Transcript New switch design as the tool to increase train traffic speeds

Railway
Research
Institute
Railway
Research
Institute
JSC
“VNIIZhT”
JSC
“VNIIZhT”
New switch design as the tool to increase
New switch
design
as the tool
to increase
train
traffic
speeds
train traffic speeds
Doctor of Engineering, Prof. Boris Gluzberg
Chief of Laboratory
«Switch designs
and Boris
technologies»
Doctor
of Engineering,
Prof.
Gluzberg
Chief of Laboratory «Switch designs and technologies»
Development objectives
1. Providing speeds on lines being reconstructed for speed and
high-speed traffic
2. Speed increase at station entries
1. Providing speed on the lines being
reconstructed for speed and high-speed traffic
Switch of R 65 type, 1/11, ( under the project 2956)
and exchange track on its basis (project 2968)
Design speed:
on straight main line of the switch - 250 km/h; on side line – 50 km/h
7 | Switches| 10.2012| VNIIZHT
Speed increase of train traffic
through switches (under the project 2726)
Design speed trough the switch – 200 km/h
Speed through the upgraded switch – 220 km/h
2 | Switches| 03.2012| VNIIZhT
Vibration of switch at speed of 220
km/h
Before modernization
After modernization
Speed increase of train traffic through switches (under the project 2750)
Design speed through switch – 140 km/h
Speed after upgrade of the switch – 160 km/h
3 | Switches| 03.2012| VNIIZhT
2. Increase in traffic speed at station entries
Dynamic-kinematical characteristics of typical projects of
switches in Russian railways
Rail type
Switch grade
Radii, m
switch
300,000
200,060
R65
1/11
4 | Switches| 03.2012| VNIIZhT
300,000
300,000
acceleration, m/s2
Suddenly
emerged
unredeemed
Parameter of
loss of
kinenatic
energy , m/s
25
0,160
0,241
0,120
40
0,412
0,617
0,191
50
0,643
0,964
0.239
25
0,160
0,160
0,120
40
0,412
0,412
0,191
50
0,643
0,643
0,239
60
0,925
0,925
0,287
Turnout curve
R65
1/9
speed, km/h
The rate of acceleration change when entering the turnout
curve and in the body of passenger car
while passing turnout
Rail type
Switch grade
Speed, km/h
Rate of acceleration change (maximum),
m/s3
Passenger car
ЦМВ
R65
1/9
R65
1/11
5 | Switches| 03.2012| VNIIZhT
Maximum
acceleration in the
body of car, m/s3
Freight car
25
0,10
0,26
0,9
40
0,40
1,03
2,2
50
0,79
2,01
2,5
25
0,07
0,18
0,9
40
0,27
0,69
1,9
50
0,53
1,34
2,2
60
0,91
2,32
2,6
Dynamic-kinematical characteristics
of suggested turnouts
Variant №
Rail
type
Switch
grade
Minimal
radii, m
1
2
Р65
Р65
1/9
1/11
275,000
400,000
3
Р65
1/14
600,000
4
Р65
1/15
620,000
5
Р65
1/15
690,000
6 | Switches| 03.2012| VNIIZhT
Rate of acceleration
Maximum
3
change (maximum), m/s acceleration
Unredeemed
in the body
Speed, km/h acceleration,
Passenger Freight car of passenger
m/s2
car
car, m/s;*
40
50
60
50
60
70
60
70
60
70
0,448
0,482
0,693
0,322
0,463
0,630
0,450
0,610
0,40
0,55
0,29
0,39
0,68
0,26
0,45
0,72
0,44
0,70
0,39
0,63
0,75
0,90
1,73
0,67
1,16
1,84
1,12
1.78
0,95
1,60
1,9
2,0
2,2
1,6
2,1
2,1
2,0
2,1
1,8
2.0
Switch of Р65 mark 1/22
Speed of movement on a straight main line - 250 km/h
Speed of movement on side line - 120 km/h
Offers to a cooperation
1
2
3
Team work in development of switches of flat marks for high speed traffic
Industrial engineering in Russia of switch parts base on European producers
Using VNIIZHT methods in research work, their aim is to improve design
speed of turnouts
CONCLUSIONS:
Development of new and modernization turnouts in current
operation is the effective tool to increase speed of trains
Effective use of switches for transportation can be increased
due to increasing traffic speeds in the yard neck
It is possible to increase traffic speed on switches and its
combinations at the branch, without yard neck reconstruction, with
minimum costs through the use of new geometry of switch curves
It is possible to minimize the costs to increase train speeds on
straight track of switch through its modernization directly on
tracks.
7 | Switches| 03.2012| VNIIZhT
Thank
for your
kind
Thank
youyou
for your
kind attention
attention!
D.o.E., Prof.
D.o.E.,
BorisProf.
Glusberg
Boris Glusberg
Chief of the «Switches»
laboratory
Head of the
«Switches» Laboratory
9 | Стрелочные переводы| 03.2012| ВНИИЖТ