Hard alloy tooth with anti-slip strip structure

Abstract

The hard alloy tooth with the anti-slip strip structure comprises an alloy tooth column body and a hemispherical tooth head part, the hemispherical tooth head part and the alloy tooth column body are integrally formed, a plurality of strip-shaped notches which are distributed in an annular mode are formed in the bottom of the outer side wall of the alloy tooth column body, and the strip-shaped notches are formed in the bottom of the outer side wall of the alloy tooth column body. An anti-skid protruding strip is welded to the interior of each strip-shaped notch, an annular reinforcing ring is arranged at the top of the outer wall face of the alloy tooth column body, and the annular reinforcing ring is connected with the top of each anti-skid protruding strip. According to the alloy tooth, the strip-shaped notches which are annularly distributed are formed in the bottom of the outer side wall of the alloy tooth cylinder, the anti-skid convex strips are welded in the strip-shaped notches, and the annular reinforcing rings are arranged to be connected with the tops of the anti-skid convex strips, so that the anti-skid convex strips are not damaged when the alloy tooth and a drill rod body are installed in an embedded mode; the connection between the tail part and the drill rod body has good connection firmness, and the alloy teeth are not easy to loosen, so that an efficient rock drilling effect is realized.

Description

Technical Field

[0001] This utility model belongs to the field of cemented carbide tooth technology, and relates to a cemented carbide tooth with an anti-slip strip structure. Background Technology

[0002] Currently, alloy teeth embedded in drill bits both domestically and internationally consist of a head and a tail. The tail is used to be embedded in the drill bit, while the head is used for rock drilling. According to the shape of the head, they are classified as spherical teeth, conical teeth, spring-shaped teeth, and teeth for roller cone drills, etc.

[0003] The prior art, CN211200536U, discloses a cemented carbide tooth, including a tooth body and a tooth tip disposed at the upper end of the tooth body. Several protruding ridges extending upwards from the lower part of the tooth body are evenly distributed circumferentially on the outer side of the tooth body. This cemented carbide tooth, by providing protruding ridges on the outer side of the tooth body, saves material. When the cemented carbide tooth is installed on the cutting tooth base, the protruding ridges abut against the inner wall of the weld hole in the cutting tooth base, automatically aligning the cemented carbide tooth with the weld hole and ensuring a uniform and controllable weld width, thus improving the brazing strength. Furthermore, by setting the tooth body into a frustum shape with a large upper radius and a small lower radius, it can protect the cutting tooth base at the lower end of the tooth body when used in mining, tunneling, rotary drilling, excavator milling, ditch excavation, and road milling, preventing the cemented carbide tooth from falling off after wear between the cutting tooth base and the weld joint.

[0004] The disadvantage of the aforementioned alloy teeth is that when they are installed with the drill bit body, there is a slippage phenomenon at the tail end of the connection with the drill bit body, which can easily cause the alloy teeth to loosen and affect the rock drilling effect. To address this, we have designed a hard alloy tooth with an anti-slip strip structure. Summary of the Invention

[0005] The purpose of this invention is to provide a carbide tooth with an anti-slip strip structure to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solution: a hard alloy tooth with an anti-slip strip structure, comprising an alloy tooth column and a hemispherical tooth head, wherein the hemispherical tooth head is integrally formed with the alloy tooth column, and a plurality of annularly distributed strip-shaped recesses are provided at the bottom of the outer side wall of the alloy tooth column, wherein an anti-slip convex strip is welded inside each strip-shaped recess, and an annular reinforcing ring is provided at the top of the outer wall of the alloy tooth column, wherein the annular reinforcing ring is connected to the top of each anti-slip convex strip.

[0007] In the aforementioned type of cemented carbide tooth with anti-slip strip structure, the bottom of the alloy tooth column is provided with multiple radially distributed bosses, each boss having a different length.

[0008] In the aforementioned type of cemented carbide tooth with anti-slip strip structure, an inner channel is provided at the bottom center of the alloy tooth column, and solder is deposited in the inner channel.

[0009] In the aforementioned cemented carbide tooth with anti-slip strip structure, multiple straight channels are provided on the spherical surface of the hemispherical tooth head, and a diamond core is inserted into the interior of each straight channel.

[0010] In the aforementioned type of cemented carbide tooth with anti-slip strip structure, each diamond core post has an oblique elliptical surface at its end, which is flush with the spherical surface of the hemispherical tooth head.

[0011] In the aforementioned type of cemented carbide tooth with anti-slip strip structure, the depth of the inner channel provided at the center of the bottom of the alloy tooth column is four millimeters.

[0012] Compared with the prior art, the advantages of the carbide tooth with anti-slip strip structure of this utility model are as follows: By opening multiple annularly distributed strip-shaped recesses at the bottom of the outer wall of the alloy tooth column, and welding anti-slip convex strips inside each strip-shaped recess, and setting an annular reinforcing ring connected to the top of each anti-slip convex strip, the tail of the alloy tooth has good connection and firmness with the drill bit body when it is embedded and installed, and the alloy tooth will not easily loosen, thereby achieving a highly efficient rock drilling effect; by opening multiple straight channels on the spherical surface of the hemispherical tooth head, and inserting diamond cores into the interior of each straight channel, the impact resistance of the carbide ball tooth is enhanced, and it has extremely high wear resistance, thus improving the wear resistance of the hemispherical tooth head. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a cemented carbide tooth with an anti-slip strip structure according to this utility model.

[0014] Figure 2 This is a three-dimensional structural diagram of a carbide tooth column with an anti-slip strip structure according to this utility model.

[0015] Figure 3 This is a schematic diagram of the planar structure of a hemispherical tooth head with anti-slip strip structure of a cemented carbide tooth according to this utility model.

[0016] In the diagram, 1. Alloy tooth column; 2. Hemispherical tooth head; 3. Annular reinforcing ring; 4. Strip-shaped notch; 5. Anti-slip ridge; 6. Boss column; 7. Inner channel; 8. Diamond core column; 9. Sloping elliptical surface. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a cemented carbide tooth with an anti-slip strip structure;

[0019] Example 1: The alloy tooth includes an alloy tooth column 1 and a hemispherical tooth head 2. The hemispherical tooth head 2 is integrally formed with the alloy tooth column 1. Multiple annularly distributed strip-shaped recesses 4 are provided at the bottom of the outer side wall of the alloy tooth column 1. Anti-slip protrusions 5 are welded inside each strip-shaped recess 4. An annular reinforcing ring 3 is provided at the top of the outer side wall of the alloy tooth column 1. The annular reinforcing ring 3 is connected to the top of each anti-slip protrusion 5.

[0020] This ensures a strong and secure connection between the tail end of the alloy teeth and the drill bit body during installation, preventing the alloy teeth from easily loosening and thus achieving efficient rock drilling results.

[0021] To ensure better welding with the drill bit, the following solution is adopted:

[0022] Example 2: The alloy tooth includes an alloy tooth column 1 and a hemispherical tooth head 2. The hemispherical tooth head 2 is integrally formed with the alloy tooth column 1. Multiple annularly distributed strip-shaped recesses 4 are provided at the bottom of the outer side wall of the alloy tooth column 1. Anti-slip protrusions 5 are welded inside each strip-shaped recess 4. An annular reinforcing ring 3 is provided at the top of the outer side wall of the alloy tooth column 1. The annular reinforcing ring 3 is connected to the top of each anti-slip protrusion 5. Multiple radially distributed bosses 6 are provided at the bottom of the alloy tooth column 1. The length of each boss 6 is different. An inner channel 7 is provided at the center of the bottom of the alloy tooth column 1. Solder is deposited in the inner channel of the inner channel 7. The depth of the inner channel 7 at the center of the bottom of the alloy tooth column 1 is four millimeters.

[0023] The purpose of this scheme is to allow the alloy tooth post 1 to be inserted into the tooth hole of the drill bit body. The boss post 6 of the alloy tooth post 1 forms a gap with the bottom surface of the tooth hole due to support. During the process of welding the two together, the melted solder can flow into the gap between the bottom of the cemented carbide tooth and the base body, thereby increasing the contact firmness.

[0024] Example 3: The alloy tooth includes an alloy tooth column 1 and a hemispherical tooth head 2. The hemispherical tooth head 2 is integrally formed with the alloy tooth column 1. Multiple annularly distributed strip-shaped recesses 4 are formed at the bottom of the outer side wall of the alloy tooth column 1. Each strip-shaped recess 4 has an anti-slip protrusion 5 welded inside. An annular reinforcing ring 3 is provided at the top of the outer wall of the alloy tooth column 1, and the annular reinforcing ring 3 is connected to the top of each anti-slip protrusion 5. Multiple straight channels are formed on the spherical surface of the hemispherical tooth head 2, and a diamond core 8 is inserted into the interior of each straight channel. Each diamond core 8 has a beveled elliptical surface 9 at its end, flush with the spherical surface of the hemispherical tooth head 2.

[0025] The purpose of this solution is to enhance the impact resistance of carbide ball teeth, provide them with extremely high wear resistance, and improve the wear resistance of the hemispherical tooth head.

[0026] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A hard metal tooth with anti-slip structure, comprising a hard metal tooth body (1) and a semi-spherical tooth head (2) which is integrally formed with the hard metal tooth body (1), characterized in that, The alloy tooth column (1) has multiple annularly distributed strip-shaped notches (4) at the bottom of its outer side wall. Each strip-shaped notch (4) is welded with an anti-slip ridge (5). An annular reinforcing ring (3) is provided at the top of the outer side wall of the alloy tooth column (1). The annular reinforcing ring (3) is connected to the top of each anti-slip ridge (5).

2. The cemented carbide tooth with anti-slip structure according to claim 1, characterized in that, The bottom of the alloy toothed column (1) is provided with multiple radially distributed bosses (6), and the length of each boss (6) is different.

3. The cemented carbide tooth with anti-slip structure according to claim 1, characterized in that, The alloy toothed column (1) has an inner channel (7) at the bottom center, and solder is deposited in the inner channel (7).

4. The cemented carbide tooth with anti-slip structure according to claim 1, characterized in that, The hemispherical tooth head (2) has multiple straight channels on its spherical surface, and a diamond core (8) is inserted into the interior of each straight channel.

5. The cemented carbide tooth with anti-slip structure according to claim 4, characterized in that, Each diamond core (8) has an oblique elliptical surface (9) at its end, which is flush with the spherical surface of the hemispherical tooth head (2).

6. A cemented carbide tooth with an anti-slip strip structure according to claim 3, characterized in that, The depth of the inner channel (7) provided at the bottom center of the alloy toothed column (1) is four millimeters.

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