Drilling machine of coaxial double-drill large-caliber multifunctional foundation pile

Abstract

The invention relates to a drilling machine of a coaxial double-drill large-caliber multifunctional foundation pile. The drilling machine is provided with a telescopic arm which is upwards upright, telescopic and foldable; the bottom end of the telescopic arm is articulated with a horizontal operating platform; the bottom of the operating platform is sequentially matched and connected with a large underpan and a rotary support through a traveling mechanism; the outer side of the telescopic arm is provided with a straight telescopic arm track; and the telescopic arm track is sequentially provided with a lifting power head slide support bracket assembled with a lifting power head mechanism, a vibratory hammer slide support bracket assembled with a vibratory hammer mechanism and a main powerhead slide support bracket assembled with a main power head mechanism from top to bottom. The invention has low construction energy consumption without pollution, easy pore-forming and consumable saving without worrying collapse, is especially suitable for the construction of a large-caliber and ultradeep pile hole and can multiply enhance the bearing capacity of an original foundation pile and enhance the work efficiency by 10-20 times.

Description

technical field [0001] The invention relates to a foundation pile drilling rig used in drilling, lifting, grouting, pile expansion, hole expansion, mud squeezing, and lowering of steel cages used in foundation pile engineering, especially a coaxial double-drill large-diameter multifunctional Pile drilling rig. Background technique [0002] At present, in the foundation pile engineering, the types of pile hole machinery are relatively single during construction, and the construction methods are relatively outdated and backward. During construction, it is often high energy consumption, high pollution, difficult to form holes and many consumable materials, especially large diameter Ultra-deep pile engineering is even more difficult to construct, and in addition to some special geological conditions, it is even more difficult to construct. At present, there are no ideal construction machinery and construction methods at home and abroad. Contents of the invention [0003] In o...

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Problems solved by technology

[0003] In order to solve the problems of single, obsolete and outdated construction methods in foundation pile engineering at home and abroad, the present invention provides a coaxial double-drill large-diameter multifunctional foundation pile drilling rig, which is more effective than the existing single drill bit The foundation pile and its construction method have made revolutionary changes, which can completely change some shortcomings of the existing foundation pile machinery. The construction energy consumption is low, no pollution, easy to form holes, saving more than 15% of consumables, and is not afraid of landslides. It is especially suitable for The construction of large-diameter and ultra-deep pile holes can increase the bearing capacity of the original foundation pile several times, and improve the work efficiency by 10-20 times

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