液压缸演示文稿（Hydraulic cylinder presentation）.doc

液压缸演示文稿（Hydraulic cylinder presentation） Ppt documents may experience poor browsing on the WAP side. It is recommended that you first select TXT, or download the source file to the local view. The fourth chapter hydraulic cylinder The main form of hydraulic cylinder: hydraulic cylinder: the hydraulic energy can be converted into mechanical energy (actuating element), used to drive the workers Make a mechanism for linear motion (moving hydraulic cylinder) or swinging motion (swinging hydraulic cylinder, swinging hydraulic motor) Single acting type: two chamber can enter and leave the pressure oil, piston (cylinder) can be positive and negative A hydraulic cylinder that moves in two directions Double acting: only one cavity can enter and leave the pressure oil, and the piston (cylinder body) can only rely on Hydraulic force one-way movement, return need to rely on gravity / external force of the hydraulic cylinder Output power: Po=Fv, input power: Pi=pq Piston type hydraulic cylinder (double rod and single pole type) Double rod piston hydraulic cylinder: Working principle： F = (P1, P2) A = V = PI Four (D, 2, D, 2) (P1, P2) Q, 4q, 4q = A PI (D 2, D 2) Features and applications: When the diameter of the piston rod, the same two cylinder two chamber oil pressure and flow rate are equal when the piston (or cylinder) thrust and velocity in two directions are equal, suitable for reciprocating speed and output force of the same condition Double rod piston hydraulic cylinder Single rod piston hydraulic cylinder Piston type hydraulic cylinder (double rod and single pole type) Single rod piston hydraulic cylinder: Working principle： Lambda v = D2 = 2 V 2 v 1 D 2 D F1 = P1 A1 P = 2 A2 D 2 (P1 p 2) + D 2 P 244 Q 4q v 1 = = 2 pi D A1 PI PI F2 = P1, A2, P 2, A1 = V = 2 PI Features and applications: Q 4q = A2 PI (D 2, D 2) Four D 2 (P1 p 2) PI Four D 2 P1 When the oil supply pressure and flow rate remain constant, the speed and thrust of the piston in the two directions are not equa