Control arm european style of preventing skidding adjustment arm

The utility model discloses a control arm european style of preventing skidding adjustment arm, including adjustment arm casing, the worm axle, the steel ball, a spring, locating screw holes, positioning bolt, the worm hub connection is established to adjustment arm casing, the connecting axle is established to the worm axle, a plurality of locating holes of circumference equipartition of connecting axle, in the lower ball embedding locating hole of steel ball, the last ball of steel ball is in locating screw holes, the spring is established to the upper end, positioning bolt establishes the hexagonal in the upper end, the external screw thread is established to the hexagonal lower extreme, the position axle is set for to the external screw thread lower extreme, positioning bolt packs intobehind the locating screw holes, the location axle penetrates the downthehole of spring, external screw thread and the interior screw thread spiro union of locating screw holes, the upper end of spring is pushed down to the