CN211008459U - High-efficient down-the-hole hammer drill bit - Google Patents
High-efficient down-the-hole hammer drill bit Download PDFInfo
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- CN211008459U CN211008459U CN201921829518.0U CN201921829518U CN211008459U CN 211008459 U CN211008459 U CN 211008459U CN 201921829518 U CN201921829518 U CN 201921829518U CN 211008459 U CN211008459 U CN 211008459U
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Abstract
The utility model belongs to the field of geological drilling engineering and particularly relates to a high-efficiency down-the-hole hammer drill bit which comprises a connecting part, a first impact part and a second impact part which are connected in sequence, wherein the second impact part is in a conical shape with a downward pointed end; the connecting part is used for connecting the hammer body; the second strikes the portion and is equipped with a plurality of impact particles and many main slag discharge grooves, many on the main slag discharge groove extends to the lateral wall of first impact portion to the circumferential edge direction of second impact portion from the center that is close to second impact portion bottom, the top of first impact portion is located to the one end that second impact portion was kept away from to main slag discharge groove, the main slag discharge inslot is equipped with the high-pressure gas pocket of intercommunication connecting portion upper surface, the high-pressure gas pocket is followed supreme second impact portion, first impact portion and the connecting portion of running through in proper order down. The utility model discloses a drill bit has the efficient advantage of creeping into.
Description
Technical Field
The utility model relates to a geological drilling engineering field, concretely relates to high-efficient down-the-hole hammer drill bit.
Background
In the drilling construction of the cast-in-place pile hard rock, the large-diameter down-the-hole hammer is increasingly applied to cast-in-place pile hard rock drilling projects due to high rock breaking efficiency and high drilling speed. The drill bits used for drilling the hole by the down-the-hole hammer are generally a single flat-bottom down-the-hole hammer drill bit and a cluster down-the-hole hammer drill bit, the down-the-hole hammer drill bit is driven by high wind pressure, and the down-the-hole hammer drill bit is impacted at high speed for drilling, and is mostly used for the construction of cast-in-place piles with the diameter of 800 mm-1200 mm.
For the bored pile with the hard rock strength of more than 80MPa or uneven hardness of the rock or larger thickness of the hard rock, the commonly used single flat-bottom down-the-hole hammer drill bit and the cluster down-the-hole hammer can be greatly abraded during drilling, and some hammer teeth are broken off, the hammer head is broken, even the hammer is broken, so that the hammer cannot be used, and the drilling efficiency is low and the construction cost is high.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides a high-efficient down-the-hole hammer drill bit has the efficient advantage of creeping into.
The utility model provides a technical scheme that its technical problem adopted is:
a high-efficiency down-the-hole hammer drill bit comprises a connecting part, a first impact part and a second impact part which are sequentially connected, wherein the second impact part is conical with a downward pointed end; the connecting part is used for connecting the hammer body; the second strikes the portion and is equipped with a plurality of impact particles and many main slag discharge grooves, many on the main slag discharge groove extends to the lateral wall of first impact portion to the circumferential edge direction of second impact portion from the center that is close to second impact portion bottom, the top of first impact portion is located to the one end that second impact portion was kept away from to main slag discharge groove, the main slag discharge inslot is equipped with the high-pressure gas pocket of intercommunication connecting portion upper surface, the high-pressure gas pocket is followed supreme second impact portion, first impact portion and the connecting portion of running through in proper order down.
Furthermore, an auxiliary slag discharge groove is formed between every two adjacent main slag discharge grooves, and the auxiliary slag discharge grooves are vertically arranged on the side wall of the first impact part and communicated with the upper end and the lower end of the first impact part.
Further, a plurality of the impact particles are uniformly disposed on the second impact portion.
Further, the high-pressure air hole is formed in one side close to the center of the second impact portion.
Further, be equipped with first guide part between second impact portion and the first impact portion, first guide part is the less round platform type of lower extreme diameter, the main slag discharging groove sets up along the lateral wall of first impact portion, the lateral wall of first guide part and the lateral wall of second impact portion in proper order, the lower extreme of vice slag discharging groove is downward along the junction to first guide part and second impact portion.
Further, first impact portion upper end is equipped with the second guide part, the second guide part is the less round platform type of upper end diameter, the upper end of main scum groove upwards extends to the upper end of second guide part along the lateral wall of second guide part, the upper end of vice scum groove upwards extends to the upper end of second guide part along the lateral wall of second guide part.
Further, the lower extreme of connecting portion is equipped with first joint portion, follows first joint portion circumference is seted up many and is used for with hammer body joint complex vertical first joint groove, first joint groove upper end opening sets up.
Furthermore, the circumferential edge of the upper end surface of the first clamping part is inclined downwards.
Further, the upper end of connecting portion is equipped with second joint portion, follows many vertical second joint grooves have been seted up to second joint portion circumference, the equal opening setting of lower extreme on the second joint groove.
Further, the diameter of second joint portion is greater than the diameter of connecting portion, the circumference outer wall of the lower terminal surface outstanding connecting portion of second joint portion forms the butt face.
The utility model has the advantages that:
adopt the utility model discloses a when the down-the-hole hammer drill bit drills, because the lower extreme of drill bit is equipped with conical second impact portion, conical pointed end is favorable to carrying out the breakage to hard rock and the inhomogeneous rock of soft or hard degree, not only can reduce the drill bit and just improve crushing efficiency at the wearing and tearing of the in-process of drilling, and then reach the purpose that improves and creep into efficiency, and conical second impact portion when creeping into, broken sand and soil can be along conical second impact portion to the motion of drill bit upper portion, avoid downthehole sand and soil to pile up and influence the efficiency of creeping into of drill bit. The utility model discloses a second impact portion of down-the-hole hammer drill bit still is equipped with a plurality of impact particles, a plurality of impact particles can further improve the crushing efficiency of non-rock at the drill bit drilling in-process, through setting up many main scum groove and set up the high-pressure gas pocket of intercommunication connecting portion upper end in main scum groove, make the drill bit at the in-process that creeps into, downthehole sand and soil can move to drill bit upper portion along main scum groove under the effect of the high pressure gas that high-pressure gas pocket blew off, make things convenient for the staff to clean downthehole sand and soil, and be favorable to improving the drilling efficiency of drill bit.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a bottom view of an embodiment of the present invention;
fig. 3 is a schematic structural view of the hammer body assembled with the present invention.
Description of reference numerals: 1. a connecting portion; 11. a first clamping part; 12. a second clamping part; 13. a first clamping groove; 14. a second clamping groove; 15. an abutting surface; 2. a first impact portion; 3. a second impact portion; 31. impacting the particles; 32. a main slag discharge groove; 33. a secondary slag discharge groove; 4. a hammer body; 5. high-pressure air holes; 6. a first guide portion; 7. a second guide portion.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. The utility model discloses each technical feature in the creation can the interactive combination under the prerequisite that does not contradict conflict each other.
A high-efficiency down-the-hole hammer drill bit comprises a connecting part 1, a first impact part 2 and a second impact part 3 which are sequentially connected, wherein the second impact part 3 is conical with the tip downwards, as shown in figures 1-3. The connecting part 1 is used for connecting with a hammer body 4. Second impact portion 3 is equipped with a plurality of impact particles 31 and many main slag discharge groove 32, many main slag discharge groove 32 extends to the lateral wall of first impact portion 2 from the center that is close to second impact portion 3 bottom to the circumferential edge direction of second impact portion 3, the top of first impact portion 2 is located to the one end that second impact portion 3 was kept away from to main slag discharge groove 32, be equipped with the high pressure gas pocket 5 of the 1 upper surface of intercommunication connecting portion in the main slag discharge groove 32, supreme second impact portion 3, first impact portion 2 and the connecting portion 1 of running through in proper order are followed to high pressure gas pocket 5.
Adopt the utility model discloses a when the down-the-hole hammer drill bit drills, because the lower extreme of drill bit is equipped with conical second impulse portion 3, conical most advanced is favorable to carrying out the breakage to hard rock and the inhomogeneous rock of soft or hard degree, not only can reduce the drill bit and just improve crushing efficiency in the wearing and tearing of the in-process of drilling, and then reach the purpose that improves and creep into efficiency, and conical second impulse portion 3 is when creeping into, broken sand and soil can be followed 3 motions to drill bit upper portion of conical second impulse portion, avoid downthehole sand and soil to pile up and influence the efficiency of creeping into of drill bit. The utility model discloses a second impact portion 3 of down-the-hole hammer drill bit still is equipped with a plurality of impact particles 31, a plurality of impact particles 31 can further improve the crushing efficiency of rock at the drill bit in-process of drilling, through setting up many main scum groove 32 and set up the high pressure gas pocket 5 of the 1 upper end of intercommunication connecting portion in main scum groove 32, make the drill bit at the in-process that creeps into, downthehole sand and soil can move to drill bit upper portion along main scum groove 32 under the effect of the high pressure gas that high pressure gas pocket 5 blew out, make things convenient for the staff to clean downthehole sand and soil, and be favorable to improving the efficiency of creeping into of drill bit.
Specifically, a plurality of impact particles 31 are uniformly arranged on the second impact portion 3, and the impact force of each portion of the drill bit is uniform by the uniformly arranged impact particles 31, so that the drilling efficiency of the drill bit is improved, and the stress of each portion of the second impact portion 3 is uniform when the drill bit drills, so that the drill bit is not inclined easily in the drilling process.
Furthermore, in order to furthest discharge sand in the hole out of the hole, the high-pressure air hole 5 is formed in one side close to the center of the second impact part 3, so that the sand in the middle of the hole can be pushed by high-pressure air, the sand can be discharged out of the hole as soon as possible, and the sand accumulation in the center of the hole is avoided from influencing the drilling efficiency of the drill bit.
Further, in order to facilitate the sand and soil discharge hole between two adjacent main slag discharge grooves 32, two adjacent main slag discharge grooves 32 are provided with an auxiliary slag discharge groove 33, the auxiliary slag discharge groove 33 is vertically arranged on the side wall of the first impact part 2 and communicated with the upper end and the lower end of the first impact part 2, so that the soil discharge efficiency is improved, and the drill bit is convenient to drill.
Further, be equipped with first guide part 6 between second impact portion 3 and the first impact portion 2, first guide part 6 is the less round platform type of lower extreme diameter, main scum groove 32 sets up along the lateral wall of first impact portion 2, the lateral wall of first guide part 6 and the lateral wall of second impact portion 3 in proper order, the lower extreme of vice scum groove 33 is downwards along the junction to first guide part 6 and second impact portion 3, and the sand that is convenient for to be located second impact portion 3 department gets into fast in the main scum groove 32 and the vice scum groove 33 that are located first impact portion 2 department, improves the discharge rate of sand and soil, reduces downthehole sand and soil to the power and the frictional force that block of drill bit, improves the drilling efficiency of drill bit.
Further, first impact portion 2 upper end is equipped with second guide part 7, second guide part 7 is the circular platform type that the upper end diameter is less, the upper end of main scum groove 32 upwards extends to the upper end of second guide part 7 along the lateral wall of second guide part 7, the upper end of vice scum groove 33 upwards extends to the upper end of second guide part 7 along the lateral wall of second guide part 7. The arrangement of the second guide part 7 is convenient for moving the sandy soil in the main slag discharging groove 32 and the sandy soil in the auxiliary slag discharging groove 33 to the center of the top of the drill bit, so that the situation that the sandy soil flows into the lower part of the drill bit along the gap between the drill bit and the hole side wall again to influence the drilling efficiency is reduced, and the drilling efficiency is improved.
Further, the lower extreme of connecting portion 1 is equipped with first joint portion 11, follows 11 circumference of first joint portion have been seted up many and have been used for with 4 joint complex vertical first joint grooves 13 of hammer block, 13 upper end openings in first joint grooves set up.
Specifically, hammer body 4 is the inside hollow tubulose, hammer body 4 lower extreme inner wall be equipped with first draw-in groove joint complex many first fixture blocks (not mark in the picture), connect through the joint cooperation of a plurality of first fixture blocks and draw-in groove, simple structure, and 13 upper end openings in first joint groove set up be convenient for insert first draw-in groove with the first fixture block of hammer body 4 in, improve the installation effectiveness.
Further, in the convenience is inserted first draw-in groove with first fixture block, the circumferential edge reason downward sloping of 11 up end of first joint portion plays the guide effect to hammer body 4, is favorable to improving the installation effectiveness.
In order to further improve the joint strength of hammer body 4 and drill bit, the upper end of connecting portion 1 is equipped with second joint portion 12, follows many vertical second joint grooves 14 have been seted up to second joint portion 12 circumference, the equal opening setting of lower extreme on second joint groove 14.
In order to avoid the separation of the drill bit from the hammer body 4 in the drilling process, the diameter of the second clamping portion 12 is larger than that of the connecting portion 1, and the lower end face of the second clamping portion 12 protrudes out of the circumferential outer wall of the connecting portion 1 to form an abutting face 15.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (10)
1. A high-efficient down-the-hole hammer drill bit which characterized in that: the device comprises a connecting part, a first impact part and a second impact part which are sequentially connected, wherein the second impact part is conical with a downward tip; the connecting part is used for connecting the hammer body; the second strikes the portion and is equipped with a plurality of impact particles and many main slag discharge grooves, many on the main slag discharge groove extends to the lateral wall of first impact portion to the circumferential edge direction of second impact portion from the center that is close to second impact portion bottom, the top of first impact portion is located to the one end that second impact portion was kept away from to main slag discharge groove, the main slag discharge inslot is equipped with the high-pressure gas pocket of intercommunication connecting portion upper surface, the high-pressure gas pocket is followed supreme second impact portion, first impact portion and the connecting portion of running through in proper order down.
2. A high efficiency down-the-hole hammer bit as set forth in claim 1, wherein: and an auxiliary slag discharge groove is formed between every two adjacent main slag discharge grooves and is vertically arranged on the side wall of the first impact part and communicated with the upper end and the lower end of the first impact part.
3. A high efficiency down-the-hole hammer bit as set forth in claim 1, wherein: the plurality of impact particles are uniformly arranged on the second impact part.
4. A high efficiency down-the-hole hammer bit as set forth in claim 1, wherein: the high-pressure air hole is formed in one side close to the center of the second impact part.
5. A high efficiency down-the-hole hammer bit as set forth in claim 2, wherein: be equipped with first guide part between second impact portion and the first impact portion, first guide part is the less round platform type of lower extreme diameter, the main slag discharging groove sets up along the lateral wall of first impact portion, the lateral wall of first guide part and the lateral wall of second impact portion in proper order, the lower extreme downwardly extending of vice slag discharging groove strikes the junction of portion to first guide part and second.
6. A high efficiency down-the-hole hammer bit as set forth in claim 2, wherein: first impact portion upper end is equipped with the second guide part, the second guide part is the less round platform type of upper end diameter, the upper end of main scum groove upwards extends to the upper end of second guide part along the lateral wall of second guide part, the upper end of vice scum groove upwards extends to the upper end of second guide part along the lateral wall of second guide part.
7. A high efficiency down-the-hole hammer bit as set forth in claim 1, wherein: the lower extreme of connecting portion is equipped with first joint portion, follows first joint portion circumference is seted up many and is used for with hammer body joint complex vertical first joint groove, first joint groove upper end opening sets up.
8. A high efficiency down-the-hole hammer bit according to claim 7, wherein: the circumferential edge of the upper end face of the first clamping portion inclines downwards.
9. A high efficiency down-the-hole hammer bit as set forth in claim 1, wherein: the upper end of connecting portion is equipped with second joint portion, follows many vertical second joint grooves have been seted up to second joint portion circumference, the equal opening setting of lower extreme on the second joint groove.
10. A high efficiency down-the-hole hammer bit according to claim 9, wherein: the diameter of second joint portion is greater than the diameter of connecting portion, the circumference outer wall of the lower terminal surface outstanding connecting portion of second joint portion forms the butt face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921829518.0U CN211008459U (en) | 2019-10-28 | 2019-10-28 | High-efficient down-the-hole hammer drill bit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921829518.0U CN211008459U (en) | 2019-10-28 | 2019-10-28 | High-efficient down-the-hole hammer drill bit |
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| Publication Number | Publication Date |
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| CN211008459U true CN211008459U (en) | 2020-07-14 |
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| CN201921829518.0U Active CN211008459U (en) | 2019-10-28 | 2019-10-28 | High-efficient down-the-hole hammer drill bit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983274A (en) * | 2021-03-09 | 2021-06-18 | 中国石油大学(华东) | Rotary guide type two-stage down-the-hole hammer drill |
-
2019
- 2019-10-28 CN CN201921829518.0U patent/CN211008459U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983274A (en) * | 2021-03-09 | 2021-06-18 | 中国石油大学(华东) | Rotary guide type two-stage down-the-hole hammer drill |
| CN112983274B (en) * | 2021-03-09 | 2023-03-14 | 中国石油大学(华东) | Rotary guide type two-stage down-the-hole hammer drill |
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