Three-connecting-rod two-point type frame connecting device for all-terrain vehicle

The utility model discloses a three-connecting-rod two-point type vehicle frame connecting device for an all-terrain vehicle, which comprises a rocker arm, an engine and a cradle, a pair of mounting points is arranged on the engine, the rocker arm is rotatably connected with the mounting points, a detachable supporting seat is arranged at the tail part of the engine, and the supporting seat is connected with the mounting points. Wherein a buffer shaft sleeve is arranged on the supporting seat, and the cradle is connected with the supporting seat through the buffer shaft sleeve. Due to the factthat the vehicle frame size precision requirement is low, the three-connecting-rod structure is stable, the whole vehicle vibration performance is obviously improved, the rear supporting base is directly fixed to the position near an engine output shaft, and when a vehicle runs, the large and small chain wheel transmission structure is stable. And two-point assembly is adopted, so that the numberof assembly parts is smal