| 摘要 |
The system has a castor (18) rotating freely and defining, with each of two rear driving wheels, stable support points on a surface (S1), and a lifting arm (13). The arm is adapted to be applied on a surface (S2) presenting height difference with respect to the surface (S1). The arm is equipped with a transfer line in order to transfer the center of gravity of an equipment from the surface (S1) to the surface (S2) and vice-versa. |
