Pneumatic automatic lifting column: air as the driving medium, through the external pneumatic power unit, drive the rise and fall of the cylinder. Hydraulic automatic lifting column: hydraulic oil as the driving medium. There are two types of control, the external hydraulic power unit (the drive part is separated from the cylinder) or the internal hydraulic power unit (the drive part is placed inside the cylinder) to drive the cylinder up and down. Electromechanical automatic lifting: the lifting of the cylinder is driven by the motor built in the cylinder.
Semi-automatic lifting column: the rising process is driven by the cylinder's built-in power unit, and the descending process is completed by human power.
Lifting column: the lifting process needs to be completed by manual lifting, and the falling depends on the weight of the column itself. Movable lifting column: the column is designed separately from the base, which can be folded up when the column does not need to play a controlling role.
Fixed column: the column is fixed directly with the road surface. The main application occasions and advantages and disadvantages of each type of cylinder are different. For some high-security application sites, such as military bases, prisons, etc., it is necessary to use the lifting column of anti-terror level. The column thickness should be more than 12mm compared with the lifting column of general civil grade, which is 3-6mm. In addition, the installation requirements are not the same.
Currently, there are two international certification standards for high-security anti-terrorism road piles:
1. PAS68 certification in UK (subject to PAS69 installation standard);
DOS certification by the security bureau of the U.S. department of foreign affairs. The 7.5t truck was hit at 80KM/H, the truck was stopped in place, and the roadblocks (lift pillars, road piles) worked as usual. Although the performance of the lifting column of civil grade is slightly worse than that of the column of anti-terror level, its protective performance can fully meet the needs of civil security, and it is used frequently in daily life. It is suitable for large traffic flow and medium safety requirement. It can be widely used in Banks, institutions, research and development centers, power stations, highways, industrial parks, high-end villas, high-end office buildings, luxury stores, pedestrian streets and other places. With the strengthening of domestic anti-terrorism situation, it is particularly important to protect the sensitive areas of buildings. Lifting column is being accepted by more and more users because of its safety, beauty and other advantages. But lifting column products into the Chinese market practice is short, market accumulation and feedback is little, and demand is suddenly inflated. As a result, the products on the market are mixed. A large number of users and integrators have fallen victim to the profit of some bad businessmen.