CN217813304U

CN217813304U - Underground box culvert lead hole drill bit

Info

Publication number: CN217813304U
Application number: CN202220663753.0U
Authority: CN
Inventors: 李聪; 黄永富; 张计区; 廖正根; 孙佳; 黄昊旻; 王梓
Original assignee: Cccc Nanjing Construction Co ltd
Current assignee: Cccc Nanjing Construction Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-11-15
Anticipated expiration: 2032-03-25

Abstract

The utility model provides a hole drill bit is drawn to underground box culvert includes: the drill cylinder is connected with the drilling machine; and the roller bit is arranged on the periphery of the tail end of the drill cylinder and used for cutting off the steel bars. The underground box culvert hole-leading drill bit can avoid the drill bit from being wound by steel bars.

Description

Underground box culvert lead hole drill bit

Technical Field

The utility model relates to a drill bit particularly, relates to an underground box culvert draws hole drill bit.

Background

In the construction process of the cast-in-situ bored pile, the cast-in-situ bored pile often meets an underground box culvert (an obstacle), the conventional underground box culvert treatment method comprises the steps of carrying out slope excavation in a foundation pit, excavating the box culvert, removing and cleaning, and then backfilling to construct the bored pile, the method has large excavation backfill amount and long construction period, and the excavation depth needs to temporarily support a supporting structure; the box culvert top plate influencing the pile position range is broken through by local breaking, the box culvert top plate is manually arranged on a box culvert bottom plate, and then the bottom plate at the corresponding pile position is locally broken, so that the personnel need to arrange the box culvert to carry out water-carrying operation in an unknown way, and the method is unsafe and has a large number of uncertain factors; the method has the advantages that the punching drill is adopted to carry out the hole leading treatment on the box culvert at the pile position, and the box culvert is drilled after the top plate and the bottom plate of the box culvert are punched, so that the equipment is high in equipment advancing and retreating cost, the box culvert breaking range by violence is uncertain, and the safety risk is high; the drilling operation is carried out by adopting a rotary drilling conical drill bit with a broken rock, and the drill bit can be wound on the steel bar inside the box culvert concrete, so that equipment faults and safety accidents are caused.

Disclosure of Invention

The embodiment of the utility model provides an underground box culvert draws hole drill bit to solve the problem that inside reinforcing bar can twine the drill bit among the correlation technique at least.

According to the utility model discloses an underground box culvert draws hole drill bit for to drilling of underground box culvert, include:

the drill cylinder is connected with the drilling machine; and the roller bit is arranged on the periphery of the tail end of the drill cylinder and used for cutting off the steel bars.

Furthermore, the roller bit bodies are arranged in pairwise symmetry along the axis of the drill barrel.

Furthermore, the directions of the roller bit bodies are different, and the roller bit bodies facing the drill barrel axis and the roller bit bodies far away from the drill barrel axis are arranged in a staggered mode.

Furthermore, the number of the roller bit is 6, and the 6 roller bits are arranged at equal intervals.

Further, the barrel drill is arranged in a hollow mode, and the tail end of the barrel drill is of an opening structure.

Further, the drilling cylinder is a rotary drilling cylinder.

Further, the cone comprises a connecting piece, an arc-shaped part and a plurality of cutting teeth, the connecting piece is welded on the drill barrel, the connecting part is connected with the arc-shaped part, and the plurality of cutting teeth are distributed on the arc-shaped part.

Furthermore, the plurality of cutting teeth are distributed in the arc part in a multi-row mode, and one end of each row of cutting teeth is the top point of the arc part.

Has the advantages that: compared with the prior art, the utility model provides a conventional dig soon bore from taking the inside reinforcing bar of toper alloy drill bit to bore reinforced concrete in-process concrete can twine the drill bit and lead to the equipment to damage the problem that equipment topples even. When the drill barrel works, the annular area where the alloy roller bit at the bottom of the drill barrel works solves the problem that the acting force is concentrated when the drill bit is used for drilling, is beneficial to cutting and grinding off the reinforcing steel bars in the annular area, and cannot expose too long and wind the drill bit. .

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 is a schematic perspective view of an underground box culvert hole-guiding drill according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

a drill barrel 2 for connection to a drill; and a plurality of roller bit 1 arranged on the periphery of the tail end of the drill cylinder 2 and used for cutting off the steel bars.

Further, the roller bit 1 is arranged in a pairwise symmetrical mode along the axis of the drill barrel 2.

Further, the roller cone drill bits 1 are oriented differently, and are staggered towards the axis of the drill barrel 2 and away from the axis of the drill barrel 2.

Further, the number of the roller cone drill bits 1 is 6, and the 6 roller cone drill bits 1 are arranged at equal intervals.

Further, the barrel drill 2 is arranged in a hollow mode, and the tail end of the barrel drill is of an opening structure.

Further, the drilling cylinder 2 is a rotary drilling cylinder.

The rotary drilling barrel can be used for removing a drill bit sealing plate by adopting an old rotary drilling barrel drill. The hollow chamber is not sealed.

Further, the cone 1 comprises a connecting piece, an arc-shaped part and a plurality of cutting teeth, the connecting piece is welded on the drill cylinder, the connecting part is connected with the arc-shaped part, and the plurality of cutting teeth are distributed on the arc-shaped part.

The underground box culvert lead hole drill bit can be manufactured by the following method:

and (3) processing and manufacturing the drill cylinder body 2: only processing a drilling part of a drilling cylinder and a connecting piece of a drill bit drilling cylinder and a rotary drilling according to the size of the diameter of the drilled pile of 800mm, or removing a body of a reserved cylinder drilling cylinder from a bottom plate of a drilling cylinder by utilizing a waste rotary drilling cylinder with the same diameter;

and welding 6 alloy roller bit 1 at the bottom opening of the barrel drill at equal intervals, wherein the roller bits are arranged in a staggered and spaced mode in the inner direction and the outer direction. The size of the outer contour of the cone is controlled according to the diameter of the pile and the outer size of the pile casing.

The using method of the underground box culvert lead hole drill bit comprises the following steps:

and (3) mounting the underground box culvert lead hole drill bit on a rotary drilling rig (the rotary drilling rig adopts a model 360). And (4) moving the rotary drilling rig provided with the underground box culvert lead hole drill bit to a pile position needing to be processed. And (4) rechecking the pile position by measurement, and lowering a drill bit to drill. And (4) during drilling, maintaining constant-speed drilling, and judging whether drilling is performed or not if the drilling needs to be stopped in case of outburst or stagnation. And after drilling through the top plate, re-advancing the ruler to drill the bottom plate. And after the box culvert top plate and the box culvert bottom plate are drilled through, replacing a conventional drill bit for further drilling.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an underground box culvert draws hole drill bit for to drilling of underground box culvert, its characterized in that includes:

the drill barrel is connected with a drilling machine; the cone bits are arranged on the periphery of the tail end of the drill cylinder and used for cutting off the steel bars;

the roller bit is arranged along the axis of the drill cylinder in a pairwise symmetrical manner;

the roller bit is in different directions and is staggered towards the axis of the drill barrel and away from the axis of the drill barrel.

2. The underground box culvert lead hole drill bit of claim 1, wherein the number of the roller cone drill bits is 6, and the 6 roller cone drill bits are arranged at equal intervals.

3. The underground box culvert lead hole drill bit of claim 1, wherein the barrel drill is hollow and ends with an open structure.

4. The underground box culvert lead hole drill bit of claim 1, wherein the drill barrel is a rotary drilling barrel.

5. The underground box culvert lead hole drill bit of claim 1, wherein the roller cone comprises a connecting piece, an arc-shaped part and a plurality of cutting teeth, the connecting piece is welded on the drill barrel, the connecting piece is connected with the arc-shaped part, and the plurality of cutting teeth are distributed on the arc-shaped part.

6. The underground box culvert lead hole drill bit of claim 5, wherein a plurality of cutting teeth are arranged in a plurality of rows on the arc-shaped part, and one end of each row of cutting teeth is the peak of the arc-shaped part.