Parallel four-connecting-rod side independent suspension system for wheeled robot chassis

The utility model discloses a parallel four-connecting-rod side independent suspension system for a wheeled robot chassis, which relates to the technical field of machinery and comprises a connecting part, an elastic supporting part and a driving part which are connected with one another. The top and the bottom of the suspension frame fixing piece are each rotationally sleeved with a first linear optical shaft, and the outer sides of the two first linear optical shafts are each fixedly sleeved with two check rings. Axial loads transmitted to the motor are dispersed through the thrust bearing, it is avoided that after multiple times of bumping, the output end of the motor is bent, and the movement stability of the robot body is affected, kinetic energy generated when the suspension motor connecting piece moves is absorbed through the negative pressure spring damper, the stability of the robot body in the movement process is guaranteed, and the service life of the robot body is prolonged. And meanwhile, the dev