High-strength aluminum portable crawling ladder

The utility model discloses a high-strength aluminum portable crawling ladder. An arc-shaped handrail is arranged at the uppermost end of the long ladder; a short ladder is arranged on the right sideof the long ladder; the long ladder and the short ladder are connected through joint locks in a penetrating manner; a bolt I is arranged in the center of the joint lock; two rotating shafts I are nested on the bolt I; crawling ladder sleeves are welded on the rotating shafts I; the ladder stand sleeve is connected with the long ladder and the short ladder through bolts; a limiting block of an arcstructure is welded to the upper end of the first plug pin. The long ladder and the short ladder are connected through a first electric telescopic rod. A power switch I is arranged on the side surfaceof the long ladder; a power switch II is arranged below the power switch; the input end of the motor of the electric telescopic rod I is electrically connected with the output end of a power switch I; supporting plates are arr