| 摘要 |
The invention relates to an actuated shovel for a loading-lowering machine. A shovel 1 is articulated to a boom 3 of a loading-lowering machine, the bottom cutting edge of which shovel is actuated by at least three percussive tools 21 to 25 of percussive devices 18, arranged side by side. One 21 of the percussive tools, located in the middle, extends forward beyond neighbouring percussive tools 22, 23, while the other percussive tools 22 to 25, apart from the middle one 21, can be arranged with an offset which increases in the outward direction relative to the central percussive tool 21, so that overall an arrow-shaped bottom cutting edge is obtained. The neighbouring percussive tools 21 to 25 are separated by a very small lateral distance 39. <IMAGE>
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