CN212428595U - Constant-speed spiral rotary drilling bit - Google Patents
Constant-speed spiral rotary drilling bit Download PDFInfo
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- CN212428595U CN212428595U CN202020670379.8U CN202020670379U CN212428595U CN 212428595 U CN212428595 U CN 212428595U CN 202020670379 U CN202020670379 U CN 202020670379U CN 212428595 U CN212428595 U CN 212428595U
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Abstract
The utility model is used for the construction machinery field especially relates to a drill bit is dug soon to constant speed spiral. The drill comprises a cylindrical drill barrel, wherein a constant-speed spiral lath made of wear-resistant steel is welded on the outer wall of the drill barrel from one end to the other end along the axial direction; the lath is made of wear-resistant steel and is fixed on the outer surface of the drill cylinder through welding; the helix angle of the slats is 5 °. The outer diameter of the drill cylinder is 100cm, and the screw pitch V of the lath is 27.5 cm; the width and thickness of the slats was 5 cm. When the drill bit works, the sludge around the drill cylinder moves along the lath, so that the friction to the drill cylinder can be reduced, and a wall protection mud film is uniformly formed on the inner wall of the drill cylinder hole forming, thereby preventing sticking and sucking the drill; in addition, the resistance of the drill cylinder is reduced, mud at the drill bit forms circulation, the rotary drilling footage can be guaranteed to the maximum extent, negative pressure is brought by the least materials and the lowest energy consumption, the perpendicularity of a pile foundation is guaranteed, and partial working procedures are reduced.
Description
Technical Field
The utility model is used for the construction machinery field especially relates to a drill bit is dug soon to constant speed spiral.
Background
The rotary drill bit is construction equipment commonly used in construction sites and used for drilling holes or trenching. The rotary drilling rig has a plurality of drill bits, and a hole expanding drill bit and a core bit are commonly used. The existing rotary drilling bit has more application problems, and firstly, in the traditional construction process, the existing drill bit is easy to stick and suck; secondly, when the drilling power of the drill bit is larger, the surface of the drill bit lacks a wall protection mud skin or the formed mud skin has poor adhesive force, and the inner wall of the drilled hole is hollow; moreover, the storage cylinder that easily wears when the rotation is dug soon to current drill bit, need repeated change to dig the drill bit soon in the work progress for constructor work load grow, and material cost increases, and is consuming time many, influences the engineering progress.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the technical problem who exists among the known art and provide a constant speed spiral dig drill bit soon. The drill bit performs reaming operation while coring, reduces coaxiality error of cosmetic-based hole sites by using the spiral protection wall and conveying materials, repairs the hole wall and protects the drill bit, saves time for frequently changing the drill bit, and reduces material use and labor intensity of workers.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a constant-speed spiral rotary drilling bit comprises a cylindrical drilling barrel, wherein constant-speed spiral battens made of wear-resistant steel are welded on the outer wall of the drilling barrel from one end to the other end along the axial direction; the lath is made of wear-resistant steel and is fixed on the outer surface of the drill cylinder through welding; the helix angle of the lath is 3-5 degrees.
Further, the outer diameter of the drill cylinder is 80-120cm, and the pitch V of the lath is 13.2-27.5 cm; the width and thickness of the slats was 5 cm.
The utility model has the advantages and positive effects that:
1. when the drill bit works, sludge around the drill cylinder moves along the lath, so that the friction on the drill cylinder can be reduced, and a wall protection sludge film is uniformly formed on the inner wall of a hole formed by the drill cylinder, so that the drill bit is prevented from being stuck and sucked;
2. the resistance of the drill cylinder is reduced, mud at the drill bit forms circulation, rotary drilling footage can be guaranteed to the maximum extent, negative pressure brought by the least materials and the lowest energy consumption is more beneficial to guaranteeing the verticality of a pile foundation, the coaxiality error of cosmetic base hole sites is reduced, and partial working procedures are reduced;
3. the drill bit can perform reaming work while coring, repair the hole wall and protect the drill bit by utilizing the spiral retaining wall and conveying materials, save the time for frequently changing the drill bit and reduce the material use and the labor intensity of workers.
Description of the drawings:
fig. 1 is a front view of a rotary drilling bit of the present invention;
fig. 2 is a top view of fig. 1.
Wherein: 1. drilling a barrel; 2. a slat.
Detailed Description
The drawings in the embodiments of the present invention will be combined; the technical scheme in the embodiment of the utility model is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the present invention; rather than all embodiments. Based on the embodiment of the utility model; all other embodiments obtained by a person skilled in the art without making any inventive step; all belong to the protection scope of the utility model.
As shown in fig. 1 and 2, the utility model provides a constant speed spiral rotary drilling bit, which comprises a cylindrical drilling barrel 1, wherein a constant speed spiral lath 2 made of wear-resistant steel is welded on the outer wall of the drilling barrel from one end to the other end along the axial direction; the lath is welded on the outer surface of the drill barrel by wear-resistant steel;
preferably, tan α is V/H according to the formula; wherein alpha is the helix angle of the lath 2, V is the thread pitch of the lath 2, and H is the indexing circumference of the drill barrel 1; for a drill barrel 1 with the outer diameter of 80-120cm, the helix angle of the drill barrel is 3-5 degrees, and the pitch V of the lath 2 is 13.2-27.5 cm; the slats 2 are furthermore 5cm wide and thick.
When the peripheral speed and the linear speed of the drill barrel are simultaneously doubled, the shape of the constant-speed spiral is not changed, and the drill belongs to a constant-speed ratio spiral, and the drill has the following characteristics: 1. when the drill bit works, sludge around the drill cylinder moves along the lath, so that the friction on the drill cylinder can be reduced, and a wall protection sludge film is uniformly formed on the inner wall of a hole formed by the drill cylinder, so that the drill bit is prevented from being stuck and sucked; 2. the resistance of the drill cylinder is reduced, mud at the drill bit forms circulation, the rotary drilling footage can be guaranteed to the maximum extent, negative pressure is brought by the least materials and the lowest energy consumption, the perpendicularity of a pile foundation is guaranteed, and partial working procedures are reduced. The drill bit can be widely applied to construction of construction machinery for hole digging, pile filling, pile supporting, foundation reinforcing, and foundation construction of various foundations meeting rock strata, sandstone layers, quicksand layers and the like.
The embodiments of the present invention have been described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (2)
1. The utility model provides a constant speed spiral rotary drill bit, this drill bit includes the columniform and bores a section of thick bamboo, its characterized in that: the outer wall of the drill cylinder is welded with a constant-speed spiral lath made of wear-resistant steel from one end to the other end along the axial direction; the lath is made of wear-resistant steel and is fixed on the outer surface of the drill cylinder through welding; the helix angle of the lath is 3-5 degrees.
2. The constant velocity spiral rotary drill bit of claim 1 further comprising: the outer diameter of the drill cylinder is 80-120cm, and the pitch V of the lath is 13.2-27.5 cm; the width and thickness of the slats was 5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020670379.8U CN212428595U (en) | 2020-04-27 | 2020-04-27 | Constant-speed spiral rotary drilling bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020670379.8U CN212428595U (en) | 2020-04-27 | 2020-04-27 | Constant-speed spiral rotary drilling bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212428595U true CN212428595U (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020670379.8U Active CN212428595U (en) | 2020-04-27 | 2020-04-27 | Constant-speed spiral rotary drilling bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212428595U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931572A (en) * | 2021-09-22 | 2022-01-14 | 中交路桥华南工程有限公司 | Construction method of large-diameter pile foundation of composite stratum and drill bit system |
| CN114215480A (en) * | 2021-11-15 | 2022-03-22 | 张家口路桥建设集团有限公司 | Sand flow geological rotary drill and long pile casing slurry pore-forming method adopting same |
-
2020
- 2020-04-27 CN CN202020670379.8U patent/CN212428595U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931572A (en) * | 2021-09-22 | 2022-01-14 | 中交路桥华南工程有限公司 | Construction method of large-diameter pile foundation of composite stratum and drill bit system |
| CN113931572B (en) * | 2021-09-22 | 2024-01-19 | 中交路桥华南工程有限公司 | Construction method of large-diameter pile foundation of composite stratum and drill bit system |
| CN114215480A (en) * | 2021-11-15 | 2022-03-22 | 张家口路桥建设集团有限公司 | Sand flow geological rotary drill and long pile casing slurry pore-forming method adopting same |
| CN114215480B (en) * | 2021-11-15 | 2023-09-15 | 张家口路桥建设集团有限公司 | Rotary drilling drill for drift sand geology and long casing slurry pore-forming method adopting rotary drilling drill |
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