Concrete mixer mixing drum speed control system, concrete mixer truck and concrete pump. The rotation speed control system of the mixing tub includes a variable displacement pump and a displacement control unit for the hydraulic motor, where in the hydraulic motor is used for driving the mixing cylinder to move and connected through the oil supply path variable pump and the oil supply path speed regulating valve.

In the composition of the concrete mixer machine, mixing drum mixing cylinder and are more important spare parts. So, in the production process, these parts of the mixed operation, can be very good to ensure the quality of concrete mixer production. But if there is any one part in the production process can not have a good match, then there will be a lot of problems, and even cause the concrete mixer failure.

Therefore, when using the concrete mixer for production, not only to carry out standardized operation, but also on the concrete mixer parts for regular maintenance. To ensure that in the production process each part can be a good use.

In the production process of the concrete mixer, an inlet and an outlet speed control valve are provided with the hydraulic pump of the outlet and inlet of the variable pump, respectively, and the displacement control unit is connected with the oil supply path, the displacement control unit can be controlled The pressure difference between the inlet and the output of the variable speed pump of the variable pump is greater than the first preset value to reduce the displacement. Concrete Mixer Mixing drum speed control system, concrete mixer and concrete pump truck can be used to prevent the stirring speed of the mixing cylinder and to promote the mixing quality, which has played a positive role in concrete.