| 摘要 |
<p>A machine is provided for grinding concrete floors and the like, particularly for rough finishing and rough grinding of concrete floors, such work requiring high grinding capacity. To deal with the problem of the high torque generated by the grinding tools, a torque which with conventional machines has to be absorbed by the operator, the machine is equipped with at least three wheels which, when grinding is carried out, are designed to rest on the underlying surface and to be loaded by such an amount that the frictional force between the wheels and the underlying surface at right angles to the plane of the wheels exceeds the torque. Since the chassis wheels support the machine, the grinding tools can be arranged to move freely in a vertical direction relative to the chassis. The load on the grinding tools can thereby be varied, allowing one and the same machine to be used for different types of grinding work merely by changing the grinding tool and adjusting the application pressure of the tools on the underlying surface.</p> |
