detection, no missing inspection, and testing result is accurate, along steel
The circumferentially distributed Hall element 11 of cord 1 can be 6, be mounted on 3 Hall elements 11 on the groove that each PCB is opened up, from
And the detection ring circumferential around wirerope 1 is formed, convenient for detecting magnetic field signal from all directions, single wire rope 1 uses permanent magnet 8
Double loop excitation, the N of two blocks of magnet in this circuit, S is extremely oppositely positioned, this device is detected by the excitation of several single wire ropes 1
Device is composed, and magnetic isolation plate is provided between every wirerope 1, is not interfere with each other between 1 magnetic circuit of single wire rope.
As a kind of a kind of specific embodiment of traction elevator wirerope fault detection method provided by the invention, put
The model LM224 of big device.Collected fault-signal after amplifier LM224 pretreatment, is made to acquire by Hall element 11
To signal be able to carry out enhanced processing, consequently facilitating it is subsequent acquisition and processing.
As a kind of a kind of specific embodiment of traction elevator wirerope fault detection method provided by the invention, adopt
Integrate board as NI analog input card, which can store a large amount of shape information in time, and loss of signal rate is smaller, acquire by NI
Board transmits a signal to PC machine.
It is small as a kind of a kind of specific embodiment of traction elevator wirerope fault detection method provided by the invention
Wave uses db10 wavelet basis, and the present invention selects db10 wavelet basis to carry out 5 layers of decomposition, and db10 wavelet basis has near symmetry, just
The property handed over, compact sup-port have good application in signal noise silencing processing, and the signal-to-noise ratio of 5 layers of decomposed signal is relatively high, Decomposition order
Too much, the distortion factor of signal is larger, and it is unobvious that Decomposition order denoises effect very little.
In the present invention, due to the difference of wavelet basis, corresponding signal handling capacity and processing mode are variant.It can basis
Different wirerope operating statuses select different wavelet basis, record wavelet basis corresponding to different service lives in the database
Type, to realize targetedly signal processing.
In the present invention, it is the incident fault type of wirerope 1 that fault type, which is fracture of wire, abrasion and corrosion, and will
It, can be according to the difference of time domain waveform, to judge steel wire in fracture of wire, abrasion and the fault characteristic information of corrosion input value database
Which kind of fault type rope 1 is, summarises the most fault types of wirerope 1, facilitates later period comparative analysis.
It is special as a kind of a kind of specific embodiment of traction elevator wirerope fault detection method provided by the invention
Reference breath more can be determined accurately comprising area under peak value, peak-to-peak value, waveform widths and waveform by comparing information above
The type that wirerope 1 breaks down.The damage type of wirerope 1 is mostly outer layer fracture of wire, the final embodiment of abrasion and corrosion failure
Form is also fracture of wire, and to the signal extraction signal characteristic after de-noising and smooth treatment, characteristic type includes that wirerope 1 is straight
Area under diameter, steel wire diameter, peak value, peak-to-peak value, waveform widths and waveform selects multiple signal characteristics to be more advantageous to wirerope
1 filament failure accurately determines that the signal characteristic extracted is compared from the data characteristics of fracture of wire degree different in database, can
To determine fracture of wire degree, the setting of 1 threshold value of wirerope needs to be determined according to 1 diameter of wirerope, exceeds from fracture of wire and sets
Sending pre-alert notification is marked in the characteristic point for determining threshold value, with timely replacement problem wirerope 1, guarantees the safe operation of elevator.
In the present invention, the ITD that obtained final signal can improve is decomposed and slice double-spectrum analysis, improvement ITD divide
Solution can be by Newton interpolation method come the envelope of analog signal, and Newton interpolation method can reduce in 1 detection process of wirerope
Generated noise signal, and then the identification degree of signal is improved, while frequency is carried out by slice bispectrum after improving ITD and decomposing
Spectrum analysis, since the shape informations of signal caused by fault types such as fracture of wire and corrosion are different, corresponding frequency is also different, passes through
Fault type caused by wirerope 1 can accurately be determined by crossing improvement ITD and slice bispectrum, to be provided with for testing staff
The data of power are supported.
As a kind of a kind of specific embodiment of traction elevator wirerope fault detection method provided by the invention, in advance
If threshold value is determined according to the diameter of wirerope 1, it is stored with the threshold value of different 1 diameters of wirerope respectively in the database, it can basis
The diameter of live wirerope 1 flexibly and easily selects.
The present invention also provides improved moving average methods, comprising the following steps:
Continuous sampling n times, and Wave data is respectively stored in corresponding array XiIn [M] (wherein i=1,2 ..., N)；
Carry out primary new sampling (i > N), i.e. XI=1[j]=Xi[j] (wherein i=2,3 ..., N), wherein XN[M] is used for
Store a newest Wave data value；
It seeks N number of Wave data average value and is stored in array X [M], i.e.,(wherein j=1,
2,3,…,M)；
According to the weighting coefficient of each array, weighted average is sought, it may be assumed that
Calculate the variance S of adjacent signal level2, i.e.,
Work as S2< 1, then it is assumed that section is that approximation is stable, and window size is determined as n；If S2> 1 reduces the value of n, until
Until approximate steady or n the value in section is decreased to 1.
A kind of improved moving average method provided by the invention can be in the letter for rationally inhibiting different frequency range different time
In the case where number ambient noise, the waveform signal sought out according to the weighted average found out can preferably retain original signal
Intrinsic frequency and retain true value, and filter sensitivity it is higher, obtained weighted average X be according to each array multiplied by
Respective weighting coefficient acquires, and avoids the case where effective waveform is filtered when directly taking mean value, so as to more fully open up
Show original feature of signal.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in this practical invention
Spirit and principle within made any modifications, equivalent replacements, and improvements etc., should be included in protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of traction elevator wirerope fault detection method, which comprises the steps of:
The mounting clamping device on more wirerope carries out excitation processing to the more wirerope by excitation unit；
Acquire the Magnetic Field on the wirerope using detection device, by amplifier and analog input card to the Magnetic Field into
Row pretreatment forms echo signal；
The letter that the echo signal is handled with small echo and improved moving average method respectively, and two methods are determined
Summation number is carried out to be averaged to obtain final signal；
The characteristic information of the final signal is compared with database in LabView system, determine fault type and
The degree of damage record simultaneously early warning to the characteristic point for being more than preset threshold.
2. a kind of traction elevator wirerope fault detection method as described in claim 1, which is characterized in that the clamping dress
It sets and includes:
Clip seat, both ends are equipped with slot；
Fastener, both ends are equipped with the plug cooperated with the slot, and are formed between the clip seat and the fastener for accommodating
The accommodating chamber of the wirerope；With
Multiple clamping elements are symmetricly set in the accommodating chamber, for clamping the wirerope.
3. a kind of traction elevator wirerope fault detection method as claimed in claim 2, which is characterized in that the clamping element
Include:
Support plate, one end are fixed on the inner wall of the clip seat and the fastener；With
Idler wheel, it is hinged with the other end of the support plate, and the idler wheel outer peripheral surface is equipped with for abutting with the wirerope
Groove.
4. a kind of traction elevator wirerope fault detection method as claimed in claim 2, which is characterized in that further include:
Multiple threaded posts are vertically fixed on the outer wall of the clip seat and the fastener；With
Turning set is threadedly coupled with the threaded post；
The clamping element clamps the wirerope by fastening force of the threaded post to the clip seat and fastener.
5. a kind of traction elevator wirerope fault detection method as described in claim 1, which is characterized in that the excitation dress
It sets and includes:
Annular magnetic conductance seat；
Two groups of permanent magnets, one group is fixed on the inner wall of the annular magnetic conductance seat upper end, and another group is fixed on the annular
On the inner wall of magnetic conductance seat lower end, permanent magnet described in every group is symmetrical and polarity is identical, and it is opposite that difference organizes the permanent magnet polarity；
With
Magnetizer is corresponded with each permanent magnet, is fixed on the inner wall of the permanent magnet；
The magnetic field that the magnetizer is generated by the permanent magnet is by the wirerope excitation.
6. a kind of traction elevator wirerope fault detection method as claimed in claim 5, which is characterized in that the detection dress
It sets and includes:
Two pcb boards among permanent magnet described in two groups, and are vertically plugged on the inner wall of the annular magnetic conductance seat, described
The groove of multiple same specifications is offered on pcb board side by side, two grooves are spliced into the inspection for being disposed around the wirerope periphery
Survey ring；With
Multiple Hall elements are evenly distributed on the detection ring.
7. a kind of traction elevator wirerope fault detection method as claimed in claim 6, which is characterized in that the Hall member
Part is electrically connected by the electric elements on the pcb board with the amplifier.
8. a kind of traction elevator wirerope fault detection method as described in claim 1, which is characterized in that the amplifier
Model LM224.
9. a kind of traction elevator wirerope fault detection method as described in claim 1, which is characterized in that the small echo is adopted
With db10 wavelet basis.
10. a kind of traction elevator wirerope fault detection method as described in claim 1, which is characterized in that the improvement
Moving average method the following steps are included:
Continuous sampling n times, and Wave data is respectively stored in corresponding array XiIn [M] (wherein i=1,2 ..., N)；
Carry out primary new sampling (i > N), i.e. XI=1[j]=Xi[j] (wherein i=2,3 ..., N), wherein XN[M] is for storing most
A new Wave data value；
It seeks N number of Wave data average value and is stored in array X [M], i.e.,(wherein j=1,2,
3,…,M)；
According to the weighting coefficient of each array, weighted average is sought, it may be assumed that
Calculate the variance S of adjacent signal level2, i.e.,
Work as S2< 1, then it is assumed that section is that approximation is stable, and window size is determined as n；If S2> 1 reduces the value of n, until section
Until approximate steady or n value is decreased to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910615983.2A CN110203794B (en) | 2019-07-09 | 2019-07-09 | Traction type elevator steel wire rope fault detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910615983.2A CN110203794B (en) | 2019-07-09 | 2019-07-09 | Traction type elevator steel wire rope fault detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110203794A true CN110203794A (en) | 2019-09-06 |
| CN110203794B CN110203794B (en) | 2021-03-16 |
Family
ID=67796836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910615983.2A Active CN110203794B (en) | 2019-07-09 | 2019-07-09 | Traction type elevator steel wire rope fault detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110203794B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596197A (en) * | 2019-09-18 | 2019-12-20 | 日立电梯（中国）有限公司 | Connecting device for detecting steel rope in steel belt |
| CN110980471A (en) * | 2019-12-31 | 2020-04-10 | 界首市迅立达电梯有限公司 | Elevator hauler wire rope state early warning system based on thing networking |
| CN112225024A (en) * | 2020-10-28 | 2021-01-15 | 中建七局第一建筑有限公司 | Traction type elevator fault analysis method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB306232A (en) * | 1927-12-20 | 1929-02-21 | Thomas Frederick Wall | Electro-magnetic testing of steel wire ropes and other articles of magnetisable material |
| WO2000058706A2 (en) * | 1999-03-29 | 2000-10-05 | Otis Elevator Company | Method and apparatus for detecting elevator rope degradation using electrical or magnetic energy |
| CN2612951Y (en) * | 2003-04-09 | 2004-04-21 | 辽宁石油化工大学 | Intelligent elevator wire rope detecting instrument |
| JP2014062745A (en) * | 2012-09-20 | 2014-04-10 | Sensor System Co Ltd | Thickness inspection device of magnetic heterogeneous layer formed over the surface of base material |
| CN104458892A (en) * | 2014-12-08 | 2015-03-25 | 厦门大学 | Defect detecting device for steel profile |
| CN106124613A (en) * | 2016-07-26 | 2016-11-16 | 北京工业大学 | Elevator wire rope fracture of wire based on radio network technique monitoring system |
| CN205820603U (en) * | 2016-06-08 | 2016-12-21 | 宿迁学院 | A kind of elevator dragging wire rope defect detecting system |
| CN109490407A (en) * | 2018-12-12 | 2019-03-19 | 武汉瑞敏检测科技有限公司 | A kind of steel wire nondestructive detection device |
-
2019
- 2019-07-09 CN CN201910615983.2A patent/CN110203794B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB306232A (en) * | 1927-12-20 | 1929-02-21 | Thomas Frederick Wall | Electro-magnetic testing of steel wire ropes and other articles of magnetisable material |
| WO2000058706A2 (en) * | 1999-03-29 | 2000-10-05 | Otis Elevator Company | Method and apparatus for detecting elevator rope degradation using electrical or magnetic energy |
| CN2612951Y (en) * | 2003-04-09 | 2004-04-21 | 辽宁石油化工大学 | Intelligent elevator wire rope detecting instrument |
| JP2014062745A (en) * | 2012-09-20 | 2014-04-10 | Sensor System Co Ltd | Thickness inspection device of magnetic heterogeneous layer formed over the surface of base material |
| CN104458892A (en) * | 2014-12-08 | 2015-03-25 | 厦门大学 | Defect detecting device for steel profile |
| CN205820603U (en) * | 2016-06-08 | 2016-12-21 | 宿迁学院 | A kind of elevator dragging wire rope defect detecting system |
| CN106124613A (en) * | 2016-07-26 | 2016-11-16 | 北京工业大学 | Elevator wire rope fracture of wire based on radio network technique monitoring system |
| CN109490407A (en) * | 2018-12-12 | 2019-03-19 | 武汉瑞敏检测科技有限公司 | A kind of steel wire nondestructive detection device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596197A (en) * | 2019-09-18 | 2019-12-20 | 日立电梯（中国）有限公司 | Connecting device for detecting steel rope in steel belt |
| CN110980471A (en) * | 2019-12-31 | 2020-04-10 | 界首市迅立达电梯有限公司 | Elevator hauler wire rope state early warning system based on thing networking |
| CN112225024A (en) * | 2020-10-28 | 2021-01-15 | 中建七局第一建筑有限公司 | Traction type elevator fault analysis method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110203794B (en) | 2021-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110203794A (en) | A kind of traction elevator wirerope fault detection method | |
| CN106934421B (en) | Power transformer fault detection method based on 2DPCA and SVM | |
| CN106290553B (en) | Novel electromagnetic sensor system for detecting defects of steel wire rope | |
| CN108333252A (en) | A kind of wire rope flaw detection system and its magnetic leakage signal detection device | |
| JP4179141B2 (en) | Wire rope magnetic flaw detector | |
| CN103048379A (en) | Device and method for recognizing damage to bridge stay cable | |
| CN205620270U (en) | Online fluid metal particles detector | |
| CN206772899U (en) | The open magnetic pumping steel wire rope damage detection apparatus that declines of one kind | |
| CN109682824B (en) | Image fusion-based steel wire rope nondestructive testing method and device | |
| WO2013014533A2 (en) | Method and apparatus for ferromagnetic cable inspection | |
| CN109557174B (en) | Elevator traction steel wire rope residual life online prediction system and method | |
| CN110108790A (en) | A kind of in-service Pulsed eddy current testing device and method of mining hoisting steel wire rope damage | |
| CN105717191A (en) | Detection method and device for magnetic Barkhausen noise signal and magnetic parameters | |
| CN111855794A (en) | Steel wire rope flaw detection system and flaw detection method thereof | |
| WO2020246130A1 (en) | Wire rope examination system and wire rope examination method | |
| Zhou et al. | Detecting and locating local flaws based on magnetic flux leakage imaging for wire ropes | |
| CN107328851B (en) | Ferromagnetic slender component nondestructive testing device based on improved coil | |
| CN205719352U (en) | A kind of fly line load monitoring system | |
| CN214174235U (en) | Steel wire rope defect rapid detection device under narrow working condition | |
| CN211453461U (en) | Steel wire rope damage detection device | |
| CN117607244B (en) | Multi-sensitive-array crane steel wire rope flux weakening on-line monitoring method and system | |
| CN1405558A (en) | Magnectic-conductive member end-part defect detection device | |
| CN106124611B (en) | A kind of damage detection apparatus and method of ferrimagnet | |
| JP2005164423A (en) | Magnetic flaw detection apparatus for wire rope, and pulley with magnetic flaw detection apparatus | |
| KR102621957B1 (en) | Portable Sling Belt Damage Diagnosis Apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |