Scissor type agricultural chassis with adjustable wheel tread and chassis height and working method thereof

The invention discloses a scissor type agricultural chassis with adjustable wheel tread and chassis height and a working method thereof. According to the chassis device, two platform plates are horizontally arranged in a crossed mode, the two platform plates are hinged through a first hinge shaft and driven by a stepping motor to be opened and closed, the two ends of each platform plate are each provided with a first assembly composed of an electric cylinder, a steering motor, a connecting frame and a walking mechanism, and piston rods of the electric cylinders in the first assemblies are fixed to the platform plates; a cylinder body of the electric cylinder is fixed to one end of the connecting frame, a shell of the steering motor is fixed to the other end of the connecting frame, and an output shaft of the steering motor drives the walking mechanism to rotate. The multiple chassis devices are arranged in an array mode. The corresponding platform plates are driven to ascend and descend through the piston rod