CN203081327U - Integral mining drill pipe - Google Patents
Integral mining drill pipe Download PDFInfo
- Publication number
- CN203081327U CN203081327U CN 201320071183 CN201320071183U CN203081327U CN 203081327 U CN203081327 U CN 203081327U CN 201320071183 CN201320071183 CN 201320071183 CN 201320071183 U CN201320071183 U CN 201320071183U CN 203081327 U CN203081327 U CN 203081327U
- Authority
- CN
- China
- Prior art keywords
- pipe
- joint part
- drill pipe
- drilling rod
- thickened
- 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 discloses an integral mining drill pipe. The integral mining drill pipe is characterized by comprising an integral mining drill pipe body (1), wherein a female joint part (2) for locally thickening a pipe wall and a male joint part (4) for locally thickening the pipe wall are respectively arranged on the two ends of the drill pipe body (1); and a middle pipe body (3) is arranged between the female joint part (2) and the male joint part (4). The drill pipe is of an integral structure, the width of the thickened pipe wall is extended through a first transition section and a second transition section on the drill pipe, the stress concentration of the disappear part of the thickened pipe wall is reduced, moreover, the deformation of the thickened pipe wall in a processing process can be decreased, the processing quality of the thickened pipe wall of the drill pipe is ensured, the integral strength of the drill pipe can be increased, and the service life of the drill pipe is prolonged; and the pipe wall of a pipe end is thickened through a drill pipe end thickening forming method, so that the subsequent thread processing of a pipe body is facilitated, technological links are simplified, the utilization ratio of materials is increased, and the production cost is effectively lowered.
Description
Technical field
The utility model relates to the mining drilling rod of a kind of monolithic, belongs to the ore extraction equipment technical field.
Background technology
The now present mining drilling rod that uses, basically form by male joint, middle pipe fitting and three parts of female joint, because mining drilling rod inner chamber cavity is difficult with machine-shaping, so in the manufacturing process, generally adopt after male joint, middle pipe fitting and three part completion of processing of female joint, adopt the mode of welding, the three is linked together, make its one-tenth as a whole.But the mode of occupation to drilling rod is followed the tracks of discovery, and still there is the situation of strength deficiency in the mining drilling rod after the welding.During use, can occur from the situation of weld fracture.Mining drilling rod generally adopts the seamless steel pipe manufacturing, but tube wall can not be too thick, if the too thick cost that increases first of tube wall, second owing to, would increase the load of rig from the great work that is unfavorable for rig on the contrary.Structural requirement from drilling rod, for guaranteeing the connection of drilling rod, the two ends of drilling rod must process the male and female screw thread, can't process but the seamless steel pipe tube wall is thin, mainly be at two ends welding round steel at present, finishes the car hole by machine again, the operation of car male and female screw thread, because this technique process many and complicated (needing repeatedly heat treatment), production efficiency is very low, and waste of material is big simultaneously.Also have a kind of mode of forging pipe end heating back of adopting to realize overstriking at present, but this process equipment have high input, energy consumption is big, is mainly used in the production of heavy caliber petroleum drilling rod, is unsuitable for producing the less mining drilling rod of caliber.
Summary of the invention
The purpose of this utility model is: provide a kind of monolithic mining drilling rod, solve in use, approach by seamless steel pipe tube wall in easy fracture of the drilling rod of welding and the process, be difficult to the problem of machining screw.
The technical solution of the utility model: the mining drilling rod of a kind of monolithic, include all-in-one-piece drilling rod body, the two ends of this drilling rod body are respectively the female joint part and the male joint part of local thickening tube wall, are middle pipe shaft in the middle of female joint part and the male joint part.
The mining drilling rod of above-mentioned monolithic, described male joint part, female joint partly are that middle pipe shaft thickening forms.
The mining drilling rod of above-mentioned monolithic, the drilling rod body two ends inwall of local thickening tube wall is respectively equipped with first changeover portion, second changeover portion.
The beneficial effects of the utility model: this drilling rod is a monolithic construction, first changeover portion on the drilling rod and second changeover portion, realization is carried out width to the thickening tube wall and is extended, the stress that reduces to thicken tube wall disappearance position is concentrated, and can reduce the deflection of thickening in the tube wall process, guarantee the crudy of drill pipe thickening tube wall, in use, can increase its bulk strength, expanded service life; By the drill rocker end upsetting forming method, pipe end to the drilling rod workpiece carries out spot heating, then by axial pressure, the mode of roll extrusion radially, tube wall thickening with pipe end, be convenient to follow-up shaft be carried out screw thread processing, in the process, processing technology has been simplified process procedure, improve stock utilization, effectively reduced cost of production.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
1-drilling rod body, 2-female joint part, pipe shaft in the middle of the 3-, 4-male joint part, 5-first changeover portion, 6-second changeover portion.
The specific embodiment
Embodiment of the present utility model: the mining drilling rod of monolithic, as shown in Figure 1, include all-in-one-piece drilling rod body 1, the two ends of this drilling rod body 1 are respectively the female joint part 2 and the male joint part 4 of local thickening tube wall, are middle pipe shaft 3 in the middle of female joint part 2 and the male joint part 4.
In the manufacturing process, drilling rod body 1 is processed by the drill rocker end upsetting forming method.Adopt the mode of hot roll extrusion, drilling rod is carried out spot heating distortion with seamless pipe, take the mode of radially roll extrusion, axial pressure to thicken, locally-shaped technology, make internal diameter that to a certain degree change take place, reach the purpose of end upsetting.The mode that adopts milling roller to carry out roll extrusion can simplified apparatus, reduces input cost, can also reduce the energy consumption in the manufacturing process.This has just solved not of uniform size the causing of the middle cavity part of female joint part 2, middle pipe shaft 3 and male joint part 4 correspondences on the drilling rod body 1, the problem that is difficult to carry out whole machine-shaping.Make female joint part 2, middle pipe shaft 3 and male joint part 4 not need to process separately, by being welded to form the mode of an integral body, improved the bulk strength of drilling rod then, avoid it in use the often phenomenon of fracture to occur at weld.Drilling rod is in the process of tube wall thickening, mainly be that the tube wall of female joint part 2 and male joint part 4 is thickeied, form first changeover portion 5 that pipe thickness increases gradually in the thickening process between female joint part 2 and the middle pipe shaft 3, form second changeover portion 6 that pipe thickness increases gradually between male joint part 4 and the middle pipe shaft 3, first changeover portion 5 on the drilling rod and second changeover portion 6, the thickening tube wall is carried out thickness to be extended, the stress of middle pipe shaft 3 connecting portions that reduce to thicken tube wall and do not thicken, and can reduce the deflection of thickening in the tube wall process, guarantee the crudy of drill pipe thickening tube wall, in use, can increase its bulk strength, expanded service life.
Claims (3)
1. mining drilling rod of monolithic, it is characterized in that: include all-in-one-piece drilling rod body (1), the two ends of this drilling rod body (1) are respectively the female joint part (2) of local thickening tube wall and the male joint part (4) of local extra strong pipe wall, are middle pipe shaft (3) in the middle of female joint part (2) and the male joint part (4).
2. the mining drilling rod of monolithic according to claim 1 is characterized in that: male joint part (4), female joint part (2) form for middle pipe shaft (3) thickening.
3. the mining drilling rod of monolithic according to claim 1 is characterized in that: drilling rod body (1) the two ends inwall of local thickening tube wall is respectively equipped with first changeover portion (5), second changeover portion (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320071183 CN203081327U (en) | 2013-02-07 | 2013-02-07 | Integral mining drill pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320071183 CN203081327U (en) | 2013-02-07 | 2013-02-07 | Integral mining drill pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203081327U true CN203081327U (en) | 2013-07-24 |
Family
ID=48827178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320071183 Expired - Fee Related CN203081327U (en) | 2013-02-07 | 2013-02-07 | Integral mining drill pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203081327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089162A (en) * | 2013-02-07 | 2013-05-08 | 蒋佐成 | Integral type mining drill rod |
-
2013
- 2013-02-07 CN CN 201320071183 patent/CN203081327U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089162A (en) * | 2013-02-07 | 2013-05-08 | 蒋佐成 | Integral type mining drill rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Guiyang Linhai Machinery Manufacturing Co.,Ltd. Assignor: Jiang Zuocheng Contract record no.: 2015520000012 Denomination of utility model: Integral type mining drill rod Granted publication date: 20130724 License type: Exclusive License Record date: 20150608 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20220207 |