Diamond compact anchor rod drill bit

Abstract

The utility model relates to the technical field of drill bits, in particular to a diamond compact anchor rod drill bit which comprises a drill bit body, a left blade and a right blade, a limiting groove is formed in the right blade, and a deslagging channel is expanded on the drill bit body, so that the size of the drill bit is reduced, the contact area of the drill bit and water is increased, the temperature of the drill bit is reduced, and the service life of the drill bit is prolonged. Compared with the prior art, the size of the drill bit is reduced, the situation that deslagging is difficult when the drill bit crushes complex rock stratums is reduced, and heat dissipation can be effectively accelerated in the tunneling process so that the influence of high temperature on the strength of the drill bit can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to drill bit technical field, especially in a kind of diamond compact anchor rod drill bit. BACKGROUND

[0002] When traditional anchor rod drill bit operates in gravel stratum, it is easy to cause slag to be discharged, drill bit temperature to rise too fast and then cause sticking, tooth breaking and other problems due to stratum broken, uneven hardness. In the prior art, drill bit volume is prone to blockage of chip removal channel, and cooling water channel design is single, so it is difficult to realize the synergistic effect of rapid heat dissipation and efficient discharge of rock debris, therefore, a diamond compact anchor rod drill bit is needed, which can reduce the volume of drill bit, reduce the difficulty of slag discharge when drill bit operates in broken complex stratum, and effectively accelerate heat dissipation during tunneling to reduce the influence of high temperature on drill bit strength. SUMMARY

[0003] The utility model solves the technical problems that provide a kind of diamond compact anchor rod drill bit, can reduce the volume of drill bit, reduce the difficulty of slag discharge when drill bit operates in broken complex stratum, and effectively accelerate heat dissipation during tunneling to reduce the influence of high temperature on drill bit strength.

[0004] In order to solve the above technical problems, the utility model adopts the technical scheme of a kind of diamond compact anchor rod drill bit, comprising:

[0005] Drill bit body, the lower part of drill bit body is provided with external thread, water inlet channel is arranged at external thread, left blade and right blade are arranged on drill bit body, and left blade and right blade are radially symmetrical and reverse on drill bit body, and the recess groove is arranged on left blade and right blade, and the diamond compact is welded on recess groove, the limiting slot is arranged on the blade, the limiting slot is arranged at first opening and second opening, the second opening faces upward, the second opening faces the side of left blade, the limiting slot is connected by first connecting plate, second connecting plate and third connecting plate, the first connecting plate is connected to the X side of right blade, and the second connecting plate and the third connecting plate are connected to both ends of the first connecting plate.

[0006] Further, the third connecting plate is inclinedly connected to one end of the first connecting plate, and the end of the third connecting plate away from the first connecting plate faces the external thread.

[0007] Further, the outer wall of external thread is provided with slag discharge channel, and one end of slag discharge channel is connected to the end of third connecting plate away from first connecting plate.

[0008] Further, the diamond compact is a circular piece.

[0009] Further, the first drainage hole is arranged on the body of drill bit, the first drainage hole is located between left blade and right blade, and the first drainage hole is communicated with water inlet channel.

[0010] Further, the second drainage hole is arranged in the limiting groove of the right blade, and the second drainage hole is connected with the water inlet channel.

[0011] The utility model discloses the beneficial effect lies in: compared with prior art, reduce the drill bit volume, reduce the difficult condition of drill bit in broken complex rock layer and appear and discharge, can effectively accelerate heat dissipation in the process of excavation to reduce the influence of high temperature to drill bit strength. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a structure schematic view of a diamond composite piece anchor rod drill bit of the embodiment of the utility model;

[0013] Fig. 2 It is a side view of a diamond composite piece anchor rod drill bit of the embodiment of the utility model;

[0014] Fig. 3 It is a water inlet channel structure schematic view of a diamond composite piece anchor rod drill bit of the embodiment of the utility model.

[0015] REFERENCE SIGNS

[0016] 1, drill bit body;11, outer thread;111, water inlet channel;12, left blade;13, right blade;131, limiting groove;1311, first opening;1312, second opening;1313, first connecting plate;1314, second connecting plate;1315, third connecting plate;

[0017] 2, diamond composite piece;

[0018] 3, discharge channel;

[0019] 4, first drainage hole;

[0020] 5, second drainage hole. DETAILED DESCRIPTION

[0021] To explain the technical content of the utility model, the purpose and effect realized in detail, the following will be explained by combining with the drawings.

[0022] Please refer to Figs. 1 to 3 A diamond composite piece anchor rod drill bit, comprising:

[0023] The drill bit body 1 is provided with an outer thread 11 at the lower part, and the outer thread 11 is provided with a water inlet channel 111. The drill bit body 1 is provided with a left blade 12 and a right blade 13, and the left blade 12 and the right blade 13 are radially symmetrical and opposite on the drill bit body. The left blade 12 and the right blade 13 are both provided with a groove, and the groove is welded with a diamond composite piece 2. The right blade 13 is provided with a limiting groove 131, and the limiting groove 131 is provided with a first opening 1311 and a second opening 1312. The second opening 1312 faces upward and is located on the side of the left blade 12. The limiting groove 131 is connected with a first connecting plate 1313, a second connecting plate 1314 and a third connecting plate 1315. The first connecting plate 1313 is connected with one side of the right blade 13 in the X direction. The second connecting plate 1314 and the third connecting plate 1315 are connected with both ends of the first connecting plate 1313.

[0024] In the above embodiment, by arranging the limiting groove 131 on the right blade 13, the channel for discharging the slag of the drill bit is wider, the speed of discharging the slag is improved, and the contact area of the drill bit with the cold water is larger, so that the temperature of the drill bit is reduced. Compared with the prior art, the volume of the drill bit is reduced, the difficulty of discharging the slag when the drill bit breaks the complex rock layer is reduced, and the heat dissipation in the tunneling process is accelerated to reduce the influence of high temperature on the strength of the drill bit.

[0025] As an optional embodiment, the third connecting plate 1315 is inclined and connected with one end of the first connecting plate 1313. The end of the third connecting plate 1315 away from the first connecting plate 1313 faces the outer thread 11.

[0026] In the above embodiment, by arranging the inclined third connecting plate 1315, the slag can be discharged outward from the third connecting plate 1315.

[0027] As an optional embodiment, the outer wall of the outer thread 11 is provided with a slag discharge channel 3. One end of the slag discharge channel 3 is connected with the end of the third connecting plate 1315 away from the first connecting plate 1313.

[0028] In the above embodiment, by connecting the slag discharge channel 3 with the third connecting plate 1315, not only the slag can be discharged outward from the third connecting plate 1315, but also the slag can be discharged directionally through the slag discharge channel 3, so that the difficulty of discharging the slag is reduced.

[0029] As an optional embodiment, the diamond composite piece 2 is a circular piece.

[0030] As an optional embodiment, the inner water channel of the outer thread is provided with a first drainage hole 4 on the body of the drill bit. The first drainage hole 4 is located between the left blade 12 and the right blade 13, and the first drainage hole 4 is connected with the water inlet channel 111.

[0031] In the above embodiment, the drill bit can be cooled in time through the water inlet channel 111 and the first drainage hole 4.

[0032] As an optional embodiment, the second drainage hole 5 is arranged in the limiting groove 131 of the right blade 13, the second drainage hole 5 is connected with the water inlet channel 111, and the diamond composite piece 2 on the right blade 13 is higher than the diamond composite piece 1-3 mm on the left blade 12.

[0033] In the above embodiment, by setting the height of the right blade 13 to be higher than that of the left blade 12, the greater cutting force generated by the right diamond composite piece 2 and the buffering effect of the left diamond composite piece 2 are combined in the drilling process, the vibration amplitude of the whole drill bit is reduced, the instantaneous impact damage caused by uneven rock layers is reduced, the right diamond composite piece 2 can be cooled in time through the second drainage hole 5 due to the greater shear force and higher temperature generated by the right diamond composite piece 2, and the service life is prolonged.

[0034] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent transformation or direct or indirect application in the related technical field by using the content of the present application is also included in the patent protection range of the present application.

Claims

1. A PDC hammer characterized by, The application relates to a drill bit, which comprises the following: A drill bit body, a lower part of the drill bit body is provided with an outer thread, a water inlet channel is arranged at the outer thread, left and right blades are arranged on the drill bit body, the left and right blades are radially symmetrical and reverse on the drill bit body, a female groove is arranged on each of the left and right blades, a diamond composite piece is welded on the female groove, a limiting groove is arranged on one of the blades, the limiting groove is arranged between a first opening and a second opening, the second opening faces upwards, the second opening faces one side of the left blade, the limiting groove is formed by a first connecting plate, a second connecting plate and a third connecting plate, the first connecting plate is connected to one side of the X direction of the right blade, the second connecting plate and the third connecting plate are connected to two ends of the first connecting plate.

2. The PDC bit according to claim 1, wherein, The third connecting plate is obliquely connected to one end of the first connecting plate, and the end of the third connecting plate away from the first connecting plate faces the outer thread.

3. The PDC bit according to claim 2, wherein, A slag discharge channel is arranged on the outer wall of the outer thread, and one end of the slag discharge channel is connected to the end of the third connecting plate away from the first connecting plate.

4. The PDC bit according to claim 1, wherein, The diamond composite piece is a circular piece.

5. The PDC bit according to claim 1, wherein, A first water discharge hole is arranged on the body of the drill bit, the first water discharge hole is located between the left and right blades, and the first water discharge hole is communicated with the water inlet channel.

6. The PDC bit according to claim 5, wherein, A second water discharge hole is arranged in the limiting groove of the right blade, the second water discharge hole is connected with the water inlet channel, and the diamond composite piece on the right blade is 1-3 mm higher than the diamond composite piece on the left blade.

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