There is no buffer device for the side lift buffer hydraulic cylinder of the existing three-stage forklift, so when the buffer hydraulic cylinder descends to the bottom, the plunger and the buffer hydraulic cylinder bottom, the second-stage movable gantry and the first-stage fixed gantry will have a strong impact , Causing forklift tremor; in addition, due to the pressure pulse of hydraulic oil, when the cylinder is lifted, the side lift cylinder and the main lift cylinder are prone to instantaneous linkage.
The purpose of the utility model is to provide a plunger buffer hydraulic oil cylinder, which is used for the forklift truck three-stage gantry side lifting cylinder, when the plunger reaches the cylinder bottom within a prescribed distance range and when the plunger rises to start, it has a buffer Shock absorption and pressure pulse reduction without affecting the performance of the forklift gantry system. The utility model has the advantages that the oil cylinder has the good effects of buffering shock absorption and reducing the starting pressure pulse of the oil cylinder, and has a compact structure, safety and reliability, and convenient maintenance.