CN201083085Y - Drilling rod without welding down-the-hole drill - Google Patents
Drilling rod without welding down-the-hole drill Download PDFInfo
- Publication number
- CN201083085Y CN201083085Y CNU2007200248746U CN200720024874U CN201083085Y CN 201083085 Y CN201083085 Y CN 201083085Y CN U2007200248746 U CNU2007200248746 U CN U2007200248746U CN 200720024874 U CN200720024874 U CN 200720024874U CN 201083085 Y CN201083085 Y CN 201083085Y
- Authority
- CN
- China
- Prior art keywords
- joint
- hole
- drilling rod
- utility
- bar 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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- Earth Drilling (AREA)
Abstract
The utility model discloses a drill rod of a solderless down-the-hole drill, mainly used to connect a drilling machine and a drill bit during rock drilling. The drill rod consists of a rod sleeve and a joint, etc., wherein the upper end of the joint is provided with an external thread. The utility model is characterized in that: the lower end of the joint is embedded in a through hole arranged at the upper end of the rod sleeve in the mode of interference shrinkage fit; moreover, the lower end of the rod sleeve is provided with an internal thread. Compared with the prior art, the utility model has the characteristics of high connecting strength, no welding and low cost, etc., thereby having tremendous value in market promotion and application.
Description
Technical field
The utility model relates to a kind of hidden hole drilling drilling rod, especially a kind of nothing welding hidden hole drilling drilling rod.
Background technology
At present, general hidden hole drilling drilling rod is made of bar tube, male joint and female joint, wherein the male and female joint links together in the mode of welding, friction welding is adopted in this welding usually, and the friction welding apparatus costliness, when particularly welding the major diameter drilling rod, used friction-welding machine is especially expensive, and application life is also lower.
The utility model content
Characteristics such as technical assignment of the present utility model is to provide a kind of hidden hole drilling drilling rod at above the deficiencies in the prior art part, and this drilling rod has the bonding strength height, need not welding, and cost is low.
The technical scheme that its technical problem that solves the utility model adopts is: do not have welding hidden hole drilling drilling rod, constitute by bar tube, joint etc., wherein be provided with external screw thread in the upper end of joint, the lower end that is characterized in joint is embedded in the through hole of bar tube upper end in interference hot charging mode, is provided with internal thread in the lower end of bar tube.
In order to increase the torsional strength of drilling rod, satisfy the needs of rig rock drilling, be provided with pin-and-hole at the place, contact site of joint and bar tube.
The utility model compared with prior art has following useful effect:
1, adopt interference hot charging mode, joint and bar tube are solidified as a whole, increased bonding strength, need not welding, more wear-resisting, cost is lower.
2, directly on the bar tube, internal thread is set, makes technology simpler, process convenient.
3, pin-and-hole is set, the pin of packing in pin-and-hole can increase the torsional strength of drilling rod, has satisfied the needs of rock drilling.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one.
Fig. 2 is the structural representation of the utility model embodiment two.
Among the figure: 1, bar tube, 2, joint, 3, internal thread, 4, pin-and-hole
The specific embodiment
Below in conjunction with Figure of description the utility model is done following detailed explanation.
Embodiment one, as shown in Figure 1, there is not welding hidden hole drilling drilling rod, constitute by bar tube 1, joint 2, bar tube 1 and joint 2 have through hole, the front end of joint 2 is provided with external screw thread, the rear end of joint 2 is embedded in the through hole of bar tube 1 in interference hot charging mode, and wherein the interference hot-mounting process is existing known technology; Be provided with internal thread 3 in the lower end of bar tube 1,, can suitably increase the wall thickness of bar tube 1 in order to make internal thread 3 intensity bigger.
Embodiment two, as shown in Figure 2 is provided with pin-and-hole 4 at the place, contact site of joint 2 and bar tube 1, and the pin of packing in pin-and-hole get final product, and purpose is the torsional strength of increase drilling rod.Other are identical with embodiment one.
Except that the described technical characterictic of manual, other are the known technology of those skilled in the art.
Claims (2)
1. do not have welding hidden hole drilling drilling rod, constitute, wherein be provided with external screw thread, it is characterized in that the lower end of described joint is embedded in the through hole of bar tube upper end in interference hot charging mode, be provided with internal thread in the lower end of described bar tube in the upper end of joint by bar tube, joint etc.
2. drilling rod according to claim 1 is characterized in that being provided with pin-and-hole at the place, contact site of joint and bar tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200248746U CN201083085Y (en) | 2007-07-19 | 2007-07-19 | Drilling rod without welding down-the-hole drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200248746U CN201083085Y (en) | 2007-07-19 | 2007-07-19 | Drilling rod without welding down-the-hole drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201083085Y true CN201083085Y (en) | 2008-07-09 |
Family
ID=39625550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200248746U Expired - Fee Related CN201083085Y (en) | 2007-07-19 | 2007-07-19 | Drilling rod without welding down-the-hole drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201083085Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120431A (en) * | 2014-07-29 | 2014-10-29 | 武穴市长江工具有限责任公司 | Carburizing and manufacturing technology for split down-the-hole drill bit |
| WO2015011336A1 (en) * | 2013-07-26 | 2015-01-29 | Oy Atlas Copco Rotex Ab | Method in putting together of a down-the-hole drilling apparatus and a down-the-hole drilling apparatus |
| CN108775314A (en) * | 2018-06-08 | 2018-11-09 | 云南联塑科技发展有限公司 | A kind of plastics escape pipe fitting being easy to escape |
-
2007
- 2007-07-19 CN CNU2007200248746U patent/CN201083085Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015011336A1 (en) * | 2013-07-26 | 2015-01-29 | Oy Atlas Copco Rotex Ab | Method in putting together of a down-the-hole drilling apparatus and a down-the-hole drilling apparatus |
| US9970238B2 (en) | 2013-07-26 | 2018-05-15 | Oy Atlas Copco Rotex Ab | Method in putting together of a down-the-hole drilling apparatus and a down-the-hole drilling apparatus |
| CN104120431A (en) * | 2014-07-29 | 2014-10-29 | 武穴市长江工具有限责任公司 | Carburizing and manufacturing technology for split down-the-hole drill bit |
| CN108775314A (en) * | 2018-06-08 | 2018-11-09 | 云南联塑科技发展有限公司 | A kind of plastics escape pipe fitting being easy to escape |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 |