Using method of auxiliary ladder of steel tube tower

Abstract

The invention discloses an auxiliary ladder of a steel tube tower and a using method thereof, and relates to the field of a ladder. A flange plate is arranged at the end face of the steel tube tower; a plurality of bolt mounting holes which are evenly distributed are formed in the flange plate; a reinforcing rib is arranged at the lower part adjacent to the mounting holes; eyelets are arranged on the reinforcing rib; the auxiliary ladder comprises a movable rack and a supporting ladder; the movable rack comprises a pair of racks and at least one slide rail component; at least one pair of hooks is arranged on the tops of the racks; a pair of hooks is rotationally connected to the tops of the rack; the slide rail component is arranged between the pair of racks, so that the pair of racks is connected through the slide rail component in a sliding manner; the pair of racks is a rack 1 and a rack 2 respectively; the supporting ladder is fixedly connected to the end face of one side of the rack 1 far away from the rack 2. The auxiliary ladder has the characteristics of delicate structure, good stability, high strength and the like, and is convenient.

Description

technical field [0001] The invention relates to the field of ladders, in particular to the improvement of an auxiliary ladder for a steel pipe tower and a use method thereof. Background technique [0002] In order to facilitate the control of urban planning, the towers used for overhead lines in power facilities are usually built with steel pipe towers. During construction, considering factors such as the heavy weight of the steel pipe tower, the limitation of the terrain, and the short distance from the electrified side of the bypass, steel pipe towers assembled in sections by single poles or cranes are often used. The two adjacent steel pipe towers are connected by a flange structure, and are fixed to each other by a circle of evenly distributed bolts and nuts on the flange. However, when the staff climbed up the steel pipe tower to install the bolts and nuts, due to the large diameter of the steel pipe tower and the limited length of hands, the staff could not reach all ...

AI Technical Summary

Problems solved by technology

[0004] 1. In addition to the conventional vertical ladders, a pair of symmetrical auxiliary ladders are added outside the steel pipe tower, and the auxiliary ladders are fixedly connected to the outer wall of the steel pipe tower; such auxiliary ladders are easy to use and have high safety and reliability; however , there are also defects such as high construction cost, inability to use when overhauling the old steel pipe tower, and inability to reach all bolt installation positions if the diameter of the steel pipe tower is too large (more than 10 meters);

[0005] 2. The operator carries a ring-shaped safety rope to climb up the vertical ladder, and connects the top of the safety rope to the flange, so that the operator can step on the safety rope with one foot and the vertical ladder with the other to align the bolts during operation. However, this type of safety rope is only suitable for the installation of small-diameter steel pipe towers, and has poor stability and high safety risks during operation;

[0006] 3. Since reinforcing ribs are usually provided between the adjacent bolt holes on the flange, and eyelets are usually provided on the reinforcing ribs, the operator can carry an auxiliary ladder to climb up the steel pipe tower, and use iron wires to connect the auxiliary ladder to the steel pipe tower. It is connected under the eyelet, so that the operator can install the bolts by standing on the auxiliary ladder; however, the operator found in practice that this type of auxiliary ladder shakes a lot and is extremely inconvenient to move when working at heights, and it is difficult to use it to work. Extremely low efficiency and poor construction effect

[0007] Therefore, none of the above three construction methods can effectively solve the problem of providing effective support to the human body and conveniently and safely changing the position of the human body at high altitude.

In addition, in the above-mentioned several construction methods, the operator stands below to install the bolts above the head, which is time-consuming and laborious, and the bolts are easy to loosen after installation, which brings great safety hazards

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