A rotary pick

Abstract

The application relates to the technical field of cutting equipment, in particular to a rotary cutting tooth which comprises a base body, an alloy head, a first spherical alloy bean and a second spherical alloy bean; the base body comprises a head portion, a connecting portion and a tooth shank portion in sequence; the head portion is a reduced-diameter structure, the head portion is provided with a conical surface, the alloy head is embedded in the center of the front end of the head portion, the first spherical alloy bean and the second spherical alloy bean are uniformly embedded on the conical surface of the head portion, the diameter of the first spherical alloy bean is larger than that of the second spherical alloy bean; and the tooth shank portion is used for fixedly connecting with a tooth seat. In the application, the first spherical alloy bean and the second spherical alloy bean are cooperatively matched, the efficiency of cutting the rock-soil medium into small-particle waste by the rotary cutting tooth can be improved, and the hole-forming efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of cutting equipment technology, and in particular to a rotary cutting tooth. Background Technology

[0002] Rotary cutting teeth (also known as rotary drilling teeth) are the core cutting and crushing components of rotary drilling rigs. They are used to cut rock and soil media and work with the drill bucket to complete drilling operations. They are widely used in building pile foundations, mining, and other fields.

[0003] Rotary cutting cutters mainly consist of a base and a carbide head. The carbide head is embedded in the top of the base, which is connected to the rotary drilling rig. Rotary cutting cutters rely on the torque (rotational power) and axial pressure (feed power) of the rotary drilling rig; this causes the carbide head at the top of the cutting cutter to apply significant pressure to the rock and soil, causing the cutting cutter to rotate and cut the rock and soil. In other words, the cutting cutter converts the energy output from the rotary drilling rig into rock and soil breaking energy to cut and break the rock and soil. With the development of engineering construction, the construction scenarios faced by rotary cutting cutters are becoming increasingly complex, and the cutting efficiency of existing rotary cutting cutters is insufficient to meet actual needs. Utility Model Content

[0004] In order to improve the cutting efficiency of rotary cutting teeth, this application provides a rotary cutting tooth.

[0005] This application provides a rotary cutting tooth, which adopts the following technical solution: A rotary cutting tooth includes a base, an alloy head, a first spherical alloy bead, and a second spherical alloy bead. The base sequentially includes a head, a connecting portion, and a shank portion. The head has a reduced diameter structure and a tapered surface. The alloy head is embedded in the center of the front end of the head. The first and second spherical alloy beads are evenly embedded in the tapered surface of the head, and the diameter of the first spherical alloy bead is larger than the diameter of the second spherical alloy bead. The shank portion is used for fixed connection with a tooth base.

[0006] By adopting the above technical solution, the first spherical alloy bead matrix has a larger bonding area, allowing it to withstand higher impact loads. This results in better compression and crushing of large-volume, high-hardness soil and rock media, leading to cracking, breakage, and detachment of the soil and rock media. The second spherical alloy bead can further cut the soil and rock media crushed by the first spherical alloy bead, further reducing the particle diameter of the crushed soil and rock media. In other words, the synergistic cooperation between the first and second spherical alloy beads improves the efficiency of the rotating cutting teeth in cutting soil and rock media into small-particle waste chips, which is beneficial for improving hole-forming efficiency.

[0007] Optionally, the first spherical alloy bead and the second spherical alloy bead are tangent to the same conical surface.

[0008] By adopting the above technical solution, the first spherical alloy bead and the second spherical alloy bead can simultaneously come into contact with the soil and rock medium, so as to give full play to the synergistic effect of the first spherical alloy bead and the second spherical alloy bead and improve the cutting efficiency of the rotating cutting tooth on the soil and rock medium.

[0009] Optionally, the first spherical alloy bead is annularly spaced on the conical surface of the head, and the second spherical alloy bead is disposed on the side of the first spherical alloy bead away from the alloy cutter head, and the second spherical alloy bead is annularly spaced on the conical surface of the head.

[0010] By adopting the above technical solution, when the rotating cutting tooth cuts the rock and soil medium, the front end area of ​​the head is subjected to greater force along the direction from the head to the tooth shank, while the middle area of ​​the head is subjected to less force. The first spherical alloy bead is set in the front end area of ​​the head, and the bonding area of ​​the first spherical alloy bead matrix is ​​larger. This allows the first spherical alloy bead to withstand higher impact loads, and makes the spherical alloy bead have a better cutting effect on large-volume, high-hardness rock and soil media.

[0011] Optionally, the number of the second spherical alloy beads is greater than the number of the second spherical alloy beads.

[0012] By adopting the above technical solution and setting a denser second spherical alloy bead to form a denser protective layer, the wear resistance of the rotary cutting tooth is further improved, and the cutting efficiency of the rotary cutting tooth on rock and soil media is increased.

[0013] Optionally, it also includes a diamond cutting tip, which is arranged in a ring on the conical surface of the head and disposed between the alloy head and the first spherical alloy bead.

[0014] By adopting the above technical solution, after the alloy head impacts and fracturing the rock and soil medium, the diamond cutting head can grind the broken rock and soil medium, so that the broken rock and soil medium can be detached, thereby improving the cutting efficiency of the rotating cutting teeth on the rock and soil medium.

[0015] Optionally, the diamond cutting tip has an arc-shaped plate structure, and the diamond cutting tip is arranged in a ring at intervals on the conical surface of the head.

[0016] By adopting the above technical solution, the diamond cutting tip lattice is set on the conical surface of the head to better disperse stress, improve the impact resistance of the diamond cutting tip, and increase the service life of the rotary cutting tooth.

[0017] Optionally, the head is provided with a chip removal groove on the side near the connecting part, and multiple chip removal grooves are arranged at intervals around the head.

[0018] By adopting the above technical solution, the chip removal groove on the outer periphery of the head is used to guide the rock chips out, reduce the cutting resistance of the rotating cutting teeth, and improve the cutting efficiency of the rotating cutting teeth on rock and soil.

[0019] Optionally, the head is provided with an annular groove on the side near the connecting part.

[0020] By adopting the above technical solution and setting an annular groove at the bottom of the head, the risk of fatigue fracture of the substrate under high-frequency impact can be reduced.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The first spherical alloy bead has a larger bonding area, allowing it to withstand higher impact loads. This results in better compression and crushing of large-volume, high-hardness soil and rock media, leading to cracking, breakage, and detachment. The second spherical alloy bead can further cut the soil and rock media crushed by the first bead, further reducing the particle diameter. Through the synergistic cooperation of the first and second spherical alloy beads, the efficiency of the rotating cutting teeth in cutting the soil and rock media into small waste particles can be improved, which is beneficial for improving hole formation efficiency. 2. When the rotating cutting tooth cuts the rock and soil medium, the front end area of ​​the head is subjected to greater force along the direction from the head to the tooth shank, while the middle area of ​​the head is subjected to less force. The first spherical alloy bead is set in the front end area of ​​the head, and the bonding area of ​​the first spherical alloy bead matrix is ​​larger. This allows the first spherical alloy bead to withstand higher impact loads, and makes the spherical alloy bead have a better cutting effect on large-volume, high-hardness rock and soil media. 3. After the alloy head impacts and fracturing the rock and soil medium, the diamond cutting head can grind the broken rock and soil medium to facilitate the breakage of the broken rock and soil medium and improve the cutting efficiency of the rotating cutting teeth on the rock and soil medium. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the rotating cutting tooth structure in Example 1.

[0023] Figure 2 This is a partial cross-sectional view of the rotating cutting tooth in Example 1.

[0024] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0025] Figure 4 This is a top view of the rotating cutting tooth in Example 1.

[0026] Figure 5 This is a schematic diagram of the rotating cutting tooth structure in Example 2.

[0027] Figure 6This is a partial cross-sectional view of the rotating cutting tooth in Example 2.

[0028] Figure 7 yes Figure 6 Enlarged view of point B in the middle.

[0029] Explanation of reference numerals in the attached drawings: 1. Base; 11. Head; 111. First inlay groove; 112. Second inlay groove; 113. Third inlay groove; 114. Fourth inlay groove; 12. Connecting part; 13. Tooth shank part; 14. Chip removal groove; 15. Ring groove; 2. Alloy head; 3. First spherical alloy bead; 4. Second spherical alloy bead; 5. Diamond cutter head. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 Section 7 provides further details regarding this application.

[0031] This application discloses a rotary cutting tooth. (Refer to...) Figure 1 The rotary cutting tooth includes a base 1, an alloy head 2, a first spherical alloy bead 3, and a second spherical alloy bead 4. The base 1 is made of high-strength steel; the alloy head 2, the first spherical alloy bead 3, and the second spherical alloy bead 4 are all made of hard alloy material. The connecting part 12 is used to connect the head 11 and the tooth shank part 13, and the tooth shank part 13 is used to fix it to the tooth seat, which is fixed on the rotary drilling rig.

[0032] Reference Figure 1 and Figure 2 The base 1 includes a head 11, a connecting part 12, and a toothed shank part 13 in sequence. The head 11 has a reduced diameter structure and a tapered surface. A third inlay groove 113 is provided at the center of the front end of the head 11, and the alloy head 2 is inlaid in the first inlay groove 111 at the front end of the head 11.

[0033] Reference Figure 2 and Figure 3 Similarly, the conical surface of the head 11 is provided with a first inlay groove 111 for fixing the first spherical alloy bead 3 and a second inlay groove 112 for fixing the second spherical alloy bead 4. The alloy head 2, the first spherical alloy bead 3 and the second spherical alloy bead 4 can be fixed to the surface of the substrate 1 by a welding process.

[0034] Reference Figure 1 and Figure 4 The diameter of the first spherical alloy bead 3 is larger than the diameter of the second spherical alloy bead 4. The first spherical alloy bead 3 is arranged in a ring at intervals on the conical surface of the head 11. The second spherical alloy bead 4 is arranged on the side of the first spherical alloy bead 3 away from the alloy cutter head, and is also arranged in a ring at intervals on the conical surface of the head 11. In this embodiment, the first spherical alloy bead 3 and the second spherical alloy bead 4 are tangent to the same conical surface, and the number of second spherical alloy bead 4 is greater than the number of second spherical alloy bead 4.

[0035] Reference Figure 1 The head 11 has a chip removal groove 14 near the connecting part 12, and multiple chip removal grooves 14 are arranged at intervals around the head 11. The chip removal grooves 14 on the outer periphery of the head 11 are used to guide the rock chips out, reduce the cutting resistance of the rotating cutting teeth, and improve the cutting efficiency of the rotating cutting teeth on rock and soil. The head 11 has an annular groove 15 near the connecting part 12 to reduce the risk of fatigue fracture of the matrix 1 under high frequency impact.

[0036] The implementation principle of a rotary cutting tooth in this application embodiment is as follows: When the rotating cutting tooth cuts the rock and soil medium, along the direction from the head 11 to the shank 13, the front end area of ​​the head 11 is subjected to greater force, while the middle area of ​​the head 11 is subjected to less force.

[0037] Reference Figure 1 The first spherical alloy bead 3 is located in the front end region of the head 11, and the bonding area of ​​the first spherical alloy bead 3 and the substrate 1 is large. This allows the first spherical alloy bead 3 to withstand higher impact loads, and enables the spherical alloy bead to have a better squeezing and crushing effect on large-volume, high-hardness rock and soil media, causing the rock and soil media to crack, break and fall off.

[0038] Reference Figure 1 The second spherical alloy bead 4 can continue to cut the rock and soil medium crushed by the first spherical alloy bead 3, further reducing the particle diameter of the crushed rock and soil medium. The bonding area between the second spherical alloy bead 4 and the substrate 1 is small, which facilitates welding the second spherical alloy onto the substrate 1 and reduces production costs.

[0039] That is, by working together with the first spherical alloy bead 3 and the second spherical alloy bead 4, the efficiency of the rotating cutting teeth in cutting the rock and soil medium into small particles of waste can be improved, which is beneficial to improving the hole forming efficiency.

[0040] Reference Figure 2 The first spherical alloy bead 3 and the second spherical alloy bead 4 are tangent to the same conical surface, so that the first spherical alloy bead 3 and the second spherical alloy bead 4 can simultaneously come into contact with the soil and rock medium, so as to give full play to the synergistic effect of the first spherical alloy bead 3 and the second spherical alloy bead 4 and improve the cutting efficiency of the rotating cutting teeth on the soil and rock medium.

[0041] Furthermore, by setting a denser second spherical alloy bead 4 to form a denser protective layer, the wear resistance of the rotary cutting tooth is further improved, and the cutting efficiency of the rotary cutting tooth on rock and soil media is increased.

[0042] Example 2 The difference between Example 2 and Example 1 is as follows: Reference Figure 5The rotating cutting tooth also includes a diamond cutting head 5, which is arranged in a ring on the conical surface of the head 11 and is positioned between the alloy head 2 and the first spherical alloy bead 3.

[0043] Reference Figure 6 and Figure 7 In this embodiment, the head 11 of the substrate 1 is provided with a fourth inlay groove 114 for accommodating the diamond cutter head 5, and the diamond cutter head 5 is welded and fixed to the substrate 1.

[0044] The diamond cutting head 5 comprises a metal matrix and diamond particles, with the diamond particles evenly distributed within the metal matrix. When the rotary cutting teeth rotate, the diamond particles in the diamond cutting head 5 grind the rock and soil medium, reducing larger rock and soil debris to smaller diameter debris. This facilitates the removal of rock and soil debris when the rotary cutting teeth cut the rock and soil medium, reduces the cutting resistance of the rotary cutting teeth, and improves the cutting efficiency of the rotary cutting teeth on the rock and soil medium.

[0045] In this embodiment, the diamond cutting head 5 has an arc-shaped sheet structure, and the diamond cutting head 5 is arranged in a ring at intervals on the conical surface of the head 11.

[0046] The implementation principle of a rotary cutting tooth in this application embodiment is as follows: Reference Figure 5 When the alloy head 2 impacts and fractures the rock and soil medium, the diamond cutting head 5 can grind the broken rock and soil medium, so that the broken rock and soil medium can be detached, thereby improving the cutting efficiency of the rotary cutting tooth on the rock and soil medium. The diamond cutting head 5 is lattice-shaped on the conical surface of the head 11 to better disperse stress, improve the impact resistance of the diamond cutting head 5, and increase the service life of the rotary cutting tooth.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rotary cutting tooth, characterized in that: It includes a base (1), an alloy head (2), a first spherical alloy bead (3), and a second spherical alloy bead (4); the base (1) includes a head (11), a connecting part (12), and a tooth shank part (13) in sequence; the head (11) has a reduced diameter structure and a conical surface; the alloy head (2) is embedded in the center of the front end of the head (11); the first spherical alloy bead (3) is evenly embedded in the conical surface of the head (11) along with the second spherical alloy bead (4); the diameter of the first spherical alloy bead (3) is larger than the diameter of the second spherical alloy bead (4); the tooth shank part (13) is used for fixed connection with the tooth seat.

2. The rotary cutting tooth according to claim 1, characterized in that: The first spherical alloy bead (3) and the second spherical alloy bead (4) are tangent to the same conical surface.

3. The rotary cutting tooth according to claim 2, characterized in that: The first spherical alloy bead (3) is arranged in annular intervals on the conical surface of the head (11), and the second spherical alloy bead (4) is arranged on the side of the first spherical alloy bead (3) away from the alloy head. The second spherical alloy bead (4) is arranged in annular intervals on the conical surface of the head (11).

4. The rotary cutting tooth according to claim 3, characterized in that: The number of the second spherical alloy bead (4) is greater than the number of the second spherical alloy bead (4).

5. The rotary cutting tooth according to claim 3, characterized in that: It also includes a diamond cutting tip (5), which is arranged in a ring on the conical surface of the head (11) and is disposed between the alloy head (2) and the first spherical alloy bead (3).

6. The rotary cutting tooth according to claim 5, characterized in that: The diamond cutting tip (5) has an arc-shaped sheet structure, and the diamond cutting tip (5) is arranged in a ring at intervals on the conical surface of the head (11).

7. The rotary cutting tooth according to claim 1, characterized in that: The head (11) is provided with a chip removal groove (14) on the side near the connecting part (12), and multiple chip removal grooves (14) are arranged around the head (11) at intervals.

8. The rotary cutting tooth according to claim 1, characterized in that: The head (11) has an annular groove (15) on the side near the connecting part (12).

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