| 摘要 |
<p>A motor vehicle bears a boom arm, swivelling at least in a plane parallel to its standing surface, with an end tool with all-round swivel, to tend banks, road verges, embankments, trenches and similar. The tool is able to swivel synchronously with the swivelling boom arm (1), but in the opposite direction. A chain drive gear (4) to swivel the tool (3) may be supported on the vehicle frame (2) and on the arm. One chain wheel may be non-rotatably connected to the frame, and another to the tool, with a chain linking them to each other. The first wheel's axle may be coaxial with the swivel axis (5a) of the block (5) bearing the arm.</p> |
