RETRACTABLE SUPPORT LEG AND ENGINEERING MACHINE WITH SAME

摘要

A retractable support leg comprises a fixed support leg (10) and a movable support leg (20). When the movable support leg (20) stretches in place, coincidence portions of the movable support leg (20) and the fixed support leg (10) which are nested mutually are positioned and connected by a movable hinge pin, both the movable support leg (20) and the fixed support leg (10) are provided with pin holes, a retractable cylinder (30) of the movable support leg (20) can slide within a small displacement range along a stretching and retracting direction, and is provided with a transmission component, and the movable hinge pin is driven to be inserted or withdrawn from the pin holes via the transmission component when the retractable cylinder (30) slides. Coincidence lengths of the movable support leg and the fixed support leg of the support leg are shorter, spreading span of the support leg can be increased, and the stability of an integral vehicle can be further improved; simultaneously, a stressed manner of the support leg can be improved, and the structural reliability is enhanced. Further disclosed is an engineering machine provided with the retractable support leg.