Beijing North Zhongyi Heavy Machinery Co., Ltd. : Safety of crane speed limit (4)
Description：(2) balance valve in series in the oil return circuitIn essence, the balance valve is a combination ....
(2) balance valve in series in the oil return circuit
In essence, the balance valve is a combination of one-way valve and external control and internal discharge sequence valve. It is installed in the truck crane and the locking principle is exactly the same as the hydraulic lock, that is, it is installed in the oil return road, and the oil return road is cut off after braking. If there is no other special requirements for the oil circuit, the relatively low price of hydraulic lock should be used as far as possible.
(3) improve the sealing of hydraulic components
After installing the hydraulic lock or balance valve in the oil circuit, it is not certain that the mechanism can be completely locked after braking. The sealing of the hydraulic cylinder (hydraulic motor) is also the key factor restricting the locking effect.
This article is organized by Beijing North Zhongyi Heavy Machinery Co., Ltd
