Chassis and working machine

The utility model relates to the technical field of engineering machinery, and provides a chassis and an operation machine.The chassis comprises a chassis body, wheels and an adjusting piece, the adjusting piece is arranged between the wheels and the chassis body, and the two ends of the adjusting piece are connected with the chassis body and the wheels respectively; the adjusting piece is arranged to be capable of adjusting the relative position between the wheel and the chassis body in the target direction, and an included angle is formed between the target direction and the transverse direction of the chassis body and between the target direction and the longitudinal direction of the chassis body. By means of the arrangement, the wheel tread and the wheel base are adjusted at the same time, the adjusting efficiency is improved, and the problem that in the prior art, the wheel tread and the wheel base need to be adjusted independently, and consequently the adjusting efficiency is low is solved. 本实用新型涉及工程机械技