CN102943626B - 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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- CN102943626B CN102943626B CN201210518973.5A CN201210518973A CN102943626B CN 102943626 B CN102943626 B CN 102943626B CN 201210518973 A CN201210518973 A CN 201210518973A CN 102943626 B CN102943626 B CN 102943626B
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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 piling machinery field, particularly relate to the rock entering drilling machine impacting rotary-cut drill bit and use this drill bit.
Background technology
In order to the drill bit of rig can be made to pierce smoothly in rock, what often need to apply that the impact energy of certain frequency could realize drill bit to drill bit enters rock smoothly, and this rig digging rock that can bore is called rock entering drilling machine.Concrete structure " stake work unit head of a kind of hydraulic vibration impactor and formation thereof disclosed in Chinese patent CN202227979U of existing rock entering drilling machine, stake work power is as a part for rock entering drilling machine, it comprises for direct or indirect concrete perfusion, the interior pipe of the water that reverse circulation creeps into or mud, the peripheral coaxial sleeve of interior pipe is equipped with protection cylinder (i.e. drilling rod), the periphery of protection cylinder is provided with the helical blade for deslagging, the lower end of protection cylinder is connected with drill bit, stake work unit head also comprises the actuating unit exporting driving torque to protection cylinder and drill bit, be provided with the impactor applying vibratory impulse energy to drill bit on inner pipe, drill bit comprises the carcass with the rotary-cut brill wing and the broken brill wing, the bottom of carcass is fixedly installed Churn drill tooth, power of the meeting face that the wing is bored in rotary-cut is installed with rotary-cut brill tooth, power of the meeting face of boring the wing refers to the front end of boring wing elder generation and rock power transmission in the direction of rotation of drill bit, Churn drill tooth is mainly used in the impact energy of rig to act on rock so that rock quick washing is broken, rotary-cut is bored tooth and is mainly used in the rotary-cut of rig can act on rock, creep into realize rotary-cut.
The drill bit of rock entering drilling machine to the operating efficiency of rock entering drilling machine and working effect most important, the drill bit Problems existing of existing rock entering drilling machine is: operationally, drill bit rotary drilling on one side, up and down impact grinding is carried out to rock on one side, and the rotary-cut brill tooth be fixedly installed on carcass also can move up and down along with moving up and down of drill bit, rotary-cut is so just caused to bore tooth while bearing the rotary-cut reaction force of rock, also subject rock vibration reaction force in the vertical direction, very short in application life of tooth is bored in rotary-cut, often there will be the situation that rotary-cut brill tooth is thrust, another side, bore tooth in order to avoid rotary-cut and bear excessive vibration reaction force, the height of general rotary-cut brill tooth is all higher than the height of Churn drill tooth, Churn drill tooth can be played so first impact, the impact reactive force that tooth bears is bored in suitable reduction rotary-cut, and rotary-cut brill tooth often carries the critical function to deslagging at the bottom of hole, the position of boring tooth due to rotary-cut is higher, causing rotary-cut to bore tooth cannot thoroughly remove clean by the boring mud at the bottom of hole, this can be serious affect later stage concrete pile, because boring mud is not removed totally, an empty slag blanket at the bottom of producing, concrete pile can cause the reduction of bearing capacity of pile tip due to slag blanket empty at the bottom of hole, settling amount is excessive.
Summary of the invention
The object of the present invention is to provide and a kind of impact rotary-cut drill bit, bore tooth when drill bit impact rock with the rotary-cut solved in existing drill bit, the problem often damaged because directly bearing the reverse impact power of rock; The present invention also aims to provide a kind of rock entering drilling machine using this impact rotary-cut drill bit.
The technical scheme of impacting rotary-cut drill bit in the present invention is:
Impact rotary-cut drill bit, comprise and there is the carcass that the wing is bored in rotary-cut, power of the meeting face of the described rotary-cut brill wing is provided with rotary-cut and bores tooth, the described rotary-cut that is articulated with that described rotary-cut brill tooth can be spun upside down by the rotating shaft of brill tooth is bored on the wing, the axis of described brill tooth rotating shaft extends along the radial direction of described drill bit, and described rotary-cut is bored the upper and lower upset limit wing is respectively arranged with to tooth is bored in described rotary-cut and carried out the spacing upper and lower limit bit architecture done to make described rotary-cut bore tooth spiral cut.
The Churn drill tooth of described drill bit is arranged on the bottom face of described carcass, and described rotary-cut bores tooth when spacing by described lower limit structure, and described rotary-cut bores the lower surface of tooth not higher than the lower surface of described Churn drill tooth.
The wing is bored in described rotary-cut two cylindricals being symmetricly set in described carcass, described carcass is also provided with two broken brill wings, and the wings are bored in two described rotary-cuts and the cylindrical that the wing is distributed in described carcass is bored in two fragmentations.
Described Churn drill tooth has multiple, and the arrangement form of each Churn drill tooth forms the rotation direction swirling consistent with the rotation direction of drill bit.
Power of the meeting face of described rotary-cut brill tooth is provided with the deslagging gradient for discharging boring mud from the bottom to top, the upper groove of the described deslagging gradient is for corresponding with the feeder connection of the slagging channel that adjacent two helical blades on corresponding drilling rod are formed.
In the present invention, the technical scheme of rock entering drilling machine is:
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 the carcass with the rotary-cut brill wing, power of the meeting face of the described rotary-cut brill wing is provided with rotary-cut and bores tooth, the described rotary-cut that is articulated with that described rotary-cut brill tooth can be spun upside down by the rotating shaft of brill tooth is bored on the wing, the axis of described brill tooth rotating shaft extends along the radial direction of described drill bit, and described rotary-cut is bored the upper and lower upset limit wing is respectively arranged with to tooth is bored in described rotary-cut and carried out the spacing upper and lower limit bit architecture done to make described rotary-cut bore tooth spiral cut.
The Churn drill tooth of described drill bit is arranged on the bottom face of described carcass, and described rotary-cut bores tooth when spacing by described lower limit structure, and described rotary-cut bores the lower surface of tooth not higher than the lower surface of described Churn drill tooth.
The wing is bored in described rotary-cut two cylindricals being symmetricly set in described carcass, described carcass is also provided with two broken brill wings, and the wings are bored in two described rotary-cuts and the cylindrical that the wing is distributed in described carcass is bored in two fragmentations.
Described Churn drill tooth has multiple, and the arrangement form of each Churn drill tooth forms the rotation direction swirling consistent with the rotation direction of drill bit.
The slagging channel being used for corresponding boring mud to discharge from the bottom to top is formed between adjacent two helical blades of described drilling rod periphery, power of the meeting face of described rotary-cut brill tooth is provided with the deslagging gradient for discharging boring mud from the bottom to top, the upper groove of the described deslagging gradient is corresponding with the feeder connection of described slagging channel.
In order to solve the problem, beneficial effect of the present invention is: the rotary-cut that is articulated with that rotary-cut brill tooth can be spun upside down by the rotating shaft of brill tooth is bored on the wing, when drill bit impacts rock downwards, rotary-cut bore tooth by rock reaction force and on turn over, and subsequently rotary-cut is carried out to rock and creep into, rock bores tooth reverse impact active force to rotary-cut is stirred work to cushioning by rotary-cut brill tooth, the reverse rotary-cut power that tooth only bears rock is bored in rotary-cut, and do not bear the reverse impact power of rock, ensure that the application life of tooth is bored in rotary-cut.
Further, bore tooth due to rotary-cut and can turn over the reverse impact active force that buffering falls rock above, so rotary-cut can be allowed to bore the height of tooth not higher than the height of Churn drill tooth, rotary-cut bores tooth when carrying out the rotary-cut construction to rock, the rock boring mud of the bottom at the bottom of the hole of direct contact, rotary-cut is bored tooth and the boring mud of the bottom at the bottom of hole can be cleaned out completely, can not make to form empty slag blanket at the bottom of 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.
Accompanying drawing explanation
Fig. 1 is the structural representation of the drill bit in an embodiment of rock entering drilling machine in the present invention, is also the structural representation of an embodiment of impacting rotary-cut drill bit in the present invention simultaneously;
Fig. 2 be in 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.
Detailed description of the invention
The embodiment of rock entering drilling machine is as shown in Fig. 1 ~ 4: comprise drilling rod, be in transmission connection the drill bit in drilling rod lower end and the impactor for exporting impact energy to drill bit, the periphery of drilling rod is provided with helical blade, forms the slagging channel being used for corresponding boring mud to discharge from the bottom to top between helical blade.Drill bit comprises the carcass 4 with four brill wings, four are bored the wing and are respectively the broken brill wing of wing 4-1 and two, two rotary-cuts brills, four are bored the cylindrical that the wing is distributed in carcass 4, power of the meeting face that wherein wings are bored in two rotary-cuts is provided with rotary-cut and bores tooth 3, what rotary-cut bored that tooth 3 can be spun upside down along the brill tooth rotating shaft 7 that the radial direction of drill bit extends by axis is articulated with on corresponding rotary-cut brill wing 4-1, its concrete mounting structure is, bore on the wing in corresponding rotary-cut and be provided with concavo-convex staggered concaveconvex structure 6, rotary-cut is bored on tooth 3 and is provided with the convex-concave structure with the adaptive grafting of concaveconvex structure 6, bore tooth rotating shaft and be threaded onto concaveconvex structure 6 with in 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, upper and lower limit bit architecture is gear along structure, rotary-cut is bored on tooth 3 and is provided with upper auxiliary section 3-2 corresponding with upper and lower limit bit architecture respectively and lower auxiliary section, upper limit structure 9 coordinate with upper auxiliary section 3-2 block and stop rotary-cut bore tooth 3 continue on turn over, thus prevent rotary-cut bore tooth 3 can not carry out rotary-cut construction due to transition being turned over; Lower limit structure 10 coordinates with lower auxiliary section block and stops rotary-cut to be bored under tooth continues turns over, thus prevent rotary-cut brill tooth from can not carry out rotary-cut construction owing to turning under transition, upper and lower limit bit architecture ensure rotary-cut bore tooth unduly overturn and in normal rotary-cut work sheet 1 when representing that lower limit structure coordinates with lower auxiliary section block under turn over limit position, 2 expression upper limit structures coordinate with upper auxiliary section block on turn over limit position.The bottom of carcass 4 is provided with multiple Churn drill tooth 8, the arrangement form of each Churn drill tooth 8 forms the rotation direction swirling 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, the independent replacing of boring tooth can be carried out like this, thus reduce use cost.Power of the meeting face of rotary-cut brill tooth 3 is provided with the deslagging gradient 3-1 discharged from the bottom to top for corresponding boring mud, and the upper groove of the deslagging gradient is corresponding with the feeder connection of slagging channel.The center of carcass arrange for corresponding concrete perfusion interior pipe through centre bore 5, when concrete perfusion, can drill bit be promoted, while by interior pipe to concrete perfusion in boring; Broken power of meeting face of boring the wing is also provided with the deslagging gradient for auxiliary deslagging.
During work, drill bit is while turn clockwise, while withstand shocks device impact force and rock is impacted, Churn drill tooth 8 is mainly used in carrying out impact grinding to rock, the broken wing that bores adds the impact grinding effect of drill bit to rock, and the arrangement of the swirling of Churn drill tooth 8, effectively can reduce the reverse rotary-cut power of the rock suffered by Churn drill tooth, be beneficial to boring mud to be discharged to cylindrical by inner circle by brill tooth fluid line simultaneously, ensure the application life of Churn drill tooth; Rotary-cut brill tooth 3 is for creeping into rock rotary-cut, and when drill bit impact rock, rotary-cut is bored tooth 3 and cushioned rock bores tooth 3 reverse impact power to rotary-cut by above turning over, and rotary-cut brill tooth directly can not be subject to the impact on rock above-below direction, so rotary-cut brill tooth 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 hole, the deslagging gradient that the boring mud of the bottom at the bottom of hole bores on tooth upper surface through rotary-cut enters in the slagging channel between helical blade smoothly, the eliminating of hole subdrilling slag rapidly and thoroughly, there will not be empty slag blanket, bearing capacity of pile tip after pile is guaranteed, concrete pile afterwards can not sink because needing slag blanket, concrete construction quality is good, there will not be accident.
In other embodiment of this rock entering drilling machine: the centre bore being arranged at carcass center can not have yet, now can adopt and promote the concrete form of construction work of Reperfu-sion after drill bit; Bore the wing and also can have two, three, five or other number, each brill wing can certainly all arrange rotary-cut brill tooth; When lower upset limit position, the lower surface of rotary-cut brill tooth also can 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 to bore the spacing effect of the tooth upset limit to rotary-cut.
Impact the embodiment of rotary-cut drill bit as shown in Fig. 1 ~ 4: the concrete structure impacting 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 rotary-cut drill bit, comprise and there is the carcass that the wing is bored in rotary-cut, power of the meeting face of the described rotary-cut brill wing is provided with rotary-cut and bores tooth, it is characterized in that: the described rotary-cut that is articulated with that described rotary-cut brill tooth can be spun upside down by the rotating shaft of brill tooth is bored on the wing, the axis of described brill tooth rotating shaft extends along the radial direction of described drill bit, and described rotary-cut is bored the upper and lower upset limit wing is respectively arranged with to tooth is bored in described rotary-cut and carried out the spacing upper and lower limit bit architecture done to make described rotary-cut bore tooth spiral 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 bores tooth when spacing by described lower limit structure, and described rotary-cut bores the lower surface of tooth 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, be symmetricly set in the cylindrical of described carcass, described carcass be also provided with two broken brill wings, the wings are bored in two described 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, is characterized in that: described Churn drill tooth has multiple, and the arrangement form of each Churn drill tooth forms the rotation direction swirling consistent with the rotation direction of drill bit.
5. the impact rotary-cut drill bit according to claim 1 ~ 4 any one, it is characterized in that: power of the meeting face of described rotary-cut brill tooth is provided with the deslagging gradient for discharging boring mud from the bottom to top, the upper groove of the described deslagging gradient is for corresponding with the feeder connection of the slagging channel that the helical blade on corresponding drilling rod is formed.
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 the carcass with the rotary-cut brill wing, power of the meeting face of the described rotary-cut brill wing is provided with rotary-cut and bores tooth, it is characterized in that: the described rotary-cut that is articulated with that described rotary-cut brill tooth can be spun upside down by the rotating shaft of brill tooth is bored on the wing, the axis of described brill tooth rotating shaft extends along the radial direction of described drill bit, and described rotary-cut is bored the upper and lower upset limit wing is respectively arranged with to tooth is bored in described rotary-cut and carried out the spacing upper and lower limit bit architecture done to make described rotary-cut bore tooth spiral 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 bores tooth when spacing by described lower limit structure, and described rotary-cut bores the lower surface of tooth 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, be symmetricly set in the cylindrical of described carcass, described carcass be also provided with two broken brill wings, the wings are bored in two described 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, is characterized in that: described Churn drill tooth has multiple, and the arrangement form of each Churn drill tooth forms the rotation direction swirling consistent with the rotation direction of drill bit.
10. the rock entering drilling machine according to claim 6 ~ 9 any one, it is characterized in that: the helical blade of described drilling rod periphery forms the slagging channel being used for corresponding boring mud to discharge from the bottom to top, power of the meeting face of described rotary-cut brill tooth is provided with the deslagging gradient for discharging boring mud from the bottom to top, 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 |
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| Publication Number | Publication Date |
|---|---|
| CN102943626A CN102943626A (en) | 2013-02-27 |
| CN102943626B true CN102943626B (en) | 2015-01-07 |
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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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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2339810B (en) * | 1998-07-14 | 2002-05-22 | Camco Internat | 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 |
| DE60226033D1 (en) * | 2001-06-05 | 2008-05-21 | Andergauge Ltd | drilling |
| AR044550A1 (en) * | 2003-05-26 | 2005-09-21 | Shell Int Research | DRILLING HEAD AND SYSTEM AND METHOD TO DRILL A DRILLING WELL IN A LAND FORMATION |
| AR044485A1 (en) * | 2003-06-12 | 2005-09-14 | Shell Int Research | DRILLING MACHINE WITH PERCUSSION, DRILLING SYSTEM THAT INCLUDES SUCH DRILLING MACHINE AND A METHOD FOR DRILLING A WELL |
| 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 |
| CN102678053B (en) * | 2012-05-18 | 2015-08-19 | 西南石油大学 | A kind of intersect scrape cut-impact combined drill |
| 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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| CN102943626A (en) | 2013-02-27 |
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Effective date of registration: 20210409 Address after: 450000 west house, 1st floor, unit 1, East Building, Huiyuan community, Xincheng Road, Tianhe Road, Huiji District, Zhengzhou City, Henan Province Patentee after: Zhengzhou jintaili Engineering Technology Co.,Ltd. Address before: 450000 Building 2, Tianlun manor, Huiji District, Zhengzhou City, Henan Province Patentee before: Shao Jinan |
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