DRIVING DEVICE OF CONCRETE MIXER FOR A VEHICLE LOADING

摘要

The device comprises an electric servo-controller(SC) & a hydraulic pump(p) driven by the engine. The hydraulic pump controls a hydraulic motor(Mo) driving the mixing drum of a concrete mixer. The servo-controller operated by an inner actuator(3) or an outer actuator(4) includes an electric motor(M) controlling the hydraulic pump to which an operation lever(6) is connected. The operation lever cooperates with a speed reducer(9) which is coupled to the electric motor(M) through a position detector(10) for the operation lever. When the electric motor is controlled by the inner actuator, the revolution of the pump is controlled and then the rotating direction or speed of the mixing drum is controlled.