CN102877789B - Drilling and cutting integrated drilling bit - Google Patents
Drilling and cutting integrated drilling bit Download PDFInfo
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- CN102877789B CN102877789B CN201210371369.4A CN201210371369A CN102877789B CN 102877789 B CN102877789 B CN 102877789B CN 201210371369 A CN201210371369 A CN 201210371369A CN 102877789 B CN102877789 B CN 102877789B
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Abstract
The invention discloses a drilling and cutting integrated drilling bit which comprises a drill bit shell and a hydraulic cutting component arranged in the drill bit shell. The drill bit achieves switching of drilling and cutting by back-and-forth horizontal movement of the hydraulic cutting component in the drill bit shell, first drilling cutters are arranged on the outer side of the front end of the drill bit shell, and first drainage channels communicated with an inner cavity of the drill bit shell are arranged at the front end of the drill bit shell. The hydraulic cutting component comprises a hydraulic spinning cutting head, a first guide tube and a rotating joint which are sequentially connected, the hydraulic spinning cutting head is arranged at the inner front end of the drill bit shell, a first limit mechanism is arranged on the inner wall of the drill bit shell positioned on the periphery of the first guide tube, a second limit mechanism is arranged on the inner wall of the drill bit shell positioned in the rear of the first limit mechanism, and a nozzle is mounted on the hydraulic spinning cutting head. The drilling and cutting integrated drilling bit is compact in structure and high in practicality and popularization and application values, acquisition cost and use cost of equipment are reduced, labor hour is shortened while labor cost is reduced, and drainage efficiency of coal seam gas is improved.
Description
Technical field
The invention belongs to control of coalmine gas equipment technical field, especially relate to a kind of boring and cut one drill bit.
Background technology
The gas in coal seam is mainly taken out in current control of coalmine gas in advance by construction drill, avoid the gas accident in coal mining process.Application single borehole Gas pre-drainage, bore diameter is the key factor affecting gas drainage under suction effect: aperture is little, then the scope of freedom is little, and the mass rate of emission of gas is low, waits for that the time of exploitation is longer, have impact on the production efficiency of mine; And aperture can not be too large, otherwise under the combined stress of coal seam, the formation in hole and the stability in hole can be damaged, and the large boring rate of penetration in aperture is slower, efficiency is lower, need larger extrinsic motive, effective coal hole section of boring often only accounts for the sub-fraction of whole boring, there is no need the boring that construction aperture is too large completely.
The method solved the problem at present is high-pressure water jet slotting technique and hydraulic reaming technology, this technology is after drilling construction terminates that drilling tool is exited boring, utilize rig, the shower nozzle of the drilling rod and drilling rod front end with pressure maintaining performance is delivered in boring, pressurize drilling rod is connected with high-pressure hydraulic pump high-pressure rubber pipe, utilize water under high pressure to cut or reaming coal seam, this technique improves the exposed area of coal body, thus substantially increase the drainage efficient of coal-bed gas.But during the application of this technology, after needing drilling construction to terminate, transporting and cutting apparatus is in hole again, adds working procedure.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of boring is provided to cut one drill bit, its compact conformation, rationally novel in design, processing and fabricating is convenient, reduce equipment purchasing cost and use cost, shorten labour hour and labour cost, improve the drainage efficient of coal-bed gas, practical, result of use is good, and application value is high.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of boring cuts one drill bit, it is characterized in that: comprise drill bit housing and be arranged on the waterpower cutting assembly in drill bit housing, described drill bit is moved forward and backward by the transverse direction of described waterpower cutting assembly in drill bit housing and realizes creeping into and the switching of cutting, the front end outer side of described drill bit housing is provided with first and creeps into cutter, and the front end of described drill bit housing has the first row aquaporin be communicated with drill bit housing cavity, described waterpower cutting assembly comprises the hydraulic spinning cutting head connected successively, first conduit and swivel joint, it is inner that described hydraulic spinning cutting head is arranged on described drill bit housing forward end, the drill bit inner walls being positioned at described first suitable patterns is provided with the first position-limit mechanism for limiting shift position backward and the position of rotation of described hydraulic spinning cutting head, the drill bit inner walls being positioned at described first position-limit mechanism rear is provided with for limiting and for forming the second position-limit mechanism of hermetically-sealed construction with described waterpower cutting assembly the position that moves forward of described waterpower cutting assembly, described hydraulic spinning cutting head is provided with the nozzle for jet water course.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: outside described swivel joint, be set with sliding sleeve, described sliding sleeve outer wall is close to described drill bit inner walls and is arranged, the current groove that multiple tracks is passed through from back to front for current is axially had on described sliding sleeve outer wall or in described drill bit inner walls, the front end of described sliding sleeve is provided with the cyclic convex edge for being against on described second position-limit mechanism rear end end face, the rear end of described sliding sleeve is connected with the gland for being fixed on by described swivel joint in described sliding sleeve, and the center of described gland has the gland centre bore supplying water and flow through.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: described drill bit housing creeps into housing by first and creeps into back-connected first drilling rod of housing and be connected housing two parts with first and form, multiple described first row aquaporin and multiple described first creeps into cutter and is evenly arranged on the front end outer side that described first creeps into housing, described first position-limit mechanism is positioning joint and is connected to described first to creep on the inwall of housing, described second position-limit mechanism is made up of the rear end end face being arranged on the ring-type spacing preiection that described first creeps in inner walls, the rear end inwall of described first drilling rod connection housing is provided with the drilling rod connecting thread for being connected with drill rod thread.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: be positioned at first of described sliding sleeve periphery and creep in inner walls and axially have the first gathering sill, on described sliding sleeve, radial direction has the first vertical through hole, is provided with the first feather key matched with described first gathering sill in the described first vertical through hole.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: the shape of described first feather key is " L " shape.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: described first drilling rod connection housing and described first creeps into housing rear threads and is connected, and described first drilling rod connection housing and described first creeps between housing and is provided with the first pad.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: the nose threads that described first drilling rod connects housing is connected to the inside, rear end that described first creeps into housing, between the front end surface of described first drilling rod connection housing and the rear end end face of described gland, be provided with spring.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: described gland has one or more gland through hole around the periphery of described gland centre bore.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: the rear end of described swivel joint is connected with the second conduit, the rear end of described second conduit is connected with seal cover, the center of described seal cover has the seal cover centre bore supplying water and flow through, and the first half external diameter of described seal cover is greater than latter half of external diameter and the front end surface of described seal cover can be against on the rear end end face of described second position-limit mechanism.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: the rear end of described seal cover is provided with the filter screen covered on described seal cover centre bore, the rear end of described seal cover is connected with the end cap for fixing described filter screen, and the center of described end cap has the end cap central bore supplying water and flow through.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: described end cap is threaded with the rear end of described seal cover.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: described drill bit housing creeps into housing by second, creep into the back-connected sleeve pipe of housing and be connected housing three part with back-connected second drilling rod of sleeve pipe form with second, multiple described first row aquaporin and multiple described first creeps into cutter and is evenly arranged on the front end outer side that described second creeps into housing, described first position-limit mechanism is positioning joint and is connected to described second to creep on the inwall of housing, described second position-limit mechanism is made up of the rear end end face of the described sleeve pipe extending into described second drilling rod connection enclosure interior, described seal cover is arranged on described second drilling rod and connects in housing, the rear end inwall of described second drilling rod connection housing is provided with the drilling rod connecting thread for being connected with drill rod thread.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: the rear end end face of described sleeve pipe is provided with sealed groove, is provided with the sealing mat between the front end surface and the rear end end face of described sleeve pipe of described seal cover in described sealed groove.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: the second drilling rod being positioned at described seal cover periphery connects axis in inner walls and has multiple tracks second gathering sill, on described seal cover, radial direction has the second vertical through hole, be provided with in the described second vertical through hole with in the second gathering sill described in multiple tracks arbitrarily together with the second feather key of matching.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: described sleeve pipe and described second creeps into housing rear threads and is connected, described second drilling rod connects housing and is connected with described sleeve pipe rear threads, is provided with the second pad between described second drilling rod connection housing and described sleeve pipe.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: described second drilling rod connection housing rear inside wall is provided with annular projection, is provided with spring between the rear end end face of described annular projection and described end cap.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: described hydraulic spinning cutting head comprises cutting head housing, described cutting head housing rear end is provided with water inlet, the front portion radial direction of described cutting head housing has the first eccentric delivery port and the second eccentric delivery port, described first eccentric delivery port is all connected with described water inlet with the second eccentric delivery port, the axis of described first eccentric delivery port and the axis of the second eccentric delivery port are two parallel lines, internal thread is provided with in described first eccentric delivery port and in described second eccentric delivery port, the quantity of described nozzle is two and is threaded in described first eccentric delivery port and in the second eccentric delivery port respectively, the rear end face of described cutting head housing is provided with the first limited block.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: described first position-limit mechanism is provided with the second limited block matched with described first limited block, the quantity of described first limited block and the quantity of described second limited block are two, and two described first limited blocks and the interlaced setting of two described second limited blocks.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: described cutting head housing has one or more second row aquaporin around the periphery of described water inlet.
Above-mentioned one is bored and is cut one drill bit, it is characterized in that: the front end face of described cutting head housing is provided with one or more second and creeps into cutter.
The present invention compared with prior art has the following advantages:
1, compact conformation of the present invention, rationally novel in design, processing and fabricating is convenient.
2, integrated degree of the present invention is high, can be moved forward and backward by the transverse direction of waterpower cutting assembly in drill bit housing and realize creeping into and the switching of cutting, compared to the drill bit creeping into function and cutting function in prior art and be provided separately, reduce equipment purchasing cost and use cost, the conveying operation of a set of drilling tool is decreased when constructing, shorten labour hour and labour cost, substantially increase the drainage efficient of coal-bed gas.
3, of the present invention to realize cost low, long service life, in use procedure, without the need to often keeping in repair and safeguarding, maintenance and maintenance cost low.
4, of the present invention practical, result of use is good, and application value is high.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the right view of Fig. 1.
Fig. 3 is the first structural representation creeping into housing in the embodiment of the present invention 1.
Fig. 4 is the structural representation of gland in the embodiment of the present invention 1.
Fig. 5 is the A-A view of Fig. 4.
Fig. 6 is the structural representation of sliding sleeve in the embodiment of the present invention 1.
Fig. 7 is the left view of Fig. 6.
Fig. 8 is the overall structure schematic diagram of the embodiment of the present invention 2.
Fig. 9 is the right view of Fig. 8.
Figure 10 is the structural representation that in the embodiment of the present invention 2, second drilling rod connects housing.
Figure 11 is the B-B view of Figure 10.
Figure 12 is the longitudinal section of hydraulic spinning cutting head of the present invention.
Figure 13 is the left view of Figure 12.
Figure 14 is the C-C view of Figure 12.
Figure 15 is the structural representation of positioning joint of the present invention.
Figure 16 is the right view of Figure 15.
Figure 17 is the structural representation of nozzle of the present invention.
Figure 18 is the using state schematic diagram of the embodiment of the present invention 1 drilling construction process.
Figure 19 is the using state schematic diagram of the embodiment of the present invention 1 cutting construction process.
Figure 20 is the using state schematic diagram of the embodiment of the present invention 2 drilling construction process.
Figure 21 is the using state schematic diagram of the embodiment of the present invention 2 cutting construction process.
Description of reference numerals:
1-first row aquaporin; 2-the first creeps into cutter; 3-drilling rod connecting thread;
4-hydraulic spinning cutting head; 4-1-cutting head housing; The eccentric delivery port of 4-2-the first;
The eccentric delivery port of 4-3-the second; 4-4-the first limited block; 4-5-second row aquaporin;
4-6-water inlet; 5-the first conduit; 6-swivel joint;
7-positioning joint; 7-1-the second limited block; 8-1-ring-type spacing preiection;
8-2-rear end end face; 9-nozzle; 10-sliding sleeve;
10-1-cyclic convex edge; 10-2-the first be through hole vertically; 11-current groove;
12-gland; 12-1-gland centre bore; 12-2-gland through hole;
13-the first creeps into housing; 13-1-the first gathering sill;
14-the first drilling rod connects housing; 15-the first feather key;
16-the first pad; 17-the second conduit; 18-seal cover;
18-1-seal cover centre bore; 19-filter screen; 20-end cap;
20-1-end cap central bore; 21-the second creeps into housing; 22-sleeve pipe;
23-the second drilling rod connects housing; 23-1-annular projection;
24-sealing mat; 25-the second gathering sill; 26-the second feather key;
27-the second pad; 28-the second creeps into cutter.
Detailed description of the invention
Embodiment 1
As depicted in figs. 1 and 2, the present invention includes drill bit housing and be arranged on the waterpower cutting assembly in drill bit housing, described drill bit is moved forward and backward by the transverse direction of described waterpower cutting assembly in drill bit housing and realizes creeping into and the switching of cutting, the front end outer side of described drill bit housing is provided with first and creeps into cutter 2, and the front end of described drill bit housing has the first row aquaporin 1 be communicated with drill bit housing cavity, described waterpower cutting assembly comprises the hydraulic spinning cutting head 4 connected successively, first conduit 5 and swivel joint 6, it is inner that described hydraulic spinning cutting head 4 is arranged on described drill bit housing forward end, the drill bit inner walls being positioned at described first conduit 5 periphery is provided with the first position-limit mechanism for limiting shift position backward and the position of rotation of described hydraulic spinning cutting head 4, the drill bit inner walls being positioned at described first position-limit mechanism rear is provided with for limiting and for forming the second position-limit mechanism of hermetically-sealed construction with described waterpower cutting assembly the position that moves forward of described waterpower cutting assembly, described hydraulic spinning cutting head 4 is provided with the nozzle 9 for jet water course.
Composition graphs 6 and Fig. 7, in the present embodiment, sliding sleeve 10 is set with outside described swivel joint 6, described sliding sleeve 10 outer wall is close to described drill bit inner walls and is arranged, the current groove 11 that multiple tracks is passed through from back to front for current is axially had on described sliding sleeve 10 outer wall or in described drill bit inner walls, the front end of described sliding sleeve 10 is provided with the cyclic convex edge 10-1 for being against on described second position-limit mechanism rear end end face, the rear end of described sliding sleeve 10 is connected with the gland 12 for being fixed on by described swivel joint 6 in described sliding sleeve 10, the center of described gland 12 has the gland centre bore 12-1 supplying water and flow through.Wherein, gland 12, for limiting the motion of described swivel joint 6 in sliding sleeve 10, namely prevents the present invention in cutting construction process, and described swivel joint 6 is subject to the effect of power and rotates.During concrete enforcement, current groove 11 is opened on described sliding sleeve 10 outer wall; Described swivel joint 6 have employed commercial high-speed high-pressure rotary joint, and the pressure of described high-speed high-pressure rotary joint is 30Mpa ~ 100Mpa, rotating speed is 800rpm ~ 4000rpm.
As shown in Figure 1, in the present embodiment, described drill bit housing creeps into housing 13 by first and creeps into back-connected first drilling rod of housing 13 and be connected housing 14 two parts with first and form, multiple described first row aquaporin 1 and multiple described first creeps into cutter 2 and is evenly arranged on the front end outer side that described first creeps into housing 13, described first position-limit mechanism is positioning joint 7 and is connected to described first to creep on the inwall of housing 13, described second position-limit mechanism is made up of the rear end end face being arranged on the ring-type spacing preiection 8-1 that described first creeps on housing 13 inwall, the rear end inwall of described first drilling rod connection housing 14 is provided with the drilling rod connecting thread 3 for being connected with drill rod thread.
Composition graphs 3, in the present embodiment, be positioned at first of described sliding sleeve 10 periphery to creep on housing 13 inwall and axially have the first gathering sill 13-1, on described sliding sleeve 10, radial direction has the first vertical through hole 10-2, is provided with the first feather key 15 matched with described first gathering sill 13-1 in the described first vertical through hole.Particularly, the shape of described first feather key 15 is " L " shape.
As shown in Figure 1, in the present embodiment, described first drilling rod connection housing 14 and described first creeps into housing 13 rear threads and is connected, and described first drilling rod connection housing 14 and described first creeps between housing 13 and is provided with the first pad 16, and described first pad 16 is rubber sheet gasket or red copper pad.The nose threads that described first drilling rod connects housing 14 is connected to the inside, rear end that described first creeps into housing 13, spring is provided with between the front end surface of described first drilling rod connection housing 14 and the rear end end face of described gland 12, spring is used for playing power-assisted effect when carrying out cutting construction, accelerates the second position-limit mechanism and described waterpower cutting assembly forms hermetically-sealed construction.
Composition graphs 4 and Fig. 5, in the present embodiment, described gland 12 has one or more gland through hole 12-2 around the periphery of described gland centre bore 12-1, facilitates being affectedly bashful and dismounting of gland 12.
In conjunction with Figure 12, Figure 13, Figure 14 and Figure 17, in the present embodiment, described hydraulic spinning cutting head 4 comprises cutting head housing 4-1, described cutting head housing 4-1 rear end is provided with water inlet 4-6, the front portion radial direction of described cutting head housing 4-1 has the first eccentric delivery port 4-2 and the second eccentric delivery port 4-3, described first eccentric delivery port 4-2 is all connected with described water inlet 4-6 with the second eccentric delivery port 4-3, the axis of described first eccentric delivery port 4-2 and the axis of the second eccentric delivery port 4-3 are two parallel lines, internal thread is provided with in described first eccentric delivery port 4-2 and in described second eccentric delivery port 4-3, the quantity of described nozzle 9 is two and is threaded in described first eccentric delivery port 4-2 and in the second eccentric delivery port 4-3 respectively, the rear end face of described cutting head housing 4-1 is provided with the first limited block 4-4.
In conjunction with Figure 15 and Figure 16, in the present embodiment, described first position-limit mechanism is provided with the second limited block 7-1 matched with described first limited block 4-4, the quantity of described first limited block 4-4 and the quantity of described second limited block 7-1 are two, and two described first limited block 4-4 and two interlaced settings of described second limited block 7-1.Periphery around described water inlet 4-6 on described cutting head housing 4-1 has one or more second row aquaporin-4-5.The front end face of described cutting head housing 4-1 is provided with one or more second and creeps into cutter 28.
In conjunction with Figure 18, in the present embodiment, in drilling construction process of the present invention, drill bit entirety is advanced, be arranged on second on hydraulic spinning cutting head 4 front end face and creep into the reaction force that cutter 28 is subject to coal seam or rock, make sliding sleeve 10, swivel joint 6, first conduit 5 and hydraulic spinning cutting head 4 creep into entirety in the inner chamber of housing 13 first and move backward, until the front end face that the front end face of hydraulic spinning cutting head 4 and first creeps into housing 13 is concordant, two the first limited block 4-4 and two the second limited block 7-1 actings in conjunction, the movement backward of hydraulic spinning cutting head 4 is restricted, now, flow to the water of drill bit, do not need very large pressure, most water flows through the first drilling rod successively and connects housing 14 inner chamber, first drilling rod connects housing 14 and the cavity between gland 12 and sliding sleeve 10, sliding sleeve 10 and first creeps into the cavity between housing 13, first conduit 5 and first creeps into the cavity between housing 13, cavity between first conduit 5 and seal cover centre bore 8-1, cavity between first conduit 5 and positioning joint 7, cavity between positioning joint 7 and hydraulic spinning cutting head 4, discharge through first row aquaporin 1 and second row aquaporin-4-5 again, play deslagging effect, another fraction water flows through the water inlet 4-6 that the first drilling rod connects housing 14 inner chamber, gland centre bore 12-1, swivel joint 6 inner chamber, the first conduit 5 inner chamber are delivered to hydraulic spinning cutting head 4 successively, discharging with the nozzle 9 be arranged in the second eccentric delivery port 4-3 through being arranged on the nozzle 9 in the first eccentric delivery port 4-2 again, playing deslagging effect.
In conjunction with Figure 19, after drilling construction terminates, by high-pressure hydraulic pump be connected to the drilling rod that the first drilling rod is connected on housing 14 and connect, now, water under high pressure enters into the first drilling rod and connects housing 14 inner chamber, due to the pressure impetus of water under high pressure, make sliding sleeve 10, swivel joint 6, first conduit 5 and hydraulic spinning cutting head 4 creep into entirety in the inner chamber of housing 13 first and move forward, until the front end face being arranged on the cyclic convex edge 10-1 of sliding sleeve 10 front end is against to be arranged on the first rear end end face creeping into the ring-type spacing preiection 8-1 on housing 13 inwall form hermetically-sealed construction, the front end of hydraulic spinning cutting head 4 has reached first and has crept into the outer and nozzle 9 of housing 13 and expose, now, whole water under high pressures flows through the first drilling rod successively and connects housing 14 inner chamber, gland centre bore 12-1, swivel joint 6 inner chamber, first conduit 5 inner chamber has also been expressed to the water inlet 4-6 of hydraulic spinning cutting head 4, the water under high pressure entering into hydraulic spinning cutting head 4 is subject to the centrifugal action of the first eccentric delivery port 4-2 and the second eccentric delivery port 4-3, drive hydraulic spinning cutting head 4 autorotation, simultaneously, water under high pressure is from the nozzle 9 be arranged on the first eccentric delivery port 4-2 and ejection in the nozzle 9 be arranged in the second eccentric delivery port 4-3, thus dissection is realized to coal body.
Embodiment 2
Composition graphs 8 ~ Figure 11, the present embodiment is as different from Example 1: the rear end of described swivel joint 6 is connected with the second conduit 17, the rear end of described second conduit 17 is connected with seal cover 18, the center of described seal cover 18 has the seal cover centre bore 18-1 supplying water and flow through, and the first half external diameter of described seal cover 18 is greater than latter half of external diameter and the front end surface of described seal cover 18 can be against on the rear end end face of described second position-limit mechanism.The rear end of described seal cover 18 is provided with the filter screen 19 covered on described seal cover 18 centre bore, and the rear end of described seal cover 18 is connected with the end cap 20 for fixing described filter screen 19, and the center of described end cap 20 has the end cap central bore 20-1 supplying water and flow through; Filter screen 19 can filter out the impurity in water, avoids impurities in water in Long-Time Service process to cause the shutoff of hydraulic spinning cutting head 4.Described end cap 20 is threaded with the rear end of described seal cover 18.Described drill bit housing creeps into housing 21 by second, creep into the back-connected sleeve pipe of housing 21 22 and be connected housing 23 3 part with back-connected second drilling rod of sleeve pipe 22 form with second, multiple described first row aquaporin 1 and multiple described first creeps into cutter 2 and is evenly arranged on the front end outer side that described second creeps into housing 21, described first position-limit mechanism is positioning joint 7 and is connected to described second to creep on the inwall of housing 21, described second position-limit mechanism is made up of the rear end end face 8-2 of the described sleeve pipe 22 extending into described second drilling rod connection housing 23 inside, described seal cover 18 is arranged on described second drilling rod and connects in housing 23, the rear end inwall of described second drilling rod connection housing 23 is provided with the drilling rod connecting thread 3 for being connected with drill rod thread.The rear end end face 8-2 of described sleeve pipe 22 is provided with sealed groove, in described sealed groove, is provided with the sealing mat 24 between the front end surface and the rear end end face 8-2 of described sleeve pipe 22 of described seal cover 18.The second drilling rod being positioned at described seal cover 18 periphery connects axis on housing 23 inwall and has multiple tracks second gathering sill 25, on described seal cover 18, radial direction has the second vertical through hole, be provided with in the described second vertical through hole with in the second gathering sill 25 described in multiple tracks arbitrarily together with the second feather key 26 of matching.Described sleeve pipe 22 and described second creeps into housing 21 rear threads and is connected, and described second drilling rod connects housing 23 and is connected with described sleeve pipe 22 rear threads, is provided with the second pad 27 between described second drilling rod connection housing 23 and described sleeve pipe 22.Described second drilling rod connection housing 23 rear inside wall is provided with annular projection 23-1, between described annular projection 23-1 and the rear end end face of described end cap 20, is provided with spring.All the other structures are all identical with embodiment 1.
In conjunction with Figure 20, in the present embodiment, in drilling construction process of the present invention, drill bit entirety is advanced, be arranged on second on hydraulic spinning cutting head 4 front end face and creep into the reaction force that cutter 28 is subject to coal seam or rock, make seal cover 18, second conduit 17, swivel joint 6, first conduit 5 is connected housing 23 with hydraulic spinning cutting head 4 at the second drilling rod, sleeve pipe 22 and second creeps into entirety in the inner chamber of housing 21 and moves backward, until the front end face that the front end face of hydraulic spinning cutting head 4 and second creeps into housing 21 is concordant, two the first limited block 4-4 and two the second limited block 7-1 actings in conjunction, the movement backward of hydraulic spinning cutting head 4 is restricted, now, flow to the water of drill bit, do not need very large pressure, most water flows through the second drilling rod successively and connects housing 23 inner chamber, end cap 20 is connected the cavity between housing 23 with the second drilling rod, seal cover 18 is connected the cavity between housing 23 with the second drilling rod, second conduit 17 is connected the cavity between housing 23 with the second drilling rod, cavity between second conduit 17 and sleeve pipe 22, cavity between swivel joint 6 and sleeve pipe 22, cavity between first conduit 5 and sleeve pipe 22, first conduit 5 and second creeps into the cavity between housing 21, cavity between first conduit 5 and positioning joint 7, cavity between positioning joint 7 and hydraulic spinning cutting head 4, discharge through first row aquaporin 1 and second row aquaporin-4-5 again, play deslagging effect, another fraction water flows through the water inlet 4-6 that the second drilling rod connects housing 23 inner chamber, end cap central bore 20-1, filter screen 19, seal cover centre bore 18-1, the second conduit 17 inner chamber, swivel joint 6 inner chamber, the first conduit 5 inner chamber are delivered to hydraulic spinning cutting head 4 successively, discharging with the nozzle 9 be arranged in the second eccentric delivery port 4-3 through being arranged on the nozzle 9 in the first eccentric delivery port 4-2 again, playing deslagging effect.
In conjunction with Figure 21, after drilling construction terminates, by high-pressure hydraulic pump be connected to the drilling rod that the second drilling rod is connected on housing 23 and connect, now, water under high pressure enters into the second drilling rod and connects housing 23 inner chamber, due to the pressure impetus of water under high pressure, make seal cover 18, second conduit 17, swivel joint 6, first conduit 5 is connected housing 23 with hydraulic spinning cutting head 4 at the second drilling rod, sleeve pipe 22 and second creeps into entirety in the inner chamber of housing 21 and moves forward, until the front end surface of seal cover 18 be against described sleeve pipe 22 rear end end face 8-2 on form hermetically-sealed construction, the front end of hydraulic spinning cutting head 4 has reached second and has crept into the outer and nozzle 9 of housing 21 and expose, now, whole water under high pressures flows through the second drilling rod successively and connects housing 23 inner chamber, end cap central bore 20-1, filter screen 19, seal cover centre bore 18-1, second conduit 17 inner chamber, swivel joint 6 inner chamber, first conduit 5 inner chamber has also been expressed to the water inlet 4-6 of hydraulic spinning cutting head 4, the water under high pressure entering into hydraulic spinning cutting head 4 is subject to the centrifugal action of the first eccentric delivery port 4-2 and the second eccentric delivery port 4-3, drive hydraulic spinning cutting head 4 autorotation, simultaneously, water under high pressure is from the nozzle 9 be arranged on the first eccentric delivery port 4-2 and ejection in the nozzle 9 be arranged in the second eccentric delivery port 4-3, thus dissection is realized to coal body.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (20)
1. a brill cuts one drill bit, it is characterized in that: comprise drill bit housing and be arranged on the waterpower cutting assembly in drill bit housing, described drill bit is moved forward and backward by the transverse direction of described waterpower cutting assembly in drill bit housing and realizes creeping into and the switching of cutting, the front end outer side of described drill bit housing is provided with first and creeps into cutter (2), and the front end of described drill bit housing has the first row aquaporin (1) be communicated with drill bit housing cavity, described waterpower cutting assembly comprises the hydraulic spinning cutting head (4) connected successively, first conduit (5) and swivel joint (6), it is inner that described hydraulic spinning cutting head (4) is arranged on described drill bit housing forward end, be positioned at the first position-limit mechanism peripheral drill bit inner walls of described first conduit (5) is provided with for limiting shift position backward and the position of rotation of described hydraulic spinning cutting head (4), the drill bit inner walls being positioned at described first position-limit mechanism rear is provided with for limiting and for forming the second position-limit mechanism of hermetically-sealed construction with described waterpower cutting assembly the position that moves forward of described waterpower cutting assembly, described hydraulic spinning cutting head (4) is provided with the nozzle (9) for jet water course.
2. bore according to one according to claim 1 and cut one drill bit, it is characterized in that: outside described swivel joint (6), be set with sliding sleeve (10), described sliding sleeve (10) outer wall is close to described drill bit inner walls and is arranged, the current groove (11) that multiple tracks is passed through from back to front for current is axially had on described sliding sleeve (10) outer wall or in described drill bit inner walls, the front end of described sliding sleeve (10) is provided with the cyclic convex edge (10-1) for being against on described second position-limit mechanism rear end end face, the rear end of described sliding sleeve (10) is connected with the gland (12) for being fixed on by described swivel joint (6) in described sliding sleeve (10), the center of described gland (12) has the gland centre bore (12-1) supplying water and flow through.
3. bore according to one according to claim 2 and cut one drill bit, it is characterized in that: described drill bit housing creeps into housing (13) by first and creeps into back-connected first drilling rod of housing (13) and be connected housing (14) two parts with first and form, multiple described first row aquaporin (1) and multiple described first is crept into cutter (2) and is evenly arranged on the front end outer side that described first creeps into housing (13), described first position-limit mechanism is positioning joint (7) and is connected to described first to creep on the inwall of housing (13), described second position-limit mechanism is made up of the rear end end face being arranged on the ring-type spacing preiection (8-1) that described first creeps on housing (13) inwall, the rear end inwall of described first drilling rod connection housing (14) is provided with the drilling rod connecting thread (3) for being connected with drill rod thread.
4. bore according to one according to claim 3 and cut one drill bit, it is characterized in that: be positioned at peripheral first the creeping on housing (13) inwall and axially have the first gathering sill (13-1) of described sliding sleeve (10), the upper radial direction of described sliding sleeve (10) has the first vertical through hole (10-2), is provided with the first feather key (15) matched with described first gathering sill (13-1) in the described first vertical through hole.
5. bore according to one according to claim 4 and cut one drill bit, it is characterized in that: the shape of described first feather key (15) is " L " shape.
6. bore according to one according to claim 4 and cut one drill bit, it is characterized in that: described first drilling rod connection housing (14) and described first creeps into housing (13) rear threads and is connected, described first drilling rod connection housing (14) and described first creeps between housing (13) and is provided with the first pad (16).
7. bore according to one according to claim 6 and cut one drill bit, it is characterized in that: the nose threads that described first drilling rod connects housing (14) is connected to the inside, rear end that described first creeps into housing (13), is provided with spring between the front end surface of described first drilling rod connection housing (14) and the rear end end face of described gland (12).
8. bore according to one according to claim 3 and cut one drill bit, it is characterized in that: described gland (12) has one or more gland through hole (12-2) around the periphery of described gland centre bore (12-1).
9. bore according to one according to claim 1 and cut one drill bit, it is characterized in that: the rear end of described swivel joint (6) is connected with the second conduit (17), the rear end of described second conduit (17) is connected with seal cover (18), the center of described seal cover (18) has the seal cover centre bore (18-1) supplying water and flow through, and the first half external diameter of described seal cover (18) is greater than latter half of external diameter and the front end surface of described seal cover (18) can be against on the rear end end face of described second position-limit mechanism.
10. bore according to one according to claim 9 and cut one drill bit, it is characterized in that: the rear end of described seal cover (18) is provided with the filter screen (19) covered on described seal cover (18) centre bore, the rear end of described seal cover (18) is connected with the end cap (20) for fixing described filter screen (19), and the center of described end cap (20) has the end cap central bore (20-1) supplying water and flow through.
11. cut one drill bit according to one brill according to claim 10, it is characterized in that: described end cap (20) is threaded with the rear end of described seal cover (18).
12. cut one drill bit according to one brill according to claim 10, it is characterized in that: described drill bit housing is by creeping into housing (21), form with creeping into housing (21) back-connected sleeve pipe (22) and be connected housing (23) three part with sleeve pipe (22) back-connected drilling rod, multiple described first row aquaporin (1) and multiple described first creep into cutter (2) be evenly arranged on described in creep into the front end outer side of housing (21), described first position-limit mechanism is for positioning joint (7) and creep on the inwall of housing (21) described in being connected to, described second position-limit mechanism is made up of the rear end end face (8-2) extending into the inner described sleeve pipe (22) of described drilling rod connection housing (23), described seal cover (18) is arranged on described drilling rod and connects in housing (23), the rear end inwall of described drilling rod connection housing (23) is provided with the drilling rod connecting thread (3) for being connected with drill rod thread.
13. cut one drill bit according to one brill according to claim 12, it is characterized in that: the rear end end face (8-2) of described sleeve pipe (22) is provided with sealed groove, in described sealed groove, be provided with the sealing mat (24) between front end surface and the rear end end face (8-2) of described sleeve pipe (22) being positioned at described seal cover (18).
14. cut one drill bit according to one brill according to claim 12, it is characterized in that: be positioned on peripheral drilling rod connection housing (23) inwall of described seal cover (18) and axially have multiple tracks gathering sill (25), the upper radial direction of described seal cover (18) has vertical through hole, be provided with in described vertical through hole with in gathering sill described in multiple tracks (25) arbitrarily together with the feather key (26) that matches.
15. cut one drill bit according to one brill according to claim 12, it is characterized in that: described sleeve pipe (22) is connected with described housing (21) rear threads of creeping into, described drilling rod connects housing (23) and is connected with described sleeve pipe (22) rear threads, is provided with pad (27) between described drilling rod connection housing (23) and described sleeve pipe (22).
16. cut one drill bit according to one brill according to claim 12, it is characterized in that: described drilling rod connection housing (23) rear inside wall is provided with annular projection (23-1), between the rear end end face of described annular projection (23-1) and described end cap (20), is provided with spring.
17. cut one drill bit according to the one brill described in claim arbitrary in claim 3 ~ 16, it is characterized in that: described hydraulic spinning cutting head (4) comprises cutting head housing (4-1), described cutting head housing (4-1) rear end is provided with water inlet (4-6), the front portion radial direction of described cutting head housing (4-1) has the first eccentric delivery port (4-2) and the second eccentric delivery port (4-3), described first eccentric delivery port (4-2) is all connected with described water inlet (4-6) with the second eccentric delivery port (4-3), the axis of described first eccentric delivery port (4-2) and the axis of the second eccentric delivery port (4-3) are two parallel lines, internal thread is provided with in described first eccentric delivery port (4-2) and in described second eccentric delivery port (4-3), the quantity of described nozzle (9) is two and is threaded in described first eccentric delivery port (4-2) and in the second eccentric delivery port (4-3) respectively, the rear end face of described cutting head housing (4-1) is provided with the first limited block (4-4).
18. cut one drill bit according to one brill according to claim 17, it is characterized in that: described first position-limit mechanism is provided with the second limited block (7-1) matched with described first limited block (4-4), the quantity of described first limited block (4-4) and the quantity of described second limited block (7-1) are two, and two described first limited blocks (4-4) and the interlaced setting of two described second limited blocks (7-1).
19. cut one drill bit according to one brill according to claim 17, it is characterized in that: described cutting head housing (4-1) has one or more second row aquaporin (4-5) around the periphery of described water inlet (4-6).
20. cut one drill bit according to one brill according to claim 17, it is characterized in that: the front end face of described cutting head housing (4-1) is provided with one or more second and creeps into cutter (28).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210371369.4A CN102877789B (en) | 2012-09-28 | 2012-09-28 | Drilling and cutting integrated drilling bit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210371369.4A CN102877789B (en) | 2012-09-28 | 2012-09-28 | Drilling and cutting integrated drilling bit |
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| CN102877789A CN102877789A (en) | 2013-01-16 |
| CN102877789B true CN102877789B (en) | 2015-06-10 |
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| CN201210371369.4A Expired - Fee Related CN102877789B (en) | 2012-09-28 | 2012-09-28 | Drilling and cutting integrated drilling bit |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103321670B (en) * | 2013-07-10 | 2015-03-18 | 四川大学 | Built-in drill stem temperature control automatic wind closing flame-retardant device |
| CN103527096A (en) * | 2013-10-22 | 2014-01-22 | 张晓银 | Mining drilling and cutting integrated drill bit |
| CN108868873B (en) * | 2018-06-25 | 2019-09-03 | 中煤科工集团重庆研究院有限公司 | A kind of longitudinal balance grooving release permeability improvement device for mash gas pumping drilling |
| CN111922417B (en) * | 2020-08-05 | 2024-03-15 | 西安凯特维尔能源科技有限公司 | Cutting machine in pipe |
| CN116220560B (en) * | 2023-05-10 | 2023-07-07 | 陕西延长石油矿业有限责任公司 | Intelligent drilling tool for weakly cemented stratum |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856601A (en) * | 1986-01-22 | 1989-08-15 | Raney Richard C | Drill bit with flow control means |
| CN201090139Y (en) * | 2007-10-11 | 2008-07-23 | 中国矿业大学 | Press control drill scalpel integration drilling bit |
| CN102213077A (en) * | 2011-05-25 | 2011-10-12 | 煤炭科学研究总院沈阳研究院 | Coal seam reaming system using three-dimensional (3D) swirling water jet and reaming and fracturing method for permeability enhancement |
| CN202227987U (en) * | 2011-09-19 | 2012-05-23 | 中国矿业大学 | Automatic switching water jet slotting combined type drill bit |
| CN202788619U (en) * | 2012-09-28 | 2013-03-13 | 西安美尼矿山设备科技有限公司 | Integral drill bit for drilling and cutting |
-
2012
- 2012-09-28 CN CN201210371369.4A patent/CN102877789B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856601A (en) * | 1986-01-22 | 1989-08-15 | Raney Richard C | Drill bit with flow control means |
| CN201090139Y (en) * | 2007-10-11 | 2008-07-23 | 中国矿业大学 | Press control drill scalpel integration drilling bit |
| CN102213077A (en) * | 2011-05-25 | 2011-10-12 | 煤炭科学研究总院沈阳研究院 | Coal seam reaming system using three-dimensional (3D) swirling water jet and reaming and fracturing method for permeability enhancement |
| CN202227987U (en) * | 2011-09-19 | 2012-05-23 | 中国矿业大学 | Automatic switching water jet slotting combined type drill bit |
| CN202788619U (en) * | 2012-09-28 | 2013-03-13 | 西安美尼矿山设备科技有限公司 | Integral drill bit for drilling and cutting |
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| CN102877789A (en) | 2013-01-16 |
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