Lifting and drop rotating landing leg before trailer

The utility model provides a lifting and drop rotating landing leg before trailer, the landing leg passes through bearing frame and chassis swing joint, bearing frame fixed mounting is on the chassis, rotatory lift passes through the below fixed connection of chain and landing leg, rotatory lift fixed mounting is at the chassis middle part, the middle part of landing leg is provided with the locking hole, perpendicular locking mechanism is installed to the below on chassis, perpendicular locking mechanism and bearing frame difference symmetric position in the below and the top on chassis, rotation locking mechanism is still installed to the below on chassis, rotation locking mechanism is located between landing leg and the rotatory lift, the stabilizer blade is installed to the bottom of landing leg, the stabilizer blade can be for dull and stereotyped face stabilizer blade, also can be for the universal wheel stabilizer blade. The utility model discloses simple structure also can keep sufficient ground clear