Tower type large-diameter deep well planet primary-secondary drill

Abstract

The invention discloses a tower type large-diameter deep well planet primary-secondary drill. A center drill (III) is arranged in the primary-secondary drill (I); the primary-secondary drill (I) drives a primary-secondary drill cylindrical base (9) by a gear (5) of a hydraulic motor (4) through a main gear (6), and the primary-secondary drill cylindrical base (9) drives a plurality of sub-drills (II) at the lower end of the primary-secondary drill (I) through the engagement of a planet gear (14) and an internal gear (13); the primary-secondary drill (I) is positioned in a sliding and rolling way by a three-way positioning backrest wheel set on the rear and a width-direction backrest wheel (8); the primary-secondary drill (I) is provided with an expansion mechanism (IV) consisting of an expansion ring (68), a jack (69) and a hook (70); and in the center drill (III), a hollow shaft (41) is connected with a spiral blade (42), the lower end of the center drill is provided with a conical pointed drill (39) which is enclosed by sections, while the upper end is provided with a plane bearing (60), a gear (61) is in mesh transmission with a gear (62) of the hydraulic motor (63), and the upper end is also provided with a sludge discharge mechanism V consisting of a sludge output wheel (56) and a sludge discharge disk (55). The invention has the advantages that: the tower type large-diameter deep well planet primary-secondary drill safely and efficiently drills large-diameter deep wells, performs comprehensive integrated construction of a plurality of procedures such as advancing andcrushing, sludge discharge and concrete pile foundation casting, and can prevent the well wall in soft soil from collapsing.

Description

Technical field: [0001] The invention relates to a multi-bit deep well drill, in particular to a tower-type large-diameter deep well planetary master drill. Background technique: [0002] At present, the existing large drill bits for deep wells at home and abroad are very backward and cannot keep up with the development of the situation. For small auger drilling rigs, the maximum drilling diameter cannot exceed 80 cm, and the depth cannot reach 30 meters. A rotary drilling rig produced in my country is the most advanced Advanced, it is like a large cup-shaped iron tank, with a retractable drive shaft installed at the bottom of the cup, but the drilling depth cannot exceed 60-70 meters, and the dregs filled with the iron tank must be lifted up the well every time it is drilled , until the ground is moved to remove the slag inside, it must be returned to the position and then stretched into the well to dig. The work efficiency is low, especially when drilling down, the driving f...

AI Technical Summary

Problems solved by technology

The other is manual construction, and the work efficiency will be slower. The piers of overpasses in cities and the piers and wells of houses are all dug manually. In this way, the construction workers are either buried by landslides, or are crushed to death or disabled by a small stone. , so it is very dangerous

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