Rizhao Hongzhou Rubber and Plastic Hardware has obtained a patent for a telescopic firefighting ladder, which is easy to operate, has a fast extension speed, and is relatively lightweight.

Rizhao Hongzhou Rubber and Plastic Hardware has obtained a patent for a telescopic firefighting ladder, which is easy to operate, has a fast extension speed, and is relatively lightweight.

The patent abstract indicates that this utility model relates to the field of firefighting equipment technology, specifically a telescopic firefighting ladder. It includes a main ladder frame and an auxiliary ladder frame, with the sides of the auxiliary ladder frame slidably connected to the interior of the main ladder frame via guide rails. The surface of the top rung of the main ladder frame is rotatably connected to a pulley through a sleeve ring. The inner bottom surface of the auxiliary ladder frame is fixedly connected to a rope through a hook ring, with one end of the rope passing through the pulley and extending to the front of the main ladder frame. Both sides of the auxiliary ladder frame are fixedly connected with positioning teeth, and both inner side walls of the main ladder frame are provided with grooves for the positioning teeth to slide. The inner bottom wall of the main ladder frame is provided with a transmission groove that penetrates into the interior of the two grooves.

In this utility model, by pulling the rope to move the auxiliary ladder frame upward inside the main ladder frame, the L-shaped positioning plate is pushed under the action of the first spring, causing its toothed groove to engage with the positioning teeth on the surface of the auxiliary ladder frame, thereby fixing the auxiliary ladder frame and achieving the purpose of extending the ladder. The operation is simple, the extension speed is fast, and the ladder is relatively lightweight.