Compaction head of a production machine for reinforced concrete

Details Compaction head of a production machine for reinforced concrete Compaction head of a production machine for reinforced concrete

1996-01-03

1997-04-01

Nguyen, Khanh P.

Plastic article or earthenware shaping or treating: apparatus

Means withdrawing trowel type shaping member from within...

425427, 425456, 425457, 425469, 264312, B28B 2112, B28B 2124

Patent

active

056163517

ABSTRACT:
A compaction head of a production machine for reinforced concrete pipes has a smoothing cylinder, non-rotatably mounted on its drive shaft, for smoothing the inside of the concrete mixture that has been filled into a vertical mold. On a covering wall of the smoothing cylinder, the rolls, for the radial compaction of a concrete mixture, are mounted axis-parallel and orbiting on a circular path around and driven by the drive shaft at a specified orbiting speed about the axis of the drive shaft and about their own axis, such that the direction of rotation of each of the rolls about its own axis is opposite to that of the covering wall also driven by the drive shaft. To prevent the concrete from being pushed along in front of the rolls during the compaction, and to assure that the concrete is compacted, without thrust, outward in the radial direction, so that the steel wires of the reinforcing cage are completely covered by concrete and that no stresses occur between the cage and the concrete, with corresponding cracks in the interior of the concrete, provision is made that the covering wall of the smoothing cylinder is mounted separately on the drive shaft so that it can rotate relative to the latter, and the rolls are driven by the drive shaft via a transmission, whose transmission ratio is chosen so that the circumferential speed of the rolls is at least the same as their orbiting speed.

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Bertonwerk + Fertigteil-Technik, 1985, vol. 9, pp. 592-593.

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