Portable climbing ladder with force-bearing composite cavity for electric power overhaul

The utility model belongs to the technical field of ladders, and particularly relates to a portable climbing ladder with a composite cavity bearing force for electric power overhaul, which comprises afirst ladder body, a second ladder body is slidably connected to the center of the top of an inner cavity of the first ladder body, and a third ladder body is slidably connected to the center of theinner cavity of the second ladder body. A fourth ladder body is connected to the center of an inner cavity of the third ladder body in a sliding mode, and a clamping mechanism is arranged in an innercavity of the groove. Through the cooperative use of the mounting block, the threaded rod, the handle and the pressing block, a user can quickly balance the portable climbing ladder for bearing forcein the composite cavity when encountering the ground with large height difference, the situation that the user has to continuously move the portable climbing ladder for bearing force in the compositecavity is avoided, and the us