Qingdao TaiCheng transportation facilities Co.,Ltd. |
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Crash cushion is a device that can stop the vehicle safely and change the driving direction of the vehicle to avoid serious injuries to passengers by absorbing the collision energy of the vehicle. Its main function is to reduce the severity of the accident. On the other hand, it also plays a warning and inducing role through its surface color and graphic symbols.
Kinetic energy principle anti-collision pad is generally composed
of the end, energy absorbing material, both sides of the
beam,diaphragm and back support. After a vehicle collides with the
anti-collision pad, it absorbs the energy of the colliding vehicle
through the deformation of the end part and energy absorbing
material, and the back support is used to resist the impact force
of the vehicle.
Energy absorbing material is generally foam material or rubber
material, the principle of the anti-collision pad for the front and
side of the vehicle has a good effect of energy absorption and
guidance, and the system after the collision, the main components
can be reused, convenient and fast maintenance and low cost, the
disadvantage is a little more complex and high cost of the initial
installation.
The principle of momentum conservation is generally composed of
sand filling or water filling anti-collision cylinders (piers) of
different masses arranged in a certain order. After a vehicle
colliding with the anti-collision cushion, the momentum of the
vehicle is transferred to the anti-collision cylinder in turn,
which reduces the speed of the vehicle and the anti-collision
cylinder in turn, and finally makes the speed of the vehicle lower
than 15km/h.
Traffic crash cushions and terminals setting principles:
1. If the roadside guardrail is located within the width of the net
highway area without safety treatment, the upstream end of it shall
be equipped with crash cushions or anti-crash terminals.
2. Directed crash cushions should be installed at the main
diversion end, ramp diversion end, tunnel entrance and other
positions of the expressway. If the tunnel entrance and the outside
guardrails have been handled by guardrail transition, the crash
cushions may not be installed.
3. The beginning of the central guardrail of the first-class
highway, and the middle pier end of the bridge that crosses the
expressway, should be equipped with directed crash cushions .
4. The front end the guide island in the toll station can be
provided with non-directed crash cushions.
5. If there are special forms of dangerous obstacles within the
width of the calculated net zone on the highway side and no other
means of safety and effective protection can be adopted, directed
crash cushions and non-directed crash cushions should be set.
It has a guiding anti-collision cushion structure with the protection level reaching TS, TA and TB, and its safety performance meets the requirements of the Highway Guardrail Safety Performance Evaluation Standard (JTG B05-01 -- 2013). It can be applied to the main diversion terminal, ramp diversion terminal, tunnel entrance, middle pier end of the bridge, toll island, front end of special obstacles and upstream end of some roadside guardrail, etc.
The guide cushion and guardrail standard section have smooth
transition connection, which meets the requirements of standard
specification.
It has an efficient stage-by-stage buffering and energy-absorbing
structure, which has been verified by the collision test of real
cars. It has a large safety reserve and high safety performance.
Modular design, easy to install, energy absorption components can
be partially replaced, low maintenance cost.
FAQ:
1.Q: Are you trading company or manufacturer ?
A: We are factory.
2.Q: How long is your delivery time?
A: 15-20 days if the goods are not in stock, it is according to
quantity.
3.Q: Do you provide samples ?
A: Yes, we could offer the sample for free charge but do not pay
the cost of freight.
4.Q: What is your terms of payment ?
A: For the new customer we choose 30% TT for subscription and 70%
TT before the delivery.