CN204457437U - Rich cobble companion rock foundation down-the-hole drill - Google Patents
Rich cobble companion rock foundation down-the-hole drill Download PDFInfo
- Publication number
- CN204457437U CN204457437U CN201520071948.6U CN201520071948U CN204457437U CN 204457437 U CN204457437 U CN 204457437U CN 201520071948 U CN201520071948 U CN 201520071948U CN 204457437 U CN204457437 U CN 204457437U
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- plane
- drill bit
- midplane
- drilling rod
- hole
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Abstract
The utility model discloses a kind of rich cobble companion rock foundation down-the-hole drill, provide a kind of machinery described ground being applicable to down-the-hole operation, the technical measures taked: a kind of rich cobble companion rock foundation down-the-hole drill, comprise caterpillar body, stand and drilling rod, the upper end of stand is provided with the motor with drilling rod driving coupling, the braced structures of hydraulic cylinder type is provided with between body and stand, the bottom of drilling rod is fixed with drill bit, it is characterized in that, the lower surface of drill bit is by outer inclined-plane, interior inclined-plane and midplane are formed, outer inclined-plane is positioned at peripheral position place, midplane is positioned at center position, interior inclined-plane between outer inclined-plane and midplane between the two, outside inclined-plane, interior inclined-plane and midplane are provided with some convex bodys respectively, the outer face of convex body is cambered surface.When carrying out down-the-hole operation, braced structures makes stand vertically on the ground, and drilling rod relies on stand and perpendicular to the ground, and the rotation of motor drives drilling rod to make dive bore operation.
Description
Technical field
The utility model relates to a kind of down-the-hole drill, particularly relates to a kind of rig for carrying out down-the-hole operation to rich cobble companion rock foundation.
Background technology
In building construction process, overriding concern, to the foundation character, then could carry out piling work according to the feature of ground.Before carrying out piling work, need to select suitable down-the-hole drill to carry out, so just can reach the effect of getting twice the result with half the effort.Rich cobble companion rock foundation, due to enrichment cobble, selects common down-the-hole drill to be not too suitable to carry out down-the-hole.Because cobble is present in ground with individual form, when to cobble enrichment ground operation, under powerful the pressure of the drill power effect, the poor stability of the position of cobble own, and when down-the-hole, drill bit also unlikely all smashes these cobbles, and the cobble meeting clamping stagnation of some small volume at drill bit lower surface place, and can have influence on the diving speed of drill bit.And the operating efficiency of down-the-hole drill, depend on the structure of bit face to a great extent.Therefore, select the down-the-hole operation of the drill bit of suitable construction to rich cobble companion rock foundation to be extremely important, and existing common drill bit is all not ideal to the operating efficiency of described ground.
Utility model content
The utility model technical issues that need to address: provide a kind of rich cobble companion rock foundation down-the-hole drill, this down-the-hole drill can realize high-efficient homework to rich cobble companion rock foundation.
For solveing the technical problem, the technical solution of the utility model: a kind of rich cobble companion rock foundation down-the-hole drill, comprise caterpillar body, stand and drilling rod, the upper end of stand is provided with the motor with drilling rod driving coupling, the braced structures of hydraulic cylinder type is provided with between body and stand, the bottom of drilling rod is fixed with drill bit, it is characterized in that, the lower surface of drill bit is made up of outer inclined-plane, interior inclined-plane and midplane, outer inclined-plane is positioned at peripheral position place, midplane is positioned at center position, and interior inclined-plane between outer inclined-plane and midplane between the two; Outside inclined-plane, interior inclined-plane and midplane are provided with some convex bodys respectively, the outer face of convex body is cambered surface.When carrying out down-the-hole operation, braced structures makes stand vertically on the ground, and drilling rod relies on stand and perpendicular to the ground, and the rotation of motor drives drilling rod to make dive bore operation.Convex body set on drill bit lower surface is considered based on enrichment cobble in ground, and the convex body in different aspects, when drill bit dive operation, utilizes the mobility of cobble in ground, stirs cobble respectively or jointly, and pushes cobble open.
On interior inclined-plane, outer inclined-plane, the root size of convex body is greater than the size of this convex body outer end.This is convenient in the interval that these convex bodys are plugged between cobble.
Convex body on interior inclined-plane is perpendicular to interior inclined-plane; Convex body on outer inclined-plane is perpendicular to outer inclined-plane.This makes these convex bodys be in the state of inclination relative to the outer face of drill bit, is convenient on three dimensions, form the system of stirring to cobble, is convenient to change the position of cobble.
Convex body on midplane is spherical.The cobble that domed convex body is convenient to being positioned at drill bit front is rubbed to the outside of drill bit, and cobble is substantially nondestructively moved away position, can effectively reduce the power attenuation of motor.
Described drill bit is arranged on the bottom of drilling rod prejudicially.This drill bit itself namely form volume relatively large stir body, and monolithic is stirred run into cobble, further reduces the power attenuation of motor.
Be provided with some slot scrapings in the side of drill bit, these slot scrapings are arranged along the axis of drill bit, and the truncation surface of slot scraping is curved.These slot scrapings for shoveling the earth scraped in cobble interval, the bonding force between subtracting with pebble.
The outer face of drill bit is provided with three grooves, and these three grooves are arranged along in drill bit radial direction, and the outer inclined-plane of recesses bridge and interior inclined-plane, the root of groove is near midplane, and the bottom surface of root of notch is provided with fixing hole, and fixing hole is arranged along the axis of drill bit.The main purpose arranging groove arranges fixing hole, and by set bolt, to realize between drill bit with drilling rod firm is connected, and the oral area of groove also plays and shovels the effect of scraping to earth.
Compared with prior art, the beneficial effect that the utility model has: owing to being provided with the end face structure of three different aspects on the lower surface of drill bit, this itself is beneficial to drill bit dive, and convex body is provided with in different aspects, thus on the lower surface of drill bit, one can be constructed in three dimensions and stir system efficiently, be convenient to that effects on surface is smooth, the cobble of shape irregularity is stirred, and enable cobble rapid traverse, both improve the efficiency of down-the-hole operation, also can reduce drill bit smashing cobble simultaneously, improve efficiency.The operating efficiency of this down-the-hole drill is high, can adapt to the down-the-hole requirement to rich cobble companion rock foundation well.
Accompanying drawing explanation
Fig. 1 is the structure chart of this rich cobble companion rock foundation down-the-hole drill.
Fig. 2 is the lower surface structure chart of drill bit.
Detailed description of the invention
See in figure, this rig is mainly used for carrying out down-the-hole operation to rich cobble companion rock foundation, and structure comprises body 1, and the following side of body 1 is caterpillar running part 7.Body 1 is provided with the braced structures 2 of hydraulic cylinder type, and braced structures 2 supports for carrying out support to stand 3, and make in the course of the work, stand 3 is in the state perpendicular to ground.Be fixed with motor 4 in the upper end of stand 3, the outside of stand 3 is provided with drilling rod 5, motor 4 and drilling rod 5 driving coupling.Drilling rod 5 is parallel with stand 3, and operationally, drilling rod 5 is also in the state perpendicular to ground, in order to vertical down-the-hole operation.
The bottom of drilling rod 5 is fixed with drill bit 6, and drill bit 6 itself is connected in the bottom of drilling rod 5 prejudicially.
The Shi Youwai inclined-plane, lower surface 9 of drill bit 6, interior inclined-plane 11 and midplane 14 are formed, and interior inclined-plane 11 and outer inclined-plane 9 are obliquely installed relative to the axis of drill bit 6, and midplane 14 is perpendicular to the axis of drill bit 6.Wherein, outer inclined-plane 9 is positioned at the periphery of drill bit 6 lower surface, and midplane 14 is positioned at the center position of drill bit 6 lower surface, and interior inclined-plane 11 is between outer inclined-plane 9 and midplane 14.Outer inclined-plane 9 is different with the angle of inclination of interior inclined-plane 11 on drill bit 6 lower surface, and outer inclined-plane 9 closer to plane, thus defines obvious line of demarcation between the two on interior inclined-plane 11 and outer inclined-plane 9.
Interior inclined-plane 11, outer inclined-plane 9 and midplane 14 are provided with some convex bodys 10, wherein, convex body 10 on interior inclined-plane 11 is perpendicular to interior inclined-plane 11, and the convex body 10 on outer inclined-plane 9 is perpendicular to outer inclined-plane 9, and this makes to define angle between the convex body 10 on interior inclined-plane 11 and the convex body 10 on outer inclined-plane 9.On interior inclined-plane 11, outer inclined-plane 9, the root size of convex body 10 is greater than the size of this convex body 10 outer end, and the outer face of these convex bodys 10 is level and smooth cambered surface.And the convex body 10 on midplane 14 is spherical, the convex body 10 on midplane 14 is isolated two.
Drill bit 6 lower surface is also provided with three grooves 12 radially distributed, and groove 12 is positioned in the radial direction of drill bit 6.Groove 12 is across outer inclined-plane 9 and interior inclined-plane 11, and the root of groove 12 is near midplane 14.The bottom surface of groove 12 root is processed with fixing hole 13, is connected fixing by cross-under bolt in fixing hole 13 and drilling rod 5, and ensures the connectivity robustness between drill bit 6 and drilling rod 5 further.
The lateral surface of drill bit 6 is provided with six slot scrapings 8, and these six slot scrapings 8 are distributed in the circumference of drill bit 6.Slot scraping 8 is arranged along the axis of drill bit 6, and the truncation surface of slot scraping 8 is curved.
Claims (7)
1. a rich cobble companion rock foundation down-the-hole drill, comprise caterpillar body, stand and drilling rod, the upper end of stand is provided with the motor with drilling rod driving coupling, be provided with the braced structures of hydraulic cylinder type between body and stand, the bottom of drilling rod is fixed with drill bit, it is characterized in that, the lower surface of drill bit is made up of outer inclined-plane, interior inclined-plane and midplane, outer inclined-plane is positioned at peripheral position place, and midplane is positioned at center position, and interior inclined-plane between outer inclined-plane and midplane between the two; Outside inclined-plane, interior inclined-plane and midplane are provided with some convex bodys respectively, the outer face of convex body is cambered surface.
2. down-the-hole drill according to claim 1, is characterized in that, on interior inclined-plane, outer inclined-plane, the root size of convex body is greater than the size of this convex body outer end.
3. down-the-hole drill according to claim 2, is characterized in that, the convex body on interior inclined-plane is perpendicular to interior inclined-plane; Convex body on outer inclined-plane is perpendicular to outer inclined-plane.
4. down-the-hole drill according to claim 1, is characterized in that, the convex body on midplane is spherical.
5., according to the arbitrary described down-the-hole drill of Claims 1-4, it is characterized in that, described drill bit is arranged on the bottom of drilling rod prejudicially.
6., according to the arbitrary described down-the-hole drill of Claims 1-4, it is characterized in that, be provided with some slot scrapings in the side of drill bit, these slot scrapings are arranged along the axis of drill bit, and the truncation surface of slot scraping is curved.
7. down-the-hole drill according to claim 6, it is characterized in that, the outer face of drill bit is provided with three grooves, these three grooves are arranged along in drill bit radial direction, the outer inclined-plane of recesses bridge and interior inclined-plane, the root of groove is near midplane, and the bottom surface of root of notch is provided with fixing hole, and fixing hole is arranged along the axis of drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520071948.6U CN204457437U (en) | 2015-02-03 | 2015-02-03 | Rich cobble companion rock foundation down-the-hole drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520071948.6U CN204457437U (en) | 2015-02-03 | 2015-02-03 | Rich cobble companion rock foundation down-the-hole drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204457437U true CN204457437U (en) | 2015-07-08 |
Family
ID=53664339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520071948.6U Expired - Fee Related CN204457437U (en) | 2015-02-03 | 2015-02-03 | Rich cobble companion rock foundation down-the-hole drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204457437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134082A (en) * | 2015-07-24 | 2015-12-09 | 盐城市鑫源铜业有限公司 | Heavy-duty annular drill bit and manufacturing method for same |
-
2015
- 2015-02-03 CN CN201520071948.6U patent/CN204457437U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134082A (en) * | 2015-07-24 | 2015-12-09 | 盐城市鑫源铜业有限公司 | Heavy-duty annular drill bit and manufacturing method for same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20190203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |