CN217400824U

CN217400824U - Diamond composite tooth gauge protection guide roller bit

Info

Publication number: CN217400824U
Application number: CN202220888254.1U
Authority: CN
Inventors: 沈劲松; 汪学军; 方剑; 胡敏; 陈波; 汪杨志; 何国勇
Original assignee: Hubei Helilai Precision Forging Technology Co ltd; Hubei Minglilai Alloy Drilling Tool Co ltd
Current assignee: Hubei Helilai Precision Forging Technology Co ltd; Hubei Minglilai Alloy Drilling Tool Co ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-09-09
Anticipated expiration: 2032-04-18

Abstract

The utility model discloses a compound tooth of diamond gauge protection direction roller bit comprises bit leg and two gear wheels, two the gear wheel is fixed mounting respectively in the left and right sides at bit leg top, the periphery of bit leg is from last to fixed mounting down has a plurality of palm back gauge protection tooth, the fixed surface of gear wheel installs interior row of tooth, outer row of gauge protection cutting teeth and edging tooth, the utility model relates to a roller bit technical field. This compound tooth of diamond protects footpath direction roller bit, the outer row of protecting footpath cutting tooth that constitutes the gear wheel through staggered arrangement's first compound tooth of diamond and first carbide tooth improves roller bit's wear-resisting effect to improved the situation that current roller bit cutting shaft bottom function is surplus and the wall of a well function is not enough repaiied, and utilize the good wearability of first compound tooth of diamond, strengthen the guarantor ability of drill bit greatly, make the gear wheel cloth tooth more reasonable, when the drill bit life-span extension, guarantee the safety and stability of follow-up drilling rod and pass.

Description

Diamond composite tooth gauge protection guide roller bit

Technical Field

The utility model relates to a roller bit technical field specifically is a diamond composite tooth gauge protection direction roller bit.

Background

The raise boring machine as one important mine equipment and water power station construction equipment is used widely in underground transportation tunnel and well shaft construction with stable geological condition, and has hydraulic motor to obtain rotation torque to drive the drilling tool system to drive the drill rod and the drill bit to rotate, the oil cylinder to apply the drill bit and the cutter head to apply thrust force during drilling and reverse thrust force to the rock during reaming.

The gauge protection teeth of the conventional guide drill bit are hard alloy teeth, and the wear resistance of the alloy teeth is insufficient, so that the guide drill bit has the defect of shrinkage during deep hole drilling, the upper part is large and the lower part is small, a drill rod cannot penetrate when a reverse well drill rod is installed, or the drill rod is abraded and broken when reverse well tunneling is caused due to small holes.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a compound tooth of diamond gauge protection direction roller bit has solved conventional direction bit and has had the shrinkage cavity defect when deep hole drilling, big-end-up, the problem of the drilling rod damaged conditions appears easily when installing the raise boring bar.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a diamond composite tooth protects footpath direction roller bit, comprises bit leg and two gear wheels, two the gear wheel is fixed mounting respectively in the left and right sides at bit leg top, the periphery of bit leg is from last to fixed mounting down has a plurality of palm back of the palm to protect footpath tooth, the fixed surface of gear wheel installs interior row of tooth, outer row of guarantor cutting teeth and deburring tooth, outer row of guarantor cutting teeth includes the first carbide tooth of a plurality of and the first carbide tooth of a plurality of, and the first carbide tooth staggered arrangement of a plurality of and a plurality of, the deburring tooth includes a plurality of second carbide tooth and a plurality of second diamond composite tooth, and a plurality of second carbide tooth and a plurality of second diamond composite tooth staggered arrangement.

Preferably, the palm back gauge protection tooth comprises a plurality of third hard alloy teeth and a plurality of third diamond composite teeth, and the plurality of third hard alloy teeth and the plurality of third diamond composite teeth are arranged in a staggered mode.

Preferably, the first diamond composite tooth, the second diamond composite tooth and the third diamond composite tooth all comprise a hard alloy base and a diamond composite layer arranged on the surface of the hard alloy base, and the hard alloy base and the diamond composite layer are integrated through high temperature and high pressure.

Preferably, the hard alloy base and the diamond composite layer are integrated through high temperature and high pressure.

Preferably, a side grout spraying hole is formed in the middle of the tooth palm, a main grout spraying hole matched with the side grout spraying hole is formed in the periphery of the tooth palm, and a nozzle assembly is arranged inside the main grout spraying hole.

Advantageous effects

The utility model provides a diameter-protecting guide roller bit with diamond composite teeth. Compared with the prior art, the method has the following beneficial effects:

(1) this compound tooth of diamond protects footpath direction roller bit, the outer row of protecting footpath cutting tooth that constitutes the gear wheel through staggered arrangement's first compound tooth of diamond and first carbide tooth improves roller bit's wear-resisting effect to improved the situation that current roller bit cutting shaft bottom function is surplus and the wall of a well function is not enough repaiied, and utilize the good wearability of first compound tooth of diamond, strengthen the guarantor ability of drill bit greatly, make the gear wheel cloth tooth more reasonable, when the drill bit life-span extension, guarantee the safety and stability of follow-up drilling rod and pass.

(2) According to the diamond composite tooth gauge protection guide roller bit, the trimming teeth are formed by the second hard alloy teeth and the second diamond composite teeth which are arranged in a staggered mode, the active well wall cutting function of the roller bit is strengthened, the gauge protection capacity of the roller bit is improved, the trimming teeth can well repair the well wall, the well drilling quality is improved, the passive gauge protection resistance is reduced, and the mechanical drilling speed of the roller bit is improved.

(3) According to the diamond composite tooth gauge protection guide roller bit, the palm back gauge protection teeth are formed by the third hard alloy teeth and the third diamond composite teeth which are arranged in a staggered mode, the diamonds and the hard alloys are effectively utilized for carrying out composite gauge protection, the gauge protection capability is further enhanced under the super-strong wear-resisting property of the diamonds, meanwhile, the palm back centralizing function is strengthened, the tooth palm is effectively protected, the functional state of the bit is further improved, and the bit is enabled to run more stably.

Drawings

Fig. 1 is a schematic external structural view of the present invention;

FIG. 2 is a schematic view of the inner structure of the palm back gauge teeth and the tooth palm of the present invention;

FIG. 3 is a schematic view of the structure of the cone of the present invention;

FIG. 4 is a schematic diagram of the position arrangement of the first diamond compact and the first cemented carbide tooth in the cone structure of the present invention;

fig. 5 is a schematic diagram of the position arrangement of the second cemented carbide teeth and the second diamond composite teeth in the cone structure of the present invention.

In the figure: 1. a bit leg; 2. a cone; 3. palm back gauge protection teeth; 4. an inner row of teeth; 5. externally discharging gauge protection cutting teeth; 6. trimming the teeth; 7. a first diamond composite tooth; 8. a first cemented carbide tooth; 9. a second cemented carbide tooth; 10. a second diamond composite tooth; 11. a third hard alloy tooth; 12. a third diamond composite tooth; 13. side grout spraying holes; 14. a main nozzle hole; 15. a nozzle assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a kind of diamond compound tooth gauge protection guide roller bit, it is made up of bit leg 1 and two roller cones 2, two roller cones 2 are fixedly mounted on left and right sides of the top of bit leg 1 separately, the periphery of bit leg 1 is from the top to the bottom fixedly mounted with several palm back gauge protection teeth 3, concretely, in order to further strengthen the gauge protection ability, and strengthen the palm back righting function, effectively protect the bit leg 1, the palm back gauge protection teeth 3 include several third hard alloy teeth 11 and several third diamond compound teeth 12, and several third hard alloy teeth 11 and several third diamond compound teeth 12 are staggered, further, through the staggered third hard alloy teeth 11 and third diamond compound teeth 12 form palm back gauge protection teeth 3, use diamond and hard alloy to compound gauge, and effective to the super-strong wear resistance of diamond use, and then improve the bit function state, the drill bit can run more stably.

As a preferred scheme, in order to improve the situation that the function of the existing drill bit cutting bottom hole is excessive and the function of scraping the well wall is insufficient and ensure the safe and stable penetration of a subsequent drill rod, the surface of the cone 2 is fixedly provided with an inner row of teeth 4, an outer row of gauge-protecting cutting teeth 5 and trimming teeth 6, specifically, the outer row of gauge-protecting cutting teeth 5 comprise a plurality of first diamond composite teeth 7 and a plurality of first hard alloy teeth 8, and the plurality of first diamond composite teeth 7 and the plurality of first hard alloy teeth 8 are arranged in a staggered manner, as shown in fig. 4.

As a preferable scheme, in order to enhance the active cutting function of the drill bit for the well wall, improve the gauge protection capability of the drill bit, and improve the penetration rate of the drill bit, the deburring teeth 6 include a plurality of second cemented carbide teeth 9 and a plurality of second diamond composite teeth 10, and the plurality of second cemented carbide teeth 9 and the plurality of second diamond composite teeth 10 are arranged in a staggered manner, as shown in fig. 5.

Further, the first diamond composite tooth 7, the second diamond composite tooth 10 and the third diamond composite tooth 12 each include a cemented carbide base and a diamond composite layer disposed on the surface of the cemented carbide base, wherein the cemented carbide base and the diamond composite layer are integrated by high temperature and high pressure.

Specifically, the diamond composite layer comprises diamond micropowder and a hard alloy substrate, and is formed by sintering under the conditions of ultrahigh pressure and high temperature, and is a composite superhard material.

Furthermore, a side grout spraying hole 13 is formed in the middle of the bit leg 1, a main grout spraying hole 14 matched with the side grout spraying hole 13 is formed in the periphery of the bit leg 1, and a nozzle assembly 15 is arranged inside the main grout spraying hole 14.

And those not described in detail in this specification are well within the skill of those in the art.

During the use, the rotation takes place for a plurality of first diamond composite tooth 7 and a plurality of first carbide tooth 8 of cross arrangement, cut and scrape the wall of a well, utilize the superstrong wear resistance of diamond composite bed, the life of extension drill bit, in-process, a plurality of second carbide tooth 9 and a plurality of second diamond composite tooth 10 of cross arrangement rotate, utilize the superstrong wear resistance of diamond composite bed, maintain the wall of a well, reduce passive gauge protection resistance, under a plurality of third carbide tooth 11 and a plurality of third diamond composite tooth 12 of cross arrangement rotate, utilize the superstrong wear resistance of diamond composite bed, protect bit leg 1, further reinforcing gauge protection ability, and make the drill bit smooth operation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a diamond composite tooth diameter-protecting direction roller bit, comprises bit leg (1) and two cone (2), its characterized in that: two gear wheel (2) fixed mounting is respectively in the left and right sides at palm (1) top, the periphery of palm (1) is from last to down fixed mounting has a plurality of palm back of the body gauge protection tooth (3), the fixed surface of gear wheel (2) installs interior row of tooth (4), outer row of gauge protection cutting tooth (5) and deburring tooth (6), outer row of gauge protection cutting tooth (5) includes a plurality of first diamond composite tooth (7) and a plurality of first carbide tooth (8), and a plurality of first diamond composite tooth (7) and a plurality of first carbide tooth (8) staggered arrangement, edging tooth (6) include a plurality of second carbide tooth (9) and a plurality of second diamond composite tooth (10), and a plurality of second carbide tooth (9) and a plurality of second diamond composite tooth (10) staggered arrangement.

2. The diamond composite tooth gauge protection guide cone bit according to claim 1, wherein: the palm back gauge protection tooth (3) comprises a plurality of third hard alloy teeth (11) and a plurality of third diamond composite teeth (12), and the third hard alloy teeth (11) and the third diamond composite teeth (12) are arranged in a staggered mode.

3. The diamond composite tooth gauge protection guide cone bit according to claim 2, wherein: the first diamond composite tooth (7), the second diamond composite tooth (10) and the third diamond composite tooth (12) respectively comprise a hard alloy base and a diamond composite layer arranged on the surface of the hard alloy base.

4. The diamond composite tooth gauge protection guide cone bit according to claim 3, wherein: the hard alloy base and the diamond composite layer are integrated through high temperature and high pressure.

5. The diamond composite tooth gauge protection guide cone bit according to claim 1, wherein: lateral grout spraying holes (13) are formed in the middle of the tooth palm (1), main grout spraying holes (14) matched with the lateral grout spraying holes (13) are formed in the periphery of the tooth palm (1), and a nozzle assembly (15) is arranged inside the main grout spraying holes (14).