CN203559799U - Protection joint of drill rod - Google Patents
Protection joint of drill rod Download PDFInfo
- Publication number
- CN203559799U CN203559799U CN201320613217.0U CN201320613217U CN203559799U CN 203559799 U CN203559799 U CN 203559799U CN 201320613217 U CN201320613217 U CN 201320613217U CN 203559799 U CN203559799 U CN 203559799U
- Authority
- CN
- China
- Prior art keywords
- screwing
- upper connecting
- adapter
- lower linking
- connecting tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a protection joint of a drill rod. The protection joint comprises an upper adapter and a lower adapter spirally connected with each other, wherein the spiral connection adopts a five-head threaded connection structure; an external thread is formed in the upper adapter; an inner tread is formed in the lower adapter; a screwing off structure is arranged at the joint part of the upper adapter and the lower adapter; a spiral structure is arranged on the screwing off structure; the screwing off structure comprises a first screwing off part arranged at the root of the upper adapter and a second screwing off part arranged on the end surface of the lower adapter; the end surface of the first screwing off part is tightly propped against the end surface of the second screwing off part. According to the utility model, the five-head threaded connection manner is adopted to realize the connection between adapters; the screwing off structure arranged on the adapters not only prevents accidents in the hole caused by over-screwing between connection rods so as to improve the safety property of the drill rod, but also can easily cause the connection rods to detach from each other, so as to improve operation performance.
Description
Technical field
The utility model relates to geological prospecting apparatus field, relates in particular to the drilling rod of rig.
Background technology
Rig is requisite equipment in geological prospecting, and the drilling rod on rig is cylindricality strip structure, in order to improve the intensity of drilling rod, is provided with protection joint on drilling rod; Traditional protection connector by using two extension bar spirals connect, and its connecting thread is one start screw, and between two extension bars, revolves dead connection; The shortcoming of this protection joint is when drilling rod High Rotation Speed and at the bottom of making drilling tool get into hole time, and the connection meeting between extension bar is further strengthened, and causes screw thread generation imposed deformation; when serious, can twist off drilling rod, drilling accident occurs, and when drilling rod reverses; between extension bar, be difficult for threading off, cause operating difficulties.
Utility model content
The applicant, for the above-mentioned shortcoming of existing drilling rod protection joint, studies and improves, and a kind of easy dropout is provided, uses the protection joint of safe drilling rod.
The technical scheme that the utility model adopts is as follows:
A protection joint for drilling rod, comprises upper connecting tube and lower linking tube that spiral connects, and described spiral connects employing five head thread syndetons, and described upper connecting tube is with external screw thread, and lower linking tube is with internal thread; The contact position that is connected of described upper connecting tube and lower linking tube has to revolve and moves back structure, described in revolve and move back structure with step helix structure; Described revolving moved back structure and comprised first the revolving the portion of moving back and be positioned at second of lower linking tube end face and revolve the portion of moving back of external screw thread root that is positioned at upper connecting tube, and described the first end face that revolves the portion of moving back is close proximity to described second and revolves the end face of the portion of moving back.
The beneficial effects of the utility model are as follows:
The mode that the utility model adopts five head threads to connect realizes the connection between adapter, and move back structure in taking over above to arrange to revolve, not only avoided causing due to overwinding between extension bar the phenomenon of drilling accident, improved the security performance of drilling rod, and can make easily to thread off between extension bar, improve operating characteristics.
Accompanying drawing explanation
Fig. 1 is three-dimensional adapter figure of the present utility model.
Fig. 2 is the A place partial enlarged drawing of Fig. 1.
Fig. 3 is the three-dimensional structure diagram of lower linking tube.
Fig. 4 is the three-dimensional structure diagram of upper connecting tube.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described.
See Fig. 1 to Fig. 4, the utility model comprises upper connecting tube 1 and the lower linking tube 2 that spiral connects, and described spiral connects employing five head thread syndetons, and described upper connecting tube 1 is with external screw thread 12, and lower linking tube 2 is with internal thread 22; The contact position that is connected of described upper connecting tube 1 and lower linking tube 2 has to revolve and moves back structure 3, described in revolve and move back structure 3 with step helix structure; Described revolving moved back structure 3 and comprised first the revolving the portion of moving back 11 and be positioned at second of lower linking tube 2 end faces and revolve the portion of moving back 21 of external screw thread root that is positioned at upper connecting tube 1, after upper connecting tube 1 screws with lower linking tube 2, described the first end face that revolves the portion of moving back 11 is close proximity to described second and revolves the end face of the portion of moving back 21, external screw thread 12 cannot be screwed in to the root of internal thread 22, thereby avoided spinning tension between upper connecting tube 1 and lower linking tube 2 and the problem that causes screw thread distortion and cannot thread off.
More than describing is to explanation of the present utility model, is not the restriction to utility model, and the utility model limited range is referring to claim, and without prejudice to spirit of the present utility model in the situation that, the utility model can be done any type of modification.
Claims (1)
1. the protection joint of a drilling rod, comprise upper connecting tube (1) and lower linking tube (2) that spiral connects, it is characterized in that: described spiral connects employing five head thread syndetons, and described upper connecting tube (1) is with external screw thread (12), and lower linking tube (2) is with internal thread (22); The contact position that is connected of described upper connecting tube (1) and lower linking tube (2) has to revolve and moves back structure (3), described in revolve and move back structure (3) with step helix structure; Described revolving moved back structure (3) and comprised first the revolving the portion of moving back (11) and be positioned at second of lower linking tube (2) end face and revolve the portion of moving back (21) of external screw thread root that is positioned at upper connecting tube (1), and the described first end face that revolves the portion of moving back (11) is close proximity to described second and revolves the end face of the portion of moving back (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320613217.0U CN203559799U (en) | 2013-09-30 | 2013-09-30 | Protection joint of drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320613217.0U CN203559799U (en) | 2013-09-30 | 2013-09-30 | Protection joint of drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203559799U true CN203559799U (en) | 2014-04-23 |
Family
ID=50509527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320613217.0U Expired - Fee Related CN203559799U (en) | 2013-09-30 | 2013-09-30 | Protection joint of drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203559799U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510874A (en) * | 2013-09-30 | 2014-01-15 | 无锡中地地质装备有限公司 | Protection connector of drill rod |
-
2013
- 2013-09-30 CN CN201320613217.0U patent/CN203559799U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510874A (en) * | 2013-09-30 | 2014-01-15 | 无锡中地地质装备有限公司 | Protection connector of drill rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUXI GEOTEC DRILLING EQUIPMENT CO., LTD. Free format text: FORMER OWNER: WUXI GEOTEC GEOLOGICAL EQUIPMENT CO., LTD. Effective date: 20140411 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140411 Address after: 214000 Jiangsu Province, Wuxi city Xishan District Yangjian machinery equipment Industrial Park B District Patentee after: WUXI ZHONGDI DRILLING EQUIPMENT CO., LTD. Address before: 214000 Xintai industrial supporting garden, Mei Cun, New District, Jiangsu, Wuxi Patentee before: Wuxi Geotec Geological Equipment Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20150930 |
|
| EXPY | Termination of patent right or utility model |