Special vehicle transfer case control method

The invention provides a special vehicle transfer case control method. Control of a transfer case is crucial to a loading system of a whole pump truck, and the reliability and stability of the loading system are affected by the time of combination and separation of the transfer case. Switching between operation and driving is achieved through the loading controller, the loading operation switch, the driving switch, the PTO switch, the transfer case operation valve and the transfer case driving valve, the state of the transfer case is judged through the operation in-place switch and the driving in-place switch, and next operation is conducted according to the state of the transfer case. And the reliability and the safety of the whole loading system are improved. 本发明提供了一种专用车分动箱控制方法。分动箱的控制对整个泵车的上装系统至关重要，分动箱的结合、分离的时机影响着上装系统的可靠性、稳定性。本发明通过上装控制器、上装作业开关、行驶开关、PTO开关、分动箱作业阀、分动箱行驶阀实现作业、行驶之间的切换，并通过作业到位开关、行驶到位开关判断分动箱的状态，并根据分动箱的状态进行下一步操作，提高了整个上装系统的可靠性、安全性。