CN207673287U - A kind of jet-propelled high-efficiency helical drilling tool - Google Patents
A kind of jet-propelled high-efficiency helical drilling tool Download PDFInfo
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- CN207673287U CN207673287U CN201721463929.3U CN201721463929U CN207673287U CN 207673287 U CN207673287 U CN 207673287U CN 201721463929 U CN201721463929 U CN 201721463929U CN 207673287 U CN207673287 U CN 207673287U
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Abstract
The utility model is related to the drilling technique in the soil body or soft rock, more particularly to a kind of jet-propelled high-efficiency helical drilling tool.The jet-propelled high-efficiency helical drilling tool of the utility model includes jet bit and injecting type auger stem, and one end of the injecting type auger stem and the jet bit are coaxially connected.Advantage：The technical barriers such as energy consumption is big, chip removal is difficult can preferably be solved during Auger drilling, the rate of penetration and chip removal efficiency of Auger drilling can be effectively improved, and suitable for the drilling higher rock-soil layer of moisture content, the technical field of construction such as Auger drilling method preferably serves no-dig technique, ground slip casting and reinforcing, pile foundation and engineering geological investigation sample can be made.
Description
Technical field
This utility model is mainly used for the drilling and forming hole in the soil body or soft rock, can be widely applied to no-dig technique, ground note
A variety of technical field of construction such as slurry and reinforcing, pile foundation, engineering geological investigation sampling, more particularly to a kind of jet-propelled high-efficiency helical
Drilling tool.
Background technology
Spiral drill (AugerBoring Tools) used drilling tool when being Auger drilling, it is mainly by drill bit, core pipe
It is constituted with helical wing plate.Auger (Auger Boring) is a kind of no loop back Drilling Method, suitable for soil layer and soft rock
Layer drilling and forming hole, it is the dry-type mechanical rotary drilling method for storing and conveying drilling cuttings using spiral drill, drilling process mesoporous
Interior no scouring media (drilled dry) also just recycles exclusion drill bit not against scouring media and is crushed the drilling cuttings to get off.Auger drilling can divide
For long screw auger into short Auger drilling two types, long screw auger therein is into referring to spiral drill in axial pressure P (bit pressures
WOB) and under the synergy of flywheel moment N (rotating speed Rotary Speed), drill bit is driven to turn round and cut Rock And Soil, synchronously
Drilling cuttings continuously rises up to earth's surface and is easily discharged out of the hole along helical wing plate under rotary drilling bits drive, and entire drilling process is without carrying
It bores, drill bit is crushed the progress synchronous with discharge two processes of drilling cuttings of Rock And Soil drilling footage, and no repetition is broken, also without head of liquid shadow
It rings, thus drilling efficiency is high；And short Auger drilling refers to spiral drill under the synergy of axial pressure P and flywheel moment N,
Drill bit is driven turn round and cut Rock And Soil, synchronously drilling cuttings continuously rises and temporary in the case where rotary drilling bits drive along helical wing plate
It is stored in the space of helical wing plate formation, when a drilling round trip terminates to carry brill, drilling cuttings is carried simultaneously with a whole set of drilling tool to ground
Table, reversion drilling tool gets rid of the drilling cuttings accumulated in helical wing plate, thus the flow chart of short Auger drilling is that interruption carries out, and is bored
Into efficiency less than long screw auger into but since steering resistance square is small, machine utilization is small, and power consumption is also much smaller.
During Auger drilling, no flushing liquor cycle without stabilizing solution retaining wall, can save the systems such as blender, slush pump
Slurry, recycle unit, thus construction cost can be reduced to a certain extent；Low noise, low vibration when drilling, and without carrying out useless slurry
Processing, can be referred to as qualified " green " construction method.Long screw auger into when, drill bit is crushed Rock And Soil and the same stepping of chip removal
Row, thus it is larger to be consumed in the energy on drilling tool, make its drilling diameter and depth by drilling device limited it is larger (in general,
Aperture is up to 800mm, and hole depth is up to 27.5m)；In comparison, when short Auger drilling, it is consumed in the energy that chip removal is used on drilling tool
It is more much smaller than long spire, thus its steering resistance square, machine utilization and power consumption also will than long screw auger into much smaller,
Allow short Auger drilling to form bigger, deeper drilling (in general, aperture is up to 1.5~2m, hole depth is up to 30m).
Due to many advantages of Auger drilling method so that it has been widely used for no-dig technique, ground slip casting and reinforcing, stake
Multiple technical field of construction such as basis and engineering geological investigation sampling.No-excavation construction method (Trenchless Technology
Or No-Dig) it is the technology that various underground utilities are detected, check, are laid with, repaired and replaced under conditions of not excavating earth surface, it can
It is widely used in passing through the petroleum gas in road, building, rivers and lakes, paleovolcanic structure area etc., water supply and sewage, cable, communication
Laying, detection, reparation and the more new job of the pipelines such as circuit, have do not influence traffic, free from environmental pollution, construction safety it is reliable and
The incomparable many advantages of traditional cut and cover method such as the period is short, overall cost is low, social benefit is notable；Auger drilling method is opened non-
It digs in the operation for being laid with underground utilities, can be directly used for drilling and forming hole, it also can be with push bench process (Pipe Jacking) or other works
Method couples operation, it can be achieved that efficiently drilling and pipelaying work, has played important function in no-excavation construction method field and had
Wide application prospect.Ground slip casting and reinforcing (Grouting and reinforcement ofrock and soil) are
It injects certain in hole, crack or the solutional cavity of Rock And Soil with cementing, curing performance slurries, after its condensation hardening, rises
The sides such as the construction technology, including static pressure grouting, heavy jet grouting, electrochemistry slip casting of the effects that antiseepage, leak stopping, reinforcing and rectifying a deviation
Method, Auger drilling method can be used in mortar depositing construction creeping into the injected hole needed for reperfusion serosity.Pile foundation (Pile
Foundation), it is by foundation pile and to be placed in a kind of deep foundation that the cushion cap of stake top collectively constitutes, for the pile foundation of most types
For, it was both needed to be crept into stake holes before formal pile, other than Auger drilling method can be used to creep into stake holes, screw rod
(line) stake is even more a kind of pile foundation type with excellent performance.Engineering geological investigation samples (Engineering
Geological Exploration and Sampling), it is that Rock And Soil is directly in depth descended to obtain required engineering geology item
Part data verifies the reliable method of geology of deep part situation, is a kind of common field drill sampling method using spiral drill sampling,
It is common in the sampling operation of countryside portable Manual rotary.
Auger is a kind of typical dry drilling method, has higher rate of penetration especially in the dry soil body, but
For the slightly higher soil layer of moisture content, due to the influence of water, the soil body is easy argillization, to generate mud drum effect to drilling tool, reduces and bores
Speed；On the other hand, water can reduce the friction coefficient between drilling cuttings and helical wing plate, thus increase the difficulty of chip removal to a certain extent
Degree, drilling cuttings are easy to slide from helical wing plate and be gathered in bottom hole, reduce drilling speed.In addition, creeping into drying even with auger
The soil body is inevitably made Rock And Soil generate compacted compacted fill ground, is on the one hand increased drill bit due to the influence of axial pressure (bit pressure P)
The difficulty of broken Rock And Soil, on the other hand also increases frictional resistance of the drilling cuttings in helical wing plate uphill process, to increase
Energy consumption during Auger drilling.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of jet-propelled high-efficiency helical drilling tools, effectively overcome
The defect of the prior art.
The technical solution that the utility model solves above-mentioned technical problem is as follows：A kind of jet-propelled high-efficiency helical drilling tool, including
Jet bit and injecting type auger stem, one end of above-mentioned injecting type auger stem and above-mentioned jet bit are coaxially connected.
The utility model has the beneficial effects that：Energy consumption is big during Auger drilling capable of preferably being solved, and chip removal is difficult, carries
The rate of penetration and chip removal efficiency of high Auger drilling can enable Auger drilling method preferably serve no-dig technique, ground note
The technical field of construction such as slurry and reinforcing, pile foundation and engineering geological investigation sampling.
Based on the above technical solution, the utility model can also do following improvement.
Further, above-mentioned jet bit includes central tube, three ladder fins and cutting tooth；
Above-mentioned central tube inner hollow and one end open；
Three above-mentioned ladder fins are circumferentially uniformly arranged on along the length direction of above-mentioned central tube outside above-mentioned central tube respectively
On wall, and each above-mentioned ladder fin and the tangent line of central tube junction are vertical with corresponding ladder fin；
One end of above-mentioned injecting type auger stem is connect with the open end of above-mentioned central tube；
The position that the blind end of above-mentioned central tube is located at above-mentioned cutting tooth both sides is respectively equipped with and its internal first be connected to
Bottom spray orifice；
Above-mentioned ladder fin is set as cascaded surface away from a side end face of above-mentioned central tube, and above-mentioned cascaded surface is along among the above
The direction that the blind end of heart pipe is directed toward open end successively increases；
Be connected to the inside of above-mentioned central tube is evenly equipped on above-mentioned ladder fin both sides and above-mentioned cascaded surface respectively
One spray-hole.
Advantageous effect using above-mentioned further scheme is that jet bit is simple in structure, and broken rock and soil effect is good, can be had
The dry Rock And Soil of effect, alleviates the compacted pressure generated to Rock And Soil due to the influence of the synergy of axial pressure P and flywheel moment N
Actual effect is answered, and the compactness of Rock And Soil is reduced, and contributes to broken and drilling cuttings the exclusion of Rock And Soil, can be reduced ladder fin and returned
Turn frictional heat when cutting is crushed Rock And Soil, contributes to the service life for extending drill bit, it can be at ladder flap surface and center
The near wall in tube bottom face forms air film, help somewhat to reduce Rock And Soil, drilling cuttings and ladder fin and in
Frictional resistance between heart bottom of the tube wall surface is beneficial with energy-saving and emission-reduction to contribute to the energy consumption during reduction Auger drilling
Effect.
Further, the cavity for being equipped with inside each above-mentioned ladder fin and being connected to inside above-mentioned central tube, above-mentioned first
Bottom spray orifice and the first spray-hole are connected to by the cavity inside above-mentioned ladder fin with the inside of above-mentioned central tube respectively.
Advantageous effect using above-mentioned further scheme is that design is simple, reasonable, convenient for the first bottom spray orifice and the first injection
Hole respectively with the connection of central tube.
Further, above-mentioned injecting type auger stem includes core pipe and helical wing plate, and above-mentioned core pipe is the tube body of both ends open,
One end and the open end of above-mentioned central tube are connected to and in communication with, and above-mentioned helical wing plate is in spiral shell from one end of above-mentioned core pipe to the other end
Revolve the setting of shape in above-mentioned core pipe, there is in above-mentioned helical wing plate matched spiral helicine cavity, above-mentioned core pipe it is outer
Wall, which is equipped with, to be connected to the matched spiral helicine inlet chamber of above-mentioned helical wing plate, above-mentioned inlet chamber with the inside of above-mentioned core pipe, on
It states cavity to be connected to above-mentioned inlet chamber, the both sides of every above-mentioned helical wing plate are evenly equipped with multiple with its connects with the internal cavities respectively
Second spray-hole, the position on above-mentioned core tube wall between the above-mentioned helical wing plate of adjacent two panels are evenly equipped with multiple connections in it
The third spray-hole in portion.
Advantageous effect using above-mentioned further scheme is that injecting type auger stem is simple in structure, by core pipe respectively through second
The air-flow that spray-hole and third spray-hole eject will bear directly against the brill for being stored in helical wing plate and being in contact with core pipe
On bits, can play simultaneously dry cuttings, reduce drilling cuttings compacted compacted fill ground, increase drilling cuttings along helical wing plate rising thrust,
Air film can be formed near core tube wall face to reduce frictional resistance between drilling cuttings and core tube wall, reduce chip removal energy consumption, is energy saving
The multiple beneficials effect such as emission reduction.
Further, what whole above-mentioned third spray-holes was equidistantly spaced in the shape of a spiral is distributed on above-mentioned core tube wall.
Advantageous effect using above-mentioned further scheme is rationally distributed so that third spray-hole can be evenly arranged in core
Guan Shang, it is ensured that core pipe often locates all have preferable chip removal effect.
Further, the open end of above-mentioned central tube is integrally formed equipped with the hollow threaded connection section communicated therewith,
There is internal thread on inside, there is on one end outer wall of above-mentioned core pipe external screw thread, the threaded one end of above-mentioned core pipe is connected to above-mentioned
In threaded connection section.
Advantageous effect using above-mentioned further scheme is that design is simple, and central tube is easy to connect with core pipe.
Further, the open end periphery of above-mentioned central tube is equipped with first flange disk, is set on one end periphery of above-mentioned core pipe
There are second flange disk, one end of above-mentioned core pipe to be docked with the open end of above-mentioned central tube, above-mentioned first flange disk and second flange
Fixation is bolted in disk, and clips are equipped with sealing ring between the two.
Advantageous effect using above-mentioned further scheme is that design is simple, and central tube is connect with core pipe than stronger.
Further, outside the open end of above-mentioned central tube coaxial sleeve be equipped with circular ring shape supporting rack, above-mentioned supporting rack respectively with
Three above-mentioned ladder fins are connected and fixed away from one end end face at above-mentioned center duct occlusion end.
Advantageous effect using above-mentioned further scheme is to promote the soundness of ladder fin, it is ensured that the warp of entire drill bit
It is durable long.
Description of the drawings
Fig. 1 is the overall structure diagram of the jet-propelled high-efficiency helical drilling tool of the utility model；
Fig. 2 is the upward view of the jet-propelled high-efficiency helical drilling tool of the utility model；
The jet-propelled high-efficiency helical drilling tool and structural representation when push bench process cooperation drilling lateral aperture that Fig. 3 is the utility model
Figure；
Fig. 4 is the structural exploded view of the jet-propelled high-efficiency helical drilling tool of the utility model；
Fig. 5 be the utility model jet-propelled high-efficiency helical drilling tool in jet bit one embodiment axonometric drawing；
Fig. 6 be the utility model jet-propelled high-efficiency helical drilling tool in jet bit another embodiment axonometric drawing；
Fig. 7 be the utility model jet-propelled high-efficiency helical drilling tool in injecting type auger stem structural schematic diagram；
Fig. 8 be the utility model jet-propelled high-efficiency helical drilling tool in injecting type auger stem sectional view.
In attached drawing, parts list represented by the reference numerals are as follows：
1, jet bit, 2, injecting type auger stem, 3, pipeline, 4, sealing ring, 11, central tube, 12, ladder fin,
13, cutting tooth, 14, threaded connection section, 15, first flange disk, 16, supporting rack, 21, core pipe, 22, helical wing plate, 111, first
Bottom spray orifice, the 121, first spray-hole, 211, inlet chamber, 212, third spray-hole, 213, second flange disk, the 221, second injection
Hole.
Specific implementation mode
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining this practicality
It is novel, it is not intended to limit the scope of the utility model.
Embodiment：As shown in 1,2,3,4,7,8 figures, the jet-propelled high-efficiency helical drilling tool of the present embodiment, including injecting type bore
First 1 and injecting type auger stem 2, one end of above-mentioned injecting type auger stem 2 and above-mentioned jet bit 1 it is coaxially connected.
Above-mentioned jet bit 1 includes 11, three ladder fins 12 of central tube and cutting tooth 13；
11 inner hollow of above-mentioned central tube and one end open；
Three above-mentioned ladder fins 12 are circumferentially uniformly arranged on above-mentioned center along the length direction of above-mentioned central tube 11 respectively
On 11 outer wall of pipe, and the tangent line of each 11 junction of above-mentioned ladder fin 12 and central tube is vertical with corresponding ladder fin 12；
One end of above-mentioned injecting type auger stem 2 is connect with the open end of above-mentioned central tube 11；
The position that the blind end of above-mentioned central tube 11 is located at 13 both sides of above-mentioned cutting tooth is respectively equipped with and internal is connected to it
First bottom spray orifice 111；
Above-mentioned ladder fin 12 is set as cascaded surface away from a side end face of above-mentioned central tube 11, and above-mentioned cascaded surface is along upper
The direction for stating the blind end direction open end of central tube 11 successively increases；
It is evenly equipped on above-mentioned 12 both sides of ladder fin and above-mentioned cascaded surface and is connected to the inside of above-mentioned central tube 11 respectively
The first spray-hole 121.
Above-mentioned injecting type auger stem 2 includes core pipe 21 and helical wing plate 22, and above-mentioned core pipe 21 is the tube body of both ends open,
One end and the open end of above-mentioned central tube 11 are connected to and in communication with, and above-mentioned helical wing plate 22 is from one end of above-mentioned core pipe 21 to another
It holds spiral setting in above-mentioned core pipe 21, there is matched spiral helicine cavity in above-mentioned helical wing plate 22, on
State core pipe 21 outer wall be equipped with the matched spiral helicine inlet chamber 211 of above-mentioned helical wing plate 22, above-mentioned inlet chamber 211 with it is upper
The inside connection of core pipe 21 is stated, above-mentioned cavity is connected to above-mentioned inlet chamber 211, and the both sides difference of every above-mentioned helical wing plate 22 is equal
Multiple and its connects with the internal cavities the second spray-holes 221 are furnished with, are located at the above-mentioned spiral of adjacent two panels on 21 outer wall of above-mentioned core pipe
Position between fin 22 is evenly equipped with third spray-hole 212 of multiple its inside of connection.
Before construction, according to the direction that will drill on the contrary, installing jet bit 1, injecting type auger stem 2 successively
(can make up a joint, can be also spliced by more connections are axial) and other auxiliary devices (including：Drilling machine, air compressor machine or air pump,
Air supply hose, dynamic seal joint etc.).It is to be noted that：Since the utility model needs to use compressed air, thus implementing
During the entire process of Auger drilling, the air-tightness of entire drilling tool access don't fail to be ensured, when drilling, axial pressure P (bit pressures
WOB), flywheel moment N (rotating speed Rotary Speed) and the volume of air supply Q of air compressor machine or air pump are both needed to be determined by experiment, can be
It is adjusted flexibly according to actual conditions in drilling process, can ensure to drill normal drilling depth and drilling cuttings smoothly excludes to join as adjustment
Several foundations can both creep into vertical holes using the utility model, can also creep into lateral aperture；In general, pile foundation hole, engineering geology
Prospecting sampling is mostly vertical holes, and non-excavation laying underground utilities are mostly lateral aperture；And ground slip casting and the existing vertical holes of reinforcing
Situations such as having the drilling of lateral aperture or other angles, regarding stratum and underground water synthesis determination.Specifically：
(1) embodiment of the utility model is illustrated for creeping into vertical holes：It is whole all parts composition has been sequentially connected with
Drilling tool is covered, starts and is placed in the drilling machine, air compressor machine or air pump on (ground) in the hole outside, the gyrator drive injecting type auger stem 2 of drilling machine,
Jet bit 1 turns round, required axial pressure P (bit pressure WOB) and flywheel moment N (rotating speeds when by drilling machine offer Auger drilling
Rotary Speed), provide compressed air by air compressor machine or air pump.12 rotatable cutting ground of cutting tooth 13 and ladder fin
Body, the air-flow ejected by the first bottom spray orifice 111 can auxiliary cutting element 13 be crushed the Rock And Soil of bottom hole, while additionally aiding mitigation
The compacted compacted fill ground of bottom hole Rock And Soil excludes drilling cuttings, reduces cutting tooth 13 and the heating after Rock And Soil friction；By ladder fin
The air-flow that the first spray-hole 121 on 12 both sides and above-mentioned cascaded surface ejects can assist ladder fin 12 to be crushed bottom hole and hole
Rock And Soil arround wall, while additionally aiding the compacted compacted fill ground of the lightening hole bed rock soil body, exclude drilling cuttings, reduce ladder fin
12 with Rock And Soil friction after heating.It is ejected by the first spray-hole 121 on 12 both sides of ladder fin and above-mentioned cascaded surface
Air-flow ladder fin 12 can be assisted to be crushed the Rock And Soil arround bottom hole and hole wall, while additionally aid lightening hole bottom and hole wall week
By the compacted compacted fill ground of Rock And Soil, exclusion drilling cuttings, reduce ladder fin 12 and the heating after Rock And Soil friction.By cutting tooth 13
And the drilling cuttings generated after the revolution cutting Rock And Soil drilling and forming hole of ladder fin 12 is through between three mutual ladder fins 12 in 120 °
Region (three mutually can form drilling cuttings drainage groove in the region between 120 ° of ladder fins 12) squeeze into injecting type auger stem 2
Front end area, and with drilling process continue to carry out progress into helical wing plate 22, drilling cuttings will be along helical wing plate 22
Gradually rise；In the process, the air-flow ejected by the second spray-hole 221 and third spray-hole 212 will bear directly against storage
There are on the drilling cuttings in 22 section of helical wing plate, can play dry cuttings, the compacted compacted fill ground for reducing drilling cuttings simultaneously, increase and bore
The rising thrust of bits is formed about air film and can reduce drilling cuttings and their outer walls in the outside wall surface of core pipe 21 and helical wing plate 22
Between frictional resistance, reduce the multiple beneficials effects such as chip removal energy consumption, energy-saving and emission-reduction；Finally, by being placed in the injection of spiral drill front end
The drilling cuttings that formula drill bit 1 generates, will along injecting type auger stem 2 it is continuous on return and be easily discharged out of the hole, thus can realize drilling with
The synchronous of chip removal carries out, and accelerates the construction speed of drilling.
What it is according to the utility model construction is pile foundation hole, after the requirement hole to be drilled to projected depth, can be carried out subsequent
The processes such as borehole cleaning, decentralization steel reinforcement cage, concrete perfusion pile；What it is according to the utility model construction is engineering geological investigation sampling
Drilling, other than drilling machine can be used, for ease of field sampling operation, also visual strata condition adds turning handle on drilling tool top
Hand, then turned round by manpower and carry out bore operation；If what is constructed using the utility model is ground slip casting and reinforced hole, it is hole to be drilled extremely
After projected depth requires, you can carry out subsequent tripping in grouting tube, place grouting plug, the processes such as reperfusion serosity into stratum.
(2) as shown in figure 3, illustrating the embodiment of the utility model for creeping into lateral aperture：Main operating process
It is similar when with drilling vertical hole, it should be pointed out that the construction of non-excavation laying underground utilities is carried out according to the utility model
Operation can also coordinate other suitable engineering methods to use simultaneously other than the drilling that individually can carry out lateral aperture, below to coordinate top
It is illustrated for tube method：First, the starting working pit or vertical shaft that suitable position excavation specification is suitable on construction ground are needed,
The utility model, hydraulic push bench, drilling machine and several segment pipes 3 are placed in starting working pit or vertical shaft, hydraulic top therein
Pipe machine is used for the jacking of pipeline 3；The outer diameter of the utility model should match with the internal diameter of pipeline 3, and the utility model is placed in pipe
In road 3, push-bench, drilling machine, air compressor machine or air pump, while hydraulic push bench jacking pipeline 3 forward paragraph by paragraph, this practicality are opened
It is novel to synchronize realization drilling and chip removal two procedures, after pipelaying work to be done, what the utility model can be drilled to by drilling machine edge
Drilling, which is fallen back, takes out, then is hung to the utility model, hydraulic push bench, drilling machine etc. from starting working pit or vertical shaft by lifting appliance
Ground, to save the process excavated and receive working pit or vertical shaft, whole process greatly accelerates non-excavation laying underground utilities
Construction speed.
When being drilled using the utility model, it is above-mentioned by being arranged on jet bit 1 and injecting type auger stem 2 the
The gas jet that one bottom spray orifice 111, the first spray-hole 121, third spray-hole 212 and the second spray-hole 221 eject can be simultaneously
Realize following six kinds of advantageous effects：1. assisting the drill bit kata-rocks soil body；2. dry Rock And Soil.It is to be noted that：Work as Rock And Soil
Water content it is higher when can also inject hot-air, to enhance to the drying effect of Rock And Soil；3. alleviating since axial pressure P (is bored
Pressure WOB) and flywheel moment N (rotating speed Rotary Speed) synergy influence compacted compacting effect that Rock And Soil is generated
It answers, reduces the compactness of Rock And Soil (the especially soil body), contribute to broken and drilling cuttings the exclusion of Rock And Soil；4. interval is set to 3
First spray-hole 121 of a 12 both sides of ladder fin may be configured as skewed, and inclined direction and drilling direction are on the contrary, tilt
Direction and drilling cuttings to exclude direction consistent, in this way when drilling cuttings migrate along " drilling cuttings drainage groove " by along chip removal guide groove inclination cloth
If the first spray-hole 121 spray air-flow can play the role of increase drilling cuttings along exclude direction move thrust, help to bore
The smooth exclusion of bits；5. can reduce ladder fin 12 cuts frictional heat when being crushed Rock And Soil in revolution, helps to extend and bore
The service life of head；6. air film can be formed in the near wall on 12 surface of ladder fin, 11 bottom surface of central tube and core pipe 21,
It helps somewhat to reduce between Rock And Soil, 12 surface of drilling cuttings and ladder fin, 21 surface of 11 bottom of central tube and core pipe
Frictional resistance, to contribute to reduce Auger drilling during equipment energy consumption, with energy-saving and emission-reduction advantageous effect.
Preferably, the cavity body being connected to 11 inside of above-mentioned central tube is equipped with inside each above-mentioned ladder fin 12, on
The first bottom spray orifice 111 and the first spray-hole 121 are stated respectively by cavity body inside above-mentioned ladder fin 12 and above-mentioned central tube
11 interior bone connection so that current path can be realized in the inside of entire drill bit, can reduce manufacture to a certain extent
Difficulty.
Above-mentioned central tube 11 and ladder fin 12 are connected by the way of welding, can also be that other can ensure that connection is strong
The connection type of degree and air-tightness.
Preferably, being distributed in outside above-mentioned core pipe 21 of being equidistantly spaced in the shape of a spiral of whole above-mentioned third spray-holes 212
On wall, which enables third spray-hole 212 uniformly, comprehensively to cover on 21 outer surface of core pipe, can effectively reduce
Frictional resistance between 21 surface of core pipe and drilling cuttings, to be conducive to the exclusion to drilling cuttings and energy-saving and emission-reduction.
In some embodiments, as shown in figure 5, integrally formed be equipped in the open end of above-mentioned central tube 11 communicates therewith
Hollow threaded connection section 14 has internal thread on 14 inner wall of threaded connection section, has on one end outer wall of above-mentioned core pipe 21 outer
The threaded one end of screw thread, above-mentioned core pipe 21 is connected in above-mentioned threaded connection section 14, and need to illustrate need to twine in advance at screw thread
Around raw material band/rope made of hemp both to ensure the air-tightness of junction, the structure is convenient for central tube 11 and the connection of core pipe 14 and is connected to,
It is very convenient.
In further embodiments, as shown in fig. 6, the open end periphery of above-mentioned central tube 11 is equipped with first flange disk
15, one end periphery of above-mentioned core pipe 21 is equipped with second flange disk 213, and one end of above-mentioned core pipe 21 is opened with above-mentioned central tube 11
The docking of mouth end, above-mentioned first flange disk 15 and second flange disk 213 are bolted, and are equipped with sealing ring 4 between the two, should
Design to be connected firmly between central tube 11 and core pipe 21 and air-tightness is good, but its installation is relatively cumbersome.
Preferably, coaxial sleeve is equipped with the supporting rack 15 of circular ring shape, above-mentioned supporting rack 15 outside the open end of above-mentioned central tube 11
It is connected and fixed respectively away from one end end face of 11 blind end of above-mentioned central tube with three above-mentioned ladder fins 12, which passes through branch
Support 15 makes three ladder fins 12 be linked together, and improves its whole structural strength, reduces the ladder wing in drilling
The failure rate of piece.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (7)
1. a kind of jet-propelled high-efficiency helical drilling tool, it is characterised in that：Including jet bit (1) and injecting type auger stem (2),
One end of the injecting type auger stem (2) and the jet bit (1) are coaxially connected；
The jet bit (1) includes central tube (11), three ladder fins (12) and cutting tooth (13)；
Central tube (11) inner hollow and one end open；
Length direction of three ladder fins (12) respectively along the central tube (11) is circumferentially uniformly arranged on the center
It manages on (11) outer wall, and tangent line and the corresponding ladder fin of each the ladder fin (12) and central tube (11) junction
(12) vertical；
One end of the injecting type auger stem (2) is connect with the open end of the central tube (11)；
The position that the blind end of the central tube (11) is located at the cutting tooth (13) both sides is respectively equipped with and internal is connected to it
First bottom spray orifice (111)；
The ladder fin (12) is set as cascaded surface away from a side end face of the central tube (11), and the cascaded surface is along institute
The direction for stating the blind end direction open end of central tube (11) successively increases；
It is evenly equipped on ladder fin (12) both sides and the cascaded surface and is connected to the inside of the central tube (11) respectively
The first spray-hole (121).
2. a kind of jet-propelled high-efficiency helical drilling tool according to claim 1, it is characterised in that：Each ladder fin
(12) the internal cavity for being equipped with and being connected to inside the central tube (11), first bottom spray orifice (111) and the first spray-hole
(121) it is connected to respectively with the inside of the central tube (11) by the internal cavity of the ladder fin (12).
3. a kind of jet-propelled high-efficiency helical drilling tool according to claim 1, it is characterised in that：The injecting type auger stem
(2) include core pipe (21) and helical wing plate (22), the core pipe (21) is the tube body of both ends open, one end and the central tube
(11) open end is connected to and in communication with, and the helical wing plate (22) is set from one end of the core pipe (21) to the other end in the shape of a spiral
It sets in the core pipe (21), there is matched spiral helicine cavity, the core pipe (21) in the helical wing plate (22)
Outer wall be equipped with the matched spiral helicine inlet chamber (211) of the helical wing plate (22), the inlet chamber (211) with it is described
The inside of core pipe (21) is connected to, and the cavity is connected to the inlet chamber (211), the both sides point of the every helical wing plate (22)
It is not evenly equipped with multiple and its connects with the internal cavities the second spray-holes (221), is located at adjacent two panels on core pipe (21) outer wall
Position between the helical wing plate (22) is evenly equipped with third spray-hole (212) of multiple its inside of connection.
4. a kind of jet-propelled high-efficiency helical drilling tool according to claim 3, it is characterised in that：Whole third injections
What hole (212) was equidistantly spaced in the shape of a spiral is distributed on the core pipe (21) outer wall.
5. a kind of jet-propelled high-efficiency helical drilling tool according to claim 4, it is characterised in that：Central tube (11) are opened
Mouth end is integrally formed equipped with the hollow threaded connection section (14) communicated therewith, and threaded connection section (14) inner wall has interior
There is on one end outer wall of the core pipe (21) screw thread external screw thread, the threaded one end of the core pipe (21) to be connected to the screw thread
In linkage section (14).
6. a kind of jet-propelled high-efficiency helical drilling tool according to claim 5, it is characterised in that：Central tube (11) are opened
Mouth end periphery is equipped with first flange disk (15), and one end periphery of the core pipe (21) is equipped with second flange disk (213), described
One end of core pipe (21) is docked with the open end of the central tube (11), the first flange disk (15) and second flange disk
(213) fixation is bolted, and clips are equipped with sealing ring (4) between the two.
7. a kind of jet-propelled high-efficiency helical drilling tool according to any one of claims 1 to 6, it is characterised in that：The center
Manage the supporting rack (16) of the outer coaxial sleeve in open end equipped with circular ring shape of (11), support frame as described above (16) respectively with three ladders
Fin (12) is connected and fixed away from one end end face of the central tube (11) blind end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721463929.3U CN207673287U (en) | 2017-11-06 | 2017-11-06 | A kind of jet-propelled high-efficiency helical drilling tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721463929.3U CN207673287U (en) | 2017-11-06 | 2017-11-06 | A kind of jet-propelled high-efficiency helical drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207673287U true CN207673287U (en) | 2018-07-31 |
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ID=62964068
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721463929.3U Expired - Fee Related CN207673287U (en) | 2017-11-06 | 2017-11-06 | A kind of jet-propelled high-efficiency helical drilling tool |
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| Country | Link |
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| CN (1) | CN207673287U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138846A (en) * | 2018-10-17 | 2019-01-04 | 北京探矿工程研究所 | Double-core drilling tool with three blades |
| CN113481975A (en) * | 2021-07-12 | 2021-10-08 | 中交一公局集团有限公司 | Air-entraining stirring pore-forming construction method for cement stirring pile |
-
2017
- 2017-11-06 CN CN201721463929.3U patent/CN207673287U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138846A (en) * | 2018-10-17 | 2019-01-04 | 北京探矿工程研究所 | Double-core drilling tool with three blades |
| CN109138846B (en) * | 2018-10-17 | 2023-09-15 | 北京探矿工程研究所 | Double-core drilling tool with three blades |
| CN113481975A (en) * | 2021-07-12 | 2021-10-08 | 中交一公局集团有限公司 | Air-entraining stirring pore-forming construction method for cement stirring pile |
| CN113481975B (en) * | 2021-07-12 | 2022-01-28 | 中交一公局集团有限公司 | Air-entraining stirring pore-forming construction method for cement stirring pile |
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