CN202273607U - Soil-free threaded drill rod - Google Patents
Soil-free threaded drill rod Download PDFInfo
- Publication number
- CN202273607U CN202273607U CN2011203899001U CN201120389900U CN202273607U CN 202273607 U CN202273607 U CN 202273607U CN 2011203899001 U CN2011203899001 U CN 2011203899001U CN 201120389900 U CN201120389900 U CN 201120389900U CN 202273607 U CN202273607 U CN 202273607U
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- China
- Prior art keywords
- threaded
- screw thread
- unearthed
- rod
- section
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- Expired - Lifetime
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Abstract
The utility model discloses a soil-free threaded drill rod, which comprises a drill bit, a threaded rod and a transmission rod. The threaded rod is formed by a thread at the lower half portion and a thread flattening section at the upper half portion, wherein the main body of the threaded flattening section is in a shape of a cylinder with the bottom sealed, and the diameter of the threaded flattening section is the same as the maximum diameter of the section of the thread. The threaded rod is respectively connected with the drill bit and the transmission rod through square connectors, and the axial freedom of the threaded rod is limited by pins. The soil-free threaded rod can punch half-threaded piles without soil, thereby avoiding cleaning soil on the drill rod and on site in construction, improving work efficiency, improving work environment, reducing pile pulling force and reducing construction difficulties. Theoretically, the pile pulling force only comprises gravity of the drill rod and friction of the lateral wall of pile holes.
Description
Technical field
The utility model relates to the realm of building construction, particularly relates to the unearthed threaded drillpipe of a kind of nothing.
Background technology
Often need the basis of piling as building in the realm of building construction, there have a kind of half-thread stake to use to be comparatively extensive, and its bottom is a screw thread, and top is polished rod, and bottom thread can improve the anti-pressure ability of stake, and the top polished rod can bear bending resistance and resistance to compression load.
General at present use drilling rod is got this half-thread stake, and the drilling rod bottom is drill bit and threaded rod, and top is drive link, and its diameter is not more than the core diameter of thread.Only keep bottom thread during piling, the top screw thread is destroyed, and earth is extracted.Boring procedure is: after getting into certain depth, drilling rod is rotated further but stops axially-movable, and the screw thread of formation is thoroughly destroyed, and this process can be carried out several times; Then drilling rod continues by the hand of spiral rotation and the formation screw thread that axially moves, reach drilling depth after, the reverse acting spiral rotation is withdrawed from gradually, forms bottom thread; After drilling rod fell back on certain depth, drilling rod stopped operating, and directly moved up and took earth out of along axis, formed top polished rod part.
There is the problem of being unearthed when using above-mentioned drilling rod to play the half-thread stake, needs cleaning drilling rod and on-the-spot earth in the work progress, cause operating efficiency not high.In addition, when boring bottom thread, because rod rotation speed and axial feed are difficult for coupling, bottom earth is upwards extruded, and the screw thread that top is destroyed is compacted, and the pile pulling power when causing drilling rod directly to be extracted is excessive, brings difficulty to construction.
The utility model content
The purpose of the utility model is in order to overcome the deficiency of above-mentioned background technology, and a kind of nothing threaded drillpipe that is unearthed is provided, and can realize not having the unearthed half-thread stake operation of beating; Avoid cleaning drilling rod and on-the-spot earth in the work progress; Increase work efficiency, improve working environment, reduce pile pulling power; Pile pulling power in theory has only the frictional force of gravity and the drilling rod and the stake hole sidewall of drilling rod, has reduced difficulty of construction.
The nothing that the utility model the provides threaded drillpipe that is unearthed; Comprise drill bit, threaded rod and drive link; Said threaded rod flattens section by screw thread that is positioned at Lower Half and the screw thread that is positioned at the first half and constitutes, and the main body that said screw thread flattens section is the cylindric of bottom seals, and its diameter is identical with the maximum gauge of thread cross-section; All be connected between said threaded rod and drill bit, the drive link, and cooperate pin to limit its axial freedom through square knuckle.
In technique scheme, the top of said screw thread pressing section is tapered.
In technique scheme, the bottom of said screw thread pressing section is provided with along hand of spiral radius and becomes big inclined-plane gradually.
In technique scheme; Said drive link upper end is connected with the unit head that is used to provide moment of torsion and axial load; Unit head is provided with spline and along the fixture block of drilling rod radial expansion, drive link is provided with spline and axially loads draw-in groove, respectively with unit head on spline and fixture block be complementary.
In technique scheme, said drive link is provided with multistage.
In technique scheme, said square knuckle is six square joints or all directions joint.
In technique scheme, said screw thread flattens section and screw thread is an independent accessory.
In technique scheme, said threaded rod is integrated.
Compared with prior art, the advantage of the utility model is following:
(1) the utility model can be realized not having being unearthed and play half-thread stake operation, avoids cleaning drilling rod and on-the-spot earth in the work progress, increases work efficiency, and improves working environment.
(2) the utility model has reduced pile pulling power, and pile pulling power in theory has only the frictional force of gravity and the drilling rod and the stake hole sidewall of drilling rod, has reduced difficulty of construction.
Description of drawings
Fig. 1 is the structural representation that the utility model embodiment does not have unearthed threaded drillpipe;
Fig. 2 is the A place enlarged drawing of Fig. 1;
Fig. 3 is the C-C sectional view of Fig. 1;
Fig. 4 is the B-B sectional view of Fig. 1.
Among the figure: the 1-drive link, the 2-threaded rod, the 3-drill bit, the 4-screw thread, the 5-screw thread flattens section, the 6-pin, 7-spline, 8-axially load draw-in groove, the 9-square knuckle.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to describe in detail.
Referring to shown in Figure 1; The nothing that the utility model embodiment the provides threaded drillpipe that is unearthed; Comprise drill bit 3, threaded rod 2 and drive link 1; Threaded rod 2 flattens section 5 by screw thread that is positioned at Lower Half 4 and the screw thread that is positioned at the first half and constitutes, and the main body that screw thread flattens section 5 is the cylindric of bottom seals, and its diameter is identical with the maximum gauge of screw thread 4 cross sections.The top of screw thread pressing section 5 is tapered, and the bottom is provided with along hand of spiral radius and becomes big inclined-plane gradually.Screw thread flattens section 5 can be independent accessory with screw thread 4, and perhaps whole threaded rod 2 is integrated.
All be connected between threaded rod 2 and drill bit 3, the drive link 1, and cooperate pin 6 to limit its axial freedom through square knuckle 9.Square knuckle 9 is preferably six square joints or all directions joint.Drive link 1 upper end is connected with the unit head that is used to provide moment of torsion and axial load, and unit head is provided with spline and along the fixture block of drilling rod radial expansion, drive link 1 is provided with spline 7 and axially loads draw-in groove 8, respectively with unit head on spline and fixture block be complementary.Spline 7 on the drive link 1 matches transfer torque with the spline on the unit head.When the fixture block on the unit head stretches out, snap in the axial loading draw-in groove 8 on the drive link 1, realize axially loading; When the fixture block on the unit head was withdrawn, unit head can axially move on drive link 1 along the spline on the drive link 17.Drive link 1 can be provided with multistage according to actual needs.
Step when the nothing of employing the utility model embodiment is unearthed threaded drillpipe piling is following:
Adopt to be threaded on the threaded rod to flatten the drilling rod that has axial loading groove on section, the drive link, the main body that screw thread flattens section is the cylindric of bottom seals, and its diameter is identical with the maximum gauge of thread cross-section; The fixture block of unit head upper edge drilling rod radial expansion is stretched out; Snap in the axial loading groove of drive link, realize axially loading, drive piles with spiral form; Screw thread is formed at drill bit and threaded rod bottom; Simultaneously screw thread flattens section and becomes big inclined-plane through its underpart gradually along the radius of hand of spiral setting, and the screw thread that forms is progressively flattened, and forms the polished rod part of stake; After the projected depth of driving piles, drilling rod oppositely withdraws from the bottom thread part along the hand of spiral, and drilling rod directly axially withdraws from then, thereby realizes not having the piling work of being unearthed.
The principle of the utility model embodiment is set forth as follows:
Among the utility model embodiment; The drill bit 3 that does not have the threaded drillpipe that is unearthed is mainly used in core diameter of thread soil auger pine, and squeezes out guide's screw thread, and threaded rod 2 bottoms are continued extruding and formed screw thread; The screw thread on top flattens section 5 and is used for the screw thread that forms is flattened, and forms the polished rod part on half-thread stake top.The bottom of screw thread pressing section 5 is provided with along hand of spiral radius and becomes big inclined-plane gradually, so that the screw thread that forms is progressively flattened.The top that screw thread flattens section 5 is set as the conical surface, and resistance reduces in the time of can making pile pulling.Dwang is used for the transmission of moment of torsion and axial load, can connect multistage as required.
During work, do not have the threaded drillpipe of being unearthed and drive piles with spiral form, drill bit 3 forms screw thread with threaded rod 2 bottoms, and screw thread flattens section 5 and the threaded portion that forms flattened the polished rod part that forms stake.After the degree of depth of stake arrives, oppositely withdraw from the bottom thread part, drilling rod can directly axially withdraw from then, thereby realizes no native piling work.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from the spirit and the scope of the utility model.Like this, belong within the scope of the utility model claim and equivalent technologies thereof if these of the utility model are revised with modification, then the utility model also is intended to comprise these changes and modification interior.
The content of not doing in this manual to describe in detail belongs to this area professional and technical personnel's known prior art.
Claims (8)
1. one kind is not had the threaded drillpipe of being unearthed; Comprise drill bit (3), threaded rod (2) and drive link (1); It is characterized in that: said threaded rod (2) flattens section (5) by screw thread that is positioned at Lower Half (4) and the screw thread that is positioned at the first half and constitutes; The main body that said screw thread flattens section (5) is the cylindric of bottom seals; Its diameter is identical with the maximum gauge of screw thread (4) cross section, all is connected through square knuckle (9) between said threaded rod (2) and drill bit (3), the drive link (1), and cooperates pin (6) to limit its axial freedom.
2. the nothing as claimed in claim 1 threaded drillpipe that is unearthed is characterized in that: it is tapered that said screw thread flattens the top of section (5).
3. the nothing as claimed in claim 1 threaded drillpipe that is unearthed is characterized in that: the bottom that said screw thread flattens section (5) is provided with along hand of spiral radius and becomes big inclined-plane gradually.
4. like claim 1 or the unearthed threaded drillpipe of 2 or 3 described nothings; It is characterized in that: said drive link (1) upper end is connected with the unit head that is used to provide moment of torsion and axial load; Unit head is provided with spline and along the fixture block of drilling rod radial expansion; Drive link (1) is provided with spline (7) and axially loads draw-in groove (8), respectively with unit head on spline and fixture block be complementary.
5. the nothing as claimed in claim 4 threaded drillpipe that is unearthed, it is characterized in that: said drive link (1) is provided with multistage.
6. like claim 1 or the unearthed threaded drillpipe of 2 or 3 described nothings, it is characterized in that: said square knuckle (9) is six square joints or all directions joints.
7. like claim 1 or the unearthed threaded drillpipe of 2 or 3 described nothings, it is characterized in that: said screw thread flattens section (5) and screw thread (4) is independent accessory.
8. like claim 1 or the unearthed threaded drillpipe of 2 or 3 described nothings, it is characterized in that: said threaded rod (2) is integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203899001U CN202273607U (en) | 2011-10-14 | 2011-10-14 | Soil-free threaded drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203899001U CN202273607U (en) | 2011-10-14 | 2011-10-14 | Soil-free threaded drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202273607U true CN202273607U (en) | 2012-06-13 |
Family
ID=46193971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203899001U Expired - Lifetime CN202273607U (en) | 2011-10-14 | 2011-10-14 | Soil-free threaded drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202273607U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392611A (en) * | 2011-10-14 | 2012-03-28 | 武汉武船机电设备有限责任公司 | Threaded drill pipe without bringing out soil and pilling method without bringing out soil for simultaneously forming thread and smooth rod |
| CN104563911A (en) * | 2014-12-17 | 2015-04-29 | 贺德新 | Drill rod for expanded-base threaded pile construction |
-
2011
- 2011-10-14 CN CN2011203899001U patent/CN202273607U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392611A (en) * | 2011-10-14 | 2012-03-28 | 武汉武船机电设备有限责任公司 | Threaded drill pipe without bringing out soil and pilling method without bringing out soil for simultaneously forming thread and smooth rod |
| CN104563911A (en) * | 2014-12-17 | 2015-04-29 | 贺德新 | Drill rod for expanded-base threaded pile construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120613 |
|
| CX01 | Expiry of patent term |