CN209704491U - A kind of round Counterboring apparatus of pre-drilling pressure meter test - Google Patents
A kind of round Counterboring apparatus of pre-drilling pressure meter test Download PDFInfo
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- CN209704491U CN209704491U CN201920327931.0U CN201920327931U CN209704491U CN 209704491 U CN209704491 U CN 209704491U CN 201920327931 U CN201920327931 U CN 201920327931U CN 209704491 U CN209704491 U CN 209704491U
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- drilling
- reamer
- rod
- outer diameter
- round
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Abstract
The utility model discloses a kind of round Counterboring apparatus of pre-drilling pressure meter test, including reamer, drilling rod and bit head；The reamer and rod portion are cylinder, and the outer diameter of reamer is greater than the outer diameter of rod portion；Reamer coaxial welding is in an endface of drilling rod；The bit head is cylinder, and the outer diameter of drill bit is consistent with the outer diameter of drilling rod；The end face of the tail end of drill bit offers threaded hole, and the end face that the drilling rod is not connect with reamer is coaxially arranged with threaded rod, and the threaded rod is tightened in threaded hole.In use, during bit head and rod boring, reamer also synchronous drilling, the gap of drill bit, drilling rod and hole wall increases at this time, to return slurries to the active force of hole wall in reduction, therefore, the utility model has the destruction that can be reduced to hole wall, improves hole quality, reduce Completion of Drilling Hole cost, production efficiency is improved, the advantages of dismounting is simple, quick, drilling machine suitable for each model.
Description
Technical field
The utility model relates to drilling tool technical field more particularly to a kind of round Counterboring apparatus of pre-drilling pressure meter test.
Background technique
The purpose of pre-drilling pressure meter test is to apply pressure to hole wall in the drilling accomplished fluently in advance by other depressor, makes soil
Body is deformed, and measures the relationship of pressure and deformation, and the deformation modulus and foundation bearing capacity of foundation soil are calculated with elastic plastic theory.
In order to obtain accurately other pressure data information, the requirement for Completion of Drilling Hole quality is very high, does not require nothing more than Kong Yaozhi,
And hole wall requirement is smooth as far as possible, and hole wall is not allowed situations such as destroying, collapsing occur.Using general drilling tool, due to drilling tool and
Gap between hole wall is smaller, above returns slurries and directly acts on hole wall, to cause the destruction of hole wall, therefore, traditional drilling tool is being bored
Into when there are hole wall disturbances it is serious, reaming speed is slow, hole quality is poor the disadvantages of.
Utility model content
For this reason, it may be necessary to provide a kind of round Counterboring apparatus of pre-drilling pressure meter test, filled with solving reaming in the prior art
Set problem serious to hole wall disturbance, that reaming speed is slow, hole quality is poor.
To achieve the above object, a kind of round Counterboring apparatus of pre-drilling pressure meter test, including reaming are inventor provided
Portion, drilling rod and bit head；
The reamer and rod portion are cylinder, and the outer diameter of reamer is greater than the outer diameter of rod portion；Reamer is same
Axis is welded in an endface of drilling rod；
The bit head is cylinder, and the outer diameter of drill bit is consistent with the outer diameter of drilling rod；The end face of the tail end of drill bit opens up
There is threaded hole, the end face that the drilling rod is not connect with reamer is coaxially arranged with threaded rod, and the threaded rod is tightened in screw thread
In hole.
As a kind of preferred structure of the utility model, the outer diameter of the reamer is 89mm.
As a kind of preferred structure of the utility model, the outer diameter of the drilling rod is 59mm.
As a kind of preferred structure of the utility model, the outer diameter of the bit head is 59mm.
As a kind of preferred structure of the utility model, the length of the drilling rod is 1m.
As a kind of preferred structure of the utility model, the reamer is provided with one.
As a kind of preferred structure of the utility model, the drilling rod is provided with one.
As a kind of preferred structure of the utility model, the bit head is provided with one.
It is different from the prior art, the round Counterboring apparatus of pre-drilling pressure meter test described in above-mentioned technical proposal, including expands
Hole portion, drilling rod and bit head；The reamer and rod portion are cylinder, and the outer diameter of reamer is greater than the outer of rod portion
Diameter；Reamer coaxial welding is in an endface of drilling rod；The bit head is cylindrical, and the outer diameter of the outer diameter of drill bit and drilling rod
Unanimously；The end face of the tail end of drill bit offers threaded hole, and the end face that the drilling rod is not connect with reamer is coaxially arranged with spiral shell
Rasp bar, the threaded rod are tightened in threaded hole.Before carrying out lateral loading test, filled using the round reaming of pre-drilling pressure meter test
It sets and drills, during bit head and rod boring, reamer also synchronous drilling, drill bit, drilling rod and hole wall at this time
Gap increases, to return slurries on reducing to the active force of hole wall, improves soil body self-stable ability, hole wall disturbs small, reaming speed
Fastly, hole quality is good, in addition, the dismounting of the round Counterboring apparatus of pre-drilling pressure meter test is simple, quick, suitable for each model
Drilling machine.
Detailed description of the invention
Fig. 1 is the stereochemical structure of the round Counterboring apparatus for the pre-drilling pressure meter test that an embodiment of the present invention is related to
Figure；
Fig. 2 is the plan structure of the round Counterboring apparatus for the pre-drilling pressure meter test that an embodiment of the present invention is related to
Figure.
Description of symbols:
1, reamer；
2, drilling rod；
3, bit head.
Specific embodiment
Technology contents, construction feature, the objects and the effects for detailed description technical solution, below in conjunction with specific reality
It applies example and attached drawing is cooperated to be explained in detail.
Fig. 1 to Fig. 2 is please referred to, the utility model provides a kind of round Counterboring apparatus of pre-drilling pressure meter test, is used for
When carrying out gauche form test, drilling tool is provided for prebored hole, is provided in particular in that a kind of disturbance of hole wall is small, and reaming speed is fast, at
The high-quality drilling tool in hole.
In the particular embodiment, the round Counterboring apparatus of the pre-drilling pressure meter test includes reamer 1,2 and of drilling rod
Bit head 3.
The reamer 1 and 2, drilling rod are cylinder, and the outer diameter of reamer 1 is greater than 2, drilling rod outer diameters；Reaming
1 coaxial welding of portion is in an endface of drilling rod 2；
The bit head 3 is cylinder, and such setting allows the uniform cutting soil of bit head 3, while also device to hole
Wall generates pressure laterally outward, but also the hole section of expansion is in complete circle, hole wall is smooth, soil stabilization, effectively
Avoid collapse hole.The outer diameter of drill bit is consistent with the outer diameter of drilling rod 2；The end face of the tail end of drill bit offers threaded hole, and the drilling rod 2 is not
The end face connecting with reamer 1 is coaxially arranged with threaded rod, and the threaded rod is tightened in threaded hole.
Threaded hole is arranged in the end face that reamer 1 is not connect with drilling rod 2, and outer spiral shell is arranged in the outer wall of the kelly of drilling machine
Line, such setting are torqued-up to the kelly of drilling machine coaxially at the top of reamer 1.In operation, drilling machine is driven
Dynamic kelly rotation, kelly drive the round Counterboring apparatus coaxial rotating of pre-drilling pressure meter test, in the process, bore
Head 3, drilling rod 2 and reamer 1 successively drill, until be drilled into predetermined depth, with expanding in 2 drilling process of bit head 3 and drilling rod
The also synchronous drilling of hole portion 1, the gap of drill bit, drilling rod 2 and hole wall increases at this time, to return effect of the slurries to hole wall on reducing
Power improves soil body self-stable ability, and hole wall disturbance is small, and then can guarantee that drilling quality is good and drilling efficiency is high.
After drilling is completed, drilling machine pulls out of hole, and removes the round Counterboring apparatus of pre-drilling pressure meter test, other depressor is installed, by it
It is put into drilling, then carries out lateral loading test.It is finished to the test of this measuring point, lifts drilling machine, remove other depressor；Recycle above-mentioned work
Sequence carries out next measuring point operation, until all measuring points in the hole are completed.
According to test requirements document, the drill bit of the optional outer diameter 50mm or 60mm of bit head 3, in a preferred embodiment, the brill
The outer diameter of bar 2 is 59mm, and similarly, the outer diameter of the bit head 3 is 59mm.
In a certain embodiment, 2 length 1m of drilling rod or so is advisable, and Counterboring apparatus outer diameter 89mm is advisable.The reamer 1
Outer diameter is 89mm.
In a certain embodiment, the reamer 1 is provided with one, and the drilling rod 2 is provided with one, the bit head 3
It is provided with one.
It should be noted that being not intended to limit although the various embodiments described above have been described herein
The scope of patent protection of the utility model.Therefore, based on the innovative idea of the utility model, embodiment described herein is carried out
Change and modification or equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, directly
Or above technical scheme is used in other related technical areas indirectly, it is included in the patent protection model of the utility model
Within enclosing.
Claims (8)
1. a kind of round Counterboring apparatus of pre-drilling pressure meter test, which is characterized in that including reamer, drilling rod and bit head；
The reamer and rod portion are cylinder, and the outer diameter of reamer is greater than the outer diameter of rod portion；Reamer is coaxially welded
It is connected to an endface of drilling rod；
The bit head is cylinder, and the outer diameter of drill bit is consistent with the outer diameter of drilling rod；The end face of the tail end of drill bit offers spiral shell
Pit, the end face that the drilling rod is not connect with reamer are coaxially arranged with threaded rod, and the threaded rod is tightened in threaded hole.
2. the round Counterboring apparatus of pre-drilling pressure meter test according to claim 1, which is characterized in that the reamer
Outer diameter is 89mm.
3. the round Counterboring apparatus of pre-drilling pressure meter test according to claim 1, which is characterized in that outside the drilling rod
Diameter is 59mm.
4. the round Counterboring apparatus of pre-drilling pressure meter test according to claim 1, which is characterized in that the bit head
Outer diameter is 59mm.
5. the round Counterboring apparatus of pre-drilling pressure meter test according to claim 1, which is characterized in that the length of the drilling rod
Degree is 1m.
6. the round Counterboring apparatus of pre-drilling pressure meter test according to claim 1, which is characterized in that the reamer is set
It is equipped with one.
7. the round Counterboring apparatus of pre-drilling pressure meter test according to claim 1, which is characterized in that the drilling rod setting
There is one.
8. the round Counterboring apparatus of pre-drilling pressure meter test according to claim 1, which is characterized in that the bit head is set
It is equipped with one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920327931.0U CN209704491U (en) | 2019-03-15 | 2019-03-15 | A kind of round Counterboring apparatus of pre-drilling pressure meter test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920327931.0U CN209704491U (en) | 2019-03-15 | 2019-03-15 | A kind of round Counterboring apparatus of pre-drilling pressure meter test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209704491U true CN209704491U (en) | 2019-11-29 |
Family
ID=68646438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920327931.0U Active CN209704491U (en) | 2019-03-15 | 2019-03-15 | A kind of round Counterboring apparatus of pre-drilling pressure meter test |
Country Status (1)
| Country | Link |
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| CN (1) | CN209704491U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116677322A (en) * | 2023-08-04 | 2023-09-01 | 中国建筑第六工程局有限公司 | Variable-aperture drill rod for underground engineering rock-soil body drilling and drilling method |
-
2019
- 2019-03-15 CN CN201920327931.0U patent/CN209704491U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116677322A (en) * | 2023-08-04 | 2023-09-01 | 中国建筑第六工程局有限公司 | Variable-aperture drill rod for underground engineering rock-soil body drilling and drilling method |
| CN116677322B (en) * | 2023-08-04 | 2023-11-10 | 中国建筑第六工程局有限公司 | Variable-aperture drill rod for underground engineering rock-soil body drilling and drilling method |
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