Working device with a working boom arranged on a rotary head
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United States of America Patent
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Oct 25, 2016
Grant Date -
Feb 18, 2016
app pub date -
Feb 27, 2014
filing date -
May 28, 2013
priority date (Note) -
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Abstract
A working device has a substructure for receiving a supporting device for ground support and an elongated working boom. The one end of the working boom is mounted on a rotary head bearing block, which projects beyond the substructure, in a pivotal manner about a horizontal axis. Furthermore, the rotary head is mounted on a rotary bearing of the substructure in a rotatable manner about a vertical axis by a radially projecting bearing ring. The bearing block and the bearing ring of the rotary head are rigidly connected to each other via a base plate provided with a central opening. The rotary head has an annular reinforcing structure which points away from the mounting plate in the direction of the substructure and is concentric about the bearing ring, the reinforcing structure compensating for the non-roundness of the support structure of the bearing block in the circumferential direction of the bearing ring.
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