Reamer bit structure of sand-bailing hopper for embedding rocks onto secant pile

A technology for reaming drill bits and occlusal piles, which is applied in drill bits, drilling equipment, earth-moving drilling and mining, etc., can solve the problem that the hole diameter of the steel casing can not reach the designed hole diameter, etc.
CN110295850AActive Publication Date: 2019-10-01SHENZHEN HONGYEJI GEOTECHNICAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENZHEN HONGYEJI GEOTECHNICAL TECH CO LTD
Publication Date
2019-10-01

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Abstract

The invention relates to the technical field of ground and foundation engineering and discloses a reamer bit structure of a sand-bailing hopper for embedding rocks onto a secant pile. The reamer bit structure comprises a bit body, wherein a base is arranged at the bottom of the bit, a plurality of hob structures are movably connected to the base for grinding the rocks, the bits with the hob structures are replaced to drill holes when hard rocks are available in drilling, the hob structures can grind the rocks and crush the rocks for drilling holes smoothly. Each hob structure comprises a rolling head for grinding the rocks, and a plurality of grinding sheets are arranged in a spaced manner on the surface of the rolling head; and when the bits rotate to drill holes, the hob structures rotate and the grinding sheets grind the rocks.
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Description

technical field

[0001] The patent of the present invention relates to the technical field of foundation and foundation engineering, in particular, it relates to a sand bucket reaming drill bit structure for occlusal pile rock-socketing. Background technique

[0002] The occlusal pile is partially embedded in the circumference of the adjacent concrete row piles, and a steel cage is placed in the piles that are constructed alternately in the subsequent sequence, so that it forms an overall continuous waterproof and soil-retaining enclosure structure with good anti-seepage effect; for For the construction of occlusal piles, most of the holes are drilled with full-length steel casings and rotary drilling rigs, that is, the steel casings are pressed into the formation by segmental rotation with a pipe rubbing machine or casing machine, and then the rotary drilling rigs are used to drill the holes in the steel casings. Internal drilling into piles; this process can be applied to m...

Claims

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