Variable-diameter pile drilling rig

• Main Author: ZHENG HONGCHUAN
• Format: Patent
• Language: Chinese; English
• Published: 14.03.2012
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model discloses a variable-diameter pile drilling rig comprising a tractor, a working platform, a portal frame and a hydraulic support. The working platform is provided with a hydraulic oil pump, a hoist, a hydraulic oil cylinder, an upright column and a hydraulic operating system. The portal frame is provided with a tray; the tray is provided with a well plate; the well plate is a speed adjusting motor through a conveyor belt; the hoist is connected with a first drill rod in the portal frame through a steel wire rope, a pulley and a pulley hook; the first drill rod is connected with a drill rod through a flange plate; the tail end of the drill rod is connected with a drill bit through a flange plate; the first drill rod is movably arranged in the middle of the well plate; the drill rod is also internally provided with a scraper control lever; the scraper control lever is connected with a bolt through support bases; a scraper is arranged between the support bases; and the scraper is fixedly connec