CN101503949A - Double-thread hollow coring drill rod - Google Patents
Double-thread hollow coring drill rod Download PDFInfo
- Publication number
- CN101503949A CN101503949A CNA2009100964059A CN200910096405A CN101503949A CN 101503949 A CN101503949 A CN 101503949A CN A2009100964059 A CNA2009100964059 A CN A2009100964059A CN 200910096405 A CN200910096405 A CN 200910096405A CN 101503949 A CN101503949 A CN 101503949A
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- thread
- drilling rod
- metal
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- liner pipe
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Abstract
The invention discloses a double-thread hollow core drilling rod, which consists of an inner thread, a polymer liner pipe, a metal outer thread and a metal hollow drilling rod, wherein the metal outer thread is arranged on the outer surface of the metal hollow drilling rod; the inner thread is arranged on the inner surface of the polymer liner pipe; and the metal hollow drilling pipe and the polymer liner pipe are connected through a groove and a convex wedge. The double-thread hollow core drilling rod is suitable for core drilling of various soft rock formations such as deposits, soil, frozen soil and ice, and is particularly suitable for core drilling of the deposits.
Description
Technical field
The present invention relates to a kind of drilling rod, relate in particular to a kind of special-purpose drilling rod that is suitable for incompetent bed, soil, frozen soil, ice and soft-sediment are carried out boring coring.
Background technology
Large type drill generally is to be the boring coring target with the hard formation, and its core-taking technology do not consider sedimental disturbance, they to sedimental core-taking rate at the bottom of, and the rock core that is obtained can not be represented sedimental original occurrence and structure.
The hollow thread drilling rod that existing engineering driller adopted has plenty of the dust (as: CN85200953 in order to reduce drilling process; CN200410073303.2); Have plenty of in order to accelerate creeping in soil horizon (as: CN90216563.1); Also have plenty of for the threaded stake of formation hole in soil, the bearing capacity of raising stake (as: CN01250189.1, CN01250190.5, CN200610009969.0, etc.).The common trait of these patents is, the helicitic texture on the drilling rod is for mechanical fixation and accelerates its drilling efficiency in soil layer, and institute to liking the soil that moisture content is lower, structure is harder.Water system deposit moisture content height such as ocean, lake, loosely organized, in the drilling rod progradation, distortion can be extruded, or rock core can't be obtained because of the disturbance pulp.By improving jackrod structure, improve sedimental core-taking rate, reduce sedimental disturbance, significant in research fields such as geology, ocean, lake, water conservancy, environment.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of double-thread hollow coring drill rod is provided, it can effectively improve sedimental core-taking rate, reduces sedimental disturbance, for researchs such as geology, ocean, lake, water conservancy improve high-quality deposit core sample.
The objective of the invention is to be achieved through the following technical solutions: a kind of double-thread hollow coring drill rod, it mainly is made up of internal screw thread, polymer liner pipe, metal external screw teeth and metal hollow drilling rod; The metal external screw teeth is at metal hollow drilling rod external surface, and internal screw thread is at the polymeric liner pipe internal surface, and the metal hollow drilling rod is connected with protruding wedge by groove with polymer liner pipe.
Further, the internal diameter of described metal hollow drilling rod is 50～200 millimeters, 5～20 millimeters of wall thickness.The cross section of described metal external screw teeth is trapezoidal or triangle, highly is 5～20% of metal hollow drilling rod internal diameter, and the root width is 10～30% of a height, and the pitch of metal external screw teeth is 0.5～2.5 times of metal hollow drilling rod external diameter.Described polymer liner pipe is made by engineering plastics, organic glass or polytetrafluoroethylene (PTFE) injection mo(u)lding, 3～8 millimeters of wall thickness, internal screw thread is opposite with metal external screw teeth rotation direction, and pitch is identical, the internal screw thread cross section is a rectangle or trapezoidal, highly is 5～10% of polymeric liner bore.Described groove is the linear pattern groove on the metal hollow drilling rod inwall, and the degree of depth and width are 1～5 millimeter.Described protruding wedge is the protruding wedge of linear pattern on the polymer liner pipe outer wall, its degree of depth and width and groove coupling.
The invention has the beneficial effects as follows: the present invention is primarily aimed at the sedimental sampling of not fixed water system and designs.The water system deposit is subject to disturbance in drilling process, the prototype structure of sample is difficult to keep, and drilling rod push can make deposit to around arrange, cause the interior no rock core of drilling rod.Adopt the hollow coring drill rod of inside and outside two screw threads, can be converted into down action edge to the drilling rod revolving force on the one hand, can provide action edge for the sample in the bushing pipe simultaneously, therefore can reduce disturbance, improve core-taking rate sample.The present invention is suitable for the boring coring of all kinds of incompetent beds, as deposit, soil, frozen soil, ice, is particularly suitable for sedimental boring coring.
Description of drawings
Fig. 1 is a double-thread hollow coring drill rod three-dimensional view of the present invention:
Fig. 2 is a double-thread hollow coring drill rod lateral view of the present invention:
Fig. 3 is thread and wall thickness dimension enlarged diagram.
The specific embodiment
Describe the present invention in detail with embodiment with reference to the accompanying drawings below, it is more obvious that purpose of the present invention and effect will become.
As shown in the figure, double-thread hollow of the present invention is got core bar it mainly is made up of internal screw thread 1, polymer liner pipe 2, metal external screw teeth 3 and metal hollow drilling rod 4; At metal hollow drilling rod 4 external surfaces, polymer liner pipe 2 inner surfaces have internal screw thread 1 to metal external screw teeth 3 fixing (as by welding), and metal hollow drilling rod 4 is connected with protruding wedge 6 by groove 5 with polymer liner pipe 2.
The internal diameter of metal hollow drilling rod 4 is 50～200 millimeters, 5～20 millimeters of wall thickness.
The cross section of metal external screw teeth 3 is trapezoidal or triangle, highly is 5～20% of metal hollow drilling rod 4 internal diameters, and the root width is 10～30% of a height, and the pitch of metal external screw teeth 3 is 0.5～2.5 times of metal hollow drilling rod 4 external diameters.
Polymer liner pipe 2 is made by material injection mo(u)ldings such as engineering plastics, organic glass, polytetrafluoroethylene (PTFE), 3～8 millimeters of wall thickness, internal screw thread 1 is opposite with metal external screw teeth 3 rotation directions, and pitch is identical, internal screw thread 1 cross section is a rectangle or trapezoidal, highly is 5～10% of polymer liner pipe 2 internal diameters.
Groove 5 is the linear pattern grooves on metal hollow drilling rod 4 inwalls, and the degree of depth and width are 1～5 millimeter; Protruding wedge 6 is the protruding wedges of linear pattern on polymer liner pipe 2 outer walls, its degree of depth and width and groove 5 couplings.
Embodiment
As shown in Figure 1, metal hollow drilling rod 4 external diameters (not comprising external screw teeth) D1 is 116mm; Inside diameter D 2 is 100mm, and this also is polymer liner pipe 2 external diameters; Polymer liner pipe 2 inside diameter D 3 are 90mm (not comprising internal screw thread); Thread spacing P is 100mm.
As shown in Figure 2, be provided with groove 5 on metal hollow drilling rod 4, polymer liner pipe 2 is provided with protruding wedge 6.Protruding wedge 6 is the protruding wedges of linear pattern on polymer liner pipe 2 outer walls, and its thickness d is 3mm, and width w is 5mm, groove 5 and its coupling.Will be before using with the polymer liner pipe 2 of the internal screw thread metal hollow drilling rod 4 of packing into, after groove 5 and protruding wedge 6 down closed, the axial location of drilling rod and bushing pipe promptly was fixed, and can not freely rotate.After probing is finished bushing pipe is taken out from drilling rod, can obtain rock core.
Fig. 3 is thread and wall thickness dimension enlarged diagram.The cross section of external screw teeth is trapezoidal, and external screw teeth height H 1 is 15mm, and thickness at root of tooth L1 is 5mm, and addendum thickness A1 is 2mm.Drill pipe thickness S1 is 8mm.Internal screw thread cross section on the polymer liner pipe also is trapezoidal, and bushing pipe wall thickness S2 is 5mm.Trapezoidal thread height H 2 is 5mm, and thickness at root of tooth L2 is 3mm, and addendum thickness A2 is 1mm.
Use the preceding metal hollow drilling rod 4 of earlier polymer liner pipe 2 being packed into, cooperate the drill bit probing, after probing is finished polymer liner pipe 2 is taken out from metal hollow drilling rod 4, can obtain rock core.
The present invention is suitable for the boring coring of all kinds of incompetent beds, as deposit, soil, frozen soil, ice, is particularly suitable for sedimental boring coring.
Claims (6)
1. a double-thread hollow coring drill rod that is applicable to soil and soft-sediment is characterized in that, it mainly is made up of internal screw thread (1), polymer liner pipe (2), metal external screw teeth (3) and metal hollow drilling rod (4).Described metal external screw teeth (3) is at metal hollow drilling rod (4) external surface, and internal screw thread (1) is at polymer liner pipe (2) inner surface, and metal hollow drilling rod (4) is connected with protruding wedge (6) by groove (5) with polymer liner pipe (2).
2. double-thread hollow coring drill rod as claimed in claim 1 is characterized in that, the internal diameter of described metal hollow drilling rod (4) is 50～200 millimeters, 5～20 millimeters of wall thickness.
3. double-thread hollow coring drill rod as claimed in claim 1, it is characterized in that, the cross section of described metal external screw teeth (3) is trapezoidal or triangle, it highly is 5～20% of metal hollow drilling rod (4) internal diameter, the root width is 10～30% of a height, and the pitch of metal external screw teeth (3) is 0.5～2.5 times of metal hollow drilling rod (4) external diameter.
4. double-thread hollow coring drill rod as claimed in claim 1, it is characterized in that, described polymer liner pipe (2) is made by engineering plastics, organic glass or polytetrafluoroethylene (PTFE) injection mo(u)lding, 3～8 millimeters of wall thickness, internal screw thread (1) is opposite with metal external screw teeth (3) rotation direction, pitch is identical, and internal screw thread (1) cross section is a rectangle or trapezoidal, highly is 5～10% of polymer liner pipe (2) internal diameter.
5. double-thread hollow coring drill rod as claimed in claim 1 is characterized in that, described groove (5) is the linear pattern groove on metal hollow drilling rod (4) inwall, and the degree of depth and width are 1～5 millimeter.
6. double-thread hollow coring drill rod as claimed in claim 1 is characterized in that, described protruding wedge (6) is the protruding wedge of linear pattern on polymer liner pipe (2) outer wall, its degree of depth and width and groove (5) coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100964059A CN101503949B (en) | 2009-03-02 | 2009-03-02 | Double-thread hollow coring drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100964059A CN101503949B (en) | 2009-03-02 | 2009-03-02 | Double-thread hollow coring drill rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101503949A true CN101503949A (en) | 2009-08-12 |
| CN101503949B CN101503949B (en) | 2011-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100964059A Expired - Fee Related CN101503949B (en) | 2009-03-02 | 2009-03-02 | Double-thread hollow coring drill rod |
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| Country | Link |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425378A (en) * | 2011-11-17 | 2012-04-25 | 杭州电子科技大学 | Threaded drill bit with sliding chutes |
| CN103696682A (en) * | 2013-12-04 | 2014-04-02 | 宁波利豪机械有限公司 | Bidirectional rotating ground drill |
| CN105401881A (en) * | 2015-12-02 | 2016-03-16 | 国家电网公司 | Drilling machine for frozen earth for vertically burying electric pole |
| CN107075923A (en) * | 2014-07-18 | 2017-08-18 | Bly 知识产权公司 | Drilling rod with inner projection |
| CN112413388A (en) * | 2019-08-20 | 2021-02-26 | 刘大银 | Composite screw |
-
2009
- 2009-03-02 CN CN2009100964059A patent/CN101503949B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425378A (en) * | 2011-11-17 | 2012-04-25 | 杭州电子科技大学 | Threaded drill bit with sliding chutes |
| CN103696682A (en) * | 2013-12-04 | 2014-04-02 | 宁波利豪机械有限公司 | Bidirectional rotating ground drill |
| CN103696682B (en) * | 2013-12-04 | 2015-11-18 | 宁波利豪机械有限公司 | A kind of double rotational directions ground boring device |
| CN107075923A (en) * | 2014-07-18 | 2017-08-18 | Bly 知识产权公司 | Drilling rod with inner projection |
| CN107075923B (en) * | 2014-07-18 | 2019-03-29 | Bly 知识产权公司 | Drilling rod with inner projection |
| US10626681B2 (en) | 2014-07-18 | 2020-04-21 | Bly Ip Inc. | Drill rod having internally projecting portions |
| CN105401881A (en) * | 2015-12-02 | 2016-03-16 | 国家电网公司 | Drilling machine for frozen earth for vertically burying electric pole |
| CN112413388A (en) * | 2019-08-20 | 2021-02-26 | 刘大银 | Composite screw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101503949B (en) | 2011-06-01 |
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