Safety fire ladder

Abstract

The invention discloses a safety fire ladder, and relates to the technical field of fire ladders, the safety fire ladder comprises a fire ladder main support, a kick pedal support and a stay bar, the fire ladder main support comprises a main fixing support, a first ladder stand frame and a second ladder stand frame, and the side end of the first ladder stand frame is fixedly provided with an anti-clamping support guide mechanism; the second ladder stand frame is sleeved with a clamping groove of the anti-clamping type supporting and guiding mechanism, a supporting clamping groove base can limit the second ladder stand frame, the second ladder stand frame does not deviate when moving upwards in the supporting clamping groove base, friction between the outer end of the second ladder stand frame and the inner side of the first ladder stand frame does not occur, and therefore the ladder stand frame can stably work. Through the anti-clamping pulleys, the second ladder stand frame can move upwards more smoothly, and the phenomenon of clamping is avoided; the anti-winding sleeve seat can play a limiting role, so that the part, passing through the limiting type anti-winding assembly at the side end of each kick pedal support, of the pull rope and the transmission rope can slide in a proper range, and the phenomenon that the pull rope and the transmission rope are wound is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of fire-fighting ladders, in particular to a safety fire-fighting ladder. Background technique [0002] Fire ladder, also known as escape ladder, is a kind of building facility as an escape channel in the event of a fire. At present, there are more and more high-rise buildings in various shopping malls, residences and office buildings, and the application of fire ladders is also more and more extensive. Fire ladders in public places such as hotels have also become an indispensable item. When a fire occurs, in traditional ladders, firefighters need to carry fire hoses to board the fire ladder for fire fighting. CN211874363U discloses a new type of fire-fighting ladder, which has good firmness, convenient use, light weight and good safety. Since the lifting force is biased towards the kicking bracket, the pull rope can be easily pulled by the rotating wheel without causing the pull rope to break. However, the...

AI Technical Summary

Problems solved by technology

CN211874363U discloses a novel fire-fighting ladder, which has good firmness, convenient use, light weight and good safety. Because the pulling force is biased towards the kick bracket, the rotating wheel can easily pull the stay rope without causing breakage of the stay rope However, there are many problems during its use: since the second ladder is erected on the inner side of the upper end of the first ladder frame, the lower end of the transmission rope is connected with the pull rope, and the entire second ladder frame is pulled up to move upwards. During the lifting process, When the outer end of the second ladder frame slides relative to the first ladder frame, the fixation is not good, and the outer end of the second ladder frame and the inner side of the first ladder frame are prone to friction, which causes the second ladder frame to be stuck when it is pulled up, and it is used for a long time It is very easy to make the second ladder frame and the first ladder frame wear and tear, and the position of the transmission rope and the stay rope is offset. At the same time, when the stay rope and the drive rope are stretched to go up and down the ladder, the length of the drive rope and the stay rope is longer. The phenomenon that the rope head is entangled easily occurs at the higher part of the stretch, which affects the overall use; therefore, it is urgent for those skilled in the art to design a new type of safety fire ladder

Images