Safety ladder for electromechanical installation of air conditioner

The safety ladder comprises a climbing frame supporting box, sliding rails are fixedly connected to the front position and the rear position of the top of the right side of the climbing frame supporting box, crawling ladders are slidably connected to the inner surfaces of the sliding rails, and electric air cylinders are movably connected to the front position and the rear position of the top of the left side of an inner cavity of the climbing frame supporting box through movable shafts. By arranging the crawling ladder, a worker can conveniently reach the top of the climbing frame supporting box to conduct air conditioner mechanical and electrical installation, by arranging the sliding rail and the electric air cylinder, the angle of the crawling ladder can be adjusted, meanwhile, the crawling ladder can be folded during moving, occupied space is reduced, and the working efficiency is improved. By arranging a servo motor, a threaded rod, a threaded sleeve, a push rod and a bearing plate, moving wheels can be