Beijing North Zhongyi Heavy Machinery Co., Ltd. : Safety of crane speed limit (8)
Description：In order to obtain a uniform rate of decline, two points should be paid attention to when designing ....
In order to obtain a uniform rate of decline, two points should be paid attention to when designing the system: one is not to save costs, simply use the general one-way valve and external control and internal leakage type sequence valve and connect the combination to replace the balance valve. This is because although the balance valve is a combination of one-way valve and external control and internal leakage type sequence valve, the sequence valve has been added with double spring, damping holes and other devices to reduce the vibration of the valve core; Two is the control of the balance valve to the throttle valve in series, so that the sequence of the spool action "sluggish", not due to small changes in external pressure and its speed has changed. In the speed limit scheme, the effect of using the balance valve is the most ideal, is the preferred method.
This article is organized by Beijing North Zhongyi Heavy Machinery Co., Ltd
