CN214303699U - Underwater hard rock stratum percussion drill bit - Google Patents
Underwater hard rock stratum percussion drill bit Download PDFInfo
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- CN214303699U CN214303699U CN202022792518.7U CN202022792518U CN214303699U CN 214303699 U CN214303699 U CN 214303699U CN 202022792518 U CN202022792518 U CN 202022792518U CN 214303699 U CN214303699 U CN 214303699U
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Abstract
A kind of underwater hard rock stratum percussion drill bit, it has drill bit body to distribute the rotary wing to bore the tooth at interval, wherein the main tooth is radial, the annular interval sets up in the bottom surface of the drill bit body, including setting up the hammer end to the bottom surface centre of the drill bit body in the outer fringe of bottom surface of the drill bit body and supporting the section that sets up from the hammer end, pass the transition surface natural transition between supporting the section and the hammer end; the rotary wings are arranged on the outer side wall of the drill bit main body in a spiral upward mode, and the drill bit further comprises hammer-shaped drill teeth which are radially and annularly arranged on the bottom surface of the drill bit main body at intervals; the hammer type drill tooth is of a hammer type structure with two wide ends and a narrow middle part, and comprises hammer head ends at the two ends, a hammer body section in the middle and a transition section for connecting the hammer head ends and the hammer body section. The utility model discloses a set up two types on the percussion drill and bore the tooth for implement and strike hard rock pore-forming, restrain and reduced the drill bit and fallen difficult problems such as tooth, fracture, drill bit wearing and tearing, reduced the comprehensive cost that the percussion drill was bored. The method can be widely applied to rock stratum impact construction, and is particularly suitable for underwater hard rock stratum construction.
Description
Technical Field
The utility model relates to a bridge construction field, especially a steel landing stage pile foundation construction equipment that punches a hole.
Background
When crossing large-span bridge engineering construction such as lake, cross the sea, cross the river, the pile foundation construction of bridge is very important, and the progress of pile foundation pore-forming will influence whole construction period, when meetting hard rock formations such as the granite that does not weather under water, the speed and the degree of depth of pile foundation pore-forming will influence the quality of whole bridge construction. The conventional impact method is still used in the ordinary impact drill construction technology, the hole forming speed of an impact drill bit (also called a hammer) is slow when the drill bit meets a hard rock stratum, when the drill bit meets an underwater granite stratum which is not weathered, after the drill bit is impacted for about 6-10 hours, drill teeth on the drill bit are fractured when the drill bit meets the hard rock stratum, or the welded drill bit is cracked due to the increase of impact force, the phenomena of tooth falling, fracture, serious abrasion of the drill bit and the like of the drill bit seriously affect the hole forming speed, the quality of the impact drill bit, the comprehensive cost of the impact drill bit is increased, and the engineering progress is greatly affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an underwater hard rock stratum percussion drill bit, which aims to solve the technical problem that the existing drill bit is easy to be damaged; and the problems of reducing the cost of the impact drill and improving the hole forming efficiency are solved.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an underwater hard rock stratum percussion drill bit, its drill bit main part is gone up interval distribution and is had the rotor and bore the tooth, the rotor bores the tooth and includes main tooth and rotor.
The main teeth are arranged on the bottom surface of the drill bit main body in a radial shape and at intervals in an annular direction and comprise hammer ends arranged on the outer edge of the bottom surface of the drill bit main body and supporting sections arranged from the hammer ends to the center of the bottom surface of the drill bit main body, and the hammer ends and the supporting sections are naturally transited through a transition surface; the rotor wing is arranged on the outer side wall of the drill bit main body in a spiral upward mode, and the longitudinal section of the rotor wing is quadrilateral and naturally transits with the hammer end of the main tooth.
The support section is a rectangular frustum structure with a narrow upper part and a wide lower part, wherein the support surfaces on at least the left side and the right side are inclined surfaces.
The hammer end is of a square block structure, and the top surface of the hammer end is flush with the top surface of the support section.
The number of the rotary wing drilling teeth is 2 to 6.
The rotor screw is 20 to 50 degrees from the drill body.
The drill bit further comprises hammer-type drill teeth; the hammer type drilling teeth are arranged on the bottom surface of the drill bit main body in a radial shape and at intervals in the circumferential direction; the hammer type drill tooth is of a hammer type structure with two wide ends and a narrow middle part, and comprises hammer head ends at the two ends, a hammer body section in the middle and a transition section for connecting the hammer head ends and the hammer body section.
The hammer head end and the hammer body section are both of square block structures, and the top surfaces of the hammer head end and the hammer body section are parallel and level.
The hammer type drill teeth and the rotor drill teeth are equal in height, and the top surfaces of the hammer type drill teeth and the rotor drill teeth are flush.
The hammer type drill teeth and the rotor drill teeth are the same in number and are arranged alternately.
The bottom surface of the drill bit main body is a plane; and a water through hole is formed in the center of the drill bit main body along the longitudinal axis.
Compared with the prior art the utility model has the following characteristics and beneficial effect:
the utility model discloses an impact drill head is provided with two types of drilling teeth for implementing the hard rock impact pore-forming, one type of drilling teeth is hammer type drilling teeth, the other type of drilling teeth is rotor drilling teeth of rotor, the two types of drilling teeth are equal in height and are alternately arranged at intervals; wherein the rotor of the rotor drilling tooth is screwed upwards along the drill bit main body, the screw angle is not more than 50 degrees, and the stress is larger and more stable; the main tooth then includes hammer end and support section, wherein the support section has two slope holding surface at least, let power more focus on the top surface of atress, therefore, rotor and holding surface interact, the effect of supporting and assisting the drill bit to punch a hole has been strengthened, in addition, when punching a hole at hard stratum, rotor and the effectual protection of holding surface bore the tooth, it falls the tooth to restrain and reduced the drill bit, the fracture, difficult problems such as drill bit wearing and tearing, the flow and the time of boring tooth welded after falling the tooth have been reduced, the comprehensive cost of percussion drill has been reduced, pile foundation pore-forming speed and construction progress in the bridge construction have effectively been guaranteed simultaneously.
The utility model discloses but wide application is particularly useful for the construction of hard stratum in the construction is strikeed to the stratum.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the bottom structure of the present invention.
Fig. 3 is a schematic structural view of the rotary wing drilling tooth of the present invention.
Fig. 4 is a schematic structural view of the hammer type drill tooth of the present invention.
Reference numerals: 1-hammer type drilling teeth, 11-hammer end, 12-hammer body section, 13-transition section, 2-rotor drilling teeth, 21-rotor, 22-hammer end, 23-support section, 24-transition surface, 3-drill main body and 4-limber hole.
Detailed Description
Referring to fig. 1, the drill bit for underwater hard rock stratum percussion drill comprises a drill bit body 3, wherein rotary wing drill teeth 2 and hammer type drill teeth 1 are distributed at intervals; the rotary wing drilling teeth 2 comprise main teeth and rotary wings 21, wherein the rotary wings are arranged on the outer side wall of the drill bit body in a spiral upward mode, and the rotary wings are screwed on the drill bit body at 20-50 degrees; the number of the rotor drilling teeth 2 is 2 to 6, in this case 4.
Referring to fig. 2, the main teeth are radially and circumferentially arranged at intervals on the bottom surface of the drill bit body 3, and the hammer type drill teeth 1 are radially and circumferentially arranged at intervals on the bottom surface of the drill bit body 3; the hammer type drill teeth 1 and the rotor drill teeth 2 are the same in number and are alternately arranged; the hammer type drill teeth 1 and the rotor drill teeth 2 are equal in height, and the top surfaces of the hammer type drill teeth and the rotor drill teeth are flush.
Referring to fig. 3, the main tooth comprises a hammer end 22 arranged on the outer edge of the bottom surface of the drill bit body and a support section 23 arranged from the hammer end to the center of the bottom surface of the drill bit body, and the hammer end 22 and the support section 23 are naturally transited through a transition surface 24; the longitudinal section of the rotor wing is quadrilateral and is in natural transition with the hammer end of the main tooth; the supporting section 23 is of a quadrangular frustum pyramid structure with a narrow upper part and a wide lower part, wherein at least the supporting surfaces on the left side and the right side are inclined surfaces; the hammer end 22 is a square block structure, and the top surface of the hammer end is flush with the top surface of the support section 23.
Referring to fig. 4, the hammer-type drill tooth 1 is a hammer-type structure with two wide ends and a narrow middle part, and comprises hammer head ends 11 at the two ends, a hammer body section 12 in the middle part and a transition section 13 connecting the two; the hammer head end 11 and the hammer body section 12 are both square block-shaped structures, and the top surfaces of the hammer head end and the hammer body section are parallel and level.
In this example, the bottom surface of the drill body 3 is a plane; the center of the drill bit main body 3 is provided with a water through hole 4 along the longitudinal axis.
Claims (10)
1. The utility model provides an underwater hard rock stratum percussion drill bit, interval distribution has rotor to bore tooth (2) on its drill bit main part (3), its characterized in that:
the rotor drilling teeth (2) comprise main teeth and rotors (21);
the main teeth are radially and annularly arranged on the bottom surface of the drill bit main body (3) at intervals, and comprise hammer ends (22) arranged on the outer edge of the bottom surface of the drill bit main body and supporting sections (23) arranged from the hammer ends to the center of the bottom surface of the drill bit main body, and the hammer ends (22) and the supporting sections (23) are naturally transited through transition surfaces (24);
the rotor wing is arranged on the outer side wall of the drill bit main body in a spiral upward mode, and the longitudinal section of the rotor wing is quadrilateral and naturally transits with the hammer end of the main tooth.
2. The underwater hard formation percussive drill bit according to claim 1, wherein:
the supporting section (23) is of a quadrangular frustum pyramid structure with a narrow upper part and a wide lower part, wherein at least the supporting surfaces on the left side and the right side are inclined surfaces.
3. The underwater hard formation percussive drill bit according to claim 2, wherein:
the hammer end (22) is of a square block structure, and the top surface of the hammer end is flush with the top surface of the support section (23).
4. The underwater hard formation percussive drill bit according to claim 1, wherein:
the number of the rotary wing drilling teeth (2) is 2-6.
5. The underwater hard formation percussive drill bit according to claim 1, wherein:
the rotor screw is 20 to 50 degrees from the drill body.
6. The underwater hard rock formation percussion drill bit according to any one of claims 1 to 5, characterized in that:
the drill bit further comprises hammer-type drill teeth (1);
the hammer type drilling teeth (1) are radially and annularly arranged on the bottom surface of the drill bit main body (3) at intervals;
the hammer type drill tooth (1) is of a hammer type structure with two wide ends and a narrow middle part, and comprises hammer head ends (11) at the two ends, a hammer body section (12) in the middle and a transition section (13) connecting the hammer head ends and the hammer body section.
7. The underwater hard formation percussive drill bit according to claim 6, wherein:
the hammer head end (11) and the hammer body section (12) are both square block-shaped structures, and the top surfaces of the hammer head end and the hammer body section are parallel and level.
8. The underwater hard formation percussive drill bit according to claim 7, wherein:
the hammer type drill teeth (1) and the rotor drill teeth (2) are equal in height and have flush top surfaces.
9. The underwater hard formation percussion drill bit according to claim 7 or 8, wherein:
the hammer type drill teeth (1) and the rotor drill teeth (2) are same in quantity and are arranged alternately.
10. The underwater hard formation percussive drill bit according to claim 1, wherein:
the bottom surface of the drill bit main body (3) is a plane;
and a water through hole (4) is formed in the center of the drill bit main body (3) along the longitudinal axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022792518.7U CN214303699U (en) | 2020-11-26 | 2020-11-26 | Underwater hard rock stratum percussion drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022792518.7U CN214303699U (en) | 2020-11-26 | 2020-11-26 | Underwater hard rock stratum percussion drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214303699U true CN214303699U (en) | 2021-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022792518.7U Active CN214303699U (en) | 2020-11-26 | 2020-11-26 | Underwater hard rock stratum percussion drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214303699U (en) |
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2020
- 2020-11-26 CN CN202022792518.7U patent/CN214303699U/en active Active
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