Impact shearing composite type geological exploration drilling tool

Abstract

The utility model discloses an impacting and shearing composite geological exploration drilling tool which comprises a T-shaped drilling tool body, the head of the T-shaped drilling tool body is of a multi-step cone structure, a head frustum is arranged in the center of the head of the T-shaped drilling tool body, conical-tip-shaped positioning alloy teeth are arranged at the right center of the front end of the head frustum, auxiliary positioning teeth are distributed on the circumferential face of the head frustum, and the auxiliary positioning teeth are matched with the positioning alloy teeth. A shearing platform is arranged behind the head frustum, shearing alloy sheet teeth are respectively distributed on the shearing platform, convex wings which are arranged at intervals are uniformly distributed on the outer circumferential surface behind the shearing platform, vertically arranged alloy blades are respectively embedded on the convex wings, and a slag discharge ditch is formed between the two convex wings. According to the utility model, a crushing mode combining impact type crushing and shearing type crushing is adopted, accurate positioning and stepped grading footage can be realized, deviation and displacement of the drill bit in the drilling process can be prevented, and the problems that the column tooth alloy of a column tooth-shaped alloy drill bit used in the existing geological exploration process is easy to fall off, the energy consumption is large due to no impact shearing, and the service life of the drill bit is short are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of geological exploration drilling tools, in particular to an impact shearing composite geological exploration drilling tool. Background Art

[0002] In geological exploration operations, the quality of drilling tools determines the regularity of the drilled holes and the authenticity of the geological samples collected by the drilling tools. The geological exploration drilling part is mainly composed of the propulsion and punching parts. The front end of the punching part is provided with a drill bit. The drill bit is made of sheet alloy and the drill body by electric welding, or by cold pressing the column tooth alloy and the drill body through interference fit. There are also sheet alloys or column tooth alloys and the drill body welded with ordinary brass solder.

[0003] Under high-power impacts from a drilling rig, drill bits made of flaky alloys can prematurely blunt or break due to excessive shear forces due to the limited number of stress points on the alloys, leading to premature failure. For example, patent publication number CN 221920831 U discloses a wear-resistant down-the-hole drill bit. This wear-resistant down-the-hole drill bit comprises a drill body and several alloy teeth, each of which is mounted on the top of the drill body. The top of the drill body has mounting holes for the alloy teeth to be inserted into.

[0004] In actual use, the column-tooth alloy drill bits used in geological exploration have the following problems: first, the drill bit deviates and shifts during drilling, resulting in irregular holes; second, the slag removal effect is poor during drilling, and the tail is prone to pile-up; in addition, the drill teeth are subjected to excessive force, the column tooth alloy is easy to fall off, the impact without shearing energy consumption is large, the drill bit service life is short, and cannot meet the use requirements. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects and shortcomings of the prior art, provide an impact shearing composite geological exploration drill tool, and solve various problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A composite impact shearing geological exploration drill tool comprises a T-shaped drill body, the head of the T-shaped drill body is a multi-step conical structure, a head cone is provided at the center of the head, a cone-shaped positioning alloy tooth is provided at the center of the front end of the head cone, auxiliary positioning teeth are distributed on the circumferential surface of the head cone, a shearing platform is provided at the rear of the head cone, shearing alloy sheet teeth are distributed on the shearing platform, and convex wings are evenly distributed at intervals on the outer circumferential surface of the rear of the shearing platform, and vertically arranged alloy blades are inlaid on the convex wings, and a slag discharge groove is formed between the two convex wings.

[0008] The T-shaped drill is specifically provided with a plurality of connecting keys in the direction of the circumferential surface of the tail.

[0009] The tail of the T-shaped drill body is provided with an impact hole, and the top of the impact hole is connected to the main gas channel.

[0010] The T-shaped drill has a slag discharge groove with a first air hole, and the first air hole is connected to the main gas channel through a branch channel.

[0011] The shearing platform includes shearing platform one and shearing platform two. The shearing platform one is transitionally connected to the rear end of the head cone. The shearing platform one is distributed with primary shearing alloy sheet teeth in the circumferential direction. The rear of the shearing platform one is transitionally connected with a middle cone. The circumferential surface of the middle cone is distributed with impact alloy column teeth. The bottom of the middle cone is transitionally connected with shearing platform two. The shearing platform two is distributed with secondary shearing alloy sheet teeth in the circumferential direction.

[0012] The auxiliary positioning teeth, impact alloy column teeth and alloy blades are arranged in corresponding positions in the circumferential direction, and the first-level shearing alloy sheet teeth and second-level shearing alloy sheet teeth are arranged in corresponding positions in the circumferential direction, and are staggered in position with the auxiliary positioning teeth, impact alloy column teeth and alloy blades.

[0013] The auxiliary positioning teeth and impact alloy column teeth have the same structure, both are columnar cone structures, the first-level shearing alloy sheet teeth and the second-level shearing alloy sheet teeth and the alloy blades have the same structure, both are strip-shaped, and their front ends are conical. After being heated in a high-frequency induction furnace, the alloy is embedded in the holes and T-shaped drilled specific holes and grooves.

[0014] The shearing platform 1 is also provided with air holes 2, which are connected to the main gas channel via a branch channel.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) The utility model sets a positioning alloy tooth at the top center of the drill bit, which effectively solves the problems of drill bit deviation and irregular hole during drilling, reduces the friction resistance of the alloy base when opening the iron mouth, and can quickly advance, easily discharge slag, rotate in a balanced manner, cut evenly, and open holes regularly;

[0017] (2) Several convex wings are evenly distributed on the edge of the head of the T-shaped drill. Blade alloy is vertically embedded on the convex wings. A slag discharge groove is provided between the two convex wings. A hole that penetrates the pore is provided on the surface of the slag discharge groove, which improves the drilling speed, enhances the slag discharge effect, and extends the service life of the drill tool.

[0018] (3) The shearing alloy flake teeth and impact alloy column teeth are designed to form a crushing method that combines impact and shearing crushing, which can accurately locate and step-by-step graded footage, prevent the drill bit from running off and shifting during drilling, and decompose the impact force and crushing task to each column tooth alloy and flake alloy, thereby improving the utilization rate of the alloy on the drill tool and the service life of the drill bit;

[0019] (4) Several connecting keys are provided on the circumferential surface of the tail of the T-shaped drill to disperse the rotational torque to each spline, effectively reducing the damage to the spline and improving the service life.

[0020] (5) An impact hole is designed on the end face of the drill bit. When drilling, the impactor impacts in the impact hole on the end face, which effectively prevents the pile-up phenomenon at the end face of the T-shaped drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0022] Figure 2 yes Figure 1 A top view of the utility model;

[0023] Figure 3 yes Figure 1 A cross-sectional view of the present invention.

[0024] Reference numerals:

[0025] 1. T-drill bit; 2. Connecting key; 3. Impact hole; 4. Air hole 1; 5. Positioning alloy tooth; 6. Auxiliary positioning tooth; 7. Primary shearing alloy plate tooth; 8. Impact alloy column tooth; 9. Secondary shearing alloy plate tooth; 10. Convex wing; 11. Alloy blade; 12. Slag discharge groove; 13. Head cone; 14. Main gas channel; 15. Air hole 2; 16. Shearing platform 1; 17. Shearing platform 2; 18. Middle cone. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See attached Figure 1-3 ;

[0028] An impact shear composite geological exploration drill tool, including a T-shaped drill body 1, the head of the T-shaped drill body 1 is a multi-step cone structure, a head cone 13 is provided in the center of the head, a cone-shaped positioning alloy tooth 5 is provided at the center of the front end of the head cone 13, and a positioning alloy is provided at the top center of the drill body, which effectively solves the problems of drill bit deviation and irregular hole during drilling, reduces the friction resistance of the alloy base when opening the iron mouth, can quickly advance, easily discharge slag, rotate balanced, cut evenly, and open holes regularly; auxiliary positioning teeth 6 are distributed on the circumferential surface of the head cone 13, and a shearing platform is provided at the rear of the head cone 13, which includes a shearing Cutting platform 16 and shearing platform 2 17, shearing platform 16 is transitionally connected to the rear end of the head cone 13, and the shearing platform 16 is distributed with primary shearing alloy sheet teeth 7 in the circumferential direction, and the rear of the shearing platform 16 is transitionally connected with the middle cone 18, and the circumferential surface of the middle cone 18 is distributed with impact alloy column teeth 8, and the bottom of the middle cone 18 is transitionally connected with shearing platform 2 17, and the shearing platform 2 17 is distributed with secondary shearing alloy sheet teeth 9 in the circumferential direction; the outer circumferential surface of the rear of the shearing platform 2 17 is evenly distributed with spaced convex wings 10, and the convex wings 10 are respectively inlaid with vertically arranged alloy blades 11, and a slag discharge groove 12 is formed between the two convex wings 10.

[0029] Furthermore, a plurality of connecting keys 2 are provided on the circumferential surface of the tail of the T-shaped drill body 1. Through the structure of multiple connecting keys, the rotational torque can be dispersed to each spline during connection, which improves the connection and transmission effect, and multi-directional force is applied, effectively reducing spline damage and increasing service life.

[0030] Furthermore, the tail of the T-shaped drill body 1 is provided with an impact hole 3, and the top of the impact hole 3 is connected to the main gas channel 14. Through the structure of the rear-end impact hole, the impactor can impact in the end face impact hole during drilling, effectively preventing the pile-up phenomenon at the tail of the T-shaped drill body. The slag discharge groove of the T-shaped drill body 1 is provided with an air hole 14, and the air hole 14 is connected to the main gas channel 14 through a branch channel. The slag discharge groove plane is provided with an air hole 1 that passes through the main gas channel, which increases the drilling speed and enhances the slag discharge effect. The slag discharge effect of the front end of the drill bit can be effectively improved through the air hole 2. The combination of the two ensures the smoothness of the drilling process, improves the drilling efficiency and extends the service life of the drill tool. The shearing platform 16 is also distributed with air holes 2 15, and the air holes 2 15 are connected to the main gas channel 14 through a branch channel.

[0031] Furthermore, the auxiliary positioning teeth 6, the impact alloy column teeth 8, and the alloy blades 11 are arranged in corresponding positions in the circumferential direction, and the first-level shearing alloy flake teeth 7 and the second-level shearing alloy flake teeth 9 are arranged in corresponding positions in the circumferential direction, and are arranged in an azimuthally staggered manner with the auxiliary positioning teeth 6, the impact alloy column teeth 8, and the alloy blades 11. The shearing alloy flake teeth and the impact alloy column teeth are designed in combination to form a crushing method that combines impact and shear crushing, which can accurately locate and step-by-step graded footage, prevent the drill bit from running off track and shifting during drilling, and decompose the impact force and crushing tasks to each column tooth alloy and sheet alloy, thereby improving the utilization rate of the alloy on the drill tool and the service life of the drill bit. The auxiliary positioning teeth 6 and the impact alloy column teeth 8 have the same structure, both of which are columnar cone structures, and the first-level shearing alloy flake teeth 7 and the second-level shearing alloy flake teeth 9 and the alloy blades 11 have the same structure, both of which are strip-shaped, and are all heated in a high-frequency induction furnace before the alloy is embedded in the specific holes and grooves of the holes and T-shaped drills. The teeth at adjacent steps are staggered, so that the drilling process is subjected to segmented shear force and impact force in the circumferential direction, which can facilitate the drilling operation more efficiently.

[0032] In summary, the above structure solves the problems of the existing column-toothed alloy drill bits used in geological exploration, such as easy falling off of the column teeth alloy, high impact energy consumption without shearing, and short service life of the drill bits.

[0033] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0034] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent modifications made according to the scope of the claims of the present application are within the scope of protection of the claims of the present application.

Claims

1. An impact shear composite geological exploration drill tool, comprising a T-shaped drill body (1), characterized in that: The head of the T-shaped drill bit (1) is a multi-step cone structure, and a head cone (13) is provided at the center of the head. A cone-shaped positioning alloy tooth (5) is provided at the center of the front end of the head cone (13). Auxiliary positioning teeth (6) are distributed on the circumferential surface of the head cone (13). A shearing platform is provided at the rear of the head cone (13), and shearing alloy sheet teeth are distributed on the shearing platform. The outer circumferential surface of the rear of the shearing platform is uniformly distributed with spaced convex wings (10), and the convex wings (10) are respectively inlaid with vertically arranged alloy blades (11), and a slag discharge groove (12) is formed between the two convex wings (10).

2. The impact shear composite geological exploration drilling tool according to claim 1, characterized in that: A plurality of connecting keys (2) are provided on the circumferential surface of the tail of the T-shaped drill body (1).

3. The impact shear composite geological exploration drilling tool according to claim 1, characterized in that: The tail of the T-shaped drill body (1) is provided with an impact hole (3), and the top of the impact hole (3) is connected to a main gas channel (14).

4. The impact shear composite geological exploration drilling tool according to claim 3, characterized in that: An air hole (4) is provided in the slag discharge groove of the T-shaped drill body (1), and the air hole (4) is connected to the main gas channel (14) through a branch channel.

5. The impact shear composite geological exploration drilling tool according to claim 1, characterized in that: The shearing platform includes a shearing platform 1 (16) and a shearing platform 2 (17). The shearing platform 1 (16) is transitionally connected to the rear end of the head cone (13). The shearing platform 1 (16) is provided with primary shearing alloy plate teeth (7) in the circumferential direction. The rear of the shearing platform 1 (16) is transitionally connected to a middle cone (18). Impact alloy column teeth (8) are distributed on the circumferential surface of the middle cone (18). The bottom of the middle cone (18) is transitionally connected to the shearing platform 2 (17). The shearing platform 2 (17) is provided with secondary shearing alloy plate teeth (9) in the circumferential direction.

6. The impact shear composite geological exploration drilling tool according to claim 5, characterized in that: The auxiliary positioning teeth (6), the impact alloy column teeth (8), and the alloy blade (11) are arranged at positions corresponding to each other in the circumferential direction, and the primary shearing alloy sheet teeth (7) and the secondary shearing alloy sheet teeth (9) are arranged at positions corresponding to each other in the circumferential direction, and are arranged in an azimuthally staggered manner with respect to the auxiliary positioning teeth (6), the impact alloy column teeth (8), and the alloy blade (11).

7. The impact shear composite geological exploration drilling tool according to claim 6, characterized in that: The auxiliary positioning teeth (6) and the impact alloy column teeth (8) have the same structure, both are columnar cone structures, the first-level shearing alloy sheet teeth (7) and the second-level shearing alloy sheet teeth (9) and the alloy blade (11) have the same structure, both are strip-shaped, and are heated in a high-frequency induction furnace before the alloy is embedded in the holes and T-shaped drill holes and grooves.

8. The impact shear composite geological exploration drilling tool according to claim 5, characterized in that: The shearing platform 1 (16) is also provided with pore 2 (15), and the pore 2 (15) is connected to the main gas channel (14) through a branch channel.

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