The tank operation of the full-automatic feeding mixer is operated by hydraulic transmission. The hydraulic oil moves at a certain speed in the pipeline for a long time, which conflicts with the pipe wall. In addition to the resistance of various valves in the pipeline and the work of the oil pump, the hydraulic oil is compressed, which makes the hydraulic oil generate heat and the oil temperature rises. Hydraulic oil normal operation, there is a certain temperature is merit, but if beyond the temperature scale, not only will make the whole operation system unstable, but also will damage the seal and aggravate the oxidation and degeneration of hydraulic oil. The hydraulic oil heat dissipation system of small concrete mixer truck is generally composed of the following four parts, among which it is easy to have faults is used to maintain the stability of the whole circuit. Therefore, when presenting such problems, drivers of small concrete mixer should check whether it is stable and normal before troubleshooting other parts.
The heat exchanger of the full-automatic feeding mixer is similar to the water tank, and the hydraulic oil flows to cool the temperature. With the same principle of engine heat dissipation, small concrete mixer truck uses hydraulic oil radiator to cool down. The heat exchanger (also known as the radiator tank) is equipped with a motor to drive the electric fan for forced heat dissipation, so that the hydraulic oil can be kept at normal operation scale. The mechanical pointer above detects the negative pressure at the side of the pipeline. If the reading shows that the hydraulic oil filter may be blocked, it is only necessary to pull out the rubber plug on the top to let the pointer return to zero at the beginning of the display. If the reading at the back still shows and the solution can not be solved after pulling out the rubber plug, the hydraulic oil filter element needs to be replaced.
The electric fan driven by the motor of the fully automatic feeding mixer can take away the heat of hydraulic oil. The motor is the whole heat dissipation system side, and then pay attention to the key parts, the heat dissipation effect is good or bad, and the speed of the motor and the stability of the operation has a direct connection. It is directly powered by the electric control box which connects the vehicle battery, and uses the electric drive motor to work at high speed to take away the heat near the heat exchanger and cool the hydraulic oil.
Small concrete mixer temperature sensor to detect the temperature of hydraulic oil. The sensor installed on the oil inlet pipe of the heat exchanger is used to detect the temperature of the hydraulic oil entering the heat exchanger. It is used to remove the two fault points after clearing the safe fault.
Small concrete mixer control box is the brain, not to let the hydraulic oil high temperature. The control box is the brain beside the whole cooling system, similar to the ECU of the vehicle. Through its analysis, the data transmitted by the temperature sensor exceeds the predetermined temperature value, and then the circuit of the heat dissipation motor is connected to let the motor work to take away the temperature in the hydraulic oil. It is installed on the top of the maintenance of the entire circuit, so that the control box will not be easy to damage.