CN103527096A - Mining drilling and cutting integrated drill bit - Google Patents

Mining drilling and cutting integrated drill bit Download PDF

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Publication number
CN103527096A
CN103527096A CN201310500644.2A CN201310500644A CN103527096A CN 103527096 A CN103527096 A CN 103527096A CN 201310500644 A CN201310500644 A CN 201310500644A CN 103527096 A CN103527096 A CN 103527096A
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CN
China
Prior art keywords
main shaft
drill bit
nozzle
gland
drill
Prior art date
Application number
CN201310500644.2A
Other languages
Chinese (zh)
Inventor
张晓银
Original Assignee
张晓银
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 张晓银 filed Critical 张晓银
Priority to CN201310500644.2A priority Critical patent/CN103527096A/en
Publication of CN103527096A publication Critical patent/CN103527096A/en

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Abstract

The invention discloses a mining drilling and cutting integrated drill bit which comprises a main shaft. An annular gland is arranged at the front end of the main shaft, the rear end of the main shaft is used for being connected with a high-pressure drill pipe, and a spray nozzle is arranged on the main shaft. An elastic piece is arranged in the inner cavity of the main shaft, a sealing element is fixedly arranged at the front end of the elastic piece, the sealing element seals the central cavity of the annular gland when the elastic piece stretches, a clearance is reserved between the sealing element and the main shaft, a connecting piece is fixedly arranged at the front end of the sealing element, a clearance is reserved between the connecting piece and the gland, and a drill bit body is fixedly arranged on the front section of the connecting piece. A tubular protecting piece is coaxially arranged on the rear section of the drill bit body, the tubular protecting piece is located outside the gland and the main shaft, and the length of the tubular protecting piece meets the following condition that the rear end of the tubular protecting piece is located in front of the water orifice of the spray nozzle when the sealing element seals the central cavity of the annular gland. The mining drilling and cutting integrated drill bit is novel in structure and achieves the integration of drilling and cutting, the switching of drilling and cutting is simple and reliable, abrasive materials are not added, and pure water cutting is carried out.

Description

Mining drill cuts one drill bit
Technical field
The invention belongs to colliery mechanical equipment technical field, be specifically related to a kind of mining drill and cut one drill bit.
Background technology
High-pressure water jet is anti-reflection, and protrusion-dispelling technical research starts from the eighties in last century, the at present external anti-reflection protrusion-dispelling technology of high-pressure water jet is very ripe, be widely used in road surface cleaning, industrial derusting, ammunition rust-removing, oil well corrosion protection, metal and nonmetal plate cutting, spray slip casting, broken road surface, broken soybean protein isolate, coal mine gas drainage etc., especially Australian, in ground and down-hole drilling, applying high voltage water is auxiliary creeps into the anti-reflection technology of joint-cutting very ripely, in the whole world, accounts for leading position.
Domestic high-pressure water jet is anti-reflection, and protrusion-dispelling technical research starts from the nineties in last century, has respectively research abrasive high-pressure water jet projecting equipment and technology, and owing to adding abrasive material, complex process, is applicable to more shallow outburst-prevention gas extraction boring; And utilize the high-pressure water shot flow device of rig circumgyration incision, drilling rod water delivery, the easy seepage in drilling rod junction, pressurize problem to need to solve; And the anti-reflection projecting equipment of high-pressure water jet, cannot realize boring and cut one, there is the water route problem of easily stopping up.
Summary of the invention
The object of this invention is to provide a kind of mining drill and cut one drill bit, a kind of drill bit of new construction is provided, realized bore cut integrated, drill and the switching of cutting simple and reliable, do not add abrasive material, pure water cutting.
The technical solution adopted in the present invention is, cut an one drill bit, comprise the main shaft that inner chamber is opened, the front end of main shaft is coaxially installed with annular gland, rear end, for being connected with high pressure drilling rod, is radially provided with on main shaft for cutting the nozzle in coal seam; In main shaft inner chamber and the place ahead and the main shaft that are positioned at nozzle installation place be coaxially installed with elastic component, elastic component front end is installed with seal, seal travels forward when elastic component stretches thereupon, and the circulation passage between closed ring gland and main shaft, between seal and main shaft, there is the space that is used to form water stream channel, the front end of seal is installed with connector, between connector and gland, have the space that is used to form water stream channel, the leading portion of connector stretches out the outside of gland and is coaxially installed with drill bit; The back segment of drill bit is coaxially installed with tubulose and protects part, tubulose protects the outside that part is sleeved on gland and main shaft, the length that tubulose protects part meets the following conditions: during circulation passage between seal closed ring gland and main shaft, tubulose protects the place ahead that the rear end of part is positioned at nozzle water jet to open the water jet of nozzle; Otherwise tubulose protects the rear end of part is positioned at the rear of nozzle water jet with the water jet of shut-off nozzle.
Further, elastic component is spring, and in main shaft inner chamber and the place ahead that is positioned at nozzle installation place is provided with a stepped boss, and the rear end of spring is against on the front end face of described stepped boss.
Further, seal is splined shaft, and the diameter of the external diameter of splined shaft and its glissile segment in main shaft inner chamber adapts.
Further, connector is connecting pin, and connecting pin is threaded with drill bit.
Further, tubulose protects part and comprises sliding sleeve and nozzle protector, and sliding sleeve is threaded on the back segment of drill bit, and nozzle protector is fixedly connected on the back segment of sliding sleeve by bayonet lock; The outside of main shaft and the place ahead that is positioned at nozzle installation place are provided with main shaft glissile segment, are provided with one or be provided with a plurality of slide-and-guide bars along even circumferential on main shaft glissile segment, and slide-and-guide bar is all parallel with the axial direction of main shaft; The inner chamber of sliding sleeve is sliding sleeve glissile segment with respect to the sliding area of slide-and-guide bar, and sliding sleeve glissile segment is provided with the chute adapting with slide-and-guide bar, and the shape of cross section of the shape of cross section of sliding sleeve glissile segment and main shaft glissile segment adapts; Bayonet lock is arranged on the rear end of chute.
Further, main shaft glissile segment is annular boss, and sliding sleeve glissile segment is annular inner groovy.
Further, have the water stream channel with main shaft intracavity inter-connection in drill bit, the quantity of water stream channel is all corresponding with the brill tooth on this drill bit with position.
Further, have for the installing hole of nozzle is installed on main shaft, between each installing hole and the cavity of main shaft, also have an interlayer, interlayer and main shaft are integral structures, have limbers on interlayer.
Further, the back segment of gland stretches in main shaft and with spindle thread and is connected, and the junction of gland and main shaft is provided with gland ring.
Further, the quantity of nozzle is a plurality of, and is uniformly distributed along the circumferencial direction of main shaft, and nozzle and main shaft junction are provided with nozzle base sealing ring.
The beneficial effect that mining drill of the present invention cuts one drill bit is:
One, cutting diameter is large, than the large 0.4m of conventional slot equipment.
Two, realized boring and cut integratedly, after drilling construction is complete, can cut from starting to move back drilling at the bottom of hole, need not repeatedly move back and creep into brill, saved human cost.
Three, it is reasonable that mining drill cuts one drill bit structure, adopts water under high pressure pressure and longitudinal spring to match, and switches and drill and cut two kinds of different operating states.
Four, when drilling, run into bit freezing phenomenon and can abandon drill bit, drilling rod exits boring completely, reduces loss.
Five, do not add abrasive material, pure water cutting, has overcome abrasive high-pressure water jet cutting to equipment attrition and the restricted problem of cutting hole depth.
Accompanying drawing explanation
Fig. 1 is that mining drill of the present invention cuts the structural representation of one drill bit under the duty of drilling;
Fig. 2 is that mining drill of the present invention cuts the structural representation of one drill bit under cutting duty;
Fig. 3 is the right view of the drill bit in the present invention;
Fig. 4 is that A-A in Fig. 1 is to sectional drawing;
Fig. 5 is that B-B in Fig. 1 is to sectional drawing;
Fig. 6 is the I place partial enlarged drawing in Fig. 1;
Fig. 7 is the II place partial enlarged drawing in Fig. 1.
Wherein, 1, main shaft, 2, nozzle base, 3, nozzle protector, 4, bayonet lock, 5, splined shaft, 6, sliding sleeve, 7, connecting pin, 8, gland, 9, drill bit, 10, nozzle base sealing ring, 11, gland ring, 12, spring, 13, nozzle.
The specific embodiment
As depicted in figs. 1 and 2, mining drill of the present invention cuts one drill bit, comprises the main shaft 1 that inner chamber is opened, and the front end of main shaft 1 is coaxially installed with gland 8, and the back segment of gland 8 stretches in main shaft 1 and with main shaft 1 and is threaded.Gland 8 is loop configuration, and its central lumen is water stream channel.As shown in Figure 7, for guaranteeing sealing and pressurize, the junction of gland 8 and main shaft 1 is provided with gland ring 11.The rear end of main shaft 1, for being connected with high pressure drilling rod, specifically: the back segment of main shaft 1 inner chamber is provided with internal thread, is connected with high pressure drill rod thread.
On main shaft 1, radial direction is provided with for cutting the nozzle 13 in coal seam.Main shaft 1 when realizing the efficient and work of cutting under high speed rotating state stressed evenly, the quantity of nozzle 13 is a plurality of, and is uniformly distributed along the circumferencial direction of main shaft 1.On main shaft 1, have for the installing hole of nozzle is installed, each nozzle 13 is to be arranged on corresponding installing hole by corresponding nozzle base 2.As shown in Figure 6, for guaranteeing sealing, nozzle 13 and main shaft 1 junction are provided with nozzle base sealing ring 10, specifically between nozzle base 2 and main shaft 1.For guaranteeing both intracavity inter-connections of nozzle 13 and main shaft 1, between installing hole and the cavity of main shaft 1, also there is an interlayer, on interlayer, have limbers, water under high pressure passes through when guaranteeing to cut.Interlayer and main shaft 1 are integral structures, do not need to arrange in addition the independently device such as screen pack.
In main shaft 1 inner chamber and the place ahead that is positioned at nozzle 13 installation places is coaxially installed with elastic component.Elastic component front end is installed with seal, and seal travels forward when elastic component stretches thereupon, and the circulation passage between closed ring gland and main shaft, seals the center cavity of annular gland 8.Between seal and main shaft 1, there is the space that is used to form water stream channel, the front end of seal is installed with connector, between connector and gland 8, have the space that is used to form water stream channel, the leading portion of connector stretches out the outside of gland 8 and is coaxially installed with drill bit 9.
In the present embodiment, elastic component is spring 12, and its concrete mounting means is: in main shaft 1 inner chamber and the place ahead that is positioned at nozzle 13 installation places is provided with a stepped boss, and the rear end of spring 12 is against on the front end face of stepped boss.Seal is splined shaft 5, and the diameter of the external diameter of splined shaft 5 and its glissile segment in main shaft 1 inner chamber adapts, and between the fluting place, outside of splined shaft 5 and the inwall of main shaft 1, forms water stream channel.Connector is connecting pin 7, and connecting pin 7 is threaded with drill bit 9.
As shown in Figure 3, drill bit 9 has the water stream channel with main shaft 1 intracavity inter-connection, and water stream channel for deslagging, specifically communicates with the central cavity of gland 8, thereby realizes and the communicating of main shaft 1 inner chamber.The quantity of water stream channel is all corresponding with the brill tooth on this drill bit 9 with position.
The back segment of drill bit 9 is coaxially installed with tubulose and protects part, tubulose protects the outside that part is positioned at gland 8 and main shaft 1, the length that tubulose protects part meets the following conditions: during circulation passage between seal closed ring gland 8 and main shaft 1, tubulose protects the place ahead that the rear end of part is positioned at nozzle 13 water jets to open the water jet of nozzle 13; Otherwise the rear end that tubulose protects part is positioned at the rear of nozzle 13 water jets with the water jet of shut-off nozzle 13.
Shown in Fig. 4 and Fig. 5, in the present embodiment, tubulose protects part and comprises sliding sleeve 6 and nozzle protector 3, and sliding sleeve 6 is threaded on the back segment of drill bit 9, and nozzle protector 3 is fixedly connected on the back segment of sliding sleeve 6 by bayonet lock 4.Main shaft glissile segment is annular boss, and sliding sleeve glissile segment is annular inner groovy.Bayonet lock 4 is arranged on the rear end of chute.The outside of main shaft 1 and the place ahead that is positioned at nozzle 13 installation places are provided with main shaft glissile segment, are provided with one or be provided with four slide-and-guide bars along even circumferential on main shaft glissile segment, and slide-and-guide bar is all parallel with the axial direction of main shaft 1.The inner chamber of sliding sleeve 6 is sliding sleeve glissile segment with respect to the sliding area of slide-and-guide bar, and sliding sleeve glissile segment is provided with the chute adapting with slide-and-guide bar, and the shape of cross section of the shape of cross section of sliding sleeve glissile segment and main shaft glissile segment adapts.
The operating principle that mining drill of the present invention cuts one drill bit is: the present invention is connected with high pressure drilling rod, and high pressure drilling rod drives High Rotation Speed of the present invention and passes into water under high pressure or low-pressure water.As shown in Figure 1, when work is drilled in realization, only need in main shaft 1, pass into low-pressure water, now, high pressure drilling rod drives High Rotation Speed of the present invention, and the brill tooth High Rotation Speed of drill bit 9 is realized the work of drilling.Water circulating pathway under this duty is: water flows into the inner chamber back segment of main shaft 1, because nozzle protector 3 rear ends are now positioned at the rear of nozzle 13 water jets, therefore the water jet of nozzle 13 is sealed by nozzle protector 3, therefore the water in main shaft 1 enters the inner chamber that spring is installed, the water stream channel of then flowing through successively between splined shaft 5 outer walls and main shaft 1 inwall, and the water stream channel between connecting pin 7 and gland 8, finally by the water stream channel in drill bit 9, discharge, play the effect of deslagging.
As shown in Figure 2, when realizing cutting work, only need in main shaft 1, pass into water under high pressure, now, high pressure drilling rod drives High Rotation Speed of the present invention, and water under high pressure enters the inner chamber back segment of main shaft 1, promoting splined shaft 5 travels forward, spring 12 stretches, and splined shaft 5 props up forward the center cavity of gland 8 gland 8, and water under high pressure cannot flow out from the water stream channel of drill bit 9; In the proal process of gland 8, connecting pin 7 drives drill bit 9 to travel forward, sliding sleeve 6 and nozzle protector 3 are thereupon synchronously to front slide, now, by coordinating between the slide-and-guide bar of main shaft glissile segment and the chute of sliding sleeve glissile segment, realize the sealing pressurize of sliding steadily and in main shaft 1, until bayonet lock 4 is against on the rear end face of annular boss; Now, nozzle protector 3 is positioned at the place ahead of nozzle 13 water jets, and nozzle 13 is started working and outwards sprayed water under high pressure, realizes cutting operation.

Claims (10)

1. a mining drill cuts one drill bit, it is characterized in that, comprise the main shaft (1) that inner chamber is opened, the front end of described main shaft (1) is coaxially installed with annular gland (8), rear end, for being connected with high pressure drilling rod, is radially provided with the nozzle (13) for cutting coal seam on described main shaft (1);
In described main shaft (1) inner chamber, and the place ahead and the main shaft (1) that are positioned at nozzle (13) installation place are coaxially installed with elastic component, described elastic component front end is installed with seal, described seal travels forward when elastic component stretches thereupon, and the circulation passage between closed ring gland (8) and main shaft (1), described seal and main shaft have the space that is used to form water stream channel between (1), the front end of described seal is installed with connector, described connector and gland have the space that is used to form water stream channel between (8), the leading portion of described connector stretches out the outside of gland (8) and is coaxially installed with drill bit (9),
The back segment of described drill bit (9) is coaxially installed with tubulose and protects part, described tubulose protects the outside that part is sleeved on gland (8) and main shaft (1), the length that described tubulose protects part meets the following conditions: during circulation passage between seal closed ring gland (8) and main shaft (1), tubulose protects the place ahead that the rear end of part is positioned at nozzle (13) water jet to open the water jet of nozzle (13); Otherwise the rear end that described tubulose protects part is positioned at the rear of nozzle (13) water jet with the water jet of shut-off nozzle (13).
2. according to mining drill described in claim 1, cut one drill bit, it is characterized in that, described elastic component is spring (12), in described main shaft (1) inner chamber and the place ahead that is positioned at nozzle (13) installation place is provided with a stepped boss, and the rear end of described spring (12) is against on the front end face of described stepped boss.
3. according to mining drill described in claim 1, cut one drill bit, it is characterized in that, described seal is splined shaft (5), and the diameter of the external diameter of described splined shaft (5) and its glissile segment in main shaft (1) inner chamber adapts.
4. according to mining drill described in claim 1, cut one drill bit, it is characterized in that, described connector is connecting pin (7), and described connecting pin (7) is threaded with drill bit (9).
5. according to mining drill described in claim 1,2,3 or 4, cut one drill bit, it is characterized in that, described tubulose protects part and comprises sliding sleeve (6) and nozzle protector (3), described sliding sleeve (6) is threaded on the back segment of drill bit (9), and described nozzle protector (3) is fixedly connected on the back segment of sliding sleeve (6) by bayonet lock (4); The outside of described main shaft (1) and the place ahead that is positioned at nozzle (13) installation place are provided with main shaft glissile segment, on described main shaft glissile segment, be provided with one or be provided with a plurality of slide-and-guide bars along even circumferential, described slide-and-guide bar is all parallel with the axial direction of main shaft (1); The inner chamber of described sliding sleeve (6) is sliding sleeve glissile segment with respect to the sliding area of slide-and-guide bar, described sliding sleeve glissile segment is provided with the chute adapting with slide-and-guide bar, and the shape of cross section of the shape of cross section of described sliding sleeve glissile segment and main shaft glissile segment adapts; Described bayonet lock (4) is arranged on the rear end of chute.
6. according to mining drill described in claim 5, cut one drill bit, it is characterized in that, described main shaft glissile segment is annular boss, and described sliding sleeve glissile segment is annular inner groovy.
7. according to mining drill described in claim 1,2,3 or 4, cut one drill bit, it is characterized in that, in described drill bit (9), have the water stream channel with main shaft (1) intracavity inter-connection, the quantity of described water stream channel is all corresponding with the brill tooth on this drill bit (9) with position.
8. according to mining drill described in claim 1,2,3 or 4, cut one drill bit, it is characterized in that, on described main shaft (1), have for the installing hole of nozzle is installed, between the cavity of described each installing hole and main shaft (1), also there is an interlayer, described interlayer and main shaft (1) are integral structures, on described interlayer, have limbers.
9. according to mining drill described in claim 1,2,3 or 4, cut one drill bit, it is characterized in that, the back segment of described gland (8) stretches in main shaft (1) and with main shaft (1) and is threaded, and the junction of described gland (8) and main shaft (1) is provided with gland ring (11).
10. according to mining drill described in claim 1,2,3 or 4, cut one drill bit, it is characterized in that, the quantity of described nozzle (13) is a plurality of, and is uniformly distributed along the circumferencial direction of main shaft (1), and described nozzle (13) and main shaft (1) junction are provided with nozzle base sealing ring (10).
CN201310500644.2A 2013-10-22 2013-10-22 Mining drilling and cutting integrated drill bit CN103527096A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109630021A (en) * 2018-11-08 2019-04-16 中煤科工集团西安研究院有限公司 A kind of spinning jet stream is from into seam cutting drill bit

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1761936A1 (en) * 1990-02-28 1992-09-15 Новочеркасский политехнический институт им.С.Орджоникидзе Device for rolling cutter bit bearing sludge protecting and lubricating
CN1776185A (en) * 2005-11-26 2006-05-24 太原理工大学 High-pressure water jet drill bit capable of punching and cutting by switching of water pressure
CN201090139Y (en) * 2007-10-11 2008-07-23 中国矿业大学 Press control drill scalpel integration drilling bit
CN202117570U (en) * 2011-07-01 2012-01-18 江苏省矿业工程集团有限公司 Plug-in type high-pressure cutting drill bit
CN202380976U (en) * 2011-09-19 2012-08-15 中国矿业大学 Mechanical automatic-switching type high-pressure water jet slotting drill
CN102877789A (en) * 2012-09-28 2013-01-16 西安美尼矿山设备科技有限公司 Drilling and cutting integrated drilling bit
CN203559780U (en) * 2013-10-22 2014-04-23 张晓银 Drilling and cutting integrated drill for mining

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1761936A1 (en) * 1990-02-28 1992-09-15 Новочеркасский политехнический институт им.С.Орджоникидзе Device for rolling cutter bit bearing sludge protecting and lubricating
CN1776185A (en) * 2005-11-26 2006-05-24 太原理工大学 High-pressure water jet drill bit capable of punching and cutting by switching of water pressure
CN201090139Y (en) * 2007-10-11 2008-07-23 中国矿业大学 Press control drill scalpel integration drilling bit
CN202117570U (en) * 2011-07-01 2012-01-18 江苏省矿业工程集团有限公司 Plug-in type high-pressure cutting drill bit
CN202380976U (en) * 2011-09-19 2012-08-15 中国矿业大学 Mechanical automatic-switching type high-pressure water jet slotting drill
CN102877789A (en) * 2012-09-28 2013-01-16 西安美尼矿山设备科技有限公司 Drilling and cutting integrated drilling bit
CN203559780U (en) * 2013-10-22 2014-04-23 张晓银 Drilling and cutting integrated drill for mining

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109630021A (en) * 2018-11-08 2019-04-16 中煤科工集团西安研究院有限公司 A kind of spinning jet stream is from into seam cutting drill bit
CN109630021B (en) * 2018-11-08 2020-05-05 中煤科工集团西安研究院有限公司 Self-rotating jet flow self-feeding slotting drill bit

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