CN102943626A - Impact rotary-cut drill bit and rock-entering drilling machine using same - Google Patents
Impact rotary-cut drill bit and rock-entering drilling machine using same Download PDFInfo
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- CN102943626A CN102943626A CN2012105189735A CN201210518973A CN102943626A CN 102943626 A CN102943626 A CN 102943626A CN 2012105189735 A CN2012105189735 A CN 2012105189735A CN 201210518973 A CN201210518973 A CN 201210518973A CN 102943626 A CN102943626 A CN 102943626A
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Abstract
The invention relates to an impact rotary-cut drill bit and a rock-entering drilling machine using the same. The impact rotary-cut drill bit comprises a tire body with a rotary-cut drill wing, wherein the force face surface of the rotary-cut drill wing is provided with rotary-cut drill teeth which are hinged to the rotary-cut drill wing through a drill tooth rotating shaft in a vertical-overturning manner; the axle of the drill tooth rotating shaft extends along the radial direction of the drill bit; and the rotary-cut drill wing is provided with upper and lower limit structures for limiting the vertical overturning extremity of the rotary-cut drill teeth respectively, so that the rotary-cut drill teeth operate in a rotary-cut manner. By the impact rotary-cut drill bit, the problem that the rotary-cut drill teeth of the conventional drill bit are frequently damaged as a result of directly bearing the reverse impact force of rocks when the drill bit impacts the rocks is solved.
Description
Technical field
The present invention relates to the piling machinery field, relate in particular to the rock entering drilling machine that impacts the rotary-cut drill bit and use this drill bit.
Background technology
For the drill bit that can make rig pierces in the rock smoothly, often need to enter smoothly rock to what the impact energy that drill bit applies certain frequency could realize drill bit, this rig that digs rock that can bore is called rock entering drilling machine.Disclosed " the stake worker unit head of a kind of hydraulic vibration impactor and formation thereof; stake worker power is as the part of rock entering drilling machine; it comprises for direct or indirect concrete perfusion; the water that reverse circulation creeps into or the inner tube of mud; the peripheral coaxial sleeve of inner tube is equipped with protection cylinder (being drilling rod); the periphery of protection cylinder is provided with the helical blade for deslagging of concrete structure such as the Chinese patent CN202227979U of existing rock entering drilling machine; the lower end of protection cylinder is connected with drill bit; stake worker unit head also comprises to the actuating unit of protection cylinder and drill bit output driving torque; be provided with on inner pipe the impactor that applies the vibratory impulse energy to drill bit; drill bit comprises that having rotary-cut bores the wing and the broken carcass that bores the wing; the bottom of carcass is fixedly installed the Churn drill tooth; the power of the meeting face that the wing is bored in rotary-cut is installed with rotary-cut brill tooth; the power of the meeting face that bores the wing refers to bore the wing first and the front end of rock power transmission in the direction of rotation of drill bit; the Churn drill tooth is mainly used in the impact energy of rig is acted on the rock so that the rock quick washing is broken; rotary-cut is bored tooth and is mainly used in the rotary-cut of rig can be acted on the rock, creeps into to realize rotary-cut.
The drill bit of rock entering drilling machine is most important to operating efficiency and the working effect of rock entering drilling machine, the problem that the drill bit of existing rock entering drilling machine exists is: when work, drill bit rotary drilling on one side, up and down rock is carried out impact grinding on one side, and the rotary-cut brill tooth that is fixedly installed on the carcass also can move up and down along with moving up and down of drill bit, so just cause rotary-cut to bore tooth when bearing the rotary-cut reaction force of rock, also bearing the vibration reaction force of rock on above-below direction, very short rotary-cut often can occur and bore the situation that tooth is thrust the application life that tooth is bored in rotary-cut; Another side, bore tooth for fear of rotary-cut and bear excessive vibration reaction force, the height that tooth is bored in general rotary-cut all will be higher than the height of Churn drill tooth, can play like this Churn drill tooth impacts first, the impact reactive force that tooth bears is bored in the suitable rotary-cut that reduces, and rotary-cut brill tooth is often being born the critical function to deslagging at the bottom of the hole, because it is higher that the position of tooth is bored in rotary-cut, causing rotary-cut to bore tooth can't thoroughly remove the boring mud at the bottom of the hole clean, this can seriously influence the later stage concrete pile, because boring mud do not remove totally, and an empty slag blanket at the bottom of can producing, concrete pile can cause reducing of bearing capacity of pile tip owing to empty slag blanket at the bottom of the hole, and settling amount is excessive.
Summary of the invention
The object of the present invention is to provide a kind of impact rotary-cut drill bit, bore tooth when the drill bit impact rock to solve rotary-cut in the existing drill bit, because of the frequent problem of damage of the reverse impact power of directly bearing rock; The present invention also aims to provide a kind of rock entering drilling machine that uses this impact rotary-cut drill bit.
The technical scheme of impacting the rotary-cut drill bit among the present invention is:
Impact the rotary-cut drill bit, comprise and have the carcass that the wing is bored in rotary-cut, be provided with rotary-cut on the power of the meeting face of the described rotary-cut brill wing and bore tooth, described rotary-cut is bored tooth and is bored on the wing by the described rotary-cut that is articulated in that the rotating shaft of brill tooth can spin upside down, the axis of described brill tooth rotating shaft is along the radially extension of described drill bit, and described rotary-cut is bored the upper and lower upset limit that is respectively arranged with on the wing described rotary-cut brill tooth and carried out spacing so that the upper and lower limit bit architecture that the tooth spiral cut is done is bored in described rotary-cut.
The Churn drill tooth of described drill bit is arranged on the bottom face of described carcass, and described rotary-cut is bored tooth when spacing by described lower limit structure, and the lower surface of described rotary-cut brill tooth is not higher than the lower surface of described Churn drill tooth.
The wing is bored in described rotary-cut two cylindricals that are symmetricly set in described carcass, also is provided with two broken wings that bore on the described carcass, and the wing is bored in described two rotary-cuts and the cylindrical that the wing is distributed in described carcass is bored in two fragmentations.
Described Churn drill tooth has a plurality of, and the arrangement form of each Churn drill tooth consists of the rotation direction whirlpool shape consistent with the rotation direction of drill bit.
Described rotary-cut is bored on the power of the meeting face of tooth and is provided with for the deslagging gradient of discharging from the bottom to top boring mud, and the upper groove of the described deslagging gradient is used for corresponding with the feeder connection of adjacent two formed slagging channels of helical blade on the corresponding drilling rod.
The technical scheme of rock entering drilling machine is among the present invention:
Rock entering drilling machine, comprise drilling rod and be in transmission connection in the drill bit of drilling rod lower end, described drill bit comprises having the carcass that the wing is bored in rotary-cut, be provided with rotary-cut on the power of the meeting face of the described rotary-cut brill wing and bore tooth, described rotary-cut is bored tooth and is bored on the wing by the described rotary-cut that is articulated in that the rotating shaft of brill tooth can spin upside down, the axis of described brill tooth rotating shaft is along the radially extension of described drill bit, and described rotary-cut is bored the upper and lower upset limit that is respectively arranged with on the wing described rotary-cut brill tooth and carried out spacing so that the upper and lower limit bit architecture that the tooth spiral cut is done is bored in described rotary-cut.
The Churn drill tooth of described drill bit is arranged on the bottom face of described carcass, and described rotary-cut is bored tooth when spacing by described lower limit structure, and the lower surface of described rotary-cut brill tooth is not higher than the lower surface of described Churn drill tooth.
The wing is bored in described rotary-cut two cylindricals that are symmetricly set in described carcass, also is provided with two broken wings that bore on the described carcass, and the wing is bored in described two rotary-cuts and the cylindrical that the wing is distributed in described carcass is bored in two fragmentations.
Described Churn drill tooth has a plurality of, and the arrangement form of each Churn drill tooth consists of the rotation direction whirlpool shape consistent with the rotation direction of drill bit.
Be formed for slagging channel that corresponding boring mud is discharged from the bottom to top between adjacent two helical blades of described drilling rod periphery, be provided with for the deslagging gradient of discharging from the bottom to top boring mud on the power of the meeting face of described rotary-cut brill tooth, the upper groove of the described deslagging gradient is corresponding with the feeder connection of described slagging channel.
In order to address the above problem, beneficial effect of the present invention is: rotary-cut is bored tooth and is bored on the wing by the rotary-cut that is articulated in that the rotating shaft of brill tooth can spin upside down, when drill bit impacts rock downwards, rotary-cut bore tooth be subjected to rock reaction force and on turn over, and subsequently rock is carried out rotary-cut and creep into, rock bores tooth to rotary-cut reverse impact active force is stirred work to cushioning on the rotary-cut brill tooth, the reverse rotary-cut power that tooth only bears rock is bored in rotary-cut, and the reverse impact power of not bearing rock has guaranteed the application life that tooth is bored in rotary-cut.
Further, because boring tooth, rotary-cut can abovely turn over the reverse impact active force that buffering is fallen rock, so the height that can allow rotary-cut bore tooth is not higher than the height of Churn drill tooth, rotary-cut is bored tooth when the rotary-cut construction of carrying out rock, the direct rock boring mud of the bottom at the bottom of the hole of contact, rotary-cut is bored tooth and the boring mud of the bottom at the bottom of the hole can be cleaned out fully, forms empty slag blanket at the bottom of can not making the hole, bearing capacity of pile tip is guaranteed, and the concrete pile that the later stage makes can not sink because of empty slag blanket.
Description of drawings
Fig. 1 is the structural representation of the drill bit among the embodiment of rock entering drilling machine among the present invention, also is simultaneously the structural representation that impacts an embodiment of rotary-cut drill bit among the present invention;
Fig. 2 be among Fig. 1 B-B to sectional view;
Fig. 3 is that the A-A of Fig. 2 is to sectional view;
Fig. 4 is the upward view of Fig. 1.
The specific embodiment
The embodiment of rock entering drilling machine is shown in Fig. 1 ~ 4: comprise drilling rod, be in transmission connection in the drill bit of drilling rod lower end and for the impactor to drill bit output impact energy, the periphery of drilling rod is provided with helical blade, is formed for the slagging channel that corresponding boring mud is discharged from the bottom to top between helical blade.Drill bit comprises having four carcasses 4 that bore the wing, four are bored the wing and are respectively two rotary-cuts brill wing 4-1 and two broken wings that bore, four are bored the cylindrical that the wing is distributed in carcass 4, wherein be provided with rotary-cut on the power of the meeting face of two rotary-cut brill wings and bore tooth 3, rotary-cut is bored tooth 3 and is bored on the wing 4-1 along the corresponding rotary-cut that is articulated in that the brill tooth rotating shaft 7 of radially extending of drill bit can spin upside down by axis, its concrete mounting structure is, bore the wing in corresponding rotary-cut and be provided with concavo-convex staggered concaveconvex structure 6, the convex-concave structure that is provided with on the tooth 3 with concaveconvex structure 6 adaptive grafting is bored in rotary-cut, bores the tooth rotating shaft and is threaded onto on concaveconvex structure 6 and the convex-concave structure.The upper and lower side that the wing is bored in each rotary-cut is respectively arranged with upper limit structure 9 and lower limit structure 10, the upper and lower limit bit architecture is gear along structure, rotary-cut is bored on the tooth 3 and is provided with corresponding with the upper and lower limit bit architecture respectively upper auxiliary section 3-2 and lower auxiliary section, upper limit structure 9 cooperates with upper auxiliary section 3-2 block and stops rotary-cut to bore tooth 3 to turn on continuing, thereby prevents that rotary-cut from boring tooth 3 and can not carry out the rotary-cut construction owing to turning in the transition; Lower limit structure 10 cooperates with lower auxiliary section block and stops rotary-cut to bore tooth to turn under continuing, thereby prevent that rotary-cut brill tooth from can not carry out the rotary-cut construction owing to turning under the transition, the upper and lower limit bit architecture guarantees that rotary-cut bores tooth not excessively upset and the lower limit position of turning over when 1 expression lower limit structure cooperates with lower auxiliary section block in the normal rotary-cut work sheet, 2 represent that upper limit structures cooperate with upper auxiliary section block on turn over limit position.The bottom of carcass 4 is provided with a plurality of Churn drill teeth 8, the arrangement form of each Churn drill tooth 8 consists of the rotation direction whirlpool shape consistent with the rotation direction of drill bit, when rotary-cut brill tooth 3 is in lower upset limit position 1, the lower surface that tooth is bored in rotary-cut flushes setting with the lower surface of Churn drill tooth 8, Churn drill tooth and rotary-cut are bored tooth and all can be changed, can bore so the independent replacing of tooth, thereby reduce use cost.Be provided with the deslagging gradient 3-1 that discharges from the bottom to top for corresponding boring mud on the power of the meeting face of rotary-cut brill tooth 3, the upper groove of the deslagging gradient is corresponding with the feeder connection of slagging channel.The center of carcass arranges the centre bore 5 that passes for the inner tube of corresponding concrete perfusion, when concrete perfusion, can promote drill bit, and meanwhile by inner tube to boring in concrete perfusion; Also be provided with the deslagging gradient for auxiliary deslagging on the power of the meeting face of the broken brill wing.
During work, drill bit turns clockwise on one side, withstand shocks on one side device impact force and rock is impacted, Churn drill tooth 8 is mainly used in rock is carried out impact grinding, the broken wing that bores has increased the impact grinding effect of drill bit to rock, and the whirlpool shape of Churn drill tooth 8 is arranged, and can effectively reduce the reverse rotary-cut power of the suffered rock of Churn drill tooth, be beneficial to simultaneously boring mud and discharged to cylindrical by inner circle by boring the tooth fluid line, guarantee the application life of Churn drill tooth; Rotary-cut is bored tooth 3 and is used for to rock rotary-cut and creeps into, when the drill bit impact rock, rotary-cut bore tooth 3 by on turn over rock bores tooth 3 to rotary-cut the reverse impact power that cushions, tooth is bored in rotary-cut can directly not be subject to impact on the rock above-below direction, so that tooth is bored in rotary-cut is not fragile; When lower upset limit position, the lower surface that tooth is bored in rotary-cut flushes setting with the lower surface of Churn drill tooth, rotary-cut is bored tooth and can be removed the boring mud of the bottom at the bottom of the hole, the boring mud of the bottom bores the deslagging gradient on the tooth upper surface through rotary-cut and enters smoothly in the slagging channel between helical blade at the bottom of the hole, the eliminating of hole subdrilling slag rapidly and thoroughly, empty slag blanket can not appear, bearing capacity of pile tip behind the pile is guaranteed, concrete pile afterwards can not sink because of the need slag blanket, concrete construction quality is good, accident can not occur.
In other embodiment of this rock entering drilling machine: the centre bore that is arranged at the carcass center can not have yet, and can adopt this moment to promote behind the drill bit the again form of construction work of concrete perfusion; Boring the wing also can have two, three, five or other number, can certainly on each brill wing rotary-cut brill tooth be set all; When lower upset limit position, the lower surface of rotary-cut brill tooth also can be lower than the lower surface of Churn drill tooth; The arrangement form of Churn drill tooth can also be other arbitrary shape; The setting position of upper and lower limit bit architecture also can be selected as required, only needs to play the spacing effect of the tooth upset limit is bored in rotary-cut to get final product.
Impact the embodiment of rotary-cut drill bit shown in Fig. 1 ~ 4: the concrete structure that impacts the rotary-cut drill bit is identical with the drill bit described in above-mentioned each rock entering drilling machine embodiment, is not described in detail in this.
Claims (10)
1. impact the rotary-cut drill bit, comprise and have the carcass that the wing is bored in rotary-cut, be provided with rotary-cut on the power of the meeting face of the described rotary-cut brill wing and bore tooth, it is characterized in that: described rotary-cut is bored tooth and is bored on the wing by the described rotary-cut that is articulated in that the rotating shaft of brill tooth can spin upside down, the axis of described brill tooth rotating shaft is along the radially extension of described drill bit, and described rotary-cut is bored the upper and lower upset limit that is respectively arranged with on the wing described rotary-cut brill tooth and carried out spacing so that the upper and lower limit bit architecture that the tooth spiral cut is done is bored in described rotary-cut.
2. impact rotary-cut drill bit according to claim 1, it is characterized in that: the Churn drill tooth of described drill bit is arranged on the bottom face of described carcass, described rotary-cut is bored tooth when spacing by described lower limit structure, and the lower surface of described rotary-cut brill tooth is not higher than the lower surface of described Churn drill tooth.
3. impact rotary-cut drill bit according to claim 1, it is characterized in that: the wing is bored in described rotary-cut two cylindricals that are symmetricly set in described carcass, also be provided with two broken wings that bore on the described carcass, the wing is bored in described two rotary-cuts and the cylindrical that the wing is distributed in described carcass is bored in two fragmentations.
4. impact rotary-cut drill bit according to claim 2, it is characterized in that: described Churn drill tooth has a plurality of, and the arrangement form of each Churn drill tooth consists of the rotation direction whirlpool shape consistent with the rotation direction of drill bit.
5. the described impact rotary-cut of any one drill bit according to claim 1 ~ 4, it is characterized in that: described rotary-cut is bored on the power of the meeting face of tooth and is provided with for the deslagging gradient of discharging from the bottom to top boring mud, and the upper groove of the described deslagging gradient is used for corresponding with the feeder connection of the formed slagging channel of helical blade on the corresponding drilling rod.
6. rock entering drilling machine, comprise drilling rod and be in transmission connection in the drill bit of drilling rod lower end, described drill bit comprises having the carcass that the wing is bored in rotary-cut, be provided with rotary-cut on the power of the meeting face of the described rotary-cut brill wing and bore tooth, it is characterized in that: described rotary-cut is bored tooth and is bored on the wing by the described rotary-cut that is articulated in that the rotating shaft of brill tooth can spin upside down, the axis of described brill tooth rotating shaft is along the radially extension of described drill bit, and described rotary-cut is bored the upper and lower upset limit that is respectively arranged with on the wing described rotary-cut brill tooth and carried out spacing so that the upper and lower limit bit architecture that the tooth spiral cut is done is bored in described rotary-cut.
7. rock entering drilling machine according to claim 6, it is characterized in that: the Churn drill tooth of described drill bit is arranged on the bottom face of described carcass, described rotary-cut is bored tooth when spacing by described lower limit structure, and the lower surface of described rotary-cut brill tooth is not higher than the lower surface of described Churn drill tooth.
8. rock entering drilling machine according to claim 6, it is characterized in that: the wing is bored in described rotary-cut two cylindricals that are symmetricly set in described carcass, also be provided with two broken wings that bore on the described carcass, the wing is bored in described two rotary-cuts and the cylindrical that the wing is distributed in described carcass is bored in two fragmentations.
9. rock entering drilling machine according to claim 7, it is characterized in that: described Churn drill tooth has a plurality of, and the arrangement form of each Churn drill tooth consists of the rotation direction whirlpool shape consistent with the rotation direction of drill bit.
10. the described rock entering drilling machine of any one according to claim 6 ~ 9, it is characterized in that: the helical blade of described drilling rod periphery is formed for slagging channel that corresponding boring mud is discharged from the bottom to top, be provided with for the deslagging gradient of discharging from the bottom to top boring mud on the power of the meeting face of described rotary-cut brill tooth, the upper groove of the described deslagging gradient is corresponding with the feeder connection of described slagging channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210518973.5A CN102943626B (en) | 2012-12-06 | 2012-12-06 | Impact rotary-cut drill bit and rock-entering drilling machine using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210518973.5A CN102943626B (en) | 2012-12-06 | 2012-12-06 | Impact rotary-cut drill bit and rock-entering drilling machine using same |
Publications (2)
| Publication Number | Publication Date |
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| CN102943626A true CN102943626A (en) | 2013-02-27 |
| CN102943626B CN102943626B (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210518973.5A Active CN102943626B (en) | 2012-12-06 | 2012-12-06 | Impact rotary-cut drill bit and rock-entering drilling machine using same |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002250194A (en) * | 2001-02-23 | 2002-09-06 | Koken Boring Mach Co Ltd | Retractable bit |
| EP0972908B1 (en) * | 1998-07-14 | 2005-01-12 | Camco International (UK) Limited | A method of determining characteristics of a rotary drag-type drill bit |
| CN1795319A (en) * | 2003-05-26 | 2006-06-28 | 国际壳牌研究有限公司 | Drill bit, system, and method for drilling a borehole in an earth formation |
| CN1806087A (en) * | 2003-06-12 | 2006-07-19 | 国际壳牌研究有限公司 | Percussive drill bit |
| US7461706B2 (en) * | 2001-06-05 | 2008-12-09 | Andergauge Limited | Drilling apparatus with percussive action cutter |
| CN201301667Y (en) * | 2008-11-25 | 2009-09-02 | 上海金泰工程机械有限公司 | Drill bit with integration of shock, rotation and dry slag removal |
| CN102678053A (en) * | 2012-05-18 | 2012-09-19 | 西南石油大学 | Crossed scraping-impacting composite drill bit |
| CN202926217U (en) * | 2012-12-06 | 2013-05-08 | 邵金安 | Impact rotary cutting drill bit and rock cracking drilling machine using same |
-
2012
- 2012-12-06 CN CN201210518973.5A patent/CN102943626B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0972908B1 (en) * | 1998-07-14 | 2005-01-12 | Camco International (UK) Limited | A method of determining characteristics of a rotary drag-type drill bit |
| JP2002250194A (en) * | 2001-02-23 | 2002-09-06 | Koken Boring Mach Co Ltd | Retractable bit |
| US7461706B2 (en) * | 2001-06-05 | 2008-12-09 | Andergauge Limited | Drilling apparatus with percussive action cutter |
| CN1795319A (en) * | 2003-05-26 | 2006-06-28 | 国际壳牌研究有限公司 | Drill bit, system, and method for drilling a borehole in an earth formation |
| CN1806087A (en) * | 2003-06-12 | 2006-07-19 | 国际壳牌研究有限公司 | Percussive drill bit |
| CN201301667Y (en) * | 2008-11-25 | 2009-09-02 | 上海金泰工程机械有限公司 | Drill bit with integration of shock, rotation and dry slag removal |
| CN102678053A (en) * | 2012-05-18 | 2012-09-19 | 西南石油大学 | Crossed scraping-impacting composite drill bit |
| CN202926217U (en) * | 2012-12-06 | 2013-05-08 | 邵金安 | Impact rotary cutting drill bit and rock cracking drilling machine using same |
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| CN102943626B (en) | 2015-01-07 |
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