Ethylene Vinyl Acetate Copolymer Metal Beam Crash Barrier Roller
Safety Barrier Box Beam Guardrail
Intoduction
The rotating crash barrier is composed of rotating barrel,
crossbeam, column, reflective strip, casing, swing ring and
connecting parts. When the rotating collision barrier is out of
control vehicle impact, its rotating barrel in the impact force
rotating, can slow down the lateral impact speed of the
out-of-control vehicle, and drive the out-of-control vehicle back
to the correct direction of travel. The rotating collision barrier
can not only be used as road side guardrail, central divider
guardrail, but also as a small bridge, channel, bridge guardrail of
open culvert, its guiding performance, buffering performance
compared to traditional guardrail products have a breakthrough
improvement. In addition, the rotating collision barrier has
all-weather guidance performance and reduced transverse width
requirements, has the maximum buffer deformation length of flexible
guardrail and has the transverse deformation characteristics of
semi-rigid guardrail. The results of the crash tests show that the
RG-SA and RG-SB-2 rotating barriers have a SB (SBm) crashworthiness
rating. The comparison with other guardrail crash test results
shows that the rotating guardrail has advantages in occupant
acceleration, exit angle, exit speed and lateral deformation index.
As a new type of guardrail, the rotating tunnel entrance guardrail
has been used in recent years. The main component of the rotating
barrel is a flexible material made of polyethylene and EVA
(ethylene vinyl acetate copolymer), which can be used as a
longitudinal energy-absorbing structure. In the process of
collision between the vehicle and the guardrail, the rotating
barrel can drive the vehicle through its own rotation, reducing the
collision angle between the vehicle and the guardrail, thus
reducing the lateral force generated in the process of impact. The
rotating guardrail turns the sliding friction between the normal
guardrail and the vehicle into a smaller rolling friction. The
rotating tunnel entrance guardrail not only reduces the
acceleration of each component of the collision vehicle, reducing
the injury to personnel and reducing the degree of vehicle
deformation, but also reduces the collision time and increases the
vehicle exit speed. In addition, it reduces the vehicle's handling
resistance in a collision, helping the driver to operate the
vehicle quickly away from the guardrail to complete the guidance.
Rotating guardrail in the collision barrel colour setting can be
customized according to the needs of red, yellow or other colours,
to form a visual impact on the driver, with excellent guidance
function.
The rotating guardrail is mainly composed of column, swing circle,
rotating barrel, cross beam, waveform beam, reflective strip and
corresponding connecting parts. The rotating barrel is made of a
composite material of ethylene vinyl acetate copolymer (EVA) and
polyurethane, which is elastic, impact resistant and wear resistant
and can effectively prevent the rotating barrel from being
shattered upon impact. The resilience of the barrel also ensures
that it can be quickly restored to its original state after a
severe impact. The barrel chosen by Suzhou Bypass Expressway Co.,
Ltd. is orange, which has a high brightness reflection effect and
eye catching function, which can effectively improve the driver's
attention and reduce the incidence of accidents, thus ensuring the
safety of vehicles.
Features
(1) Fast opening.
The pluggable and removable structure enables 12 m (2 sections) to
be opened and pushed in 3 minutes in case of emergency, far better
than the norm of 10 m in 10 minutes.
(2) Safety upgrade.
Through rotational friction, the instantaneous impact energy is
transformed into rotational energy and friction energy, effectively
reducing the damage to the vehicle and the degree of injury to
personnel.
(3) Material saving.
The simple shape of the product greatly saves material costs, using
about 78 kg of material per linear metre, which is 50% to 80% of
the material used in similar products in the current market.
(4) Beautiful shape.
The beautiful shape and beautiful rotating barrels have a good
sight line guidance function, which can improve the road appearance
and effectively ease the
The effect is more obvious especially at night and in rainy days.
(5) Easy to install.
The compact design of the product allows for easy installation on
site after the unit has been assembled, greatly reducing the time
spent on site and effectively reducing the risk of road-related
operations.
(6) Simple maintenance.
The rotating bucket is made of EVA composite material, which is
resistant to chemical corrosion, ageing and weathering, and is not
easily damaged by vehicle impact, and does not need to be replaced
during its service life (10 years).
