阅读说明：本技术 一种捞渣加钻进复合式钻头 (Drag for sediment and add and bore combined type drill bit ) 是由 王怀营 于 2020-06-19 设计创作，主要内容包括：本发明公开了一种捞渣加钻进复合式钻头,包括方套,所述方套底部焊接有筒体,所述筒体与方套之间设有排渣开关,所述筒体底部连接有钻进下圈,所述钻进下圈内部安装有捞渣门板,所述捞渣门板外边缘与钻进下圈内壁紧密贴合,所述钻进下圈顶部固定焊接有密封板,所述捞渣门板通过导向四分头与密封板同轴连接。本发明通过钻进下圈与捞渣门板和密封板合理结合,在作业时,钻进下圈先接触施工面进行取芯,可全截面切入地层,从而可以为后接触施工面的捞渣门板做先导扶正,避免出现斜孔、偏孔问题的作用,能使捞渣门板更顺利的把渣料捞进筒体,不需更换钻具捞渣,从而一次性成孔提升施工效率,从而节省施工成本。(The invention discloses a slag salvaging and drilling combined type drill bit which comprises a square sleeve, wherein a barrel is welded at the bottom of the square sleeve, a slag discharge switch is arranged between the barrel and the square sleeve, the bottom of the barrel is connected with a drilling lower ring, a slag salvaging door plate is arranged in the drilling lower ring, the outer edge of the slag salvaging door plate is tightly attached to the inner wall of the drilling lower ring, a sealing plate is fixedly welded at the top of the drilling lower ring, and the slag salvaging door plate is coaxially connected with the sealing plate through a guide quartet. According to the invention, the drilling lower ring, the slag salvaging door plate and the sealing plate are reasonably combined, when in operation, the drilling lower ring firstly contacts the construction surface for coring, and the whole cross section can be cut into the stratum, so that the slag salvaging door plate which is contacted with the construction surface later can be subjected to pilot centralization, the problems of inclined holes and deviated holes are avoided, the slag salvaging door plate can smoothly salvage slag into the barrel, the slag salvaging tool does not need to be replaced, the one-time hole forming is realized, the construction efficiency is improved, and the construction cost is saved.)

1. The utility model provides a drag for sediment and add combined type drill bit that drills, includes square sleeve (1), square sleeve (1) bottom welding has barrel (2), be equipped with between barrel (2) and square sleeve (1) and arrange sediment switch (3), barrel (2) bottom is connected with and drills down circle (4), circle (4) internally mounted has and drags for sediment door plant (5) under the drilling, drag for sediment door plant (5) outward flange and creep into down circle (4) inner wall and closely laminate, circle (4) top fixed welding has closing plate (6) under the drilling, drag for sediment door plant (5) through direction quartering (7) and closing plate (6) coaxial coupling.

2. The drag for sediment and add brill combined type drill bit of claim 1, characterized in that: the slag salvaging door plate (5) is splayed, the center of the slag salvaging door plate is provided with a shaft hole, and two symmetrical sides of the slag salvaging door plate (5) are respectively provided with two inclined buckles (8) and two rows of slag salvaging drill tooth seat plates (9).

3. The drag for sediment and add brill combined type drill bit of claim 1, characterized in that: two stop blocks (10) are symmetrically arranged on the edge of the inner side plate surface of the sealing plate (6), and a shaft hole is formed in the center of the sealing plate.

4. The drag for sediment and add brill combined type drill bit of claim 1, characterized in that: the diameter of the drilling lower ring (4) is the same as that of the cylinder body (2).

5. The drag for sediment and add brill combined type drill bit of claim 1, characterized in that: the slag salvaging door plate (5) can rotate between the guide four-branch head (7) and the sealing plate (6) through a rotating shaft.

Technical Field

The invention relates to the technical field of rotary drilling tools applied to the drilling construction process of a drilled pile, in particular to a slag dragging and drilling combined drill bit.

Background

The rotary drilling rig is a common device for drilling bored concrete piles, and is applicable to most soil layer pile foundations and various hole piles. However, in order to enable the rotary drilling rig to construct most soil layer pile foundations and various hole piles, the original rotary drilling rig needs to be designed according to various conditions.

Special hole pile-occlusive pile; the secant pile is a foundation pit support structure which forms mutual secant arrangement between piles, and has quite high requirements on the accuracy of pile position positioning and the verticality of the piles. In order to meet the construction requirements, the general construction methods of the construction method are mainly three:

the construction is carried out by using the full casing, but the construction mode can meet the construction requirement, but the cost is greatly improved;

only use traditional drag for the sediment and bore and carry out the pore-forming, but because the both sides hardness inequality in hole, will lead to appearing inclined hole, inclined hole scheduling problem to can not reach the construction requirement.

The core drill is firstly used for coring, and then the slag removing drill is used for removing slag, so that the construction requirement can be met, but the drilling tool is continuously replaced, and the construction efficiency is slowed down.

Constructing a half rock and a karst cave layer; under the conditions of half rocks and karst cave layers, because the geological soft and hard of the stratum per se are uneven, the rock surface is uneven, the gradient is large, the cracks are vertical and horizontal, and the geological conditions are complicated and changeable, the construction problems of drill rod inclination, inclined hole drilling, drill sticking, difficult rock entering of a full section and the like often occur in the construction process.

Constructing a cobblestone stratum; cobblestones are characterized by small size and hardness, and the existing cobblestone stratum construction is generally carried out by using the traditional slag salvaging drilling, but has a serious defect of easy deviation and inclined hole drilling.

Aiming at the construction difficulties of the prior occlusive piles, half rocks, karst caves and the like, a slag fishing and drilling combined type drill bit is provided, and the construction of special pile holes of the occlusive piles, the half rocks, the karst caves, cobblestone strata and the like can be completed with higher efficiency and success rate and lower cost.

Disclosure of Invention

The invention aims to provide a slag-dragging and drilling combined drill bit, which mainly solves the problem of difficult construction of the existing secant pile, half rock, karst cave and the like.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a drag for sediment and add combined type drill bit that drills, includes the square sheath, the welding of square sheath bottom has the barrel, be equipped with the sediment switch of arranging between barrel and the square sheath, the barrel bottom is connected with creeps into down the circle, it has the sediment door plant of dragging for to creep into down circle internally mounted, drag for sediment door plant outward flange and creep into down the inseparable laminating of circle inner wall, the fixed welding in circle top has the closing plate down in the drilling, drag for the sediment door plant through direction quartering and closing plate coaxial coupling.

Preferably, the slag salvaging door plate is splayed, a shaft hole is formed in the center of the slag salvaging door plate, and two inclined buckles and two rows of slag salvaging drill tooth seat plates are respectively arranged on two symmetrical sides of the slag salvaging door plate.

Preferably, two stop blocks are symmetrically arranged on the edge of the inner side plate surface of the sealing plate, and a shaft hole is formed in the center of the sealing plate.

Preferably, the downhole ring and the barrel are the same diameter.

Preferably, the slag dragging door plate can rotate between the guide quartering head and the sealing plate through a rotating shaft.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, the drilling lower ring, the slag salvaging door plate and the sealing plate are reasonably combined, when in operation, the drilling lower ring firstly contacts the construction surface for coring, and the whole cross section can be cut into the stratum, so that the slag salvaging door plate which is contacted with the construction surface later can be subjected to pilot centralization, the problems of inclined holes and deviated holes are avoided, the slag salvaging door plate can smoothly salvage slag into the barrel, the slag salvaging tool does not need to be replaced, the one-time hole forming is realized, the construction efficiency is improved, and the construction cost is saved.

Drawings

FIG. 1 is a schematic structural view of example 1 of the present invention;

FIG. 2 is a bottom schematic view of the drilling lower collar inner slag-removing door of embodiment 1 of the present invention when open;

FIG. 3 is a bottom schematic view of the closing of a slag removing door in the lower drilling circle in embodiment 1 of the present invention;

fig. 4 is a top schematic view of the closing of the slag removing door in the lower drilling circle in embodiment 1 of the invention.

In the figure: 1 square sleeve, 2 cylinder bodies, 3 slag discharging switches, 4 drilling lower rings, 5 slag salvaging door plates, 6 sealing plates, 7 guiding quartering heads, 8 oblique buckles, 9 slag salvaging drill tooth seat plates and 10 stop blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Embodiment 1, please refer to fig. 1-4, a drag for sediment and add compound drill bit that drills, including square jacket 1, the welding of square jacket 1 bottom has barrel 2, be equipped with row sediment switch 3 between barrel 2 and the square jacket 1, barrel 2 bottom is connected with creeps into circle 4 down, it has drags for sediment door plant 5 to creep into circle 4 internally mounted down, drag for sediment door plant 5 outward flange and creep into 4 inner walls of circle closely laminating down, drag for sediment door plant 5 and be the splayed form, the central point puts and opens the shaft hole, drag for sediment door plant 5's symmetry both sides and be provided with two oblique buckles 8 and two rows and drag for sediment drill tooth bedplate 9 respectively, it has closing plate 6 to creep into the fixed welding in circle 4 top down, closing plate 6 inboard face edge symmetry is provided with two dogs 10, the central point puts and opens the shaft hole, drag for sediment door plant 5 through direction quartering 7 and closing plate 6 coaxial coupling.

The working principle is as follows: through the reasonable combination of the drilling lower ring 4, the slag salvaging door plate 5 and the sealing plate 6, during operation, the drilling lower ring 4 firstly contacts the construction surface to take cores, and can cut into the stratum in a full section, thereby leading the slag salvaging door plate 5 which is contacted with the construction surface later to centralize, avoiding the problems of inclined holes and deviated holes, enabling the slag salvaging drilling tooth seat plate 9 to more smoothly salvage the slag into the barrel body 2, when the slag in the barrel is full, reversing the barrel body 2, utilizing the friction force of the slag and the slag salvaging door plate 5 to make the slag salvaging door plate 5 reverse to the slag salvaging drilling tooth seat plate 9 to abut against the stop dog 10, stopping when the slag salvaging door plate 5 is closed, completing the slag salvaging, pouring out the slag in the barrel body 2 through the slag discharging switch 3, when the slag is salvaging again, only needing to follow the drilling direction, stopping when the slag salvaging door plate 5 rotates to abut against the door plate stop dog 10 through the inclined buckle 8 through the friction force of the slag, opening the slag salvaging drilling tooth seat plate 5, pushing the slag into the barrel body 2 along the slag drilling direction, the slag is fished without replacing a drilling tool, so that the construction efficiency is improved by one-time pore-forming, and the construction cost is saved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.