CN102926663A - Concentric sliding block simultaneous casing drilling tool, center drilling bit and centralizer - Google Patents
Concentric sliding block simultaneous casing drilling tool, center drilling bit and centralizer Download PDFInfo
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- CN102926663A CN102926663A CN2012104109451A CN201210410945A CN102926663A CN 102926663 A CN102926663 A CN 102926663A CN 2012104109451 A CN2012104109451 A CN 2012104109451A CN 201210410945 A CN201210410945 A CN 201210410945A CN 102926663 A CN102926663 A CN 102926663A
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Abstract
The invention discloses a concentric sliding block simultaneous casing drilling tool, a center drilling bit and centralizer. The concentric sliding block simultaneous casing drilling tool is formed by the centralizer, a ladder-shaped tapping center drilling bit and semicircle-shaped expanding drilling pieces, wherein the ladder-shaped tapping center drilling bit is connected and matched with a hole to which the centralizer is aligned for torque transmission, the ladder-shaped tapping center drilling bit is connected and located through a locating groove, a locating hole, a solid cylindrical pin and a hollow expansion pin, three semicircle-shaped expanding drilling pieces are in torque transmission through a T-shaped oblique groove and an R arc-shaped oblique groove, mutual included angles of the T-shaped oblique groove and the R arc-shaped oblique groove are 120 degrees by using an axis of the ladder-shaped tapping center drilling bit as the center, the semicircle-shaped expanding drilling pieces slide backwards to the end surface of the centralizer along the T-shaped oblique groove and the R arc-shaped oblique groove when being subjected to rock resistance and can be located, an expanding simultaneous casing can be formed, and the semicircle-shaped expanding drilling pieces slide downwards, can be narrowed and withdrawn due to the resistance of a pipe boot during upward drawing. According to the concentric sliding block simultaneous casing drilling tool disclosed by the invention, the front area of the tapping drilling bit is small, the force is concentrated, and the tapping drilling bit can crush harder or large rocks firstly at stages at crushing speed.
Description
Technical field
The present invention relates to mine blasting, water power infrastructure, slope of highway underpin, railway prospecting, geological disaster such as prevents at dark, the construction of shallow bore hole Area cracked of correlation engineering; Be applicable to various rock-core borers, jumbolter, be used for geological mapping and get the fields such as core, deep foundation pit support, high bank slope anchoring, Tunnel Landslide pipe shed support, boulder bed high-pressure rotary-spray, relate to that a kind of down-hole hammer of required usefulness uses with one heart with the concentric slide block casing drilling tool of pipe.
Background technology
The down-the-hole casing drilling tool of selling in the market, major part all is the casing drilling tool of eccentric center principle, according to facts have proved for many years, all there are obvious defective in existing eccentric drilling tool or other concentric drilling tool, for example in use, torsional forces is large, boring circle, easily bit freezing, large with the pipe resistance, the eccentric swing amount is large, drilling tool discontinuity, intensity difference, must reverse when pulling out back, and the technological deficiency of the accidents such as breaking of rod bar and sleeve pipe occurs easily.
Summary of the invention
Goal of the invention of the present invention is: for the problem of above-mentioned existence, provide a kind of simple in structure, easy and simple to handle, easy-to-use concentric slide block casing drilling tool and center bit, guider adopt concentric slide block casing drilling tool and center bit, guider, can obviously strengthen crushing effect, and transmission is ingenious, and torsional forces is little, reliable in structure, resistance is little, and broken stone is even; Torsional forces is very little in drilling process simultaneously, and without swinging, drilling rod is concentric, becomes hole circle.
The technical solution used in the present invention is as follows:
Center bit of the present invention, comprise drill body and reamer sheet, described drill body is along on its central axis being the front portion, middle part and afterbody, the drill body front portion is arrow-shaped, taper or round boss structure, the diameter at drill body middle part is greater than the diameter of front portion, offer at least two skewed slots on the outer peripheral face at drill body front portion to middle part, the initiating terminal of this skewed slot is that drill body is anterior, and in the middle part of drill body, be groove, the reamer sheet is positioned at this skewed slot and its coupling, the reamer sheet can be slided in skewed slot, all be inlaid with carbide alloy on the external surface of drill body front portion and reamer sheet, the afterbody of drill body is non-circular cylinder.
Owing to having adopted said structure, center bit comprises drill body, wherein drill body is column construction, and symmetrical with central axis, direction at central axis is divided into the front portion, middle part and afterbody, and anterior, form integrative-structure between middle part and the afterbody, wherein the drill body front portion is arrow-shaped, taper or round boss structure, thereby be convenient to drill body in use, center bit front end area is little, stressed concentrating, meet more firmly or the classification of can going ahead of the rest of larger rock smashes, the diameter at drill body middle part is greater than the diameter of front portion, so that the drill body middle part is larger than anterior, so that the middle part can support front, guarantee that it is stressed, outer peripheral face at drill body front portion to middle part offers at least two skewed slots, this skewed slot can be two, three or four or more skewed slots, the initiating terminal of this skewed slot is that drill body is anterior, and in the middle part of drill body, be groove, so that this skewed slot is the groove of the tail end at middle part from the initiating terminal of drill body front portion to drill body, because the drill body front portion is arrow-shaped, taper or round boss structure, therefore this groove is the skewed slot of incline structure, the reamer sheet is set in this skewed slot, this reamer sheet can mate with skewed slot, and can slide with respect to skewed slot, so that the reamer sheet can slide to the drill body front portion from the drill body middle part.When this drilling tool moves down, the reamer sheet is subjected to the rock resistance skewed slot end that rearward slides, thereby can form borehole-enlarging drilling tool and carry out reaming, when needs are upwards packed up drilling tool, upwards reel center bit, the reamer sheet is subjected to the shoe resistance to slide down to the skewed slot initiating terminal, thereby so that drill bit dwindles withdrawal, need not counter-rotating can directly regain, it is easy to operate quick, simultaneously on the external surface of drill body front portion and reamer sheet, all be inlaid with carbide alloy, thereby hole and reaming, the crushing effect that has guaranteed center bit is good, is convenient to boring, and the afterbody of drill body is non-circular cylinder, adopt non-circular cylinder can make this drill bit can and guider between cooperatively interact, so that drill body registration when being installed in the guider, and the moment of torsion on the drill bit can be passed on the guider, be convenient to transfer of torque.Center bit of the present invention, simple in structure, easy and simple to handle, easy-to-use, can obviously strengthen crushing effect, and transmission is ingenious, torsional forces is little, reliable in structure, resistance is little, and broken stone is even.
Center bit of the present invention, the outer peripheral face at drill body front portion to middle part offer three skewed slots, and three skewed slots are distributed in respect to 120 ° at central axis interval on the outer peripheral face of drill body, and coupling has the reamer sheet in arbitrary skewed slot.
Owing to having adopted said structure, skewed slot is three, and be distributed on the outer peripheral face of drill body, and three skewed slots are with respect to 120 ° at central axis interval, wherein coupling has the reamer sheet in arbitrary skewed slot, so that three reamer sheets mutual angle centered by the axis of center bit is 120 degree, cooperate with the skewed slot of center bit and by skewed slot location transmitting torque, and on each reamer sheet stressed evenly, in use, three reamer sheets slide to the tail end of skewed slot, are convenient to form the one-level boss thereby can form a similar full circle, thereby can carry out reaming at the end of drill bit, meet more firmly or during larger rock, the leading portion of drill bit carries out first classification and smashes, the last hole wall that will expand is thinner, the afterbody boss that the reamer sheet forms, it is hit less, and torsional forces is very little in drilling process, without swinging, drilling rod is concentric, becomes hole circle.
Center bit of the present invention arranges rectangular channel, dovetail groove or dovetail groove on the two side of described skewed slot, making skewed slot is the gathering sill of T shape structure.
Owing to having adopted said structure, the groove of the various ways structures such as rectangular channel, dovetail groove or dovetail groove is set in the two side of skewed slot, so that the tangent plane of skewed slot forms the gathering sill of T shape structure, the reamer sheet can slide in this gathering sill, slide to tail end from the initiating terminal of skewed slot, its slippage is convenient and swift, operates very easy.
Center bit of the present invention, the afterbody of described drill body is triangle cylinder, semicircle cylinder, elliptic cylindrical, quadrangle cylinder, pentagon cylinder, hexagon cylinder, polygon or special-shaped cylinder, is provided with the pin breach at the afterbody of drill body.
Owing to having adopted said structure, the afterbody of drill body can adopt triangle cylinder, semicircle cylinder, elliptic cylindrical, the quadrangle cylinder, the pentagon cylinder, the hexagon cylinder, the various structures such as polygon or special-shaped cylinder form, thereby be convenient to the registration between drill body and the guider, and the moment of torsion on the drill body and impact can be passed to guider, afterbody at drill body is provided with the pin breach simultaneously, be convenient to drill body and be connected location with the filled circles pin with hollow expansion pin with locating hole by himself pin breach, simple in structure, fiting effect is good.But avoid adopting circular cylinder because the afterbody of the drill body of circular cylinder in being inserted into guider after, not only be inconvenient to locate but also be not easy to transmitting torque.
Center bit of the present invention, described drill body front portion is the round boss structure, make the drill body front portion present the multistage boss of notch cuttype, between the boss at different levels with inclined-plane tapering transition reducing, the straight trough that is communicated with skewed slot also is set in the drill body front portion, the initiating terminal of straight trough is positioned at drill body, on the sidewall of the foremost boss of drill body front portion, is provided with the anterior ash pit of the drill bit that links to each other with the straight trough initiating terminal; The reamer sheet can slide in the straight trough in skewed slot, and the width of drill body afterbody is less than the middle part diameter.
Owing to having adopted said structure, this drill body front portion is the round boss structure, make the drill body front portion present the multistage boss of notch cuttype, when meeting more firmly or the classification of can going ahead of the rest of larger rock smashes, minimizing is to drill body and reamer sheet impact, thereby guarantee its life-span, and between the boss at different levels with inclined-plane tapering transition reducing, from so that the drill body front portion is protruding top, and it is large that diameter progressively becomes, tapering transition in inclined-plane between the boss at different levels, the drill body front portion also arranges the straight trough that is communicated with skewed slot, and the initiating terminal of straight trough is positioned at the drill body front portion, therefore straight trough is connected with skewed slot, make it from the initiating terminal of straight trough until the tail end at drill body middle part, the reamer sheet can slide in the straight trough in skewed slot, thereby is convenient to the folding and unfolding with the reamer sheet, when drilling tool moves down, the reamer sheet is rearward slided by the rock resistance and forms reaming with pipe, and the reamer sheet was subjected to shoe resistance down sliding to dwindle withdrawal when drilling tool upwards reeled, and need not counter-rotating can directly regain.Sidewall at the foremost boss of drill body front portion is provided with the anterior ash pit of drill bit, and the anterior ash pit of this drill bit links to each other with the straight trough initiating terminal, is beneficial to deslagging; The width of drill body afterbody is less than the middle part diameter, thereby is convenient to control cooperating between drill body and the guider, guarantees the safe and reliable of way-type drilling unit.
Center bit of the present invention, the inside of described drill body is provided with center roof vent, outer peripheral face at the drill body middle part is provided with drill bit middle part ash pit, be provided with the drill bit middle part air vent that is communicated with center roof vent in the ash pit of described drill bit middle part, be provided with the drill bit straight trough air vent that is communicated with center roof vent in the described straight trough.
Owing to having adopted said structure, drill bit middle part ash pit is convenient to the deslagging of drill bit, and being drilled with steam vent with guider master dreg discharging tunnel equidirectional in the ash pit of center bit middle part, discharge directions is consistent with the direction of slagging tap, and is not subjected to drilling tool pressure to meet soft mud dirt and can be convenient to deslagging by plug-hole.
Center bit of the present invention, described reamer sheet comprises that top combines with the bottom and forms the brill sheet body of T shape structure, the top semicircular in shape structure of described brill sheet body, bore the brill sheet arc hypotenuse of arc-shaped edges for tilting of sheet body, this place, angle, two ends of boring the sheet body is for boring sheet side convex body, bore sheet body bottom and be positioned at the non-arc-shaped edges middle part of boring the sheet body, bore sheet side convex body and be the brill sheet side intrados of arcuate structure between the sheet body bottom to boring, be provided with the projection body on the two side of described brill sheet body bottom, bore the sheet body and match with gathering sill with the combination of projection body, the reamer sheet can be slided in gathering sill.
Owing to having adopted said structure, the reamer sheet can divide top and the bottom that is integrated, the brill sheet body of its two formation T shape structure that combines, bore the top semicircular in shape structure of sheet body, so that the amalgamation of a plurality of reamer sheet together, can form similar circle, thereby can form last one deck boss, thereby by hierarchical layered rock is smashed, last one deck is the reamer sheet, and the impact that it is subject to is minimum, and reaming is effective, thereby increase its application life, bore the brill sheet arc hypotenuse of arc-shaped edges for tilting of sheet body, so that after three reamer sheets spread apart, external surface can form similar round structure in the middle part of its arc-shaped edges and the drill body, thereby form the reaming boss of last one deck, be convenient to carry out reaming.This place, angle, two ends of boring the sheet body is for boring sheet side convex body, bore sheet body bottom and be positioned at the non-arc-shaped edges middle part of boring the sheet body, bore sheet side convex body and be the brill sheet side intrados of arcuate structure between the sheet body bottom to boring, be provided with the projection body on the two side of described brill sheet body bottom, bore the sheet body and match with gathering sill with the combination of projection body, the reamer sheet can be slided in gathering sill.The projection body is convenient on the one hand bore the sheet body and is slided in gathering sill, in addition can transmitting torque, thereby guarantee that the moment of torsion that bears on the reamer sheet is less, being convenient to simultaneously the reamer sheet moves with respect to drill body, cooperatively interact between three reamer sheets, when drilling tool moved down, the reamer sheet was subjected to the rock resistance formation borehole-enlarging drilling tool that rearward slides, the reamer sheet was subjected to shoe resistance down sliding to dwindle withdrawal when drilling tool upwards reeled, and need not counter-rotating can directly regain.
Center bit of the present invention on the outer peripheral face at the drill body middle part of skewed slot both sides, is provided with curve slope and arcuate furrow; Described curve slope can be bonded to each other with brill sheet side intrados, and described arcuate furrow can be fitted with brill sheet side convex body.
Owing to having adopted said structure, described curve slope can be bonded to each other with brill sheet side intrados, described arcuate furrow can be fitted with boring sheet side convex body, so that the outer peripheral face applying at reamer sheet and drill body middle part, so that the semicircle reamer sheet when center bit cylindrical and reaming is arc transition, without obvious broken line, significantly reduce rotary resistance, torsional forces is very little in drilling process, without swinging, drilling rod is concentric, becomes hole circle.
The guider that mates with center bit of the present invention, comprise the guider body, be provided with the guider ash pit on the outer peripheral face of described guider body, the two ends of guider body are provided with the guider center roof vent along the center, one end of guider body is provided with the non-circular drill bit tail end installing hole that the afterbody with drill body is complementary, be provided with pin-and-hole and the guider air vent that is communicated with the guider center roof vent on the periphery of described guider body, described pin-and-hole is the through hole that runs through guider body sidewall, when center drill bit and guider assembling, this through hole can align with the pin breach.
Owing to having adopted said structure, this guider and center bit mate mutually, wherein the outer peripheral face at the guider body is provided with the guider ash pit of being convenient to deslagging, and the two ends at the guider body are provided with the guider center roof vent along the center, be convenient to be communicated with central through hole on the center bit, and by the enterprising gas that works of guider, be provided with the non-circular drill bit tail end installing hole that the afterbody with drill body is complementary at an end of guider, this drill bit tail end installing hole can be for tri-angle-holed, semi-circular hole, slotted eye, quadrilateral hole, the pentagon hole, hexagonal hole, the multiple hole such as polygonal hole or irregularly-shaped hole, but must be and the afterbody of the drill body identical non-circular hole that is complementary, this drill bit tail end installing hole is mainly used in cooperatively interacting with the afterbody of drill body, thereby drill body is positioned, and can transmitting torque, pin-and-hole is the through hole that runs through guider body sidewall, when center drill bit and guider assembling, this through hole can align with the pin breach, thereby can insert pin positions fixing, guarantee the stable connection between drill bit and the guider, guarantee the safe and reliable of use.
The concentric slide block casing drilling tool that employing center bit of the present invention and guider are combined to form, described reamer sheet is positioned at the skewed slot of drill body, the afterbody cooperation of described drill body is installed in the drill bit tail end installing hole, the guider center roof vent is communicated with center roof vent, drill bit middle part ash pit is communicated with the guider ash pit, described pin breach aligns with pin-and-hole, and by in the solid pin insertion pin-and-hole guider and center bit being fixed, the expansion pin that described solid pin is inserted in the pin-and-hole is spacing.
Owing to having adopted said structure, the reamer sheet is that easy on and off slides, when spitting, impact cutting then need not the gap of rebounding, the halfpace position of guider is shorter than conventional drilling tool to the distance of reamer sheet, reaming break-up point and shoe near distance, dreg discharging tunnel is short, and slag stone falls after rise few, deslagging speed is fast, and the shoe resistance is little, drilling depth is fast; In whole drilling process, can reduce tube drawing power, easily reclaim, and be difficult for occuring disconnected shoe, with accidents such as pipe, drill bit, drilling rods.The end face that guider cooperates with center bit, the reducing end face is affixed the rear retainer that merges the semicircle reamer sheet of formation below the middle part of this end face and center bit under confined state, as the impact power transmission point of reamer sheet, the initiating terminal of center bit straight trough is the addressee stop position of semicircle reamer sheet.Employing center bit of the present invention and the concentric slide block casing drilling tool that guider is combined to form can obviously strengthen crushing effect, and transmission are ingenious, and torsional forces is little, reliable in structure, and resistance is little, and broken stone is even; Torsional forces is very little in drilling process simultaneously, and without swinging, drilling rod is concentric, becomes hole circle.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows:
1, center bit of the present invention, center bit front end area is little, and stressed concentrate met more firmly or the classification of can going ahead of the rest of larger rock smashes;
2, center bit of the present invention, three semicircle reamer sheets mutual angle centered by the axis of center bit is 120 degree, cooperate with the T-shaped skewed slot of center bit and by T-shaped skewed slot location transmitting torque, semicircle reamer sheet when center bit cylindrical and reaming is arc transition, without obvious broken line, significantly reduces rotary resistance, torsional forces is very little in drilling process, without swinging, drilling rod is concentric, becomes hole circle;
3, guider of the present invention, the non-cylinder slotted eye of guider are connected with the non-cylinder of arrow-shaped center bit and cooperate transmitting torque; Center bit, guider are connected location with the filled circles pin with hollow expansion pin with locating hole by the locating slot of self, and simple in structure, fiting effect is good;
4, concentric slide block casing drilling tool of the present invention, when drilling tool moved down, the reamer sheet was rearward slided by the rock resistance and forms reaming with pipe, and the reamer sheet was subjected to shoe resistance down sliding to dwindle withdrawal when drilling tool upwards reeled, and need not counter-rotating can directly regain;
5, concentric slide block casing drilling tool of the present invention is drilled with the steam vent with guider master dreg discharging tunnel equidirectional in the ash pit of center bit middle part, discharge directions is consistent with the direction of slagging tap, and is not subjected to drilling tool pressure to meet soft mud dirt and can be convenient to deslagging by plug-hole;
6, concentric slide block casing drilling tool of the present invention, the reamer sheet is that easy on and off slides, when spitting, impact cutting then need not the gap of rebounding, the halfpace position of guider is shorter than conventional drilling tool to the distance of reamer sheet, reaming break-up point and shoe near distance, dreg discharging tunnel is short, and slag stone falls after rise few, deslagging speed is fast, and the shoe resistance is little, drilling depth is fast;
7, concentric slide block casing drilling tool of the present invention in whole drilling process, can reduce tube drawing power, easily reclaim, and be difficult for occuring disconnected shoe, with accidents such as pipe, drill bit, drilling rods.
Description of drawings
Fig. 1 is that concentric slide block casing drilling tool of the present invention is put the part view;
Fig. 2 is the structural representation of guider among the present invention;
Fig. 3 is the structural representation of reamer sheet among the present invention;
Fig. 4 is the structural representation of center bit among the present invention;
Fig. 5 is concentric slide block casing drilling tool addressee view of the present invention;
Fig. 6 is the assembling schematic diagram of concentric slide block casing drilling tool of the present invention.
Mark among the figure: 1-guider, the 2-center bit, 3-reamer sheet, the 4-solid pin, 5-expansion pin, the 6-carbide alloy, 101-guider body, the 102-pin-and-hole, 103-guider air vent, 104-guider ash pit, 105-guider endoporus, 106-drill bit tail end installing hole, the 201-drill body, 202-drill bit step surface, 203-drill bit middle part ash pit, 204-drill bit middle part air vent, 205-drill bit afterbody, 206-pin breach, the 207-center roof vent, the 208-skewed slot, 209-T shape groove, the 210-straight trough, 211-drill bit straight trough air vent, the anterior ash pit of 212-drill bit, the 213-curve slope, the 214-arcuate furrow, 215-straight trough stopper, 301-bores the sheet body, 302-bores sheet arc hypotenuse, 303-bores sheet side intrados, 304-projection body, 305-bores the sheet side, 306-bores the sheet front bevel, 307-bores sheet side convex body.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Center bit of the present invention, comprise drill body 201 and reamer sheet 3, described drill body 201 is along on its central axis being the front portion, middle part and afterbody, and anterior, middle part and afterbody are structure as a whole, drill body 201 front portions are the arrow-shaped structure, the diameter at drill body 201 middle parts is greater than the diameter of front portion, drill body 201 front portions offer at least two skewed slots 208 to the outer peripheral face at middle part, on the two side of described skewed slot 208 rectangular channel is set, make skewed slot 208 be the gathering sill of T shape structure, this skewed slot 208 can be 2,3,4,5 or a plurality of, the present embodiment is preferably used 2 skewed slots 208, and 2 skewed slots 208 are distributed on the outer peripheral face of drill body 201 with respect to 180 ° at central axis interval, arbitrary skewed slot 208 interior couplings have reamer sheet 3, the initiating terminal of this skewed slot 208 is drill body 201 front portions, also be on the outer peripheral face of arrow-shaped structure, and be groove at drill body 201 middle parts, reamer sheet 3 is positioned at this skewed slot 208 and its coupling, make the reamer sheet 3 can be in skewed slot 208 interior slips, described reamer sheet 3 comprises that top combines with the bottom and forms the brill sheet body 301 of T shape structure, its middle and upper part and bottom are structure as a whole, bore sheet body 301 bottoms and be positioned at the non-arc-shaped edges middle part of boring sheet body 301, the top semicircular in shape structure of described brill sheet body 301, two are bored sheet body 301 and are close in together, can form a similar circular configuration, bore the brill sheet arc hypotenuse 302 of arc-shaped edges for tilting of sheet body 301, thereby reduce resistance, this place, angle, two ends of boring sheet body 301 is for boring sheet side convex body 307, boring sheet side convex body 307 is the brill sheet side intrados 303 of arcuate structure to boring between sheet body 301 bottoms, on the outer peripheral face at drill body 201 middle parts of skewed slot 208 both sides, be provided with curve slope 213 and arcuate furrow 214; Described curve slope 213 can be bonded to each other with brill sheet side intrados 303, described arcuate furrow 214 can be fitted with brill sheet side convex body 307, be provided with projection body 304 on the two side of described brill sheet body 301 bottoms, this projection body 304 is rectangular configuration, and bore sheet body 301 and match with gathering sill with the combination of projection body 304, reamer sheet 3 can be slided in gathering sill.On the external surface of drill body 201 front portions and reamer sheet 3, all be inlaid with carbide alloy 6, the afterbody of drill body 201 is triangle cylinder, semicircle cylinder, elliptic cylindrical, the quadrangle cylinder, the pentagon cylinder, the hexagon cylinder, the cylinder of the various structures such as polygon or special-shaped cylinder, but do not select circular cylinder, the present embodiment the cross sectional shape of middle Choice of Bits body 201 afterbodys cut round edge for circular by two parallel lines, its two limits are straight line, article two, the limit is circular arc, thereby be convenient to the afterbody of drill body 201 and guider be positioned and be convenient to transmitting torque, wherein the afterbody at this drill body 201 is provided with pin breach 206.The inside of described drill body 201 is provided with center roof vent 207, outer peripheral face at drill body 201 middle parts is provided with drill bit middle part ash pit 203, is provided with the drill bit middle part air vent 204 that is communicated with center roof vent 207 in the ash pit 203 of described drill bit middle part.
The guider that mates with center bit of the present invention, comprise guider body 201, be provided with guider ash pit 104 on the outer peripheral face of described guider body 201, the two ends of guider body 201 are provided with the guider center roof vent along the center, one end of guider body 201 is provided with the non-circular drill bit tail end installing hole 106 that the afterbody with drill body 201 is complementary, this drill bit tail end installing hole can be for tri-angle-holed, semi-circular hole, slotted eye, quadrilateral hole, the pentagon hole, hexagonal hole, the multiple hole such as polygonal hole or irregularly-shaped hole, this drill bit tail end installing hole is mainly used in cooperatively interacting with the afterbody of drill body, thereby drill body is positioned, and can transmitting torque, therefore the drill bit tail end installing hole 106 in the present embodiment is selected the hole identical shaped with the drill body afterbody, be that cross sectional shape is that circle is cut round edge by two parallel lines, its two limits are straight line, article two, the limit is the hole of circular arc, be provided with pin-and-hole 102 and the guider air vent 103 that is communicated with the guider center roof vent on the periphery of described guider body 201, described pin-and-hole 102 is for running through the through hole of guider body 201 sidewalls, when center drill bit 2 assembled with guider 1, this through hole can align with pin breach 206.
Concentric slide block casing drilling tool of the present invention, center bit in above-described embodiment and guider are made up, wherein said reamer sheet 3 is positioned at the skewed slot 208 of drill body 201, reamer sheet 3 can be in skewed slot 208 interior slips, and the cooperation of the afterbody of described drill body 201 is installed in the drill bit tail end installing hole 106, the guider center roof vent is communicated with center roof vent 207, can from the guider center roof vent, ventilate and be passed in the center roof vent 207, drill bit middle part ash pit 203 is communicated with guider ash pit 104, be convenient to the drill bit deslagging, described pin breach 206 aligns with pin-and-hole 102, and it is interior fixing with center bit 2 with guider 1 to insert pin-and-hole 102 by solid pin 4, and the expansion pin 5 that described solid pin 4 is inserted in the pin-and-hole 102 is spacing.
The concentric slide block casing drilling tool that employing center bit of the present invention and guider are combined to form, the reamer sheet is rearward slided along the T-shaped skewed slot of center bit by the rock resistance when moving under the slide block casing drilling tool with one heart, forms reaming with pipe with guider end face location.When the slide block casing drilling tool upwards reeled with one heart, the reamer sheet was subjected to shoe resistance down sliding to dwindle withdrawal.Because of air latent drift angled-lift splits concentric simultaneous casing drilling tool of the present invention when the bounce-back of work impact grinding rock, semicircle reamer sheet slides up and down along T-shaped skewed slot and arc slot, need not lash space, guider correcting position is shorter than conventional drilling tool, and reaming break-up point and shoe near distance, slag stone fall after rise little, few, dreg discharging tunnel is short, deslagging speed is fast, and the shoe resistance is little, and drilling depth is fast.
As shown in Figure 3 and Figure 4, embodiment 3 is on the basis of embodiment 1, center bit of the present invention, drill body 201 front portions are the round boss structure, make drill body 201 front portions present the multistage boss of notch cuttype, adopt three grades of boss in this example, i.e. three grades of hierarchic structures, certainly can adopt according to actual needs 2 grades of boss structures or 4 grades of boss structures or 5 grades of boss structures or more multistage boss structure, between the boss at different levels with inclined-plane tapering transition reducing, so that drill body 201 is from beginning foremost the diameter minimum, then increase gradually, and carry out transition by the inclined-plane tapering, in the present embodiment, described skewed slot 208 is 3, and three skewed slots 208 are distributed on the outer peripheral face of drill body 201 with respect to 120 ° at central axis interval, arbitrary skewed slot 208 interior couplings have reamer sheet 3, the straight trough 210 that is communicated with skewed slot 208 also is set in drill body 201 front portions, this straight trough 210 is communicated with skewed slot 208, the initiating terminal of straight trough 210 is positioned at drill body 201, on the sidewall of the foremost boss of drill body 201 front portions, be provided with the anterior ash pit 212 of the drill bit that links to each other with straight trough 210 initiating terminals, carry out deslagging thereby be convenient to drill body 201 anterior tops; Reamer sheet 3 can slide in the straight trough 210 in skewed slot 208, the width of drill body 201 afterbodys is less than the middle part diameter, and the circular arc limit section of three reamer sheets 3 is stitched together, can form similar and circular configuration, can form the boss of afterbody, thereby be convenient to reaming, whole center bit front end area is little, then area increases gradually, and stressed concentrate met more firmly or the classification of can going ahead of the rest of larger rock smashes.On the two side of described skewed slot 208 rectangular channel is set, among dovetail groove or the dovetail groove any, make skewed slot 208 be the gathering sill of T shape structure, the present embodiment is selected rectangular channel, the afterbody of described drill body 201 is triangle cylinder, being provided with pin breach 206 on the triangle cylinder can certainly be semicircle cylinder, elliptic cylindrical, the quadrangle cylinder, the pentagon cylinder, the hexagon cylinder, a kind of in the medium non-circular cylinder of polygon or special-shaped cylinder, thereby be convenient to location and transmitting torque, be provided with pin breach 206 at triangle cylinder, the inside of described drill body 201 is provided with center roof vent 207, outer peripheral face at drill body 201 middle parts is provided with drill bit middle part ash pit 203, be provided with the drill bit middle part air vent 204 that is communicated with center roof vent 207 in the ash pit 203 of described drill bit middle part, be provided with the drill bit straight trough air vent 211 that is communicated with center roof vent 207 in the described straight trough 210, discharge directions is consistent with the direction of slagging tap, and meets soft mud dirt and can not be convenient to deslagging by plug-hole.On the outer peripheral face at drill body 201 middle parts of skewed slot 208 both sides, be provided with curve slope 213 and arcuate furrow 214; Described curve slope 213 can be bonded to each other with brill sheet side intrados 303, described arcuate furrow 214 can be fitted with brill sheet side convex body 307, be beneficial to seamlessly transitting of reamer sheet and center bit cylindrical and reduce moment of torsion strength, bore the wedge structure of bottom for tilting of sheet body 301, form and bore sheet front bevel 306, when reamer sheet 3 slides to straight trough 210 from skewed slot 208, this brill sheet front bevel 306 can fit with straight trough 210, thereby so that be arc-shaped transition between the external surface of the external surface of reamer sheet 3 and drill body, and the circular arc limit section of three reamer sheets 3 is close in together, form similar circular configuration as shown in Figure 5, and be positioned at the front portion of drill body.Without obvious broken line, arc transition reduces rotary resistance between three semicircle reamer sheets when center bit cylindrical and reaming.
As shown in Figure 2, the guider that mates with center bit of the present invention, comprise guider body 201, be provided with guider ash pit 104 on the outer peripheral face of described guider body 201, the two ends of guider body 201 are provided with the guider center roof vent along the center, one end of guider body 201 is provided with the drill bit tail end installing hole 106 in the triangular column hole that the afterbody with drill body 201 is complementary, be provided with pin-and-hole 102 and the guider air vent 103 that is communicated with the guider center roof vent on the periphery of described guider body 201, described pin-and-hole 102 is for running through the through hole of guider body 201 sidewalls, when center drill bit 2 assembled with guider 1, this through hole can align with pin breach 206.
Such as Fig. 1, Fig. 5 and shown in Figure 6, the concentric slide block casing drilling tool that employing center bit of the present invention and guider are combined to form, described reamer sheet 3 is positioned at the skewed slot 208 and straight trough 210 of drill body 201, reamer sheet 3 can be in skewed slot 208 and straight trough 210 interior slips, realize addressee and reaming, can slide with respect to skewed slot 208, the afterbody cooperation of described drill body 201 is installed in the drill bit tail end installing hole 106, with transmitting torque, the guider center roof vent is communicated with center roof vent 207, drill bit middle part ash pit 203 is communicated with guider ash pit 104, described pin breach 206 aligns with pin-and-hole 102, and it is interior fixing with center bit 2 with guider 1 to insert pin-and-hole 102 by solid pin 4, the expansion pin 5 that described solid pin 4 is inserted in the pin-and-hole 102 is spacing, with under confined state, center bit and guider being linked together, in skewed slot, deviate from the course of the work to prevent semicircle reamer sheet.
The concentric slide block casing drilling tool that employing center bit of the present invention and guider are combined to form, as shown in Figure 1, when moving under the slide block casing drilling tool with one heart, the reamer sheet is rearward slided along the T-shaped skewed slot of center bit by the rock resistance, forms reaming with pipe with guider end face location.As shown in Figure 5, when the slide block casing drilling tool upwards reeled with one heart, the reamer sheet was subjected to shoe resistance down sliding to dwindle withdrawal.Because of air latent drift angled-lift splits concentric simultaneous casing drilling tool of the present invention when the bounce-back of work impact grinding rock, semicircle reamer sheet slides up and down along T-shaped skewed slot and arc slot, need not lash space, guider correcting position is shorter than conventional drilling tool, and reaming break-up point and shoe near distance, slag stone fall after rise little, few, dreg discharging tunnel is short, deslagging speed is fast, and the shoe resistance is little, and drilling depth is fast.
Assemble this concentric slide block casing drilling tool: first that the flank of tooth that is inlaid with carbide alloy of center bit is downward, then three reamer sheets are inserted to respectively in the skewed slot of center bit, triangle dowel hole on the guider has the direction of pin-and-hole, align the sub-breach direction of serration spline pivot pin of center bit, the triangle dowel hole cover of guider is installed on the triangular prism of center bit.After this, connecting pin is inserted in the pin-and-hole of guider, pound again into hollow expansion pin, prevent that solid pin from coming off, center bit and guider are linked together.
The downward three reamer sheets of concentric slide block casing drilling tool arrive the front end of center bit during use in the effect lower slider of own wt, namely be in the addressee state, position shown in Figure 5, or make it be in the addressee state below manually three reamer sheets being pushed to, then be inserted in the sleeve pipe, the rotation drilling tool makes center bit and three reamer sheets pass shoe, then opens gas work.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. center bit, it is characterized in that: it comprises drill body (201) and reamer sheet (3), described drill body (201) is along on its central axis being the front portion, middle part and afterbody, drill body (201) front portion is arrow-shaped, taper or round boss structure, the diameter at drill body (201) middle part is greater than the diameter of front portion, drill body (201) is anterior to offer at least two skewed slots (208) to the outer peripheral face at middle part, the initiating terminal of this skewed slot (208) is drill body (201) front portion, and in the middle part of drill body (201), be groove, reamer sheet (3) is positioned at this skewed slot (208) and its coupling, reamer sheet (3) can be slided in skewed slot (208), all be inlaid with carbide alloy (6) on the external surface of drill body (201) front portion and reamer sheet (3), the afterbody of drill body (201) is non-circular cylinder.
2. center bit as claimed in claim 1, it is characterized in that: offer three skewed slots (208) at the anterior outer peripheral face to the middle part of drill body (201), and three skewed slots (208) are distributed in respect to 120 ° at central axis interval on the outer peripheral face of drill body (201), and coupling has reamer sheet (3) in arbitrary skewed slot (208).
3. center bit as claimed in claim 2 is characterized in that: on the two side of described skewed slot (208) rectangular channel, dovetail groove or dovetail groove are set, make skewed slot (208) be the gathering sill of T shape structure.
4. center bit as claimed in claim 1, it is characterized in that: the afterbody of described drill body (201) is triangle cylinder, semicircle cylinder, elliptic cylindrical, quadrangle cylinder, pentagon cylinder, hexagon cylinder, polygon or special-shaped cylinder, is provided with pin breach (206) at the afterbody of drill body (201).
5. as claimed in claim 1 or 2 or 3 or 4 center bit, it is characterized in that: described drill body (201) is anterior to be the round boss structure, make drill body (201) front portion present the multistage boss of notch cuttype, between the boss at different levels with inclined-plane tapering transition reducing, in drill body (201) front portion the straight trough (210) that is communicated with skewed slot (208) is set also, the initiating terminal of straight trough (210) is positioned at drill body (201); On the sidewall of the anterior foremost boss of drill body (201), be provided with the anterior ash pit (212) of the drill bit that links to each other with straight trough (210) initiating terminal; Reamer sheet (3) can slide in the straight trough (210) in skewed slot (208), and the width of drill body (201) afterbody is less than the middle part diameter.
6. center bit as claimed in claim 5, it is characterized in that: the inside of described drill body (201) is provided with center roof vent (207), outer peripheral face at drill body (201) middle part is provided with drill bit middle part ash pit (203), be provided with the drill bit middle part air vent (204) that is communicated with center roof vent (207) in the described drill bit middle part ash pit (203), be provided with the drill bit straight trough air vent (211) that is communicated with center roof vent (207) in the described straight trough (210).
7. such as the described center bit of one of claim 3 to 6, it is characterized in that: described reamer sheet (3) comprises that top combines with the bottom and forms the brill sheet body (301) of T shape structure, the top semicircular in shape structure of described brill sheet body (301), bore sheet body (301) bottom and be positioned at the non-arc-shaped edges middle part of boring sheet body (301), bore the brill sheet arc hypotenuse (302) of arc-shaped edges for tilting of sheet body (301), this place, angle, two ends of boring sheet body (301) is for boring sheet side convex body (307), bore sheet side convex body (307) and be the brill sheet side intrados (303) of arcuate structure to boring between sheet body (301) bottom, be provided with projection body (304) on the two side of described brill sheet body (301) bottom, bore sheet body (301) and match with gathering sill with the combination of projection body (304), reamer sheet (3) can be slided in gathering sill.
8. center bit as claimed in claim 7 is characterized in that: on the outer peripheral face at drill body (201) middle part of skewed slot (208) both sides, be provided with curve slope (213) and arcuate furrow (214); Described curve slope (213) can be bonded to each other with brill sheet side intrados (303), and described arcuate furrow (214) can be fitted with brill sheet side convex body (307).
9. guider with the center bit of one of right 1 to 8 coupling, it is characterized in that: comprise guider body (201), be provided with guider ash pit (104) on the outer peripheral face of described guider body (201), the two ends of guider body (201) are provided with the guider center roof vent along the center, one end of guider body (201) is provided with the non-circular drill bit tail end installing hole (106) that the afterbody with drill body (201) is complementary, be provided with pin-and-hole (102) and the guider air vent (103) that is communicated with the guider center roof vent on the periphery of described guider body (201), described pin-and-hole (102) is for running through the through hole of guider body (201) sidewall, when center drill bit (2) assembled with guider (1), this pin-and-hole (102) can align with pin breach (206).
10. the concentric slide block casing drilling tool that is combined to form of the guider of a center bit that adopts one of claim 1 to 8 and claim 9, it is characterized in that: described reamer sheet (3) is positioned at the skewed slot (208) of drill body (201), the afterbody cooperation of described drill body (201) is installed in the drill bit tail end installing hole (106), the guider center roof vent is communicated with center roof vent (207), drill bit middle part ash pit (203) is communicated with guider ash pit (104), described pin breach (206) aligns with pin-and-hole (102), and it is interior fixing with guider (1) and center bit (2) to insert pin-and-hole (102) by solid pin (4), and the expansion pin (5) that described solid pin (4) is inserted in the pin-and-hole (102) is spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410945.1A CN102926663B (en) | 2011-11-10 | 2012-10-24 | Concentric sliding block simultaneous casing drilling tool, center drilling bit and centralizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204426946 | 2011-11-10 | ||
| CN201120442694 | 2011-11-10 | ||
| CN201120442694.6 | 2011-11-10 | ||
| CN201210410945.1A CN102926663B (en) | 2011-11-10 | 2012-10-24 | Concentric sliding block simultaneous casing drilling tool, center drilling bit and centralizer |
Publications (2)
| Publication Number | Publication Date |
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| CN102926663A true CN102926663A (en) | 2013-02-13 |
| CN102926663B CN102926663B (en) | 2015-03-11 |
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| CN201210410945.1A Active CN102926663B (en) | 2011-11-10 | 2012-10-24 | Concentric sliding block simultaneous casing drilling tool, center drilling bit and centralizer |
| CN 201220549095 Withdrawn - After Issue CN203097720U (en) | 2011-11-10 | 2012-10-24 | Concentric slide block simultaneous casing drilling tool, central drill bit and centralizer |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220549095 Withdrawn - After Issue CN203097720U (en) | 2011-11-10 | 2012-10-24 | Concentric slide block simultaneous casing drilling tool, central drill bit and centralizer |
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| CN113334404B (en) * | 2021-06-03 | 2023-05-23 | 广东工业大学 | Karst cave detection robot |
| CN114856448A (en) * | 2022-04-28 | 2022-08-05 | 陕西太合智能钻探有限公司 | Drill bit for directional branch drilling and using method |
| KR20240133153A (en) * | 2023-02-28 | 2024-09-04 | 주식회사 정상이엔씨 | Structure supporting 3-square slide of the parallelogram type with the projecting/reception part on the main bit and 3-division bit and mechanism and apparatus thereof |
| KR102867041B1 (en) * | 2023-02-28 | 2025-10-01 | 최경희 | Structure supporting 3-square slide of the parallelogram type with the projecting/reception part on the main bit and 3-division bit and mechanism and apparatus thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN203097720U (en) | 2013-07-31 |
| CN102926663B (en) | 2015-03-11 |
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Address after: 618300 150 meters away from Luoxin Road, Guanghan City, Deyang City, Sichuan Province Patentee after: Guanghan Copry Technology Co.,Ltd. Address before: 618300 150 meters away from Luoxin Road, Guanghan City, Deyang City, Sichuan Province Patentee before: GUANGHAN WELL TUBE FACTORY |