Precautions for hydraulic components
(3) the piping requirement is that the line is the shortest, the turning is as low as possible, and the highest part of the line should set up the exhaust device so that it can be released when it is started. (4) when the rubber hose is installed, the sharp turn should be avoided, and its bending radius is greater than (9 ~ l0) D (D). Don't bend at the end of the joint, and ask for the length of the hose to the beginning of the curve. Hose work should not be reversed. (5) the suction pipe must not leak gas, nor should the resistance be too large, in case the inlet gas or oil suction difficulties produce cavitation.
Precautions for hydraulic components
(3) the installation of hydraulic cylinders should be strong and reliable, to prevent thermal expansion, when the stroke is high and the temperature is high, the end of the cylinder must be kept floating. The sealing ring of the hydraulic cylinder should not be too tight, especially the U ring, lest the resistance be too big. (4) hydraulic pump shaft and motor drive shaft not axiality deviation should be less than 0. LMM, generally adopts flexible coupling connection, are not allowed to use tape drives the pump shaft rotation directly, in case the pump shaft by the radial force is too large, affect the normal operation of pump. The rotating direction and the inlet and outlet of the hydraulic pump shall meet the technical requirements. (6) the oil suction height of all kinds of hydraulic pumps is less than 0.5 mm.
(6) return the tubing to the oil tank below the tank surface to prevent the splash from creating bubbles. The return tubing of the overflow valve cannot be directly connected to the inlet of the pump, it must be through the tank, otherwise the oil temperature will be too high. (7) all piping installation program is divided into two times, first for trial assembly, pipe fittings and flange welding will be in the right position, when all of qualified pipe fitting, tear open come down to pickling before installation. Other hydraulic components (1) all hydraulic components shall be under pressure and seal test, and can be installed in the rear. All automatic control instruments should be calibrated before installation to avoid errors.
