Suspension type safety extension ladder

The utility model discloses a suspension type safety extension ladder, including that fixed knot constructs and extending structure, being connected with extending structure on fixed knot constructs,extending structure's top is connected with the workstation, and extending structure is including flexible bracing piece, halfpace rank and prevent the tong device, and the bracing piece that stretches out and draws back is cup jointed by flexible support column of several festivals and forms, and terraced step mount prevents the tong device and installs the both ends on the halfpace rank betweentwo relative flexible support columns, prevent that the tong device includes overcoat in the lasso on halfpace rank and the dog of being connected with lasso upper end or lower extreme. The bottom offlexible bracing piece is equipped with antiskid, and antiskid is including adjusting the seat, pressing handle, anti -skidding sucking disc and support bar. The utility model discloses simple structure, easy operation, conveni