Lifting column, also known as lifting column, lifting road pile, anti-collision road pile, hydraulic lifting column, isolation pile, etc. English nameBollard。BollardThe term originally describes a short vertical column, which is often used when large ships are moored in ports. Now its meaning has been expanded to describe the various facilities that manage pedestrian traffic, protect critical infrastructure, set perimeters, and distinguish roads.
Fixed metal bollards are the most common. They are generally about high36The painted steel columns, with the interior watered with cement, are mounted on the ground. Some bollards are square, but most are cylindrical, with angles or flat cap eaves. The size, color, texture, shape and function of the bollards are numerous. They are either fixed, movable, or stretchable, or can be decorated as an ornament with the original steel pipe guard.
Many bollards have aesthetic functions, especially metal bollards, which are used to prevent damage to pedestrians and buildings by vehicles and can be used as the easiest way to control access or as guardrails to circle specific areas. They can be individually fixed to the ground, or they can be lined up to close roads and keep vehicles out, thus ensuring safety. Metal guardrails fixed to the ground act as long-term fences, while retractable and movable guardrails guarantee access to certified crowd vehicles.
There are three main applications for bollards----Construction (decoration), safety (impact-resistant) and landscaping (peripheral protrusion). All bollards can be shared in architecture and landscaping, with only differences in style, shape and material. When it comes to safety applications, different bollards are used to block different objects. For example, the bollards used to stop traffic are different from the bollards used to deal with protective (shock) problems. When it comes to safety applications, the first consideration is given to the size of the vehicle and the speed of the vehicle at the time of impact.
After years of application, today's bollards have expanded into a variety of styles. Its main categories:
1, air pressure automatic lifting column: air as a driving medium, through the external air pressure power unit, the drive column rise and fall.
2, hydraulic automatic lifting column: hydraulic oil as the driving medium. There are two control methods, i.e. the column rises and falls by means of an external hydraulic power unit (the drive part is separated from the column) or by the built-in hydraulic unit power unit (the drive part is placed in the column body).
3, electromechanical automatic lifting: through the column built-in motor drive column lift.
4Semi-automatic lifting column: The ascent process is driven by the power unit built into the column and is done by human force when falling.
5, pull-up column: the rise process requires human pull to complete, when falling depends on the weight of the column itself.
6, movable lifting column: the column and the base part separation design, to be held up when the column does not need to act as a control.
7Fixed column: the column is fixed directly to the road surface.
The main use of various types of bars and advantages and disadvantages are different, in use need to be selected for the actual project.
Lifting columns can be widely used in banks, institutions, troops, detention centers, prisons, research and development centers, power stations, highways, industrial parks, high-end villas, high-end office buildings, luxury stores, squares, pedestrian streets and other places.