CN2187778Y - Contactless wheel rim section tester - Google Patents
Contactless wheel rim section tester Download PDFInfo
- Publication number
- CN2187778Y CN2187778Y CN 94207423 CN94207423U CN2187778Y CN 2187778 Y CN2187778 Y CN 2187778Y CN 94207423 CN94207423 CN 94207423 CN 94207423 U CN94207423 U CN 94207423U CN 2187778 Y CN2187778 Y CN 2187778Y
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- China
- Prior art keywords
- steel ring
- sensor
- positioning disk
- transmission shaft
- cylinder
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- Expired - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000013519 translation Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005686 electrostatic field Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 235000011202 Angiopteris lygodiifolia Nutrition 0.000 description 1
- 241000723185 Cyathea Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000105 evaporative light scattering detection Methods 0.000 description 1
- 238000005290 field theory Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
A contactless wheel rim section tester of the utility model relates to a testing device for measuring the end face runout and the diameter runout of a steel ring of a vehicle wheel. The contactless wheel rim section tester uses a current vortex sensor as a detector, and keeps a certain distance from the measured steel ring which is fixed on a positioning disk. The contactless wheel rim section tester and a positioning detent clamp each other by means of a gas cylinder and a transmission shaft. The transmission shaft is driven by an electrical machine, and the measured steel ring is simultaneously driven to rotate. In the process of the rotation of the steel ring, the distance between the surface of the steel ring and a transducer head changes because of the ellipticity and the unevenness of the surface of the steel ring, and the oscillating frequency of an end coil of the current vortex sensor changes. And thus the run-out tolerance of the steel ring is measured according to the changes.
Description
The utility model relates to a kind of be used to the measure face runout of wheel steel ring and the proving installation of diameter run-out, belongs to wheel manufacturing technology field.
The height of wheel mass detection level, not only have influence on the product quality and the reputation of wheel manufacturer, but also be directly connected to the stable passenger of reaching of running car and the peace body of goods carried, and in several the key indexs of wheel detection, have two to be: the detection of diameter run-out and face runout about stagger.In the prior art, utilize the non-contact measurement of capacitance method realization to steel ring, its principle as shown in Figure 1.Utilize the electric capacity of plate condenser and the relation that two interelectrode distances are inversely proportional to, extrapolate interelectrode distance by the variation of measuring electric capacity, (distance between probe and wheel just) changes, be c=(8s)/(d), wherein c is an inter-electrode capacitance, just the electric capacity between probe and wheel, s is a dielectric permittivity, s is the area of battery lead plate, and d is interelectrode distance, just the distance between probe and wheel.
Mainly there is following problem in Yan Zhi detector in this way: one, factor such as rough, the burr of wheel surface, local defect all will have a strong impact on the distribution of the quantity of electric charge of wheel surface, and then influence tested capacitance.Two, according to the electrostatic field theory, the CHARGE DISTRIBUTION of equipotential system (tested wheel) is relevant with its surface curvature, and curvature is big more, and electric density is big more.Because wheel surface is a cylinder curved surface, therefore, the electric capacity that measures in this way itself is along with the variation of radius-of-curvature just has bigger error.Three, this method realizes by electrostatic field, in carshop, exists stronger alternating electromagnetic field in the site environment, disturbs very big to electrostatic field.Four, be subjected to the impurity on steel ring surface and airborne pollution effect bigger.
The purpose of this utility model is a kind of contactless wheel steel ring proving installation of design, uses the current vortex sensor according to the eddy effect design, measures the face runout and the tangential signal of beating of steel ring.
Content of the present utility model is: a kind of contactless wheel steel ring proving installation, form by sensor, detent mechanism and gear train.Detent mechanism comprises locating detent, positioning disk and sensor support plate, tested wheel steel ring places on the positioning disk, and the positioning disk upper fixed has locating detent, and sensor is fixed on the support plate, support plate places a side of tested wheel steel ring, and with the piston relative fixed of cylinder I.Gear train comprises motor, chain, transmission shaft and two cylinders.Transmission shaft and positioning disk relative fixed, motor rotates the tested steel ring on the positioning disk by chain and transmission shaft, and the cylinder II makes the tested steel ring on the positioning disk upper and lower mobile by piston and transmission shaft, and the cylinder I makes the sensor on the support plate make left and right translation.
Description of drawings:
Fig. 1 is prior art test philosophy figure.
Fig. 2 is the utility model structural representation.
Fig. 3 is the used current vortex sensor structural representation of the utility model.
Fig. 4 is eddy current principle figure.
Introduce the utility model content below in detail.Among Fig. 2, the 1st, signal lamp, the 2nd, sensor, the 3rd, sensor support plate, the 4th, cylinder I, the 5th, chain, the 6th, motor, the 7th, cylinder II, the 8th, locating detent, the 9th, positioning disk, the 10th, tested wheel steel ring, the 11st, transmission shaft.
The course of work of proving installation is: at first tested wheel steel ring 10 is fixed on the positioning disk 9, the cylinder II up promotes by the steel ring that cylinder piston and transmission shaft 11 will be fixed on the positioning disk 9, contacts with steel ring and steel ring is clamped up to locating detent 8.At this moment, the cylinder I pushes ahead sensor by piston and sensor support plate 3, keeps certain distance with the tested steel ring 10 of wheel.At last, connect the power supply of motor 6, motor 6 rotates transmission shaft 11 by chain 5, rotates thereby drive tested steel ring.In the steel ring rotation process, because the out-of-roundness of steel ring and the unevenness on steel ring surface, cause steel ring surface and sensing head distance to change, the oscillation frequency that causes the sensor end coil changes, this vibration is swung after the detection of frequency signal process, filtering, the amplification, the voltage signal that obtains changing, and this signal is after treatment, obtain the variation of steel ring surface and sensing head distance, i.e. the run-out tolerance of steel ring.
The used sensor of the utility model is a current vortex sensor, and its structure as shown in Figure 3.Among the figure, the 12nd, end coil, the 13rd, skeleton, the 14th, mounting rod, the 15th, insulating cylinder, the 16th, cable.Coil 12 places skeleton that the end is arranged, and insulating cylinder 15 places the inner chamber of mounting rod 14, and cable 16 puts in the insulating cylinder 15.
The principle of current vortex as shown in Figure 4.Current vortex sensor is based on a kind of sensor of eddy effect design.If a sheet metal is placed near the coil, pass to simultaneously the high frequency exchange current in coil, the high frequency magnetic field that this electric current produces, to apply Lorentz force to free electron in the sheet metal, electronics is directed moving under Lorentz force action, produce induced current, this electric current is called current vortex in the form of a ring.According to spinulose tree fern time law, current vortex will produce an alternating magnetic field opposite with former magnetic direction, and the interaction in these two magnetic fields has changed the equiva lent impedance of primary winding.Its equiva lent impedance is as follows:
Z＝R
1＋R
2(ω
2M
2)/(R
2 2+ω
2L
2) ＋jω［L
1－L
2(ω
2M
2)/(R
2 2+ω
2L
2) ］
Wherein:
R
1, L
1----coil resistance, inductance.
R
2, L
2----sheet metal equivalent resistance, equivalent inductance.
ω----alternation angular frequency.
The M----coefficient of mutual inductance.
For certain sensor and tested metal covering, its R
1, R
2, L
1, L
2, ω is constant, and Z just becomes the function of M like this.What coefficient of mutual inductance was represented is the size that is coupled between the two.
The spacing of coil and measured piece is d as shown in Figure 4
Then have:
M＝f（d）
Can get Z=g(d by following formula) because the equiva lent impedance of coil is relevant with the oscillation frequency of the loop of being made up of this coil, thereby from the variable quantity of the oscillation frequency that picks coil, can record between sheet metal and the coil apart from d.
Claims (2)
1, a kind of contactless wheel steel ring proving installation is characterized in that this device is made up of sensor, detent mechanism and gear train; Described detent mechanism comprises locating detent, positioning disk and sensor support plate, and tested wheel steel ring places on the positioning disk, and the positioning disk upper fixed has locating detent; Described sensor is fixed on the support plate, and support plate places a side of tested wheel steel ring, and with the piston relative fixed of cylinder I; Described gear train comprises motor, chain, transmission shaft and two cylinders, transmission shaft and positioning disk relative fixed, motor rotates the tested steel ring on the positioning disk by chain and transmission shaft, the cylinder II makes the tested steel ring on the positioning disk upper and lower mobile by piston and transmission shaft, and the cylinder I makes the sensor on the support plate make left and right translation.
2, proving installation as claimed in claim 1 is characterized in that wherein said sensor is a current vortex sensor, is made up of coil, skeleton, mounting rod, insulation letter and cable; Described coil places the end of skeleton, and insulating cylinder places the mounting rod inner chamber, and cable puts in the insulating cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94207423 CN2187778Y (en) | 1994-03-18 | 1994-03-18 | Contactless wheel rim section tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94207423 CN2187778Y (en) | 1994-03-18 | 1994-03-18 | Contactless wheel rim section tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2187778Y true CN2187778Y (en) | 1995-01-18 |
Family
ID=33825757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94207423 Expired - Fee Related CN2187778Y (en) | 1994-03-18 | 1994-03-18 | Contactless wheel rim section tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2187778Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358825B (en) * | 2007-08-01 | 2010-09-29 | 鸿富锦精密工业（深圳）有限公司 | End pulsation measurement instrument |
| CN101701811B (en) * | 2009-11-02 | 2011-04-27 | 浙江金固股份有限公司 | Wheel diameter jumpiness and run-out tolerance detection method |
| CN102539072A (en) * | 2012-01-18 | 2012-07-04 | 山东电力研究院 | Field dynamic balance measuring device and method for utility boiler side fan |
| CN101398285B (en) * | 2008-10-20 | 2012-09-05 | 徐国林 | Detection process for run-out amount of steel ring rim |
| CN102105773B (en) * | 2008-07-22 | 2012-09-26 | 株式会社捷太格特 | Jig and method for measuring runout of flange surfaces of hub unit |
| CN104913750A (en) * | 2015-06-11 | 2015-09-16 | 湖北汽车工业学院 | Air-cushion-type measuring head mechanism of automobile wheel detection machine |
| CN105222694A (en) * | 2015-11-04 | 2016-01-06 | 上海电气电站设备有限公司 | The device and method that the rotating shaft of a kind of non-contact measurement large deflection is beated |
-
1994
- 1994-03-18 CN CN 94207423 patent/CN2187778Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358825B (en) * | 2007-08-01 | 2010-09-29 | 鸿富锦精密工业（深圳）有限公司 | End pulsation measurement instrument |
| CN102105773B (en) * | 2008-07-22 | 2012-09-26 | 株式会社捷太格特 | Jig and method for measuring runout of flange surfaces of hub unit |
| CN101398285B (en) * | 2008-10-20 | 2012-09-05 | 徐国林 | Detection process for run-out amount of steel ring rim |
| CN101701811B (en) * | 2009-11-02 | 2011-04-27 | 浙江金固股份有限公司 | Wheel diameter jumpiness and run-out tolerance detection method |
| CN102539072A (en) * | 2012-01-18 | 2012-07-04 | 山东电力研究院 | Field dynamic balance measuring device and method for utility boiler side fan |
| CN102539072B (en) * | 2012-01-18 | 2014-12-10 | 山东电力研究院 | Field dynamic balance measuring device and method for utility boiler side fan |
| CN104913750A (en) * | 2015-06-11 | 2015-09-16 | 湖北汽车工业学院 | Air-cushion-type measuring head mechanism of automobile wheel detection machine |
| CN104913750B (en) * | 2015-06-11 | 2018-04-24 | 湖北汽车工业学院 | A kind of automotive wheel detection machine air-cushion type head mechanism |
| CN105222694A (en) * | 2015-11-04 | 2016-01-06 | 上海电气电站设备有限公司 | The device and method that the rotating shaft of a kind of non-contact measurement large deflection is beated |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |