The utility model relates to a support of tumbling that heavily blocks driver's cabin realizes the lightweight design, reduces the NULL cost, improves assembly production efficiency. Tumble the support by upset support part (1), lift hydraulic cylinder support part (2) and connect fixed portion (3) triplex and constitute, it connects upset support part (1) and lifts hydraulic cylinder support part (2) to connect fixed portion (3), upset support part (1) is provided with two coaxial through -holes, two coaxial through -holes are articulated through round pin axle and driver's cabin automobile body upper bracket, it is provided with and lifts the through -hole to lift hydraulic cylinder support part (2), the axis that lifts the through -hole is parallel with the axis of two coaxial through -holes, it is articulated with lifting hydraulic cylinder through the round pin axle to lift the through -hole, it fixes on vehicle frame to connect fixed portion (3).