General specifications

MeasuredobjectWheel diameter
Measurement condition

Measureme
nt contents

Measurement method
Measuring items
and accuracy

・Diameter of unused wheel tread

・Continuous wheel measurement

・・・・

Sensor setting position
Ambient light
Wheel speed
Direction of rail width of wheel
Displacement and meandering
Wheel status
Moving direction of wheel

Approx, 10% wear for 860 ㎜Φ
8 wheels
On a pit in train depot
Away from direct sunlight at measurement point

0 to 15 ㎞/h
Direction of rail width: Within ±20mm
Meandering: Within ±2°
・Has no grease and dust at a basis groove.
・Entering and existing: Both,
Only when moving no inverse direction duringmoving, and no stopping during measurement
・Measurement processing time From image import to wear calculation;
Within 20 seconds/ wheel
・ Light-slice method, 3 dimension processing
Items

Accuracy

Back gauge(G)±0.5mmThickness(T)±0.5mmHeight(H)Distance

For verification of measurement accuracy,
ACT basic wheel parts is used by the method
shown right.

SoftwarePerformance

Dimensions
WeightOS, programming language,
display structureTemp.
(sensor unit)
Humid.
(sensor unit)Vibe. proof(sensor unit)
Struc.
(sensor unit)
Sensor unit
(for one-sided wheel)
測定ラック

3 dimension processing
Wheel Profile Measurement System

寸法算定
B・G×F
C×10㎜

A65㎜

H×±0.5mm±0.5mmLight-slice method,TG

Tyre thickness(T)=(C-H)+(A-G)/2
Outside distance=F+B･G/2
A: Diameter of groove(780mm)
G: Basis diameter of tyrethickness(730 ㎜)

Windows XP,
C#
Main menu, measurement plan, measurement start, result display, and end
0 to 40℃
10 to 90%, without condensation
Less than 5G
Splash-proof construction for heavy-duty uses
740(W)x654(D)x245(H)mm, excluding projections Approx, 10kg
600(W)x800(D)x1600(H)mm, excluding projections

Approx, 50kg

◇ Non-Contact measurement the outline of wheels◇ Capable of measuring in moving condition of train◇ The data of wheel profile is also converted into data

Make Non-Contact measurement of flange/gauge automatic
The Wheel Profile Measurement System uses 3 dimension processing system by Light-slice method.
This system is available for a measurement of the outline of entering and exiting wheels with laser
beam; by setting a sensor on a pit in a train inspection area and a rack for measurement beside a pit.
The output measurement result is the following; the data of the top of wheel profile, thickness of a tyre,height of a flange, distance of outer surface, and measured value of back gauge.
A measurement operates in low-speed running condition of train and the measured value and topof wheel profile are also measured at the same time. Moreover, this system has various functions
for wheel profile measurement but it is lower price.
This measurement system can make a measurement of flange/gauge automatic and replace aexisting wheel profile measurement device.

for laboursaving and accurate measurement

Measurement Condition

Features
1.
2.
3.
4.
5.
6.
7.

Non-Contact measurement of the outline of wheels in low-speed running
condition of train.
The laser beam for measurement is emitted only when a wheel is in ameasurement gate.
Outputs The measured value and top of wheel profile as measurement
result.
A measured wheel profile is superimposed on a unused wheel profile.
A measured value and profile are printable data.
Sends the data to a wheel control system.
Has general hardware and software and lower price.

Sensor Unit Layout

Rack for measurement

PCLCD

KeyboardPrinterController
Uninterruptible
power source
Connecting cableM
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