A concrete pump has the following main technical parameters: delivery displacement, outlet pressure, motor power and distribution valve form. According to the new national standards, these main parameters are known from the model of the concrete pump. 
From motor power
The motor power of a concrete pump is the precondition for determining the outlet pressure and the delivery volume. When the motor power is constant, the pressure increase will reduce the delivery volume; on the contrary, reducing the outlet pressure will make the delivery volume increase. In order to ensure that the concrete pump has a large conveying capacity, and can have a certain outlet pressure and the matching economic power, in the design of the concrete pump, most of the constant power piston pump is used; that is, the constant power value After selection, when the outlet pressure rises, the output displacement of the oil pump will automatically decrease, reaching the value corresponding to the power design; if it is necessary to achieve high outlet pressure, and want to obtain a large amount of transportation. The only way is to increase the motor power. Therefore, in the new national standard, the concept of capacity index of concrete pump (measured in MPa·m3/h) is quoted; that is, the product of the actual outlet pressure of the concrete pump and the actual delivery volume per hour. The greater the capacity index, the greater the power of the motor, thus achieving the goal of large displacement and high lift.