A rotary drilling rig and its hydraulic control system
A technology of hydraulic control system and rotary drilling rig, which is applied in the field of rotary drilling rig and hydraulic control system, which can solve problems affecting construction efficiency, drilling quality, and low precision, and achieve the effect of improving drilling efficiency and drilling quality
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[0029] The present invention aims at proposing a new type of hydraulic control system, which can realize the automatic alignment of the rotating drill rod and the center of the hole, thereby improving the drilling efficiency and drilling quality.
[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0031] Such as figure 2 As shown, the improvement of the hydraulic control system provided by the embodiment of the present invention is that the system includes a first proportional pressure reducing valve 1, a po...
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