CN203412537U

CN203412537U - Rope-core recovery drilling tool

Info

Publication number: CN203412537U
Application number: CN201320444399.3U
Authority: CN
Inventors: 李国民; 钱书伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-24
Filing date: 2013-07-24
Publication date: 2014-01-29
Anticipated expiration: 2023-07-24

Abstract

The utility model discloses a rope-core recovery drilling tool. The rope-core recovery drilling tool comprises an outer pipe assembly and an inner pipe assembly, wherein the outer pipe assembly is internally provided with a reamer (23), and the inner pipe assembly is internally provided with an inner pipe (14) and a third-layer rock-core pipe (15). The rope-core recovery drilling tool is characterized in that the lower end of the reamer (23) in the outer pipe assembly is connected with an external joint (16), and the lower end of the external joint (16) is connected with an external drilling bit (19); the lower end of the inner pipe (14) of the inner pipe assembly is connected with an inner drilling bit (20), and the inner drilling bit (20) protrudes forwards relative to the external drilling bit (19); an internal drilling bit and the external drilling bit are spliced in a splined manner, and the internal drilling bit can fish along with the inner pipe assembly; the lower part of the inner side of the third-layer rock-core pipe (15) is provided with a clamping spring seat (18) and a clamping spring; the outer side of the third-layer rock-core pipe (15) is provided with a blocking spring (17). The rope-coring drilling tool disclosed by the utility model has the technical effects that for complex formations such as fracture development, hard-brittle-crisp materials and soft-hard interbedding, the service life of the drilling bits can be prolonged to greatest extent, the drill lifting spacing is expanded and rock-core recovery rate is high and the like.

Description

A kind of cord coring drill

Technical field

The utility model relates to drilling project field, particularly a kind of cord coring drill that is applied to the bad grounds such as cranny development, hard friability, interbedding of soft and hard rocks.

Background technology

Cord coring drill is that a kind of drill bit and drilling tool can not carried is from the boring tool of removal of core at the bottom of hole, be widely used at present, in the middle of domestic and international Solid Mineral core drilling construction, having the advantages such as drilling time is long, labour intensity is low, probing quality is high, drilling accident is few, drilling cost is low.

Conventional cord coring drill is comprised of outer pipe assembly and inner tube assembly, be combined be referred to as two-tube, outer pipe assembly comprises and plays block head, bullet card chamber, reamer and drill bit, inner tube assembly comprise drag for spearhead, play clamp, inner tube, jump ring, governor motion, hitch, single action mechanism, the mechanism etc. that notifies of mechanism, core plugging that notifies puts in place.While drilling work, inner tube assembly can be transferred with outer pipe assembly, also can in cord drill-rod, transfer separately.In drilling process, available wire rope is lowered to fisher, and the inner tube that is full of rock core is salvaged, thereby realize not carrying boring, salvages rock core, has effectively saved probing non-cutting time.

But for conventional cord coring drill; when running into the bad grounds such as hard friability, interbedding of soft and hard rocks; the working environment of drill bit is very severe; under the condition of work of this complexity, it is too fast that drill bit consumes, and drilling tool rate of penetration is slow, carry that to bore interval shorter; in addition; because conventional cord coring drill lacks the mechanism of protection rock core, make broken sample easily by erosion with easily come off, reduced core recovery percentage.Easily cause boring to be scrapped.

Therefore; how a kind of cord coring drill is provided; make it when being applied to the bad grounds such as hard friability, interbedding of soft and hard rocks; can guarantee that rate of penetration is fast, carry brill interval long, bit part is durable; it is convenient to change; and can protect the rock core difficult drop-off that extracts to lose, thereby improve core recovery percentage, be the technical problem of the required solution in this area.

Utility model content

The purpose of this utility model is to provide a kind of cord coring drill, and it is durable that this drilling tool can reach bit part when the bad grounds such as reply cranny development, hard friability, interbedding of soft and hard rocks, and it is convenient to change, core recovery percentage high-technology effect.

For achieving the above object, the utility model provides a kind of cord coring drill, comprises outer pipe assembly, inner tube assembly; In described outer pipe assembly, be provided with reamer, it is characterized in that, the reamer lower end in described outer pipe assembly connects additional joint, and described additional joint lower end is connected with outer drill bit; Drill bit in the inner tube lower end of described inner tube assembly connects, described interior drill bit protrudes forward with respect to outer drill bit.

Alternatively, described inner tube inner side is provided with the 3rd layer of basket, and described the 3rd layer of basket lower inside is provided with clip spring seat and jump ring, and described the 3rd layer of basket outside is provided with blocks spring.

Alternatively, described inner tube lower end is provided with blocks spring coil, described in block spring coil and block spring described in being fixedly connected with.

Alternatively, described outer drill bit is provided with internal spline; Described interior drill bit is provided with the external splines that can be meshed with described outer drill bit.

Alternatively, on described internal spline, external splines, be equipped with chamfering structure.

Alternatively, the reamer lower end in described outer pipe assembly connects drill headstock, and described drill headstock inner side is fixedly connected with interior drill bit, and described drill headstock outside is fixedly connected with outer drill bit.

Alternatively, the ladder height between described interior drill bit and outer drill bit can regulate by adding, subtract pad.

Alternatively, be provided with sliding axle, slip cap, hanging ring in described inner tube assembly, described hanging ring hangs over the bottom of sliding axle, and described sliding axle is suspended on slip cap, and described slip cap lower end connects the upper end of inner tube.

Alternatively, described sliding axle is provided with " O " RunddichtringO.

Alternatively, described O " RunddichtringO top is provided with spilled water hole.

Cord coring drill provided by the utility model, has following beneficial effect:

Inside and outside two-layer drill bit becomes ladder layout, and interior drill bit plays slotting effect in advance, for outer drill bit is created the scope of freedom, thereby make the relative condition of work of outer drill bit more superior, be not easy to damage, improve rate of penetration, increase the service life, also can play the effect that the anti-rock core of water proof is washed simultaneously; Interior drill bit can be salvaged to earth's surface and change with inner tube assembly, and in realizing, drill bit is not put forward the technical scheme of boring bit change.

Inside and outside basket, realized the integral structure of coring, protect the heart.Basket inner side adopts the jump ring mechanism that cores, to break rock core while running into complete rock core, basket outside is set up and is blocked spring heart protective apparatus structure, while salvaging rock core, make to be hidden in blocking spring spring pawl downwards and drawing in and hold rock core of outside, thereby prevent that broken sample from losing because coming off.

Accompanying drawing explanation

Operating principle structure diagram when Fig. 1 creeps into for cord coring drill that the utility model provides;

Operating principle structure diagram when Fig. 2 salvages for cord coring drill that the utility model provides;

Fig. 3 is the outer drill bit spline automatic guide structure figure with guiding chamfering;

Fig. 4 is the sectional view of outer drill bit A face shown in Fig. 3;

Fig. 5 is the interior drill bit spline automatic guide structure figure with guiding chamfering;

Fig. 6 is the sectional view of interior drill bit A face shown in Fig. 5;

Fig. 7 is that inside and outside drill bit spline intersection is eliminated dike structure chart;

Fig. 8 is split type subland drill structure chart.

In figure:

1. dragging for spearhead 2. plays block head 3. recovery tube 4. bullet card chamber 5-1. tension spring 5-2. bullet clamp 5-3. bullet card holders 6. " " the RunddichtringO 7. hole additional joints 17. of 8. slip cap 9. sliding axle 10. hanging ring 11. outer tube 12. steel ball 13. hole 14. inner tubes 15. the 3rd floor basket 16. blocks interior drill bit 21. drill headstocks 22. of the outer drill bit 20. of spring 18. clip spring seat 19. and block spring abutment 23. reamer 24. holes 25. and block spring coil O

The specific embodiment

In order to make those skilled in the art person understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Embodiment 1

Please refer to drilling tool shown in Fig. 1 left side form of structure, this form of structure provides a kind of interior drill bit not carry to bore bit change to block spring and has protected heart cord coring drill.Drilling tool is comprised of outer pipe assembly and inner tube assembly.

Outer pipe assembly comprises bullet block head 2, bullet card chamber 4, outer tube 11, reamer 23, additional joint 16, outer drill bit 19, its China and foreign countries' drill bit is the internal spline drill bit (as Fig. 3, Fig. 4) with chamfering, and each part mentioned above is connected with screw thread successively according to order from top to bottom.

Inner tube assembly from top to bottom sets gradually and drags for spearhead 1, tension spring 5-1, plays clamp 5-2, recovery tube 3, play card holder 5-3, above-mentioned component combination has formed the bullet mechanism for card in inner tube assembly, during installation, first recovery tube 3 is installed on and plays on card holder 5-3, then tension spring 5-1 and bullet clamp 5-2 packed into recovery tube 3 and play in the groove of card holder 5-3, finally with cylindrical resilient key, fixing.Now pull and drag for spearhead 1, on recovery tube 3, move, make to play clamp 5-2 and shrink, recovery tube moves down, and plays clamp 5-2 and opens.The effect of this bullet mechanism for card is when inner tube assembly is transferred, and plays clamp 5-2 opened with certain angle under the effect of tension spring 5-1, when inner tube assembly reaches bullet card chamber 4, there is the block of bullet head 2 inner tube assembly top, make its vibration up and down, You Danka chamber, both sides 4, makes to play clamp 5-2 and can not continue expansion.

The below that plays card holder 5-3 is provided with sliding axle 9, slip cap 8, hanging ring 10, wherein hanging ring 10 hangs over the bottom of sliding axle 9, sliding axle 9 is suspended on slip cap 8, the upper end of slip cap 8 lower end screwed connection inner tubes 14, and each part mentioned above has formed the basket hitch in inner tube assembly.

Drill bit 20 in inner tube 14 lower end screwed connections, when interior drill bit 20 need to be changed, because it is connected with inner tube, therefore can salvage with inner tube assembly, realize and do not put forward the technical scheme of boring bit change, saved the time of bit change, interior drill bit 20 is that external splines drill bit with chamfering is (as Fig. 5, Fig. 6), this interior drill bit 20 is meshed by spline with the outer drill bit 19 in above-mentioned outer pipe assembly, synchronous revolving fractured rock, in salvaging during drill bit 20, this spline structure can effectively be eliminated the dike (as Fig. 7) producing between inside and outside drill bit, at interior drill bit 20, change complete while again throwing in, in chamfering on interior external splines can guarantee, outer drill bit 20, 19 enter rapidly engagement.

Inner tube 14 inner sides are provided with the 3rd layer of basket 15, between two-layer pipe, are provided with and block spring 17, block spring 17 and can when salvage, expose and block spring spring pawl, prevent that rock core from coming off.Screwed connection place of inner tube 14 and interior drill bit 20 embeds blocks the blocking in spring coil 25 of spring 17 places, blocks that spring coil 25 is double to be made the 3rd layer of basket of righting 15 and fixedly block the effect of spring.The 3rd layer of basket 15 lower inside are provided with clip spring seat 18, which is provided with jump ring, to break rock core while running into complete rock core, thereby reach, core, protect the integrated technique effect of the heart.

During work, in the process of creeping at cord coring drill, inside and outside drill bit 20,19 synchronous revolving fractured rock under the effect of spline, now, block spring and strutted by the 3rd layer of basket 15, hidden in clip spring seat 18 outsides, when salvaging rock core, play on mechanism for card drive sliding axle 9 and move, slip cap is displaced downwardly on the step of hanging ring 10 relatively, and now inner tube 14 and block spring 17 and synchronously fall, exposes spring pawl, spring pawl draws holder in basket lower end, prevents that rock core from coming off.In needs are changed during drill bit 20, because it is arranged in inner tube assembly, thus can salvage with inner tube assembly, without extracting drilling tool is whole, input again after replacing.

Further perfect as to this cord coring drill, on sliding axle 9, be provided with " O " RunddichtringO 6, during pumping, play piston action, accelerate input speed, after inner tube assembly puts in place, drilling rod internal diameter in "O"-ring relative position becomes suddenly large sluicing, and earth's surface pump surge changes indication and throws in the information that puts in place.The swabbing effect of bringing for fear of "O"-ring; can make to expose spilled water hole hole 24 after recovery tube 3 tensions, make to gang up up and down, anti-suction while salvaging on the one hand, rope hang while throwing in to be convenient to send into; can effectively reduce on the other hand surge pressure in well, favourable protection hole wall stable.Similar effect also can be played in the hole 7, the hole 13 that in inner tube assembly, are provided with.

In addition, between the 3rd layer of basket 15 top and hanging ring 10, the mechanism that notifies that puts in place can be set, core plugging alarm mechanism, adjustment structure, single action structure, inner tube protection mechanism etc., as being provided with steel ball 12 below sliding axle 9, when inner tube assembly is transferred to the ad-hoc location in outer pipe assembly, now the path of flushing liquor is blocked, forcing flushing liquor to change flows to, steel ball 12 is moved downward, open passage, now the pressure on ground pressure table can obviously rise, represent that inner tube assembly has reached assigned address, can drill through work, because these mechanisms are this area routine techniques means, it is not the feature technology of this cord coring drill, therefore do not repeat at this, in accompanying drawing, also omit not give and mark.

Embodiment 2

Please refer to the drilling tool right side form of structure shown in Fig. 1, this form of structure provides a kind of split type subland drill to block spring and has protected heart cord coring drill.Drilling tool is pipe assembly and inner tube assembly exceptionally.Reamer 23 tops are with the cord coring drill of embodiment 1, reamer 23 bottoms are by screwed connection drill headstock 21, and the medial and lateral of drill headstock 21 lower ends are all threaded, and external screw thread is connected with outer drill bit 19, internal thread is connected with interior drill bit 20, forms the outer pipe assembly of this kind of drilling tool structure form; Inner tube assembly is substantially the same with structure in embodiment 1, and difference is that inner tube 14 lower ends have replaced with drill bit 20 in the external splines of chamfering with blocking spring abutment 22, creeps into state (as Fig. 1 right side) and salvaging state (as Fig. 2 right side) with embodiment 1.The stepped drill bit structure of split as shown in Figure 8, this split-type structural can be avoided stratum to desertify and seriously easily cause the impact of the inside and outside mutual jam of drill bit on rope salvaging, the ladder height that inside and outside drill bit forms can add according to stratum characteristic, subtract pad and adjust, thereby prevent that to greatest extent rock core is washed, improve stability and the drill bit operating efficiency of drill bit work.Split type subland drill structure has also been eliminated the difficulty that whole subland drill is manufactured.

Except above two kinds of specific embodiments, when running into the stratum of other types, as long as, connect other wire line core bits that are applicable to this earth formation and can drill through accordingly work below 23 at the reamer of this drilling tool.

Above cord coring drill provided by the utility model is described in detail.Applied specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment is just for helping to understand core concept of the present utility model.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.

Claims

1. a cord coring drill, comprises outer pipe assembly, inner tube assembly; In described outer pipe assembly, be provided with reamer (23), in described inner tube assembly, be provided with inner tube (14), it is characterized in that, reamer (23) lower end in described outer pipe assembly connects additional joint (16), and described additional joint (16) lower end is connected with outer drill bit (19); Drill bit (20) in the inner tube of described inner tube assembly (14) lower end connects, described interior drill bit (20) protrudes forward with respect to outer drill bit (19).

2. cord coring drill according to claim 1, it is characterized in that, described inner tube (14) inner side is provided with the 3rd layer of basket (15), described the 3rd layer of basket (15) lower inside is provided with clip spring seat (18) and jump ring, and described the 3rd layer of basket (15) outside is provided with blocks spring (17).

3. cord coring drill according to claim 2, is characterized in that, described inner tube (14) lower end is provided with blocks spring coil (25), described in block spring coil (25) and block spring (17) described in being fixedly connected with.

4. cord coring drill according to claim 1, is characterized in that, described outer drill bit (19) is provided with internal spline; Described interior drill bit (20) is provided with the external splines that can be meshed with described outer drill bit (19).

5. cord coring drill according to claim 4, is characterized in that, is equipped with guiding chamfering structure on described internal spline, external splines.

6. cord coring drill according to claim 1, it is characterized in that, reamer (23) lower end in described outer pipe assembly connects drill headstock (21), and described drill headstock (21) inner side is fixedly connected with interior drill bit (20), and described drill headstock outside is fixedly connected with outer drill bit (19).

7. cord coring drill according to claim 6, is characterized in that, between described interior drill bit (20) and outer drill bit (19), is provided with pad.

8. according to the arbitrary described cord coring drill of claim 1-7, it is characterized in that, in described inner tube assembly, be provided with sliding axle (9), slip cap (8), hanging ring (10), described hanging ring (10) hangs over the bottom of sliding axle (9), it is upper that described sliding axle (9) is suspended on slip cap (8), and described slip cap (8) lower end connects the upper end of inner tube (14).

9. rope coring tool according to claim 8, is characterized in that, is provided with " O " RunddichtringO (6) on described sliding axle (9).

10. rope coring tool according to claim 9, is characterized in that, described O " RunddichtringO (6) top is provided with spilled water hole (24).