Hydraulic lifting column is a kind of automatic lifting road pile with hydraulic motor as the power unit

Hydraulic lifting column is a kind of automatic lifting road pile with hydraulic motor as the power unit. It can be divided into hydraulic integral lifting column and hydraulic split lifting column. Their power units are hydraulic motors. Also known as lifting ground column, lifting road pile, anti-collision road pile, hydraulic lifting column, isolation pile. English name Bollard. The word Bollard was originally used to describe short, vertical columns, which were often used when large ships were moored in ports. The term has now been extended to refer to the various institutions that manage pedestrian traffic, protect critical infrastructure, set boundaries and distinguish roads.

The elevating columns are broadly divided into three categories:

1. Pneumatic automatic lift column:

As a driving medium, air drives the cylinder to rise and fall through an external pneumatic power unit.

2. Hydraulic automatic lifting column:

Hydraulic oil as the driving medium. There are two modes of control, namely 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.

3. Electromechanical automatic lift:

The cylinder is driven up and down by a motor built into the cylinder.

Semi-automatic lifting column: the ascending process is driven by the power unit built into the cylinder, and the descending process is completed by manpower.

A brief analysis of the hydraulic system.

The function of the hydraulic system is to increase the force by changing the pressure. A complete hydraulic system consists of five parts, namely, power components, actuators, control components, auxiliary components (accessories) and hydraulic oil. Hydraulic system can be divided into two types: hydraulic transmission system and hydraulic control system. Hydraulic transmission system to transfer power and motion as the main function. Hydraulic control system to make the hydraulic system output to meet specific performance requirements (especially dynamic performance), usually said the hydraulic system mainly refers to the hydraulic transmission system.

Now that we have a simple understanding of the hydraulic system, let's analyze the advantages and disadvantages of the lifting column using the hydraulic system.

Advantages of hydraulic system

1. Small size and light weight;

2. High stiffness, high precision and fast response;

3. Large driving force, suitable for heavy load direct driving;

4. Wide speed control range and various speed control modes;

5. Self-lubrication, self-cooling and long life;

6. Easy to realize security protection.

Disadvantages of hydraulic system

1. Poor resistance to working fluid pollution;

2. Sensitive to temperature changes;

3. Difficult manufacturing and high cost;

4. It is not suitable for long-distance transmission and requires hydraulic energy.

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