Hot-Selling Highway Rotating Guardrail, Suitable For Dangerous Road
Sections
Introduction
Domestic and foreign traffic accident research data show that,
reasonably set to meet the protection requirements of the
guardrail, can effectively reduce the vehicle out of the roadside
guardrail or through the secondary collision with the chances of
collision, so as to avoid unnecessary property damage and
casualties. Rolling crash barrier is mainly used in small radius
curve section, tunnel entrance transition, interchange exit
triangle end and other dangerous sections. The increase of car
ownership makes the road bear the pressure of the vehicle running
too much, easy to appear sudden traffic accidents. In the highway
traffic accidents, a large number of accidents with the road on
both sides of the guardrail collision-related. Guardrail design can
make the runaway vehicle in collision with the guardrail to return
to the normal direction of travel, maximum absorption of impact
energy, reduce the injury to the driver and passengers. 
with the guardrail return to the normal driving direction, absorb
the impact energy to the maximum extent, and reduce the damage to
the
Highway rotating guardrail is suitable for dangerous road sections,
such as sharp turns, cliff edges, river edges, etc. Can greatly
reduce the severity of the accident. If driving at night, the
rotating guardrail has a night light mode. It can effectively
remind drivers to pay attention to roadside safety.
Main components
The rotating collision guardrail is mainly composed of column,
rotating barrel, casing, rubber cushion, swivel ring, beam,
reflective strip and bolt. The side view of the guardrail is shown
in the figure, using a column and four columns of the installation
method.
Composition
The rolling safety barrier is made of ethylene vinyl acetate
copolymer (EVA) and polyurethane composite material, which is
elastic, impact-resistant and wear-resistant and can effectively
prevent the rotating barrel from being shattered upon impact, and
the good recovery force of the rotating barrel also ensures that it
can quickly return to its original state after a serious impact.
Working Principle
The rotating barrel can also rotate freely on the column, through
the rotation of the rotating barrel will collision force
decomposition, drive the runaway vehicle incidence angle
decreasing, the correct completion of the vehicle export to reduce
the risk of secondary accidents. In addition, the bright color of
the rotating barrel can also improve the driver's attention to
ensure driving safety. The protection mechanism of the rotating
collision barrier is shown in the figure.
Safety Analysis
When the vehicle collides with the rotating guardrail, the vehicle
will drive the rotating barrel to rotate, and part of the lateral
impact force will be transformed into rolling resistance, which
will reduce the lateral and longitudinal acceleration values, thus
reducing the injury to the driver and passengers, and also reducing
the deformation and damage of the vehicle. As the vehicle collision
process, the longitudinal force is rolling friction, which is much
smaller than the traditional guardrail and the sliding friction
between the runaway vehicle, so the rotating collision guardrail
can make the collision time shorter, so that the vehicle out of the
speed increases, so that the collision process resistance becomes
smaller, so as to reduce the difficulty of the driver in the
collision process, so that the vehicle as soon as possible and the
guardrail out of the collision, the correct completion of the
guidance and reduce the risk of the second accident.
Paraments
| No. | Name | Specifications(mm) | Material |
| 1 | Roller | 345*490/350*510(Customized) | Polyurethane |
| 2 | Post | 140*2000*4.5(Customized) | Q235 |
| 3 | PVC Tube | 160*500*6.5(Customized) | PVC |
| 4 | Beam | 100*80*4.0 | Q235 |
| 5 | Rolling Circle | 182×145×6.0 | Polymer Ethylene |
| 6 | End Socket | 1300×230×4.0 | Q235 |
| 7 | Post Cap | 145×145 | Rubber |
| 8 | Bolt | M18*120 | Q235 |
| M18*180 | Q235 |
| M18*80 | Q235 |
| 9 | Nut | M20 | Q235 |
| Item | Specifications |
| Apparent Density (KG/m³) | ≥125 |
| Tensile Strength(MPa) | ≥1.15 |
| Elongation(%) | ≥320 |
| Compression Permanent Distortion (%) | ≥38 |
| Resilience(%) | ≥72 |
With the continuous optimization of the guardrail structure and the
continuous development of material science, rotating guardrail can
impact a higher level of guardrail protection requirements, the
application of dangerous sections of the highway can protect the
safety of the occupants and vehicles to a greater extent. Rotating
type collision guardrail guide and buffer performance compared with
the traditional guardrail have a breakthrough improvement. In
addition, rotating collision barrier and landscape natural
integration, can improve the road environment greening level,
long-term use will not only significantly improve the level of road
safety, but also can effectively reduce the direct economic loss,
has an important social and economic benefits.
