Inflation spring type shock absorber

Abstract

The invention discloses an inflation spring type shock absorber, which comprises a piston (13), a damping spring (7), a cylinder body (8) with an open left end, and a piston rod (9), wherein one end of the piston rod is connected with a fork truck bracket, and the other end of the piston rod is connected with the piston (13); the cylinder body (8) is sleeved outside the piston (13) and the piston rod (9); the piston (13) and the cylinder body (8) are in sliding fit; the left end of the cylinder body (8) is connected with a cylinder head (3); the piston rod (9) and the cylinder head (3) are in sliding fit; the damping spring (7) is sleeved on the piston rod (9), and two ends of the damping spring are supported between the piston (13) and the cylinder head (3); the side wall of the cylinder body (8) close to the cylinder head (3) is provided with a through hole (5) supplied for air to flow into the interior of the cylinder body (8); the circumferential surface of the cylinder body (8) is connected with a tubular joint (6); and the tubular joint (6) is communicated with the through hole (5). The shock absorber has the advantages of small volume and long service life.

Description

Technical field: [0001] The invention relates to a shock absorber, in particular to a gas spring type shock absorber connected between a forklift driving device and a forklift frame. Background technique: [0002] At present, a vehicle shock absorber generally includes a piston rod, a piston, a cylinder body and a damping spring; one end of the piston rod is connected to the vehicle bracket, and the other end is connected to the piston; the cylinder body is sleeved on the outside of the piston and the piston rod ; One end of the cylinder is connected with the vehicle driving device; the damping spring is located inside the cylinder and supported between the piston and the cylinder. When the car using the above-mentioned shock absorber is driving on an uneven road or the wheels pass by the top of an obstacle, the car body will jump up and down or vibrate due to its own gravity. At this time, the car bracket will drive the piston down under the action of the car body gravity ...

AI Technical Summary

Problems solved by technology

Since the damping spring in the shock absorber of the above-mentioned structure is only suitable for some light-weight vehicles, such as motorcycles and small cars, for some heavy vehicles, such as forklifts, manufacturers generally can only increase the shock absorber The number of springs in the shock absorber or the diameter of the spring wire and the outer diameter of the spring are increased to achieve shock absorption, but the increase in the number of springs or the increase in the diameter of the spring wire and the outer diameter of the spring increases the volume of the shock absorber

In addition, because the shock absorbing spring is in a state of repeated compression and rebound for a long time during the running of the car, the service life of the shock absorbing spring is easily shortened due to fatigue.

Images