This application provides an axle structure,
chassis device, and lawnmower, belonging to the technical field of vehicle
chassis devices. The axle structure includes an axle body and a swing arm part. The axle body includes an axle seat and an axle body, with the axle body supported on the axle seat and pivotally connected to the axle seat. The swing arm part includes two swing arms, which are respectively disposed on opposite sides of the axle body. Both swing arms are pivotally connected to the axle body, and both swing arms can swing relative to the axle body within a set angle range. When the wheel connected to the two swing arms is supported on the
road surface, both swing arms can swing to a position abutting against the axle body. The axle structure provided in this application, by setting both swing arms to be pivotally connected to the axle body and setting the axle body to be pivotally connected to the axle seat, allows the axle structure to move to a
stable state where both swing arms can abut against the axle body when driving on a
road surface with potholes. This ensures that the wheel connected to the axle structure has sufficient traction and prevents slippage.