CN210127825U - Anchor rod twist drill bit - Google Patents
Anchor rod twist drill bit Download PDFInfo
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- CN210127825U CN210127825U CN201920997254.3U CN201920997254U CN210127825U CN 210127825 U CN210127825 U CN 210127825U CN 201920997254 U CN201920997254 U CN 201920997254U CN 210127825 U CN210127825 U CN 210127825U
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Abstract
The utility model discloses an anchor rod twist drill bit, which comprises an integrally formed drill handle, a first twist drill bit and a second alloy drill bit, wherein the first twist drill bit comprises a base and a plurality of drill wings arranged around the outer ring of the base, the drill wings are arc-shaped panels, and the plurality of drill wings are spirally distributed around the axis of the base; the base is fixedly arranged at the top end of the drill handle, the bottom ends of the plurality of drill wings are fixedly arranged on the outer ring of the base and abut against the top end of the drill handle, and the tops of the plurality of drill wings are fixedly connected with each other; the top of the base is also provided with a plurality of second alloy drill bits which are spirally distributed around the axis, and the top of each second alloy drill bit is provided with second drill teeth; the drill bit is suitable for hard-plastic slope support soil nail construction, the power and the missing place of the twist drill are supplemented, and quick soil taking and drilling can be realized.
Description
Technical Field
The utility model relates to an anchor rod twist drill bit belongs to rock drill bit technical field.
Background
The anchor rod is widely used in the construction of slope and tunnel main body reinforcement. During the operation and construction of common soil nailing walls, a twist drill or a drilling machine is usually used, the existing machine is slow to construct hard plastic soil layers, so that the construction period is prolonged, and particularly, the construction time is 4-5 hours slower than that of hole opening in the second half section of the hole.
The drill bit of stock has a variety, and every kind of drill bit all has its characteristics, and some drill bits among the prior art have the defect that the structure is unreasonable, and ordinary twist drill unearthed slowly, creeps into slowly, and current stock drill bit, chip removal ability is poor, often can damage the instrument because the mountain flour accumulation, influences the production progress.
SUMMERY OF THE UTILITY MODEL
For overcoming the not enough of prior art, the utility model provides an anchor rod twist drill bit, this drill bit is applicable to the construction of hard mould type slope support soil nail, has supplemented twist drill's power and disappearance place, can realize quick borrowing, creeps into.
The utility model discloses a following technical scheme realizes:
an anchor rod twist drill bit comprises a drill handle, a first twist drill bit and a second alloy drill bit which are integrally formed, wherein the first twist drill bit comprises a base and a plurality of drill wings arranged on the outer ring of the base in a surrounding mode, the drill wings are arc-shaped panels, and the plurality of drill wings are spirally distributed around the axis of the base; the base is fixedly arranged at the top end of the drill handle, the bottom ends of the plurality of drill wings are fixedly arranged on the outer ring of the base and abut against the top end of the drill handle, and the tops of the plurality of drill wings are fixedly connected with each other;
the top of the base is also provided with a plurality of second alloy drill bits which are spirally distributed around the axis, the second alloy drill bits are arranged on one side of the bottom end of the drill wing, the height of the second alloy drill bits is smaller than that of the drill wing, and the included angle between the second alloy drill bits and the axis direction is 0-30 degrees; the top of the second alloy drill bit is provided with second drill teeth, and the second drill teeth are of triangular prism-shaped structures;
a plurality of drill blades which are parallel to each other are arranged on the outer wall of the drill handle along the axis direction, and the tops of the drill blades are connected with the bottoms of the drill wings;
the anchor rod twist drill bit is internally provided with a water distribution cavity penetrating through the drill handle and the hollow interior of the base, and an outlet at the top of the water distribution cavity is arranged on the central axis of the drill wings.
Preferably, a plurality of first drill teeth are arranged on the outer side of the drill wing, and the drill teeth are of triangular prism-shaped structures.
Preferably, the outer wall of the drill handle is also provided with a plurality of parallel transverse grains perpendicular to the axis direction, and the transverse grains are arranged between the drill edges.
Preferably, the outer wall of the drill bit is provided with a thread.
Preferably, the diameter of the top of the second alloy drill bit is smaller than that of the bottom of the second alloy drill bit, and the outer wall of the second alloy drill bit is provided with drill threads.
Preferably, the diameter of the cylindrical surface on which the outer side of the bottom ends of the plurality of drill wings is located is larger than that of the cylindrical surface on which the outer wall of the drill shank is located, and the diameter of the drill shank is larger than that of the base.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses on first twist drill head, install a plurality of second alloy additional and turn round, two drill bits operate jointly, utilize the air compressor machine to drive the stock machine, and the second alloy is turned round and has been supplemented the power and the disappearance place of first twist drill head, can realize quick borrowing, creeps into.
The drill handle of the anchor rod drill bit, the first twist drill bit and the second alloy drill bit are integrally formed, so that the strength is high, and the installation is convenient; the chip removal groove is a spiral arc surface, so that the chip removal effect of the anchor rod drill bit is ensured; the arrangement of the water distribution cavity and the limber hole has the advantages of large water outlet force, strong impulsive force, chip removal benefiting and failure rate reduction.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present invention;
fig. 2 is a schematic top view of the structure of embodiment 1 of the present invention;
fig. 3 is a schematic diagram of a second drilling tooth and a water hole structure at the top of a second alloy drill according to the embodiment 2 of the present invention.
In the figure, a first twist drill 1, a second alloy drill 2, a drill handle 3, a water distribution cavity 4, a base 11, a drill wing 12, a first drill tooth 13, a taper angle 15, a second drill tooth 21, a drill thread 22, a water through hole 23, a drill edge 31, a transverse thread 32, a thread 33, a lower edge length 131 and an upper edge length 132.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but the scope of the present invention is not limited to these embodiments, and any changes or equivalent substitutions that do not depart from the spirit of the present invention are intended to be included within the scope of the present invention.
Example 1
An anchor rod twist drill comprises an integrally formed drill handle 3, a first twist drill 1 and a second alloy drill 2, wherein the first twist drill 1 comprises a base 11 and a plurality of drill wings 12 arranged on the outer ring of the base 11 in a surrounding mode, the drill wings 12 are arc-shaped panels, and the plurality of drill wings 12 are spirally distributed around the axis of the base 11; the base 11 is fixedly arranged at the top end of the drill handle 3, the bottom ends of the plurality of drill wings 12 are fixedly arranged on the outer ring of the base 11 and abut against the top end of the drill handle 3, and the tops of the plurality of drill wings 12 are mutually and fixedly connected;
the top of the base 11 is also provided with a plurality of second alloy drill bits 2 which are spirally distributed around the axis, the second alloy drill bits 2 are arranged on one side of the bottom ends of the drill wings, the height of the second alloy drill bits 2 is smaller than that of the drill wings 12, and the included angle between the second alloy drill bits 2 and the axis direction is 0-30 degrees; the top of the second alloy drill bit 2 is provided with a second drill tooth 21, and the second drill tooth 21 is of a triangular prism-shaped structure;
the length of the second alloy drill bit 2 is 10-15cm, and the length of the drill wing 12 is 15-20 cm.
A plurality of drill blades 31 which are parallel to each other are arranged on the outer wall of the drill shank 3 along the axial direction, and the tops of the drill blades 31 are connected with the bottoms of the drill wings 12;
the anchor rod twist drill bit is internally provided with a water distribution cavity 4 penetrating through the drill handle 3 and the hollow interior of the base 11, and the top outlet of the water distribution cavity 4 is arranged on the central axis of the drill wings 12.
Preferably, a plurality of first drill teeth 13 are arranged on the outer side of the drill wing 12, the first drill teeth 13 are in a triangular prism structure, and the upper side length 132 of the triangular prism structure is smaller than the lower side length 131, so that the drilling effect and speed are facilitated.
Preferably, the outer wall of the drill shank 3 is further provided with a plurality of parallel cross striations 32 perpendicular to the axial direction, and the cross striations 32 are arranged between the drill edges 31.
Preferably, the outer wall of the drill bit 31 is provided with a thread 33 to facilitate the drilling effect and speed.
Preferably, the second alloy drill bit 2 has a smaller top diameter than bottom diameter and the outer wall is provided with drill threads 22.
Preferably, the diameter of the outer circular surface where the outer side of the bottom end of the plurality of drill wings 12 is larger than the diameter of the cylindrical surface where the outer wall of the drill shank 3 is located, so that a chip removal space is ensured, and chip removal is facilitated.
The diameter of the drill handle 3 is larger than that of the base 11, so that the water distribution effect and the water outlet force are ensured.
Spiral chip grooves are formed among the drill wings, the tops of the drill wings 12 are fixedly connected with each other, a conical taper angle 15 is arranged at the top of the connecting part, and the angle of the taper angle 15 is 130 degrees and 150 degrees.
Example 2
In the anchor twist drill according to embodiment 1, the top of the second alloy drill 2 is further provided with a water through hole 23.
The drill handle 3, the first twist drill 1 and the second alloy drill 2 of the anchor rod drill of the utility model are integrally formed, so that the strength is high and the installation is convenient; the chip removal groove is a spiral arc surface, so that the chip removal effect of the anchor rod drill bit is ensured; the arrangement of the water distribution cavity and the limber hole has the advantages of large water outlet force, strong impulsive force, chip removal benefiting and failure rate reduction.
After the utility model is powered on, the drill bit rapidly rotates to break the rock soil layer, the chips are discharged by the spiral chip discharge groove, high pressure water is filled into the drill bit through the water distribution cavity by utilizing the high pressure water, thereby facilitating chip discharge,
in the process of drilling a loose soil layer containing sandy soil and small gravels, the conventional drill bit has a smaller slag discharge groove, so that the drill bit can generate larger resistance due to unsmooth slag discharge in the drilling process, the resistance can act on the hole wall, the hole collapse phenomenon is easy to occur due to looser soil layer on the hole wall, in addition, the larger resistance can aggravate the abrasion of the drill bit, and the service life and the drilling depth of the drill bit are reduced. This application second alloy is turned round and has been supplemented the power and the disappearance place of first twist drill, can realize quick borrowing, creeps into. And the water in the water distribution cavity and the water through hole can prevent dust and reduce the temperature of the drill bit.
The method is simple to operate, high in flexibility and suitable for rapid field operation.
The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The anchor rod twist drill bit is characterized by comprising a drill handle, a first twist drill bit and a second alloy drill bit which are integrally formed, wherein the first twist drill bit comprises a base and a plurality of drill wings arranged on the outer ring of the base in a surrounding mode, the drill wings are arc-shaped panels, and the plurality of drill wings are spirally distributed around the axis of the base; the base is fixedly arranged at the top end of the drill handle, the bottom ends of the plurality of drill wings are fixedly arranged on the outer ring of the base and abut against the top end of the drill handle, and the tops of the plurality of drill wings are fixedly connected with each other;
the top of the base is also provided with a plurality of second alloy drill bits which are spirally distributed around the axis, the second alloy drill bits are arranged on one side of the bottom end of the drill wing, the height of the second alloy drill bits is smaller than that of the drill wing, and the included angle between the second alloy drill bits and the axis direction is 0-30 degrees; the top of the second alloy drill bit is provided with second drill teeth, and the second drill teeth are of triangular prism-shaped structures;
a plurality of drill blades which are parallel to each other are arranged on the outer wall of the drill handle along the axis direction, and the tops of the drill blades are connected with the bottoms of the drill wings;
the anchor rod twist drill bit is internally provided with a water distribution cavity penetrating through the drill handle and the hollow interior of the base, and an outlet at the top of the water distribution cavity is arranged on the central axis of the drill wings.
2. An anchor twist drill according to claim 1, wherein a plurality of first drill teeth are provided on the outer side of the drill wings, the drill teeth being of triangular prism configuration.
3. An anchor twist drill according to claim 1, wherein the shank has an outer wall which is provided with a plurality of parallel ridges extending perpendicular to the axis, the ridges being disposed between the cutting edges.
4. A rock bolt twist drill according to claim 1, wherein the outer wall of the blade is provided with a thread.
5. A rock bolt twist drill bit according to claim 1, wherein the second alloy bit has a smaller top diameter than bottom diameter and the outer wall is provided with drill threads.
6. The anchor twist drill according to claim 1, wherein the diameter of the cylindrical surface on the outside of the bottom ends of the plurality of wings is greater than the diameter of the cylindrical surface on the outside of the shank, and the diameter of the shank is greater than the diameter of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920997254.3U CN210127825U (en) | 2019-06-28 | 2019-06-28 | Anchor rod twist drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920997254.3U CN210127825U (en) | 2019-06-28 | 2019-06-28 | Anchor rod twist drill bit |
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| Publication Number | Publication Date |
|---|---|
| CN210127825U true CN210127825U (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920997254.3U Active CN210127825U (en) | 2019-06-28 | 2019-06-28 | Anchor rod twist drill bit |
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| CN (1) | CN210127825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669090A (en) * | 2021-08-23 | 2021-11-19 | 中建八局发展建设有限公司 | Anchor rod construction process |
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2019
- 2019-06-28 CN CN201920997254.3U patent/CN210127825U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669090A (en) * | 2021-08-23 | 2021-11-19 | 中建八局发展建设有限公司 | Anchor rod construction process |
| CN113669090B (en) * | 2021-08-23 | 2023-05-02 | 中建八局发展建设有限公司 | Anchor rod construction process |
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