Two classification of piston type hydraulic cylinder

The piston type hydraulic cylinder can be divided into two kinds of double rod and single rod type structure, the fixed way of the cylinder with the fixed and two kinds of piston rod.

(a) double rod piston hydraulic cylinder

Figure 9, 2 for the double rod piston cylinder diagram. Both sides of the plug are provided with a rod, when the same diameter of the two piston rod, cylinder two chamber oil pressure and flow are equal. Therefore, the hydraulic cylinder is often used in the same situation, such as the speed of the reciprocating movement and the load.

Figure 2, 9A for the cylinder of the cylinder of the structure of a double - rod piston cylinder. When the cylinder of the left chamber into the pressure oil, the right chamber back to oil, the piston drives the working table to the right to move -1, the right chamber into the pressure oil, the left cavity back to oil. The moving range of the working table is three times higher than the effective length of the cylinder. Hydraulic system for small equipment.

Figure 2.9b is a schematic diagram of the piston rod fixed type double cylinder plug tim. The radial hole center hole and the piston hydraulic oil through the hollow rod, Gu C live in D, a hydraulic cylinder. When the left chamber of the cylinder is in the pressure oil, the cylinder moves the working table to the left. Its movement range is slightly more than two times the effective stroke of the cylinder, the hydraulic system used for large and medium sized equipment used in travel.

(two) single rod piston hydraulic cylinder

Figure 2.10 for the single rod cylinder, including the principle diagram. One side of the plug rod is Tim, two cavity effective working area is not equal. When the cylinder two cavity respectively, and the same time, the oil supply pressure and flow, the piston (or cylinder) in the two direction of the thrust and movement speed is not equal.

Single rod piston cylinder, whether it is fixed, or the piston rod fixed, the operating range of the operating range is slightly greater than the effective stroke of the hydraulic cylinder two times.