CN206860103U - Rotary drilling machine drill bit - Google Patents
Rotary drilling machine drill bit Download PDFInfo
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- CN206860103U CN206860103U CN201720617684.9U CN201720617684U CN206860103U CN 206860103 U CN206860103 U CN 206860103U CN 201720617684 U CN201720617684 U CN 201720617684U CN 206860103 U CN206860103 U CN 206860103U
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- waistband
- drill bit
- drilling rod
- scraper
- drilling machine
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Abstract
It the utility model is related to a kind of rotary drilling machine drill bit, including drilling rod；Enclose the lower waistband located at drilling rod periphery；Enclose identical with the diameter of the lower waistband located at drilling rod periphery, the upper waistband above the lower waistband, the upper waistband；Connection is fixedly arranged on the scraper of the upper waistband outer surface and the lower waistband outer surface；And it is fixedly arranged on the cutter assembly of the drilling rod bottom.The beneficial effects of the utility model are：Ensure the perpendicularity of drill bit using double Waistband structures, and in the fixed scraper in the outside of double Waistband structures, so that the uniformity of mudcake thickness is improved by scraper while perpendicularity is ensured, so as to improve the stability of hole wall, the appearance of collapse hole, shrinkage cavity phenomenon is avoided, improves one-tenth porosity.
Description
Technical field
Technical field of building construction is the utility model is related to, refers in particular to a kind of rotary drilling machine drill bit.
Background technology
The 1990s mid-term, Zhuan Ji manufactories for adapt to market demands, having developed rotating disc type drilling machine expires
Sufficient pile foundation engineering construction requirement.Rotating disc type drilling machine drives rotating disk to drive rod boring by dynamical system, and passes through elevator
Mechanism or oil cylinder lifting drilling tool apply the pressure of the drill, under the conditions of mud off, creep at a slow speed, and boring mud is discharged by circulating dreg removing system
Mud pit, after the completion of pore-forming, concrete perfusion pile, the pile making method is the most commonly used at home, and application is wider.Its feature
It is：Adaptation to soil layer is strong, suitable for skyscraper, soft, the hard stratum that level of ground water is higher, such as mud, cohesive soil, sand
The soil layers such as soil, soft rockmass.Aperture is from 300mm to 2000mm, and depth of pore forming is from 40m to 100m；Construct noiseless, it is shockproof；Machine
Tool equipment is simple, and easy to operate, expense is relatively low, but speed of fulfiling hole is slow, and efficiency is low, and water consumption is big, and mud emission amount is big, pollutes ring
Border, the more difficult control of hole expansibility.
Waistband on normal drill bit only has one, and the periphery of waistband is not provided with scraper, in silt soil strata and sand
When matter soil layer carries out pore-forming operation, because soil moisture in layer is high, the void ratio of hole wall is big, and pore wall strength is low, thixotropy is big, easily
The common quality defects such as collapse hole, shrinkage cavity, snakelike hole are produced, causes card cage phenomenon occur during steel reinforcement cage is transferred, has a strong impact on and apply
Work progress.
For in rig out-of-flatness in place or drilling process in Chinese patent application prospectus, CN205805416U
Encounter soil layer change etc. caused by reason pore-forming tilt, off normal the problem of, disclose it is a kind of with high verticality double waistbands brill
Hole pouring pile drill bit, it forms the tubbiness framework drill bit of a double belt types by using lower positioning annulus and upper positioning annulus,
So as to effectively ensure the perpendicularity of drill bit construction, pore-forming inclination, the phenomenon of off normal are prevented.The drill bit effectively prevent snakelike
The generation in hole, but can not solve the problems, such as that hole wall void ratio is big, pore wall strength low caused collapse hole, shrinkage cavity.
Utility model content
The defects of the purpose of this utility model is to overcome prior art, there is provided a kind of rotary drilling machine drill bit, can solve
Certainly when the high soil layer of water content carries out pore-forming operation, the void ratio of hole wall is big, and pore wall strength is low, thixotropy is big, easily causes
The problem of collapse hole, shrinkage cavity, snakelike hole.
Realizing the technical scheme of above-mentioned purpose is：
The utility model provides a kind of rotary drilling machine drill bit, including：
Drilling rod；
Enclose the lower waistband located at drilling rod periphery；
Enclose located at drilling rod periphery, the upper waistband above the lower waistband, the upper waistband and the lower waistband
Diameter it is identical；
Connection is fixedly arranged on the scraper of the upper waistband outer surface and the lower waistband outer surface；And
It is fixedly arranged on the cutter assembly of the drilling rod bottom.
The beneficial effects of the utility model are to ensure the perpendicularity of drill bit using double Waistband structures, and in double Waistband structures
The fixed scraper in outside, so as to while perpendicularity is ensured by scraper raising mudcake thickness uniformity, so as to improve hole
The stability of wall, the appearance of collapse hole, shrinkage cavity phenomenon is avoided, improves one-tenth porosity.
The utility model rotary drilling machine drill bit further improvement is that, the thickness of the scraper is laterally another from one end
Side tapers into.
The utility model rotary drilling machine drill bit further improvement is that, the top of the scraper and the upper waistband
Top flushes, and the bottom of the scraper flushes with the bottom of the lower waistband.
The utility model rotary drilling machine drill bit further improvement is that, in addition to head rod and second connection
Bar；The head rod is fixedly connected between the upper waistband and the drilling rod, and second connecting rod is fixedly connected on
Between the lower waistband and the drilling rod.
The utility model rotary drilling machine drill bit further improvement is that, in addition to be connected to the upper waistband, described
The reinforcing bar of lower waistband and the scraper.
The utility model rotary drilling machine drill bit further improvement is that, the drilling rod be inner hollow rod member.
The utility model rotary drilling machine drill bit further improvement is that, the cutter assembly includes knife bar and cutting
Knife；The knife bar skewed horizontal load is connected to the inner surface of the lower waistband and the bottom of the drilling rod, and the bite is fixedly arranged on
The outside of the knife bar and the bottom of the drilling rod.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model rotary drilling machine drill bit.
Fig. 2 is the side view of the utility model rotary drilling machine drill bit.
Fig. 3 is the top view of the utility model rotary drilling machine drill bit.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Refering to Fig. 1, the utility model provides a kind of rotary drilling machine drill bit, can solve to carry out in the high soil layer of water content
During pore-forming operation, the void ratio of hole wall is big, and pore wall strength is low, thixotropy is big, the problem of easily causing collapse hole, shrinkage cavity, snakelike hole,
The uniformity of mud cake on the wall of borehole thickness is improved, so as to ensure the stability of hole wall, avoids collapse hole, shrinkage cavity, the appearance in snakelike hole, is improved
One-tenth porosity.The utility model rotary drilling machine drill bit is illustrated below in conjunction with the accompanying drawings.
As shown in figure 1, the utility model rotary drilling machine drill bit include drilling rod 11, upper waistband 12, head rod 22, under
Waistband 13, the second connecting rod 23, scraper 14, reinforcing bar 15 and cutter assembly.
As depicted in figs. 1 and 2, drilling rod 11 is hollow rod member.During construction, the drill bit is that rotary shaft is revolved at a high speed with drilling rod 11
Turn and move down, meanwhile, artificially mud is injected inside drilling rod 11, conveyed mud from ground by hollow drilling rod 11
To bottom hole, mud is circulated between bottom hole and ground, play a part of stable hole wall, while also serve as deslagging means, soil
Slag by mud tap outside.
Lower waistband 13 is circular ring structure, is the center of circle with drilling rod 11, encloses and is set located at the peripheral and vertical with drilling rod 11 of drilling rod 11
Put, and drilling rod 11 is connected and fixed on by the second connecting rod 23.Second connecting rod 23 is fixed to be connected to lower waist perpendicular to drilling rod 11
Outer surface with 13 inner surface and drilling rod 11.As a preferable connected mode, the second connecting rod 23 has three, and two-by-two it
Between angle be 120 °.
As shown in figures 1 and 3, upper waistband 12 is also circular ring structure, is the center of circle with drilling rod 11, and the diameter of upper waistband 12 is with
The diameter of waistband 13 is identical.Upper waistband 12 encloses located at the periphery of drilling rod 11 and is located at the top of lower waistband 13, is flat with lower waistband 13
Row is set, and is connected and fixed on drilling rod 11 by head rod 22.For the drill bit in work progress, upper waistband 12 plays guiding
Effect, the drill bit is kept vertical, prevent the appearance in snakelike hole.Head rod 22 is fixed to be connected to perpendicular to drilling rod 11
The inner surface of waistband 13 and the outer surface of drilling rod 11.As a preferable connected mode, head rod 22 has three, and two-by-two
Between angle be 120 °.
Scraper 14 connects the outer surface for being fixedly arranged on waistband 12 and the outer surface of lower waistband 13.The thickness of scraper 14 is from one end
Lateral another side tapers into, and the thickness of scraper in the vertical direction is constant.Scraper 14 has three, in a clockwise direction
Or counterclockwise set.When the drill bit is constructed, scraper 14 adds the driving torque of drill bit, and then has the rotating speed of drill bit
Reduced, hole wall having time is formed mudcake, improve the uniformity of mudcake thickness, so as to improve the stability of hole wall, avoid out
The appearance of existing collapse hole, shrinkage cavity phenomenon, improves one-tenth porosity.
As depicted in figs. 1 and 2, reinforcing bar 15 is fixedly connected on waistband 12, lower waistband 13 and scraper 14, plays reinforcing
Act on, the rigidity of waistband 12, lower waistband 13 and scraper 14 in lifting.
As shown in figures 1 and 3, cutter assembly is fixedly arranged on the bottom of drilling rod 11, and downward cone is formd in the bottom of drilling rod 11
Shape structure, be advantageous to drill bit and drill downwards.The cutter assembly includes knife bar 16 and bite 17, and the skewed horizontal load of knife bar 16 is connected to
The inner surface of lower waistband 13 and the bottom of drilling rod 11, bite 17 are fixedly arranged on the outside of knife bar 16 and the bottom of drilling rod 11.Make
For a preferred embodiment, knife bar 16 is six, is surrounded on the periphery of drilling rod 11, and be symmetrically fixedly arranged on the phase of drilling rod 11 two-by-two
To both sides.
The work progress of the utility model rotary drilling machine drill bit is introduced below：
Drilling construction is carried out using the utility model rotary drilling machine drill bit, the drill bit is installed on rotating disc type drilling first
Machinery, rotating disc type drilling machine drive rotating disk to drive drilling rod to rotate by dynamical system, and are lifted by hoisting mechanism or oil cylinder
Drilling tool applies the pressure of the drill, drill bit is drilled down into soil layer.Because the soil body is loose, collapsed under the pressure of the soil body in the horizontal direction in oriented hole
The trend of contracting, it is therefore desirable to mud is delivered to bottom hole from ground by hollow drilling rod, makes to form mudcake at hole wall, and pass through
The applied mudcake of scraper, makes mudcake thickness uniform, improves the stability of hole wall, prevents the soil body from collapsing.Under the conditions of mud off, bore
Head is crept at a slow speed, while boring mud circulates discharge drilling by mud.
The utility model rotary drilling machine drill bit has the beneficial effect that：
Ensure the perpendicularity of drill bit using double Waistband structures, and in the fixed scraper in the outside of double Waistband structures, so as to protect
The uniformity of mudcake thickness is improved while demonstrate,proving perpendicularity by scraper, so as to improve the stability of hole wall, avoids collapse hole, shrinkage cavity
The appearance of phenomenon, improves one-tenth porosity.
Following table is contrasted using normal drill bit and situation about being constructed using the utility model rotary drilling machine drill bit.
Table 1 is contrasted using normal drill bit and situation about being constructed using the utility model rotary drilling machine drill bit
Note：(1) fullness coefficient value can reflect uneven whether serious of hole wall, and fullness coefficient is bigger to represent that hole wall is uneven
Phenomenon is more serious；
(2) fullness coefficient variance can reflect the stability of pore-forming, and fullness coefficient variance is bigger to represent that pore-forming stability is poorer.
From upper table data, hole wall can be made compared with using normal drill bit using the utility model rotary drilling machine drill bit
Stability is more preferable, so as to improve hole quality, makes pore-forming more smooth, has saved the pore-forming time, so as to shorten the duration, reduces
Construction costs；And collapse hole, shrinkage cavity, the appearance in snakelike hole are effectively avoided, card cage when avoiding descending reinforcing cage, and then keep away to a certain extent
Useless hole, useless stake are exempted from, have reduced construction costs, saved engineering cost.
The utility model is described in detail above in association with accompanying drawing embodiment, those skilled in the art can root
Many variations example is made to the utility model according to described above.Thus, some details in embodiment should not be formed to this practicality
New restriction, the utility model will be used as the scope of protection of the utility model using the scope that appended claims define.
Claims (7)
- A kind of 1. rotary drilling machine drill bit, it is characterised in that including：Drilling rod；Enclose the lower waistband located at drilling rod periphery；Enclose straight with the lower waistband located at drilling rod periphery, the upper waistband above the lower waistband, the upper waistband Footpath is identical；Connection is fixedly arranged on the scraper of the upper waistband outer surface and the lower waistband outer surface；AndIt is fixedly arranged on the cutter assembly of the drilling rod bottom.
- 2. rotary drilling machine drill bit as claimed in claim 1, it is characterised in that the thickness of the scraper is laterally another from one end Side tapers into.
- 3. rotary drilling machine drill bit as claimed in claim 2, it is characterised in that the top of the scraper and the upper waistband Top flushes, and the bottom of the scraper flushes with the bottom of the lower waistband.
- 4. rotary drilling machine drill bit as claimed in claim 1, it is characterised in that also connected including head rod and second Bar；The head rod is fixedly connected between the upper waistband and the drilling rod, and second connecting rod is fixedly connected on Between the lower waistband and the drilling rod.
- 5. rotary drilling machine drill bit as claimed in claim 1, it is characterised in that also include being connected to the upper waistband, described The reinforcing bar of lower waistband and the scraper.
- 6. rotary drilling machine drill bit as claimed in claim 1, it is characterised in that the drilling rod is the rod member of inner hollow.
- 7. rotary drilling machine drill bit as claimed in claim 1, it is characterised in that the cutter assembly includes knife bar and cutting Knife；The knife bar skewed horizontal load is connected to the inner surface of the lower waistband and the bottom of the drilling rod, and the bite is fixedly arranged on The outside of the knife bar and the bottom of the drilling rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720617684.9U CN206860103U (en) | 2017-05-31 | 2017-05-31 | Rotary drilling machine drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720617684.9U CN206860103U (en) | 2017-05-31 | 2017-05-31 | Rotary drilling machine drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206860103U true CN206860103U (en) | 2018-01-09 |
Family
ID=60825506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720617684.9U Active CN206860103U (en) | 2017-05-31 | 2017-05-31 | Rotary drilling machine drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206860103U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165581A (en) * | 2017-06-09 | 2017-09-15 | 上海建工二建集团有限公司 | A kind of GPS drill bit of drilling machine and GPS rig pile foundation drilling construction method |
| CN111877993A (en) * | 2020-08-03 | 2020-11-03 | 中煤特殊凿井有限责任公司 | Novel hook type drag bit |
| CN113669090A (en) * | 2021-08-23 | 2021-11-19 | 中建八局发展建设有限公司 | Anchor rod construction process |
| CN108590533B (en) * | 2018-06-26 | 2024-05-10 | 浙江易通特种基础工程股份有限公司 | Drill bit for construction of bored pile |
-
2017
- 2017-05-31 CN CN201720617684.9U patent/CN206860103U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165581A (en) * | 2017-06-09 | 2017-09-15 | 上海建工二建集团有限公司 | A kind of GPS drill bit of drilling machine and GPS rig pile foundation drilling construction method |
| CN108590533B (en) * | 2018-06-26 | 2024-05-10 | 浙江易通特种基础工程股份有限公司 | Drill bit for construction of bored pile |
| CN111877993A (en) * | 2020-08-03 | 2020-11-03 | 中煤特殊凿井有限责任公司 | Novel hook type drag bit |
| CN113669090A (en) * | 2021-08-23 | 2021-11-19 | 中建八局发展建设有限公司 | Anchor rod construction process |
| CN113669090B (en) * | 2021-08-23 | 2023-05-02 | 中建八局发展建设有限公司 | Anchor rod construction process |
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