CN202689924U - Drilling device of bottom plate of coal mine tunnel - Google Patents
Drilling device of bottom plate of coal mine tunnel Download PDFInfo
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- CN202689924U CN202689924U CN 201220212947 CN201220212947U CN202689924U CN 202689924 U CN202689924 U CN 202689924U CN 201220212947 CN201220212947 CN 201220212947 CN 201220212947 U CN201220212947 U CN 201220212947U CN 202689924 U CN202689924 U CN 202689924U
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Abstract
The utility model relates to the technical field of coal mining, and discloses a drilling device of a bottom plate of a coal mine tunnel. The device comprises a double channel drill, a double channel drill pipe, a drilling machine, a hydraulic column, a sewage pump and a double channel faucet provided with three joints. The drilling machine drives the double channel drill pipe to propel and lift rotatably. The joint of the double channel faucet connected with the double channel drill pipe can rotate freely, while the other two joints connected with a high pressure water pipe and a water sucking hose can not rotate freely. A first channel of the drill is connected with the high pressure water pipe through a first channel of the drill pipe and a first channel of the faucet sequentially. A second channel of the drill is connected with the water sucking hose through a second channel of the drill pipe and a second channel of the faucet sequentially. The drilling device of the bottom plate of the coal mine tunnel provided by the utility model in the drilling process of an anchor rod (cable) of the bottom plate of the tunnel realizes continuous work, drills a deep hole quickly with strong deslagging capacity. The drilling device is simple, convenient and practical to operate, and the work environment does not hurt human body and environment.
Description
Technical field
The utility model relates to the Coal Mining Technology field, particularly relates to a kind of baseboard of coal mine roadway drilling equipment.
Background technology
The underground coal resource exploitation is objective inexorable law by superficial part to the deep development, and along with the coal mining degree of depth constantly increases, the 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 is administered the most effective method of pucking, and the stability of roadway surrounding rock integral body is played an important role.At first, because the special geological conditions (existence of mud stone, Sandy Silt etc.) of roadway floor, 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 in time controlled floor rocks;
3. because the aperture is large, anchored force does not reach the requirement of design;
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 anchor cable hole, all can cause following impact:
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 the floor rocks strength decreased, 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 small amount of water, boring mud can't be discharged at all.
The utility model content
The technical problem that (one) will solve
The technical problems to be solved in the utility model 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 utility model 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 have the Double-way water tap of three connectors, described rig is installed on the hydraulic vertical prop, described binary channels drilling rod is installed on the rig, and described rig drives the rotation of binary channels drilling rod and advances and lifting; The front end of described binary channels drilling rod is connected with the 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 the water tap first passage by the drilling rod first passage successively, and described drill bit second channel is connected with described soft suction hose with the water tap second channel by the 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, leave the first gap between described drilling rod inner tube and the drilling rod outer tube, be provided with a plurality of first concentric connected unit in described the first gap, described drilling rod inner tube and drilling rod outer tube are fixed by the described first concentric connected unit; Described the first gap is the drilling rod first passage, and the inner chamber of described drilling rod inner tube is the 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; The described first outer pipe connector is provided with the first external screw thread, and the described second outer pipe connector is provided with the second internal thread that is complementary with described the first external screw thread; The described first interior pipe connector is provided with the first annular inner groovy, and the described second interior pipe connector is provided with the outer groove of the second annular that is complementary with the described first annular inner groovy.
Wherein, described binary channels drill bit is that scraper type is not got the 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, leave the second gap between described drill bit inner tube and the drill bit outer tube, 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 the 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 that is complementary 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 that is complementary with the described 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 at 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 the tip shape of crooked angle inward, the tip position welding of described three scrapers together, the inboard of described three scrapers forms the return flow line of a back taper, 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, leave third space between described axis of rotation inner tube and the axis of rotation outer tube, be provided with a plurality of the 3rd concentric connected unit in the described third space, 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 the 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; Establish clutch shaft bearing chamber and the second bearing chamber in the described water jacket, the inboard 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 installed on described clutch shaft bearing chamber and the second bearing chamber by described clutch shaft bearing and the second bearing respectively, the hydroecium that forms between described axis of rotation and the water jacket is by being installed in 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, described axis of rotation outer tube terminal 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 that is complementary 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 that is complementary with the outer groove of described the second annular; Have the first through hole and the second through hole on the tube wall of described axis of rotation outer tube and water jacket, 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 with the end of described water jacket and is threaded, and the other end is connected with described soft suction hose by gooseneck.
Wherein, described dredge pump adopts pneumatic diaphragm pump.
(3) beneficial effect
A kind of baseboard of coal mine roadway drilling equipment that technique scheme provides, the binary channels drill bit, the binary channels drilling rod, rig, hydraulic vertical prop, dredge pump and the Double-way water tap with three connectors, the drill bit first passage is connected with high-pressure water pipe with the water tap first passage by 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 by the drilling rod second channel successively, be 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 fast drilling, this practicality easy and simple to handle, and deslagging speed is fast, in the hole without ponding, pore-forming is effective, operating environment to human body and environment without injury, can realize the roadway floor mud stone, the fast drilling of Sandy Silt 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 baseboard of coal mine roadway drilling equipment of the utility model;
Fig. 2 is the connection layout of many binary channels drilling rods of the present utility model;
Fig. 3 is the sectional view of binary channels drilling rod of the present utility model;
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 utility model;
Fig. 7 is the sectional view of binary channels drill bit of the present utility model;
Fig. 8 is the upward view of binary channels drill bit of the present utility model;
Fig. 9 is the structural representation of Double-way water tap of the present utility model;
Figure 10 is the structural representation of axis of rotation of the present utility model;
Figure 11 is the sectional view of Double-way water tap of the present utility model.
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, drilling rod front end the first concentric connected unit; 2t, terminal the first concentric connected unit of drilling rod; 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 utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
Such as Fig. 1, a kind of baseboard of coal mine roadway drilling equipment of the present utility model, comprise binary channels drill bit 1, binary channels drilling rod 2, rig 3, hydraulic vertical prop 4, dredge pump 5 and have the Double-way water tap 8 of three connectors, rig 3 is installed on the hydraulic vertical prop 4, 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 Double-way water tap 8, two other connector of this Double-way water tap 8 is connected with soft suction hose with high-pressure water pipe 6 respectively and is connected, 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, is used for carrying in the extraction aperture flushing liquor of boring mud.The utility model advances to have realized in the process working continuously at roadway floor anchor pole (rope) hole drill, quick deep well drilling, practicality easy and simple to handle, and deslagging speed is fast, and pore-forming is effective, drilling diameter is little, and without ponding, operating environment without injury, can be realized the fast drilling of roadway floor mud stone, Sandy Silt to human body and environment in the hole, 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 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 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 by clamper 3b and slips 3c, slips 3c blocks the binary channels drilling rod, clamper 3b is positioned at the below of slips 3c, play the effect of guiding, so that 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 driving propelling and the lifting that rig 3 is realized binary channels drilling rods 2 by jack, 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 this binary channels drilling rod 2 advance and lifting process in block 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 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, leave the first gap between drilling rod inner tube 2c and the drilling rod outer tube 2d, be provided with a plurality of first concentric connected unit in this first gap, 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 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 that is complementary 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 that is complementary with this first annular inner groovy 2h; When head and the tail connect between the binary channels drilling rod, with the second outer pipe connector 2i of a binary channels drilling rod wherein be connected interior pipe connector 2k and another root binary channels drilling rod the first outer pipe connector 2e be connected interior pipe connector 2g and be connected, 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 second interior pipe connector 2k and the first interior pipe connector 2g.Further, install for convenient, 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, week of the front end of drilling rod outer tube 2d upwards and the second outer pipe connector 2i and the junction of drilling rod outer tube 2 week three the first concentric connected units are set respectively upwards, 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 terminal the first connected unit 2t of drilling rod with the first concentric connected unit 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, so that drilling rod front end the first connector 2s is less than the size of terminal the first connected unit 2t of drilling rod, as shown in Figure 4 and Figure 5.
Further: in order to strengthen the sealing between binary channels drilling rod and the binary channels drilling rod, terminal certain distance at distance the second interior pipe connector 2k is provided with the first seal groove 2n, establish the first sealing ring in this first seal groove 2n, replacing for convenient 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 make things convenient for the head and the tail between the binary channels drilling rod connection is installed, 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.
Such as 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 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, leave the second gap between drill bit inner tube 1b and the drill bit outer tube 1a, be provided with a plurality of second concentric connected unit 1f in this second gap, 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 among 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 that is complementary 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 that is complementary 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, is used for injecting flushing liquor in boring.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, 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 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 respectively a plurality of diamond compact 1d, 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 is respectively a tip shape with inward crooked angle, 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.
For the discharge of convenience with the flushing liquor of boring mud, the inner chamber of the front end of the drill bit inner tube 1b of present embodiment is open design, flushing liquor enters in the hole by inclined hole g, wash boring and cool off binary channels drill bit 1 after, the flushing liquor that carries boring mud enters the drill bit inner tube 1b of binary channels drill bit 1, will carry rapidly under the effect of dredge pump 5 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, 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.
Such as Fig. 9, Figure 10 and shown in Figure 11, the Double-way 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 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, leave third space between axis of rotation inner tube 8c and the axis of rotation outer tube 8d, be provided with a plurality of the 3rd concentric connected unit 8e in this third space, 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, be used for injecting flushing liquor in boring, 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 clutch shaft bearing chamber 8i and the second bearing chamber 8j in the water jacket 8a, the inboard 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 are installed on clutch shaft bearing chamber 8i and the second bearing chamber 8j by clutch shaft bearing and the second bearing respectively, and the hydroecium f that forms between axis of rotation 8b and the water jacket 8a seals by 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 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, 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 Double-way water tap 8, is connected with the end of binary channels drilling rod 2, and axis of rotation outer tube 8d and axis of rotation inner tube 8c can rotate with drilling rod 2, 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 axis of rotation inner tube 8c is provided with the Fourth Ring shape inner groovy 8m that is complementary 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 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 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, the one end adopts with the end of water jacket 8a and is threaded, 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 that is complementary with this internal thread, and gooseneck 8f adopts the second quick connector 8t to be connected with soft suction hose 7 further.Have the 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 by the first fast plug 8g, and this second through hole d is the 3rd connector of Double-way water tap 8.Further, be made as recessed inward annular groove with being positioned on the axis of rotation outer tube 8d on the circumference at the first through hole c place, thereby increased the space of hydroecium f.
At the end of axis of rotation 8b, axis of rotation inner tube 8c is outstanding than 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 than axis of rotation inner tube 8c's, 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 affects the normal operation of the second bearing chamber 8j, is provided with the 3rd water tight compartment h and is furnished with supporting water seal between the end of axis of rotation 8b and soft suction hose connector 8h.
Baseboard of coal mine roadway boring method of the present utility model, 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, the stop valve of opening high pressure water pipe 6 and dredge pump 5, so that high-pressure water pipe is successively through water tap first passage a, drilling rod first passage 2a and drill bit first passage 1g inject flushing liquor in the hole, the flushing liquor that carries simultaneously 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 the 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 behind the spreading binary channels drilling rod 2, stop valve and dredge pump 5 carry out binary channels drilling rod 2 creeps into until hole and finish.
Concrete boring procedure is: the first step, stablize rig, make hydraulic vertical prop 4 firmly withstand back, so 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 Double-way water tap 8, connect the high-pressure water pipe 6 on the 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 the clamper 3b, then at the front end of binary channels drilling rod 2 binary channels drill bit 1 is installed, at the end of binary channels drilling rod 2 Double-way 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 hydraulic motor 3a, the opening high pressure water pipe 6 of dredge pump 5, rig 3 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, the end of binary channels drilling rod 2 reinstall Double-way water tap 8, opening high pressure water pipe 6 stop valve, start rig 3 rotations 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, slightly stop closing dredge pump 5 for a moment, unload Double-way water tap 8, promote binary channels drilling rod 2 and expose clamper 3b, clamper 3b to binary channels drill 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; In the 6th step, mobile drill 3 carries out the construction of next boring.
The above only is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection domain of the present utility model.
Claims (9)
1. 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 have the Double-way water tap of three connectors, described rig is installed on the hydraulic vertical prop, described binary channels drilling rod is installed on the rig, and described rig drives the rotation of binary channels drilling rod and advances and lifting; The front end of described binary channels drilling rod is connected with the 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 the water tap first passage by the drilling rod first passage successively, and described drill bit second channel is connected with described soft suction hose with the water tap second channel by the drilling rod second channel successively.
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 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, leave the first gap between described drilling rod inner tube and the drilling rod outer tube, be provided with a plurality of first concentric connected unit in described the first gap, described drilling rod inner tube and drilling rod outer tube are fixed by the described first concentric connected unit; Described the first gap is the drilling rod first passage, and the inner chamber of described drilling rod inner tube is the drilling rod second channel.
4. baseboard of coal mine roadway drilling equipment as claimed in claim 3, it is characterized in that, 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; The described first outer pipe connector is provided with the first external screw thread, and the described second outer pipe connector is provided with the second internal thread that is complementary with described the first external screw thread; The described first interior pipe connector is provided with the first annular inner groovy, and the described second interior pipe connector is provided with the outer groove of the second annular that is complementary with the described first annular inner groovy.
5. baseboard of coal mine roadway drilling equipment as claimed in claim 4, it is characterized in that, described binary channels drill bit is that scraper type is not got the 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, leave the second gap between described drill bit inner tube and the drill bit outer tube, 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 the 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 that is complementary 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 that is complementary with the described 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.
6. baseboard of coal mine roadway drilling equipment as claimed in claim 5 is characterized in that, is provided with equally distributed three scrapers at the front end circumference of described binary channels drill bit, and described inclined hole is made as three, lays respectively between described three scrapers; Each scraper is respectively has the tip shape of crooked angle inward, the tip position welding of described three scrapers together, the inboard of described three scrapers forms the return flow line of a back taper, described return flow line communicates with described drill bit second channel.
7. baseboard of coal mine roadway drilling equipment as claimed in claim 6 is characterized in that, 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.
8. baseboard of coal mine roadway drilling equipment as claimed in claim 4 is characterized in that, 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, leave third space between described axis of rotation inner tube and the axis of rotation outer tube, be provided with a plurality of the 3rd concentric connected unit in the described third space, 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 the 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;
Establish clutch shaft bearing chamber and the second bearing chamber in the described water jacket, the inboard 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 installed on described clutch shaft bearing chamber and the second bearing chamber by described clutch shaft bearing and the second bearing respectively, the hydroecium that forms between described axis of rotation and the water jacket is by being installed in 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, described axis of rotation outer tube terminal 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 that is complementary 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 that is complementary with the outer groove of described the second annular;
Have the first through hole and the second through hole on the tube wall of described axis of rotation outer tube and water jacket, 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 with the end of described water jacket and is threaded, and the other end is connected with described soft suction hose by gooseneck.
9. baseboard of coal mine roadway drilling equipment as claimed in claim 1 is characterized in that, described dredge pump adopts pneumatic diaphragm pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220212947 CN202689924U (en) | 2012-05-11 | 2012-05-11 | Drilling device of bottom plate of coal mine tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220212947 CN202689924U (en) | 2012-05-11 | 2012-05-11 | Drilling device of bottom plate of coal mine tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202689924U true CN202689924U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220212947 Withdrawn - After Issue CN202689924U (en) | 2012-05-11 | 2012-05-11 | Drilling device of bottom plate of coal mine tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202689924U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678040A (en) * | 2012-05-11 | 2012-09-19 | 天地科技股份有限公司 | Drilling device and method for baseplate in coal mine roadway |
| CN103382823A (en) * | 2013-07-26 | 2013-11-06 | 中国矿业大学 | Drill row separated type bottom plate anchoring drilling machine |
| CN103397859A (en) * | 2013-07-26 | 2013-11-20 | 中国矿业大学 | Drilling and discharging integrated bottom plate anchoring drilling machine |
| CN103726801A (en) * | 2013-12-26 | 2014-04-16 | 北京市三一重机有限公司 | Deslagging device and rotary drilling rig |
| CN104295235A (en) * | 2014-09-30 | 2015-01-21 | 湖南科技大学 | Rapid grouting drilling device for roadway base plate |
| CN107191142A (en) * | 2017-06-19 | 2017-09-22 | 中铁上海工程局集团有限公司 | The drilling tool and its application method of a kind of four wings alloy bit |
-
2012
- 2012-05-11 CN CN 201220212947 patent/CN202689924U/en not_active Withdrawn - After Issue
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678040A (en) * | 2012-05-11 | 2012-09-19 | 天地科技股份有限公司 | Drilling device and method for baseplate in coal mine roadway |
| CN102678040B (en) * | 2012-05-11 | 2014-09-10 | 天地科技股份有限公司 | Drilling device and method for baseplate in coal mine roadway |
| CN103382823A (en) * | 2013-07-26 | 2013-11-06 | 中国矿业大学 | Drill row separated type bottom plate anchoring drilling machine |
| CN103397859A (en) * | 2013-07-26 | 2013-11-20 | 中国矿业大学 | Drilling and discharging integrated bottom plate anchoring drilling machine |
| CN103382823B (en) * | 2013-07-26 | 2015-10-21 | 中国矿业大学 | Drill row separated type bottom plate anchoring drilling machine |
| CN103397859B (en) * | 2013-07-26 | 2015-10-28 | 中国矿业大学 | Drilling and discharging integrated bottom plate anchoring drilling machine |
| CN103726801A (en) * | 2013-12-26 | 2014-04-16 | 北京市三一重机有限公司 | Deslagging device and rotary drilling rig |
| CN103726801B (en) * | 2013-12-26 | 2016-05-25 | 北京市三一重机有限公司 | Slag-draining device and rotary drilling rig |
| CN104295235A (en) * | 2014-09-30 | 2015-01-21 | 湖南科技大学 | Rapid grouting drilling device for roadway base plate |
| CN104295235B (en) * | 2014-09-30 | 2016-09-07 | 湖南科技大学 | A kind of quick inlet well equipment for roadway floor |
| CN107191142A (en) * | 2017-06-19 | 2017-09-22 | 中铁上海工程局集团有限公司 | The drilling tool and its application method of a kind of four wings alloy bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130123 Effective date of abandoning: 20140910 |
|
| RGAV | Abandon patent right to avoid regrant |