Cause of action of hydraulic cylinder

The concrete conveying pump of 2 concrete conveying cylinder by 1 main hydraulic cylinder drive. 2 the main hydraulic cylinder is divided into a rod cavity communicated and rodless cavity communicated with 2 connection, as shown in the drawings. Since the 2 main hydraulic cylinders are connected with a rod cavity or a rod free cavity, in normal circumstances, the operating speed of the main hydraulic cylinder should be coordinated. But in the actual use of the process, there are 2 main hydraulic cylinder running speed is not the same phenomenon, that one is running faster and the other is relatively slow running.

This phenomenon will produce 2 kinds of bad consequences: first, will make the main hydraulic cylinder running slow in the absence of the completion of the push of the material stroke is forced to start to reverse, so that the end of the trip can not push the weak; two will lead to a rapid operation of the main hydraulic cylinder in pushing the material in place after a significant pause before reversing.

In the case of 2 main hydraulic cylinders, 1 main hydraulic cylinders have a serious internal leakage, that is, the above faults occur. The main reason for the leakage of the main hydraulic cylinder is the piston wear too large or piston seal damage.

When the B cylinder with rod cavity into the oil, the piston rod back to shrink and drive the concrete cylinder suction material, while promoting the A cylinder piston rod driven concrete cylinder feeding. At this point if there is a serious leakage of A cylinder, the piston rod push concrete material, the rod chamber pressure oil will leak into the rod cavity. Connected cavity pressure oil leakage, will cause the B cylinder to complete the normal suction stroke, A cylinder push material is not in place, but also must be accompanied by.

When the A cylinder with rod cavity into the oil, the piston rod back to shrink and drive the concrete cylinder suction material, while promoting the B cylinder piston rod driven concrete cylinder feeding. If there is a serious internal leakage of A cylinder, the rod chamber pressure oil will leak into the connected cavity, which will cause the B cylinder piston rod running speed, A cylinder piston rod running speed slow down.