Aluminum alloy fire-fighting extension ladder

Abstract

The invention relates to the technical field of firefighting equipment and discloses an aluminum alloy fire-fighting extension ladder. The aluminum alloy fire-fighting extension ladder comprises a bottom frame, wherein one side of the bottom frame is fixedly connected with one side of a bottom-layer ladder frame, the other side of the bottom-layer ladder frame is movably connected with one side ofa middle-layer ladder frame, the other side of the middle-layer ladder frame is fixedly connected with one side of an upper-layer ladder frame, and a sliding chute is formed in the bottom end of theother side of the middle-layer ladder frame. According to the aluminum alloy fire-fighting extension ladder, the bottoms of the middle-layer ladder frame and the upper-layer ladder frame are respectively movably connected with the other sides of two baffling blocks, so that a damping rod can rotate along a rotating pin, and the damping is finished by virtue of a spring; and when the connection between the upper-layer ladder frame and the middle-layer ladder frame as well as between the middle-layer ladder frame and the bottom-layer ladder frame malfunctions, the upper-layer ladder frame and the middle-layer ladder frame can be buffered during the down sliding, so that the problem that the body of a user is injured when the user slides in an overhigh speed along the extension ladder is avoided, and the safety of the extension ladder is improved.

Description

technical field [0001] The invention relates to the technical field of fire-fighting equipment, in particular to an aluminum alloy fire-fighting ladder. Background technique [0002] The special fire-fighting ladder is also called the fire-fighting ladder. It is a ladder used in the fire-fighting process. The general fire-fighting ladder is composed of three ladders. With the help of lifting hooks, pulleys and pull ropes, the ladder can be lifted freely. The connection between the step bar and the straight bar is adopted. The special riveting process can meet the usual elongation and shortening at the same time, and it is more convenient to use and carry. However, when there is a problem with the connection between the general fire ladder and the ladder frame, it can buffer the ladder frame during the downward process. It avoids personal injuries caused by falling down too fast with the ladder, and the instability of the bottom of the ladder leads to slipping and falling inj...

AI Technical Summary

Problems solved by technology

[0003] The invention provides an aluminum alloy fire-fighting ladder, which has the advantages of light weight, easy handling, simple operation, safety and high efficiency, and solves the problem that the ladder frame can be buffered in the process of sliding when there is a problem with the connection between the ladder frames , to avoid the problem of personal injury caused by falling too fast with the ladder and the instability of the bottom of the ladder leading to the problem of falling and falling

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