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Drill bit

A drill bit and drill shaft technology, which is applied in construction and other directions, can solve problems such as failure to form holes, unqualified pile quality, and unstable well hole walls, and achieve the effects of regular well holes and reduced weight

Inactive Publication Date: 2017-03-08
YICHANG CHAOYANG CONSTR ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a drill bit for compacting the soil layer in view of the above-mentioned deficiencies in the prior art, which can solve the problem of the existing drill bit in the construction of rotary drilling bored piles in high backfill areas. The wall of the wellbore is unstable, the hole cannot be formed, and even if the hole can be formed, the quality of the pile will be unqualified

Method used

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  • Drill bit

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Embodiment Construction

[0019] Such as figure 1 Shown, a kind of drill bit, it comprises the drill bit connection part 1 of upper end, the drill bit shaft part 2 of middle part and the drill bit tip part 3 of bottom end, is provided with connecting hole 4 on the drill bit connection part 1, and described drill bit tip part 3 is tapered structure, the outer wall of the drill tip 3 is provided with at least one first raised rib 5 longitudinally, the first raised rib 5 extends from the upper end of the drill tip 3 to the tip, and the outer wall of the first raised rib 5 is longitudinally provided with at least one 1 swivel head6.

[0020] A second raised edge 7 is provided on the outer wall of the drill shaft part 2 , and the second raised edge 7 is parallel to the central axis of the drill bit shaft part 2 .

[0021] The surface of the second protruding rib 7 is a plane or an arc surface.

[0022] The tip of the drill tip 3 is provided with at least two rotary heads, and the ends of the rotary heads ...

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Abstract

The invention relates to a drill bit which comprises a drill bit connecting part at the upper end, a drill bit shaft part on the middle part and a drill bit tip part at the bottom end, wherein a connecting hole is formed on the drill bit connecting part; the drill bit tip part has a conical structure; at least one first bulge edge is longitudinally arranged on an outer wall of the drill bit tip part; the first bulge edge extends to the tip part from the upper end of the drill bit tip part; at least one rotating head is longitudinally arranged on the outer wall of the first bulge edge. The drill bit can solve the problems of the present rotating drill bit that the well hole wall is unstable and cannot be drilled and the pile-forming quality is unqualified even if the hole is drilled in the rotary excavating bored pile construction in a high backfilling area.

Description

technical field [0001] The invention belongs to the field of engineering machinery, and in particular relates to a drill bit used for compacting soil layers. Background technique [0002] Rotary drilling is a construction technology suitable for hole-forming operations in building foundation engineering. Widely used in municipal construction, highway bridges, high-rise buildings and other foundation construction projects, with different drilling tools, it is suitable for dry (short helix), or wet (rotary bucket) and rock formation (core drill) hole-forming operations. [0003] The invention is mainly used in high backfill area, and the backfill is relatively loose sandy soil layer or clay layer for rotary digging hole forming operation. This kind topography and soil layer characteristic, use common rotary drilling bit on the existing market and can cause: 1, hole wall is unstable, collapses easily, can't form hole or form hole and can't reach relevant requirement. 2. Even ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/43
Inventor 陈开杰陈双庆黄光路
Owner YICHANG CHAOYANG CONSTR ENG CO LTD
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