CN210714516U - Combined type drilling rod - Google Patents
Combined type drilling rod Download PDFInfo
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- CN210714516U CN210714516U CN201921302232.7U CN201921302232U CN210714516U CN 210714516 U CN210714516 U CN 210714516U CN 201921302232 U CN201921302232 U CN 201921302232U CN 210714516 U CN210714516 U CN 210714516U
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- drill rod
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- drill
- sliding sleeve
- gas channel
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Abstract
The utility model provides a combined type drill rod, which solves the technical problem that the working efficiency and the energy saving of the existing drill rod can not be achieved simultaneously; the drill pipe gas channel is formed by an annular space between the drill pipe outer pipe assembly and the drill pipe inner pipe assembly, a lower gas channel switch assembly is arranged at the lower end of the drill pipe gas channel, and an upper gas channel switch assembly is arranged at the upper end of the drill pipe gas channel; the lower gas channel switch assembly comprises a second connecting disc connected with the inner wall of the drill rod outer pipe assembly and the outer wall of the drill rod inner pipe assembly, a lower spring with the upper end connected with the second connecting disc, a lower sliding sleeve connected with the lower end of the lower spring and a sealing gland with the outer ring connected with the drill rod outer pipe assembly from top to bottom. The utility model discloses wide application in bored concrete pile machine technical field.
Description
Technical Field
The utility model relates to a drilling rod especially relates to a combined type drilling rod.
Background
At present, with the continuous development of basic construction in China, the special geological conditions encountered in the construction are more and more, and when a thicker clay layer or a rock stratum with higher hardness is encountered, high-pressure gas needs to be conveyed into a drill rod to blow away clay or rock powder wrapped on a drill bit.
At present, two methods are generally adopted, one method is that a channel for pouring concrete in the middle of a drill rod is directly adopted to convey high-pressure gas, and the channel has a large drift diameter, so that a high-power air compressor is needed to meet the pressure requirement, and the energy waste is large. The other is that a steel pipe or a high-pressure rubber pipe is added in a channel for pouring concrete for conveying high-pressure gas, and the required power of an air compressor is low and the energy is saved due to the small drift diameter of the pipeline. However, because the gas pipeline is added in the concrete conveying pipe, when concrete is poured, pipe blockage is easily caused, the construction efficiency is low, and the labor intensity of workers is increased.
Disclosure of Invention
The utility model discloses to the technical problem that current drilling rod work efficiency and energy saving can not be got concurrently, provide a combined type drilling rod that work efficiency and energy saving have concurrently.
Therefore, the technical scheme of the utility model is that the drill pipe gas channel comprises a drill pipe outer pipe assembly, a drill pipe inner pipe assembly and a drill pipe gas channel formed by an annular space between the drill pipe outer pipe assembly and the drill pipe inner pipe assembly, wherein a lower gas channel switch assembly is arranged at the lower end of the drill pipe gas channel, and an upper gas channel switch assembly is arranged at the upper end of the drill pipe gas channel;
the lower gas channel switch assembly comprises a second connecting disc connected with the inner wall of the drill rod outer pipe assembly and the outer wall of the drill rod inner pipe assembly, a lower spring of which the upper end is connected with the second connecting disc, a lower sliding sleeve connected with the lower end of the lower spring and a sealing gland of which the outer ring is connected with the drill rod outer pipe assembly from top to bottom; the upper gas channel switch assembly comprises a third connecting disc connected with the inner wall of the drill rod outer pipe assembly and the outer wall of the drill rod inner pipe assembly, an upper spring with the lower end connected with the third connecting disc, an upper sliding sleeve connected with the upper end of the upper spring and an upper sealing ring with the outer ring connected with the drill rod outer pipe assembly from bottom to top.
Preferably, the lower sliding sleeve is abutted against the outer wall of the inner pipe assembly of the drill pipe by the sealing gland, and the lower end face of the lower sliding sleeve exceeds the lower end face of the sealing gland; the upper end surface of the upper sliding sleeve exceeds the upper end surface of the drill rod.
Preferably, the lower sliding sleeve is wide at the upper part and narrow at the lower part, the outer side surface of the lower sliding sleeve is an inclined surface, and the sealing gland is provided with an inclined surface matched with the inclined surface of the lower sliding sleeve.
Preferably, the upper sealing ring is wide at the upper part and narrow at the lower part, the inner surface of the upper sealing ring is an inclined surface, and the upper sliding sleeve is provided with an inclined surface matched with the inclined surface of the upper sealing ring.
Preferably, the second connecting disc and the third connecting disc are provided with vent holes.
Preferably, the outer pipe assembly of the drill rod comprises an outer pipe of the drill rod, a lower flange of the drill rod connected with the lower end of the outer pipe of the drill rod and an upper flange of the drill rod connected with the upper end of the outer pipe of the drill rod, and the inner surface of the lower flange of the drill rod is matched with the outer surface of the upper flange of the drill rod.
Preferably, the drill pipe inner pipe assembly comprises a drill pipe grouting pipe and a drill pipe sealing sleeve, the lower part of the drill pipe sealing sleeve is sleeved on the upper part of the drill pipe grouting pipe, and the drill pipe sealing sleeve is matched with the lower sliding sleeve; the outer surface of the upper part of the drill rod sealing sleeve is provided with an annular bulge, the upper sliding sleeve is provided with an annular groove matched with the annular bulge, and the annular groove is larger than the annular bulge.
The beneficial effects of the utility model, simple structure, reasonable both can pour into the concrete, can have the air flue again alone, and two kinds of passageways do not influence each other, and the air flue switching is simple easy-to-use, and production efficiency is high.
Drawings
FIG. 1 is a schematic structural view of a drill rod of the present invention;
FIG. 2 is an enlarged view at A of FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
FIG. 4 is the state of FIG. 2 with drill pipe connected;
FIG. 5 is the state of FIG. 3 with drill pipe connected;
FIG. 6 is a schematic view of the construction of the drill bit;
fig. 7 is a schematic view of the connection of the drill bit and the drill rod.
Description of the symbols in the drawings
1. An upper sealing ring; 2. an upper sliding sleeve; 3. sealing a sleeve for the drill rod; 4. an upper spring; 5. a drill rod grouting pipe; 6. a drill rod upper flange; 7. a drill rod outer pipe; 8. a lower spring; 9. a lower sliding sleeve; 10. a sealing gland; 11. a drill pipe lower flange; 12. an upper drill flange; 13. a first splice tray; 14. a drill grouting pipe; 15. an outer drill pipe; 16. a helical blade; 17. drilling a door; 18. a drill bit sealing sleeve; 19. a second connecting disc; 20. and a third connecting disc.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in fig. 1-5, a composite drill rod comprises a drill rod outer pipe assembly, a drill rod inner pipe assembly and a drill rod gas channel formed by an annular space between the drill rod outer pipe assembly and the drill rod inner pipe assembly, wherein a lower gas channel switch assembly is arranged at the lower end of the drill rod gas channel, and an upper gas channel switch assembly is arranged at the upper end of the drill rod gas channel.
The lower gas channel switch assembly comprises a second connecting disc 19 connected with the inner wall of the drill rod outer tube assembly and the outer wall of the drill rod inner tube assembly, a lower spring 8 connected with the second connecting disc 19 at the upper end, a lower sliding sleeve 9 connected with the lower end of the lower spring 8 and a sealing gland 10 connected with the drill rod outer tube assembly at the outer ring from top to bottom, the lower sliding sleeve 9 is abutted to the outer wall of the drill rod inner tube assembly by the sealing gland 10, and the lower end face of the lower sliding sleeve 9 exceeds the lower end face of the sealing gland 10.
The upper part of the lower sliding sleeve 9 is wide and the lower part of the lower sliding sleeve 9 is narrow, the outer side surface of the lower sliding sleeve 9 is an inclined surface, and the sealing gland 10 is provided with an inclined surface matched with the inclined surface of the lower sliding sleeve 9. The two inclined surfaces are combined to form a seal. The second land 19 is provided with a vent hole. In this embodiment, the lower sliding sleeve 9 is an inverted truncated cone-shaped structure with a through hole inside.
The upper gas channel switch assembly comprises a third connecting disc 20 connected with the inner wall of the drill rod outer tube assembly and the outer wall of the drill rod inner tube assembly, an upper spring 4 with the lower end connected with the third connecting disc 20, an upper sliding sleeve 2 connected with the upper end of the upper spring 4 and an upper sealing ring 1 with the outer ring connected with the drill rod outer tube assembly from bottom to top, and the upper end face of the upper sliding sleeve 2 exceeds the upper end face of a drill rod. The upper sealing ring 1 is wide at the top and narrow at the bottom, the inner surface of the upper sealing ring 1 is an inclined surface, and the upper sliding sleeve 2 is provided with an inclined surface matched with the inclined surface of the upper sealing ring 1. The third land 20 is provided with a vent hole.
The drill rod outer pipe assembly comprises a drill rod outer pipe 7, a drill rod lower flange 11 connected with the lower end of the drill rod outer pipe 7 and a drill rod upper flange 6 connected with the upper end of the drill rod outer pipe 7, the inner surface of the drill rod lower flange 11 is matched with the outer surfaces of the drill bit upper flange 12 and the drill rod upper flange 6, and the drill rod lower flange 11 is used for being connected with the drill bit upper flange 12 or the drill rod upper flange 6.
The drill pipe inner pipe assembly comprises a drill pipe grouting pipe 5 and a drill pipe sealing sleeve 3, the lower part of the drill pipe sealing sleeve is sleeved on the upper part of the drill pipe grouting pipe 5, and the drill pipe sealing sleeve 3 is matched with a lower sliding sleeve 9; the outer surface of the upper part of the drill rod sealing sleeve 3 is provided with an annular bulge, the upper sliding sleeve 2 is provided with an annular groove matched with the annular bulge, and the annular groove is larger than the annular bulge. Under the restriction of the annular bulge, the upper sliding sleeve 2 can move up and down within a limited distance, and the drill rod sealing sleeve 3 and the upper sealing ring 1 act together to prevent the upper sliding sleeve 2 from sliding out of the upper flange 6 of the drill rod and combining with the upper sliding sleeve 2, and can complete sealing to prevent an air passage from entering sundries.
The upper drill rod flange 6 and the lower drill rod flange 11 are welded together through the outer drill rod pipe 7, the drill rod sealing sleeve 3 and the drill rod grouting pipe 5 are welded together, and the drill rod grouting pipe 5 is welded together with the upper drill rod flange 6 and the lower drill rod flange 11 to form a fixed structure. The upper spring 4 and the upper sliding sleeve 2 are arranged in a drill rod gas channel between a drill rod upper flange 6 and a drill rod grouting pipe 5, and sealing is formed by the upper sealing ring 1 and the flange. The lower spring 8 and the lower sliding sleeve 9 are arranged on the drill rod grouting pipe 5, and are fixed on a drill rod gas channel between a drill rod lower flange 11 and the drill rod grouting pipe 5 by a sealing gland 10.
As shown in fig. 4 and 5, when two drill rods are connected end to end, the lower drill rod flange 11 is connected with the upper drill rod flange 6, the upper sliding sleeve 2 of the gas channel switch assembly on one drill rod abuts against the sealing gland 10 of the lower gas channel switch assembly on the other drill rod, the upper sliding sleeve 2 moves downwards to press the upper spring 4, the upper sliding sleeve 2 is parallel to the upper end of the drill rod grouting pipe 5, a gap is formed between the upper sliding sleeve 2 and the drill rod sealing sleeve 3, and a gas channel at the upper end is opened. An upper sealing sleeve 1 at the upper end of a drill rod grouting pipe 5 jacks a lower sliding sleeve 9 of a lower gas channel switch component, the lower sliding sleeve 9 moves upwards to compress a lower spring 8, a gap is formed between the lower sliding sleeve 9 and a sealing gland 10, and a gas channel at the lower end is opened to form a closed gas channel. When the pile casing is poured, the concrete passes through the middle grouting pipe, and pouring is completed.
When the two drill rods are disassembled, the upper sliding sleeve 2 and the lower sliding sleeve 9 respectively seal the gas channel under the action of the upper spring 4 and the lower spring 8, and concrete and other impurities are prevented from entering the gas channel.
As shown in fig. 6, the drill bit matched with the drill rod comprises an outer drill bit pipe assembly, an inner drill bit pipe assembly connected with the outer drill bit pipe assembly, a drill gate 17 connected with the bottom of the outer drill bit pipe assembly, and a drill bit gas channel formed by an annular space between the outer drill bit pipe assembly and the inner drill bit pipe assembly, wherein the drill gate 17 is provided with a gas outlet hole.
The drill bit inner pipe component comprises a drill bit grouting pipe 14 and a drill bit sealing sleeve 18, wherein the lower part of the drill bit sealing sleeve is sleeved on the upper part of the drill bit grouting pipe 14, and the drill bit sealing sleeve 18 is matched with the lower sliding sleeve 9. When the drill bit is connected with the drill rod, the drill bit sealing sleeve 18 plays a role in sealing and also plays a role in pushing the lower sliding block sleeve 9 upwards so as to communicate with a drill rod gas channel.
The outer wall of the outer drill pipe assembly is provided with helical blades 16. The inner wall of the drill bit outer pipe assembly is connected with the outer wall of the drill bit inner pipe assembly through a first connecting disc 13, and a vent hole is formed in the first connecting disc 13. Two or more first connection pads 13 may be provided.
The outer drill bit pipe assembly comprises an outer drill bit pipe 15 and an upper drill bit flange 12 connected with the upper end of the outer drill bit pipe 15. The drill upper flange 121 is welded with the drill outer pipe 15, the drill grouting pipe 14 is welded with the inner side of the drill upper flange 12 through the first connecting disc 13 to form a fixed structure, and the lower end of the drill outer pipe 15 is connected with the drill gate 17 through a pin shaft. The first connecting plate 13 is provided with a vent hole.
As shown in figure 7, when the drill pipe is connected with the drill bit, the drill bit sealing sleeve 18 at the upper end of the drill bit grouting pipe 14 pushes the lower sliding sleeve 9 of the drill pipe lower flange 11 open, the lower sliding sleeve 9 compresses the lower spring 8 and moves upwards, the lower sliding sleeve 9 and the sealing gland 10 generate a gap, and a drill pipe gas channel is opened to form a closed gas channel. The gas enters the gas channel of the drill bit and flows out of the drill bit along the two gas outlet holes on the drill gate 17 to blow away the clay attached to the drill bit, thereby improving the drilling efficiency. During pouring, the pin shaft is pulled down, the drill gate 17 is taken down, and concrete pouring is completed through the drill bit grouting pipe 14 in the middle.
The utility model discloses simple structure, reasonable both can pour into the concrete, can have the air flue again alone, and two kinds of passageways do not influence each other, and the air flue switching is simple easy-to-use, and production efficiency is high.
However, the above embodiments are only examples of the present invention, and the scope of the present invention should not be limited thereby, and the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.
Claims (7)
1. A combined type drill rod is characterized by comprising a drill rod outer pipe assembly, a drill rod inner pipe assembly and a drill rod gas channel formed by an annular space between the drill rod outer pipe assembly and the drill rod inner pipe assembly, wherein a lower gas channel switch assembly is arranged at the lower end of the drill rod gas channel, and an upper gas channel switch assembly is arranged at the upper end of the drill rod gas channel;
the lower gas channel switch assembly comprises a second connecting disc connected with the inner wall of the drill rod outer pipe assembly and the outer wall of the drill rod inner pipe assembly, a lower spring with the upper end connected with the second connecting disc, a lower sliding sleeve connected with the lower end of the lower spring and a sealing gland with the outer ring connected with the drill rod outer pipe assembly from top to bottom; the upper gas channel switch assembly comprises a third connecting disc connected with the inner wall of the drill rod outer tube assembly and the outer wall of the drill rod inner tube assembly, an upper spring connected with the lower end of the third connecting disc, an upper sliding sleeve connected with the upper end of the upper spring, an outer ring and an upper sealing ring connected with the drill rod outer tube assembly from bottom to top.
2. The composite drill rod as recited in claim 1, wherein the gland abuts the lower sliding sleeve against an outer wall of the drill rod inner tube assembly, a lower end surface of the lower sliding sleeve extending beyond a lower end surface of the gland; the upper end face of the upper sliding sleeve exceeds the upper end face of the drill rod.
3. The composite drill rod as claimed in claim 2, wherein the lower sliding sleeve is wider at the top and narrower at the bottom, the outer side surface of the lower sliding sleeve is an inclined surface, and the gland is provided with an inclined surface matched with the inclined surface of the lower sliding sleeve.
4. The composite drill rod as claimed in claim 3, wherein the upper sealing ring is wider at the top and narrower at the bottom, the inner surface of the upper sealing ring is an inclined surface, and the upper sliding sleeve is provided with an inclined surface matched with the inclined surface of the upper sealing ring.
5. The composite drill rod as recited in claim 1, wherein the second and third lands have air holes formed therein.
6. The composite drill rod as recited in claim 1, wherein the outer drill rod pipe assembly comprises an outer drill rod pipe, a lower drill rod flange connected to a lower end of the outer drill rod pipe, and an upper drill rod flange connected to an upper end of the outer drill rod pipe, an inner surface of the lower drill rod flange mating with an outer surface of the upper drill rod flange.
7. The composite drill rod as claimed in claim 1, wherein the drill rod inner tube assembly comprises a drill rod grouting pipe, a drill rod sealing sleeve whose lower part is sleeved on the upper part of the drill rod grouting pipe, and the drill rod sealing sleeve is matched with the lower sliding sleeve; the outer surface of the upper part of the drill rod sealing sleeve is provided with an annular protrusion, the upper sliding sleeve is provided with an annular groove matched with the annular protrusion, and the annular groove is larger than the annular protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921302232.7U CN210714516U (en) | 2019-08-12 | 2019-08-12 | Combined type drilling rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921302232.7U CN210714516U (en) | 2019-08-12 | 2019-08-12 | Combined type drilling rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210714516U true CN210714516U (en) | 2020-06-09 |
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ID=70966531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921302232.7U Active CN210714516U (en) | 2019-08-12 | 2019-08-12 | Combined type drilling rod |
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| Country | Link |
|---|---|
| CN (1) | CN210714516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508091A (en) * | 2022-02-11 | 2022-05-17 | 浙江坤德创新岩土工程有限公司 | Intelligent drilling machine equipment with bidirectional rotary stirring mechanism and construction method |
-
2019
- 2019-08-12 CN CN201921302232.7U patent/CN210714516U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508091A (en) * | 2022-02-11 | 2022-05-17 | 浙江坤德创新岩土工程有限公司 | Intelligent drilling machine equipment with bidirectional rotary stirring mechanism and construction method |
| CN114508091B (en) * | 2022-02-11 | 2024-01-05 | 浙江坤德创新岩土工程有限公司 | Intelligent drilling machine equipment with bidirectional rotary stirring mechanism and construction method |
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