Simmons type damping system

The invention discloses a Simmons type damping system, and relates to the field of electric vehicle chassis. The system comprises: an upper chassis and a lower chassis, wherein the upper chassis and the lower chassis are arranged in parallel, the upper chassis and the lower chassis are connected through an adjusting piece, wheels are arranged on the lower chassis, the adjusting piece is used for adjusting the height between the upper chassis and the lower chassis, a vehicle body is arranged at the upper part of the upper chassis, a plurality of damping pieces are arranged on the upper surface of the upper chassis, the damping pieces comprise spring seats, and the spring seats are arranged in parallel up and down; hollow pipes, wherein the hollow pipes are arranged on the end faces of the spring seats respectively, and the hollow pipes slide relative to each other to limit the spring seats; and springs, wherein the springs are arranged on the outer surfaces of the hollow pipes in a sleeving manner and are arra