| 摘要 |
<p>A unit for conveying a pressure medium, particularly oil under pressure, comprises electric motors (16, 19) with a vertical shaft (14) and a pump (25-27) actuable by said shaft, of which the casing is mounted at the lower portion (2) of an installation (1-3) casing. In order to attenuate the noise caused by the operation of the installation, the lower portion is configured as a body having an important mass and which vibrates very little, whereas the electric motor and its casing (7, 8) are secured to the lower portion. </p> |
