US 5,456,590 AGranted

Counter-rotating compaction head for manufacturing concrete pipes

AssigneeEd. Zublin Aktiengesellschaft

InventorWolfgang Volmari

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Abstract

A counter-rotating compaction head for manufacturing a concrete pipe is vertically positioned in a vertical mold within the longitudinal axis of the mold so as to be rotatable about and axially slidable along the longitudinal axis of the mold. The counter-rotating compaction head has a distributing head with distributing devices for distributing concrete and a cylindrical mantle. A first drive shaft rotates the distributing head. A smoothing piston with a smoothing mantle is rotatably driven by a second drive shaft counter to the distributing head. At least one vibrator for compacting and smoothing an inner wall surface of the concrete pipe to be manufactured is operatively connected to at least one of the cylindrical mantle of the distributing head and the smoothing mantle of the first smoothing piston so as to vibrate the respective mantle.

Claims20

Dependent claims

A counter-rotating compaction head for manufacturing a concrete pipe in a vertically positioned mold, said counter-rotating compaction head vertically positioned within a longitudinal axis of the mold so as to be rotatable about and axially slidable along the longitudinal axis of the mold, said counter-rotating compaction head comprising:

a distributing head having distributing means for distributing concrete and a cylindrical mantle;
a first drive shaft for rotating said distributing head;
a first smoothing piston with a smoothing mantle;
a second drive shaft for rotating said first smoothing piston counter to said distributing head;
at least one vibrator for compacting and smoothing an inner wall surface of a concrete pipe, said vibrator operatively connected to at least one of said cylindrical mantle of said distributing head and said smoothing mantle of said first smoothing piston so as to vibrate at least one of said cylindrical mantle of said distributing head and said smoothing mantle of said first smoothing piston;
a vibration damping mount for protecting said distributing means from vibrations;
and
wherein said distributing head comprises a base plate having connected thereto said distributing means and said cylindrical mantle comprises an inner wall surface with an abutment for receiving said vibration damping mount, wherein said base plate rests on said vibration damping mount.

5 more elements

a distributing head having distributing means for distributing concrete and a cylindrical mantle;
a first drive shaft for rotating said distributing head;
a first smoothing piston with a smoothing mantle;
a second drive shaft for rotating said first smoothing piston counter to said distributing head;
at least one vibrator for compacting and smoothing an inner wall surface of a concrete pipe, said vibrator operatively connected to at least one of said cylindrical mantle of said distributing head and said smoothing mantle of said first smoothing piston so as to vibrate at least one of said cylindrical mantle of said distributing head and said smoothing mantle of said first smoothing piston;
a vibration damping mount for protecting said distributing head from vibrations;
and
wherein said first smoothing piston comprises a piston base plate on which said distributing head is mounted and said smoothing mantle comprises an inner wall surface with an abutment for receiving said vibration damping mount, wherein said piston base plate rests on said vibration damping mount.

5 more elements

Dependencies are inferred from the claim text.