CN204789026U - Drilling held coring device's drill bit connection structure - Google Patents
Drilling held coring device's drill bit connection structure Download PDFInfo
- Publication number
- CN204789026U CN204789026U CN201520487431.5U CN201520487431U CN204789026U CN 204789026 U CN204789026 U CN 204789026U CN 201520487431 U CN201520487431 U CN 201520487431U CN 204789026 U CN204789026 U CN 204789026U
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- transmission shaft
- drill bit
- adapter sleeve
- link
- screw thread
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Abstract
The utility model discloses a drilling held coring device's drill bit connection structure, it is including boring sub - driven transmission shaft and drill bit, and still including fixing the lasso, the tip of transmission shaft has the transmission shaft link of expansion, is equipped with axial transmission shaft insection on the transmission shaft link for it, the link of drill bit has the drill bit adapter sleeve, is equipped with axial adapter sleeve insection on the inner wall of drill bit adapter sleeve, is equipped with the adapter sleeve screw thread on the drill bit adapter sleeve outer wall, transmission shaft intermeshing on adapter sleeve insection on the drill bit adapter sleeve inner wall and the transmission shaft link, fixed lasso inner wall is equipped with fixed lasso screw thread, and the upper end of fixed lasso has a limiting check ring, fixed lasso screw matees and threaded connection with the adapter sleeve screw, and the limiting check ring's that fixed cover circled internal diameter is greater than the diameter of transmission shaft, is lighter than the diameter of transmission shaft link, and the upper end top of transmission shaft link is at the limiting check ring downside. The utility model discloses avoided prior art to make the tip of transmission shaft and the screw thread of drill bit link screw up the phenomenon, made the drill bit dismantle easily the held coring device's that conveniently drills use.
Description
Technical field
The utility model relates to a kind of boring and coring device drilling through concrete, asphalt mat sample, is more specifically a kind of drill bit connection structure of boring and coring device, belongs to test apparatus technical field.
Background technology
At concrete, bituminous pavements such as construction work, highway, airport, harbour, dams, usually adopt boring and coring device to obtain examination core, the examination core obtained is for the test such as resistance to compression, anti-folding.
Boring and coring device comprises work trestle and is arranged on the boring assemblies on work trestle.Boring assemblies comprises awl and drives and drive with awl the drill bit be in transmission connection.The drill bit connection structure of existing boring and coring device is: have external thread in the end of the transmission shaft of awl driving, at the link of drill bit, there is connecting hole, connecting hole is provided with internal thread, by the external thread of the end of transmission shaft and the screw-internal thread fit of drill bit link, drill bit and awl are driven and is in transmission connection.What drive for keeping drill bit and awl is in transmission connection, the end of transmission shaft and the hand of spiral of drill bit link are: during boring and coring device work drill bit rotational, make the end of transmission shaft and the screwed tight of drill bit link, otherwise the transmission shaft easily making drill bit and awl drive departs from.But above-mentioned drill bit connection structure Problems existing is, when after the work of boring and coring device, it is very tight that the end of transmission shaft and the screw thread of drill bit link are twisted, and dismounting drill bit becomes abnormal difficult, brings inconvenience to the use of boring and coring device.
Utility model content
For above-mentioned situation, the problem that the utility model quasi-solution is determined is to provide a kind of drill bit connection structure of boring and coring device of drill bit convenient disassembly, to facilitate the use of boring and coring device.
For reaching above-mentioned purpose, the utility model have employed following technical scheme: a kind of drill bit connection structure of boring and coring device, it comprises transmission shaft and the drill bit of awl driving, it also comprises fixing lasso, the end of described transmission shaft has the transmission shaft link of expansion, and described transmission shaft link is provided with axial transmission shaft groove; The link of described drill bit has drill bit adapter sleeve, the inwall of described drill bit adapter sleeve is provided with axial adapter sleeve groove, described drill bit adapter sleeve outer wall is provided with adapter sleeve screw thread, and the adapter sleeve groove on described drill bit adapter sleeve inwall mates with the transmission shaft groove on transmission shaft link and engages each other; Described fixing lasso inwall is provided with fixing lasso screw thread, the upper end of described fixing lasso has spacing back-up ring, described fixing lasso screw thread mates with adapter sleeve screw thread and is threaded, the internal diameter of the spacing back-up ring on described fixing lasso is greater than the diameter of transmission shaft, is less than the diameter of transmission shaft link, and the upper end of transmission shaft link withstands on the downside of spacing back-up ring.
Adopt such scheme, the drill bit connection structure of boring and coring device of the present utility model, because the adapter sleeve groove on drill bit adapter sleeve inwall mates with the transmission shaft groove on transmission shaft link and engages each other, the radial direction achieving drill bit and transmission shaft is fixed, when making boring and coring device work drill bit rotational, torsion between drill bit and transmission shaft in engagement shaft on groove, avoid prior art and make the end of transmission shaft and the screwed tight phenomenon of drill bit link, drill bit is dismantled easily, facilitates the use of boring and coring device.
In addition, fixing lasso is on the one hand by the fixing lasso screw thread of inwall, fix with the drill bit adapter sleeve of the link of drill bit, on the other hand, by the spacing back-up ring of the upper end of fixing lasso, the upper end of transmission shaft link is withstood on the downside of spacing back-up ring, achieved the axial restraint of fixing lasso and transmission shaft link.Meanwhile, the radial direction due to drill bit and transmission shaft fixedly to be engaged with transmission shaft groove by adapter sleeve groove and realizes, during boring and coring device work drill bit rotational, and can not be stressed to the screw thread between fixing lasso and drill bit adapter sleeve.
Accompanying drawing explanation
Fig. 1 is the structural representation of the drill bit connection structure of the utility model boring and coring device;
Fig. 2 is the structural representation of the transmission shaft that awl drives;
Fig. 3 is the structural representation that Fig. 2 looks up direction;
Fig. 4 is the structural representation of the link of drill bit;
Fig. 5 is the structural representation that Fig. 4 overlooks direction;
Fig. 6 is the structural representation of fixing lasso;
Fig. 7 is the structural representation that Fig. 6 overlooks direction.
In figure: 1-awl drives, and 2-transmission shaft, 3-drill bit, 4-fixes lasso, 5-transmission shaft link, 6-transmission shaft groove, 7-drill bit adapter sleeve, 8-adapter sleeve groove, 9-adapter sleeve screw thread, and 10-fixes lasso screw thread, the spacing back-up ring of 11-.
Embodiment
As shown in Figure 1, the drill bit connection structure of boring and coring device of the present utility model, it comprises transmission shaft 2 and the drill bit 3 that awl drives 1, and described transmission shaft 2 and drill bit 3 are interconnected, feature of the present utility model be transmission shaft 2 with the syndeton of drill bit 3 on improve.
The drill bit connection structure of boring and coring device of the present utility model it further comprises fixing lasso 4.
See Fig. 2, Fig. 3, the end of the transmission shaft 2 of the drill bit connection structure of boring and coring device of the present utility model has the transmission shaft link 5 of expansion, and described transmission shaft link 5 is provided with axial transmission shaft groove 6.
See Fig. 4, Fig. 5, the link of the drill bit 3 of boring and coring device of the present utility model has drill bit adapter sleeve 7, the inwall of described drill bit adapter sleeve 7 is provided with axial adapter sleeve groove 8, described drill bit adapter sleeve 7 outer wall is provided with adapter sleeve screw thread 9, and the adapter sleeve groove 8 on described drill bit adapter sleeve 7 inwall mates with the transmission shaft groove 6 on transmission shaft link 5 and engages each other (see Fig. 1).
See Fig. 6, Fig. 7, fixing lasso 4 inwall of boring and coring device of the present utility model is provided with fixing lasso screw thread 10, the upper end of described fixing lasso 4 has spacing back-up ring 11, described fixing lasso screw thread 10 mates with adapter sleeve screw thread 9 and is threaded, the internal diameter of the spacing back-up ring 11 on described fixing lasso 4 is greater than the diameter of transmission shaft 2, is less than the diameter of transmission shaft link 5, and the upper end of transmission shaft link 5 withstands on the downside of spacing back-up ring 11 (see Fig. 1).
Claims (1)
1. a drill bit connection structure for boring and coring device, it comprises transmission shaft (2) and the drill bit (3) that awl drives (1), it is characterized in that it also comprises fixing lasso (4),
The end of described transmission shaft (2) has the transmission shaft link (5) of expansion, and described transmission shaft link (5) is provided with axial transmission shaft groove (6);
The link of described drill bit (3) has drill bit adapter sleeve (7), the inwall of described drill bit adapter sleeve (7) is provided with axial adapter sleeve groove (8), described drill bit adapter sleeve (7) outer wall is provided with adapter sleeve screw thread (9), and the adapter sleeve groove (8) on described drill bit adapter sleeve (7) inwall mates with the transmission shaft groove (6) on transmission shaft link (5) and engages each other;
Described fixing lasso (4) inwall is provided with fixing lasso screw thread (10), the upper end of described fixing lasso (4) has spacing back-up ring (11), described fixing lasso screw thread (10) is mated with adapter sleeve screw thread (9) and is threaded, the internal diameter of the spacing back-up ring (11) on described fixing lasso (4) is greater than the diameter of transmission shaft (2), is less than the diameter of transmission shaft link (5), and the upper end of transmission shaft link (5) withstands on spacing back-up ring (11) downside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520487431.5U CN204789026U (en) | 2015-07-08 | 2015-07-08 | Drilling held coring device's drill bit connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520487431.5U CN204789026U (en) | 2015-07-08 | 2015-07-08 | Drilling held coring device's drill bit connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204789026U true CN204789026U (en) | 2015-11-18 |
Family
ID=54529045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520487431.5U Active CN204789026U (en) | 2015-07-08 | 2015-07-08 | Drilling held coring device's drill bit connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204789026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644568A (en) * | 2016-12-26 | 2017-05-10 | 东北电力大学 | Concrete drilling and sampling machine |
-
2015
- 2015-07-08 CN CN201520487431.5U patent/CN204789026U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644568A (en) * | 2016-12-26 | 2017-05-10 | 东北电力大学 | Concrete drilling and sampling machine |
| CN106644568B (en) * | 2016-12-26 | 2019-06-07 | 东北电力大学 | A kind of concrete drill hole sampler |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |