Invention Grant
US08118370B2 Milling head and method for machining pile heads 有权
铣头和加工桩头的方法

Milling head and method for machining pile heads
Abstract:
The milling head which serves for the machining of the head of a pile consisting of a pile core, a pile shaft and a metal reinforcement lying therebetween comprises a coupling device that can be connected to a drive shaft and a plurality of picks that are used to remove concrete. According to the invention a central milling cutter provided with a plurality of central picks and an annular milling cutter provided with a plurality of annular picks are fixedly coupled with each other and arranged coaxially with the longitudinal axis of the drive shaft. The central picks are arranged within a central circular ring and the annular picks, separated by a middle circular ring, are arranged in an outer circular ring whereby the circular rings lie at least approximately perpendicular to and concentric with the longitudinal axis of the drive shaft. It is possible with the method according to the invention and the milling head to remove the pile core and the pile shaft simultaneously without the reinforcement of the pile lying in the middle circle being damaged.
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