CN114165163A - Multifunctional down-the-hole drill bit - Google Patents
Multifunctional down-the-hole drill bit Download PDFInfo
- Publication number
- CN114165163A CN114165163A CN202111503726.3A CN202111503726A CN114165163A CN 114165163 A CN114165163 A CN 114165163A CN 202111503726 A CN202111503726 A CN 202111503726A CN 114165163 A CN114165163 A CN 114165163A
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- China
- Prior art keywords
- drill bit
- hole drill
- fixed base
- width
- fin
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Links
- 238000005553 drilling Methods 0.000 claims abstract description 35
- 239000002689 soil Substances 0.000 abstract description 37
- 239000011435 rock Substances 0.000 abstract description 11
- 238000010276 construction Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/36—Percussion drill bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/36—Percussion drill bits
- E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a multifunctional down-the-hole drill bit, which relates to the technical field of geotechnical engineering mechanical equipment and solves the technical problem that the same down-the-hole drill bit in the prior art can not adapt to two operation stratums of silty soil and hard soil or silty soil and rock, the down-the-hole drill bit comprises a drill rod and a hammer head arranged at the front part of the drill rod, wherein the hammer head comprises a fixed base with a round top surface and a conical fin structure, the width of the bottom edge of the fin structure is 1-1.5 times of the width of the top surface of the fixed base, the wing structure comprises at least two wings which are connected with each other, the included angles between the wings are equal, each wing is in the shape of a right triangle, the top surface of the fixed base and the top of the wing are respectively provided with spherical teeth, each spherical tooth part positioned at the edge of the top surface of the fixed base protrudes out of the fixed base; the multifunctional down-the-hole drill bit has various functions and a wide application range, can cope with two operation stratums, does not need to replace a drilling machine, and has high working efficiency.
Description
Technical Field
The invention relates to the technical field of geotechnical engineering mechanical equipment, in particular to the technical field of down-the-hole drill bits.
Background
Drilling in geotechnical engineering often selects different mechanical equipment according to different stratums. For example, in a silty soil area with lower hardness, a common rotary drilling rig is used for rotary drilling, so that the working efficiency is high, and slag discharging is convenient. However, the common rotary drilling rig has the defects of insufficient power and poor capability of penetrating into hard soil, so that the common rotary drilling rig is not suitable for hard soil areas. Therefore, in hard soil or rock areas with higher hardness, the down-the-hole hammer is selected to be used for percussion drilling, and the advantages of high power and high hard soil drilling efficiency are achieved. However, the down-the-hole hammer head is generally cylindrical, and the end surface of the down-the-hole hammer head is generally convex, planar, concave and end surface deep concave central, so when the down-the-hole hammer encounters silty soil, the impact drilling speed is slow by using the down-the-hole hammer, and the working efficiency is low, so the down-the-hole hammer is not suitable for the operation of the silty soil.
However, in drilling, more complicated geological conditions are actually encountered, for example, in the areas where silty soil and hard soil are alternated or in the areas where silty soil and rock are alternated, the work efficiency is low due to respective defects of pure rotary drilling (cone drill) or impact drilling (plane drill), and therefore, a drilling machine suitable for the stratum needs to be replaced according to the work efficiency. The drilling machine is changed back and forth, the construction progress is influenced, and time and labor are wasted.
Disclosure of Invention
The invention aims to: the invention provides a multifunctional down-the-hole drill bit, aiming at solving the technical problem of drilling a hole in an alternate stratum of silty soil and hard soil or an alternate stratum of silty soil and rock.
The invention specifically adopts the following technical scheme for realizing the purpose:
a multifunctional down-the-hole drill bit. This multi-functional down-the-hole drill bit includes the drilling rod and sets up the anterior tup of drilling rod, its characterized in that, the tup includes that the top is circular shape fixed baseplate and setting and is in the conical fin structure at fixed baseplate top, the base width of fin structure is fixed baseplate top width's 1-1.5 times, the fin structure includes two at least interconnect's fin, the contained angle that the fin is each other equals, space between the fin forms first chip groove, every the shape of fin is right triangle, on the fixed baseplate top surface and fin hypotenuse top is provided with the button hole respectively, and is located each of fixed baseplate top surface edge button hole portion protrusion in fixed baseplate.
Further, the width of the bottom edge of the wing panel structure is 1-1.2 times of the width of the top surface of the fixed base.
Further, the width of the bottom edge of the wing panel structure is consistent with the width of the top surface of the fixed base.
Further, the conicity of the wing structure is 1:1-1: 1.1.
Further, the fin structure comprises three fins connected with each other, and the included angle between the three fins is 120 degrees.
Further, the spherical teeth arranged on the wing pieces are arranged in a staggered mode.
Furthermore, each button at the edge of the top surface of the fixed base protrudes from the fixed base by 1/3-1/2 of the volume of the fixed base.
Further, the button is made of cemented carbide.
Furthermore, a second chip removal groove is formed in the periphery of the fixed base.
The invention has the following beneficial effects:
(1) the down-the-hole drill bit is provided with the fixed base and the wing structures, has multiple functions and wide application range, can deal with two operation strata of silty soil and hard soil or silty soil and rock, does not need to replace a drilling machine, and has high working efficiency;
(2) the width of the bottom edge of the wing panel structure is greater than or equal to the width of the top surface of the fixed base, so that the two functions can be played in a coordinated manner;
(3) the included angles of the wing pieces are equal, so that the wing piece structure is stressed uniformly;
(4) the down-the-hole drill bit is provided with the spherical teeth, and the spherical teeth are in point contact to break cuttings, so that the contact area with a hard soil layer or a rock layer is effectively reduced, and the drilling capability is enhanced;
(5) because each spherical tooth part positioned at the edge of the top surface of the fixed base protrudes out of the fixed base, the down-the-hole drill bit not only can impact and crush the soil body longitudinally, but also can generate transverse acting force on the soil body on the side wall of a drilled hole, so that the drilling process is smoother;
(6) because the first chip groove with a large area is formed between the two adjacent fins, broken stones or soil slag can be smoothly discharged out of the hole, and the influence on the drilling progress due to blockage is avoided.
Drawings
FIG. 1 is a schematic representation of the construction of a multi-function down-the-hole drill bit of the present invention;
FIG. 2 is a top view of a multi-function down-the-hole drill bit of the present invention;
FIG. 3 is a schematic view of the configuration of the airfoil of a multi-function down-the-hole drill bit of the present invention;
FIG. 4 is a schematic representation of yet another configuration of a multi-function down-the-hole drill bit of the present invention;
FIG. 5 is a further top view of a multi-function down-the-hole drill bit of the present invention;
FIG. 6 is a schematic view of yet another configuration of a multi-function down-the-hole drill bit of the present invention;
FIG. 7 is yet another top view of a multi-function down-the-hole drill bit of the present invention;
reference numerals: 1-a drill rod; 2-fixing the base; 3-a fin; 4-a first flute; 5-ball teeth; 6-second chip groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 to 7, the present embodiment provides a multifunctional down-the-hole drill. This down-the-hole drill bit includes drilling rod 1 and sets up the tup at drilling rod 1 front portion, and wherein, the tup includes that the top is circular shape fixed baseplate 2 and sets up the conical fin structure at 2 tops of fixed baseplate, the base width of fin structure is fixed baseplate top face width's 1-1.5 times, and the fin structure includes two at least interconnect's fin 3, and the contained angle that fin 3 was each other equals, and the space between the fin 3 forms first chip groove 4, and the shape of every fin 3 is right triangle, is provided with ball tooth 5 on the 2 top surfaces of fixed baseplate and the 3 tops of fin respectively, and is located 2 top surfaces of fixed baseplate edges of each ball tooth 5 part protrusion in fixed baseplate 2.
By adopting the technical scheme, the down-the-hole drill bit is suitable for drilling operation on alternate stratum of silty soil and hard soil or alternate stratum of silty soil and rock in the rock and soil construction process. When a hard soil layer or a rock layer is drilled, the down-the-hole drill bit can be used for directly impacting and crushing, the power is large, and the drilling efficiency of hard soil is high; and the spherical teeth 5 are subjected to chip crushing through point contact, so that the contact area with a hard soil layer or a rock layer is effectively reduced, and the drilling capability is enhanced. When the hard soil or the rock is beaten and enters the silty soil, the down-the-hole drill bit can be used for rotary drilling, and the conical fin structure is additionally arranged on the cylindrical hammer head, so that the contact area between the head and the silty soil can be reduced, the drilling resistance is reduced, and the drilling efficiency is improved. Therefore, the down-the-hole drill bit has various functions and a wide application range, can be applied to different operation stratums, and does not need to replace a drilling machine. In addition, since the first chip grooves 4 having a large area are formed between the adjacent fins 3, it is possible to smoothly discharge crushed stones or earth waste to the outside.
Example 2
On the basis of the embodiment 1, the structure of the wing piece is further optimized. In this embodiment, the width of the bottom edge of the wing structure is preferably 1-1.2 times the width of the top surface of the fixed base 2. More preferably, the width of the bottom edge of the wing structure is consistent with the width of the top surface of the fixed base 2, so that the wing structure and the fixed base 2 are in smooth transition, the stress is dispersed, and the wing structure is not stressed excessively. The conicity of the wing structure is 1:1-1:1.1, if the conicity is greater than 1:1.1, the drilling resistance of the down-the-hole drill in the silty soil stratum is increased, and the drilling efficiency is reduced; if the taper is less than 1:1, the width of the hammer head is not enough, and the hammering and crushing capability on the hard soil stratum is influenced.
Example 3
The fin structure of the present invention comprises at least two fins 3 connected to each other, and may be, for example, two, three, four, five, etc. Preferably, as shown in fig. 1 and 2, the fin structure comprises three fins 3 connected to each other, the three fins being at an angle of 120 ° to each other, the three fins 3 being supported to each other to form a stable structure.
Example 4
On the basis of embodiment 1, the button 5 is further optimized. In this embodiment, as shown in fig. 4 and 5, the spherical teeth 5 disposed on the three fins 3 are arranged in a staggered manner, so that the stress is dispersed, the cutting resistance is reduced, and the cutting efficiency is high. Further, the button 5 is made of cemented carbide, which improves wear resistance and hardness. Further, as shown in fig. 2, 5 and 7, the volume of the button 5 protruding from the fixed base 2 at the outer edge of the top of the fixed base 2 is 1/3-1/2, which ensures the stable combination between the button 5 and the fixed base 2 and ensures the better drilling function of the button 5.
Example 5
In example 1, the thickness of the fixing base 2 is 1 to 4cm, and the cross-sectional shape is circular.
As shown in fig. 6 and 7, the fixed base 2 has a second chip groove 6 formed on the outer periphery thereof, and the second chip groove is engaged with the first chip groove 4 to smoothly discharge the crushed stones or the soil out of the hole. When the width of the bottom edge of the wing panel structure is consistent with the width of the top surface of the fixed base 2, the broken stones or the soil slag discharged from the first chip discharge groove 4 can enter the second chip discharge groove 6 more smoothly, and the discharge effect is better.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and shall be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a multi-functional down-the-hole drill bit, is in including drilling rod and setting the anterior tup of drilling rod, a serial communication port, the tup includes that the top is circular shape fixed baseplate and setting up the conical fin structure at fixed baseplate top, the base width of fin structure is fixed baseplate top width's 1-1.5 times, the fin structure includes two at least interconnect's fin, the contained angle that the fin is each other equals, space between the fin forms first chip groove, every the shape of fin is right angled triangle, on the fixed baseplate top surface with the fin top is provided with the button hole respectively, and is located each of fixed baseplate top surface edge button hole portion protrusion in fixed baseplate.
2. A multi-function down-the-hole drill bit as claimed in claim 1, wherein the width of the bottom edge of the fin structure is 1-1.2 times the width of the top surface of the fixed base.
3. A multi-function down-the-hole drill bit as defined in claim 2, wherein said fin structure has a bottom width corresponding to a top width of said fixed base.
4. The multi-functional down-the-hole drill bit of claim 1, wherein the taper of the fin structure is 1:1 to 1: 1.1.
5. A multi-function down-the-hole drill bit as claimed in claim 1, wherein the fin structure comprises three interconnected fins, the three fins being angled at 120 ° to each other.
6. A multi-function down-the-hole drill bit as defined in claim 1, wherein said buttons provided on said wing are offset.
7. The multi-function down-the-hole drill bit of claim 1, wherein the volume of each button at the top surface edge of the fixed base that protrudes from the fixed base is 1/3-1/2 of its own volume.
8. A multi-function down-the-hole drill bit as recited in claim 1, wherein the buttons are made of cemented carbide.
9. The multi-functional down-the-hole drill bit of claim 1, wherein the fixed base has a second flute formed on an outer periphery thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111503726.3A CN114165163A (en) | 2021-12-09 | 2021-12-09 | Multifunctional down-the-hole drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111503726.3A CN114165163A (en) | 2021-12-09 | 2021-12-09 | Multifunctional down-the-hole drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114165163A true CN114165163A (en) | 2022-03-11 |
Family
ID=80485170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111503726.3A Pending CN114165163A (en) | 2021-12-09 | 2021-12-09 | Multifunctional down-the-hole drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114165163A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB273134A (en) * | 1926-10-25 | 1927-06-30 | Arthur Allan Coaton | Rock drill bit |
| CN204899781U (en) * | 2015-09-10 | 2015-12-23 | 贵州中钻机械设备有限公司 | Three wings down --hold drill bit |
| CN105569563A (en) * | 2015-12-31 | 2016-05-11 | 长安大学 | Rotary drilling rig bit capable of impact drilling |
| CN205259935U (en) * | 2015-12-31 | 2016-05-25 | 长安大学 | Drill bit is dug soon to impacted style |
| CN205823164U (en) * | 2016-04-26 | 2016-12-21 | 浙江普兰卡钎具有限公司 | A kind of down-the-hold drill bit |
-
2021
- 2021-12-09 CN CN202111503726.3A patent/CN114165163A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB273134A (en) * | 1926-10-25 | 1927-06-30 | Arthur Allan Coaton | Rock drill bit |
| CN204899781U (en) * | 2015-09-10 | 2015-12-23 | 贵州中钻机械设备有限公司 | Three wings down --hold drill bit |
| CN105569563A (en) * | 2015-12-31 | 2016-05-11 | 长安大学 | Rotary drilling rig bit capable of impact drilling |
| CN205259935U (en) * | 2015-12-31 | 2016-05-25 | 长安大学 | Drill bit is dug soon to impacted style |
| CN205823164U (en) * | 2016-04-26 | 2016-12-21 | 浙江普兰卡钎具有限公司 | A kind of down-the-hold drill bit |
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