CN106404233A - Coercive force-based crane wheel pressure testing method - Google Patents
Coercive force-based crane wheel pressure testing method Download PDFInfo
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- CN106404233A CN106404233A CN201610798673.5A CN201610798673A CN106404233A CN 106404233 A CN106404233 A CN 106404233A CN 201610798673 A CN201610798673 A CN 201610798673A CN 106404233 A CN106404233 A CN 106404233A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/12—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress
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- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention discloses a coercive force-based crane wheel pressure testing method. An excitation coil and a detection coil are wound on an U-shaped probe; the U-shaped probe is arranged on a side surface of a track; the excitation coil is excited through using an alternating current excitation mode; the track generates a hysteresis loop under the effect of an excitation electric field; the detection coil detects the hysteresis loop through using a sinusoidal signal mode, so that a complete hysteresis loop can be obtained; and detected magnetic field signals are converted into electric signals through a digital-analog converter; and a corresponding relation between pressure and the measured electric signals is calibrated through testing, so that judgment can be realized. The testing method of the invention is based on a coercive force; the excitation coil and the detection coil are used in combination; the magnetic field is generated through using the alternating current excitation mode; the electric signals are generated through using the change of the magnetic field; measurement and calibration are performed according to the electric signals; and therefore, wheel pressure can be measured accurately. The method has the advantages of high test efficiency and accurate measurement.
Description
Technical field
The present invention relates to stress test field, specifically one kind are based on coercitive crane wheel load method of testing.
Background technology
Crane wheel load is the important parameter of crane, is also industrial premises and the major design of cart track foundation
Load and foundation.Cart wheel load is according to profits such as the lifting capacity of crane, deadweight, span, moving cart positions by designer
Calculated with equilibrium condition.Calculate it is believed that the wheel load of each wheel is to be uniformly distributed on same track to simplify, and
Only it is given at the averagely maximum wheel load under the most unfavorable processing condition.Most cranes adopt the structure of four fulcrum types, this arrangement at present
There is good symmetry and manufacturability, and stability is high, but theoretically, 3 points determine a plane, and four-point supporting is real
For a statically indeterminate system, the wheel load distribution of this structure is hyperstatic, and the actual pressure (wheel load) bearing of each fulcrum is difficult to standard
Really calculate.Moreover the distribution of wheel load is also relevant with structure and the basic flatness of rigidity, the accuracy of manufacture of structure and track etc.,
So difficult to realize accurately calculate.
Need the continuous development with economic construction with logistic industry, the owning amount of crane increases sharply, tonnage demand
Also it is continuously increased, crane develops towards maximization, efficient and heavy-duty direction.In order to accurately control crane wheel
Wheel load, it is more and more that the quantity of wheel is also installed, and the accurate calculating of therefore wheel load is more difficult.And current crane wheel
The mensure of pressure unification and accurate measuring method, the present invention provides a kind of accurate, efficient measuring method.
Content of the invention
It is an object of the invention to provide a kind of be based on coercitive crane wheel load method of testing, to solve above-mentioned background
The problem proposing in technology.
For achieving the above object, the present invention provides following technical scheme：
One kind is based on coercitive crane wheel load method of testing, and step is as follows：
(1) it is wound around excitation coil and detection coil on U-shaped probe, by U-shaped probe placement in track side surfaces, by exchange
Excitation mode excitation coil, and produce magnetic field, track, in the presence of excitation field, produces hysteresis curve, and detection coil adopts
Sinusoidal signal mode detects hysteresis curve, to obtain the hysteresis curve completing；
(2) field signal detecting is converted to the signal of telecommunication by digital to analog converter by detecting system；
(3) pass through the corresponding relation between Experimental Calibration pressure and the surveyed signal of telecommunication, its correspondence is described using linearity curve
Relation；
(4) curve between the power-signal of whole test system is carried out with Experimental Calibration, demarcates as follows：According to given
Force value, measures it and produces the size of field signal, measure multi-group data, judge its linear relationship.
As the further scheme of the present invention：In described step (1), excitation coil is produced by way of applying alternating current
Operating fields.
As the further scheme of the present invention：In described step (4), given force value is by Material Testing Machine or to add
Power apparatus are determined.
Compared with prior art, the invention has the beneficial effects as follows：
The method of testing of the present invention is carried out based on coercivity, and combines excitation coil and detection coil, using exchange
Excitation mode produces magnetic field, and produces the signal of telecommunication using the change in magnetic field, being measured according to the signal of telecommunication and demarcate, thus accurate
Really measure wheel load, the therefore present invention has testing efficiency height, measures accurate advantage.
Brief description
Fig. 1 is test signal and the linear relationship chart demarcating force value in the inventive method.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Embodiment
As follows based on coercitive crane wheel load testing procedure：
(1) excitation system adopts AC excitation mode, selects sinusoidal signal as driving source, to obtain the magnetic completing simultaneously
Hysteresis curves；
U-shaped probe is wound around excitation coil and detection coil, by probe placement in track side surfaces, by AC excitation side
Formula excitation coil, and produce magnetic field, track, in the presence of excitation field, produces hysteresis curve, and detection coil is using sinusoidal letter
Number mode detects hysteresis curve；
AC excitation mode produces operating fields by way of excitation coil being taken and applies alternating current, specifically side
Formula：Connect coil, switch on power, apply alternating current, excitation coil produces magnetic field；It is because that AC excitation is steady from exchange way
Fixed, fault is less, is so more conducive to the stable output of detection signal；
Using sinusoidal signal because being simplest signal wave, most widely used, in order to obtain complete hysteresis curve, because
This adopts sinusoidal signal；
Excitation coil is by it being applied with alternating current power supply, producing magnetic field, magnetized ferromagnetic material (being track), belong to herein
In generation magnetic field magnetized track；Detection coil is the change of the hysteresis curve after checking ferrimagnet magnetization, to react suffered
The change of stress, belongs to the change of measurement hysteresis curve；
(2) field signal detecting is converted to the signal of telecommunication by digital to analog converter by detecting system；
(3) pass through the corresponding relation between Experimental Calibration pressure and the surveyed signal of telecommunication, its correspondence is described using linearity curve
Relation；
(4) Experimental Calibration is carried out to the curve between whole test system " power-signal ",
Demarcating steps：According to given force value, measure it and produce the size of field signal, measure multi-group data, judge it
Linear relationship, to be demarcated with this；Given force value is to be applied by Material Testing Machine or other augmentors, and material examination
Machine of testing is for determining the occurrence of force value.
Specific formula and curve chart need to be determined according to specific demarcation, under examination such as：
Two-dimentional X-Y curve chart (X- signal value is determined according to test signal and demarcation force value；Y- demarcates force value), according to given
Force value Y measures its signal magnitude X, and corresponds, using least square fitting curve, determine curve equation Y=m+nX (m,
N is constant), as shown in Figure 1.
Annotation process is selected according to stress, and should meet the various situation of high low stress, is typically chosen representativeness
0.1t, 0.5t, 1t, 2t, 5t, 10t, 20t situation checking.
Test coercitive size, G0.1, G0.5, G1, G2, G5, G10 under each seif-citing rate.
Two-dimensional curve, abscissa unit t are drawn according to above-mentioned data, takes 0.1,0.5,1,2,5,10 sizes respectively.
Vertical coordinate unit G, carries out taking a little according to test coercivity size.Corresponding drafting respectively, finally according to curve
Linear relationship least square fitting curve.
As shown in Figure 1, there is certain linearity curve relation with demarcating force value in test signal, therefore passes through test signal
Can prepare to measure the wheel load situation of crane.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as limiting involved claim.
Claims (3)
1. one kind is based on coercitive crane wheel load method of testing it is characterised in that step is as follows：
（1）U-shaped probe is wound around excitation coil and detection coil, by U-shaped probe placement in track side surfaces, by AC excitation
Mode excitation coil, and produce magnetic field, track, in the presence of excitation field, produces hysteresis curve, and detection coil is using sinusoidal
Aspect detects hysteresis curve, to obtain the hysteresis curve completing；
（2）The field signal detecting is converted to the signal of telecommunication by digital to analog converter by detecting system；
（3）By the corresponding relation between Experimental Calibration pressure and the surveyed signal of telecommunication, its corresponding relation is described using linearity curve；
（4）Curve between the power-signal of whole test system is carried out with Experimental Calibration, demarcates as follows：According to given force value,
Measure it and produce the size of field signal, measure multi-group data, judge its linear relationship.
2. according to claim 1 based on coercitive crane wheel load method of testing it is characterised in that described step
（1）In, excitation coil produces operating fields by way of applying alternating current.
3. according to claim 1 based on coercitive crane wheel load method of testing it is characterised in that described step
（4）In, given force value is determined by Material Testing Machine or augmentor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610798673.5A CN106404233A (en) | 2016-08-31 | 2016-08-31 | Coercive force-based crane wheel pressure testing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610798673.5A CN106404233A (en) | 2016-08-31 | 2016-08-31 | Coercive force-based crane wheel pressure testing method |
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| CN106404233A true CN106404233A (en) | 2017-02-15 |
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| CN201610798673.5A Pending CN106404233A (en) | 2016-08-31 | 2016-08-31 | Coercive force-based crane wheel pressure testing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829743A (en) * | 2017-04-05 | 2017-06-13 | 江苏省特种设备安全监督检验研究院 | It is anti-to cross formula crane wheel compression testing device |
| CN111693185A (en) * | 2020-07-27 | 2020-09-22 | 广州特种机电设备检测研究院 | Crane wheel pressure testing device and method based on coercive force |
| CN112284585A (en) * | 2020-10-16 | 2021-01-29 | 广州特种机电设备检测研究院 | Device based on optical fiber testing wheel pressure |
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| JP2003130738A (en) * | 2001-10-24 | 2003-05-08 | Mitsubishi Heavy Ind Ltd | Stress-measuring apparatus |
| JP2006003082A (en) * | 2004-06-15 | 2006-01-05 | Honda Motor Co Ltd | Load sensor |
| CN2874449Y (en) * | 2005-12-04 | 2007-02-28 | 中国矿业大学 | Magnetic spring stress sensor for detecting load |
| CN101695717A (en) * | 2009-10-27 | 2010-04-21 | 淮海工学院 | Side transducer for detecting rolling pressure of rolling mill |
| CN103868983A (en) * | 2014-02-27 | 2014-06-18 | 南京航空航天大学 | Improved Barkhausen noise signal detection device |
| US20140184210A1 (en) * | 2012-12-28 | 2014-07-03 | General Electric Company | Non-contact magnetostrictive sensing systems and methods |
| DE102014213761A1 (en) * | 2014-07-15 | 2016-01-21 | Siemens Aktiengesellschaft | Device for detecting a road user on a traffic route, path with such a device, rail track with such a device and method for measuring force effects on a traffic route |
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2016
- 2016-08-31 CN CN201610798673.5A patent/CN106404233A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003130738A (en) * | 2001-10-24 | 2003-05-08 | Mitsubishi Heavy Ind Ltd | Stress-measuring apparatus |
| JP2006003082A (en) * | 2004-06-15 | 2006-01-05 | Honda Motor Co Ltd | Load sensor |
| CN2874449Y (en) * | 2005-12-04 | 2007-02-28 | 中国矿业大学 | Magnetic spring stress sensor for detecting load |
| CN101695717A (en) * | 2009-10-27 | 2010-04-21 | 淮海工学院 | Side transducer for detecting rolling pressure of rolling mill |
| US20140184210A1 (en) * | 2012-12-28 | 2014-07-03 | General Electric Company | Non-contact magnetostrictive sensing systems and methods |
| CN103868983A (en) * | 2014-02-27 | 2014-06-18 | 南京航空航天大学 | Improved Barkhausen noise signal detection device |
| DE102014213761A1 (en) * | 2014-07-15 | 2016-01-21 | Siemens Aktiengesellschaft | Device for detecting a road user on a traffic route, path with such a device, rail track with such a device and method for measuring force effects on a traffic route |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829743A (en) * | 2017-04-05 | 2017-06-13 | 江苏省特种设备安全监督检验研究院 | It is anti-to cross formula crane wheel compression testing device |
| CN111693185A (en) * | 2020-07-27 | 2020-09-22 | 广州特种机电设备检测研究院 | Crane wheel pressure testing device and method based on coercive force |
| CN112284585A (en) * | 2020-10-16 | 2021-01-29 | 广州特种机电设备检测研究院 | Device based on optical fiber testing wheel pressure |
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Application publication date: 20170215 |