The utility model relates to a road-building machines, in particular to earth-moving machines such as an excavator, and is intended to enable the pipeline obkapyvaniya on both sides, without moving the excavator, and improvements pipeline repair technology by creating special machines passages pipeline for repair. Said technical result is achieved by the proposed mobile upper rotary excavator platform consisting of a boom, arm, bucket, arm cylinder, the lower movable platform, the lower movable platform is designed as a carriage with rollers, which moves two hydraulic cylinders for the guide beam exercising wherein the upper rotary excavator control platform located at the bottom of the mobile platform.
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