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MachLine de forare par rotticn et par louvciement La presente invention MachLine of forare by rotticn and louvciement The present invention.
In this type of drilling machines, the rotary table must be rigidly attached to the arrow to enable it to withstand the intense stresses to which it is subjected during drilling operations. The necessity of such a connection is however not satisfactory. L’existence d’une The existence of a. Such distance between the ablie e soel however has the disadvantage not only.
This set of provisions, avoiding the torque generated by the rotation of the kelly is transmitted to the arrow, allows deferred rollover efforts on the drilling axis and thus improves the functioning of the machine. OT 3p 3 netaz 3px.
Ces divers crganes elargissent bien entendu le domaine d’utilisat’: These various crganes expand course the field of USER ‘o. Lorsque la machine fonctionne par louvoiement, la fieche peu- When the machine works by tacking the fieche peu.
Il comporte par ailleurs d’une The frame 1 comprises a front frame 9 in the extension of the longitudinal ribs, said frame being constituted by uprights 10 connected by spacers 11 and is supported on the ground via pads 12 controlled by hydraulic cylinders It further comprises a.
The boom 3 is provided on its front face a bracket 23 for a im. En outre, le b surrorte interieurement un berceau 2t visible sur lez f igures 2 e. Opposite both dentc body 29 of the same protuberance. To achieve an inclined drilling, it is necessary to lock the protrusions 24 of the rotary table 7 in the guide channels 26 of the cradle 25 which has been previously disposed vertically, for controlling the actuators 38 to oal the cradle the desired inclination, and moving the carriage 4 on the frame 1 to its position shown in Figure i at its position shown in Figure 5 while it tilts the cradle cag the left.
The machine according to the present invention can also be used to devat by darting. The collar of maneuvering 40, whose axis is situated in the median longitudinal plane of the chassis 1, is located below the lower end of the guide channels 26 of the cradle 25 and can be locked on the tube 41 by hydraulic cylinders not shown.
It will specify simpiezen. As a measure of their penetration into the ground ie. Regarding le of maneuvering cylinders 42, they are interposed between the frame i and two lugs 45 which protrude from the collar sway. Quarnt the retaining col.