| 摘要 |
The invention relates to a dismountable hydraulic crane with rotary boom meant to handle loads, in a reduced space, by lifting and rotation displacement. According to the invention, the crane comprises a frame-carriage subassembly (), provided with a lower pyramidal support () which carries a column () whereon there is placed a pivoting arrangement support () which rests on the upper end of the column () by means of an axle bearing () and in the lateral lower part, by means of a roller system () ensuring the rolling on the column () and the pivoting of the arrangement support (), whereto there are articulated both a power hydraulic cylinder () and a guide (), a lifting boom () with the possibility to slide being positioned by means of a nail () at a determined value of the working radius in relation with the guide (), the arrangement support () having mounted, at the lower part, a support () which carries a pressure pump (), manually operated or driven by an electric motor or heat engine, and also a supporting orientable system () and some articulated tensional bars () ensuring the stability. |
