Supporting power-assisting mechanism and vehicle

The utility model discloses a supporting power-assisted mechanism and a vehicle, the supporting power-assisted mechanism comprises a fixed support, a movable support, a coil spring shaft and a coil spring, the fixed support is provided with a first connecting structure used for being fixedly connected with a first component; the movable support is provided with a second connecting structure used for being movably connected with a second component, and one end of the second component is hinged to the first component. The fixed bracket is hinged with the movable bracket through a coil spring shaft; the coil spring is of a disc-shaped spiral structure, the outer end of the coil spring abuts against the movable support, the inner end of the coil spring abuts against the coil spring shaft, and the coil spring is suitable for accumulating elastic force when the included angle between the fixed support and the movable support is reduced and releasing the elastic force when the included angle between the fixed suppor