Bionic self-adaptive balancing forestry chassis hinge device

The utility model provides a bionic self-adaptive balancing forestry chassis hinge device belonging to the technical field of a vehicle chassis. The hinge device comprises a rear underframe, a bionic double-ball hinge, cow horn buffers, a buffer airbag pair and a front underframe. The whole hinge device adopts three-stage buffering, including soft buffering, cow horn buffering and airbag buffering in joint soft tissue respectively; the rear underframe and the front underframe are arranged symmetrically and are connected through the bionic double-ball hinge; the open ends of the rear underframe and the front underframe face outside; the cow horn buffers are symmetrically arranged on the bionic double-ball hinge; one end of each cow horn buffer is fixed on the bionic double-ball hinge; and the other end of each cow horn buffer is arranged in a groove of the front underframe through the buffer airbag pair. Owing to the three-stage buffering, the hinge device is beneficial to improving the snaking flexibility and the running stability of a forestry vehicle, simplifying the overall structure of the vehicle and lowering noise and energy loss.