63results about How to "Guaranteed operating environment" patented technology

The invention discloses a scaling ladder structure for fire fighting, and belongs to the technical field of fire fighting equipment. The scaling ladder structure is composed of a first-stage scaling ladder, a second-stage scaling ladder, a third-stage scaling ladder, a sliding groove, a sliding rod, motors and gears; and the first-stage scaling ladder is connected with a scaling ladder platform through a rotating shaft, the sliding groove is formed in the bottom of the first-stage scaling ladder, a sliding block is arranged in the sliding groove, the top end of the sliding rod is connected with the sliding block, the bottom end of the sliding rod is connected with the scaling ladder platform in a hinged mode, the second-stage scaling ladder is arranged inside the first-stage scaling ladder, the gears, transmission shafts and the motors are arranged between each scaling ladder and the corresponding next-stage scaling ladder, racks are fixedly arranged on the scaling ladders, and the second-stage scaling ladder is in telescopic movement with the first-stage scaling ladder through the gear rack transmission. According to the scaling ladder structure, the structure is novel, the working principle is clear, the angle, relative to the scaling ladder platform, of the first-stage scaling ladder is adjusted through the sliding groove in the bottom of the first-stage scaling ladder, thesliding block and the sliding rod, and relative movement between each stage of the scaling ladders and the corresponding next stage of the scaling ladders is formed through the gears, the motors, thetransmission shafts and the racks inside the scaling ladders, so that the fire-fighting operation efficiency is further improved.