Function and principle elevator hydraulic buffer

The hydraulic shock absorber is an energy buffer type, its working principle is: When the hydraulic shock absorber of the car and by the impact of heavy plunger

Downward movement of the compression cylinder oil, oil sprayed into the piston chamber through an annular orifice. When the oil through an annular orifice, since the cross-sectional flow

Sudden decrease in the area, will form a vortex, so that the liquid inside the particle hit each other pull, friction, kinetic energy is converted into heat dissipated, thereby

Consume the kinetic energy of the elevator, the car or the counterweight gradually slow to a halt. The use of hydraulic shock absorber damping effect of the liquid flow of buffer

The impact of the car or counterweight, when leaving the car or the counterweight buffer plunger return spring action, up reset, the oil flow again

Back to the fuel tank, a return to normalcy. Since the hydraulic shock absorber is a way to implement the energy consumption of the buffer, so no rebound effect.

Meanwhile, the variable rod effect, the plunger pressure ,, lower annular orifice cross-sectional area gradually becomes smaller, make the kind of electrical impulse through contact

Nearly uniform deceleration. Accordingly, the industrial shock absorber having a stable buffer advantages, in the case where the same conditions, the oil level is red

It can reduce the need to travel more than half of the buffer spring. Therefore, the hydraulic shock absorber for a variety of speed elevators.