In recent years, the lift office chair is prominent in the office chair, and it develops faster and faster. With the continuous development of social economy, people have higher and higher requirements for the office chair, and the lift office chair is no exception. How much do you know about it? What do you know about the explosion of office chair? Now, the staff chair factory will give you a brief analysis.
According to whether the lifting device used by the seat is pneumatic or hydraulic, the lifting chair can be divided into two types: pneumatic lifting chair and hydraulic lifting chair. At present, the air lift is commonly used in our office. And most of the seat explosions we talked about also happened on this kind of chair. This paper introduces the working principle of the pneumatic lift, the causes of the explosion and the ways to avoid it, as follows:
1. How it works
There is an air cylinder in the air lift, which is composed of piston, piston rod and cylinder barrel. The lift can be lifted, that is, the piston rod in the cylinder moves up and down. In addition, the gas filled by the pressure lift is nitrogen, the concentration is generally more than 99%, and the pressure is about one or two atmospheres.
2. Cause of explosion
Under normal circumstances, the pressure bar is sealed, there are many sealing rings in it, and the filling gas can work normally as long as it has one or two standard atmospheric pressure. To lift the chair, just pull the mechanical rod hanging outside the office chair. If the quality of the air pressure rod is not up to standard, people sitting on it will crack the sealing device instantly, and the rod may rush out, and the strong air pressure inside may explode at any time.
If the nitrogen filled in the air pressure rod sinks into oxygen or the nitrogen concentration is less than 90%, explosion may occur under high temperature or frequent friction.
3. Methods to avoid explosion of pneumatic lift
(1) Buy air lift, we must pay special attention to the quality of the air pressure rod and chassis.
(2) Shandong office chair factory suggests that chairs should not be rotated repeatedly when they are used. After using for a period of time, it should be checked in time. Once cracks and looseness are found, it should be repaired and replaced in time.
(3) We must choose regular manufacturers and brands, do not covet cheap to buy inferior goods.