CN220769367U - Drilling device for high-pressure jet grouting pile - Google Patents
Drilling device for high-pressure jet grouting pile Download PDFInfo
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- CN220769367U CN220769367U CN202322596993.0U CN202322596993U CN220769367U CN 220769367 U CN220769367 U CN 220769367U CN 202322596993 U CN202322596993 U CN 202322596993U CN 220769367 U CN220769367 U CN 220769367U
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- bit
- drill bit
- connecting support
- fixed base
- pilot
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- 238000005553 drilling Methods 0.000 title claims abstract description 34
- 239000002002 slurry Substances 0.000 claims abstract description 21
- 239000007921 spray Substances 0.000 claims abstract description 15
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 239000002131 composite material Substances 0.000 claims description 8
- 230000036346 tooth eruption Effects 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000002689 soil Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model provides a drilling device of a high-pressure jet grouting pile, which comprises a fixed base, a main drill bit, a connecting support, a first pilot drill bit and a second pilot drill bit, wherein a first slurry spraying channel is formed in the fixed base; the main drill bit is arranged on the fixed base and comprises at least two drill wings; the connecting support is connected to the fixed base and arranged between the two drilling wings, and a second guniting channel is formed in the connecting support; the first pilot drill bit is arranged at one end part of the connecting support, which is far away from the fixed base, the front end of the first pilot drill bit is provided with a spray head, the spray head is sunken on the surface of the first pilot drill bit, and the spray head is communicated with the first slurry spraying channel through the second slurry spraying channel; the second pilot bit is arranged on the connecting support and between the first pilot bit and the main bit, the outer diameter of the first pilot bit is smaller than that of the second pilot bit, and the outer diameter of the second pilot bit is smaller than that of the main bit; the utility model can protect the spray head, prevent blockage and accelerate the drilling speed.
Description
Technical Field
The utility model relates to the field of high-pressure jet grouting pile construction equipment, in particular to a drilling device for a high-pressure jet grouting pile.
Background
In the construction process of the outdoor sport places at present, the field geology is mostly large-area deep backfill areas, the foundation bearing is poor, and foundation treatment is generally needed. The high pressure injection grouting method is a common foundation treatment method, and is characterized in that a drilling machine is used for drilling, a grouting pipe with a nozzle is inserted to a preset position of a soil layer, high pressure equipment is used for enabling slurry to be high pressure jet flow of more than 20Mpa, and the high pressure jet flow is ejected from the nozzle to impact and destroy soil. Part of fine soil material is pulled out of the water surface along with the slurry, and the rest soil particles are stirred and mixed with the slurry under the actions of impact force, centrifugal force, gravity and the like of jet flow and are regularly rearranged according to a certain slurry soil proportion. After the slurry is solidified, a consolidated body is formed in the soil and forms a composite foundation together with the soil between piles, so that the bearing capacity of the foundation is improved, the deformation of the foundation is reduced, and the purpose of reinforcing the foundation is achieved.
The existing drilling device is serious in abrasion in the drilling process, drilling is difficult and easy to cause blockage, once blockage occurs, the existing drilling device needs to be replaced in time, a great deal of time is wasted in frequent shutdown replacement, and construction efficiency is seriously affected. In addition, the pile foundation is re-sprayed after each blockage, so that the pile foundation is easy to be uneven, the bearing capacity is reduced, and the material is seriously wasted along the edge, thereby being not beneficial to saving the cost.
Disclosure of Invention
The utility model aims to provide a drilling device of a high-pressure jet grouting pile, which can protect a spray head, prevent blockage and accelerate the drilling speed.
In order to achieve the above purpose, the drilling device of the high-pressure jet grouting pile provided by the utility model comprises a fixed base, a main drill bit, a connecting support, a first pilot drill bit and a second pilot drill bit, wherein a first grouting channel is formed in the fixed base; the main drill bit is arranged on the fixed base and comprises at least two drill wings which are arranged along the circumferential direction of the fixed base; the connecting support is connected to the fixed base and arranged between all the drilling wings, and a second guniting channel is formed in the connecting support; the first pilot drill bit is arranged at one end part of the connecting support, which is far away from the fixed base, the front end of the first pilot drill bit is provided with a spray head, the spray head is sunken on the surface of the first pilot drill bit, and the spray head is communicated with the first slurry spraying channel through the second slurry spraying channel; the second leading bit is arranged on the connecting support and between the first leading bit and the main bit, the first leading bit and the second leading bit are arranged along the axial direction of the connecting support, the outer diameter of the first leading bit is smaller than that of the second leading bit, and the outer diameter of the second leading bit is smaller than that of the main bit.
According to the technical scheme, the first leading drill bit is arranged, so that the pioneer drilling effect can be achieved, the stress area of the leading drill bit is small, the defect of difficulty in drilling of the existing drill bit can be overcome, and the drill speed can be increased; the second pilot bit is arranged for reaming the hole drilled by the first pilot bit, so that the drilling speed is further accelerated; through setting up the concave surface in first leading drill bit of shower nozzle, can play the effect of protection shower nozzle, prevent that the shower nozzle from appearing blocking phenomenon, reduce the condition emergence of shutting down the change drill bit, be favorable to improving work efficiency.
The first pilot bit comprises at least two first protruding parts which are arranged along the circumferential direction of the connecting support, and each first protruding part is provided with a first bit; a groove is formed between the two first protruding parts, a gap is formed between the two adjacent first protruding parts, the gap is communicated with the inner side and the outer side of the groove, and the spray head is arranged in the groove.
According to the scheme, at least two first protruding parts are arranged, and the first drill bit is arranged on the first protruding parts, so that the foundation is conveniently pre-drilled, and a front drilling effect is achieved; the spray head is arranged in the groove, so that the spray head can be effectively protected and prevented from being blocked; through setting up the gap, shower nozzle spun thick liquid both can be followed the opening part blowout of recess, can follow the gap blowout all around again, is favorable to improving the spin efficiency of thick liquid.
The second pilot drill bit is provided with at least three second convex parts, the number of the second convex parts is more than that of the first convex parts, and each second convex part is provided with a second drill bit; the second drill bit is positioned outside the first drill bit on the radial projection surface of the connecting support.
According to the scheme, through the arrangement of the at least three second protruding parts, the hole reaming operation can be performed on the hole drilled by the first leading bit in advance before the main bit performs the drilling operation, and the quick drilling operation of the main bit is facilitated.
The further scheme is that the number of the drill wings is four, the four drill wings are uniformly arranged at intervals, at least two composite cutting teeth are arranged on each drill wing, and the two composite cutting teeth are arranged along the radial direction of the fixed base.
Further scheme is, is formed with between the same end of four brill wings and holds the chamber, and the connection support sets up in holding the intracavity, and the diapire of connection support closely laminates with the diapire that holds the chamber, and the perisporium of connection support is adjacent with the perisporium that holds the chamber.
By the scheme, through setting up the diapire of connecting the support and holding the diapire in chamber and closely laminating, be favorable to avoiding in the drilling process, earth gets into inside the drill bit.
Drawings
Fig. 1 is a block diagram of an embodiment of the present utility model.
Fig. 2 is a block diagram of a fixed base and a main bit in an embodiment of the present utility model.
Fig. 3 is a block diagram of a first pilot bit and a second pilot bit in an embodiment of the utility model.
The utility model is further described below with reference to the drawings and examples.
Detailed Description
Referring to fig. 1 to 3, the drilling device for a high-pressure jet grouting pile provided in the present embodiment includes a fixed base 1, a main drill bit 2, a connection support 3, a first pilot drill bit 4 and a second pilot drill bit 5.
The fixed base 1 is cylindrical, the lower part of the fixed base 1 is connected with a drilling machine, and the upper part of the fixed base 1 is used for being connected with the main drill bit 2. A first guniting channel 11 is axially extended in the fixed base 1, an inlet end of the first guniting channel 11 is arranged on the peripheral wall of the fixed base 1, and an outlet end of the first guniting channel 11 is arranged at the center position of the upper end face of the fixed base 1.
The main drill bit 2 is disposed on the fixed base 1, and the main drill bit 2 includes at least two drill wings 21, and in this embodiment, four drill wings 21 are illustrated as an example, and four drill wings 21 are disposed in a uniformly aligned manner at intervals along the circumferential direction of the fixed base 1. One end of the drill wing 21 is fixedly connected with the fixed base 1, and the other end of the drill wing 21 protrudes outwards along the radial direction of the fixed base 1. A receiving chamber 22 is formed between the connecting ends of the four wings 21, and the outlet end of the first guniting passage 11 is provided on the bottom wall of the receiving chamber 22. At least two composite cutting teeth 23 are arranged on each drill wing 21, three composite cutting teeth 23 are arranged in the embodiment, and the three composite cutting teeth 23 are arranged along the radial direction of the fixed base 1.
The connection support 3 is connected to the fixing base 1 and is disposed between the four drill wings 21, specifically, the connection support 3 is disposed in the accommodating chamber 22, the bottom wall of the connection support 3 is closely attached to the bottom wall of the accommodating chamber 22, and the peripheral wall of the connection support 3 is adjacent to the peripheral wall of the accommodating chamber 22. The accommodating chamber 22 is further provided with a plurality of mounting holes 24 on the outer side of the first guniting passage 11, and the bottom wall of the connection support 3 is provided with a plurality of mounting posts (not shown in the figure) which are provided in one-to-one correspondence with the plurality of mounting holes 24, preferably three mounting holes 24 and three mounting posts. The mounting column is inserted in the mounting hole 24 in an interference fit manner, so that the connection support 3 is fixedly connected with the fixed base 1. A second guniting channel is arranged in the connecting support 3, and extends along the axial direction of the connecting support 3. An annular flange (not shown) is arranged outside the inlet end of the second slurry spraying channel, and is embedded into the first slurry spraying channel 11, so that the second slurry spraying channel is communicated with the first slurry spraying channel 11 and slurry cannot leak to the periphery.
The first pilot bit 4 is arranged on the end of the connection mount 3 remote from the stationary base 1. The first pilot bit 4 comprises at least two first projections 41, preferably two in this embodiment, the two first projections 41 being arranged in a circumferential arrangement of the connection carrier 3. Each of the first protrusions 41 is provided with a first drill bit 411. A groove 42 is formed between the two first protruding portions 41, and the groove 42 opens upward to form a notch. The groove 42 is provided with a slit between the two first projecting portions 41, the slit communicating the inside and outside of the groove 42 from the peripheral wall of the groove 42.
The front end of the first pilot bit 4 is provided with a nozzle 43, the nozzle 43 is recessed in the surface of the first pilot bit 4, specifically, the nozzle 43 is disposed in the groove 42 and toward the notch, the nozzle 43 is communicated with the first slurry spraying channel 11 through the second slurry spraying channel, and is used for spraying slurry to the outside of the notch of the groove 42, and simultaneously, the slurry can be sprayed from the gap to the periphery.
The second pilot bit 5 is arranged on the connection holder 3 and between the first pilot bit 4 and the main bit 2, the first pilot bit 4 and the second pilot bit 5 being arranged in axial alignment with the connection holder 3. The outer diameter of the first pilot bit 4 is smaller than the outer diameter of the second pilot bit 5, and the outer diameter of the second pilot bit 5 is smaller than the outer diameter of the main bit 2. Specifically, the second pilot bit 5 is provided with at least three second convex portions 51, the number of the second convex portions 51 is greater than that of the first convex portions 41, and three second convex portions 51 are preferred in this embodiment, each second convex portion 51 is provided with a second bit 511, and the length of the second bit 511 is greater than that of the first bit 411. The second drill bit 511 is located outside the first drill bit 411 on the radial projection surface of the connection holder 3.
In summary, the first leading drill bit is arranged, so that the pioneer drilling effect can be achieved, the stress area of the leading drill bit is small, the defect of difficult drilling of the existing drill bit can be overcome, and the drill speed is increased; the second pilot bit is arranged for reaming the hole drilled by the first pilot bit, so that the drilling speed is further accelerated; through setting up the concave surface in first leading drill bit of shower nozzle, can play the effect of protection shower nozzle, prevent that the shower nozzle from appearing blocking phenomenon, reduce the condition emergence of shutting down the change drill bit, be favorable to improving work efficiency.
Finally, it should be emphasized that the foregoing is merely a preferred embodiment of the present utility model, and is not intended to limit the utility model, but rather that various changes and modifications can be made by those skilled in the art without departing from the spirit and principles of the utility model, and any modifications, equivalent substitutions, improvements, etc. are intended to be included within the scope of the present utility model.
Claims (5)
1. A drilling apparatus for a high pressure jet grouting pile, comprising:
the device comprises a fixed base, wherein a first guniting channel is formed in the fixed base;
the main drill bit is arranged on the fixed base and comprises at least two drill wings which are arranged along the circumferential direction of the fixed base;
the connecting support is connected to the fixed base and arranged between all the drilling wings, and a second guniting channel is formed in the connecting support;
the first pilot drill bit is arranged at one end part of the connecting support, far away from the fixed base, the front end of the first pilot drill bit is provided with a spray head, the spray head is sunken on the surface of the first pilot drill bit, and the spray head is communicated with the first slurry spraying channel through the second slurry spraying channel;
the second leading bit is arranged on the connecting support and between the first leading bit and the main bit, the first leading bit and the second leading bit are arranged along the axial direction of the connecting support, the outer diameter of the first leading bit is smaller than that of the second leading bit, and the outer diameter of the second leading bit is smaller than that of the main bit.
2. The drilling apparatus for high pressure jet grouting piles according to claim 1, wherein:
the first pilot drill bit comprises at least two first protruding parts, the two first protruding parts are arranged along the circumferential direction of the connecting support, and each first protruding part is provided with a first drill bit;
a groove is formed between the two first protruding parts, a gap is formed between every two adjacent first protruding parts, the gap is communicated with the inner side and the outer side of the groove, and the spray head is arranged in the groove.
3. The drilling apparatus for high pressure jet grouting piles according to claim 2, wherein:
the second pilot drill bit is provided with at least three second protruding parts, the number of the second protruding parts is greater than that of the first protruding parts, and each second protruding part is provided with a second drill bit;
on the radial projection surface of the connecting support, the second drill bit is positioned outside the first drill bit.
4. The drilling apparatus for high pressure jet grouting piles according to claim 1, wherein:
the number of the drill wings is four, the four drill wings are uniformly arranged at intervals, at least two composite cutting teeth are arranged on each drill wing, and the two composite cutting teeth are arranged along the radial direction of the fixed base.
5. The drilling apparatus for high pressure jet grouting piles according to claim 4, wherein:
the four drill wings are formed with a containing cavity between the same ends, the connecting support is arranged in the containing cavity, the bottom wall of the connecting support is tightly attached to the bottom wall of the containing cavity, and the peripheral wall of the connecting support is adjacent to the peripheral wall of the containing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322596993.0U CN220769367U (en) | 2023-09-22 | 2023-09-22 | Drilling device for high-pressure jet grouting pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322596993.0U CN220769367U (en) | 2023-09-22 | 2023-09-22 | Drilling device for high-pressure jet grouting pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220769367U true CN220769367U (en) | 2024-04-12 |
Family
ID=90620087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322596993.0U Active CN220769367U (en) | 2023-09-22 | 2023-09-22 | Drilling device for high-pressure jet grouting pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220769367U (en) |
-
2023
- 2023-09-22 CN CN202322596993.0U patent/CN220769367U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |