Convenient-to-mount crawling ladder for maintenance for water conservancy project

• Main Author: WU ZHAOBIN
• Format: Patent
• Language: Chinese; English
• Published: 26.01.2021
• Subjects: DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; FIXED CONSTRUCTIONS; LADDERS

The convenient-to-install overhaul crawling ladder for the water conservancy project comprises a main body, a plurality of steps are welded to the middle of the main body at equal intervals, a rotating shaft is welded to the rear end of the inner bottom of the main body, the rotating shaft is rotationally connected with a one-eighth-circle-shaped movable plate, and a limiting groove is formed in the left side of the outer wall of the movable plate; a spring is clamped in the limiting groove, and a limiting column is clamped on the left side of the spring. Through the arrangement of the rotating shaft, the movable plate, the limiting hole and the oblique angle plate, when the crawling ladder obliquely supports a wall surface, the movable plate is driven to rotate, the appropriate limiting hole is selected, the movable plate rotates to the opposite position, the spring stretches to eject the limiting column out of the nested limiting hole, and meanwhile the oblique angle plate is close to the plane when the cra