US 11,988,051 B2
Control for a retainer of a transfer device for a rod section of a ground drilling device
Lucas Jostes, Finnentrop (DE); Andre Schnütgen, Lennestadt (DE); and Dieter Wurm, Kirchhundem (DE)
Assigned to TRACTO-TECHNIK GmbH & Co. KG, Lennestadt (DE)
Filed by TRACTO-TECHNIK GmbH & Co. KG, Lennestadt (DE)
Filed on Jul. 26, 2022, as Appl. No. 17/873,272.
Prior Publication US 2023/0091417 A1, Mar. 23, 2023
Int. Cl. E21B 19/15 (2006.01); E21B 19/087 (2006.01); E21B 19/14 (2006.01); E21B 19/20 (2006.01)
CPC E21B 19/087 (2013.01) [E21B 19/14 (2013.01); E21B 19/15 (2013.01); E21B 19/20 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A control for at least one retainer of a transfer device for a rod section of a ground drilling device, wherein the control is configured to control the ground drilling device for moving a drill string, and the transfer device is configured for transferring the received rod section from a position in a rod magazine to a position on the drill string or vice versa, and the control is configured to move the at least one retainer between a position above the rod magazine and the position on the drill string while the drill string is still moving, wherein a storage for the rod section is provided on the travel path between the position above the rod magazine and the position on the drill string, and wherein the transfer device is configured to place the rod section on the storage and to pick up the rod section from the storage.