CN102678040B - 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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- CN102678040B CN102678040B CN201210147173.7A CN201210147173A CN102678040B CN 102678040 B CN102678040 B CN 102678040B CN 201210147173 A CN201210147173 A CN 201210147173A CN 102678040 B CN102678040 B CN 102678040B
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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 Coal Mining Technology field, particularly relate to a kind of baseboard of coal mine roadway drilling equipment and method.
Background technology
Underground coal resource exploitation is objective inexorable law by superficial part to deep development, and along with the coal mining degree of depth constantly increases, Floor Heave in Roadway phenomenon is serious all the more, becomes the key factor that affects stability of the roadway.Practical experience for many years shows: base plate anchor pole (rope) is reinforced to be not only and administered the most effective method of pucking, and the stability of roadway surrounding rock integral body is played an important role.First, due to the special geological conditions of roadway floor (existence of mud stone, Sandy Silt etc.), existing construction equipment is when bottoming plate anchor cable hole, and pore-forming efficiency is extremely low, and bore diameter is large, and produces following a series of adverse effect:
1. anchor pole (rope) anchoring efficiency 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 controlled floor rocks in time;
3. because aperture is large, anchored force does not reach the requirement of design;
4. use cement paste anchoring, cannot apply high pretightning force, the effect of anchor pole (rope) active support can not get fully playing;
5. support cost is more high.
Secondly, due to the residing particular surroundings in tunnel, when existing construction equipment creeps into anchor cable hole, no matter adopt hydraulic slag discharging or wind power slag-discharging, all can cause following impact:
1. deslagging difficulty during deep well drilling, greatly reduces penetration rate;
2. carry while bore extracting drilling rod out, in hole wall boring mud landing hole, cause residual a large amount of boring muds at the bottom of 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 drilling rod locking;
4. severe (the wind power slag-discharging of operating environment, boring mud has filled the air whole tunnel, cannot meet workman's personal safety, and the sewage of discharging in the hole of hydraulic slag discharging not only causes floor rocks strength decreased, and cause a large amount of ponding in tunnel, more difficult when other borings of construction;
5. wind power slag-discharging, bit wear is very fast, and when base plate runs into a small amount of water, boring mud cannot be discharged at all.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is how to improve roadway floor anchor pole (rope) hole rate of penetration and improve deslagging effect in hole.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of baseboard of coal mine roadway drilling equipment, comprise binary channels drill bit, binary channels drilling rod, rig, hydraulic vertical prop, dredge pump and there is the Double-way water tap of three connectors, described rig is arranged on hydraulic vertical prop, described binary channels drilling rod is arranged on rig, and described rig drives the rotation of binary channels drilling rod advance and promote; The front end of described binary channels drilling rod is connected with binary channels drill bit, its end is connected with a connector of Double-way water tap, two other connector of described Double-way water tap is connected with soft suction hose with high-pressure water pipe respectively, described soft suction hose is connected with the water inlet of dredge pump, and the delivery port of described dredge pump is connected with blow-off pipe; Described Double-way water tap can rotate freely with the connector that described binary channels drilling rod is connected, and its two other connector can not rotate freely; Described binary channels drilling rod comprises independently drilling rod first passage and drilling rod second channel, described Double-way water tap comprises independently water tap first passage and water tap second channel, described binary channels drill bit comprises independently drill bit first passage and drill bit second channel, described drill bit first passage is connected with high-pressure water pipe with water tap first passage by drilling rod first passage successively, and described drill bit second channel is connected with described soft suction hose with water tap second channel by drilling rod second channel successively.
Wherein, described binary channels drilling rod is set to many, and adjacent binary channels drilling rod joins end to end, and the junction of described adjacent binary channels drilling rod is outer flat.
Wherein, described binary channels drilling rod comprises drilling rod inner tube and drilling rod outer tube, described drilling rod inner tube is positioned at the inside of described drilling rod outer tube, between described drilling rod inner tube and drilling rod outer tube, leave the first gap, in described the first gap, be provided with a plurality of first concentric connected unit, described drilling rod inner tube and drilling rod outer tube are fixed by the described first concentric connected unit; Described the first gap is drilling rod first passage, and the inner chamber of described drilling rod inner tube is drilling rod second channel.
Wherein, the front end of described 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 described drilling rod inner tube and end are respectively equipped with the first interior pipe connector and the second interior pipe connector; Described the first outer pipe connector is provided with the first external screw thread, and described the second outer pipe connector is provided with the second internal thread matching with described the first external screw thread; Described the first interior pipe connector is provided with the first annular inner groovy, and described the second interior pipe connector is provided with the outer groove of the second annular matching with described the first annular inner groovy.
Wherein, described binary channels drill bit is that scraper type is not got core and double-channel drill bit, it comprises drill bit outer tube, drill bit inner tube and scraper, described drill bit inner tube is positioned at the inside of drill bit outer tube, between described drill bit inner tube and drill bit outer tube, leave the second gap, in described the second gap, be provided with a plurality of second concentric connected unit, described drill bit outer tube and drill bit inner tube are fixed by the described second concentric connected unit; Described the second gap is drill bit first passage, and the inner chamber of described drill bit inner tube is described drill bit second channel, and the front end of described drill bit first passage is shut; The front end fixed installation scraper of described drill bit outer tube, the end of described drill bit outer tube is provided with the 3rd internal thread matching with described the first external screw thread, and the end of described drill bit inner tube is provided with the outer groove of the 3rd annular matching with described the first annular inner groovy; The tube wall of the front end of described drill bit outer tube is provided with inclined hole, and described inclined hole communicates with described drill bit first passage.
Wherein, be provided with equally distributed three scrapers on the front end circumference of described binary channels drill bit, described inclined hole is made as three, lays respectively between described three scrapers; Each scraper is respectively has a tip shape for crooked angle inward, and together, the inner side of described three scrapers forms the return flow line of a back taper in the tip position welding of described three scrapers, and described return flow line communicates with described drill bit second channel.
Wherein, the side of described each scraper is embedded with respectively diamond compact, and the tip position of described three scrapers is inlaid with hard alloy blocks or diamond composite block.
Wherein, described Double-way water tap comprises water jacket, axis of rotation and soft suction hose connector, described axis of rotation comprises axis of rotation inner tube and axis of rotation outer tube, described axis of rotation inner tube is positioned at the inside of described axis of rotation outer tube, between described axis of rotation inner tube and axis of rotation outer tube, leave third space, in described third space, be provided with a plurality of the 3rd concentric connected unit, described axis of rotation inner tube and axis of rotation outer tube are fixed by the described the 3rd concentric connected unit, described third space is water tap first passage, the end of described water tap first passage is shut, and the inner chamber of described axis of rotation inner tube is described water tap second channel, in described water jacket, establish clutch shaft bearing chamber and the second bearing chamber, the inner side of described clutch shaft bearing chamber and the second bearing chamber is respectively equipped with the first water tight compartment and the second water tight compartment, the front end of described axis of rotation outer tube and end are arranged on described clutch shaft bearing chamber and the second bearing chamber by described clutch shaft bearing and the second bearing respectively, the hydroecium forming between described axis of rotation and water jacket is by being arranged on described the first water tight compartment, water seal in the second water tight compartment seals, the front end of described axis of rotation outer tube and the place ahead that is positioned at described clutch shaft bearing are provided with annular boss, described annular boss is positioned at the outside of described water jacket, the end of described axis of rotation outer tube and the rear that is positioned at described the second bearing are connected with nut, the axial displacement of the common restricting rotation axle of described annular boss and nut, the front end of described axis of rotation is connected with the end of described drilling rod, the front end of described axis of rotation outer tube is provided with the screw thread all round matching with described the second internal thread, and the front end of described axis of rotation inner tube is provided with the Fourth Ring shape inner groovy matching with the outer groove of described the second annular, on the tube wall of described axis of rotation outer tube and water jacket, have the first through hole and the second through hole, described the second through hole is connected with described high-pressure water pipe by quick plug, one end of described soft suction hose connector adopts and is threaded with the end of described water jacket, and the other end is connected with described soft suction hose by gooseneck.
Wherein, described dredge pump adopts pneumatic diaphragm pump.
The present invention also provides a kind of baseboard of coal mine roadway boring method, comprising: regulate the height of hydraulic vertical prop to make it withstand back; Starting rig drives the rotation of binary channels drilling rod advance and hole, when advancing boring, open stop valve and the dredge pump of high-pressure water pipe, make high-pressure water pipe through water tap first passage, drilling rod first passage and drill bit first passage, in hole, inject flushing liquor successively, the flushing liquor that simultaneously carries boring mud 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 after spreading binary channels drilling rod rig, stop valve and dredge pump carry out binary channels drilling rod creeps into until holed.
(3) beneficial effect
A kind of baseboard of coal mine roadway drilling equipment and method that technique scheme provides, binary channels drill bit, binary channels drilling rod, rig, hydraulic vertical prop, dredge pump and the Double-way water tap with three connectors, drill bit first passage is connected with high-pressure water pipe with water tap first passage by drilling rod first passage successively, for inject flushing liquor in hole, drill bit second channel is connected with soft suction hose with water tap second channel by drilling rod second channel successively, for carrying the flushing liquor of boring mud in extraction aperture, such scheme has been realized working continuously in the drilling process of roadway floor anchor pole (rope) hole, guarantee fast drilling, this practicality easy and simple to handle, and deslagging speed is fast, in hole without ponding, pore-forming is effective, operating environment to human body and environment without injury, can realize roadway floor mud stone, the fast drilling of Sandy Silt, not only can realize baseboard anchor cable reinforces fast, and can be used as floor grouting hole and realize floor grouting and reinforce, further, binary channels drilling rod is provided with many, and adjacent binary channels drilling rod joins end to end, and can realize deep well drilling.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of baseboard of coal mine roadway drilling equipment of the present invention;
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 in Fig. 3;
Fig. 5 is the sectional view of B-B in 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 Double-way 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 Double-way water tap of the present invention.
Wherein, 1, binary channels drill bit; 1a, drill bit outer tube; 1b, drill bit inner tube; 1c, scraper; 1d, diamond compact; 1e, hard alloy blocks; 1f, the second concentric connected unit; 1g, drill bit first passage; 1h, drill bit second channel; 1i, the 3rd internal thread; 1j, the outer groove of the 3rd annular; 1k, the second seal groove; 2, binary channels drilling rod; 2a, drilling rod first passage; 2b, drilling rod second channel; 2c, drilling rod inner tube; 2d, drilling rod outer tube; 2e, the first outer pipe connector; 2f, the first external screw thread; 2g, the first interior pipe connector; 2h, the first annular inner groovy; 2i, the second outer pipe connector; 2j, the second internal thread; 2k, the second interior pipe connector; 2l, the outer groove of the second annular; 2n, the first seal groove; 2s, the concentric connected unit of drilling rod front end first; 2t, the concentric connected unit of drilling rod end first; 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, Double-way water tap; 8a, water jacket; 8b, axis of rotation; 8c, axis of rotation inner tube; 8d, axis of rotation outer tube; 8e, the 3rd concentric connected unit; 8f, gooseneck; 8g, fast plug; 8h, soft suction hose connector; 8i, clutch shaft bearing chamber; 8j, the second bearing chamber; 8k, annular boss; 8l, nut; 8n, is screw thread all round; 8m, Fourth Ring shape inner groovy; 8p, packing ring; 8t, the first water tight compartment; 8s, the second water tight compartment; A, water tap first passage; B, water tap second channel; C, the first through hole; D, the second through hole; E, weld seam; F, hydroecium; G, inclined hole; H, the 3rd water tight compartment.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
As Fig. 1, a kind of baseboard of coal mine roadway 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 there is the Double-way water tap 8 of three connectors, rig 3 is arranged on hydraulic vertical prop 4, binary channels drilling rod 2 is arranged on rig 3, and rig 3 drives 2 rotations of binary channels drilling rod advance and promote; 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 Double-way water tap 8, two other connector of this Double-way 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 Double-way 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, Double-way 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 by drilling rod first passage 2a successively, be used for injecting high pressure washing liquid, drill bit second channel 1h is connected with soft suction hose 7 with water tap second channel b by drilling rod second channel 2b successively, for carrying the flushing liquor of boring mud in extraction aperture.The present invention has realized and having worked continuously in the drilling process of roadway floor anchor pole (rope) hole, deep well drilling fast, practicality easy and simple to handle, and deslagging speed is fast, and pore-forming is effective, drilling diameter is little, and in hole,, without ponding, operating environment without injury, can be realized the fast drilling of roadway floor mud stone, Sandy Silt to human body and environment, not only can realize baseboard anchor cable and reinforce fast, and can be used as floor grouting hole and realize floor grouting and reinforce.
Preferably, in order to improve deslagging ability, dredge pump 5 can adopt pneumatic diaphragm pump, adopts another effect of pneumatic diaphragm pump to be: because the self-priming time of pneumatic diaphragm pump is short, deslagging particle is large, and can dally, and can avoid dredge pump 5 damaged when idle running.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 2 rotations of binary channels drilling rod to advance is: rig 3 comprises hydraulic motor 3a, slips 3c, clamper 3b and jack, binary channels drilling rod 2 can be arranged on rig 3 by clamper 3b and slips 3c, slips 3c blocks binary channels drilling rod, clamper 3b is positioned at the below of slips 3c, play 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 to be rotated, and drive rig 3 to realize propelling and the lifting of binary channels drilling rod 2 by jack, the positive and negative running of hydraulic motor 3a can realize the handling of binary channels drilling rod 2.
In order to meet the requirement of anchor pole (rope) deep well drilling, the binary channels drilling rod 2 of the 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 this binary channels drilling rod 2 from propelling and lifting process, blocking rig and affect normally carrying out of work, as shown in Figure 2.
As shown in Figure 3, the binary channels drilling rod 2 of the present embodiment comprises drilling rod inner tube 2c and drilling rod outer tube 2d, drilling rod inner tube 2c is positioned at the inside of drilling rod outer tube 2d, between drilling rod inner tube 2c and drilling rod outer tube 2d, leave the first gap, in this first gap, be provided with a plurality of first concentric connected unit, drilling rod inner tube 2c and drilling rod outer tube 2d fix by this first concentric connected unit; The first gap is drill bit first passage 1g, and the inner chamber of drilling rod inner tube 2c is drill bit second channel 1h.
Preferably, the front end of the drilling rod outer tube 2d of the 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 drilling rod inner tube 2c and end are respectively equipped with the first interior pipe connector 2g and the second interior pipe connector 2k; 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 matching with this first external screw thread 2f, the first interior pipe connector 2g is provided with the first annular inner groovy 2h, and the second interior pipe connector 2k is provided with the outer groove 2l of the second annular matching with this first annular inner groovy 2h; When between binary channels drilling rod, head and the tail connect, the second outer pipe connector 2i of a binary channels drilling rod is wherein connected with the first interior pipe connector 2g with the first outer pipe connector 2e of another root binary channels drilling rod with the second interior pipe connector 2k, after connection, between the second outer pipe connector 2i of these two binary channels drilling rods and the first outer pipe connector 2e, realize and being threaded, between the second interior pipe connector 2k and the first interior pipe connector 2g, realize and insert connection.Further, for convenient, install, 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; The first interior pipe connector 2g and the second interior pipe connector 2k and drill bit inner tube 2c are one of the forming.Preferably, making progress in week of front end at drilling rod outer tube 2d upwards arranges respectively three the first concentric connected units with the second outer pipe connector 2i with the week of the junction of drilling rod outer tube 2, the the first concentric connected unit that is positioned at the front end of drilling rod outer tube 2d is drilling rod front end the first connector 2s, the second outer pipe connector 2i is drilling rod end the first connected unit 2t with the first concentric connected unit of the junction of the end of drilling rod outer tube 2d, structural limitations due to the above-mentioned front end of binary channels drilling rod and the connector of end, make drilling rod front end the first connector 2s less than the size of drilling rod end the first connected unit 2t, as shown in Figure 4 and Figure 5.
Further: in order to strengthen the sealing between binary channels drilling rod and binary channels drilling rod, end certain distance at distance the second interior pipe connector 2k is provided with the first seal groove 2n, in this first seal groove 2n, establish the first sealing ring, in order to facilitate the replacing of the first sealing ring, the aperture of the end of the end of the second outer pipe connector 2i and the second interior pipe connector 2k flushes, and the position in the aperture of the end of the first sealing ring 2n distance the second interior pipe connector 2k is 2～6mm; Further, in order to facilitate the head and the tail between binary channels drilling rod that connection is installed, the front end of the first outer pipe connector 2e is outstanding compared with the front end of the first interior pipe connector 2g, and its outstanding distance can be 8～15mm.
As shown in Fig. 6, Fig. 7 and Fig. 8, the binary channels drill bit 1 of the present embodiment is not got core and double-channel drill bit for scraper type, it comprises drill bit outer tube 1a, drill bit inner tube 1b and scraper 1c, drill bit inner tube 1b is positioned at the inside of drill bit outer tube 1a, between drill bit inner tube 1b and drill bit outer tube 1a, leave the second gap, in this second gap, be provided with a plurality of second concentric connected unit 1f, drill bit outer tube 1a and drill bit inner tube 1b adopt the second concentric connected unit 1f to fix, 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 drill bit inner tube 1b is drill bit second channel 1h, and the front end of drill bit first passage 1g adopts electric welding to shut, and the e in Fig. 7 and Fig. 8 is 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 matching with the first external screw thread, and the end of drill bit inner tube 1b is provided with the outer groove 1j of the 3rd annular matching with the first annular inner groovy; 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, for inject flushing liquor in boring.When drill bit 1 is connected with drilling rod 2, the front end of drilling rod 2 is inserted to the end of drill bit 1, now, the first outer pipe connector 2e adopts and is threaded with the end of drill bit outer tube 1a, the first interior pipe connector 2g adopts to insert with the end of drill bit inner tube 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 is also made as three, lays respectively between these three scrapers.On the side of these three scraper 1c, according to the size of scraper 1c, can be embedded with respectively a plurality of diamond compact 1d, in the present embodiment, be embedded with two and half diamond compact 1d, half diamond compact 1d is wherein arranged on the tip of scraper 1c, can improve the sharpness of scraper 1c.Each scraper 1c is respectively a tip shape with inward crooked angle, and together, and the inner side of these three scrapers forms the return flow line of a back taper in the tip position welding of these three scrapers, and this return flow line communicates with drill bit second channel.Further, at the tip position of these three scraper 1c, be inlaid with hard alloy blocks 1e or diamond composite block, the present embodiment preferentially adopts hard alloy blocks 1e, reason is: owing to being positioned at, the desired intensity in tip position is not high, in order to reduce costs, at the tip position of these three scraper 1c, adopt hard alloy blocks can meet the instructions for use of boring work.
Discharge for the convenient flushing liquor with boring mud, the inner chamber of the front end of the drill bit inner tube 1b of the present embodiment is open design, flushing liquor enters in hole by inclined hole g, after wash boring cooling binary channels drill bit 1, the flushing liquor that carries boring mud enters the drill bit inner tube 1b of binary channels drill bit 1, under the effect of dredge pump 5, will carry outside the flushing liquor tap of boring mud rapidly.Further, in order to strengthen the sealing between binary channels drilling rod and binary channels drill bit, end-to-end distance at drill bit outer tube 1a is provided with the second seal groove 1k from its aperture one segment distance, this second seal groove 1k is provided with the second sealing ring, further, in order to be convenient for changing the second sealing ring, the aperture of the end of drill bit outer tube 1a and drill bit inner tube 1b flushes, and the second sealing ring is 2～6mm apart from the position in the aperture of the end of drill bit inner tube 1b.
As shown in Fig. 9, Figure 10 and Figure 11, the Double-way water tap 8 of the present embodiment also comprises water jacket 8a, axis of rotation 8b and soft suction hose connector 8h.Axis of rotation 8b comprises axis of rotation inner tube 8c and axis of rotation outer tube 8d, axis of rotation inner tube 8c is positioned at the inside of axis of rotation outer tube 8d, between axis of rotation inner tube 8c and axis of rotation outer tube 8d, leave third space, in this third space, be provided with a plurality of the 3rd concentric connected unit 8e, axis of rotation inner tube 8c and axis of rotation outer tube 8d fix by the 3rd concentric connected unit 8e, this third space is above-mentioned water tap first passage a, the end of this water tap first passage a adopts electric welding to shut, and the inner chamber of rotation inner tube 8c is water tap second channel b.Wherein, water tap first passage a communicates with drilling rod first passage 2a and drill bit first passage 1g, for inject flushing liquor in boring, water tap second channel b communicates with drilling rod second channel 2b and drill bit second channel 1h, for carrying the flushing liquor of boring mud in extraction aperture.
In water jacket 8a, establish clutch shaft bearing chamber 8i and the second bearing chamber 8j, the inner side of clutch shaft bearing chamber 8i and the 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 by clutch shaft bearing and the second bearing, are arranged on clutch shaft bearing chamber 8i respectively and the second bearing chamber 8j is upper, and the hydroecium f forming between axis of rotation 8b and water jacket 8a seals by the water seal being arranged 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, the end of axis of rotation outer tube 8d and the rear that is positioned at the second bearing are connected with nut 8l, the axial displacement of annular boss 8k and the common restricting rotation axle of nut 8l 8b; Further, in the junction of annular boss 8k and water jacket 8a, be provided with packing ring 8p.
The front end of axis of rotation 8b is a wherein connector of Double-way water tap 8, is connected with the end of binary channels drilling rod 2, and axis of rotation outer tube 8d can rotate with drilling rod 2 with axis of rotation inner tube 8c, 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 matching with the second internal thread 2j, and the front end of axis of rotation inner tube 8c is provided with the Fourth Ring shape inner groovy 8m matching with the outer groove 2l of the second annular.When this Double-way water tap 8 is connected with drilling rod 2, the front end of Double-way water tap 8 is inserted to the end of drilling rod 2, now, the front end of axis of rotation outer tube 8d adopts and is threaded with the second outer pipe connector 2i, and the front end of axis of rotation inner tube 8c adopts to insert with the second interior pipe connector 2k and is connected.
Soft suction hose connector 8h is second connector of Double-way water tap 8, its one end adopts and is threaded with the end of water jacket 8a, the other end is connected with soft suction hose 7 by gooseneck 8f, be specially: the end at water jacket 8a has internal thread, front end at soft suction hose connector 8h is provided with the external screw thread matching with this internal thread, and gooseneck 8f adopts the second quick connector 8t to be connected with soft suction hose 7 further.On the tube wall of axis of rotation outer tube 8d and water jacket 8a, have the first through hole and the second through hole c, d, the second through hole d is connected with high-pressure water pipe 6 by the first fast plug 8g, and this second through hole d is the 3rd connector of Double-way water tap 8.Further, by being positioned on axis of rotation outer tube 8d on the circumference at the first through hole c place, be made as recessed inward annular groove, thereby increased the space of hydroecium f.
At the end of axis of rotation 8b, axis of rotation inner tube 8c is outstanding compared with axis of rotation outer tube 8d; At the front end of axis of rotation 8b, the aperture of the front end of axis of rotation outer tube 8d is outstanding compared with axis of rotation inner tube 8c's, so that install and be connected with the end of drilling rod 2.
Further, the flushing liquor that contains boring mud for fear of the end of axis of rotation 8b flows in the hydroecium f between water jacket 8a and axis of rotation outer tube 8d and affects the normal work 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.
Baseboard of coal mine roadway boring method provided by the invention, comprise: regulate the height of hydraulic vertical prop 4 to make it withstand back, starting rig 3 drives 2 rotations of binary channels drilling rod advance and hole, when advancing boring, open stop valve and the dredge pump 5 of high-pressure water pipe 6, make high-pressure water pipe successively through water tap first passage a, drilling rod first passage 2a and drill bit first passage 1g inject flushing liquor in hole, the flushing liquor that simultaneously carries boring mud under the effect of dredge pump 5 successively through soft suction hose 7, drill bit second channel 1h, outside drilling rod second channel 2b and water tap second channel b tap, when boring arrives binary channels drilling rod 2 extreme position (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 after spreading binary channels drilling rod 2, stop valve and dredge pump 5 carry out binary channels drilling rod 2 creeps into until holed.
Concrete boring procedure is: the first step, stablize rig, make hydraulic vertical prop 4 firmly withstand back, make rig 3 stable, connect the blow-off pipe 5a between dredge pump 5 and soil pipe, connect the soft suction hose 7 between dredge pump 5 and Double-way water tap 8, connect the high-pressure water pipe 6 on Double-way 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 clamper 3b, then at the front end of binary channels drilling rod 2, binary channels drill bit 1 is installed, finally at the end of binary channels drilling rod 2, the Double-way water tap 8 of connecting soft suction hose 7 and high-pressure water pipe 6 is installed, 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 Double-way water tap 8, spreading binary channels drilling rod 2, at the end of binary channels drilling rod 2, reinstall Double-way water tap 8, open high-pressure water pipe 6 stop valve, start rig 3 rotation and advance, the spreading of realizing binary channels drilling rod 2 creeps into; The 5th step, boring reaches and stops rig rotation after projected depth and advance, close high-pressure water pipe stop valve, slightly stop closing dredge pump 5 for a moment, unload Double-way water tap 8, promote binary channels drilling rod 2 and to binary channels drill rod connector place, expose the dismounting that clamper 3b, clamper 3b step up binary channels drilling rod 2, reversion rig 3, realize successively binary channels drilling rod 2 and binary channels drill bit 1; The 6th step, mobile drill 3, carries out the construction of next boring.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvement and replacement, these improvement and replacement also should be considered as protection scope of the present invention.
Claims (7)
1. a baseboard of coal mine roadway drilling equipment, it is characterized in that, comprise binary channels drill bit, binary channels drilling rod, rig, hydraulic vertical prop, dredge pump and there is the Double-way water tap of three connectors, described rig is arranged on hydraulic vertical prop, described binary channels drilling rod is arranged on rig, and described rig drives the rotation of binary channels drilling rod advance and promote; The front end of described binary channels drilling rod is connected with binary channels drill bit, its end is connected with a connector of Double-way water tap, two other connector of described Double-way water tap is connected with soft suction hose with high-pressure water pipe respectively, described soft suction hose is connected with the water inlet of dredge pump, and the delivery port of described dredge pump is connected with blow-off pipe; Described Double-way water tap can rotate freely with the connector that described binary channels drilling rod is connected, and its two other connector can not rotate freely;
Described binary channels drilling rod comprises independently drilling rod first passage and drilling rod second channel, described Double-way water tap comprises independently water tap first passage and water tap second channel, described binary channels drill bit comprises independently drill bit first passage and drill bit second channel, described drill bit first passage is connected with high-pressure water pipe with water tap first passage by drilling rod first passage successively, described drill bit second channel is connected with described soft suction hose with water tap second channel by drilling rod second channel successively, described binary channels drilling rod comprises drilling rod inner tube and drilling rod outer tube, described drilling rod inner tube is positioned at the inside of described drilling rod outer tube, between described drilling rod inner tube and drilling rod outer tube, leave the first gap, in described the first gap, be provided with a plurality of first concentric connected unit, described drilling rod inner tube and drilling rod outer tube are fixed by the described first concentric connected unit, described the first gap is drilling rod first passage, the inner chamber of described drilling rod inner tube is drilling rod second channel, the front end of described 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 described drilling rod inner tube and end are respectively equipped with the first interior pipe connector and the second interior pipe connector, described the first outer pipe connector is provided with the first external screw thread, and described the second outer pipe connector is provided with the second internal thread matching with described the first external screw thread, described the first interior pipe connector is provided with the first annular inner groovy, and described the second interior pipe connector is provided with the outer groove of the second annular matching with described the first annular inner groovy,
Described Double-way water tap comprises water jacket, axis of rotation and soft suction hose connector;
Described axis of rotation comprises axis of rotation inner tube and axis of rotation outer tube, described axis of rotation inner tube is positioned at the inside of described axis of rotation outer tube, between described axis of rotation inner tube and axis of rotation outer tube, leave third space, in described third space, be provided with a plurality of the 3rd concentric connected unit, described axis of rotation inner tube and axis of rotation outer tube are fixed by the described the 3rd concentric connected unit, described third space is water tap first passage, the end of described water tap first passage is shut, and the inner chamber of described axis of rotation inner tube is described water tap second channel;
In described water jacket, establish clutch shaft bearing chamber and the second bearing chamber, the inner side of described clutch shaft bearing chamber and the second bearing chamber is respectively equipped with the first water tight compartment and the second water tight compartment, the front end of described axis of rotation outer tube and end are arranged on described clutch shaft bearing chamber and the second bearing chamber by clutch shaft bearing and the second bearing respectively, the hydroecium forming between described axis of rotation and water jacket is by being arranged on described the first water tight compartment, water seal in the second water tight compartment seals, the front end of described axis of rotation outer tube and the place ahead that is positioned at described clutch shaft bearing are provided with annular boss, described annular boss is positioned at the outside of described water jacket, the end of described axis of rotation outer tube and the rear that is positioned at described the second bearing are connected with nut, the axial displacement of the common restricting rotation axle of described annular boss and nut,
The front end of described axis of rotation is connected with the end of described drilling rod, the front end of described axis of rotation outer tube is provided with the screw thread all round matching with described the second internal thread, and the front end of described axis of rotation inner tube is provided with the Fourth Ring shape inner groovy matching with the outer groove of described the second annular;
On the tube wall of described axis of rotation outer tube and water jacket, have the first through hole and the second through hole, described the second through hole is connected with described high-pressure water pipe by quick plug;
One end of described soft suction hose connector adopts and is threaded with the end of described water jacket, and the other end is connected with described soft suction hose by gooseneck.
2. baseboard of coal mine roadway drilling equipment as claimed in claim 1, is characterized in that, described binary channels drilling rod is set to many, and adjacent binary channels drilling rod joins end to end, and the junction of described adjacent binary channels drilling rod is outer flat.
3. baseboard of coal mine roadway drilling equipment as claimed in claim 1, it is characterized in that, described binary channels drill bit is that scraper type is not got core and double-channel drill bit, it comprises drill bit outer tube, drill bit inner tube and scraper, described drill bit inner tube is positioned at the inside of drill bit outer tube, between described drill bit inner tube and drill bit outer tube, leave the second gap, be provided with a plurality of second concentric connected unit in described the second gap, described drill bit outer tube and drill bit inner tube are fixed by the described second concentric connected unit; Described the second gap is drill bit first passage, and the inner chamber of described drill bit inner tube is described drill bit second channel, and the front end of described drill bit first passage is shut;
The front end fixed installation scraper of described drill bit outer tube, the end of described drill bit outer tube is provided with the 3rd internal thread matching with described the first external screw thread, and the end of described drill bit inner tube is provided with the outer groove of the 3rd annular matching with described the first annular inner groovy;
The tube wall of the front end of described drill bit outer tube is provided with inclined hole, and described inclined hole communicates with described drill bit first passage.
4. baseboard of coal mine roadway drilling equipment as claimed in claim 3, is characterized in that, is provided with equally distributed three described scrapers on the front end circumference of described binary channels drill bit, and described inclined hole is made as three, lays respectively between three described scrapers; Each scraper is respectively has a tip shape for crooked angle inward, and together, the inner side of three described scrapers forms the return flow line of a back taper in the tip position welding of three described scrapers, and described return flow line communicates with described drill bit second channel.
5. baseboard of coal mine roadway drilling equipment as claimed in claim 4, is characterized in that, described in each, the side of scraper is embedded with respectively diamond compact, and the tip position of described three scrapers is inlaid with hard alloy blocks or diamond composite block.
6. baseboard of coal mine roadway drilling equipment as claimed in claim 1, is characterized in that, described dredge pump adopts pneumatic diaphragm pump.
7. a boring method for the baseboard of coal mine roadway drilling equipment based on described in claim 1-6 any one, is characterized in that, comprising: regulate the height of hydraulic vertical prop to make it withstand back; Starting rig drives the rotation of binary channels drilling rod advance and hole, when advancing boring, open stop valve and the dredge pump of high-pressure water pipe, make high-pressure water pipe through water tap first passage, drilling rod first passage and drill bit first passage, in hole, inject flushing liquor successively, the flushing liquor that simultaneously carries boring mud 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 after spreading binary channels drilling rod rig, stop valve and dredge pump carry out binary channels drilling rod creeps into until holed.
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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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| CN103382810B (en) * | 2013-07-26 | 2016-01-20 | 中国矿业大学 | Special drill bit for bottom anchor drilling machine |
| CN103382817B (en) * | 2013-07-26 | 2016-01-20 | 中国矿业大学 | Coal mine bottom plate anchoring anti-blocking drill rod |
| CN103410542B (en) * | 2013-08-08 | 2016-05-04 | 中国矿业大学 | Device and method for improving hole forming efficiency and anchoring performance of anchor rod and anchor cable of roadway floor |
| CN104196471A (en) * | 2014-08-25 | 2014-12-10 | 北京南车时代机车车辆机械有限公司 | Roof bolt drilling machine |
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| CN109736719A (en) * | 2019-03-01 | 2019-05-10 | 冀凯河北机电科技有限公司 | A kind of multi-purpose water-through jackrod of self-sealing |
| CN110761805A (en) * | 2019-07-31 | 2020-02-07 | 西南交通大学 | Quick advance support construction device for tunnel |
| CN113006708B (en) * | 2021-02-20 | 2022-10-11 | 山东大学 | Slurry unidirectional flowing drilling and grouting integrated drill rod and construction method |
| CN113530481B (en) * | 2021-07-09 | 2024-01-09 | 河南理工大学 | Protruding coal seam large-diameter circumference flow supply shield pressure relief sieve mesh drill rod |
| CN113982500B (en) * | 2021-12-01 | 2023-10-27 | 永城煤电控股集团有限公司 | Hydraulic jumbolter for coal mining |
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| CN2397250Y (en) * | 1999-06-23 | 2000-09-20 | 孙灵慧 | Portable hydraulic drilling machine with high efficient dust-removing series |
| CN202689924U (en) * | 2012-05-11 | 2013-01-23 | 天地科技股份有限公司 | Drilling device of bottom plate of coal mine tunnel |
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