CN103883256B - A kind of drilling bit of multiple rollers - Google Patents
A kind of drilling bit of multiple rollers Download PDFInfo
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- CN103883256B CN103883256B CN201410157599.XA CN201410157599A CN103883256B CN 103883256 B CN103883256 B CN 103883256B CN 201410157599 A CN201410157599 A CN 201410157599A CN 103883256 B CN103883256 B CN 103883256B
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- mounting plate
- circular mounting
- gear wheel
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- bit
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Abstract
The invention provides a kind of drilling bit of multiple rollers, belong to field of mechanical technique.It solve the technical problems such as the drilling efficiency of drilling bit of multiple rollers in prior art is low.This drill bit comprises drill body, one end of drill body has a circular mounting plate, circular mounting plate rotates and is provided with at least one gear wheel on the region of its center line, it is characterized in that, circular mounting plate is provided with at least two gear wheels away from the region of its center line is rotated, and each is away from the gear wheel in circular mounting plate centre line zone and the distance between this circular mounting plate center line is completely unequal or part is unequal.The present invention can improve the drilling efficiency of drilling bit of multiple rollers effectively.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of drilling bit of multiple rollers.
Background technology
Rock bit uses a kind of drill bit widely, and it has impact when rotated, crushes and the effect of shearing-crushing formation rock, so, rock bit can adapt to soft, in, hard various stratum.After particularly jet nozzled rock bit and long nozzle rock bit occur, the bit speed of rock bit improves greatly, is a major reform in rock bit development history.Rock bit can be divided into mill teeth rock bit, insert bit by tooth type; Single-cone rotary drill bit, tricone bit and assembling drilling bit of multiple rollers can be divided into by gear wheel number.
China patent CN1304720C discloses a kind of high strength antiwear drilling bit of multiple rollers, include two or more bit leg and gear wheel, each bit leg top is linked into one, form bit body, each bit leg bottom is cantilevered axle, gear wheel is set in cantilevered axle, gear wheel is installed on cutting teeth, its difference is that described gear wheel is added in gear wheel by a tip and front tack gear wheel is formed, the tip that gear wheel is strengthened in tip has larger axis and radial dimension, and gear wheel front end is close to center line of bit, the axial dimension that remaining front tack gear wheel tip tool is less and before gear wheel away from center line of bit.
In embody rule process, a lot of constructor is in order to increase the diameter of boring, multiple reaming gear wheel can be set up on drill body, for how multiple rock bit being assembled on drill body, applicant is through multiple job site and the investigation of selling the shop front, the arrangement of each reaming gear wheel equalization is fixed on the external surface of main bit body, those skilled in the art think and as above design, make each reaming gear wheel apart from main bit body center line between distance equal, the drilling efficiency of rock bit can be improved.But applicant finds in concrete practice process, the drilling bit of multiple rollers sending out upper design there will be more dead angle when holing, these can not caused resistance to the drill body in boring by the dead angle that gear wheel cutting teeth is cut to, affect the extension of drill body along ground depth direction, thus affect the drilling efficiency of drill bit.
Summary of the invention
The present invention be directed to the problems referred to above that existing technology exists, provide a kind of drilling bit of multiple rollers, technical problem to be solved by this invention is: the drilling efficiency how improving this drilling bit of multiple rollers.
Object of the present invention realizes by following technical proposal:
A kind of drilling bit of multiple rollers, described drill bit comprises drill body, one end of described drill body has a circular mounting plate, described circular mounting plate rotates and is provided with at least one gear wheel on the region of its center line, it is characterized in that, described circular mounting plate is provided with at least two gear wheels away from the region of its center line is rotated, and each is away from the gear wheel in circular mounting plate centre line zone and the distance between this circular mounting plate center line is completely unequal or part is unequal.
Its operating principle is as follows: in use, the other end of drill body can be connected with a drive source thus drive drill body to rotate, this drive source adopts the realizations such as motor to this drilling bit of multiple rollers usually; And drill body rotates, gear wheel can be driven to revolve round the sun around the axis direction of drill body, meanwhile, be arranged on bit leg because gear wheel rotates, therefore, when contacting at the bottom of gear wheel and the sidewall in hole with hole, the effect due to frictional force can make gear wheel axially rotation occur around self respectively; Gear wheel is again respectively around the axis rotation of self while bit-body axis revolution, and both hole in cooperation, and drilling efficiency is higher; In addition, each is away from the gear wheel in circular mounting plate centre line zone and the distance between this circular mounting plate center line is completely unequal or part is unequal, then when drill body rotates a circle, if each away from the gear wheel in circular mounting plate centre line zone and the distance between circular mounting plate center line completely unequal, then now there will be multiple waney annular cutting zone; And if if each away from the gear wheel in circular mounting plate centre line zone and the distance part between circular mounting plate center line unequal, then still can form multiple waney annular cutting zone, all can reduce the dead angle that this drill bit produces when holing, avoid dead angle area to the extension generation resistance of drill body along ground depth direction, thus improve the drilling efficiency of this drill bit.Difference is, if if each away from the gear wheel in circular mounting plate centre line zone and the distance between circular mounting plate center line completely unequal, then each gear wheel is then fully utilized, the dead angle produced when can reduce drill body boring as much as possible while reducing cost of production.
In above-mentioned a kind of drilling bit of multiple rollers, described drill bit also comprises the bit leg corresponding with described gear wheel, and the inner of described bit leg is fixed on the plate face of described circular mounting plate, and outer end and the gear wheel of described bit leg are rotationally connected.Gear wheel is rotated by bit leg and is arranged on circular mounting plate, and bit leg can be considered a part for circular mounting plate herein, is that gear wheel rotates a kind of mode be arranged on circular mounting plate, rotates to be arranged on circular mounting plate to there is no repugnance with the gear wheel recorded before.
In above-mentioned a kind of drilling bit of multiple rollers, the lateral wall of described gear wheel is fixed with cutting teeth, in described gear wheel, offers central blind hole; The outer end of described bit leg is provided with cantilevered axle, and described cantilevered axle is inserted in described central blind hole and both are rotatably assorted.After being designed with central blind hole and cantilevered axle, gear wheel is made around cantilevered axle axial rotation, thus to drive cutting teeth to cut sandstone; And concrete being rotatably assorted, can, with reference to rock bit of the prior art, adopt the modes such as ball all can realize, not in this to go forth.
In above-mentioned a kind of drilling bit of multiple rollers, the distance between the described gear wheel near circular mounting plate center line and circular mounting plate is greater than the distance between the described gear wheel away from circular mounting plate center line and circular mounting plate.As above design, when holing, the gear wheel near circular mounting plate center line can play the effect centering and balance, and drill bit entirety can more stably be rotated, and improves borehole accuracy.
In above-mentioned a kind of drilling bit of multiple rollers, on described circular mounting plate, eccentric setting has Grouting Pipe, and the distance between the center line of described Grouting Pipe and the center line of circular mounting plate equals the distance between one of them gear wheel away from circular mounting plate center line and center line of circular mounting plate.After being designed with Grouting Pipe, when drill bit is holed, inject mud by injected hole, the sandstone got off by bit cutting is taken out of by mud; And the distance between the center line of the center line of Grouting Pipe and circular mounting plate equals the distance between one of them gear wheel away from circular mounting plate center line and center line of circular mounting plate, then can ensure that the position at Grouting Pipe place has corresponding gear wheel to be mated and cuts, avoid occurring dead angle in the position of Grouting Pipe and affecting drilling efficiency, also can ensure stability and the fluency of pulp to a certain extent.
In above-mentioned a kind of drilling bit of multiple rollers, the sidewall of described circular mounting plate offers at least one slurry outlet groove, the opening of described slurry outlet groove is along the radially outward setting of described circular mounting plate, and two plate faces of described circular mounting plate are run through at the two ends of described slurry outlet groove respectively.After being designed with slurry outlet groove, after Grouting Pipe injects mud in hole, mud can drive sandstone to pass slurry outlet groove and finally flow to earth's surface, is taken out of smoothly by the sandstone in hole.
In above-mentioned a kind of drilling bit of multiple rollers, described drill bit also comprises deep floor, the side of described deep floor is connected mutually with the plate face of circular mounting plate, the opposite side of described deep floor with and be connected mutually away from the bit leg that the gear wheel of circular mounting plate center line is corresponding.After being designed with deep floor, the connective stability between bit leg and circular mounting plate can be improved, thus improve the application life of this drill bit entirety.
In above-mentioned a kind of drilling bit of multiple rollers, described drill bit also comprises dropping-proof bracket, described dropping-proof bracket comprises junction plate and limiting plate, the outer end of described junction plate is fixed on the plate face of described circular mounting plate, the inner of described junction plate and the inner of described limiting plate are connected as a single entity, and the outer end of described limiting plate has one in semiorbicular clamping part; The described gear wheel lateral wall away from circular mounting plate center line axially offers annular groove along self, and described clamping part to be embedded in annular groove and both matched in clearance.Due to drill bit after a longer time of use, owing to being subject to larger resistance away from the gear wheel of circular mounting plate center line, the cantilevered axle on bit leg is easily made bending to occur until fracture, as therefore dropped in hole away from the gear wheel of circular mounting plate center line, then in time gear wheel must be taken out, otherwise not only can affect further boring, and easily cause the wearing and tearing of drill bit, and because hole is comparatively dark and light is poor, therefore usually need the instruments such as magnetite to pick, operation very bothers; And after being designed with dropping-proof bracket in the application, even if cantilevered axle ruptures, clamping part is still embedded in the cone annular groove away from circular mounting plate center line, thus avoids gear wheel to fall in hole, is pulled down by the gear wheel in inner loop shape cutting group after hole to be drilled again.
In above-mentioned a kind of drilling bit of multiple rollers, described circular mounting plate rotates and is provided with three gear wheels and these three gear wheels are uniformly distributed along the circumference of circular mounting plate on the region of its center line.
Compared with prior art, the present invention has the following advantages:
1, when drill body rotates a circle, if each away from the gear wheel in circular mounting plate centre line zone and the distance between circular mounting plate center line completely unequal, then now there will be multiple waney annular cutting zone; And if if each away from the gear wheel in circular mounting plate centre line zone and the distance part between circular mounting plate center line unequal, then still can form multiple waney annular cutting zone, all can reduce the dead angle that this drill bit produces when holing, avoid dead angle area to the extension generation resistance of drill body along ground depth direction, thus improve the drilling efficiency of this drill bit;
2, after being designed with slurry outlet groove, after Grouting Pipe injects mud in hole, mud can drive sandstone to pass slurry outlet groove and finally flow to earth's surface, is taken out of smoothly by the sandstone in hole;
3, after being designed with dropping-proof bracket in the application, even if cantilevered axle ruptures, clamping part is still embedded in the annular groove of gear wheel, thus avoids gear wheel to fall in hole, is pulled down by gear wheel after hole to be drilled again.
Accompanying drawing explanation
Fig. 1 is the axonometric drawing of this drilling bit of multiple rollers in embodiment.
Fig. 2 is the front view of this drilling bit of multiple rollers in embodiment.
Fig. 3 is the structural representation of this dropping-proof bracket in embodiment.
In figure, 1, drill body; 2, circular mounting plate; 3, bit leg; 4, gear wheel; 5, Grouting Pipe; 6, slurry outlet groove; 7, deep floor; 8, cutting teeth; 9, junction plate; 10, limiting plate; 101, clamping part; 11, annular groove.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figure 1, Figure 2, Figure 3 shows, this drill bit comprises drill body 1, one end of drill body 1 has a circular mounting plate 2, circular mounting plate 2 rotates and is provided with at least one gear wheel 4 on the region of its center line, circular mounting plate 2 is provided with at least two gear wheels 4 away from the region of its center line is rotated, and each is away from the gear wheel 4 in circular mounting plate 2 centre line zone and the distance between this circular mounting plate 2 center line is completely unequal or part is unequal.As preferably, circular mounting plate 2 rotates and is provided with three gear wheels 4 and these three gear wheels 4 are uniformly distributed along the circumference of circular mounting plate 2 on the region of its center line, in the present embodiment, each away from the gear wheel 4 in circular mounting plate 2 centre line zone and the distance between this circular mounting plate 2 center line completely unequal.
As shown in Figure 2 and Figure 3, drill bit also comprises the bit leg 3 corresponding with gear wheel 4, and the inner of bit leg 3 is fixed on the plate face of circular mounting plate 2, and outer end and the gear wheel 4 of bit leg 3 are rotationally connected.Specifically, the lateral wall of gear wheel 4 is fixed with cutting teeth 8, in gear wheel 4, offers central blind hole; The outer end of bit leg 3 is provided with cantilevered axle, and cantilevered axle is inserted in central blind hole and both are rotatably assorted.
As preferably, be greater than away from the distance between the gear wheel 4 of circular mounting plate 2 center line and circular mounting plate 2 near the distance between the gear wheel 4 and circular mounting plate 2 of circular mounting plate 2 center line.Have angle away from shape between the center line of the gear wheel 4 of circular mounting plate 2 center line and circular mounting plate, the angle number of degrees formed between the gear wheel center line that distance circular mounting plate center line is far away and circular mounting plate are then larger.This design equally also can improve the drilling efficiency of this drill bit.
As shown in Figure 2 and Figure 3, on circular mounting plate 2, eccentric setting has Grouting Pipe 5, and the distance between the center line of Grouting Pipe 5 and the center line of circular mounting plate 2 equals the distance between one of them gear wheel 4 away from circular mounting plate 2 center line and center line of circular mounting plate 2.The sidewall of circular mounting plate 2 offers at least one slurry outlet groove 6, the opening of slurry outlet groove 6 is along the radially outward setting of circular mounting plate 2, and two plate faces of circular mounting plate 2 are run through at the two ends of slurry outlet groove 6 respectively.
As shown in Figure 1, Figure 3, drill bit also comprises deep floor 7, and the side of deep floor 7 is connected mutually with the plate face of circular mounting plate 2, the opposite side of deep floor 7 with and be connected mutually away from the bit leg 3 that the gear wheel 4 of circular mounting plate 2 center line is corresponding.
As shown in Figure 3, drill bit also comprises dropping-proof bracket, and dropping-proof bracket comprises junction plate 9 and limiting plate 10, and the outer end of junction plate 9 is fixed on the plate face of circular mounting plate 2, the inner of junction plate 9 and the inner of limiting plate 10 are connected as a single entity, and the outer end of limiting plate 10 has one in semiorbicular clamping part 101; Gear wheel 4 lateral wall away from circular mounting plate 2 center line axially offers annular groove 11 along self, and clamping part 101 to be embedded in annular groove 11 and both matched in clearance.
Operating principle of the present invention is as follows: in use, the other end of drill body can be connected with a drive source thus drive drill body to rotate, this drive source adopts the realizations such as motor to this drilling bit of multiple rollers usually; And drill body rotates, gear wheel can be driven to revolve round the sun around the axis direction of drill body, meanwhile, be arranged on bit leg because gear wheel rotates, therefore, when contacting at the bottom of gear wheel and the sidewall in hole with hole, the effect due to frictional force can make gear wheel axially rotation occur around self respectively; Gear wheel around bit-body axis revolution while again respectively around the axis rotation of self, both hole in cooperation, drilling efficiency is higher, and respectively form the different annular cutting zone of diameter away from the gear wheel in circular mounting plate centre line zone, each gear wheel can be made to be fully used, while raising drilling efficiency, to reduce cost of production.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (9)
1. a drilling bit of multiple rollers, described drill bit comprises drill body (1), one end of described drill body (1) has a circular mounting plate (2), described circular mounting plate (2) is rotated and is provided with at least one gear wheel (4) on the region of its center line, it is characterized in that, described circular mounting plate (2) is provided with at least two gear wheels (4) away from the region of its center line is rotated, each is positioned at away from the gear wheel (4) in circular mounting plate (2) centre line zone and the distance between this circular mounting plate (2) center line is completely unequal or part is unequal.
2. drilling bit of multiple rollers according to claim 1, it is characterized in that, described drill bit also comprises the bit leg (3) corresponding with described gear wheel (4), the inner of described bit leg (3) is fixed on the plate face of described circular mounting plate (2), and outer end and the gear wheel (4) of described bit leg (3) are rotationally connected.
3. drilling bit of multiple rollers according to claim 2, is characterized in that, the lateral wall of described gear wheel (4) is fixed with cutting teeth (8), and described gear wheel offers central blind hole in (4); The outer end of described bit leg (3) is provided with cantilevered axle, and described cantilevered axle is inserted in described central blind hole and both are rotatably assorted.
4. the drilling bit of multiple rollers according to claim 1 or 2 or 3, it is characterized in that, the distance between the described gear wheel (4) near circular mounting plate (2) center line and circular mounting plate (2) is greater than the distance between the described gear wheel (4) away from circular mounting plate (2) center line and circular mounting plate (2).
5. the drilling bit of multiple rollers according to claim 1 or 2 or 3, it is characterized in that, the upper eccentric setting of described circular mounting plate (2) has Grouting Pipe (5), and the distance between the center line of described Grouting Pipe (5) and the center line of circular mounting plate (2) equals the distance between one of them gear wheel (4) away from circular mounting plate (2) center line and center line of circular mounting plate (2).
6. the drilling bit of multiple rollers according to claim 1 or 2 or 3, it is characterized in that, the sidewall of described circular mounting plate (2) offers at least one slurry outlet groove (6), the opening of described slurry outlet groove (6) is along the radially outward setting of described circular mounting plate (2), and two plate faces of described circular mounting plate (2) are run through at the two ends of described slurry outlet groove (6) respectively.
7. drilling bit of multiple rollers according to claim 2, it is characterized in that, described drill bit also comprises deep floor (7), the side of described deep floor (7) is connected mutually with the plate face of circular mounting plate (2), the opposite side of described deep floor (7) with and be connected mutually away from the bit leg (3) that the gear wheel (4) of circular mounting plate (2) center line is corresponding.
8. drilling bit of multiple rollers according to claim 2, it is characterized in that, described drill bit also comprises dropping-proof bracket, described dropping-proof bracket comprises junction plate (9) and limiting plate (10), the outer end of described junction plate (9) is fixed on the plate face of described circular mounting plate (2), the inner of described junction plate (9) and the inner of described limiting plate (10) are connected as a single entity, and the outer end of described limiting plate (10) has one in semiorbicular clamping part (101); Described gear wheel (4) lateral wall away from circular mounting plate (2) center line axially offers annular groove (11) along self, and described clamping part (101) to be embedded in annular groove (11) and both matched in clearance.
9. the drilling bit of multiple rollers according to claim 1 or 2 or 3, it is characterized in that, described circular mounting plate (2) is rotated and is provided with three gear wheels (4) and these three gear wheels (4) are uniformly distributed along the circumference of circular mounting plate (2) on the region of its center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410157599.XA CN103883256B (en) | 2014-04-16 | 2014-04-16 | A kind of drilling bit of multiple rollers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410157599.XA CN103883256B (en) | 2014-04-16 | 2014-04-16 | A kind of drilling bit of multiple rollers |
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| Publication Number | Publication Date |
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| CN103883256A CN103883256A (en) | 2014-06-25 |
| CN103883256B true CN103883256B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410157599.XA Active CN103883256B (en) | 2014-04-16 | 2014-04-16 | A kind of drilling bit of multiple rollers |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134085A (en) * | 2015-08-20 | 2015-12-09 | 郑州神利达钻采设备有限公司 | Rotating drill bit with multiple drill sub-bits |
| CN110331938B (en) * | 2019-04-29 | 2020-12-01 | 江苏和信石油机械有限公司 | Roller bit drill rod |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6401839B1 (en) * | 1998-08-31 | 2002-06-11 | Halliburton Energy Services, Inc. | Roller cone bits, methods, and systems with anti-tracking variation in tooth orientation |
| CN201810214U (en) * | 2010-10-18 | 2011-04-27 | 天津立林钻头有限公司 | Soft formation side tooth gauge protection reamer |
| CN203129959U (en) * | 2013-03-22 | 2013-08-14 | 四川圆通建设有限公司 | Fast reamer for trenchless construction |
| CN203248081U (en) * | 2013-02-28 | 2013-10-23 | 西南石油大学 | Wide insert cone bit |
| CN203783466U (en) * | 2014-04-16 | 2014-08-20 | 国强建设集团有限公司 | Multi-cone drill bit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7343990B2 (en) * | 2006-06-08 | 2008-03-18 | Baker Hughes Incorporated | Rotary rock bit with hardfacing to reduce cone erosion |
-
2014
- 2014-04-16 CN CN201410157599.XA patent/CN103883256B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6401839B1 (en) * | 1998-08-31 | 2002-06-11 | Halliburton Energy Services, Inc. | Roller cone bits, methods, and systems with anti-tracking variation in tooth orientation |
| CN201810214U (en) * | 2010-10-18 | 2011-04-27 | 天津立林钻头有限公司 | Soft formation side tooth gauge protection reamer |
| CN203248081U (en) * | 2013-02-28 | 2013-10-23 | 西南石油大学 | Wide insert cone bit |
| CN203129959U (en) * | 2013-03-22 | 2013-08-14 | 四川圆通建设有限公司 | Fast reamer for trenchless construction |
| CN203783466U (en) * | 2014-04-16 | 2014-08-20 | 国强建设集团有限公司 | Multi-cone drill bit |
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| CN103883256A (en) | 2014-06-25 |
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