Combined front suspension for engineering vehicle driving cab

A combined front suspension for an engineering vehicle driving cab comprises a plate spring (1), a plate spring support (3), a rotating base (4) and a spiral spring (2). The upper end of the plate spring (1) and that of the spiral spring (2) are coaxially hinged, the bottom end of the plate spring (1) is fixedly connected with the plate spring support (3) through a bolt, the plate spring support (3) and the rotating base (4) are hinged through bolts, and the rotating base (4) is fixed on a vehicle frame. The plate spring (1) only serves as a guide element and does not participate in energy transduction during little displacement on a sound pavement, and energy buffering is performed mainly by the spiral spring (2); under poor working conditions, when the suspension moves and triggers limiting, the plate spring (1) starts to function and cooperate with the spiral spring (2) to participate in kinetic energy buffering so as to adapt to complex working conditions. 种用于工程车驾驶室的复合型前悬置，包括板簧（1）、板簧支架（3）、旋转基座（4）和螺旋弹簧（2），