| 摘要 |
A mobile apparatus for driving different objects into the ground by impact, comprising a carrier structure supporting a swinging element along which slides a mass whose movements are controlled by a cable. The swinging element has a tubular structure divided longitudinally into two parts each comprising at least two surfaces for guiding two opposite zones of said mass so as to be able to provide alone longitudinal guiding of said mass and means for connecting these two parts together with free longitudinal sliding of one of the parts with respect to the other. |
