CONCRETE PUMP AND METHOD FOR ADJUSTING VALUE OF DRIVE PRESSURE TO SWINGING ACTUATOR THEREOF

摘要

A concrete pump and a method for adjusting the value of the drive pressure to the swinging actuator in the concrete pump are disclosed. The concrete pump includes a swinging actuator and an S-shaped distribution valve (17). The swinging actuator is driven by a swinging hydraulic loop and controls the swinging of the S-shaped distribution valve. The swinging hydraulic loop includes a swinging drive pressure control module. The swinging drive pressure control module adjusts the value F of the swinging drive pressure that the swinging hydraulic loop applies on the swinging actuator according to the first pressure value F1 and/or the second pressure value F2, wherein the first pressure value F1 is the oil liquid pressure value of the stirring hydraulic loop, and the second pressure value F2 is the oil liquid pressure value of the concrete cylinder hydraulic loop. The concrete pump avoids conditions that different attributions of the concrete or other different working conditions cause the actuator to provide over-high or over-low pressure to the S-shaped distribution valve. The concrete pump avoids the conditions that the S-shaped distribution valve generates high-speed impact and noise and the structural body generates inertia impact and vibration.