Improvements in the patent 9301380, for 'universal equipment for execution of prebovedas and complementary treatments in underground excavations'.

摘要

Improvements in invention patent 9301380, by universal for executing prebóvedas and complementary treatments in underground excavation equipment. The equipment according to the improvements includes a general frame (1) in an arc supported by longitudinal beams (2) associated with adjustable support elements (4). On the gantry (1) two sets of cars (5) with respective drilling heads (9) mounted on masts (8) move, running joint (5) on each of the halves of the frame (1). The equipment includes an auxiliary frame (10) with an oscillating support (11) for supporting and guiding the mast (8), further comprising a translation system consisting of two track units (29) fixed to the own longitudinal beams (2) . The equipment also includes two oleo-dynamic power units for driving, mounted on the same longitudinal beams (2). Figure 1.