The utility model discloses a single torsion bar formula driver's cabin tilting mechanism and front overhang support thereof, this front overhang support by front overhang left socle and front overhang right branch frame totally two front overhang supports constitute, each front overhang support all includes base and supporting hole, the base is including the vertical installation that is used for going on the side location on solebar, the supporting hole of each front overhang support is the counter -clockwise turning respectively, central line of making its supporting hole respectively with the projection angle of contained angle on the horizontal plane of the normal line of the vertical installation face of this front overhang support for alpha, angle alpha is preferred to be 50 /~1. This list torsion bar formula driver's cabin tilting mechanism, including the front overhang support to, torsion bar and upset support assembly, the front overhang support is to be aforementioned front overhang left socle and front overhang right branch frame. The utility model discloses an optimizing front overhang the bracket supporting pore structure, making driver's cabin mounted position right side inclined to one side in advance forward, it is crooked to have offset the driver's cabin that single torsion bar tilting mechanism caused, can guarantee that both sides supporting hole is concentric simultaneously again, makes the tilting mechanism atress better.