CN219061522U - Disposable drill bit and drill bit assembly for soil layer drilling - Google Patents
Disposable drill bit and drill bit assembly for soil layer drilling Download PDFInfo
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- CN219061522U CN219061522U CN202222198848.2U CN202222198848U CN219061522U CN 219061522 U CN219061522 U CN 219061522U CN 202222198848 U CN202222198848 U CN 202222198848U CN 219061522 U CN219061522 U CN 219061522U
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Abstract
According to the disposable drill bit for soil layer drilling and the drill bit assembly, the disposable drill bit for soil layer drilling comprises the drill bit main body obliquely arranged on the lower surface of the flange plate, so that soil blocks around the broken pipe pile can be quickly cut and broken when the pipe pile rotates, soil in the bottom area of the pipe pile is loosened, and the pipe pile can conveniently penetrate deep into a soil layer. The two side faces of the drill bit main body are respectively connected with the lower surface of the flange plate through the two reinforcing ribs, the reinforcing ribs are perpendicular to the lower surface of the flange plate, the connection strength between the drill bit main body and the flange plate can be improved, the drill bit main body cannot be broken easily, and the service life of the drill bit main body is effectively prolonged. The drill bit main body and the reinforcing ribs are steel sheets, and have higher mechanical strength. Therefore, the disposable drill bit and the drill bit assembly for soil layer drilling are applicable to the construction of self-drilling large-diameter pipe piles, can enable the pipe piles to sink into soil layers rapidly, are high in use efficiency, low in noise and convenient to operate, and have high popularization and application values.
Description
Technical Field
The utility model relates to the technical field of pipe pile driving, in particular to a disposable drill bit for soil layer drilling and a drill bit assembly.
Background
With the continuous development of the economy and the improvement of the social productivity in China, various newly built buildings are layered endlessly. The prestressed pipe pile is a common building material in the building construction process and plays an important role in various pile foundations and foundation treatment projects. There are various conventional pile sinking methods for prestressed pipe piles, including: hammer, hydrostatic, vibratory, water jet, pre-drilling, and medium-drilling, among which hammer and hydrostatic methods are most used. Because the diesel hammer vibrates severely and has high noise when piling, the technology of pressing the prestressed pipe pile by the large-tonnage static pile press is more widely applied to the construction of urban buildings in order to adapt to the construction requirements of urban areas. The maximum pile pressing force of the static pile pressing machine can reach 5000-6000kN, and the prestressed pipe pile with the diameter of 500mm and 600mm can be pressed to a bearing layer required by design. However, the static pile pressing method has some defects, the used machinery is heavy, the cost is high, the occupied area is large, and the requirements on the field size and the bearing capacity of the surface foundation are met.
Along with the influence of engineering construction environment and building types, the use of large-diameter pipe piles is becoming wider and wider. However, the pile sinking modes such as the traditional hammering method and the static pressure method are only suitable for common pipe piles with the diameter not exceeding 600mm, and the construction of the large-diameter pipe piles cannot be effectively completed due to the reasons of equipment body quantity, pile body strength, construction difficulty and the like. In order to meet the use requirement of large-diameter pipe piles, a pile sinking method of self-drilling of the pipe piles has appeared in recent years, and a drill bit is arranged at the bottom end of the pipe piles and is matched with a drilling machine to work so that the pipe piles drill into stratum in a rotating way. However, in this method, the conventional cutting pick, tooth, etc. are usually applied to the pipe pile as a drill bit, and the method is not designed in a targeted manner in combination with the use of the self-drilling pipe pile, so that the construction efficiency is low and the effect is not ideal.
Therefore, how to combine the use scene of the self-drilling tubular pile to carry out the targeted design to the drill bit for soil layer drilling so as to make the tubular pile construction more efficient is the problem that needs to be solved now.
Disclosure of Invention
The present utility model has been made to solve the above-mentioned problems, and an object of the present utility model is to provide a disposable drill for earth boring and a drill assembly.
The utility model provides a disposable drill bit for soil layer drilling, which is arranged at the bottom of a tubular pile through an annular flange plate and is characterized by comprising the following components: the drill bit body is sheet-shaped and is obliquely arranged on the lower surface of the flange plate; the two sides of the drill bit main body are respectively connected with the lower surface of the flange plate, wherein an included angle between the drill bit main body and the lower surface of the flange plate is 30-60 degrees, the reinforcing ribs are perpendicular to the lower surface of the flange plate, and the drill bit main body and the reinforcing ribs are steel sheets.
The disposable drill bit for soil layer drilling provided by the utility model can also have the following characteristics: the drill bit body is a rectangular blade and is obliquely downwards arranged, the length direction of the drill bit body is parallel to the radial direction of the flange, the reinforcing rib is perpendicular to the drill bit body, and the length direction of the reinforcing rib is parallel to the tangent line of the flange.
The disposable drill bit for soil layer drilling provided by the utility model can also have the following characteristics: wherein the included angle is 45 degrees.
The utility model provides a drill bit assembly, which is characterized by comprising: the flange plate is annular and is arranged at the bottom of the tubular pile, and the inner diameter and the outer diameter of the flange plate are equal to the inner diameter and the outer diameter of the tubular pile; and at least 3 pairs of disposable drill bits for soil layer drilling, wherein the disposable drill bits for soil layer drilling are the disposable drill bits for soil layer drilling.
The drill bit assembly provided by the utility model can also have the following characteristics: wherein, every pair of disposable drill bit for soil layer drilling is all along the diameter direction symmetry setting of ring flange in the bottom both sides of ring flange.
The drill bit assembly provided by the utility model can also have the following characteristics: wherein, 3 pairs of disposable drill bits for soil layer drilling are distributed at equal intervals along the circumference of the flange plate.
The drill bit assembly provided by the utility model can also have the following characteristics: wherein, the distance from the disposable drill bit for 3 pairs of soil layer drilling to the center of the flange plate increases gradually.
The drill bit assembly provided by the utility model can also have the following characteristics: wherein, the vertical distance from the outer side edge of the drill body of the pair of disposable drill bits for soil layer drilling near the outer side of the flange to the outer wall of the flange is equal to 20mm.
The drill bit assembly provided by the utility model can also have the following characteristics: wherein, the vertical distance from the inner side edge of the drill body of the pair of disposable drill bits for soil layer drilling near the inner side of the flange to the inner wall of the flange is equal to 20mm.
The drill bit assembly provided by the utility model can also have the following characteristics: the disposable drill bit for soil layer drilling is fixedly connected with the flange plate in a welding mode.
Effects and effects of the utility model
According to the disposable drill bit for soil layer drilling and the drill bit assembly, the drill bit assembly comprises the flange plate and at least 3 pairs of disposable drill bits for soil layer drilling, so that the pipe pile can quickly drill into soil layers under the action of the drilling machine.
The annular flange plate is arranged at the bottom of the pipe pile, the inner diameter and the outer diameter of the flange plate are equal to the inner diameter and the outer diameter of the pipe pile, the pile sinking speed can be prevented from being reduced or the pipe is prevented from being blocked due to the increase of the area of the bottom of the pipe pile, meanwhile, the flange plate can be prevented from interfering with other structures, and the normal construction procedure of the pipe pile is not influenced.
The disposable drill bit for soil layer drilling comprises a drill bit main body obliquely arranged on the lower surface of the flange plate, wherein an included angle between the drill bit main body and the lower surface of the flange plate is 30-60 degrees, and soil blocks around the broken pipe pile can be rapidly cut and broken when the pipe pile rotates, so that soil in the bottom area of the pipe pile is looser, and the pipe pile can penetrate deep into the soil layer conveniently.
The disposable drill bit for soil layer drilling further comprises at least two reinforcing ribs, wherein the two reinforcing ribs are respectively connected with the two side faces of the drill bit main body and the lower surface of the flange plate, and the reinforcing ribs are perpendicular to the lower surface of the flange plate, so that the connection strength between the drill bit main body and the flange plate can be improved, the drill bit main body cannot be broken easily, and the stability of the whole structure is improved. The drill bit main body and the reinforcing ribs are steel sheets, have higher mechanical strength, are easy to manufacture and have lower cost.
Therefore, the disposable drill bit for soil layer drilling can be suitable for the construction of self-drilling large-diameter pipe piles, can enable the pipe piles to sink into soil layers rapidly, is high in use efficiency, low in noise and convenient to operate, and has high popularization and application values.
Drawings
Fig. 1 is a bottom view of a drill bit assembly in an embodiment of the present utility model.
Detailed Description
In order to make the technical means, creation characteristics, achievement of the purposes and effects achieved by the present utility model easy to understand, the following embodiments specifically describe the disposable drill bit and the drill bit assembly for soil layer drilling according to the present utility model with reference to the accompanying drawings.
Fig. 1 is a bottom view of a drill bit assembly in an embodiment of the present utility model.
As shown in fig. 1, the drill bit assembly 100 of the present embodiment includes a flange 10 and at least 3 pairs of earth-boring disposable drill bits 20.
The flange plate 10 is annular, is fixedly connected with the bottom of the pipe pile through the steel bars poured in the pipe pile, and the inner diameter and the outer diameter of the flange plate 10 are equal to the inner diameter and the outer diameter of the pipe pile.
The soil layer drilling disposable drill 20 is disposed on the lower surface of the flange 10, and in this embodiment, the soil layer drilling disposable drill 20 is fixedly connected to the flange 10 by welding. The earth-boring disposable drill 20 includes a drill body 21 in the form of a sheet and at least two reinforcing ribs 22. The bit body 21 and the reinforcing ribs 22 of the present embodiment are each a high-strength steel sheet.
The bit body 21 is disposed obliquely downward on the lower surface of the flange 10. In the present embodiment, the bit body 21 is a rectangular blade, and the longitudinal direction of the bit body 21 is parallel to the radial direction of the flange 10. The angle between the side face of the bit body 21 and the lower surface of the flange 10 is 30 deg. to 60 deg., and in this embodiment, 45 deg. is used.
In the present embodiment, two reinforcing ribs 22 connect the two side surfaces of the bit body 21 and the lower surface of the flange, respectively. The reinforcing rib 22 is perpendicular to the lower surface of the flange 10, and at the same time, the reinforcing rib 22 is perpendicular to the bit body 21, and the length direction of the reinforcing rib 22 is parallel to the tangent line of the flange 10. The reinforcing rib 22 is welded to the bit body 21 and the flange 10.
In the present embodiment, the number of disposable drill bits 20 for earth boring is set to 3 pairs. Each pair of disposable drill bits 20 for soil layer drilling is symmetrically arranged at two sides of the bottom of the flange plate 10 along the diameter direction of the flange plate 10. The 3 pairs of disposable drill bits 20 for soil layer drilling are respectively a first drill bit 20a, a second drill bit 20b and a third drill bit 20c, and are sequentially distributed at equal intervals along the circumferential direction of the flange plate 10, and the distances from the 3 pairs of disposable drill bits 20 for soil layer drilling to the center of the flange plate 10 are sequentially increased. In the present embodiment, the spacing angle of the first drill bit 20a from the second drill bit 20b and the spacing angle of the second drill bit 20b from the third drill bit 20c are both 45 °.
A pair of earth-boring disposable drill bits near the inner side of the flange 10, i.e., the first drill bit 20a has a vertical distance from the inner edge of the bit body 21 to the inner wall 11 of the flange equal to 20mm. A pair of earth-boring disposable drill bits near the outer side of the flange 10, that is, the third drill bit 20c has a vertical distance from the outer edge of the bit body 21 to the flange outer wall 12 equal to 20mm.
During construction, the pipe pile rotates under the action of the drilling machine, the drill bit assembly 100 at the bottom of the pipe pile is driven to synchronously rotate, and 3 pairs of disposable drill bits 20 are used for quickly cutting and crushing surrounding soil blocks for soil layer drilling, so that soil in the bottom area of the pipe pile is looser, and the pipe pile is convenient to penetrate deep into a soil layer. After pile sinking is completed, the drill bit assembly 100 is buried in the soil layer along with the pipe pile, and is not taken out for use.
Effects and effects of the examples
According to the disposable drill bit for soil layer drilling and the drill bit assembly, the drill bit assembly comprises the flange plate and at least 3 pairs of disposable drill bits for soil layer drilling, and the disposable drill bits for soil layer drilling are arranged at the bottom of the pipe pile through the annular flange plate, so that the pipe pile can be quickly drilled into a soil layer under the action of the drilling machine.
The annular flange plate is arranged at the bottom of the pipe pile, the inner diameter and the outer diameter of the flange plate are equal to the inner diameter and the outer diameter of the pipe pile, the pile sinking speed can be prevented from being reduced or the pipe is prevented from being blocked due to the increase of the area of the bottom of the pipe pile, meanwhile, the flange plate can be prevented from interfering with other structures, and the normal construction procedure of the pipe pile is not influenced.
The disposable drill bit for soil layer drilling is arranged on the lower surface of the flange plate, and is fixedly connected in a welding mode, so that the disposable drill bit has higher connection strength and can be prevented from being disconnected in the use process. The disposable drill for soil layer drilling comprises a drill body in a sheet shape and two reinforcing ribs. The drill bit main body and the reinforcing ribs are steel sheets, have higher mechanical strength, are easy to manufacture and have lower cost.
The drill bit main part slope sets up on the lower surface of ring flange, and the length direction of drill bit main part is radial parallel with the ring flange, and the contained angle between the lower surface of drill bit main part and ring flange is 45, can cut the broken soil block around when the tubular pile is rotatory fast, makes the regional earth of tubular pile bottom loosen more, the tubular pile of being convenient for deep into the soil layer.
The two side faces of the drill bit main body are respectively connected with the lower surface of the flange plate, the reinforcing ribs are perpendicular to the lower surface of the flange plate, meanwhile, the reinforcing ribs are perpendicular to the drill bit main body, the length direction of the reinforcing ribs is parallel to the tangent line of the flange plate, the connection strength between the drill bit main body and the flange plate can be improved, the drill bit main body cannot be broken easily, and the stability of the integral structure is improved.
Each pair of disposable drill bits for soil layer drilling are symmetrically arranged on two sides of the bottom of the flange along the diameter direction of the flange. 3 arrange with the equidistant interval along the circumference of ring flange in proper order to soil layer brill, and 3 increase gradually with disposable drill bit to ring flange center's distance to soil layer brill, can evenly cut up the soil block around when rotatory, improve the tubular pile and creep into the speed of soil layer.
The vertical distance from the outer side edge of the drill bit main body of the pair of disposable drill bits for soil layer drilling, which is close to the outer side of the flange, to the outer wall of the flange is equal to 20mm; the vertical distance from the inner edge of the drill bit main body of the disposable drill bit for soil layer drilling near the inner side of the flange plate to the inner wall of the flange plate is equal to 20mm, so that the drill bit assembly can break soil blocks at the inner side and the outer side of the pipe pile simultaneously when rotating, a larger annular breaking area is formed, the pile sinking speed is increased, and a channel is provided for mud circulation.
Therefore, the disposable drill bit and the drill bit assembly for soil layer drilling are applicable to the construction of self-drilling large-diameter pipe piles, can enable the pipe piles to sink into soil layers rapidly, are high in use efficiency, low in noise and convenient to operate, and have high popularization and application values.
The above embodiments are preferred examples of the present utility model, and are not intended to limit the scope of the present utility model.
Claims (10)
1. The utility model provides a soil horizon bores with disposable drill bit, installs in the tubular pile bottom through annular ring flange, its characterized in that includes:
the drill bit body is sheet-shaped and is obliquely arranged on the lower surface of the flange plate;
at least two reinforcing ribs respectively connecting the two side surfaces of the drill bit main body and the lower surface of the flange plate,
wherein the included angle between the drill bit main body and the lower surface of the flange plate is 30-60 degrees,
the reinforcing rib is vertical to the lower surface of the flange plate,
the drill bit body and the reinforcing ribs are steel sheets.
2. The disposable drill bit for earth-boring according to claim 1, wherein:
wherein the drill bit body is a rectangular blade, is obliquely downwards arranged, and the length direction of the drill bit body is parallel to the radial direction of the flange plate,
the reinforcing rib is perpendicular to the drill bit main body, and the length direction of the reinforcing rib is parallel to the tangent line of the flange plate.
3. The disposable drill bit for earth-boring according to claim 1, wherein:
wherein the included angle is 45 degrees.
4. A drill bit assembly, comprising:
the flange plate is annular and is arranged at the bottom of the tubular pile, and the inner diameter and the outer diameter of the flange plate are equal to each other; and
at least 3 pairs of disposable drill bits for soil layer drilling,
wherein the disposable drill for soil layer drilling is the disposable drill for soil layer drilling according to any one of claims 1 to 3.
5. The drill bit assembly of claim 4, wherein:
each pair of disposable drill bits for soil layer drilling are symmetrically arranged on two sides of the bottom of the flange plate along the diameter direction of the flange plate.
6. The drill bit assembly of claim 5, wherein:
wherein, 3 pairs of disposable drill bits for soil layer drilling are distributed at equal intervals along the circumference of the flange plate.
7. The drill bit assembly of claim 6, wherein:
and the distances from the disposable drill bit for soil layer drilling to the center of the flange plate are sequentially increased by 3 pairs.
8. The drill bit assembly of claim 7, wherein:
and the vertical distance from the outer side edge of the drill bit main body of the pair of disposable drill bits for soil layer drilling, which is close to the outer side of the flange, to the outer wall of the flange is equal to 20mm.
9. The drill bit assembly of claim 7, wherein:
and the vertical distance from the inner side edge of the drill body of the pair of disposable drill bits for soil layer drilling, which is close to the inner side of the flange, to the inner wall of the flange is equal to 20mm.
10. The drill bit assembly of claim 4, wherein:
the disposable drill bit for soil layer drilling is fixedly connected with the flange plate in a welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222198848.2U CN219061522U (en) | 2022-08-19 | 2022-08-19 | Disposable drill bit and drill bit assembly for soil layer drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222198848.2U CN219061522U (en) | 2022-08-19 | 2022-08-19 | Disposable drill bit and drill bit assembly for soil layer drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219061522U true CN219061522U (en) | 2023-05-23 |
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ID=86366792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222198848.2U Active CN219061522U (en) | 2022-08-19 | 2022-08-19 | Disposable drill bit and drill bit assembly for soil layer drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219061522U (en) |
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2022
- 2022-08-19 CN CN202222198848.2U patent/CN219061522U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230706 Address after: 201804 Room 105, Floor 1, Building 1, No. 6988, Jiasong North Road, Anting Town, Jiading District, Shanghai Patentee after: Shanghai Chuwu Machinery Equipment Co.,Ltd. Address before: 200231 Room A290, No. 286 Luoxiang Road, Xuhui District, Shanghai Patentee before: Shanghai Sishen Foundation Engineering Co.,Ltd. Patentee before: Shanghai Chuwu Machinery Equipment Co.,Ltd. |