DEVICE FOR REDUCING HYDRAULIC PULSATION PRESSURE WAVE FROM A HYDRAULIC PUMP OR A HYDRAULIC CYLINDER IN A HYDRAULIC SYSTEM WITHOUT DECOMPRESSION

摘要

PURPOSE: A reducing device of hydraulic pulsation pressure wave is provided to improve the safety of the hydraulic system, and to make the best use of space by decreasing pulsation pressure wave with a reducer between the hydraulic pipes without additionally mounting a damper in the hydraulic system. CONSTITUTION: A hydraulic pulsation pressure wave reducing device for damping pulsation pressure wave generated in using a piston pump or a hydraulic cylinder of a hydraulic system is composed of a pressure chamber(12) and a perforated tube(13). The diameter of the pressure chamber is two times as large as the diameter of the hydraulic pipe, and the diameter of the perforated tube is equal to the diameter of the hydraulic pipe. 1/3 of the entire surface area of the perforated tube is formed of a hole part(14), and hydraulic pulsation wave is streamed through the hole part and diffused to the pressure chamber to reduce pulsation noise.