As an efficient concrete production equipment, self loading concrete mixer trucks play an important role in the modern construction industry. The mixing drum, as the core component, is responsible for the uniform mixing of concrete. Operators can control the mixing drum inside the cab by manipulating the control lever or buttons, which relies on advanced control principles and technology.
The control principle of the mixing drum of self loading mixer truck is mainly based on the collaborative work of the hydraulic system, electrical control system, and mechanical transmission system. When the operator issues a command through a joystick or control button, the command is first received and resolved by the electrical control system. The electrical control system converts operating instructions into corresponding electrical signals and transmits them to the control valves in the hydraulic system through circuits.
After receiving an electrical signal, the control valve in the hydraulic system will adjust the opening and direction of the valve according to instructions, thereby controlling the flow direction and flow of hydraulic oil. Hydraulic oil is transmitted through high-pressure pipelines to the hydraulic motor of the mixing drum, providing power to the motor. The rotation direction and speed of the hydraulic motor are precisely controlled by the control valve, thereby achieving forward and reverse control of the mixing drum.
The mechanical transmission system is responsible for transmitting the power of the hydraulic motor to the mixing drum. Usually, hydraulic motors are connected to the mixing drum through a reducer, which can reduce the motor speed and increase torque to meet the working requirements of the mixing drum. In this way, when the hydraulic motor rotates, the mixing drum will also rotate accordingly.
In addition, to ensure the control accuracy and stability of the mixing drum, the control system is also equipped with sensors and feedback mechanisms. Sensors can monitor the speed and position of the mixing drum in real time, and feedback this information to the electrical control system. The electrical control system compares feedback information with operating instructions, adjusts the status of the control valve in a timely manner, and ensures accurate control of the mixing drum according to requirements.
In summary, the control principle of the mixing drum of the self feeding concrete mixer truck is achieved through the collaborative work of the hydraulic system, electrical control system, and mechanical transmission system. The operator only needs to issue instructions through the control lever or button in the cab, and the control system can accurately control the forward and reverse rotation of the mixing drum, thereby meeting the needs of concrete mixing. This control method not only improves work efficiency, but also reduces operational difficulty, providing strong support for the development of the modern construction industry.