A drilling machine including: a lower unit, an upper unit, a mast, a rotary, a drilling tool connected to a telescopic Kelly bar and a blocking system suitable for blocking the rotation of the upper unit relative to the lower unit. The blocking system includes: a cylinder revolvingly mounted on a frame of the lower unit, a plurality of vises mounted on the frame of the lower unit in such a way to block the cylinder integrally with the lower unit, and an actuator mounted in the upper unit to actuate a blocking pin that is engaged in a hole of a bushing of a flange that protrudes radially outwards from said cylinder in such a way to integrally block the cylinder to the upper unit.
Drilling machine with blocking system
2022-11-01
Patent
Elektronische Ressource
Englisch
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