CN204139976U - A kind of drill bit being provided with necking down coil apparatus - Google Patents
A kind of drill bit being provided with necking down coil apparatus Download PDFInfo
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- CN204139976U CN204139976U CN201420506375.0U CN201420506375U CN204139976U CN 204139976 U CN204139976 U CN 204139976U CN 201420506375 U CN201420506375 U CN 201420506375U CN 204139976 U CN204139976 U CN 204139976U
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- necking down
- drill
- drill bit
- neck
- drill neck
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Abstract
The utility model relates to a kind of away drill cuttings, is specially a kind of drill bit being provided with necking down coil apparatus.Structure comprises brill body, drill neck, apex point, bore body to be connected by junction plate one with drill neck, described brill is provided with three bites with it, described bite one end and drill neck edge conjunction, the other end is connected near apex point place with below brill body, above drill neck, be provided with necking down circle, necking down circle becomes round table-like, is welded to connect with drill neck, hole wall can not be linked into when drill bit is promoted in the irrigation process of inclined hole castinplace pile, effectively ensure that construction quality, and drill bit relative cost is low, economic and practical.
Description
Technical field
The utility model relates to a kind of away drill cuttings, is specially a kind of drill bit being provided with necking down coil apparatus.
Background technology
Along with the development of society, the progress of science and technology, people get more and more to engineering functional requirement, also more and more higher to the structural requirement of engineering, the engineering of heavy in section, large floor height gets more and more, thus in construction, the requirement of basement process is also improved constantly, inclined hole castinplace pile also constantly applies in Practical Project.
Inclined hole castinplace pile is what tilt because of its pore-forming, after pore-forming completes, is easy to be linked into hole wall when drill bit promotes, bring very large difficulty to the lifting of drill bit, and can hole wall be destroyed, cause quality accident, in order to solve this problem, we have proposed and increase this scheme of necking down circle.
Summary of the invention
There is the problem of potential safety hazard in order to the lifting solving drill bit in the utility model, provides a kind of drill bit being provided with necking down coil apparatus to inclined hole castinplace pile.
Technical scheme described in the utility model, a kind of drill bit being provided with necking down coil apparatus, structure comprises brill body, drill neck, apex point, is bored body and is connected by junction plate one with drill neck, described brill is provided with three bites with it, described bite one end and drill neck edge conjunction, the other end is connected near apex point place with below brill body, is provided with necking down circle above drill neck.
Compared with prior art, the utility model adds necking down circle, the drill bit being provided with necking down coil apparatus of composition, necking down circle have employed some trapezoidal steel plate chain intermittent weld and becomes round table-like, drill neck is identical with necking down circle lower part diameter, necking down circle upper part diameter is less than lower part diameter, necking down circle and drill neck are welded to connect, make the drill neck edge being provided with necking down coil apparatus curved, and tilt to touch with mud off, therefore, drill bit can not be linked into hole wall when promoting, effectively ensure that construction quality, and drill bit relative cost is low, economic and practical.
accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the top view of Fig. 1;
Fig. 3 a, Fig. 3 b, Fig. 3 c are the machining sketch chart of necking down coil apparatus;
Fig. 4 is the construction reference view of Fig. 1;
In figure: 1-bores body, 2-necking down circle, 3-drill neck, 4-bite, 5-apex point, 6-junction plate, the trapezoidal steel plate of 7-, 8-weld seam, 9-mud off, 10-drill bit.
Detailed description of the invention
As schematically shown in Figure 1, 2, a kind of drill bit being provided with necking down coil apparatus, structure comprises bores body 1, drill neck 3, apex point 5, is bored body 1 and is connected by junction plate 6 one with drill neck 3, described brill body 1 is provided with three bites 4, described bite 4 one end and drill neck 3 edge conjunction, the other end is connected near apex point 5 place with below brill body 1, is provided with necking down circle 2 above drill neck 3.
As Fig. 3 a, 3b, 3c illustrate, described necking down circle 2 have employed some trapezoidal steel plate 7 chain intermittent weld and becomes round table-like, and drill neck 3 is identical with necking down circle 2 lower part diameter, and necking down circle 2 upper part diameter is less than lower part diameter, and necking down circle 2 and drill neck 3 are welded to connect.
As schematically shown in Figure 4, a kind of drill bit being provided with necking down coil apparatus, when drill bit 10 promotes in mud off 9, drill neck 3 edge being provided with necking down circle 2 device is curved, and tilt to touch with mud off 9, described necking down circle 2 makes drill bit 10 to be linked into hole wall, effectively ensure that construction quality.
Claims (2)
1. one kind is provided with the drill bit of necking down coil apparatus, structure comprises bores body (1), drill neck (3), apex point (5), it is characterized in that: bore body (1) and be connected by junction plate (6) one with drill neck (3), described brill body (1) is provided with three bites (4), described bite (4) one end and drill neck (3) edge conjunction, the other end is connected near apex point (5) place with brill body (1) below, is provided with necking down circle (2) in drill neck (3) top.
2. the drill bit being provided with necking down coil apparatus according to claim 1, it is characterized in that: described necking down circle (2) becomes round table-like by some trapezoidal steel plate (7) chain intermittent weld, drill neck (3) is identical with necking down circle (2) lower part diameter, necking down circle (2) upper part diameter is less than lower part diameter, and necking down circle (2) and drill neck (3) are welded to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420506375.0U CN204139976U (en) | 2014-09-04 | 2014-09-04 | A kind of drill bit being provided with necking down coil apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420506375.0U CN204139976U (en) | 2014-09-04 | 2014-09-04 | A kind of drill bit being provided with necking down coil apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204139976U true CN204139976U (en) | 2015-02-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420506375.0U Active CN204139976U (en) | 2014-09-04 | 2014-09-04 | A kind of drill bit being provided with necking down coil apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204139976U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640049A (en) * | 2016-10-14 | 2017-05-10 | 中国科学院武汉岩土力学研究所 | Automatic necking drilling device capable of keeping original state of drill hole wall |
-
2014
- 2014-09-04 CN CN201420506375.0U patent/CN204139976U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640049A (en) * | 2016-10-14 | 2017-05-10 | 中国科学院武汉岩土力学研究所 | Automatic necking drilling device capable of keeping original state of drill hole wall |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |