Craftsman arm ladder

摘要

Craftsman arm ladder is started The functional arm ladder according to an embodiment of the present invention A folding stacking plate that can raise and lower the C-beam groove of the body and With the function of utilizing the tensile force of the tension spring and the pressure shock absorber for the rise and fall of the folding stacking plate, the foldable stacking box can be raised and lowered with little arm force of the user, while the transmission and position change pipes and hook plates and safety handles that improve the tensile force. It is composed of fields, connectors and buffer springs, Provides convenience by contributing to the safety of the user's work at high places