CN201567966U - Safety device capable of preventing drills of rotary drilling rigs against falling into pile holes - Google Patents
Safety device capable of preventing drills of rotary drilling rigs against falling into pile holes Download PDFInfo
- Publication number
- CN201567966U CN201567966U CN2009202508357U CN200920250835U CN201567966U CN 201567966 U CN201567966 U CN 201567966U CN 2009202508357 U CN2009202508357 U CN 2009202508357U CN 200920250835 U CN200920250835 U CN 200920250835U CN 201567966 U CN201567966 U CN 201567966U
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- steel pipe
- hole
- bottom steel
- pulling shaft
- square toes
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Abstract
The utility model discloses a safety device capable of preventing drills of rotary drilling rigs against falling into pile holes, which is provided with an innermost rod section and a square head, wherein the innermost rod section is arranged on the innermost layer of a drill pipe of a rotary drilling rig, the square head is connected to the lower end of the innermost rod section, the innermost rod section consists of an upper steel pipe and a lower steel pipe, and the thickness of the lower steel pipe is larger than that of the upper steel pipe. Besides, the length of the lower steel pipe is within a range upwards extending 6m from the butt welding seam of the lower steel pipe and the square head, a penetrating hole coaxial with the lower steel pipe is formed on the square head axially, and the innermost rod section and the square head are firmly connected by pull shaft structures which are arranged in the lower steel pipe and the penetrating hole and hinged with the lower steel pipe and the square head. The safety device is simple in structure and convenient for installation and use and increases torsion, pressure and bending resistant mechanical strength at the worst positions of the drill pipe with the highest load. Further, by aid of a pull rod arranged in the steel pipes of the inner most rod section, the safety device effectively avoids accidents caused by drills falling into pile holes after the steel pipes or the square head are broken or in open welding.
Description
Technical field
The utility model relates to a kind of rotary drilling rig drilling rod, particularly relates to a kind of safety locking motion that the drilling tool that prevents rotary drilling rig falls into a hole that has.
Background technology
The rotary drilling rig drilling rod is that revolving of sending of rotary digging drill power head dug the workpiece that moment of torsion and plus-pressure pass to drilling tool.Its structure, operating principle and the course of work are:
Structure: as shown in Figure 1, the drilling rod assembly forms (as telescopic antenna) by more piece drilling rod suit, and its every joint drilling rod all is welded in internal key formations such as (except the interior poles) on each pole bottom pipe diameter by seamless steel pipe, the elongated external key that is welded on outer diameter of steel pipes and dress.
Operating principle: as shown in Figure 1, the homalocephalus that rotary drilling rig is welded in interior pole upper end by master winch-wire rope-elevator-dress is lifting internal segment drilling rod, and internal segment drilling rod the outer bar of each joint by plectane-spring-flowing water pan arrest mounted thereto again.Drilling rod (first pole) passes the internal key cover of rotary digging drill power head and is installed on the main frame.
The course of work: as shown in Figure 1, the internal key of rotary drilling rig by unit head internal key cover will revolve and dig moment of torsion and plus-pressure passes to outermost pole 12 by the external key that dress is welded on the outermost pole 12 (first segment drilling rod); Outermost pole 12 passes to second pole by the internal key that dress is welded on its bottom pole again; So, ecto-entad transmits by joint, is delivered to interior pole 1 at last and passes to drilling tool by interior pole 1.
The rotary drilling rig master winch is put (steel wire) rope during the rotary digging drilling hole operation, drilling rod and the drilling tool that is installed in its internal segment drilling rod lower end are transferred to the hole at the bottom of.Put bar and be by each pole and be installed in interior pole lower end drilling tool deadweight from outside to inside pole put down (stretching out) by joint.
In the construction operation process, no matter drilling tool is executed brill (promptly no matter drilling rod stretches out several joints) in any hole depth, and as shown in Figure 1, the L section that is exposed at the interior pole of other outer pole outside is being born moment of torsion and the stressed effect of digging of revolving all the time.Because the instability of stratum, geological condition, the factor such as irregular of boring drilling depth operation causes drilling rod to bear the strong fluctuating load of non-rule.The other parts of the normal Intensity Design of steel pipe that constitute the interior pole of L section have: (1) steel pipe is twisted easily or twists off; (2) welded seam of itself and square toes 2 ftractures easily; (3) square toes 2 are twisted off at the B place easily.
All can cause drilling tool to fall in the hole if any one takes place above 3 accidents, salvage untimelyly, underground drilling accident just takes place, bring about great losses to the user.
Summary of the invention
Technical problem to be solved in the utility model is, provides a kind of simple in structure, has the safety locking motion that the drilling tool that prevents rotary drilling rig falls into a hole.
The technical scheme that the utility model adopted is: a kind of have a safety locking motion that the drilling tool that prevents rotary drilling rig falls into a hole, include: the interior pole and the square toes that are connected interior pole lower end that are arranged at the rotary drill rod innermost layer, constitute the steel pipe of interior pole and be made up of top steel pipe and bottom steel pipe, the wall thickness of described bottom steel pipe is greater than the wall thickness of top steel pipe.
The length of described bottom steel pipe is for upwards prolonging 6 meters scope from the butt weld of bottom steel pipe and square toes.
Described square head shaft is provided with interior pole and the firm pulling shaft structure that is hinged bottom steel pipe and square toes that links together of square toes in the steel pipe of described bottom He in the through hole to being formed with the through hole coaxial with the bottom steel pipe.
Described pulling shaft structure includes: the step that is formed on steel pipe upper end, bottom, be integrally formed in the interior limiting block of through hole of square toes with intercommunicating pore, baffle plate and pulling shaft with centre bore, the lower end of described pulling shaft runs through the intercommunicating pore of limiting block and is close on limiting block by nut, the upper end of described pulling shaft is positioned at the step place of bottom steel pipe, and by running through behind its centre hole again by the step place of nut screwing clamping at the bottom steel pipe.
Described pulling shaft structure includes: the step that is formed on steel pipe upper end, bottom, be integrally formed in the interior limiting block of through hole of square toes with intercommunicating pore, baffle plate and pulling shaft with centre bore, the lower end of described pulling shaft runs through the intercommunicating pore of limiting block and is fixed on the limiting block by the shaft shoulder that is integrally formed in this termination, the upper end of described pulling shaft is positioned at the step place of bottom steel pipe, and by running through behind its centre hole again by the step place of nut screwing clamping at the bottom steel pipe.
The described limiting block that is formed in the through hole is divided into top through hole and bottom through hole with through hole.
Of the present utility model have a safety locking motion that the drilling tool that prevents rotary drilling rig falls into a hole, simple in structure, be convenient to install and use, by increasing the wall thickness of interior pole bottom steel pipe, be subjected to the load maximum at drilling rod, worst position has improved that it is antitorque, the mechanical strength of resistance to compression, bending resistance, and is increased in the steel pipe of interior pole pull bar is set, and has effectively avoided owing to steel pipe or square toes cause drilling tool to fall into the accident that cause in a hole after twisting off, snapping.Also improved the application life of production efficiency and rotary drill rod.
Description of drawings
Fig. 1 is the structural representation of the rotary drill rod of prior art;
Fig. 2 is the structural representation of rotary drill rod of the present utility model;
Fig. 3 is the structural representation of safety locking motion first embodiment of the present invention;
Fig. 4 is the structural representation of safety locking motion second embodiment of the present invention.
Wherein:
1: interior pole 2: square toes
3: top steel pipe 4: the bottom steel pipe
5: step 6: through hole
7: limiting block 8: baffle plate
9: pulling shaft 10: nut
11: nut 12: the outermost layer pole
13: flowing water dish 14: the drilling rod spring
15: plectane 16: bearing pin
17: drilling tool 19: each pole internal key
20: square toes 21: pulling shaft
22: the shaft shoulder
A: the butt weld of interior pole steel pipe and square toes
B: square toes easy fracture place
C: the lower surface of each pole outside the interior pole
D: the pad of top steel pipe and bottom steel pipe
The specific embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further specify and of the present utility modelly have the safety locking motion that the drilling tool that prevents rotary drilling rig falls into a hole and how to realize.
As Fig. 2, shown in Figure 3, of the present utility model have a safety locking motion that the drilling tool that prevents rotary drilling rig falls into a hole, include: the interior pole 1 and the square toes 2 that are connected interior pole 1 lower end that are arranged at the rotary drill rod innermost layer, the steel pipe of pole 1 is made up of top steel pipe 3 and bottom steel pipe 4 in constituting, and the wall thickness of described bottom steel pipe 4 is greater than the wall thickness of top steel pipe 3.The length of described bottom steel pipe 4 is for upwards prolong 6 meters scope from bottom steel pipe 4 and the butt weld A of square toes 2, at the steel pipe of these 6 meters long scopes employings than former thickness of steel pipe increase, and, resistance to compression antitorque, bending resistance equal strength to increase.
Described square toes 2 axially are formed with the through hole 6 coaxial with bottom steel pipe 4, are provided with the pulling shaft structure that is hinged bottom steel pipe 4 and square toes 2 that interior pole 1 and square toes 2 are linked together securely in described bottom steel pipe 4 and in the through hole 6.Described pulling shaft structure can prevent owing to the fracture of the weld cracking of steel pipe and square toes or square toes causes drilling tool to fall into the generation of the fault in a hole.
Described pulling shaft structure includes: the step 5 that is formed on bottom steel pipe 4 upper ends, be integrally formed in the limiting block with intercommunicating pore 7 in the through hole 6 of square toes 2, baffle plate 8 and pulling shaft 9 with centre bore, the lower end of described pulling shaft 9 runs through the intercommunicating pore of limiting block 7 and is fixed on the limiting block 7 by nut 10, the upper end of described pulling shaft 9 is positioned at step 5 places of bottom steel pipe 4, and by fix on step 5 places of bottom steel pipe 4 behind the centre bore that runs through baffle plate 8 more together by nut 11 tensions.Like this, even the weld seam of bottom steel pipe 4 and square toes 2 snaps or square toes are twisted off, ftracture, the drilling tool that is connected on the square toes 2 also can be lived square toes 2 bands by the pulling shaft structure, makes drilling tool can not fall into the hole and causes the accident.
The described limiting block 7 that is formed in the through hole 6 is divided into top through hole and bottom through hole with through hole 6.
As shown in Figure 4, described pulling shaft structure can also be to include: the step 5 that is formed on bottom steel pipe 4 upper ends, be integrally formed in the limiting block with intercommunicating pore 7 in the through hole 6 of square toes 2, baffle plate 8 and pulling shaft 21 with centre bore, the lower end of described pulling shaft 21 runs through the intercommunicating pore of limiting block 7 and is close on limiting block 7 by the shaft shoulder 22 of a bodily form in this termination, the upper end of described pulling shaft 21 is positioned at step 5 places of bottom steel pipe 4, and by be tightened in step 5 places of bottom steel pipe 4 behind the centre bore that runs through baffle plate 8 again by nut 11.
Of the present utility model have a safety locking motion that the drilling tool that prevents rotary drilling rig falls into a hole, before dress weldering drilling rod, this safety locking motion of dress weldering earlier, be that (see figure 3) is docked bottom steel pipe 4 and square toes 2 earlier and welded at A place, nut 10 and packing ring are screwed on the lower end of pulling shaft 9, afterwards the upper end of pulling shaft 9 is passed the step 5 that square toes 2 interior limiting blocks 7 extend into bottom steel pipe 4 from the lower end of square toes 2, again the upper end of pulling shaft 9 is passed the centre bore of baffle plate 8, with nut 11 pulling shaft 9 is tightened, and made baffle plate 8 be stuck in step 5 places of bottom steel pipe 4.Afterwards with the steel pipe welding on D place and this pole of mounted this safety locking motion.Then, other component that weld this pole by normal dress weldering program dress again get final product.
Claims (6)
1. one kind has the safety locking motion that the drilling tool that prevents rotary drilling rig falls into a hole, include: be arranged at the interior pole (1) of rotary drill rod innermost layer and be connected the square toes (2) of interior pole (1) lower end, it is characterized in that, the steel pipe that constitutes interior pole (1) is made up of top steel pipe (3) and bottom steel pipe (4), and the wall thickness of described bottom steel pipe (4) is greater than the wall thickness of top steel pipe (3).
2. according to claim 1 have a safety locking motion that the drilling tool that prevents rotary drilling rig falls into a hole, it is characterized in that the length of described bottom steel pipe (4) upwards prolongs 6 meters scope for the butt weld (A) from bottom steel pipe (4) and square toes (2).
3. according to claim 1 have a safety locking motion that the drilling tool that prevents rotary drilling rig falls into a hole, it is characterized in that, described square toes (2) axially are formed with the through hole (6) coaxial with bottom steel pipe (4), are provided with in described bottom steel pipe (4) and in the through hole (6) interior pole (1) and the firm pulling shaft structure that is hinged bottom steel pipe (4) and square toes (2) that links together of square toes (2).
4. according to claim 2 have a safety locking motion that the drilling tool that prevents rotary drilling rig falls into a hole, it is characterized in that, described pulling shaft structure includes: the step (5) that is formed on bottom steel pipe (4) upper end, be integrally formed in the interior limiting block with intercommunicating pore (7) of through hole (6) of square toes (2), baffle plate (8) and pulling shaft (9) with centre bore, the lower end of described pulling shaft (9) runs through the intercommunicating pore of limiting block (7) and is close on limiting block (7) by nut (10), the upper end of described pulling shaft (9) is positioned at the step (5) of bottom steel pipe (4) to be located, and locates by the step (5) that is tightened in bottom steel pipe (4) by nut (11) again behind the centre bore that runs through baffle plate (8).
5. according to claim 2 have a safety locking motion that the drilling tool that prevents rotary drilling rig falls into a hole, it is characterized in that, described pulling shaft structure includes: the step (5) that is formed on bottom steel pipe (4) upper end, be integrally formed in the interior limiting block with intercommunicating pore (7) of through hole (6) of square toes (2), baffle plate (8) and pulling shaft (21) with centre bore, the lower end of described pulling shaft (21) runs through the intercommunicating pore of limiting block (7) and is fixed on the limiting block (7) by the shaft shoulder (22) that is integrally formed in this termination, the upper end of described pulling shaft (21) is positioned at the step (5) of bottom steel pipe (4) to be located, and locates by the step (5) that is tightened in bottom steel pipe (4) by nut (11) again behind the centre bore that runs through baffle plate (8).
6. according to claim 4 have a safety locking motion that the drilling tool that prevents rotary drilling rig falls into a hole, it is characterized in that, the described limiting block (7) that is formed in the through hole (6) is divided into top through hole and bottom through hole with through hole (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202508357U CN201567966U (en) | 2009-11-25 | 2009-11-25 | Safety device capable of preventing drills of rotary drilling rigs against falling into pile holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202508357U CN201567966U (en) | 2009-11-25 | 2009-11-25 | Safety device capable of preventing drills of rotary drilling rigs against falling into pile holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201567966U true CN201567966U (en) | 2010-09-01 |
Family
ID=42660253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202508357U Expired - Fee Related CN201567966U (en) | 2009-11-25 | 2009-11-25 | Safety device capable of preventing drills of rotary drilling rigs against falling into pile holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201567966U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061681A (en) * | 2012-12-26 | 2013-04-24 | 上海中联重科桩工机械有限公司 | Drill rod for rotary drilling rig and rotary drilling rig |
| CN105257223A (en) * | 2015-11-24 | 2016-01-20 | 佛山煦宸工程机械有限公司 | Drill rod for rotary drilling rig |
-
2009
- 2009-11-25 CN CN2009202508357U patent/CN201567966U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061681A (en) * | 2012-12-26 | 2013-04-24 | 上海中联重科桩工机械有限公司 | Drill rod for rotary drilling rig and rotary drilling rig |
| CN105257223A (en) * | 2015-11-24 | 2016-01-20 | 佛山煦宸工程机械有限公司 | Drill rod for rotary drilling rig |
| CN105257223B (en) * | 2015-11-24 | 2017-12-05 | 佛山煦宸工程机械有限公司 | A kind of drilling rod for rotary drilling rig |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20121125 |