CN203570207U - Screw expansion type concentric down-the-hole pipe-following drilling rig - Google Patents
Screw expansion type concentric down-the-hole pipe-following drilling rig Download PDFInfo
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- CN203570207U CN203570207U CN201320665088.XU CN201320665088U CN203570207U CN 203570207 U CN203570207 U CN 203570207U CN 201320665088 U CN201320665088 U CN 201320665088U CN 203570207 U CN203570207 U CN 203570207U
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Abstract
The utility model discloses a screw expansion type concentric down-the-hole pipe-following drilling rig, and particularly relates to transformation of the structure of a drilling rig. The screw expansion type concentric down-the-hole pipe-following drilling rig comprises a connector and a drilling bit, wherein a connecting rod is arranged at the rear end of the drilling bit, the connecting rod of the drilling bit is matched with a three-edge-type hole in the connector, three grooves are evenly distributed in the surface of the combined part of the drilling bit and the connector in the circumferential direction, three sliding block expansion pieces are located in the three grooves respectively, rotating shafts are transversely arranged at the inner ends of the sliding block expansion pieces, and the rotating shafts are arranged in the grooves of the connector. A small through hole is formed in the surface of the connector, a transverse pin is inserted in the small through hole, a sliding groove is formed in the connecting rod of the drilling bit, and the middle of the transverse pin is arranged in the sliding groove. The sliding groove is in a long strip shape and is formed in the axial direction of the surface of the connecting rod of the drilling bit, and the bottoms of the grooves are circular arcs. The screw expansion type concentric down-the-hole pipe-following drilling rig solves the problems that in the existing expansion hole pipe-following drilling process, the swing amplitude is large, holes are drilled off the center easily, and expansion pieces fall off easily.
Description
Technical field
The utility model relates to a kind of drilling tool, is specifically related to a kind of transformation of structure of drilling tool.
Background technology
Transfer is crept into as a kind of special drilling method.While creeping into be pressed into or to rotate, be lowered to sleeve pipe; Or sleeve pipe is pressed in advance or rotates and be lowered to, then drilling tool and then creeps into.This method can prevent that hole wall collapse or the quicksand in drilling process from filling boring, is applicable to creep into scall and drifting sand layer.In major diameter engineering is crept into, because setting of casing needs large moment of torsion and power, therefore the special machinery that is called pipe rubbing machine of normal outfit carries out the cased operation while creeping into.
Existing eccentric type down-the-hold drill bit, due to the intrinsic shortcoming of eccentric stiffener, although solved the problem that reaming is entered with pipe bit, swings greatly, and Kong Yi trains off; Air hammer concentric simultaneous casing drilling tool adopts concentric principle, does not swing, and has overcome the shortcoming of eccentric drilling device, but because its spread sheet connected mode is unreasonable, during work spread sheet in take the lead with connector in the middle of crack in, spread sheet only has one end to be connected in connector.Although spread sheet contacts good with the tactile face of connector in inoperative situation, but when outwards overturning during spread sheet work, because the axis of its joint face has with connector, overlap and become inclination, joint face just can not well contact like this, so face contact just becomes a contact, contact area reduces greatly, simultaneously, in order to guarantee spread sheet smooth opening and closure, the fit clearance of junction must be obtained very large, these situations make spread sheet and being connected of connector become unreliable, due to the large impact power of hidden hole drilling operation own, the feature of big bang, its spread sheet is very easy to come off.
Summary of the invention
The utility model provides a kind of rotary expansion type concentric down-the-hole casing drilling tool, and the utility model has solved existing reaming with in pipe drilling process, swings the problems such as large, Kong Yi trains off, spread sheet easily comes off.
For addressing the above problem, the utility model adopts following technical scheme: the concentric down-the-hole casing drilling tool of a kind of rotary expansion type, comprise connector 1 and drill bit 2, there is connecting rod drill bit 2 rear ends, the connecting rod of drill bit 2 coordinates with the Rhizoma Sparganii type hole on connector 1, and drill bit 2 and connector 1 binding site surface 6, the three slide block spread sheets 3 of three grooves that along the circumferential direction distribute equably lay respectively in three grooves 6, the inner of slide block spread sheet 3 is horizontally arranged with rotating shaft 5, and rotating shaft 5 is arranged in the groove of connector 1; There is the aperture of perforation on connector 1 surface, is inserted with lateral pin 4 in aperture, is provided with chute 7 on the connecting rod of drill bit 2, and lateral pin 4 middle parts are arranged in chute 7; Chute 7 is strip, along the axially setting of connecting rod surface of drill bit 2; Groove 6 bottoms are circular arc.
While working due to this drilling tool the centre of gyration of slide block spread sheet and drill bit be in same in the heart, slide block spread sheet is again that 120 degree are uniformly distributed centered by connector, so in drilling process, rig without swinging, moment of torsion resistance is little, pore-forming is very round, little to shoe, casing damage, broken stone is fast, drilling depth is even, without reversion, directly regains; In slide block spread sheet when work of this drilling tool, is due to Dou You permanent position, two ends, the particular groove that adds connector is hooked the cylinder ear on spread sheet left end both sides, so spread sheet difficult drop-off, extended its application life, reduce the time of consumptive material consumption and replacing slide block spread sheet, can significantly reduce boring cost.Therefore, haveing suffered the generation that should reduce large etc. a lot of accidents of the disconnected shoe of Ka Zuan ﹑, disconnected sleeve pipe, drillling tool twisting off, breaking of rod bar, tube drawing load forces in creeping into engineering.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Symbol description in figure: 1 is that connector, 2 is that drill bit, 3 is that slide block spread sheet, 4 is that lateral pin, 5 is that rotating shaft, 6 is that groove, 7 is chute.
The specific embodiment
With best embodiment, the utility model is described in detail below
.
As shown in Figure 1, the concentric down-the-hole casing drilling tool of a kind of rotary expansion type, comprise connector 1 and drill bit 2, there is connecting rod drill bit 2 rear ends, the connecting rod of drill bit 2 coordinates with the Rhizoma Sparganii type hole on connector 1, and drill bit 2 and connector 1 binding site surface 6, the three slide block spread sheets 3 of three grooves that along the circumferential direction distribute equably lay respectively in three grooves 6, the inner of slide block spread sheet 3 is horizontally arranged with rotating shaft 5, and rotating shaft 5 is arranged in the groove of connector 1; There is the aperture of perforation on connector 1 surface, is inserted with lateral pin 4 in aperture, is provided with chute 7 on the connecting rod of drill bit 2, and lateral pin 4 middle parts are arranged in chute 7; Chute 7 is strip, along the axially setting of connecting rod surface of drill bit 2; Groove 6 bottoms are circular arc.
As shown in Figure 1, this drilling tool is mainly comprised of connector 1, drill bit 2, slide block spread sheet 3 and lateral pin 4, and slide block spread sheet 3 one has 3, is evenly distributed on connector 1 circumference, stressed even while guaranteeing drilling tool work, hole can not trained off.Connector 1 is connected with impactor, through drilling rod, transmit impact force and pressure-air, connector 1 adopts Rhizoma Sparganii type hole transmitting torque to drill bit 2, connector 1 by the particular groove transmitting torque that is connected with spread sheet to slide block spread sheet 3, drill bit 2 groove by end face also transmitting portions moment of torsion is to slide block spread sheet 3, slide block spread sheet 3 is rotated under the two acting in conjunction like this.During drilling tool work, impact force passes to slide block spread sheet 3 and drill bit 2 by connector 1, because slide block spread sheet 3 is arranged in the groove of connector 1, on the right of adding, end face is fixed by drill bit 2 again, and stressing conditions is good, difficult drop-off, long service life.Punching is after depth requirements, rig moves up, band movement connector 1 moves to left by shown position, at this moment, drill bit 2 under self gravitation effect downwards (in figure to the right) mobile, until catch on lateral pin 4, at this moment slide block spread sheet 3 just under the extruding of shoe and the double action of deadweight around the rotation of the center of circle of the particular groove of connector (in figure upwards), until spread sheet bottom contacts with the triangular prism of drill bit 2, now the external diameter of spread sheet 3 is identical with drill bit 2, can from steel pipe, regain.
Finally it should be noted that: obviously, above-described embodiment is only for the utility model example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And the apparent variation of being amplified out thus or change are still among protection domain of the present utility model.
Claims (3)
1. the concentric down-the-hole casing drilling tool of rotary expansion type, comprise connector (1) and drill bit (2), it is characterized in that, there is connecting rod drill bit (2) rear end, the connecting rod of drill bit (2) coordinates with the Rhizoma Sparganii type hole on connector (1), drill bit (2) and connector (1) binding site surface three grooves (6) that along the circumferential direction distribute equably, three slide block spread sheets (3) lay respectively in three grooves (6), the inner of slide block spread sheet (3) is horizontally arranged with rotating shaft (5), and rotating shaft (5) is arranged in the groove of connector (1); There is the aperture of perforation on connector (1) surface, is inserted with lateral pin (4) in aperture, is provided with chute (7) on the connecting rod of drill bit (2), and lateral pin (4) middle part is arranged in chute (7).
2. the concentric down-the-hole casing drilling tool of a kind of rotary expansion type as claimed in claim 1, is characterized in that, chute (7) is strip, along the axially setting of connecting rod surface of drill bit (2).
3. the concentric down-the-hole casing drilling tool of a kind of rotary expansion type as claimed in claim 1, is characterized in that, groove (6) bottom is circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320665088.XU CN203570207U (en) | 2013-10-28 | 2013-10-28 | Screw expansion type concentric down-the-hole pipe-following drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320665088.XU CN203570207U (en) | 2013-10-28 | 2013-10-28 | Screw expansion type concentric down-the-hole pipe-following drilling rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203570207U true CN203570207U (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320665088.XU Expired - Fee Related CN203570207U (en) | 2013-10-28 | 2013-10-28 | Screw expansion type concentric down-the-hole pipe-following drilling rig |
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| Country | Link |
|---|---|
| CN (1) | CN203570207U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915026A (en) * | 2019-04-26 | 2019-06-21 | 文泓润 | A kind of self-centering concentric simultaneous casing drilling tool |
-
2013
- 2013-10-28 CN CN201320665088.XU patent/CN203570207U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915026A (en) * | 2019-04-26 | 2019-06-21 | 文泓润 | A kind of self-centering concentric simultaneous casing drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171129 Address after: 611930 Sichuan city of Pengzhou Province Meng Yang Zhen GUI Qiao Village 7 Group No. 60 Patentee after: Wen Hongrun Address before: 618300 Guanghan City, Deyang, Sichuan Province, Shenzhen Lu Xi two section Patentee before: SICHUAN SHIHUA MACHINERY CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20171028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |