Portable structure for ascending to and descending from inaccessible places with a self-supporting work platform

A portable structure for ascending to and descending from inaccessible places comprising a self-supporting work platform, said structure formed by three legs, at least one of which is a length of ladder, the legs converging at the top where the work platform is situated, wherein the three legs (3.1, 3.2, and 3.3), consisting of the support or the corresponding supports and the length of ladder or the corresponding lengths of ladder, are joined to the work platform (1), and each of the three legs (3.1, 3.2, and 3.3) is linked to the work platform (1) at at least two connection and bracing points, distanced from each another, with an angle mounting means for the corresponding leg (3.1, 3.2 or 3.3) being provided at at least one of the two connection points of each leg (3.1, 3.2, and 3.3) to prevent the legs (3.1, 3.2, and 3.3) from twisting and to establish a triangular distribution of forces;

• and the portable structure thus formed does not need a bracing structure in the middle area between the different legs (3.1, 3.2, and 3.3).