CN217206314U

CN217206314U - Drill bit for salvaging stone slag block

Info

Publication number: CN217206314U
Application number: CN202220860920.0U
Authority: CN
Inventors: 杨永臻; 陈福强; 葛玉华
Original assignee: CCCC First Harbor Engineering Co Ltd
Current assignee: CCCC First Harbor Engineering Co Ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-08-16
Anticipated expiration: 2032-04-14

Abstract

The utility model provides a drill bit for salvaging stone slag blocks. The drill bit for salvaging the stone slag block comprises a cylinder body, a bracket and a plurality of discharge holes. The cylinder body can rotate around the axis thereof; the discharge holes are arranged in the barrel at intervals and used for discharging the slurry in the barrel; the support is located in the cavity of the barrel body and arranged at the tail end of the barrel body, and is used for containing the slag blocks during drill lifting. Can salvage the stone sediment piece that meets in the drilling through this scheme, improve the pore-forming quality, guarantee the construction progress and the quality of drilling bored concrete pile.

Description

Drill bit for salvaging stone slag block

Technical Field

The utility model relates to a rig technical field especially relates to a drill bit for salvaging stone sediment piece.

Background

The bored pile is a pile made by drilling holes on site with a submersible drilling machine and pouring concrete, and has the advantages of no vibration and no soil squeezing during construction. When the cast-in-situ bored pile is manufactured aiming at different soils, different types of submersible drilling machines can be adopted for construction. The submersible drilling machine is generally suitable for geology such as cohesive soil, sandy soil, soil containing a small amount of gravels and pebbles (the content is less than 20 percent, and the particle size is smaller than the inner diameter 2/3 of a drill rod), soft rock, hard rock and the like.

When a submersible drilling machine is used for drilling in the above geology, the situation that the particle size of the slag block is larger than that of a drill rod of the submersible drilling machine or the slag block which is not easy to be sucked out by the drill rod can be met. If the stone slag block can not be timely removed, the drilling bit of the submersible drilling rig is easily caused to be blocked, so that the adsorption capacity of the drill rod is reduced, pore-forming is not facilitated, and the construction progress and quality of the cast-in-situ bored pile are finally influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drill bit for salvaging the slabstone piece can salvage the slabstone piece that meets in the drilling, improves the pore-forming quality, guarantees the construction progress and the quality of drilling bored concrete pile. The specific technical scheme is as follows:

the utility model provides a drill bit for salvaging stone sediment piece, include:

a barrel rotatable about its axis;

the discharge holes are arranged in the barrel at intervals and used for discharging the slurry in the barrel;

the bracket is positioned in the cavity of the cylinder body and is arranged at the tail end of the cylinder body; the support is of a frame structure and is used for containing the slag blocks during drill lifting.

In some embodiments of the present application, the support comprises a plurality of cantilevers; one end of the cantilever is fixedly connected with the inner wall of the cylinder body, and the other end of the cantilever is a free end; the free end intersects the axis of the barrel;

the cantilevers are radially arranged around the axis of the cylinder body.

In some embodiments of the present application, a plurality of the cantilevers are helically wound around the axis of the cylinder.

In some embodiments of the present application, the cantilever is a flexure.

In some embodiments of the present application, the distal end of the barrel is provided with a plurality of projections extending along the axis of the barrel.

In some embodiments of the present application, the protrusion is shaped as a tooth.

In some embodiments of the present application, the number of the discharge holes is four, and the discharge holes are uniformly distributed along the circumference of the cylinder.

In some embodiments of the present application, the maximum distance between two adjacent cantilevers is 200 mm.

In some embodiments of the present application, the flexure has a diameter of no less than 50mm, and/or

The diameter of the discharge hole is 100-150 mm, and/or

The wall thickness of the cylinder is 8-10 mm.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for describing the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other embodiments without creative efforts.

FIG. 1 is a schematic structural view of a drill bit for fishing a rock ballast block according to the present invention;

FIG. 2 is a schematic view of another perspective of the drill bit of FIG. 1 for fishing a ballast block.

The reference numerals in the drawings are explained as follows:

1-cylinder, 11-discharge hole, 12-projection; 2-bracket, 21-cantilever.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the description herein are intended to be within the scope of the present disclosure.

The cast-in-situ bored pile is a pile manufactured by drilling a pile hole by using a submersible drilling machine and pouring concrete in the hole (or firstly hoisting a reinforcement cage in the hole and then pouring the concrete). The cast-in-situ bored pile has higher safety and higher stability, namely concrete slurry permeates to the deep part of a soil layer, so that the soil layer and the cast-in-situ bored pile body can be tightly combined, the foundation is firmer and more reliable, and meanwhile, the cast-in-situ bored pile can effectively control the settlement of the foundation, thereby generating a compaction effect on the soil layer; and the bored concrete pile plays better infiltration, compaction and splitting effect to the soil layer, and the interaction between the three enables the soil layer more firm. Therefore, the cast-in-situ bored pile construction technology has been widely applied to the field of construction engineering.

The submersible drilling machine is suitable for cohesive soil, sandy soil, silt, mucky soil and the like, and is particularly suitable for forming holes in soil layers with higher underground water level. In order to prevent the hole from collapsing during drilling, mud protective walls can be adopted. Drilling in clay with clear water to form mud to protect wall; and injecting the prepared slurry into sandy soil for drilling. And circularly removing drilled soil scraps by using slurry, and cleaning the hole after the hole is drilled to the required depth to remove the soil scraps sinking at the bottom of the hole, so that the settling amount of the pile is reduced. The large-diameter cast-in-situ bored pile popularized and applied in large-scale projects such as high-rise buildings, bridges and the like is constructed by the method, the diameter of the pile is more than 1m, the bottom of the pile can be reamed, and the bearing capacity of a single pile can reach thousands of tons.

The diving drilling machine is divided into a positive circulation drilling machine and a reverse circulation drilling machine. The positive circulation drilling machine is characterized in that flushing liquid is conveyed into the bottom of a hole through a drill rod by a slurry pump and then returns to the ground from the bottom of the hole from the inside of the hole; the flushing liquid of the reverse circulation drilling machine is just opposite to the route of the positive circulation.

This application is exactly to the dive drill rig preparation drilling bored concrete pile in-process, and remaining slabstone piece influences the pore-forming quality in the drilling, and then influences the problem of drilling bored concrete pile construction progress and quality, provides a drill bit for salvaging the slabstone piece. The drill bit for salvaging the stone slag blocks, provided by the embodiment of the application, can salvage the stone slag blocks encountered in the drilling and pouring construction process, improves the pore-forming quality, and ensures the construction progress and quality of the cast-in-situ bored pile. The following will explain in detail a drill bit for fishing a rock ballast lump provided by the present application with reference to the accompanying drawings.

As shown in fig. 1 and 2, the embodiment of the present application provides a drill bit for fishing a rock ballast block, which includes a cylinder 1, a support 2, and a plurality of discharge holes 11.

The cylinder 1 is rotatable about its axis.

The discharge holes 11 are arranged at intervals in the cylinder 1 and used for discharging the slurry in the cylinder 1.

The bracket 2 is positioned in the cavity of the cylinder 1 and is arranged at the tail end of the cylinder 1; the support 2 is of a frame structure and is used for containing the slag blocks during drill lifting.

It should be noted that the structure of the bracket 2 in the embodiment of the present application may be various, and may be, for example, a fence structure, a grid structure, a fence structure, or the like.

According to the scheme provided by the embodiment of the application, the support 2 of the frame structure is arranged at the tail end of the cylinder 1 of the drill bit for fishing the rock ballast blocks, and the support 2 is located in the cavity of the cylinder 1. When the cylinder 1 rotates around the axis and feeds towards the bottom of the drill hole, the beams or columns in the support 2 of the frame structure contact with the rock ballast mass in the drill hole and apply an acting force to the rock ballast mass, and the reaction force of the rock ballast mass to the support 2 causes the gap between the beams or columns in the support 2 to be enlarged, so that the rock ballast mass enters the upper part of the support 2 through the gap. Subsequently, during the lifting of the drill, the mud entering the cavity of the barrel 1 flows out through the discharge hole 11, the ballast mass remaining in the drill bit. Therefore, the stone slag blocks encountered in drilling can be salvaged through the scheme, the pore-forming quality is improved, and the construction progress and quality of the cast-in-situ bored pile are guaranteed.

In some embodiments of the present application, the support 2 comprises a plurality of cantilevers 21; one end of the cantilever 21 is fixedly connected with the inner wall of the cylinder 1, and the other end is a free end; the free end is intersected with the axis of the cylinder body 1;

a plurality of cantilevers 21 are radially arranged around the axis of the cylinder 1.

In this application embodiment, link firmly through the inner wall of cantilever 21 one end and barrel 1, the axis of free end and barrel 1 is crossing and a plurality of cantilevers 21 are radial, form frame construction. The space between the cantilevers 21 is used to allow the ballast mass to enter above the holder 2, so that the ballast mass encountered in the drilling is fished out.

In some embodiments of the present application, the plurality of cantilevers 21 helically surround the axis of the barrel 1.

In this application embodiment, make a plurality of cantilevers 21 be the heliciform, can make the more smooth entering support 2 tops of stone ballast piece through the spiral transition, more be favorable to fishing out the stone ballast piece that meets in the drilling.

In some embodiments of the present application, the cantilever 21 is a flexure.

In the embodiment of the present application, the flexible member may be a steel wire rope, a spring, or the like. The flexible parts such as the steel wire rope, the spring and the like are made of elastic soft materials, and the flexible parts cannot damage the bottom of the drilled hole in the rotating process of the cylinder body 1.

In some embodiments of the present application, the distal end of the barrel 1 is provided with a plurality of projections 12 extending along the axis of the barrel 1.

In the embodiment of the application, the protruding part 12 is arranged at the tail end Shenzhen of the barrel body 1, so that the barrel body 1 can feed a distance to the bottom of the drill hole (but does not drill into the drill hole), and more slag blocks at the bottom of the drill hole can be salvaged as far as possible.

In some embodiments of the present application, the shape of the projections 12 is a tooth shape.

In the embodiment of the application, the protruding part 12 with the tooth-shaped structure is arranged, so that the end part of the cylinder 1 is sharper, and the distance from the cylinder 1 to the bottom of a drilled hole is facilitated

In some embodiments of the present application, the number of discharge openings 11 is four, evenly distributed along the circumference of the cylinder 1.

It is understood that the number of the discharge holes 11 may be six, eight, etc., and may be determined according to actual conditions in practical applications.

In some embodiments of the present application, the maximum distance between two adjacent cantilevers 21 is 200 mm.

It should be noted that the size of the particle size of the rock ballast block encountered by the submersible drilling machine during drilling is usually less than 150mm, and the embodiment of the present application sets the maximum distance between two adjacent cantilevers 21 to 200mm, which can be suitable for fishing most of the rock ballast blocks.

The diameter of the discharge opening 11 is 100-150 mm, and/or

The wall thickness of the cylinder body 1 is 8-10 mm.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above are merely preferred embodiments of the present application, and are not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A drill bit for fishing a rock ballast block, comprising:

the cylinder body (1), the said cylinder body (1) can rotate around its axis;

the discharge holes (11) are arranged in the barrel body (1) at intervals and used for discharging the slurry in the barrel body (1);

the support (2) is positioned in the cavity of the cylinder body (1) and arranged at the tail end of the cylinder body (1); the support (2) is of a frame structure and is used for containing the slag blocks during drill lifting.

2. Drill bit for fishing of rock ballast blocks according to claim 1, characterized in that the bracket (2) comprises a plurality of cantilevers (21); one end of the cantilever (21) is fixedly connected with the inner wall of the cylinder body (1), and the other end of the cantilever is a free end; the free end intersects the axis of the cylinder (1);

the cantilevers (21) are radially arranged around the axis of the cylinder body (1).

3. A drill bit for fishing stone chunks as claimed in claim 2, wherein the plurality of cantilevers (21) helically encircle the axis of the barrel (1).

4. A drill bit for fishing through rock ballast lump as claimed in claim 3, characterized in that the cantilever (21) is a flexible piece.

5. Drill bit for fishing stone blocks according to claim 1, characterized in that the distal end of the barrel (1) is provided with a plurality of projections (12) extending along the axis of the barrel (1).

6. Drill bit for fishing of rock ballast blocks according to claim 5, characterized in that the shape of the protrusion (12) is toothed.

7. Drill bit for fishing stone blocks according to claim 1, characterized in that the discharge holes (11) are four in number, evenly distributed along the circumference of the barrel (1).

8. Drill bit for fishing through pieces of rock slag according to claim 2, characterized in that the maximum distance between two adjacent cantilevers (21) is 200 mm.

9. A drill bit for fishing out of rock ballast lump as claimed in claim 4, wherein the diameter of the flexible member is not less than 50mm, and/or

The diameter of the discharge hole (11) is 100-150 mm, and/or

The wall thickness of the cylinder body (1) is 8-10 mm.