| 摘要 |
A concrete laying machine comprises a transversely disposed conforming plate which, as the machine advances, levels plastic concrete placed in advance of the machine, and vibratory means located forwardly of the conforming plate and operable to de-aerate and compact the concrete immediately prior to levelling, said vibratory means consisting of a series of laterally spaced angularly disposed plates carried by a pair of transverse members and an electric or hydraulic motor rigidly mounted on said members with its axis perpendicular thereto, the shaft of the motor carrying an eccentric weight such that upon rotation vibration is set up in the assembly. |
