
Railway Level Crossing Alarm
The Railway Level
Crossing Alarm give an alarm using sound, light and voice at the
same time. We choose LED signal lamp because it has a variety of
advantages such as long service life, low power consumption, far
visual distance, near- zero failure rate, all of which
disentangle maintenance men from fussy work.
Computer intelligent
control is used in the control system, which can analyze and
deal with all kinds of complex condition and give an auto alarm
when a train is approaching a level crossing.
Lamp pole of Signal
Host is made of hot-dip galvanized steel tube with
plastic-spraying-treatment surface and super anticorrosion
performance.
Passive magnetoelectric sensors are used
because they have strong anti-interference capability and can
identify signals well and truly.
ZDB—II Railway Level Crossing Alarm: It uses
two sensors to collect the data of an approaching train to a
level crossing. The two sensors are installed on two sides of
the rails near the level crossing, each side with one.
Signal Host
gives an alarm when a train is passing the first sensor, while
Signal Host
will stop the alarm when the train has passed the second sensor
completely.(The same is true with a passing train in an opposite
direction.)
ZDB—III Railway Level Crossing Alarm: it uses
three sensors to collect the date of a approaching train to a
level crossing. The first two sensors are installed on two sides
of the rails near the level crossing, each side with one. And
the third one is installed at the level crossing to stop alarm.
The Signal
Host gives an alarm when a train is
passing the sensors next to the block section, and stops the
alarm when the train has passed the third sensors completely.
(The same is true with a passing train in the opposite
direction.)
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Electric Barrier
Machine for Railway Level Crossing
Electric Barrier Machine for Railway Level
Crossing is used at a crossing of road and railway. It prevents
vehicles and passers-by from getting across to ensure the safety
when a train is approaching and passing the level crossing.
Electric Barrier Machine is made up of motor,
speed reducer, loop controller, barrier and balance weight.
Double-speed Single-phase High-sliding-difference Rate Condenser
Run Alternating Current Asynchronous motor , which is installed
an electromagnetic friction brake, is chosen in Electric Barrier
Machine .Three-stage reducer with friction clutch is adopted.
There is nonrigid
connection between the output axis of Electric Barrier Machine
and the barrier bracket .The nonrigid connection can prevent the
barrier from being broken when the barrier suffer a collision
,the flexibility of which is between 0 degrees and 15 degrees.
Two kinds of
materials, glass reinforced plastic and aluminum alloy, can be
used respectively in the manufacture of Electric Barrier
Machine.
Electric Barrier Machine
Controller
One-controlling-two
Controller: Each controller can control two Electric Barrier
Machines at one time .
One-controlling-four
Controller: Each controller can control four Electric Barrier
Machines at one time.
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