What is high and low pressure switching and hydraulic gear ratio on concrete pumps?
To hydraulic cylinder, for example: cylinder diameter 500MM, working stroke 10000MM, to promote the load 1T.
High and low pressure pump is generally double pump; high pressure to provide high pressure (workload), low pressure to provide high flow (rapid feed).
Concrete pump on the high and low voltage switch and hydraulic transmission ratio means:
Piston rod is not in contact with the load: the liquid to promote the rapid movement of cold, because the cylinder needs a lot of oil to the cylinder, then low-pressure large flow pump work.
