| 摘要 |
In a dredge pump having a pump housing and an impeller in the housing, an impeller shaft projects through and beyond the housing in both directions. Two drive motors, one coupled rigidly to one end of the shaft and the other, to the other end, to drive the shaft, hence the impeller, are mounted on supports. The supports are mounted on pads made up of a pair of plates with an elastomeric block sandwiched between and bonded to them, by being connected to one of the plates of each pad. The other of the pad plates is mounted or secured to a fixed structure located with respect to the pads and impeller so that axial forces from the impeller shaft tending to put one set of pads in tension are countered by axial forces tending to put the other set of pads in compression. The pads permit substantial torsional movement, and provide compensation for slight misalignment of the drive motors, permitting the rigid coupling of the drive motors to the two ends of the impeller shaft.
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