According to its knot, the double acting hydraulic cylinder can be divided into single piston rod type, double piston rod type and telescopic piston sleeve type. Its principle is the use of PASCAL's law made of the use of liquid pressure transmission machinery, there are many types. Of course, the use is also varied according to the need. Such as according to the type of liquid to transfer pressure, there are two categories of hydraulic press and hydraulic press. 600t hydraulic press A machine that uses liquid as the working medium to transfer energy to achieve various processes. Hydraulic press in addition to forging forming, can also be used for correction, press assembly, packaging, pressing and pressing plate. Hydraulic press includes hydraulic press and hydraulic press. The water-based liquid as the working medium is called the hydraulic press, and the oil as the working medium is called the hydraulic press. The 315t hydraulic press follows PASCAL's law when transferring pressure in a closed container. The hydraulic transmission system of four-column hydraulic press is composed of power mechanism, control mechanism, executive mechanism, auxiliary mechanism and working medium. The power mechanism usually uses the oil pump as the power mechanism, which is generally the integrated oil pump. The bow hydraulic press is generally composed of three parts: the machine (main engine), the power system and the hydraulic control system. Hydraulic press classification valve hydraulic press, liquid hydraulic press, engineering hydraulic press. Its characteristics and uses are described below. (1) Four-column hydraulic press double-acting single piston rod type hydraulic cylinder a hydraulic cylinder if only in a cavity of the hydraulic cylinder with a piston rod, that is, a single piston type hydraulic cylinder. Its characteristics are: because the distribution effect area of the two chambers of the hydraulic cylinder is not equal, so if the pressure is fixed and the pressure oil with the same flow is alternately input to the oil chambers at both ends of the hydraulic cylinder, the size of the pushing force of the piston or hydraulic cylinder and the speed of the reciprocating movement are not equal. When the rodless cavity is fed, the pushing force is large and the speed is slow; When the rod cavity is fed with oil, the pushing force is small and the speed is fast. Therefore, this hydraulic cylinder is suitable for the working stroke of a large force and slow speed, air return requires a small force and fast speed of the hydraulic transmission system. (2) Four-column hydraulic press double acting double piston rod hydraulic cylinder if the two cavities of the piston cylinder have piston rods, and can do two-way moving hydraulic cylinder, that is, double acting double piston rod hydraulic cylinder. The hydraulic cylinder is characterized by = because the piston diameter of the two chambers of the hydraulic cylinder is equal, that is, the piston has the same discharge working area in the two chambers of the hydraulic cylinder. Therefore, when the pressure oil with a certain pressure and the same flow rate is alternately transmitted to the two chambers of the hydraulic cylinder, the size of the pushing force of the piston or hydraulic cylinder and the speed of the reciprocating motion are equal. ③ Four-column hydraulic press double action telescopic sleeve hydraulic cylinder double fJ telescopic sleeve hydraulic cylinder system multi-stage hydraulic cylinder. This type of cylinder has large stroke and compact volume. According to its structure, it can be divided into single acting plunger sleeve type and l double acting sleeve type. Its characteristic is that the effective area of the sleeve at all levels is not positive, so when the pressure oil enters the lower cavity of the sleeve cylinder, the sleeve at all levels is small according to its diameter (first large and then small > extend in turn; On the contrary, the sleeves at all levels are retracted according to their diameter /N (first small and then large >). Acest tip de cilindru hidraulic este adesea folosit în sistemul hidraulic al echipamentelor de ridicat.
