The differential pressure signal control and driving device of the regulating valve of the main oil passage of the full-automatic concrete mixer are used to regulate the discharge inlet of the variable displacement pump, so that the rotation speed of the mixing drum is rapidly reduced. The sampling speed of the mixing drum and the rotation speed of the cylinder are greater than the preset speed value, so as to reduce the rotation speed of the mixing drum.

拥有自动化生产系统的混凝土全自动搅拌车，生产的时候大多都要依赖控制系统的操作，才干很好的完成生产。

With the automatic production system of the concrete mixer, most of the production depends on the operation of the control system to complete the production.

搅拌车的搅拌鼓的旋转速度控制系统和一个混凝土搅拌车混凝土泵车搅拌，以减少搅拌筒的旋转速度的动摇，从而改善混凝土搅拌质量。

The rotary speed control system of the mixing drum of the mixing truck and a concrete mixing truck concrete pump truck are used to reduce the shaking of the rotary speed of the mixing drum, so as to improve the quality of concrete mixing.

混凝土全自动搅拌车生产过程中，为了达到搅拌鼓的旋转速度的控制系统，包括变量泵是用来驱动搅拌缸运动的液压马达的数量控制部的要求，液压马达通过供油路径和变量泵的连接与所述油通路上设置的速度调节阀，入口和入口分别与变量和泵出口连接的液压马达和所述被连接到进气口。

In the production process of the automatic concrete mixer, in order to achieve the control system of the rotation speed of the mixing drum, including the requirement that the variable pump is the quantity control part of the hydraulic motor used to drive the mixing cylinder, the hydraulic motor is connected with the speed regulating valve set on the oil passage through the oil supply path and the variable pump, An inlet and an inlet are respectively connected with a hydraulic motor connected with a variable and a pump outlet and the inlet is connected to an air inlet.

对于混凝土全自动搅拌车在生产中，所述速度调节阀所述调速阀的入口和出口，通过油路分别连接的漏极量的漏极量控制单元与控制单元连接，所述速度调节阀是能够在进口和出口的压力差大于所述预设值，该值控制所述的变量泵，其量减少了。

For the full-automatic concrete mixer in production, the speed regulating valve, the inlet and outlet of the speed regulating valve are respectively connected with the leakage control unit of the leakage amount through the oil circuit, and the speed regulating valve is able to control the variable displacement pump when the pressure difference between the inlet and outlet is greater than the preset value, and the amount is reduced.