CN208650790U - A kind of long spire pore-forming drill - Google Patents
A kind of long spire pore-forming drill Download PDFInfo
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- CN208650790U CN208650790U CN201821400749.5U CN201821400749U CN208650790U CN 208650790 U CN208650790 U CN 208650790U CN 201821400749 U CN201821400749 U CN 201821400749U CN 208650790 U CN208650790 U CN 208650790U
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- drilling rod
- drill
- drill bit
- long spire
- pore
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Abstract
The utility model belongs to building lot and foundation construction equipment technology field, concretely discloses a kind of long spire pore-forming drill.Its main technical schemes: the structure for constituting long spire pore-forming drill includes: drill bit, drilling rod, drill bit power mechanism and its pile frame, the concrete conveyance elbow of jointed rod；Above-mentioned concrete conveyance heel is provided with pressurized gas inlet, at least two stomatas are set on the center-pole of above-mentioned drilling rod lower end or the drill bit.The long spire pore-forming drill can effectively avoid drill bit position from becoming the generation of vacuum state phenomenon, and the soil of bit cutting is enabled to rise to ground with blade.
Description
Technical field
The utility model belongs to building lot and foundation construction equipment technology field, is concretely related to a kind of suitable for height
The long spire pore-forming drill to drill in cohesive soil.
Background technique
In pile foundation construction, long spire pore-forming is to drive auger stem, drill bit by drill power head, turn helical blade
It is sliced under trend, is cut soil and rises with bit along helical blade, and a kind of process outside automatic delivery outlet.Although long
Spiral pore-forming is applicable in a variety of soil layers, such as sandy soil, silt, clay, muck soil, miscellaneous fill；But as pore-forming it is deeper when, pore-forming
When being relatively large in diameter (stake holes of such as one meter diameter above) or when encountering high viscosity soil, it is very slow that long spire advances downwardly speed,
It can not even creep into, phenomena such as drilling rod idle running, bit freezing occur.Especially when deep hole, major diameter, high viscosity soil etc. occur simultaneously,
Drilling rod bit freezing becomes frequent phenomenon.To find out its cause, being bored since high viscosity soil is by entire drilling rod locking, and drilling peripheral containment
Head position becomes vacuum state, and the soil of bit cutting cannot rise with blade, and soil cannot be replaced, and drilling rod bit freezing is caused
Or idle running phenomenon.
Utility model content
The purpose of this utility model be just to provide one kind can effectively avoid drill bit position become vacuum state and drill bit is cut
The soil cut can rise long spire pore-forming drill with blade.
To achieve the above object, technical solution provided by the utility model are as follows:
A kind of long spire pore-forming drill, structure include:
Including drill bit, drilling rod, drill bit power mechanism and pile frame, the concrete conveyance elbow of the drilling rod is connected；Described
Concrete conveyance heel is provided with pressurized gas inlet, is arranged on the center-pole of the drilling rod lower end or the drill bit
At least two stomatas.
In constituting a kind of above-mentioned structure of long spire pore-forming drill,
--- the pressurized gas inlet is set to the top of the concrete conveyance heel and is provided with switch valve
Door；
--- the stomata being arranged on the center-pole of the drilling rod lower end or the drill bit is symmetrical arranged；
--- the axial axial direction with the drilling rod of the stomata of the drilling rod lower end setting is spent in 60-90；
--- the axial axial direction with the drilling rod of the stomata of the drilling rod lower end setting is spent in 60-75.
Long spire pore-forming drill provided by the utility model compared with prior art, have the following characteristics that first, due to
At least two stomatas are set on the drilling rod lower end on drill bit top or the center-pole of composition drill bit, it is defeated by being set to concrete
It send the pressurized gas inlet of heel to apply pressure-air to the position, makes to form seam between the soil body of bit cutting and drilling rod
Gap is generated between gap or drilling rod and surrounding soil, increase along spiral fan the soil body of bit cutting, is effectively avoided drill bit
Position becomes vacuum state, realizes the function that soil is delivered to ground；Second, due to the stomata of above-mentioned drilling rod lower end setting
The axial axial direction with drilling rod is spent in 60-75, therefore the drill bit that can effectively realize that high pressure gas connects drilling rod and lower part is glutinous
Native adhesion is effectively peeled off.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of long spire pore-forming drill provided by the utility model；
Fig. 2 is the attachment structure schematic diagram for constituting Fig. 1 drill bit of drilling machine and drilling rod；
Fig. 3 is the structural schematic diagram for constituting Fig. 1 drill bit of drilling machine.
Specific embodiment
The structure and working principle of long spire pore-forming drill provided by the utility model are done further with reference to the accompanying drawing
It is described in detail.
As shown in Figure 1, 2, the structural schematic diagram of long spire pore-forming drill provided by the utility model.Constitute the long spire
The structure of pore-forming drill includes drill bit 1, drilling rod 2, drill bit power mechanism 3 and pile frame 4, is connected by above-mentioned power mechanism 3 with drilling rod 2
The concrete conveyance elbow 5 connect；The pressurized gas inlet provided with ball valve switch 6 is fixed in above-mentioned concrete conveyance heel
7, which can be connected to high-pressure air source realizes that high pressure gas is conveyed by drilling rod to its underpart, the lower end of drilling rod
At least two high pressure stomatas 81,82 that portion (preferably with the top at the drill bit place of being connected and fixed) setting is evenly arranged.
The working principle of above-mentioned a kind of long spire pore-forming drill are as follows: two are preferably opened on the long screw drill rod near drill bit
A diameter is in 10mm aperture 81,82 below, by applying pressure-air to the position, make bit cutting the soil body and drilling rod it
Between formed and generate gap between gap or drilling rod and surrounding soil, increase along spiral fan 10 soil body of bit cutting, most
Soil is delivered to ground at last.The internal diameter 25mm-30mm seamless steel pipe 11 with ball valve 6 is set in concrete conveyance elbow, it is high
Thus body of calming the anger enters drilling rod；The drilling rod 2 that high pressure gas passes through sealing；Pass through two apertures spray of drilling rod bottom near drill bit
Out；Wherein, for high-pressure air pressure in 0.5mpa-1.5mpa range, then drill bit drilling is fast for pressure height, on the contrary then slow.Utilize the knot
The drilling machine of structure can effectively solve the problems, such as the pore-forming of long spire under high viscosity soil.
As shown in Fig. 2, in the structure for constituting above-mentioned long spire pore-forming drill, the stomata 81 of above-mentioned drilling rod lower end setting
(82) the axial F2 of axial F8 and the drilling rod 2 is in the included angle As of 60-90 degree, can be with by the high pressure draught that sprays in stomata
Realize the removing to the clay being adhered on drilling rod and drill bit；But when the angle is spent in 60-75, that is, high pressure draught sprays
When directly the clay on drill bit can be removed, effect is more preferable.
In the structure for constituting above-mentioned long spire pore-forming drill, the high pressure draught of ejection is realized and is especially to being adhered to drilling rod
The stomata 8 that clay on drill bit is removed can be as shown in figure 3, be set on the center-pole 9 of the drill bit, i.e., symmetrically to set
Setting two on center-pole 9 stomatas 81,82 equally may be implemented the purpose of this utility model.
Claims (5)
1. a kind of long spire pore-forming drill, structure include:
Including drill bit, drilling rod, drill bit power mechanism and pile frame, the concrete conveyance elbow of the drilling rod is connected；It is characterized by:
The concrete conveyance heel is provided with pressurized gas inlet, in the drilling rod lower end or the center-pole of the drill bit
At least two stomatas of upper setting.
2. a kind of long spire pore-forming drill as described in claim 1, it is characterised in that: the pressurized gas inlet is set to
The top of the concrete conveyance heel is simultaneously provided with controlled valve.
3. a kind of long spire pore-forming drill as described in claim 1, it is characterised in that: the drilling rod lower end or the drill bit
Center-pole on the stomata that is arranged be symmetrical arranged.
4. a kind of long spire pore-forming drill as described in claim 1, it is characterised in that: the stomata of the drilling rod lower end setting
The axial axial direction with the drilling rod is spent in 60-90.
5. a kind of long spire pore-forming drill as described in claim 1, it is characterised in that: the stomata of the drilling rod lower end setting
The axial axial direction with the drilling rod is spent in 60-75.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821400749.5U CN208650790U (en) | 2018-08-29 | 2018-08-29 | A kind of long spire pore-forming drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821400749.5U CN208650790U (en) | 2018-08-29 | 2018-08-29 | A kind of long spire pore-forming drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208650790U true CN208650790U (en) | 2019-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821400749.5U Active CN208650790U (en) | 2018-08-29 | 2018-08-29 | A kind of long spire pore-forming drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208650790U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523688A (en) * | 2020-11-06 | 2021-03-19 | 中国海洋大学 | Efficient and environment-friendly long spiral rock-socketed pile machine |
-
2018
- 2018-08-29 CN CN201821400749.5U patent/CN208650790U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523688A (en) * | 2020-11-06 | 2021-03-19 | 中国海洋大学 | Efficient and environment-friendly long spiral rock-socketed pile machine |
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