CN102926663B - 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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- CN102926663B CN102926663B CN201210410945.1A CN201210410945A CN102926663B CN 102926663 B CN102926663 B CN 102926663B CN 201210410945 A CN201210410945 A CN 201210410945A CN 102926663 B CN102926663 B CN 102926663B
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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casing can be formed, and the semicircle-shaped expanding drilling pieces slide downwards, can be narrowed and withdrawn due to the resistance of a pipe boot during upward drawing.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 to prevent at dark, the construction of shallow bore hole Area cracked of correlation engineering; Be applicable to various rock-core borer, jumbolter, 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 for geological mapping, concentric slide block casing drilling tool is managed in following with one heart of a kind of down-hole hammer needed for relating to.
Background technology
The down-the-hole casing drilling tool sold in the market, major part is all the casing drilling tool of eccentric center principle, according to facts have proved for many years, all there is obvious defect in existing eccentric drilling tool or other concentric drilling tool, such as in use, torsional forces is large, boring circle, easily bit freezing, large with pipe resistance, eccentric swing amount large, drilling tool discontinuity, intensity difference, must reverse when pulling out back, and the technological deficiency of easy accident such as generation breaking of rod bar and sleeve pipe etc.
Summary of the invention
Goal of the invention of the present invention is: for above-mentioned Problems existing, there is provided a kind of structure simple, 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, obviously can strengthen crushing effect, and transmission is ingenious, torsional forces is little, and structure is reliable, resistance is little, and broken stone is even; In drilling process, torsional forces is very little 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 its central axis being front portion, middle part and afterbody, drill body front portion is in arrow-shaped, taper or round boss structure, diameter in the middle part of drill body is greater than anterior diameter, drill body front portion offers at least two skewed slots to the outer peripheral face at middle part, the initiating terminal of this skewed slot is that drill body is anterior, and be groove in the middle part of drill body, reamer sheet is positioned at this skewed slot and mates with it, reamer sheet can be slided in skewed slot, the external surface of and reamer sheet anterior at drill body is all inlaid with carbide alloy, the afterbody of drill body is non-circular cylinder.
Owing to have employed said structure, center bit comprises drill body, wherein drill body is column construction, and it is symmetrical with central axis, the direction of central axis is divided into front portion, middle part and afterbody, and it is anterior, integrative-structure is formed between middle part and afterbody, wherein drill body front portion is in arrow-shaped, taper or round boss structure, thus be convenient to drill body in use, center bit front end area is little, stressed concentrated, meet more firmly or larger rock can leading classification smash, diameter in the middle part of drill body is greater than anterior diameter, make in the middle part of drill body larger than anterior, make middle part can support front, ensure that it is stressed, to the outer peripheral face at middle part, at least two skewed slots are offered in drill body front portion, this skewed slot can be two, the skewed slot of three or four or more, the initiating terminal of this skewed slot is that drill body is anterior, and in the middle part of drill body, be groove, make this skewed slot be from the initiating terminal of drill body front portion to drill body in the middle part of the groove of tail end, because drill body front portion is in arrow-shaped, taper or round boss structure, therefore this groove is the skewed slot of incline structure, reamer sheet is set in this skewed slot, this reamer sheet can mate with skewed slot, and can slide relative to skewed slot, make reamer sheet can slide to drill body front portion in the middle part of drill body.When this drilling tool moves down, reamer sheet is by rock resistance rearward slip skewed slot end, thus borehole-enlarging drilling tool can be formed carry out reaming, when drilling tool is upwards packed up by needs, upwards reel center bit, reamer sheet slides down to skewed slot initiating terminal by shoe resistance, thus make drill bit reduce withdrawal, can directly regain without the need to reversion, it is fast easy to operate, the external surface of simultaneously and reamer sheet anterior at drill body is all inlaid with carbide alloy, thus carry out holing and reaming, ensure that the crushing effect of center bit is good, be convenient to boring, the afterbody of drill body is non-circular cylinder, adopt non-circular cylinder can enable to cooperatively interact between this drill bit and guider, registration when drill body is installed in guider, and the moment of torsion on drill bit can be passed on guider, be convenient to the transmission of moment of torsion.Center bit of the present invention, structure is simple, and easy and simple to handle, easy-to-use, obviously can strengthen crushing effect, and transmission is ingenious, torsional forces is little, and structure is reliable, and resistance is little, and broken stone is even.
Center bit of the present invention, to the outer peripheral face at middle part, offer three skewed slots in drill body front portion, and three skewed slots are distributed on the outer peripheral face of drill body relative to 120 °, central axis interval, in arbitrary skewed slot, coupling has reamer sheet.
Owing to have employed said structure, skewed slot is three, and be distributed on the outer peripheral face of drill body, and three skewed slots are relative to 120 °, central axis interval, wherein in arbitrary skewed slot, coupling has reamer sheet, three pieces of reamer sheets mutual angle centered by the axis of center bit is made to be 120 degree, join merga pass skewed slot with the skewed slot of center bit and locate transmitting torque, and the uniform force on each reamer sheet, in use, three reamer sheets slide to the tail end of skewed slot, a similar full circle can be formed thus be convenient to form one-level boss, thus reaming can be carried out at the end of drill bit, meet more firmly or larger rock time, the leading portion of drill bit first carries out classification and smashes, the last hole wall that will expand is thinner, the afterbody boss that reamer sheet is formed, it is hit less, and torsional forces is very little in drilling process, without swinging, drilling rod is concentric, become hole circle.
Center bit of the present invention, the two side of described skewed slot is arranged rectangular channel, dovetail groove or dovetail groove, makes skewed slot be the gathering sill of T-shaped structure.
Owing to have employed said structure, the two side of skewed slot arranges the groove of the various ways structures such as rectangular channel, dovetail groove or dovetail groove, the tangent plane of skewed slot is made to form the gathering sill of T-shaped structure, reamer sheet can slide in this gathering sill, tail end is slided to 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, and the afterbody of drill body is provided with pin breach.
Owing to have employed said structure, the afterbody of drill body can adopt triangle cylinder, semicircle cylinder, elliptic cylindrical, quadrangle cylinder, pentagon cylinder, hexagon cylinder, the various structures such as polygon or special-shaped cylinder form, thus be convenient to the registration between drill body and guider, and the moment of torsion on drill body and impact can be passed to guider, on the afterbody of drill body, be provided with pin breach simultaneously, be convenient to pin breach and locating hole and the filled circles pin of drill body by himself be connected with hollow expansion pin and locate, structure is simple, fiting effect is good.But avoid adopting circular cylinder, because the afterbody of the drill body of circular cylinder is after being inserted in guider, be not only inconvenient to locate but also be not easy to transmitting torque.
Center bit of the present invention, described drill body front portion is round boss structure, drill body front portion is made to present the multistage boss of notch cuttype, with inclined-plane taper transitions reducing between boss at different levels, at the straight trough that the anterior also setting of drill body is communicated with skewed slot, the initiating terminal of straight trough is positioned at drill body, on the sidewall of the boss foremost of drill body front portion, is provided with the anterior ash pit of the drill bit be connected with straight trough initiating terminal; Reamer sheet can slide in straight trough in skewed slot, and the width of drill body afterbody is less than mid diameter.
Owing to have employed said structure, this drill body front portion is round boss structure, drill body front portion is made to present the multistage boss of notch cuttype, when chance more firmly or larger rock can leading classification smash, reduce drill body and reamer sheet impact, thus ensure its life-span, and with inclined-plane taper transitions reducing between boss at different levels, from making drill body front portion in convex top, and diameter progressively becomes large, inclined-plane taper transitions between boss at different levels, drill body is anterior also arranges the straight trough be communicated with skewed slot, the initiating terminal of straight trough is positioned at drill body front portion, therefore straight trough is connected with skewed slot, make it from the initiating terminal of straight trough until tail end in the middle part of drill body, reamer sheet can slide in straight trough in skewed slot, thus be convenient to the folding and unfolding of reamer sheet, when drilling tool moves down, reamer sheet rearward slides by rock resistance and forms reaming with pipe, when drilling tool upwards reels, reamer sheet reduces withdrawal by shoe resistance slide downward, can directly regain without the need to reversion.The sidewall of the boss foremost of drill body front portion is provided with the anterior ash pit of drill bit, and the anterior ash pit of this drill bit is connected with straight trough initiating terminal, is beneficial to deslagging; The width of drill body afterbody is less than mid diameter, thus is convenient to control drill body and coordinating between 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 in the middle part of drill body is provided with ash pit in the middle part of drill bit, be provided with in ash pit in the middle part of described drill bit air vent in the middle part of the drill bit be communicated with center roof vent-, be provided with the drill bit straight trough air vent be communicated with center roof vent in described straight trough.
Owing to have employed said structure, in the middle part of drill bit, ash pit is convenient to the deslagging of drill bit, and in the middle part of center bit, in ash pit, being drilled with the steam vent of the main dreg discharging tunnel equidirectional with guider, discharge directions is consistent with direction of slagging tap, and not meeting soft mud dirt by drilling tool pressure can not be convenient to deslagging by plug-hole.
Center bit of the present invention, described reamer sheet comprises top and combines with bottom and form the brill sheet body of T-shaped structure, the top semicircular in shape structure of described brill sheet body, the arc-shaped edges boring sheet body is the brill sheet arc hypotenuse tilted, angle, the two ends place of this brill sheet body is for boring sheet side convex body, boring sheet body lower part is positioned in the middle part of the non-arc-shaped edges of brill sheet body, bore the brill sheet side intrados that sheet side convex body is extremely arcuate structure between brill sheet body lower part, the two side of described brill sheet body lower part is provided with projection body, bore sheet body to match with gathering sill with the combination of projection body, reamer sheet can be slided in gathering sill.
Owing to have employed said structure, reamer sheet can divide the top and bottom that are integrated, combine both it and form the brill sheet body of T-shaped structure, bore the top semicircular in shape structure of sheet body, make the split of multiple reamer sheet together, similar circle can be formed, thus last one deck boss can be formed, thus by hierarchical layered, rock is smashed, last one deck is reamer sheet, its impact be subject to is minimum, and reaming is effective, thus increase its application life, the arc-shaped edges boring sheet body is the brill sheet arc hypotenuse tilted, make after three reamer sheets spread apart, its arc-shaped edges and drill body center outer surface can form similar round structure, thus form the reaming boss of last one deck, be convenient to carry out reaming.Angle, the two ends place of this brill sheet body is for boring sheet side convex body, boring sheet body lower part is positioned in the middle part of the non-arc-shaped edges of brill sheet body, bore the brill sheet side intrados that sheet side convex body is extremely arcuate structure between brill sheet body lower part, the two side of described brill sheet body lower part is provided with projection body, bore sheet body to match with gathering sill with the combination of projection body, reamer sheet can be slided in gathering sill.Projection body is convenient to bore sheet body on the one hand and is slided in gathering sill, in addition can transmitting torque, thus ensure that the moment of torsion that reamer sheet bears is less, be convenient to reamer sheet move relative to drill body simultaneously, cooperatively interact between three reamer sheets, when drilling tool moves down, reamer sheet rearward to slide formation borehole-enlarging drilling tool by rock resistance, when drilling tool upwards reels, reamer sheet reduces withdrawal by shoe resistance slide downward, can directly regain without the need to reversion.
Center bit of the present invention, on the outer peripheral face in the middle part of the drill body 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 have employed said structure, described curve slope can be bonded to each other with brill sheet side intrados, described arcuate furrow can be fitted with brill sheet side convex body, and the outer peripheral face in the middle part of reamer sheet and drill body is fitted, and semicircle reamer sheet when making center bit cylindrical and reaming is arc transition, without obvious broken line, remarkable reduction rotary resistance, in drilling process, torsional forces is very little, without swinging, drilling rod is concentric, becomes hole circle.
The guider mated with center bit of the present invention, comprise guider body, the outer peripheral face of described guider body is provided with guider ash pit, the two ends of guider body are centrally provided with guider center roof vent, one end of guider body is provided with the non-circular drill bit tail end installing hole matched with the afterbody of drill body, the periphery of described guider body is provided with pin-and-hole and the guider air vent being communicated with guider center roof vent, described pin-and-hole is the through hole running through guider body sidewall, when center bit and guider assemble, this through hole can align with pin breach.
Owing to have employed said structure, this guider mates mutually with center bit, on the outer peripheral face of guider body, be wherein provided with the guider ash pit being convenient to deslagging, and be centrally provided with guider center roof vent at the two ends of guider body, be convenient to be communicated with the central through hole on center bit, and by the enterprising gas that works of guider, one end of guider is provided with the non-circular drill bit tail end installing hole matched with the afterbody of drill body, this drill bit tail end installing hole can be tri-angle-holed, semi-circular hole, slotted eye, quadrilateral hole, pentagon hole, hexagonal hole, the multiple hole such as polygonal hole or irregularly-shaped hole, but must be the identical non-circular hole that matches with the afterbody of drill body, this drill bit tail end installing hole is mainly used in cooperatively interacting with the afterbody of drill body, thus drill body is positioned, and can transmitting torque, pin-and-hole is the through hole running through guider body sidewall, when center bit and guider assemble, this through hole can align with pin breach, thus pin can be inserted be fixed on the positioning, ensure the stable connection between drill bit and guider, ensure 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 drill bit tail end installing hole, guider center roof vent is communicated with center roof vent, in the middle part of drill bit, ash pit is communicated with guider ash pit, described pin breach aligns with pin-and-hole, and by guider and center bit being fixed in solid pin insertion pin-and-hole, the expansion pin that described solid pin is inserted in pin-and-hole is spacing.
Owing to have employed said structure, reamer sheet freely up and down slides, then without the need to gap of rebounding when impact cutting is spitted, the halfpace position of guider is shorter than conventional drilling tool to the distance of reamer sheet, closely, dreg discharging tunnel is short, and slag stone falls after rise few for reaming break-up point and shoe distance, deslagging speed is fast, and shoe resistance is little, drilling depth is fast; In whole drilling process, tube drawing power can be reduced, easily reclaim, and disconnected shoe not easily occur, with accidents such as pipe, drill bit, drilling rods.The end face that guider coordinates with center bit, below the middle part of this end face and center bit in the assembled condition, reducing end face is affixed the rear retainer merging and form semicircle reamer sheet, 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.The concentric slide block casing drilling tool that employing center bit of the present invention and guider are combined to form, obviously can strengthen crushing effect, and transmission is ingenious, torsional forces is little, and structure is reliable, and resistance is little, and broken stone is even; In drilling process, torsional forces is very little simultaneously, and without swinging, drilling rod is concentric, becomes hole circle.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, center bit of the present invention, center bit front end area is little, stressed concentrate, meet more firmly or larger rock can leading classification smash;
2, center bit of the present invention, three pieces of semicircle reamer sheets mutual angle centered by the axis of center bit is 120 degree, join the T-shaped skewed slot of merga pass with the T-shaped skewed slot of center bit and locate transmitting torque, semicircle reamer sheet when center bit cylindrical and reaming is arc transition, without obvious broken line, significantly reduces rotary resistance, in drilling process, torsional forces is very little, without swinging, drilling rod is concentric, becomes hole circle;
3, guider of the present invention, the non-cylinder slotted eye of guider is connected with the non-cylinder of arrow-shaped center bit and coordinates transmitting torque; Center bit, guider to be connected with hollow expansion pin by self locating slot and locating hole and filled circles pin locates, and simply, fiting effect is good for structure;
4, concentric slide block casing drilling tool of the present invention, when drilling tool moves down, reamer sheet rearward slides by rock resistance and forms reaming with pipe, and when drilling tool upwards reels, reamer sheet reduces withdrawal by shoe resistance slide downward, can directly regain without the need to reversion;
5, concentric slide block casing drilling tool of the present invention, be drilled with the steam vent of the main dreg discharging tunnel equidirectional with guider in the middle part of center bit in ash pit, discharge directions is consistent with direction of slagging tap, and not meeting soft mud dirt by drilling tool pressure can not be convenient to deslagging by plug-hole;
6, concentric slide block casing drilling tool of the present invention, reamer sheet freely up and down slides, then without the need to gap of rebounding when impact cutting is spitted, the halfpace position of guider is shorter than conventional drilling tool to the distance of reamer sheet, closely, dreg discharging tunnel is short, and slag stone falls after rise few for reaming break-up point and shoe distance, deslagging speed is fast, and 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 disconnected shoe not easily occurs, with accidents such as pipe, drill bit, drilling rods.
Accompanying drawing explanation
Fig. 1 is that concentric slide block casing drilling tool of the present invention puts part view;
Fig. 2 is the structural representation of guider in the present invention;
Fig. 3 is the structural representation of reamer sheet in the present invention;
Fig. 4 is the structural representation of center bit in 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 in figure: 1-guider, 2-center bit, 3-reamer sheet, 4-solid pin, 5-expansion pin, 6-carbide alloy, 101-guider body, 102-pin-and-hole, 103-guider air vent, 104-guider ash pit, 105-guider endoporus, 106-drill bit tail end installing hole, 201-drill body, 202-drill bit step surface, ash pit in the middle part of 203-drill bit, air vent in the middle part of 204-drill bit, 205-drill bit afterbody, 206-pin breach, 207-center roof vent, 208-skewed slot, 209-T shape groove, 210-straight trough, 211-drill bit straight trough air vent, the anterior ash pit of 212-drill bit, 213-curve slope, 214-arcuate furrow, 215-straight trough stopper, 301-bores sheet body, 302-bores sheet arc hypotenuse, 303-bores sheet side intrados, 304-projection body, 305-bores sheet side, 306-bores sheet front bevel, 307-bores sheet side convex body.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, 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, be not intended to limit the present invention.
embodiment 1
Center bit of the present invention, comprise drill body 201 and reamer sheet 3, described drill body 201 is along its central axis being front portion, middle part and afterbody, and it is anterior, middle part and afterbody are structure as a whole, drill body 201 front portion is in arrow-shaped structure, diameter in the middle part of drill body 201 is greater than anterior diameter, drill body 201 front portion to the outer peripheral face at middle part offers at least two skewed slots 208, the two side of described skewed slot 208 arranges rectangular channel, skewed slot 208 is made to be the gathering sill of T-shaped structure, this skewed slot 208 can be 2, 3, 4, 5 or multiple, the present embodiment preferably uses 2 skewed slots 208, and 2 skewed slots 208 are distributed on the outer peripheral face of drill body 201 relative to 180 °, central axis interval, in arbitrary skewed slot 208, coupling has reamer sheet 3, the initiating terminal of this skewed slot 208 is that drill body 201 is anterior, on the outer peripheral face of also i.e. arrow-shaped structure, and in the middle part of drill body 201 on be groove, reamer sheet 3 is positioned at this skewed slot 208 and mates with it, reamer sheet 3 can be slided in skewed slot 208, described reamer sheet 3 comprises top and combines with bottom and form the brill sheet body 301 of T-shaped structure, its middle and upper part and bottom are structure as a whole, boring sheet body 301 bottom is positioned in the middle part of the non-arc-shaped edges of brill sheet body 301, the top semicircular in shape structure of described brill sheet body 301, two are bored sheet body 301 and are close together, a similar circular configuration can be formed, the arc-shaped edges boring sheet body 301 is the brill sheet arc hypotenuse 302 tilted, thus reduction resistance, angle, the two ends place of this brill sheet body 301 is for boring sheet side convex body 307, it is the brill sheet side intrados 303 of arcuate structure between brill sheet side convex body 307 to brill sheet body 301 bottom, on outer peripheral face in the middle part of the drill body 201 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, the two side of described brill sheet body 301 bottom is provided with projection body 304, this projection body 304 is rectangular configuration, and brill sheet body 301 matches with gathering sill with the combination of projection body 304, makes reamer sheet 3 can slide in gathering sill.The external surface of and reamer sheet 3 anterior at drill body 201 is all inlaid with carbide alloy 6, the afterbody of drill body 201 is triangle cylinder, semicircle cylinder, elliptic cylindrical, quadrangle cylinder, pentagon cylinder, hexagon cylinder, the cylinder of the various structures such as polygon or special-shaped cylinder, but do not select circular cylinder, the cross sectional shape of middle Choice of Bits body 201 afterbody of the present embodiment is cut round edge for circular by two parallel lines, its two limits are straight line, article two, limit is circular arc, thus be convenient to the afterbody of drill body 201 and guider are positioned and is convenient to transmitting torque, wherein on the afterbody of this drill body 201, be provided with pin breach 206.The inside of described drill body 201 is provided with center roof vent 207, outer peripheral face in the middle part of drill body 201 is provided with ash pit 203 in the middle part of drill bit, in the middle part of described drill bit, in ash pit 203, is provided with air vent-204 in the middle part of the drill bit be communicated with center roof vent 207.
The guider mated with center bit of the present invention, comprise guider body 201, the outer peripheral face of described guider body 201 is provided with guider ash pit 104, the two ends of guider body 201 are centrally provided with guider center roof vent, one end of guider body 201 is provided with the non-circular drill bit tail end installing hole 106 matched with the afterbody of drill body 201, this drill bit tail end installing hole can be tri-angle-holed, semi-circular hole, slotted eye, quadrilateral hole, 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, thus drill body is positioned, and can transmitting torque, therefore the drill bit tail end installing hole 106 in the present embodiment selects the hole with drill body afterbody same shape, namely cross sectional shape is cut round edge for circular by two parallel lines, its two limits are straight line, article two, limit is the hole of circular arc, the periphery of described guider body 201 is provided with pin-and-hole 102 and the guider air vent 103 being communicated with guider center roof vent, described pin-and-hole 102 is for running through the through hole of guider body 201 sidewall, when center bit 2 assembles 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 combined, wherein said reamer sheet 3 is positioned at the skewed slot 208 of drill body 201, reamer sheet 3 can slide in skewed slot 208, and the cooperation of the afterbody of described drill body 201 is installed in drill bit tail end installing hole 106, guider center roof vent is communicated with center roof vent 207, can ventilate from guider center roof vent is passed in center roof vent 207, in the middle part of drill bit, ash pit 203 is communicated with guider ash pit 104, be convenient to drill bit deslagging, described pin breach 206 aligns with pin-and-hole 102, and inserted in pin-and-hole 102 by solid pin 4 guider 1 and center bit 2 are fixed, the expansion pin 5 that described solid pin 4 is inserted in 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, when moving under concentric slide block casing drilling tool, reamer sheet rearward slides by the T-shaped skewed slot of rock resistance centrally drill bit, forms reaming with pipe with guider end face location.When concentric slide block casing drilling tool upwards reels, reamer sheet reduces withdrawal by shoe resistance slide downward.Because air latent drift angled-lift splits concentric simultaneous casing drilling tool of the present invention is when working impact fractured rock rebounds, semicircle reamer sheet slides up and down along T-shaped skewed slot and arc slot, without the need to lash space, guider correcting position is shorter than conventional drilling tool, and closely, slag stone falls after rise little, few for reaming break-up point and shoe distance, dreg discharging tunnel is short, deslagging speed is fast, and shoe resistance is little, and drilling depth is fast.
embodiment 2
Embodiment 2, on the basis of embodiment 1, adopts the anterior tapered structure of drill body 201, chamfered transition in taper type between drill body 201 front portion and middle part, described skewed slot 208 is 4, four skewed slots 208 are distributed on the outer peripheral face of drill body 201 relative to 90 °, central axis interval, in arbitrary skewed slot 208, coupling has reamer sheet 3, the two side of described skewed slot 208 arranges rectangular channel, any one among dovetail groove or dovetail groove, skewed slot 208 is made to be the gathering sill of T-shaped structure, the present embodiment selects dovetail groove, projection body 304 matches with gathering sill, particularly coordinate with this dovetail groove, thus be convenient to reamer sheet 3 and slide in gathering sill, the afterbody of described drill body 201 is hexagon cylinder, this hexagon cylinder is provided with pin breach 206, it can certainly be semicircle cylinder, elliptic cylindrical, quadrangle cylinder, pentagon cylinder, hexagon cylinder, one in polygon or the medium non-circular column of special-shaped cylinder, thus be convenient to location and transmitting torque.Same principle, the guider mated with center bit adopted in the present embodiment, on the basis of embodiment 1, described drill bit tail end installing hole 106 selects the hexagon post holes identical with drill body 201 afterbody, thus is convenient to drill body 201 afterbody to be installed in drill bit tail end installing hole 106.Concentric slide block casing drilling tool in the present embodiment, similar to embodiment 1, mainly center bit and guider are cooperatively interacted fixing.
embodiment 3
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 portion is round boss structure, drill body 201 front portion is made to present the multistage boss of notch cuttype, three grades of boss are adopted in this example, i.e. three grades of hierarchic structures, certainly 2 grades of boss structures or 4 grades of boss structures or 5 grades of boss structures or more multistage boss structure can be adopted according to actual needs, with inclined-plane taper transitions reducing between boss at different levels, make drill body 201 diameter from foremost minimum, then increase gradually, and carry out transition by 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 relative to 120 °, central axis interval, in arbitrary skewed slot 208, coupling has reamer sheet 3, the straight trough 210 be communicated with skewed slot 208 is also set in drill body 201 front portion, 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 boss foremost of drill body 201 front portion, be provided with the anterior ash pit 212 of the drill bit be connected with straight trough 210 initiating terminal, thus be convenient to the anterior top of drill body 201 and carry out deslagging, reamer sheet 3 can slide in straight trough 210 in skewed slot 208, the width of drill body 201 afterbody is less than mid diameter, and the circular arc edge of three reamer sheets 3 is stitched together, similar and circular configuration can be formed, the boss of afterbody can be formed, thus be convenient to reaming, whole center bit front end area is little, then area increases gradually, stressed concentrate, meet more firmly or larger rock can leading classification smash.The two side of described skewed slot 208 arranges rectangular channel, any one among dovetail groove or dovetail groove, skewed slot 208 is made to be the gathering sill of T-shaped structure, the present embodiment selects rectangular channel, the afterbody of described drill body 201 is triangle cylinder, triangle cylinder being provided with pin breach 206 can certainly be semicircle cylinder, elliptic cylindrical, quadrangle cylinder, pentagon cylinder, hexagon cylinder, one in polygon or the medium non-circular column of special-shaped cylinder, thus be convenient to location and transmitting torque, triangle cylinder is provided with pin breach 206, the inside of described drill body 201 is provided with center roof vent 207, outer peripheral face in the middle part of drill body 201 is provided with ash pit 203 in the middle part of drill bit, air vent-204 in the middle part of the drill bit be communicated with center roof vent 207 is provided with in ash pit 203 in the middle part of described drill bit, the drill bit straight trough air vent 211 be communicated with center roof vent 207 is provided with in described straight trough 210, discharge directions is consistent with direction of slagging tap, meet soft mud dirt and can not be convenient to deslagging by plug-hole.On outer peripheral face in the middle part of the drill body 201 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 reamer sheet and seamlessly transitting of center bit cylindrical reduces moment of torsion strength, the bottom of boring sheet body 301 is the wedge structure tilted, formed 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, thus make to be arc-shaped transition between the external surface of reamer sheet 3 and the external surface of drill body, and the circular arc edge of three reamer sheets 3 is close together, form similar circular configuration as shown in Figure 5, and be positioned at the front portion of drill body.Without obvious broken line between three when center bit cylindrical and reaming semicircle reamer sheets, arc transition, reduces rotary resistance.
As shown in Figure 2, the guider mated with center bit of the present invention, comprise guider body 201, the outer peripheral face of described guider body 201 is provided with guider ash pit 104, the two ends of guider body 201 are centrally provided with guider center roof vent, one end of guider body 201 is provided with the drill bit tail end installing hole 106 of the triangle post holes matched with the afterbody of drill body 201, the periphery of described guider body 201 is provided with pin-and-hole 102 and the guider air vent 103 being communicated with guider center roof vent, described pin-and-hole 102 is for running through the through hole of guider body 201 sidewall, when center bit 2 assembles with guider 1, this through hole can align with pin breach 206.
As Fig. 1, shown in Fig. 5 and Fig. 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 skewed slot 208 and the straight trough 210 of drill body 201, reamer sheet 3 can slide in skewed slot 208 with straight trough 210, realize addressee and reaming, can slide relative to skewed slot 208, the afterbody cooperation of described drill body 201 is installed in drill bit tail end installing hole 106, with transmitting torque, guider center roof vent is communicated with center roof vent 207, in the middle part of drill bit, ash pit 203 is communicated with guider ash pit 104, described pin breach 206 aligns with pin-and-hole 102, and inserted in pin-and-hole 102 by solid pin 4 guider 1 and center bit 2 are fixed, the expansion pin 5 that described solid pin 4 is inserted in pin-and-hole 102 is spacing, for in the assembled condition center bit and guider being linked together, deviate from skewed slot in 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 concentric slide block casing drilling tool, reamer sheet rearward slides by the T-shaped skewed slot of rock resistance centrally drill bit, forms reaming with pipe with guider end face location.As shown in Figure 5, when concentric slide block casing drilling tool upwards reels, reamer sheet reduces withdrawal by shoe resistance slide downward.Because air latent drift angled-lift splits concentric simultaneous casing drilling tool of the present invention is when working impact fractured rock rebounds, semicircle reamer sheet slides up and down along T-shaped skewed slot and arc slot, without the need to lash space, guider correcting position is shorter than conventional drilling tool, and closely, slag stone falls after rise little, few for reaming break-up point and shoe distance, dreg discharging tunnel is short, deslagging speed is fast, and shoe resistance is little, and drilling depth is fast.
Assemble this concentric slide block casing drilling tool: first by downward for the flank of tooth being inlaid with carbide alloy of center bit, then three pieces of reamer sheets are inserted in the skewed slot of center bit respectively, triangle dowel hole on 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, then pound into hollow expansion pin, prevent solid pin from coming off, center bit and guider are linked together.
During use the downward three pieces of reamer sheets of concentric slide block casing drilling tool in the effect lower slider of own wt to the front end of center bit, namely addressee state is in, position shown in Fig. 5, or make it be in addressee state below manually being pushed to by three pieces of reamer sheets, then be inserted in sleeve pipe, rotary tools makes center bit and three pieces of reamer sheets pass shoe, then opens gas work.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a center bit, it is characterized in that: it comprises drill body (201) and reamer sheet (3), described drill body (201) is along its central axis being front portion, middle part and afterbody, the diameter at drill body (201) middle part is greater than anterior diameter, drill body (201) front portion offers at least two skewed slots (208) to the outer peripheral face at middle part, the initiating terminal of this skewed slot (208) is that drill body (201) is anterior, and be groove at drill body (201) middle part, reamer sheet (3) is positioned at this skewed slot (208) and mates with it, reamer sheet (3) can be slided in skewed slot (208), the external surface of and reamer sheet (3) anterior at drill body (201) is all inlaid with carbide alloy (6), the afterbody of drill body (201) is non-circular cylinder, described drill body (201) front portion is round boss structure, drill body (201) front portion is made to present the multistage boss of notch cuttype, with inclined-plane taper transitions reducing between boss at different levels, also arrange the straight trough (210) be communicated with skewed slot (208) in drill body (201) front portion, the initiating terminal of straight trough (210) is positioned at drill body (201), on the sidewall of the boss foremost of drill body (201) front portion, be provided with the anterior ash pit (212) of the drill bit be connected with straight trough (210) initiating terminal, reamer sheet (3) can slide in straight trough (210) in skewed slot (208), and the width of drill body (201) afterbody is less than mid diameter.
2. center bit as claimed in claim 1, it is characterized in that: to the outer peripheral face at middle part, offer three skewed slots (208) in drill body (201) front portion, and three skewed slots (208) are distributed on the outer peripheral face of drill body (201) relative to 120 °, central axis interval, in arbitrary skewed slot (208), coupling has reamer sheet (3).
3. center bit as claimed in claim 2, is characterized in that: the two side of described skewed slot (208) arranges rectangular channel, dovetail groove or dovetail groove, makes the gathering sill that skewed slot (208) is T-shaped 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 or hexagon cylinder, and the afterbody of drill body (201) is provided with pin breach (206).
5. center bit as claimed in claim 1, it is characterized in that: the inside of described drill body (201) is provided with center roof vent (207), the outer peripheral face at drill body (201) middle part is provided with ash pit in the middle part of drill bit (203), be provided with air vent-(204) in the middle part of the drill bit be communicated with center roof vent (207) in ash pit (203) in the middle part of described drill bit, in described straight trough (210), be provided with the drill bit straight trough air vent (211) be communicated with center roof vent (207).
6. center bit as claimed in claim 3, it is characterized in that: described reamer sheet (3) comprises top and combines with bottom and form the brill sheet body (301) of T-shaped structure, the top semicircular in shape structure of described brill sheet body (301), boring sheet body (301) bottom is positioned in the middle part of the non-arc-shaped edges of brill sheet body (301), the arc-shaped edges boring sheet body (301) is brill sheet arc hypotenuse (302) tilted, angle, the two ends place of this brill sheet body (301) is for boring sheet side convex body (307), bore brill sheet side intrados (303) that sheet side convex body (307) is extremely arcuate structure between brill sheet body (301) bottom, the two side of described brill sheet body (301) bottom is provided with projection body (304), bore sheet body (301) to match with gathering sill with the combination of projection body (304), reamer sheet (3) can be slided in gathering sill.
7. center bit as claimed in claim 6, 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).
8. the guider mated with the center bit of one of right 1 to 7, it is characterized in that: comprise guider body (101), the outer peripheral face of described guider body (101) is provided with guider ash pit (104), the two ends of guider body (101) are centrally provided with guider center roof vent, one end of guider body (101) is provided with the non-circular drill bit tail end installing hole (106) matched with the afterbody of drill body (101), the periphery of described guider body (101) is provided with pin-and-hole (102) and the guider air vent (103) being communicated with guider center roof vent, described pin-and-hole (102) is for running through the through hole of guider body (101) sidewall, when center bit (2) assembles with guider (1), this pin-and-hole (102) can align with pin breach (206).
9. the concentric slide block casing drilling tool adopting the center bit of one of claim 1 to 7 and the guider of claim 8 to be combined to form, 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 drill bit tail end installing hole (106), guider center roof vent is communicated with center roof vent (207), in the middle part of drill bit, ash pit (203) is communicated with guider ash pit (104), described pin breach (206) is alignd with pin-and-hole (102), and inserted fixing to guider (1) and center bit (2) in pin-and-hole (102) by solid pin (4), the expansion pin (5) that described solid pin (4) is inserted in 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 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120442694.6 | 2011-11-10 | ||
| CN201120442694 | 2011-11-10 | ||
| CN2011204426946 | 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 |
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| Publication Number | Publication Date |
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| CN102926663A CN102926663A (en) | 2013-02-13 |
| CN102926663B true 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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| 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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Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102926663B (en) * | 2011-11-10 | 2015-03-11 | 广汉市井管厂 | Concentric sliding block simultaneous casing drilling tool, center drilling bit and centralizer |
| CN103114812B (en) * | 2013-03-05 | 2014-06-18 | 山东托普森金刚石钻头有限公司 | Diamond compact annular concentric simultaneous casing drilling bit and working method thereof |
| CN103195361B (en) * | 2013-04-19 | 2015-11-04 | 耿晓西 | Down-hole hammer |
| CN103790519B (en) * | 2014-02-17 | 2015-12-30 | 广汉市井管厂 | A kind of centrifugal block for clutch use casing drilling tool and assembly method thereof |
| CN105089506B (en) * | 2015-09-18 | 2017-09-05 | 洛阳中岩工程材料有限公司 | A kind of double-layer cross self-drilling anchor rod bit |
| CN105255303A (en) * | 2015-11-27 | 2016-01-20 | 常熟市地大探矿机械厂 | Concentric pipe-following drilling tool |
| CN107620572B (en) * | 2016-07-13 | 2019-04-16 | 煤科集团沈阳研究院有限公司 | A kind of major diameter two-stage combined type artificial diamond compact drill bit |
| CN106089092B (en) * | 2016-08-11 | 2019-03-12 | 中国石油大学(华东) | A kind of drill bit of adjustable drill bit body dimension |
| CN106337656B (en) * | 2016-08-19 | 2018-08-10 | 盘锦辽河油田泰成实业有限责任公司 | Reaming pdc drill bits in a kind of pressure |
| CN106320987B (en) * | 2016-08-19 | 2018-08-31 | 沧州格锐特钻头有限公司 | A kind of interior reaming PDC drill bit |
| CN107842317B (en) * | 2017-11-27 | 2019-07-30 | 中煤科工集团西安研究院有限公司 | Hard-rock boring punching composite drill bit |
| CN108952596A (en) * | 2018-06-27 | 2018-12-07 | 江小三 | It is a kind of from the wear-resisting wing plate of sharp type |
| CN108716366B (en) * | 2018-08-01 | 2023-12-19 | 洛阳恒诺锚固技术有限公司 | Combined double-layer drill bit and self-drilling type anchoring system |
| CN109915026A (en) * | 2019-04-26 | 2019-06-21 | 文泓润 | A kind of self-centering concentric simultaneous casing drilling tool |
| CN110130832A (en) * | 2019-06-11 | 2019-08-16 | 广汉珂普瑞科技有限公司 | A kind of centrifugal casing drilling tool and its manufacturing method |
| CN110439467A (en) * | 2019-07-30 | 2019-11-12 | 长沙天和钻具机械有限公司 | A kind of reaming block formula concentric simultaneous casing drilling tool |
| CN117188975A (en) * | 2019-09-05 | 2023-12-08 | 武穴市金锐精密锻造股份有限公司 | Rotary block type down-the-hole pipe-following drill bit |
| CN112096293B (en) * | 2020-11-17 | 2021-02-09 | 胜利油田固邦石油装备有限责任公司 | Variable-diameter drill bit for oil field drilling |
| CN113062693B (en) * | 2021-04-14 | 2022-07-29 | 太原理工大学 | Device and method for extracting gas by drilling complicated stratum through pipe-following protective hole |
| CN113334404B (en) * | 2021-06-03 | 2023-05-23 | 广东工业大学 | Karst cave detection robot |
| CN116446798B (en) * | 2023-06-14 | 2023-09-01 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) | Drilling equipment |
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| CN101956525A (en) * | 2010-09-08 | 2011-01-26 | 吉林大学 | Down-the-hole hammer reverse concentric casing drilling tool |
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| CN102926663A (en) | 2013-02-13 |
| CN203097720U (en) | 2013-07-31 |
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