CN102678040A - Drilling device and method for baseplate in coal mine roadway - Google Patents
Drilling device and method for baseplate in coal mine roadway Download PDFInfo
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- CN102678040A CN102678040A CN2012101471737A CN201210147173A CN102678040A CN 102678040 A CN102678040 A CN 102678040A CN 2012101471737 A CN2012101471737 A CN 2012101471737A CN 201210147173 A CN201210147173 A CN 201210147173A CN 102678040 A CN102678040 A CN 102678040A
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Abstract
The invention relates to the technical field of coal mining and discloses a drilling device and method for a baseplate in a coal mine roadway. The drilling device comprises a double-channel drill bit, a double-channel drill stem, a drilling rig, a hydraulic stand column, a sludge pump and a double-channel water faucet with three connectors, wherein the drilling rig is used for driving the double-channel drill stem to rotatably advance and lift; one of the three connectors of the double-channel water faucet, which is connected with the double-channel drill stem, can be freely rotated, and the other two connectors of the double-channel water faucet, which are connected with a high-pressure water pipe and a water sucking hose, can not be freely rotated; a first channel of the drill bit is connected with the high-pressure water pipe through a first channel of the drill stem and a first channel of the water faucet in sequence; and a second channel of the drill bit is connected with the water sucking hose through a second channel of the drill stem and a second channel of the water faucet in sequence. The drilling device realizes the continuous operation and fast deep well drilling in the drilling process of an anchor rod (rope) hole of the baseplate in the roadway, has strong slag discharging capacity and is simple, convenient and practical in operation; and the operating environment of the drilling device is harmless to human bodies and environments.
Description
Technical field
The present invention relates to the coal mining technical field, particularly relate to a kind of coal mine roadway base plate drilling equipment and method.
Background technology
Development is objective inexorable law to the underground coal resource exploitation to the deep by superficial part, and along with the coal mining degree of depth constantly increases, tunnel pucking phenomenon is serious all the more, becomes the key factor that influences stability of the roadway.Practical experience for many years shows: base plate anchor pole (rope) is reinforced to be not only and is administered the efficient ways of pucking, and the whole stability of roadway surrounding rock is played an important role.At first, because roadway floor special geological condition (existence of mud stone, chiltern mud stone etc.), existing construction equipment is when bottoming plate anchor cable hole, and pore-forming efficiency is extremely low, and bore diameter is big, and a series of adverse effect below producing:
1. anchor pole (rope) anchoring efficient is low;
2. base plate anchoring speed is unable to catch up with tunnelling speed, does not reach the effect that anchor pole (rope) is in time controlled floor rocks;
3. because the aperture is big, anchored force does not reach designing requirement;
4. use the cement paste anchoring, can't apply high pretightning force, the effect of anchor pole (rope) active support can not get fully playing;
5. support cost is more high.
Secondly, because no matter the residing particular surroundings in tunnel adopts hydraulic slag discharging or wind power slag-discharging when existing construction equipment creeps into the anchor cable hole, all can cause following influence:
1. deslagging difficulty during deep well drilling greatly reduces penetration rate;
2. carry when bore extracting drilling rod out, in the hole wall boring mud landing hole, cause residual a large amount of boring muds at the bottom of the hole, depth of pore forming reduces greatly;
3. existing deslagging mode is when creeping into darker hole, and the boring mud possibility bit freezing of can not arranging causes drill bit and drilling rod heavy wear, even the drilling rod locking;
4. abominable (the wind power slag-discharging of operating environment; Boring mud has filled the air whole tunnel, can't satisfy workman's personal safety, and the sewage of discharging in the hole of hydraulic slag discharging not only causes floor rocks intensity to reduce; And cause a large amount of ponding in the tunnel, relatively more difficult when other borings of construction;
5. wind power slag-discharging, bit wear is very fast, and when base plate ran into a spot of water, boring mud can't be discharged at all.
Summary of the invention
The technical problem that (one) will solve
The technical problem that the present invention will solve is how to improve roadway floor anchor pole (rope) hole drill to advance speed and improve deslagging effect in the hole.
(2) technical scheme
In order to solve the problems of the technologies described above; The present invention provides a kind of coal mine roadway base plate drilling equipment; Comprise binary channels drill bit, binary channels drilling rod, rig, hydraulic vertical prop, dredge pump and have the binary channels water tap of three connectors; Said rig is installed on the hydraulic vertical prop, and said binary channels drilling rod is installed on the rig, and said rig drives the rotation of binary channels drilling rod and advances and lifting; The front end of said binary channels drilling rod is connected with the binary channels drill bit; Its end is connected with a connector of binary channels water tap; Two other connector of said binary channels water tap is connected with soft suction hose with high-pressure water pipe respectively; Said soft suction hose is connected with the water inlet of dredge pump, and the delivery port of said dredge pump is connected with blow-off pipe; Said binary channels water tap can rotate freely with the connector that said binary channels drilling rod is connected, and its two other connector can not rotate freely; Said binary channels drilling rod comprises independently drilling rod first passage and drilling rod second channel; Said binary channels water tap comprises independently water tap first passage and water tap second channel; Said binary channels drill bit comprises independently drill bit first passage and drill bit second channel; Said drill bit first passage is connected with high-pressure water pipe with the water tap first passage through the drilling rod first passage successively, and said drill bit second channel is connected with said soft suction hose with the water tap second channel through the drilling rod second channel successively.
Wherein, said binary channels drilling rod is set to many, and adjacent binary channels drilling rod joins end to end, and the junction of said adjacent binary channels drilling rod is outer flat.
Wherein, Said binary channels drilling rod comprises pipe and drilling rod outer tube in the drilling rod; Pipe is positioned at the inside of said drilling rod outer tube in the said drilling rod; Leave first gap between pipe and the drilling rod outer tube in the said drilling rod, be provided with a plurality of first in said first gap and connect platform with one heart, the interior pipe of said drilling rod is connected platform with the drilling rod outer tube through said first with one heart to be fixed; Said first gap is the drilling rod first passage, and the inner chamber of pipe is the drilling rod second channel in the said drilling rod.
Wherein, the front end of said drilling rod outer tube and end are respectively equipped with the first outer pipe connector and the second outer pipe connector, and the front end of pipe and end are respectively equipped with the pipe connector and the second interior pipe connector in first in the said drilling rod; The said first outer pipe connector is provided with first external screw thread, and the said second outer pipe connector is provided with second internal thread that is complementary with said first external screw thread; Pipe connector is provided with the first annular inner groovy in said first, and the said second interior pipe connector is provided with the outer groove of second annular that is complementary with the said first annular inner groovy.
Wherein, Said binary channels drill bit is that scraper type is not got the core and double-channel drill bit; It comprises pipe and scraper in drill bit outer tube, the drill bit, and pipe is positioned at the inside of drill bit outer tube in the said drill bit, leaves second gap between pipe and the drill bit outer tube in the said drill bit; Be provided with a plurality of second in said second gap and connect platform with one heart, said drill bit outer tube is connected platform with the interior pipe of drill bit through said second with one heart to be fixed; Said second gap is the drill bit first passage, and the inner chamber of pipe is said drill bit second channel in the said drill bit, and the front end of said drill bit first passage is shut; The front end fixed installation scraper of said drill bit outer tube, the end of said drill bit outer tube is provided with the 3rd internal thread that is complementary with said first external screw thread, and the end of pipe is provided with the outer groove of the 3rd annular that is complementary with the said first annular inner groovy in the said drill bit; The tube wall of the front end of said drill bit outer tube is provided with inclined hole, and said inclined hole communicates with said drill bit first passage.
Wherein, on the front end circumference of said binary channels drill bit, be provided with equally distributed three scrapers, said inclined hole is made as three, lays respectively between said three scrapers; Each scraper is respectively the cuspated with a crooked inward angle, the tip position welding of said three scrapers together, the inboard of said three scrapers forms the return flow line of a back taper, said return flow line communicates with said drill bit second channel.
Wherein, the side of said each scraper is embedded with diamond compact respectively, and the tip position of said three scrapers is inlaid with hard alloy blocks or diamond composite block.
Wherein, said binary channels water tap comprises water jacket, axis of rotation and soft suction hose connector; Said axis of rotation comprises pipe and axis of rotation outer tube in the axis of rotation; Pipe is positioned at the inside of said axis of rotation outer tube in the said axis of rotation; Leave third space between pipe and the axis of rotation outer tube in the said axis of rotation; Be provided with a plurality of the 3rd in the said third space and connect platform with one heart, the interior pipe of said axis of rotation is connected platform with the axis of rotation outer tube through the said the 3rd with one heart to be fixed, and said third space is the water tap first passage; The end of said water tap first passage is shut, and the inner chamber of pipe is said water tap second channel in the said axis of rotation; Establish the clutch shaft bearing chamber and second bearing chamber in the said water jacket; The inboard of the said clutch shaft bearing chamber and second bearing chamber is respectively equipped with first water tight compartment and second water tight compartment; The front end of said axis of rotation outer tube and end are installed on the said clutch shaft bearing chamber and second bearing chamber through the said clutch shaft bearing and second bearing respectively; The hydroecium that forms between said axis of rotation and the water jacket seals through the water seal that is installed in said first water tight compartment, second water tight compartment; The front end of said axis of rotation outer tube and the place ahead that is positioned at said clutch shaft bearing are provided with annular boss; Said annular boss is positioned at the outside of said water jacket, and said axis of rotation outer tube terminal and the rear that is positioned at said second bearing are connected with nut, and said annular boss and nut limit the axial displacement of axis of rotation jointly; The front end of said axis of rotation is connected with the end of said drilling rod; The front end of said axis of rotation outer tube is provided with the screw thread all round that is complementary with said second internal thread, and the front end of pipe is provided with the Fourth Ring shape inner groovy that is complementary with the outer groove of said second annular in the said axis of rotation; Have first through hole and second through hole on the tube wall of said axis of rotation outer tube and water jacket, said second through hole is connected with said high-pressure water pipe through quick plug; One end of said soft suction hose connector adopts with the end of said water jacket and is threaded, and the other end is connected with said soft suction hose through gooseneck.
Wherein, said dredge pump adopts pneumatic diaphragm pump.
The present invention also provides a kind of coal mine roadway base plate boring method, comprising: the height of regulating hydraulic vertical prop makes it withstand back; Start rig and drive binary channels drilling rod rotation propelling and boring; When advancing boring; Open the stop valve and the dredge pump of high-pressure water pipe; Make high-pressure water pipe in the hole, inject flushing liquor through water tap first passage, drilling rod first passage and drill bit first passage successively, the flushing liquor that carries boring mud simultaneously under the effect of dredge pump successively outside soft suction hose, drill bit second channel, drilling rod second channel and water tap second channel tap; When boring arrives binary channels drilling rod extreme position, close rig, stop valve and dredge pump, the spreading that rerun behind the spreading binary channels drilling rod rig, stop valve and dredge pump carry out the binary channels drilling rod creeps into up to the boring completion.
(3) beneficial effect
A kind of coal mine roadway base plate drilling equipment and method that technique scheme provides, binary channels drill bit, binary channels drilling rod, rig, hydraulic vertical prop, dredge pump and have the binary channels water tap of three connectors, the drill bit first passage is connected with high-pressure water pipe with the water tap first passage through the drilling rod first passage successively; Be used in the hole, injecting flushing liquor, the drill bit second channel is connected with soft suction hose with the water tap second channel through the drilling rod second channel successively, is used for carrying in the extraction aperture flushing liquor of boring mud; Such scheme has been realized advancing working continuously in the process at roadway floor anchor pole (rope) hole drill; Guarantee to creep into fast, this practicality easy and simple to handle, and deslagging speed is fast; No ponding in the hole; Pore-forming is effective, and operating environment does not have injury to human body and environment, can realize creeping into fast of roadway floor mud stone, chiltern mud stone; Can realize that not only baseboard anchor cable reinforces fast, and can be used as the floor grouting hole and realize that floor grouting reinforces; Further, the binary channels drilling rod is provided with many, and adjacent binary channels drilling rod joins end to end, and can realize deep well drilling.
Description of drawings
Fig. 1 is the structural representation of a kind of coal mine roadway base plate of the present invention drilling equipment;
Fig. 2 is the connection layout of many binary channels drilling rods of the present invention;
Fig. 3 is the sectional view of binary channels drilling rod of the present invention;
Fig. 4 is the sectional view of A-A among Fig. 3;
Fig. 5 is the sectional view of B-B among Fig. 3;
Fig. 6 is the structural representation of binary channels drill bit of the present invention;
Fig. 7 is the sectional view of binary channels drill bit of the present invention;
Fig. 8 is the upward view of binary channels drill bit of the present invention;
Fig. 9 is the structural representation of binary channels water tap of the present invention;
Figure 10 is the structural representation of axis of rotation of the present invention;
Figure 11 is the sectional view of binary channels water tap of the present invention.
Wherein, 1, binary channels drill bit; 1a, drill bit outer tube; Pipe in 1b, the drill bit; 1c, scraper; 1d, diamond compact; 1e, hard alloy blocks; 1f, second connects platform with one heart; 1g, drill bit first passage; 1h, drill bit second channel; 1i, the 3rd internal thread; 1j, the outer groove of the 3rd annular; 1k, second seal groove; 2, binary channels drilling rod; 2a, drilling rod first passage; 2b, drilling rod second channel; Pipe in 2c, the drilling rod; 2d, drilling rod outer tube; 2e, the first outer pipe connector; 2f, first external screw thread; Pipe connector in the 2g, first; 2h, the first annular inner groovy; 2i, the second outer pipe connector; 2j, second internal thread; Pipe connector in the 2k, second; 2l, the outer groove of second annular; 2n, first seal groove; 2s, drilling rod front end first connect platform with one heart; 2t, drilling rod terminal first connect platform with one heart; 3, rig; 3a, hydraulic motor; 3b, clamper; 3c, slips; 4, hydraulic vertical prop; 5, dredge pump; 5a, blow-off pipe; 6, high-pressure water pipe; 7, soft suction hose; 8, binary channels water tap; 8a, water jacket; 8b, axis of rotation; Pipe in 8c, the axis of rotation; 8d, axis of rotation outer tube; 8e, the 3rd connects platform with one heart; 8f, gooseneck; 8g, fast plug; 8h, soft suction hose connector; 8i, clutch shaft bearing chamber; 8j, second bearing chamber; 8k, annular boss; 8l, nut; 8n, is screw thread all round; 8m, Fourth Ring shape inner groovy; 8p, packing ring; 8t, first water tight compartment; 8s, second water tight compartment; A, water tap first passage; B, water tap second channel; C, first through hole; D, second through hole; E, weld seam; F, hydroecium; G, inclined hole; H, the 3rd water tight compartment.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail.Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Like Fig. 1; A kind of coal mine roadway base plate drilling equipment of the present invention; Comprise binary channels drill bit 1, binary channels drilling rod 2, rig 3, hydraulic vertical prop 4, dredge pump 5 and have the binary channels water tap 8 of three connectors; Rig 3 is installed on the hydraulic vertical prop 4, and binary channels drilling rod 2 is installed on the rig 3, and rig 3 drives 2 rotations of binary channels drilling rod and advances and lifting; The front end of binary channels drilling rod 2 is connected with binary channels drill bit 1; Its end is connected with a connector of binary channels water tap 8; Two other connector of this binary channels water tap 8 is connected with soft suction hose 7 with high-pressure water pipe 6 respectively; Soft suction hose 7 is connected with the water inlet of dredge pump 5, and the delivery port of dredge pump 5 is connected with blow-off pipe 5a; The connector that binary channels water tap 8 is connected with binary channels drilling rod 2 can rotate freely, and its two other connector can not rotate freely; Binary channels drilling rod 2 comprises independently drilling rod first passage 2a and drilling rod second channel 2b; Binary channels water tap 8 comprises independently water tap first passage a and water tap second channel b; Drill bit 1 comprises independently drill bit first passage 1g and drill bit second channel 1h; Drill bit first passage 1g is connected with high-pressure water pipe 6 with water tap first passage a through drilling rod first passage 2a successively; Be used to inject high pressure washing liquid, drill bit second channel 1h is connected with soft suction hose 7 with water tap second channel b through drilling rod second channel 2b successively, is used for carrying in the extraction aperture flushing liquor of boring mud.The present invention advances to have realized in the process working continuously at roadway floor anchor pole (rope) hole drill, deep well drilling fast, practicality easy and simple to handle; And deslagging speed is fast, and pore-forming is effective, and drilling diameter is little; And no ponding in the hole, operating environment does not have injury to human body and environment, can realize creeping into fast of roadway floor mud stone, chiltern mud stone; Can realize that not only baseboard anchor cable reinforces fast, and can be used as the floor grouting hole and realize that floor grouting reinforces.
Preferably, in order to improve deslagging ability, dredge pump 5 can adopt pneumatic diaphragm pump, and adopt another effect of pneumatic diaphragm pump to be: because the self-priming time of pneumatic diaphragm pump is short, the deslagging particle is big, and can dally, and can avoid dredge pump 5 when idle running, to be damaged.Preferably, the diameter of binary channels drill bit 1 is 48-60mm; The diameter of binary channels drilling rod 2 is 40-50mm.
The detailed process that rig 3 drives the 2 rotation propellings of binary channels drilling rod is: rig 3 comprises hydraulic motor 3a, slips 3c, clamper 3b and jack; Binary channels drilling rod 2 can be installed on the rig 3 through clamper 3b and slips 3c; Slips 3c blocks the binary channels drilling rod, and clamper 3b is positioned at the below of slips 3c, plays the effect of guiding; Make binary channels drilling rod 2 as the crow flies or be an oblique angle and advance; The hydraulic motor 3a of rig 3 drives binary channels drilling rod 2 and is rotated, and drives propelling and the lifting that rig 3 is realized binary channels drilling rod 2 through jack, and the positive and negative running of hydraulic motor 3a can realize the loading and unloading of binary channels drilling rod 2.
In order to satisfy the requirement of anchor pole (rope) deep well drilling; The binary channels drilling rod 2 of present embodiment can be set to many; Adjacent binary channels drilling rod joins end to end; The junction of this adjacent binary channels drilling rod is outer flat, can prevent that this binary channels drilling rod 2 from blocking rig and influencing normally carrying out of work in propelling and lifting process, and is as shown in Figure 2.
As shown in Figure 3; The binary channels drilling rod 2 of present embodiment comprises pipe 2c and drilling rod outer tube 2d in the drilling rod; Pipe 2c is positioned at the inside of drilling rod outer tube 2d in the drilling rod; Leave first gap between pipe 2c and the drilling rod outer tube 2d in the drilling rod, be provided with a plurality of first in this first gap and connect platform with one heart, pipe 2c and drilling rod outer tube 2d first are connected platform and fix with one heart through this in the drilling rod; First gap is drill bit first passage 1g, and the inner chamber of pipe 2c is drill bit second channel 1h in the drilling rod.
Preferably, the front end of the drilling rod outer tube 2d of present embodiment and end are respectively equipped with the first outer pipe connector 2e and the second outer pipe connector 2i, and the front end of pipe 2c and end are respectively equipped with the pipe connector 2g and the second interior pipe connector 2k in first in the drilling rod; Wherein, The first outer pipe connector 2e is provided with the first external screw thread 2f; The second outer pipe connector 2i is provided with the second internal thread 2j that is complementary with this first external screw thread 2f; Pipe connector 2g is provided with the first annular inner groovy 2h in first, and the second interior pipe connector 2k is provided with the outer groove 2l of second annular that is complementary with this first annular inner groovy 2h; When head and the tail connect between the binary channels drilling rod; With wherein the second outer pipe connector 2i and the second interior pipe connector 2k of a binary channels drilling rod are connected with the first outer pipe connector 2e and the first interior pipe connector 2g of another root binary channels drilling rod; After the connection; Realize being threaded between the second outer pipe connector 2i of these two binary channels drilling rods and the first outer pipe connector 2e, realize inserting connection between the pipe connector 2g in the second interior pipe connector 2k and first.Further, install for ease, the first outer pipe connector 2e and the second outer pipe connector 2i can be the weldment of drilling rod outer tube 2d, and the requirement of strength of the material of the first outer pipe connector 2e and the second outer pipe connector 2i is higher than drilling rod outer tube 2d; Managing 2c in pipe connector 2g and the second interior pipe connector 2k and the drill bit in first is one of the forming.Preferably; Week of the front end of drilling rod outer tube 2d upwards with second outside pipe connector 2i with the week of the junction of drilling rod outer tube 2 three the first concentric platforms that are connected are set respectively upwards; The first concentric connection platform that is positioned at the front end of drilling rod outer tube 2d is the drilling rod front end first connector 2s; The second outer pipe connector 2i is that drilling rod terminal first connects platform 2t with the first concentric platform that is connected of the junction of the end of drilling rod outer tube 2d; Because the structural limitations of the connector of the front end of above-mentioned binary channels drilling rod and end makes the drilling rod front end first connector 2s littler than the size that drilling rod terminal first connects platform 2t, like Fig. 4 and shown in Figure 5.
Further: in order to strengthen the sealing between binary channels drilling rod and the binary channels drilling rod; The terminal certain distance of pipe connector 2k is provided with the first seal groove 2n in distance second; Establish first sealing ring in this first seal groove 2n; The replacing of first sealing ring for ease, the aperture of the end of pipe connector 2k flushes in the end of the second outer pipe connector 2i and second, and the position in the aperture of the end of pipe connector 2k is 2～6mm in the first sealing ring 2n distance second; Further, the head and the tail between the binary channels drilling rod are installed and are connected for ease, and the front end of the first outer pipe connector 2e is outstanding than the front end of the first interior pipe connector 2g, and its outstanding distance can be 8～15mm.
Like Fig. 6, Fig. 7 and shown in Figure 8; The binary channels drill bit 1 of present embodiment is not got the core and double-channel drill bit for scraper type; It comprises pipe 1b and scraper 1c in drill bit outer tube 1a, the drill bit, and pipe 1b is positioned at the inside of drill bit outer tube 1a in the drill bit, leaves second gap between pipe 1b and the drill bit outer tube 1a in the drill bit; Be provided with a plurality of second in this second gap and connect platform 1f with one heart; Drill bit outer tube 1a is connected platform 1f with one heart with the interior pipe of drill bit 1b employing second to be fixed, and this second gap is drill bit first passage 1g, and this drill bit first passage 1g communicates with drilling rod first passage 2a; The inner chamber of pipe 1b is drill bit second channel 1h in the drill bit, and the front end of drill bit first passage 1g adopts the electric welding welding to shut, and the e among Fig. 7 and Fig. 8 is a weld seam.At the front end fixed installation scraper 1c of drill bit outer tube 1a, the end of drill bit outer tube 1a is provided with the 3rd internal thread 1i that is complementary with first external screw thread, and the end of pipe 1b is provided with the outer groove 1j of the 3rd annular that is complementary with the first annular inner groovy in the drill bit; The tube wall of the front end of drill bit outer tube 1a is provided with inclined hole g, and this inclined hole g communicates with drill bit first passage 1g, is used in boring, injecting flushing liquor.When drill bit 1 is connected with drilling rod 2; The front end of drilling rod 2 is inserted the end of drill bit 1; At this moment, the first outer pipe connector 2e adopts with the end of drill bit outer tube 1a and is threaded, and the first interior pipe connector 2g adopts to insert with the end of the interior pipe of drill bit 1b and is connected; Wherein, the junction of the first outer pipe connector 2e and drill bit outer tube 1a is outer flat.
Preferably, scraper 1c can be set on the front end circumference of binary channels drill bit 1 equally distributed three, and inclined hole g also is made as three, lays respectively between these three scrapers.Size according to scraper 1c on the side of these three scraper 1c can be embedded with a plurality of diamond compact 1d respectively; Be embedded with two and half diamond compact 1d in the present embodiment; Half diamond compact 1d wherein is installed in the tip of scraper 1c, can improve the sharpness of scraper 1c.Each scraper 1c be respectively one have an inward crooked angle cuspated, the tip position welding of these three scrapers together, and the inboard of these three scrapers forms the return flow line of a back taper, this return flow line communicates with the drill bit second channel.Further; Be inlaid with hard alloy blocks 1e or diamond composite block at the tip position of these three scraper 1c; Present embodiment preferentially adopts hard alloy blocks 1e; Reason is: because it is not high to be positioned at the desired intensity in tip position, in order to reduce cost, adopt hard alloy blocks can satisfy the instructions for use of boring work at the tip position of these three scraper 1c.
Have the discharge of the flushing liquor of boring mud for ease; The inner chamber of the front end of pipe 1b is an open design in the drill bit of present embodiment; Flushing liquor enters in the hole through inclined hole g; Wash boring and cool off binary channels drill bit 1 after, the flushing liquor that carries boring mud gets into pipe 1b in the drill bit of binary channels drill bit 1, under the effect of dredge pump 5, will carry rapidly outside the flushing liquor tap of boring mud.Further; In order to strengthen the sealing between binary channels drilling rod and the binary channels drill bit, be provided with the second seal groove 1k in the end-to-end distance of drill bit outer tube 1a from its aperture one segment distance, this second seal groove 1k is provided with second sealing ring; Further; Change second sealing ring for ease, the aperture of the end of pipe 1b flushes in drill bit outer tube 1a and the drill bit, and second sealing ring is 2～6mm apart from the position in the aperture of the end of pipe 1b in the drill bit.
Like Fig. 9, Figure 10 and shown in Figure 11, the binary channels water tap 8 of present embodiment also comprises water jacket 8a, axis of rotation 8b and soft suction hose connector 8h.Axis of rotation 8b comprises pipe 8c and axis of rotation outer tube 8d in the axis of rotation; Pipe 8c is positioned at the inside of axis of rotation outer tube 8d in the axis of rotation; Leave third space between pipe 8c and the axis of rotation outer tube 8d in the axis of rotation; Be provided with a plurality of the 3rd in this third space and connect platform 8e with one heart, the interior pipe of axis of rotation 8c is connected platform 8e with axis of rotation outer tube 8d through the 3rd with one heart to be fixed, and this third space is above-mentioned water tap first passage a; The end of this water tap first passage a adopts the electric welding welding to shut, and the inner chamber of pipe 8c is water tap second channel b in the rotation.Wherein, Water tap first passage a communicates with drilling rod first passage 2a and drill bit first passage 1g; Be used in boring, injecting flushing liquor, water tap second channel b communicates with drilling rod second channel 2b and drill bit second channel 1h, is used for carrying in the extraction aperture flushing liquor of boring mud.
Establish the clutch shaft bearing chamber 8i and the second bearing chamber 8j in the water jacket 8a; The inboard of the clutch shaft bearing chamber 8i and second bearing chamber 8 is respectively equipped with the first water tight compartment 8t and the second water tight compartment 8s; The front end of axis of rotation outer tube 8d and end are installed on the clutch shaft bearing chamber 8i and the second bearing chamber 8j through the clutch shaft bearing and second bearing respectively, and the hydroecium f that forms between axis of rotation 8b and the water jacket 8a seals through the water seal that is installed in the first water tight compartment 8t and the second water tight compartment 8s.The front end of axis of rotation outer tube 8d and the place ahead that is positioned at clutch shaft bearing are provided with annular boss 8k; This annular boss 8k is positioned at the outside of water jacket 8a; Axis of rotation outer tube 8d terminal and the rear that is positioned at second bearing are connected with nut 8l, and annular boss 8k and nut 8l limit the axial displacement of axis of rotation 8b jointly; Further, be provided with packing ring 8p in the junction of annular boss 8k and water jacket 8a.
The front end of axis of rotation 8b is a wherein connector of binary channels water tap 8, is connected with the end of binary channels drilling rod 2, and pipe 8c can rotate with drilling rod 2 in axis of rotation outer tube 8d and the axis of rotation, and water jacket 8a is non-rotatable; The front end of axis of rotation outer tube 8d is provided with the screw thread 8n all round that is complementary with the second internal thread 2j, and the front end of pipe 8c is provided with the Fourth Ring shape inner groovy 8m that is complementary with the outer groove 2l of second annular in the axis of rotation.When this binary channels water tap 8 is connected with drilling rod 2; The front end of binary channels water tap 8 is inserted the end of drilling rod 2; At this moment, the front end of axis of rotation outer tube 8d adopts with the second outer pipe connector 2i and is threaded, and the front end of pipe 8c and the second interior pipe connector 2k adopt to insert and be connected in the axis of rotation.
Soft suction hose connector 8h is second connector of binary channels water tap 8; The one of which end adopts with the end of water jacket 8a and is threaded; The other end is connected with soft suction hose 7 through gooseneck 8f; Be specially: the end at water jacket 8a has internal thread, is provided with the external screw thread that is complementary with this internal thread at the front end of soft suction hose connector 8h, and gooseneck 8f adopts the second quick connector 8t to be connected with soft suction hose 7 further.Have first through hole and the second through hole c, d on the tube wall of axis of rotation outer tube 8d and water jacket 8a, the second through hole d is connected with high-pressure water pipe 6 through the first fast plug 8g, and this second through hole d is the 3rd connector of binary channels water tap 8.Further, with being made as recessed inward annular groove on the circumference that is positioned at first through hole c place on the axis of rotation outer tube 8d, thereby increased the space of hydroecium f.
At the end of axis of rotation 8b, pipe 8c is outstanding than axis of rotation outer tube 8d in the axis of rotation; At the front end of axis of rotation 8b, the aperture of the front end of axis of rotation outer tube 8d is outstanding than pipe 8c's in the axis of rotation, so that be connected with the end installation of drilling rod 2.
Further; The flushing liquor that contains boring mud for fear of the end of axis of rotation 8b flows among the hydroecium f between water jacket 8a and the axis of rotation outer tube 8d and influences the operate as normal of the second bearing chamber 8j, between the end of axis of rotation 8b and soft suction hose connector 8h, is provided with the 3rd water tight compartment h and is furnished with supporting water seal.
Coal mine roadway base plate boring method provided by the invention; Comprise: the height of regulating hydraulic vertical prop 4 makes it withstand back; Start rig 3 and drive 2 rotation propelling and the borings of binary channels drilling rod; When advancing boring; Open the stop valve and the dredge pump 5 of high-pressure water pipe 6, make high-pressure water pipe in the hole, inject flushing liquor through water tap first passage a, drilling rod first passage 2a and drill bit first passage 1g successively, the flushing liquor that carries boring mud simultaneously under the effect of dredge pump 5 successively outside soft suction hose 7, drill bit second channel 1h, drilling rod second channel 2b and water tap second channel b tap; When boring arrives binary channels drilling rod 2 extreme positions (this extreme position is 2 length that can advance and hole of drilling rod); Close rig 3, stop valve and the dredge pump 5 of rig, the spreading that the rig 3 that reruns behind the spreading binary channels drilling rod 2, stop valve and dredge pump 5 carry out binary channels drilling rod 2 creeps into up to boring and accomplishes.
Concrete boring procedure is: the first step; Stablize rig, make hydraulic vertical prop 4 firmly withstand back, make that rig 3 is stable; Connect the blow-off pipe 5a between dredge pump 5 and the soil pipe; Connect the soft suction hose 7 between dredge pump 5 and the binary channels water tap 8, connect the high-pressure water pipe 6 on the binary channels water tap 8, and the pipeline and the circuit that connect the required connection of rig 3 and dredge pump 5 self; Second step; Binary channels drilling rod 2 is installed in rig 3 slips 3a and the clamper 3b; At the front end of binary channels drilling rod 2 binary channels drill bit 1 is installed then, at the end of binary channels drilling rod 2 the binary channels water tap 8 of connecting soft suction hose 7 and high-pressure water pipe 6 is installed at last, so far install; The 3rd step, move successively dredge pump 5, rig 3 hydraulic motor 3a, open high-pressure water pipe 6 stop valve, start rig 3 and block binary channels drilling rod 2 and be rotated and advance boring; The 4th step; Rig 3 stop the rotation propelling, close high-pressure water pipe 6 stop valve, unload binary channels water tap 8, spreading binary channels drilling rod 2, reinstall binary channels water tap 8 at the end of binary channels drilling rod 2, open high-pressure water pipe 6 stop valve, start rig 3 rotation and advance, realize that the spreading of binary channels drilling rod 2 creeps into; In the 5th step, boring reaches and stops the rig rotation after the projected depth and advance, close the high-pressure water pipe stop valve, stop closing dredge pump 5 slightly for a moment, unload binary channels water tap 8, promote binary channels drilling rod 2 and expose clamper 3b, clamper 3b to binary channels drilling rod connector place and step up binary channels drilling rod 2, counter-rotating rig 3, realize the dismounting of binary channels drilling rod 2 and binary channels drill bit 1 successively; The 6th step, move rig 3, carry out the construction of next boring.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from know-why of the present invention; Can also make some improvement and replacement, these improvement and replacement also should be regarded as protection scope of the present invention.
Claims (10)
1. coal mine roadway base plate drilling equipment; It is characterized in that; Comprise binary channels drill bit, binary channels drilling rod, rig, hydraulic vertical prop, dredge pump and have the binary channels water tap of three connectors; Said rig is installed on the hydraulic vertical prop, and said binary channels drilling rod is installed on the rig, and said rig drives the rotation of binary channels drilling rod and advances and lifting; The front end of said binary channels drilling rod is connected with the binary channels drill bit; Its end is connected with a connector of binary channels water tap; Two other connector of said binary channels water tap is connected with soft suction hose with high-pressure water pipe respectively; Said soft suction hose is connected with the water inlet of dredge pump, and the delivery port of said dredge pump is connected with blow-off pipe; Said binary channels water tap can rotate freely with the connector that said binary channels drilling rod is connected, and its two other connector can not rotate freely;
Said binary channels drilling rod comprises independently drilling rod first passage and drilling rod second channel; Said binary channels water tap comprises independently water tap first passage and water tap second channel; Said binary channels drill bit comprises independently drill bit first passage and drill bit second channel; Said drill bit first passage is connected with high-pressure water pipe with the water tap first passage through the drilling rod first passage successively, and said drill bit second channel is connected with said soft suction hose with the water tap second channel through the drilling rod second channel successively.
2. coal mine roadway base plate drilling equipment as claimed in claim 1 is characterized in that said binary channels drilling rod is set to many, and adjacent binary channels drilling rod joins end to end, and the junction of said adjacent binary channels drilling rod is outer flat.
3. coal mine roadway base plate drilling equipment as claimed in claim 1; It is characterized in that; Said binary channels drilling rod comprises pipe and drilling rod outer tube in the drilling rod, and pipe is positioned at the inside of said drilling rod outer tube in the said drilling rod, leaves first gap between pipe and the drilling rod outer tube in the said drilling rod; Be provided with a plurality of first in said first gap and connect platform with one heart, the interior pipe of said drilling rod is connected platform with the drilling rod outer tube through said first with one heart to be fixed; Said first gap is the drilling rod first passage, and the inner chamber of pipe is the drilling rod second channel in the said drilling rod.
4. coal mine roadway base plate drilling equipment as claimed in claim 3; It is characterized in that; The front end of said drilling rod outer tube and end are respectively equipped with the first outer pipe connector and the second outer pipe connector, and the front end of pipe and end are respectively equipped with the pipe connector and the second interior pipe connector in first in the said drilling rod; The said first outer pipe connector is provided with first external screw thread, and the said second outer pipe connector is provided with second internal thread that is complementary with said first external screw thread; Pipe connector is provided with the first annular inner groovy in said first, and the said second interior pipe connector is provided with the outer groove of second annular that is complementary with the said first annular inner groovy.
5. coal mine roadway base plate drilling equipment as claimed in claim 4; It is characterized in that said binary channels drill bit is that scraper type is not got the core and double-channel drill bit, it comprises pipe and scraper in drill bit outer tube, the drill bit; Pipe is positioned at the inside of drill bit outer tube in the said drill bit; Leave second gap between pipe and the drill bit outer tube in the said drill bit, be provided with a plurality of second in said second gap and connect platform with one heart, said drill bit outer tube is connected platform with the interior pipe of drill bit through said second with one heart to be fixed; Said second gap is the drill bit first passage, and the inner chamber of pipe is said drill bit second channel in the said drill bit, and the front end of said drill bit first passage is shut;
The front end fixed installation scraper of said drill bit outer tube, the end of said drill bit outer tube is provided with the 3rd internal thread that is complementary with said first external screw thread, and the end of pipe is provided with the outer groove of the 3rd annular that is complementary with the said first annular inner groovy in the said drill bit;
The tube wall of the front end of said drill bit outer tube is provided with inclined hole, and said inclined hole communicates with said drill bit first passage.
6. coal mine roadway base plate drilling equipment as claimed in claim 5 is characterized in that, on the front end circumference of said binary channels drill bit, is provided with equally distributed three scrapers, and said inclined hole is made as three, lays respectively between said three scrapers; Each scraper is respectively the cuspated with a crooked inward angle, the tip position welding of said three scrapers together, the inboard of said three scrapers forms the return flow line of a back taper, said return flow line communicates with said drill bit second channel.
7. coal mine roadway base plate drilling equipment as claimed in claim 6 is characterized in that the side of said each scraper is embedded with diamond compact respectively, and the tip position of said three scrapers is inlaid with hard alloy blocks or diamond composite block.
8. coal mine roadway base plate drilling equipment as claimed in claim 4 is characterized in that said binary channels water tap comprises water jacket, axis of rotation and soft suction hose connector;
Said axis of rotation comprises pipe and axis of rotation outer tube in the axis of rotation; Pipe is positioned at the inside of said axis of rotation outer tube in the said axis of rotation; Leave third space between pipe and the axis of rotation outer tube in the said axis of rotation; Be provided with a plurality of the 3rd in the said third space and connect platform with one heart, the interior pipe of said axis of rotation is connected platform with the axis of rotation outer tube through the said the 3rd with one heart to be fixed, and said third space is the water tap first passage; The end of said water tap first passage is shut, and the inner chamber of pipe is said water tap second channel in the said axis of rotation;
Establish the clutch shaft bearing chamber and second bearing chamber in the said water jacket; The inboard of the said clutch shaft bearing chamber and second bearing chamber is respectively equipped with first water tight compartment and second water tight compartment; The front end of said axis of rotation outer tube and end are installed on the said clutch shaft bearing chamber and second bearing chamber through the said clutch shaft bearing and second bearing respectively; The hydroecium that forms between said axis of rotation and the water jacket seals through the water seal that is installed in said first water tight compartment, second water tight compartment; The front end of said axis of rotation outer tube and the place ahead that is positioned at said clutch shaft bearing are provided with annular boss; Said annular boss is positioned at the outside of said water jacket, and said axis of rotation outer tube terminal and the rear that is positioned at said second bearing are connected with nut, and said annular boss and nut limit the axial displacement of axis of rotation jointly;
The front end of said axis of rotation is connected with the end of said drilling rod; The front end of said axis of rotation outer tube is provided with the screw thread all round that is complementary with said second internal thread, and the front end of pipe is provided with the Fourth Ring shape inner groovy that is complementary with the outer groove of said second annular in the said axis of rotation;
Have first through hole and second through hole on the tube wall of said axis of rotation outer tube and water jacket, said second through hole is connected with said high-pressure water pipe through quick plug;
One end of said soft suction hose connector adopts with the end of said water jacket and is threaded, and the other end is connected with said soft suction hose through gooseneck.
9. coal mine roadway base plate drilling equipment as claimed in claim 1 is characterized in that, said dredge pump adopts pneumatic diaphragm pump.
10. a coal mine roadway base plate boring method is characterized in that, comprising: the height of regulating hydraulic vertical prop makes it withstand back; Start rig and drive binary channels drilling rod rotation propelling and boring; When advancing boring; Open the stop valve and the dredge pump of high-pressure water pipe; Make high-pressure water pipe in the hole, inject flushing liquor through water tap first passage, drilling rod first passage and drill bit first passage successively, the flushing liquor that carries boring mud simultaneously under the effect of dredge pump successively outside soft suction hose, drill bit second channel, drilling rod second channel and water tap second channel tap; When boring arrives binary channels drilling rod extreme position, close rig, stop valve and dredge pump, the spreading that rerun behind the spreading binary channels drilling rod rig, stop valve and dredge pump carry out the binary channels drilling rod creeps into up to the boring completion.
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| CN201210147173.7A CN102678040B (en) | 2012-05-11 | 2012-05-11 | Drilling device and method for baseplate in coal mine roadway |
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| CN201210147173.7A CN102678040B (en) | 2012-05-11 | 2012-05-11 | Drilling device and method for baseplate in coal mine roadway |
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