CN107430090A - Cord damage deagnostic test device and cord damage deagnostic test method - Google Patents
Cord damage deagnostic test device and cord damage deagnostic test method Download PDFInfo
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- CN107430090A CN107430090A CN201580077392.4A CN201580077392A CN107430090A CN 107430090 A CN107430090 A CN 107430090A CN 201580077392 A CN201580077392 A CN 201580077392A CN 107430090 A CN107430090 A CN 107430090A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9013—Arrangements for scanning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
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Abstract
Have：1st yoke, it applies the magnetic field for making rope turn into magnetic saturation state；Alternating magnetic field applicator, it applies alternating magnetic field to the axial direction of rope by providing axial coil constant current, makes to produce vortex and eddy current magnetism in rope；And controller, it to the rope due to the 1st yoke and as magnetic saturation state during alternating magnetic field is applied, detect rope whether there is breakage according to the measurement result of the size of the leakage magnetic flux of rope, the sectional area of rope is calculated according to the measurement result of the voltage to be changed due to the caused eddy current magnetism in the axial direction of rope, and the shape anomaly of rope is checked according to damaged and sectional area is whether there is.
Description
Technical field
The cord damage diagnosis of the elevator reduced the present invention relates to the breakage for the rope for checking suspention lift car or diameter
The cord damage deagnostic test method of check device and elevator.
Background technology
The prior art of cord damage is detected in the presence of the iron core using E word shapes (for example, referring to patent document 1).Should
The iron core (3) of E word shapes in patent document 1 has 3 legs (31,32,33), in the bottom surface of these legs formed with U-shaped
The groove (31U, 32U, 33U) of shape.In addition, being wound with excitation coil (41,42) on iron core (3), rolled up on leg (33)
It is wound with detection coil (43).
When checking, using as in the wirerope of check object (2) embedded groove (31U, 32U, 33U), by excitation coil
(41,42) make iron core (3) mobile along wirerope (2) in the state of being connected with AC power.Then, when leg (33) pass through wirerope
(2) during pars affecta (21), voltage can be produced in detection coil (43), thus, it is possible to detect pars affecta (21).
In the patent document 1, because iron core is by AC power excitation, therefore, and even if iron core stops, the wirerope of the part
Also it will not magnetize, the flaw detection that precision is higher, reliability is higher can be carried out.
Citation
Patent document
Patent document 1：Japanese Unexamined Patent Publication 10-19852 publications
The content of the invention
The invention problem to be solved
However, following following problem in the prior art be present.
In patent document 1, because the magnetic characteristic of rope is also resulted in and produced from detection with coil in addition to the shape of damage
Raw output changes.Therefore, although the detection that can be damaged, due to the deviation of the magnetic characteristic of rope, exist
Also detect the possibility of situation beyond damage.
In other words, there is the shape anomaly (line of the magnetic characteristic deviation for detecting rope rather than rope in such prior art
Material is damaged, diameter reduces) possibility.Asked as a result, accuracy of detection be present and reduce or be difficult to the quantitative etc. of degree of injury
Topic.
The present invention completes to solve above-mentioned problem, can be independent of magnetic characteristic the purpose is to obtain one kind
In the case of deviation, the cord damage diagnosis inspection of the shape anomaly of rope quantitatively and than prior art is more precisely detected
Look into device and cord damage deagnostic test method.
Means for solving the problems
The cord damage deagnostic test device of the present invention is that the shape anomaly for suspending the rope of lift car in midair is checked
Device, wherein, the cord damage deagnostic test device has：1st yoke, it is installed on rope, and rope is applied and is used for
Rope is set to turn into the magnetic field of magnetic saturation state；1st ac current source, it exports AC constant current；Alternating magnetic field applicator, its
It is configured to that there is axial coil, the alternating magnetic field applicator is by providing constant current from the 1st ac current source to axial coil
And alternating magnetic field is applied to the axial direction of rope so that vortex and eddy current magnetism are produced in rope；Leakage magnetic flux tester, it is to rope
Leakage magnetic flux of the rope during the application of alternating magnetic field is measured；1st voltage determination device, it determines axial coil in alternation magnetic
Voltage during the application of field；And controller, it controls alternating magnetic field applicator, thus to turning into due to the 1st yoke
The rope of magnetic saturation state applies alternating magnetic field, and rope is detected according to the size of the leakage magnetic flux measured by leakage magnetic flux tester
Breakage is whether there is, according to the voltage determined by the 1st voltage determination device, the section of rope is calculated as the value proportional to voltage
Product, and check the shape anomaly of rope according to damaged and sectional area is whether there is.
In addition, the cord damage deagnostic test method of the present invention is carried out to suspending the shape anomaly of the rope of lift car in midair
The method of inspection, wherein, have：1st step, in the 1st step, rope is applied for making rope turn into magnetic saturation state
Magnetic field；Second step, in the second step, to applying alternating magnetic field as the rope of magnetic saturation state；Third step, the third step
In, leakage magnetic flux of the measurement rope during alternating magnetic field application；4th step, in the 4th step, according to the leakage field measured
Logical size detects rope whether there is breakage；5th step, in the 5th step, determine during alternating magnetic field application due to
Caused eddy current magnetism in the axial direction of rope and the voltage to change；6th step, in the 6th step, as with determining
The proportional value of voltage and calculate the sectional area of rope；And the 7th step, in the 7th step, obtained according to by the 4th step
The presence or absence of the result of calculation of damaged testing result and the sectional area obtained by the 6th step judge that the shape of rope is different
Often.
Invention effect
According to the present invention, there is structure as follows：To applying alternating magnetic field as the rope of magnetic saturation state, applying
During adding alternating magnetic field, detect rope whether there is breakage according to the measurement result of the leakage magnetic flux size of rope, according to due to
The caused eddy current magnetism in the axial direction of rope and the measurement result of voltage that changes calculate the sectional area of rope, and according to
Damaged and sectional area is whether there is to check the shape anomaly of rope.As a result, it is possible to which obtain can be independent of magnetic characteristic
In the case of deviation, the cord damage diagnosis inspection of the shape anomaly of rope quantitatively and than prior art is more precisely detected
Look into device and cord damage deagnostic test method.
Brief description of the drawings
Fig. 1 is the structure chart of the cord damage deagnostic test device of embodiments of the present invention 1.
Fig. 2 is the figure for illustrating the principle of the burn out detection of the 1st embodiment of the present invention.
Fig. 3 is the figure of the 1st magnetic characteristic of the rope of embodiments of the present invention 1.
Fig. 4 is the figure of the 2nd magnetic characteristic of the rope of embodiments of the present invention 1.
Fig. 5 be for illustrate in embodiments of the present invention 1 rope be in without it is in the state of magnetic field, be vortexed to rope
The figure of the relation between entrance and magnetic field intensity in 1.
Fig. 6 is for illustrating that rope is in the state of high-intensity magnetic field in embodiments of the present invention 1, being vortexed to rope
The figure of the relation between entrance and magnetic field intensity in 1.
Fig. 7 is the structure chart of the cord damage deagnostic test device of embodiments of the present invention 2.
Fig. 8 is the figure for illustrating the burn out detection principle of embodiments of the present invention 2.
Fig. 9 is a series of flow chart of the processing for the damage testing and sectional area measurement for showing embodiments of the present invention 2.
Figure 10 is the structure chart of the cord damage deagnostic test device of embodiments of the present invention 3.
Figure 11 is the stereogram of the axial coil of embodiments of the present invention 3.
Embodiment
Below, using accompanying drawing to the excellent of cord damage deagnostic test device and cord damage deagnostic test method of the invention
Embodiment is selected to illustrate.
Embodiment 1.
Fig. 1 is the structure chart of the cord damage deagnostic test device of embodiments of the present invention 1.The rope of present embodiment 1
Rope damage deagnostic test device is configured to have the 1st yoke 10, the 2nd yoke 20, axial coil 30, array of magnetic sensors 40, friendship
Flow current source 50 and voltage determination device 60.
1st yoke 10 is to be used for the magnetic for applying the 1st magnetic field to rope 1 by being installed on the rope 1 as check object
Yoke, it has magnet 11.In the case where permanent magnet 11a is used as into magnet 11, rope 1 is applied directly by means of the 1st yoke 10
Magnetic field is flowed as the 1st magnetic field, thus enables that the magnetic saturation of rope 1.
In addition, in the case where permanent magnet 11b is used as into magnet 11, pulsed magnetic is applied to rope 1 by means of the 1st yoke 10
Field is used as the 1st magnetic field, thus can also make the magnetic saturation of rope 1.Below, illustrated in case of applying D.C. magnetic field.
2nd yoke 20 is the yoke for applying alternating magnetic field to rope 1.Specifically, by from ac current source 50
There is provided AC constant current to the axial coil 30 that is wound in the 2nd yoke 20, thus, it is possible to by means of the 2nd yoke 20 to rope
1 applies alternating magnetic field.As a result, producing vortex in rope 1, and also produce eddy current magnetism caused by vortex.
Array of magnetic sensors 40 is leakage magnetic flux tester as follows：Applying alternating magnetic field by means of the 2nd yoke 20
When, the leakage magnetic flux of the eddy current magnetism in the damaged portion from rope 1 is measured, thus detects breakage.Here, using Magnetic Sensor battle array
The direction in the magnetic field that row 40 are detected is not only radially, to can also be axially or circumferential.On the detailed of damage testing principle
Situation, describe after appearance.
Furthermore it is possible to substitute array of magnetic sensors 40 and use Hall element, magnetoresistive element (AMR, GMR, TMR) or coil
Leakage magnetic flux tester as work.Can be single coil in addition, when coil is used as into leakage magnetic flux tester.
When applying alternating magnetic field by means of the 2nd yoke 20, voltage determination device 60 is determined due to eddy current magnetism and changed
The voltage V of axial coil 30, and measure the sectional area S of the rope 1 proportional to voltage V.On the detailed of sectional area measurement principle
Details condition, describe after appearance.
In addition, though not shown in Fig. 1, still, the cord damage deagnostic test device of present embodiment 1 has controller
70.Controller 70 controls the output from ac current source 50, and according to array of magnetic sensors 40 and the meter of voltage determination device 60
Result is surveyed, performs damage testing processing and sectional area measurement processing.
Next, using accompanying drawing to the damage testing that is performed by the cord damage deagnostic test device of present embodiment 1
Principle and the principle of sectional area measurement are described in detail.
Principle ＞s of the ＜ on damage testing
Fig. 2 is the figure for illustrating the principle of the burn out detection of the 1st embodiment of the present invention, is to show specifically
The explanation figure of the state of the change of eddy current magnetism is detected using array of magnetic sensors 40.
By applying alternating magnetic field to rope 1 by means of the 2nd yoke 20, thus due to electromagnetic induction in the week of rope 1
It is vortexed to flowing through.Also, when in damaged part of Fig. 2 central portion in the presence of rope 1 as being shown as " A portions ", vortex
Stream can change.Its result causes " eddy current magnetism " equivalent to the caused magnetic field due to vortex to change.
Therefore, the controller 70 of embodiments of the present invention 1 measures the eddy current magnetism using array of magnetic sensors 40
Change, when the size of variable quantity is beyond feasible value, is capable of detecting when the damaged situation there occurs rope 1 at the position.
The principle ＞ that ＜ measures on sectional area
The exchange flux in rope 1 formed by axial coil 30 is proportional to the magnetic permeability mu of rope sectional area and rope.
Here, rope 1 is mainly fabricated from iron, because temperature, material and rolling when manufacturing etc. causes its magnetic characteristic to change.This
Outside, being applied to the tension force of rope can also cause magnetic characteristic to change.
Fig. 3 is the figure of the 1st magnetic characteristic of the rope 1 for showing embodiments of the present invention 1.Specifically, shown in the Fig. 3
1st magnetic characteristic is to show that application magnetic field H, the longitudinal axis show the magnetic characteristic of the BH curve in the magnetic field in rope 1 based on transverse axis.
In addition, Fig. 4 is the figure of the 2nd magnetic characteristic of the rope 1 for showing embodiments of the present invention 1.Specifically, the Fig. 4
The 2nd shown magnetic characteristic is to show that application magnetic field H, the longitudinal axis show the magnetic characteristic of the μ-H curves of magnetic permeability mu based on transverse axis.In addition,
Gradient of the magnetic permeability mu equivalent to the BH curve shown in Fig. 3.
As the problem of prior art, as described above, the magnetic permeability mu of the application magnetic field H1 shown in Fig. 4 is by every rope 1
The influence of magnetic characteristic and have larger deviation.In order to solve such problem, in present embodiment 1, by applying DC magnetic
Field makes the interior flux saturation of rope 1, forms the state of the application magnetic field H2 shown in Fig. 4.As a result, enabling controller 70
Deviation in magnetic permeability mu is less and inhibits for every rope 1 and carries out section in the state of the influence of different magnetic characteristics
Long-pending measurement.
Therefore, in present embodiment 1, first, D.C. magnetic field is applied to rope 1 by means of the 1st yoke 10 and makes rope 1
Interior flux B turn into saturation state.Thereby, it is possible to the magnetic characteristic with rope 1, size independently so that the differential with magnetic flux B
Be worth suitable magnetic permeability mu turns into constant as shown in Fig. 4 above.
Next, controller 70 can obtain sectional area S according to the following calculating formula (1) related to axial coil 30.
Here, n is the coil turn of per unit length, HrfIt is alternating magnetic field.
In present embodiment 1, by the work of controller 70, control and be, from ac current source 50 to being wound in the 2nd magnetic
The axial coil 30 of yoke 20 provides AC constant current.As a result, n × μ H in above formula (1) can be maderfAs known fixation
Value.Therefore, controller 70 determines the voltage V of axial coil 30 using voltage determination device 60, thus, it is possible to measure and sectional area S
Proportional value.
In addition, next, the interior flux B of rope 1 is set not only to be made it possible to as saturation state to applying D.C. magnetic field
Sectional area S measurement is enough carried out, but also during the damage testing of the rope 1 to carrying out the measurement result based on eddy current magnetism change
The helpful situation of raising of accuracy of detection illustrate.
Eddy current magnetism be due to the excitation field as caused by axial coil 30 electromagnetic induction effect and it is caused, therefore,
Eddy current magnetism produces on the direction for offsetting the excitation field.Therefore, the excitation field inside rope 1 is reached due to eddy current magnetism
And become inside rope smaller.Its result causes vortex to become smaller closer to the inside of rope 1.
Also, represent that the size of vortex is reduced to 1/e depth (skin depth) from the value of rope surface with following formula (2)
δ。
The √ (π × μ × σ × f) (2) of δ=1/
Wherein, each coefficient in above formula (2) is as follows.
π：Pi
μ：Permeability
σ：Conductance
f：The frequency of excitation field
Therefore, will also realize that according to above formula (2)：Magnetic permeability mu is smaller, then vortex more can deeper enter the inside of rope 1.Figure
5 be for illustrating that rope 1 is in without entrance in the state of magnetic field, being vortexed into rope 1 in embodiments of the present invention 1
The figure of relation between magnetic field intensity.On the other hand, Fig. 6 is to be used to illustrate that rope 1 to be in embodiments of the present invention 1
The figure of relation between entrance in the state of high-intensity magnetic field, being vortexed into rope 1 and magnetic field intensity.
As shown in figure 5, in without magnetic field, magnetic permeability mu is larger, and therefore, the skin depth δ obtained using above formula (2) is shallower.
As a result, alternating magnetic field be present, vortex cannot be introduced into the inside of rope 1 and eddy generation the shape that can not reach defective locations
The possibility of state.
On the other hand, as shown in fig. 6, in high-intensity magnetic field, magnetic permeability mu is smaller, therefore, the epidermis obtained using above formula (2)
Depth δ becomes deeper compared to the situation of Fig. 5 above.The result is that alternating magnetic field, vortex is enabled to enter to rope 1
Inside, turn into the state that vortex reaches defective locations.Therefore, turn into the interior flux B of rope 1 by applying D.C. magnetic field
Saturation state, it is possible to increase the damage testing precision of the rope 1 of the measurement result of the leakage magnetic flux based on eddy current magnetism.
The technical characteristic of the present application is summarized from the description above, is following 2 points.
(feature 1) by rope 1 apply D.C. magnetic field, the magnetic characteristic deviation of rope 1 can be suppressed, can be accurately
Carry out the measurement of sectional area.
(feature 2) can reduce the magnetic permeability mu of rope 1, its result causes alternation by applying D.C. magnetic field to rope 1
Magnetic field is easily accessible inside rope, it is possible to increase the damage testing precision of rope 1.
As described above, according to embodiment 1, when detecting the shape anomaly of rope, D.C. magnetic field is applied to rope and made
The interior flux of rope turns into saturation state.Then, alternating magnetic field is applied to the rope of the saturation state, thus performs rope
Damage testing and sectional area measurement.As a result, can be to having the rope of different magnetic characteristics to inhibit because magnetic is special respectively
Property the influence that brings of difference on the basis of, realize that damage testing and the precision of sectional area measurement improve.
Embodiment 2.
In present embodiment 2, to by using the structure different from embodiment 1 above come realize features described above 1,
The cord damage deagnostic test device of feature 2 illustrates.
Fig. 7 is the structure chart of the cord damage deagnostic test device of embodiments of the present invention 2.The rope of present embodiment 2
Rope damage deagnostic test device is configured to have the 1st yoke 10, the 2nd yoke 20, axial coil 30, circumferential coil 41, alternating current
Stream source 50,51 and voltage determination device 60,61.In addition, diagram also is eliminated to controller 70 in the figure 7.
As with difference of the embodiment 1 in structure above, the cord damage deagnostic test device of present embodiment 2
Array of magnetic sensors 40 is substituted with circumferential coil 41, and newly there is ac current source 51 and voltage determination device 61.Also,
In present embodiment 2, measured on sectional area, it is same with embodiment above, still, on damage testing, using with
The circumferential coil 41 that is placed near rope 1 is carried out, and below, is described in detail using accompanying drawing.
In embodiment 1 above, controller 70 applies to rope 1 by ac current source 50, axial coil 30 and the 2nd
Alternating magnetic field caused by yoke 20, and leakage magnetic flux is measured using array of magnetic sensors 40, carry out damage testing in this way.
On the other hand, in present embodiment 2, controller 70 applies by ac current source 51 and circumferential coil to rope 1
Alternating magnetic field caused by 41, and leakage magnetic flux is measured using circumferential coil 41, carry out damage testing in this way.
Principle ＞s of the ＜ on the damage testing in embodiment 2
Fig. 8 is the figure for illustrating the principle of the burn out detection in embodiments of the present invention 2, is to show specifically
The explanation figure for the state for produce alternating magnetic field 2 and detect eddy current magnetism change using circumferential coil 41.
In present embodiment 2, when carrying out damage testing, controller 70 utilizes ac current source 51 and circumferential coil 41
So that produce alternating magnetic field 2 and be applied to rope 1, it is same with embodiment 1 above when carrying out sectional area measurement,
Controller 70 to produce alternating magnetic field 1 and is applied to rope using ac current source 50, the yoke 20 of axial coil 30 and the 2nd
Rope 1.
Therefore, in present embodiment 2, circumferential coil 41 is being utilized to apply alternation magnetic in order to carry out damage testing action
It is to make axial coil 30 without action by the control of controller 70, without flow through electricity in axial coil 30 during field 2
Stream.On the contrary, during utilizing axial coil 30 to apply alternating magnetic field 1 to carry out sectional area measurement, pass through controller
70 controls are to make circumferential coil without action, without flow through electric current in circumferential coil 41.
In present embodiment 2, when carrying out burn out detection, as shown in figure 8, controller 70 is by circumferentially applying alternation
Magnetic field 2 and vortex is flowed through in the axial direction.Then, controller 70 reads the electricity of circumferential coil 41 by using voltage determination device 61
V2 is pressed to detect the change of the eddy current magnetism at damaged part (A portions) place.
Fig. 9 is a series of flow chart of the processing for the damage testing and sectional area measurement for showing embodiments of the present invention 2.
The controller 70 possessed by cord damage deagnostic test device performs a series of processing in the Fig. 9.In addition, in Fig. 9, with
The order of damage testing → sectional area measurement is carried out, and still, order conversely also has no problem.In addition, Fig. 9 action is to pass through
The application of D.C. magnetic field or pulsed magnetic field and cause rope 1 interior flux turn into saturation state premised on.
First, in step S901, controller 70 to circumferential coil 41 from ac current source 51 by providing exchange
Constant current, and alternating magnetic field 2 is applied to rope 1.
Next, in step S902, controller 70 is by detecting the electricity of circumferential coil 41 by means of voltage determination device 61
Press V2 and perform damage testing.Specifically, when voltage V2 exceedes the voltage class that to allow variable quantity suitable with eddy current magnetism
When, controller 70 is judged as generating breakage.
Next, in step S903, controller 70 stops providing exchange perseverance from ac current source 51 to circumferential coil 41
Determine electric current, terminate the sectional area measurement processing that damage testing is handled and gone to after step S911.
Then, in step S911, controller 70 is by providing AC constant from ac current source 50 to axial coil 30
Electric current and to rope 1 apply alternating magnetic field 1.
Next, in step S912, controller 70 detects the voltage of axial coil 30 by means of voltage determination device 60
V1, thus perform sectional area measurement.Specifically, controller 70 measures sectional area according to above-mentioned formula (1).
Next, in step S913, controller 70 stops providing exchange perseverance from ac current source 50 to axial coil 30
Determine electric current, terminate sectional area measurement processing, and the damaged processing returned to after step S901.
Because defect caused by the breakage of rope 1 is vortex that is caused in the circumferential, therefore tending to interfere with axial.It is tied
Fruit is handled according to the damage testing of the present embodiment 2 of the circumferential coil 41 of utilization, compared to utilization array of magnetic sensors 40
The embodiment 1 before damaged processing is carried out, the stream of damaged caused vortex shows with changing greatly, therefore voltage V2
Output becomes much larger.As a result, the further raising of damage testing precision can be realized.
As described above, according to embodiment 2, when detecting the shape anomaly of rope, D.C. magnetic field is applied to rope and made
The interior flux of rope turns into saturation state.Then, by applying alternating magnetic field to the rope of the saturation state, to perform rope
Damage testing and sectional area measurement.As a result, for respectively have different magnetic characteristics rope, can inhibit due to
Realize that damage testing and the precision of sectional area measurement improve on the basis of being influenceed caused by the difference of magnetic characteristic.In addition, carry out
Circumferential coil has been used during damage testing.As a result, compared to embodiment 1 above, breakage can be further improved
Accuracy of detection.
Embodiment 3.
To realizing features described above 1, feature 2 using from 1,2 different structure of embodiment above in present embodiment 3
Cord damage deagnostic test device illustrate.
Figure 10 is the structure chart of the cord damage deagnostic test device of embodiments of the present invention 3.The rope of present embodiment 3
Rope damage deagnostic test device is configured to have the 1st yoke 10, axial coil 31, array of magnetic sensors 40, ac current source 50
With voltage determination device 60.
As with difference of the embodiment 1 in structure above, the cord damage deagnostic test device of present embodiment 3
The axial coil 30 being wound in the 2nd yoke 20 is substituted with the axial coil 31 around rope 1 is configured.
The specific principle and method related to damage testing and sectional area measurement is identical with embodiment 1 above, because
And omit the description.
In present embodiment 3, it is configured to axial coil 31 configuring structure around rope 1, thus without the 2nd
Yoke 20.As a result, absorption of the yoke to D.C. magnetic field can be excluded, the deviation of magnetic permeability mu can be suppressed.
Figure 11 is the stereogram of the axial coil 31 of embodiments of the present invention 3.Figure 10 such as the Figure 11 and above
Shown in right side, by the structure for being formed as being divided into two by axial coil 31, tearing open relative to rope 1 can be easily carried out
Dress.
As described above, according to embodiment 3, there is following structure：By axial coil configuration around rope, it is not necessary to use
In the 2nd yoke for applying alternating magnetic field.As a result, absorption of the yoke to D.C. magnetic field can be excluded, magnetic permeability mu can be suppressed
Deviation influence, can realize damage testing and sectional area measurement further precision improve.
Claims (9)
1. a kind of cord damage deagnostic test device, it is checked the shape anomaly for suspending the rope of lift car in midair, wherein,
The cord damage deagnostic test device has：
1st yoke, it is installed on the rope, applies the magnetic for making the rope turn into magnetic saturation state to the rope
；
1st ac current source, it exports AC constant current；
Alternating magnetic field applicator, consist of with axial coil, the alternating magnetic field applicator is by from the 1st alternating current
Source provides constant current to the axial coil and applies alternating magnetic field to the axial direction of the rope so that is produced in the rope
Raw vortex and eddy current magnetism；
Leakage magnetic flux tester, it is measured to leakage magnetic flux of the rope during the application of the alternating magnetic field；
1st voltage determination device, it determines voltage of the axial coil during the application of the alternating magnetic field；And
Controller, it controls the alternating magnetic field applicator, thus to turning into the magnetic saturation state due to the 1st yoke
The rope apply the alternating magnetic field, examined according to the size of the leakage magnetic flux measured by the leakage magnetic flux tester
Survey the rope whether there is breakage, according to the voltage determined by the 1st voltage determination device, as with the voltage into than
The value of example and calculate the sectional area of the rope, and whether there is damaged and described sectional area according to described to check the rope
Shape anomaly.
2. cord damage deagnostic test device according to claim 1, wherein,
The alternating magnetic field applicator is configured to be wound with the 2nd yoke of the axial coil, according to the control of the controller
Constant current is provided from the 1st ac current source to the axial coil, thus by being installed on the described 2nd of the rope
Yoke applies the alternating magnetic field to the rope.
3. cord damage deagnostic test device according to claim 1, wherein,
The alternating magnetic field applicator is configured to be installed on the rope in a manner of the axial coil is wound in into the rope
Rope, constant current is provided from the 1st ac current source to the axial coil according to the control of the controller, thus to institute
State rope and apply the alternating magnetic field.
4. cord damage deagnostic test device according to claim 3, wherein,
The axial coil is made up of the coil being divided into two.
5. the cord damage deagnostic test device described in any one in Claims 1 to 4, wherein,
The leakage magnetic flux tester is made up of array of magnetic sensors, is configured as measuring the radially, axially and circumferential of the rope
In any direction on the leakage magnetic flux.
6. cord damage deagnostic test device according to claim 1, wherein,
The leakage magnetic flux tester is made up of circumferential coil,
The cord damage deagnostic test device also has：
2nd ac current source, it exports AC constant current to the circumferential coil；And
2nd voltage determination device, it determines the voltage of the circumferential coil,
The alternating magnetic field applicator is configured to include：
1st alternating magnetic field applicator, it has the 2nd yoke for being wound with the axial coil, when determining the sectional area, root
Constant current is provided from the 1st ac current source to the axial coil according to the control of the controller, thus by installation
The 1st alternating magnetic field is applied as the alternating magnetic field to the rope in the 2nd yoke of the rope；And
2nd alternating magnetic field applicator, it is handed over when whetheing there is breakage described in judgement, according to the control of the controller from the described 2nd
Flow current source and provide constant current to the circumferential coil, thus apply the 2nd alternating magnetic field to the rope as the alternation
Magnetic field,
When determining the sectional area, the controller controls the 1st alternating magnetic field applicator, thus to due to the described 1st
Yoke and apply the 1st alternating magnetic field as the rope of the magnetic saturation state, according to by the 1st voltage determination device
The voltage determined, the sectional area of the rope is calculated as the value proportional to the voltage,
When whetheing there is breakage described in judgement, the controller controls the 2nd alternating magnetic field applicator, thus to due to described the
1 yoke and apply the 2nd alternating magnetic field as the rope of the magnetic saturation state, according to by the 2nd voltage determination
The voltage that device determines detects that the rope whether there is breakage.
7. the cord damage deagnostic test device described in any one in claim 1~6, wherein,
1st yoke has permanent magnet, applies D.C. magnetic field to the rope.
8. the cord damage deagnostic test device described in any one in claim 1~6, wherein,
1st yoke has electromagnet, applies pulsed magnetic field to the rope.
9. a kind of cord damage deagnostic test method, it is the side checked the shape anomaly for suspending the rope of lift car in midair
Method, wherein, the cord damage deagnostic test method has：
1st step, in the 1st step, apply the magnetic field for making the rope turn into magnetic saturation state to the rope；
Second step, in the second step, to applying alternating magnetic field as the rope of the magnetic saturation state；
Third step, in the third step, measure leakage magnetic flux of the rope during the application of the alternating magnetic field；
4th step, in the 4th step, detect the rope whether there is breakage according to the size of the leakage magnetic flux measured；
5th step, in the 5th step, determine during the application of the alternating magnetic field due in the axial direction of the rope
Caused eddy current magnetism and the voltage to change；
6th step, in the 6th step, the value proportional as the voltage to determining and calculate the section of the rope
Product；And
7th step, in the 7th step, there is unabroken testing result and logical according to being obtained by the 4th step
The result of calculation of the sectional area that the 6th step obtains is crossed to judge the shape anomaly of the rope.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2015/057145 WO2016143088A1 (en) | 2015-03-11 | 2015-03-11 | Rope damage diagnostic examination device and rope damage diagnostic examination method |
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| CN107430090A true CN107430090A (en) | 2017-12-01 |
| CN107430090B CN107430090B (en) | 2020-06-23 |
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| CN201580077392.4A Active CN107430090B (en) | 2015-03-11 | 2015-03-11 | Rope damage diagnosis and inspection device and rope damage diagnosis and inspection method |
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| Country | Link |
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| JP (1) | JP6289732B2 (en) |
| KR (1) | KR102020974B1 (en) |
| CN (1) | CN107430090B (en) |
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| WO (1) | WO2016143088A1 (en) |
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| CN111684276A (en) * | 2018-03-08 | 2020-09-18 | 株式会社岛津制作所 | Magnetic substance inspection device |
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| CN113484408A (en) * | 2021-07-06 | 2021-10-08 | 兰州空间技术物理研究所 | Nondestructive testing device for steel wire rope |
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| KR102265940B1 (en) * | 2019-12-04 | 2021-06-17 | 한국표준과학연구원 | Cable defect inspection apparatus |
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Also Published As
| Publication number | Publication date |
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| CN107430090B (en) | 2020-06-23 |
| JPWO2016143088A1 (en) | 2017-06-08 |
| JP6289732B2 (en) | 2018-03-07 |
| KR20170120167A (en) | 2017-10-30 |
| KR102020974B1 (en) | 2019-09-11 |
| DE112015006279T5 (en) | 2018-01-11 |
| DE112015006279B4 (en) | 2024-03-28 |
| WO2016143088A1 (en) | 2016-09-15 |
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