CN213807683U

CN213807683U - High-temperature-resistant cylindrical tungsten alloy drill bit capable of being replaced quickly

Info

Publication number: CN213807683U
Application number: CN202022848258.0U
Authority: CN
Inventors: 王伟梁; 孙廷枢; 刘敏锋; 冷涛
Original assignee: Jiangsu Gate Tungsten Technology Co ltd
Current assignee: Jiangsu Gate Tungsten Technology Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-07-27
Anticipated expiration: 2030-12-01

Abstract

The utility model discloses a but high temperature resistant quick replacement's cylindrical tungsten alloy drill bit, including the drill bit, it is protruding to be provided with the spiral on the outer wall of drill bit, and the welding has curved shape tool bit on the drill bit, and it has half conical cutter head still to weld on the drill bit, and it is protruding to be provided with the hemisphere on the half conical cutter head, and the central point of drill bit puts and is provided with built-in hole, still welds the supporting shoe on the drill bit, and the welding has tooth arch on the supporting shoe. Through the cooperation of a plurality of tool bits, it is more to compare single spiral tool bit and bore the effect, and mutually support for the tunnel inner wall is when drilling, and the shaping is higher, improves and bores the quality.

Description

High-temperature-resistant cylindrical tungsten alloy drill bit capable of being replaced quickly

Technical Field

The utility model belongs to the technical field of the tungsten alloy drill bit, specifically be a but high temperature resistant quick replacement's cylindrical tungsten alloy drill bit.

Background

The double-mode shield machine has an earth pressure balance tunneling mode and a muddy water balance tunneling mode, is suitable for tunneling in most stratums, and can realize switching of the two modes according to actual conditions of engineering such as geology and the like.

In the application process of the dual-mode shield machine, the dual-mode shield machine has the advantages of strong adaptability, high wind risk resistance, high tunneling efficiency and the like, so that the dual-mode shield machine is increasingly wide in application range in each infrastructure of China.

When some shield machines are under construction, the planetary drill bit can be adopted, the main working process is that the large drill bit has a driving part, and the small drill bit on the individual large drill bit can also be driven independently to realize dual drilling, but most of the small drill bits are simple, the spiral drill bit is mostly arranged, the drilling effect is not high, and the drilling quality is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a but high temperature resistant quick replacement's cylindrical tungsten alloy drill bit to solve little drill bit and bore the poor problem of effect.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a but high temperature resistant quick replacement's cylindrical tungsten alloy drill bit, includes the drill bit, it is protruding to be provided with the spiral on the outer wall of drill bit, the welding has curved cutter head on the drill bit, it has half conical cutter head still to weld on the drill bit, it is protruding to be provided with the hemisphere on the half conical cutter head, the central point of drill bit puts and is provided with built-in hole, still weld the supporting shoe on the drill bit, the welding has tooth arch on the supporting shoe.

Preferably, the number of curved shape tool bits and the number of supporting shoe are six, and evenly distributed sets up, and curved shape tool bit plays a main effect of boring when drilling.

Preferably, the number of half cone-shaped tool bits is eight, and evenly distributed sets up, when can boring into the difficulty to curved shape tool bit, carries out the supplementary brill and goes into.

Preferably, the number of the hemispherical bulges on the semi-conical cutter head is not less than seven, so that the abrasive drilling effect can be improved, and the drilling capability of the semi-conical cutter head is ensured.

Preferably, the number of tooth protrusions on the supporting block is not less than three, and the inner wall of the tunnel after the curved cutter bit is drilled and ground can be cleaned in an auxiliary mode, so that the condition of unevenness is avoided.

Preferably, the knife edge of the curved knife head is in a narrow-mouth form, so that the knife edge can be better contacted with an excavated part, and blockage is avoided.

Preferably, the tip end of the semi-conical cutter head is directed to the built-in hole, and the built-in hole can be used as a discharge hole, so that waste powder can be discharged from the built-in hole.

Compared with the prior art, the beneficial effects of the utility model are that: through the cooperation of a plurality of tool bits, it is more to compare single spiral tool bit and bore the effect, and mutually support for the tunnel inner wall is when drilling, and the shaping is higher, improves and bores the quality.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the distribution of curved cutting tools according to the present invention;

fig. 3 is an enlarged schematic view of the utility model at a;

fig. 4 is a schematic view of the tooth protrusion distribution of the present invention.

In the figure: 1. a drill bit; 11. a spiral protrusion; 12. a curved cutter head; 13. a hemispherical protrusion; 14. a semi-conical cutter head; 15. a built-in hole; 16. a support block; 17. the tooth is protruding.

Detailed Description

Referring to fig. 1, 2 and 3, the high temperature resistant rapidly replaceable cylindrical tungsten alloy drill bit comprises a drill bit 1, wherein a spiral protrusion 11 is arranged on the outer wall of the drill bit 1, a curved cutter head 12 is welded on the drill bit 1, a semi-conical cutter head 14 is also welded on the drill bit 1, a semi-conical protrusion 13 is arranged on the semi-conical cutter head 14, a built-in hole 15 is arranged at the central position of the drill bit 1, a supporting block 16 is also welded on the drill bit 1, and a tooth protrusion 17 is welded on the supporting block 16.

Referring to fig. 1 and 2, the number of the curved cutting heads 12 and the number of the supporting blocks 16 are six and are uniformly distributed, and the curved cutting heads 12 have a main drilling effect when drilling.

Referring to fig. 1 and 2, the number of the half cone bits 14 is eight, and the half cone bits are uniformly distributed, so that auxiliary drilling can be performed when drilling into the curved bit 12 is difficult.

Referring to fig. 1 and 2, the number of the hemispherical protrusions 13 on the half cone 14 is not less than seven, so that the abrasive drilling effect can be improved, and the drilling capability of the half cone 14 can be ensured.

Referring to fig. 2, 3 and 4, the number of the tooth protrusions 17 on the supporting block 16 is not less than three, so that the inner wall of the tunnel drilled and ground by the curved cutter head 12 can be cleaned in an auxiliary manner, and the condition of unevenness is avoided.

Referring to fig. 2, the cutting edge of the curved cutting head 12 is in the form of a narrow opening, which can better contact with the excavated part and avoid jamming.

Referring to fig. 2, the tip end of the half-cone cutter head 14 is directed toward the built-in hole 15, and the built-in hole 15 may serve as a discharge hole so that the waste powder can be discharged from the built-in hole 15.

The working principle of the scheme is as follows: the number of the curved cutter heads 12 and the number of the supporting blocks 16 are six and are evenly distributed, the curved cutter heads 12 play a main drilling effect when drilling, the number of the semi-conical cutter heads 14 is eight, and the semi-conical cutter head 14 is evenly distributed and arranged, so that auxiliary drilling can be performed when the curved cutter head 12 is difficult to drill, the number of the semi-conical cutter head 14 on the semi-conical cutter head 13 is not less than seven, the abrasive drilling effect can be improved, the drilling capability of the semi-conical cutter head 14 is ensured, the number of the tooth protrusions 17 on the supporting block 16 is not less than three, can carry out auxiliary cleaning on the inner wall of the tunnel drilled and ground by the curved cutter head 12, avoid the uneven condition, the knife edge of the curved knife head 12 is in a narrow-mouth shape and can be better contacted with an excavated part to avoid blockage, the tip direction of the semi-conical knife head 14 points to the built-in hole 15, and the built-in hole 15 can be used as a discharge hole, so that waste powder can be discharged from the built-in hole 15.

Claims

1. A high temperature resistant cylindrical tungsten alloy drill bit capable of being replaced quickly comprises a drill bit (1) and is characterized in that: be provided with spiral arch (11) on the outer wall of drill bit (1), the welding has curved shape tool bit (12) on drill bit (1), it has half cone cutter head (14) still to weld on drill bit (1), be provided with hemisphere arch (13) on half cone cutter head (14), the central point of drill bit (1) puts and is provided with built-in hole (15), still weld supporting shoe (16) on drill bit (1), the welding has tooth arch (17) on supporting shoe (16).

2. The refractory fast replaceable cylindrical tungsten alloy bit of claim 1 wherein: the number of the curved cutter heads (12) and the number of the supporting blocks (16) are six and are uniformly distributed.

3. The refractory fast replaceable cylindrical tungsten alloy bit of claim 1 wherein: the number of the semi-conical cutter heads (14) is eight, and the semi-conical cutter heads are uniformly distributed.

4. The refractory fast replaceable cylindrical tungsten alloy bit of claim 1 wherein: the number of the hemispherical bulges (13) on the semi-conical cutter head (14) is not less than seven.

5. The refractory fast replaceable cylindrical tungsten alloy bit of claim 1 wherein: the number of the tooth protrusions (17) on the supporting block (16) is not less than three.

6. The refractory fast replaceable cylindrical tungsten alloy bit of claim 1 wherein: the knife edge of the curved knife head (12) is in a narrow-mouth form.

7. The refractory fast replaceable cylindrical tungsten alloy bit of claim 1 wherein: the tip direction of the semi-conical cutter head (14) points to the built-in hole (15).