US 12,454,801 B2
Milling head for machining pile heads
Alois Portmann, Rain (CH)
Assigned to BRC ENGINEERING AG, Rain (CH)
Appl. No. 18/267,703
Filed by BRC ENGINEERING AG, Rain (CH)
PCT Filed Jan. 13, 2022, PCT No. PCT/EP2022/050637
§ 371(c)(1), (2) Date Jun. 15, 2023,
PCT Pub. No. WO2022/161782, PCT Pub. Date Aug. 4, 2022.
Claims priority of application No. 21154111 (EP), filed on Jan. 28, 2021.
Prior Publication US 2024/0018735 A1, Jan. 18, 2024
Int. Cl. E02D 5/64 (2006.01); E02D 9/00 (2006.01)
CPC E02D 5/64 (2013.01) [E02D 9/005 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A milling head having a rotation axis for machining a pile head of a pile that comprises a pile core, a pile jacket and a metal armouring interposed therebetween,
with a coupling device, which is connectable to a drive shaft of a driving device,
with a central milling cutter, which comprises a plurality of central chisels mounted on a lower side of an inner ring plate,
wherein the inner ring plate comprises at least one transfer opening leading from the lower side to an upper side of the inner ring plate, which the at least one transfer opening is adjoined on the lower side of the inner ring plate by at least one conveyor shovel projecting at least partially into a working area of the plurality of central chisels and which the at least one transfer opening is adjoined on the upper side of the inner ring plate by at least one conveyor spiral, and
wherein a central drill unit is arranged on the lower side of the inner ring plate, which is aligned coaxially to the rotation axis and projects beyond the plurality of central chisels and a plurality of ring chisels in a milling direction, and in that the at least one conveyor shovel is provided on the lower side of the inner ring plate, which the at least one conveyor shovel adjoins the central drill unit and is aligned radially with respect to the rotation axis.