CN217813308U

CN217813308U - Opposed roller bit

Info

Publication number: CN217813308U
Application number: CN202221956406.3U
Authority: CN
Inventors: 冯训程
Original assignee: Hengyang Jinzuan Rotary Drill Technology Development Co ltd
Current assignee: Hengyang Jinzuan Rotary Drill Technology Development Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-11-15
Anticipated expiration: 2032-07-27

Abstract

The opposite type roller composite drill bit is characterized by comprising a drill bit, wherein the drill bit comprises a bit leg, a roller and a cutting column, two opposite roller wheels are arranged on the lower end face of the bit leg around the center of the end face, two opposite cutting columns are arranged on the lower end face of the bit leg between the two roller wheels around the center of the end face, the protruding height of each cutting column is higher than the highest point of the roller wheel, the roller wheels and the cutting columns are symmetrically arranged on the lower end face of the bit leg in a cross mode, the drill bit is good in stability and high in drilling speed, cutting impact and grinding slag discharge of the drill bit are respectively completed by the cutting columns and the roller wheels, most of the whole axial pressure is borne by the cutting columns, the load of a connecting rotating shaft of the roller wheels is reduced, the service life of the rotating shaft of the roller wheels is prolonged, an embedded structure with the hard wear-resistant blocks being replaceable is adopted, the wear-resistant blocks are calculated through pre-testing, the hard wear-resistant blocks are replaced within a fixed time, the whole drill bit does not need to be replaced, the drilling efficiency is improved, the drilling cost is reduced, and the drill bit has popularization and application value.

Description

Opposed roller bit

Technical Field

The utility model relates to a drilling rig technical field especially relates to a compound drill bit of opposed formula gear wheel.

Background

At present, in the technical field of drilling machines, a drill bit of a common roller drill adopts a structure that convex teeth on a roller cone are mutually twisted, the roller cone on the drill bit drills and grinds at the same time, a roller cone connecting shaft has large load, wear-resistant convex teeth need to bear double pressure of drilling and rock breaking, the wear speed is high, the service life of the drill bit is short, the drilling efficiency is low, and the drilling cost is improved.

Disclosure of Invention

The utility model provides a carry out drilling impact and broken grinding with the drill bit respectively, reduce the load of core movable part, the load of grinding portion is little, and the wearing and tearing speed is slower relatively, can effectual promotion drill bit life, improves drilling efficiency, reduces the opposed roller bit of drilling cost.

In order to realize the purpose, the utility model adopts the following technical scheme:

the oppositely-arranged cone composite drill bit is characterized by comprising a drill bit, wherein the drill bit comprises a cone leg, a cone and a cutting column, the cone leg is cylindrical, a drill rod connecting end with external threads is arranged at the upper end of the cone leg, two opposite cones are arranged on the lower end face of the cone leg around the center of the end face and are rotatably connected to the cone leg, two opposite cutting columns are arranged on the lower end face of the cone leg between the two cones around the center of the end face, the cutting columns and the cone leg are integrally formed, and the protruding height of each cutting column is higher than the highest point of the cone.

The further scheme is as follows: the novel hard wear-resistant block drilling tool is characterized in that a plurality of embedded grooves are uniformly distributed in the top of the cutting column, and the protruding hard wear-resistant blocks are fixedly embedded in the embedded grooves.

The further scheme is as follows: the outer facade of the bit leg is also uniformly fixedly embedded with a plurality of protruding hard wear-resistant materials, so that the direct contact area between the bit leg body and the hole wall is further reduced, the friction force directly borne by the bit leg is reduced, the load of the drill bit is reduced, and the service life of the drill bit is prolonged.

The beneficial effects of the utility model are that: utilize gear wheel and cutting post at the cross symmetrical arrangement of bit leg lower extreme surface, bit stability is good, drilling speed is fast, the cutting impact and the grinding row sediment of drill bit are accomplished by cutting post and gear wheel respectively, most whole axle load is born by the cutting post, the connection pivot load of gear wheel has been reduced, the life of gear wheel pivot is improved, and adopt the replaceable mosaic structure of the wear-resisting piece of stereoplasm, through testing the wear-resisting life who calculates the wear-resisting piece of stereoplasm in advance, the wear-resisting piece of stereoplasm can be changed to the fixed time, need not to change the drill bit wholly, improve drilling efficiency, reduce drilling cost, and the drill bit has popularization and application value.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a top view of fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

Referring to the figure, the opposed roller cone composite drill bit comprises a drill bit, wherein the drill bit comprises a cone leg 1, a roller cone 2 and a cutting column 3, the cone leg 1 is cylindrical, a drill rod connecting end with external threads is arranged at the upper end of the cone leg 1, two opposite roller cones 2 are arranged on the lower end face of the cone leg 1 around the center of the end face, the roller cones 2 are rotatably connected to the cone leg 1, two opposite cutting columns 3 are arranged on the lower end face of the cone leg 1 between the two roller cones 2 around the center of the end face, the cutting columns 3 and the cone leg 1 are integrally formed, and the protruding height of the cutting columns 3 is higher than the highest point of the roller cones 2.

The top of the cutting column 3 is uniformly provided with a plurality of embedded grooves, the embedded grooves are internally and fixedly embedded with convex hard wear-resistant blocks 4, when the hard wear-resistant blocks 4 are worn out and unavailable, the drill bit can continue to drill as long as the root parts of the hard wear-resistant blocks are lifted out of the embedded grooves and new hard wear-resistant blocks are replaced, the whole drill bit does not need to be replaced, the drilling efficiency is improved, and the cost is saved.

The outer facade of the bit leg 1 is also uniformly fixedly embedded with a plurality of protruding hard wear-resistant materials, so that the direct contact area between the bit leg body and the hole wall is further reduced, the friction force directly borne by the bit leg is reduced, the load of the drill bit is reduced, and the service life of the drill bit is prolonged.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The oppositely-arranged cone composite drill bit is characterized by comprising a drill bit, wherein the drill bit comprises a cone leg, a cone and a cutting column, the cone leg is cylindrical, a drill rod connecting end with external threads is arranged at the upper end of the cone leg, two opposite cones are arranged on the lower end face of the cone leg around the center of the end face and are rotatably connected to the cone leg, two opposite cutting columns are arranged on the lower end face of the cone leg between the two cones around the center of the end face, the cutting columns and the cone leg are integrally formed, and the protruding height of each cutting column is higher than the highest point of the cone.

2. The opposed-cone composite drill bit according to claim 1, wherein a plurality of embedded grooves are uniformly distributed on the top of the cutting column, and convex hard wear-resistant blocks are fixedly embedded in the embedded grooves.

3. The opposed-cone composite drill bit according to claim 1 or 2, wherein a plurality of hard wear-resistant materials are uniformly embedded in the outer vertical surface of the bit leg.