Rulers are in our daily life
An indispensable tool
Ruler and triangular ruler used in Xi
It can help us solve various problems
A tape measure used in garment making
It helps us to tailor our clothes precisely
Then you know in the railway wagon overhaul
Which rulers will be used?
Let's find out
When the employees of the Baotou West Depot are working
All kinds of rulers used
01 Inner diameter 1,000 parts table
This ruler with a small round table
I can measure the bearing of the running part of the vehicle
Inner diameter dimensions
Any slight inaccuracies
It can all be accurately identified
02 Outer diameter micrometer
Perfect fit of the axle journal with the bearing
It directly determines whether the truck can run smoothly
This is an outer diameter micrometer
The mating gap between them can be measured
Whether the standard is met
03 Wheel gauge
This ruler resembles the Greek letter "Ω".
Used to measure wheel size
If the wheelset size measurement is not up to standard
Wheelset fit will produce errors
Causes wheelset peeling and chaping
Affect the smooth operation of the train
04 The fourth type of checker for wheels
The wagon travels for a long time
There is a possibility that the wheelset will be worn and peeled off
As a result, the wheels are not round, resulting in vibrations
Affect the safety of train operation
This ruler is able to check the measurements
Is the data indicator of the wheel "healthy"
Keep track of wheelset wear
05 Wheelset inside pitch ruler
This one is long
It is like a ruler like a "pinnacle of the sea".
It can ensure the inside distance of the wheelset
Keep it within the normal range
It is convenient for subsequent bogie assembly work
06 shaft diameter gauge
Axle shaft body
It is an important part of the wheelset
The shaft diameter ruler as
A special vernier caliper
Specially designed to detect its "shape"
07 Depth Micrometer
The bogie is assembled with the axle
Numerous components are involved
This depth micrometer
It is possible to check the amount of bearing press-fitting
Whether it meets the specified requirements
08 Wheel Difference Measuring Ruler
This is a cool ruler
It is mainly used to measure the back shoulder of the journal
Difference in distance from the inner side of the hub
Whether it is within the specified range
It is the key to ensuring the performance of the bogie
09 Coupler height gauge
As a key component of vehicle connectivity
The assembly accuracy of the coupler is crucial
This coupler height gauge
Each coupler height can be guaranteed
are all within the prescribed range
This is a strangely shaped measuring tool
But it is a "good helper" for vehicle maintenance personnel
They are "together" with them every day
Jointly guarding the safe operation of the train
What other special rulers have you seen?
Let's share it
Contributed by: Baotou West Depot Rong Media Studio
Photo: Zhang Xuanrui, Liu Boting
Editor: Zhang Yuchen
Practice Xi Editor: Jin Feng Lu Ziwei
Review: Zhang Xiaozhe