The concrete mixer has a standing operating system, which controls the loading, unloading, mixing and other functions of the concrete mixer, and realizes the high productivity and quality control ability of the concrete mixer. Changli in this chapter introduces the operating system of the concrete mixer.
The electric system of concrete mixer includes five travel switches and control box, which are mixer motor, brake motor for lifting, electric push rod motor for micro water pump. The control box is placed on the feeding rack for operation.
The control line voltage of the concrete mixer is 380V. Turn on the main power switch at the side of the control box and turn on the power indicator above the external power control box to indicate that the whole line has been powered. Above the electric control box of the concrete mixer is a time relay for controlling the water supply quantity of the water pump. The position of the screw pointer is the approximate linear relationship between the time (seconds) and the water supply quantity (rise), which can be determined by one similar adjustment after installation. There are four groups of eleven control buttons in the control box. Press these buttons to control the feeding, water supply and unloading mixing system. The control box is equipped with a secret lock to ensure safety.
The motor of concrete mixer is controlled by single drive. Hopper lifting and discharging door switch, with interlock control. When the hopper descends to the end position or rises to the discharge position to stop, it is controlled by the travel switch in the hopper travel limiter. In the limiter, there are two travel switches in the upward travel, one of which is in normal working state, and the other is used for safety protection.
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