CN104453717B - Long auger drilling and bottom expanding device and expanded anchor rod construction method - Google Patents
Long auger drilling and bottom expanding device and expanded anchor rod construction method Download PDFInfo
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- CN104453717B CN104453717B CN201410691456.7A CN201410691456A CN104453717B CN 104453717 B CN104453717 B CN 104453717B CN 201410691456 A CN201410691456 A CN 201410691456A CN 104453717 B CN104453717 B CN 104453717B
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 238000005553 drilling Methods 0.000 title abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000012546 transfer Methods 0.000 claims abstract description 5
- 239000011083 cement mortar Substances 0.000 claims description 19
- 239000004568 cement Substances 0.000 claims description 12
- 239000011440 grout Substances 0.000 claims description 10
- 239000004570 mortar (masonry) Substances 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 7
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 5
- 230000002459 sustained effect Effects 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 abstract description 7
- 239000002002 slurry Substances 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 210000001364 upper extremity Anatomy 0.000 description 19
- 238000005516 engineering process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0038—Production methods using an auger, i.e. continuous flight type
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a long auger drilling and bottom expanding device and an expanded anchor rod construction method. The long auger drilling and bottom expanding device comprises an auger drilling rod with an auger blade and a front guide drill bit. The upper portion of the auger drilling rod is connected with a power box of a pile machine through a rotary connector, a slurry inlet is formed in the rotary connector, motors are arranged on the two sides of the upper portion of the power box, a broaching oil cylinder support and a broaching oil cylinder are arranged in the middle of the upper portion of the power box, a connecting lug is arranged in the middle of the upper portion of the oil cylinder support, the broaching oil cylinder is hinged to the broaching oil cylinder support through the connecting lug, the lower end of a piston rod of the broaching oil cylinder is connected with the top of a broaching connecting rod through a transfer connector, the lower portion of the broaching connecting rod is arranged in an axial central through hole of the auger drilling rod, a rotary broaching device is arranged between the front guide drill bit and the auger drilling rod, the lower end of the broaching connecting rod is connected with the rotary broaching device, and the lower portion of the rotary broaching device is connected with the front guide drill bit. According to the long auger drilling and bottom expanding device and the expanded anchor rod construction method, noise, vibration and slurry are avoided in the construction process, an anchoring body is high in strength, good in quality, low in cost, high in working efficiency and good in environmental friendliness, and the uplift bearing capability of an anchor rod is high.
Description
Technical field
The invention belongs to engineering construction technology field, relate to a kind of long auger base expanding and base expanding device and utilization should
The construction of device construction enlarging anchor rod.
Background technology
In Geotechnical Engineering field, the side slope of many, Support of Foundation Pit Excavation engineering, and resisting buoyancy of foundation is forever
For a long time in structure, it is required for using anchorage technology.The total length isodiametric anchoring work that the most a large amount of employings are traditional
Skill, in the stratum that engineering geological condition is complex, as being arranged at the anchor pole in weak scall, is subject to
The factors such as anchoring section frictional force is relatively low restrict, and cause anchor pole anti-pulling capacity on the low side, and deflection is relatively big, tradition
Anchoring technique generally use the method increasing the length of unit bolt or pipe-following drilling to solve problems, from
And cause rising and the waste of anchor pole material of construction cost, it is unfavorable for energy-saving and emission-reduction.At present, China opens
Send some and expand body anchoring construction technique, generally use mud off mechanical hole reaming or high-pressure rotary-spray reaming,
Placing the pile-formation process of slip casting in anchor rod body hole again, the former typically to design in more stable stratum,
Wanting secondary UR drilling tool after common section anchor hole pore-forming, speed of application is slow, and construction cost is high；The latter adapts to
Geological conditions is wide, but churning reaming to be completed needs repeatedly landing drilling tool to complete, and produces in reaming procedure
Substantial amounts of discarded slurry, pollutes environment and construction cost is high.Prior art does not also have one executed by long spire
The technology that work technique combines with reaming construction technology, and enlarging anchor rod construction can be applied to, to reach contracting
Short bolt length, improve single anchor anti-pulling capacity, solve simultaneously speed of application, mud contamination and vibration,
The purpose of the problem in terms of the construction benefits such as noise and environmental protection.
Summary of the invention
The present invention is contemplated to solve the above-mentioned problems in the prior art, it is provided that a kind of long auger expands
End device and hole are laid the construction of anchor rod body, to overcome in existing construction technology after perfusion mortar
During row reaming section reaming, needing secondary UR drilling tool, speed of application is slow, and construction cost is high, and pore-forming,
Reaming procedure uses mud circulation produce a large amount of useless slurry and pollute the problem of environment, expansion body provided by the present invention
Anchor bolt construction engineering method work progress noiselessness, friction, without mud, anchoring body intensity is high, quality is good, become
The features such as this is low, work efficiency is high, more environmentally-friendly, anchor pole anti-pulling capacity is greatly improved.
The present invention also provides for a kind of construction utilizing long auger base expanding and base expanding device construction enlarging anchor rod.
For achieving the above object, the present invention can take following technical proposals:
A kind of long auger Counterboring apparatus, including being provided with the auger stem of helical blade, leading drill bit, institute
The top stating auger stem is connected with the headstock of stake machine by swivel joint, and swivel joint is provided with stock inlet,
Both sides, headstock top are provided with motor, are provided with reaming cylinder bracket, reaming oil cylinder in the middle of headstock top,
Being provided with engaging lug in the middle of the top of described cylinder bracket, reaming oil cylinder is cut with scissors with reaming cylinder bracket by engaging lug
Connecing, the piston-rod lower end of reaming oil cylinder is connected by transfer adapter with reaming connecting rod top, and described reaming is even
Bar bottom is arranged in the axial central through hole of auger stem, is provided with between described leading drill bit and auger stem
Revolution Counterboring apparatus, the lower end of reaming connecting rod is connected with revolution Counterboring apparatus, and revolution Counterboring apparatus bottom is with front
Lead drill bit to connect.
Described revolution Counterboring apparatus include on reaming bit body manage, reaming bit body down tube, and respectively with
On reaming bit body manage, reaming bit body down tube connect the reaming wing, on described reaming bit body pipe upper end with
Auger stem connects, and reaming bit body down tube lower end is connected with leading drill bit, and the described reaming wing is provided with many groups,
Many group reaming wings are uniform around auger stem axis, and the described reaming wing includes upper flange, lower wing plate, described on
Outside the upper end of wing plate and pipe on reaming bit body hinged, the length of each group upper flange is different, respectively organizes upper flange
Pin joint not on sustained height, wherein the pin joint of the upper flange that length is longer be positioned at lower section；Lower wing plate
Lower end and reaming bit body down tube outside hinged, pin joint in same level, the lower end of upper flange with
The upper end thereof of lower wing plate, the external cylindrical surface of described reaming bit body down tube and the endoporus of pipe on reaming bit body
Coordinating and move axially along endoporus, the bottom of reaming bit body down tube is provided with grout outlet.
On described reaming bit body, pipe is provided with internal spline, and reaming bit body down tube is provided with external splines, reaming bit
On body, pipe is connected by internal spline, external splines matched in clearance with reaming bit body down tube.
A kind of long auger enlarging anchor rod construction, comprises the following steps:
First with the auger stem boring with leading drill bit and revolution Counterboring apparatus, reaming oil cylinder piston is made to be in
Stretching out state, the reaming wing plate of revolution Counterboring apparatus is in rounding state, and boring is to prescribed depth；
2. after having holed, rig continues to rotate in place, and starts oil pump simultaneously and gradually regains reaming oil cylinder piston, on
Draw reaming connecting rod to make reaming bit body down tube move up in pipe on reaming bit body, drive the upper of the reaming wing
Wing plate, lower wing plate gradually strut to assigned position, while auger stem rotates, by upper flange, bottom wing
Plate is gradually flared to counter bore diameter；
The most then go up rotation and carry brill, auger stem gradually on carried Counterboring apparatus the base expanding and base expanding of foot of hole stirred and right
The expansion of hole wall, the reaming wing plate of different groups expands the boring of different-diameter size, end form respectively in hole
Become the diameter cylinders graded with the longest reaming wing plate enlarged portion, it is achieved classification reaming, reduce reaming difficulty；
4., after rotation expansion pore-forming completes, start delivery pump in hole, pump cement mortar, treat in the cylinder that rotation is expanded
Be full of cement mortar time, start oil pump gradually stretch out reaming oil cylinder piston, under push away reaming connecting rod make upper flange,
Lower wing plate draws in, continues pumping cement mortar, and rotation limit, auger stem limit promotes, and keeps auger stem to rotate
Speed and lifting speed, ensure in lifting process that the grout outlet bottom reaming bit is embedded in cement sand pulp all the time
Hereinafter, until cement mortar pressure fills to regulation absolute altitude；
5. complete auger stem revolution to promote and in hole after cement injection mortar, propose auger stem, insert in boring
Enter anchor rod body and fix between two parties, completing enlarging anchor rod construction.
The Advantageous Effects of the present invention:
1. this device has simple in construction, reliable operation, can use package unit once to complete boring, Kong Zhongkuo
The advantage of perfusion mortar in hole, hole；Can directly be holed and in anchor hole hole by long auger base expanding and base expanding device
Carrying out reaming in hole on wall and i.e. form local wide, speed of application is fast, and construction cost is low, overcomes existing executing
Carrying out needing during reaming section reaming secondary UR drilling tool in work technology, speed of application is slow, and construction cost is high,
And pore-forming, reaming procedure use a large amount of useless slurry of mud circulation generation pollute the problem of environment, institute of the present invention
The enlarging anchor rod construction work progress noiselessness that theres is provided, friction, without mud, anchoring body intensity height,
The features such as quality is good, low cost, work efficiency are high, more environmentally-friendly, anchor pole anti-pulling capacity is greatly improved.
2. due to the fact that reaming oil cylinder is arranged on the top of swivel joint, construction does not enter in boring, liquid
Compressing cylinder is departing from severe working condition, and service life is long, is not easy accident occur in construction.
3. on the reaming bit body of the present invention, pipe is joined by internal spline, external splines gap with reaming bit body down tube
Closing and connect, the axiality of the two, bonding strength are high, it is possible to bear big moment of torsion, and keep the axle of the two
Little to relative movement frictional resistance, mobile flexible.
4. the pin joint of the different group reaming wing plate upper limbs of the present invention is not on the height of same level, reaming
One group that the upper flange of the wing is longer is positioned at lower section；Due to after the upper flange bend open on top than the bottom wing of bottom
Plate upper limb open completely after the little one-level of diameter, and pin joint height height is a bit, rotates expand at the upper drilling tool that carries
Leading reaming during hole, then the reaming wing of bottom expands one-level aperture on the basis of previous stage counter bore diameter again,
Thus realize classification reaming, effectively reduce reaming difficulty.
Accompanying drawing explanation
Fig. 1 is the structural representation of long auger base expanding and base expanding device of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1；
Fig. 3 is the B-B sectional view of Fig. 1；
Fig. 4 is the profile of reaming cylinder bracket of the present invention；
Fig. 5 is classification counter bore diameter schematic diagram of the present invention；
Fig. 6 is the long auger base expanding and base expanding device of the present invention schematic diagram when not strutting；
Fig. 7 is the long auger base expanding and base expanding device of the present invention schematic diagram when strutting completely；
Fig. 8 is the use state diagram that the present invention is arranged on a machine；
Fig. 9 is the construction process figure of the long auger enlarging anchor rod construction embodiment one of the present invention；
Figure 10 is the construction process figure of the long auger enlarging anchor rod construction embodiment two of the present invention.
In figure: 1, reaming cylinder bracket；2, reaming oil cylinder；3, cylinder piston rod；4, transfer adapter；
5, reaming connecting rod；6, stock inlet；7, swivel joint；8, motor；9, headstock；10, auger
Bar；11, helical blade；12, manage on reaming bit body；13, one-level reaming wing plate upper limb；14, one-level
Reaming wing plate bottom wing；15, reaming bit body down tube；16, leading drill bit；17, grout outlet；18, secondary
Reaming wing plate upper limb；19, secondary reaming wing plate bottom wing；20, engaging lug；21, reaming cylinder bracket base；
22, bearing；23, mortar mixer；24, delivery pump；25, grouting pipeline；26, anchor rod body；27、
Cement mortar.
Detailed description of the invention
Embodiment one: below in conjunction with Fig. 1 to Fig. 7, Fig. 9, illustrates present embodiment, a kind of long spire
Bore expanded hole device, including being provided with the auger stem 10 of helical blade 11, leading drill bit 16, described spiral
The top of drilling rod 10 is connected with the headstock 9 of stake machine by swivel joint 7, and swivel joint 7 is provided with into slurry
Mouthfuls 6, both sides, headstock 9 top are provided with motor 8, be provided with in the middle of headstock 9 top reaming cylinder bracket 1,
Reaming oil cylinder 2, is provided with engaging lug 20 in the middle of the top of described cylinder bracket 1, reaming oil cylinder 2 is by connecting
Ear 20 is hinged with reaming cylinder bracket 1, and piston rod 3 lower end of reaming oil cylinder is passed through with reaming connecting rod 5 top
Transfer adapter 4 connects, and described reaming connecting rod 5 bottom is arranged in the axial central through hole of auger stem 10,
Be provided with revolution Counterboring apparatus between described leading drill bit 16 and auger stem 10, the lower end of reaming connecting rod 5 with
Revolution Counterboring apparatus connects, and revolution Counterboring apparatus bottom is connected with leading drill bit 16.
Described revolution Counterboring apparatus include pipe 12 on reaming bit body, reaming bit body down tube 15, respectively with
At least two group reaming wings that on reaming bit body, pipe 12, reaming bit body down tube 15 connect, the reaming wing is around spiral
Drilling rod 10 axis is uniform, and on described reaming bit body, pipe 12 upper end is connected with auger stem 10, reaming bit
Body down tube 15 lower end is connected with leading drill bit 16, and the described reaming wing is provided with many groups, and the present embodiment is 2 groups, and 2
The group reaming wing is uniform around auger stem axis, and the described reaming wing includes one-level reaming wing plate upper limb 13, secondary
Reaming wing plate upper limb 18, lower wing plate 14,19, on described one-level reaming wing plate upper limb 13, secondary reaming wing plate
Outside the upper end of the wing 18 and pipe 12 on reaming bit body hinged, the length of each group upper flange is different, on each group
The pin joint of wing plate is not on sustained height, and wherein the pin joint of the upper flange that length is longer is positioned at lower section；One
Level reaming wing plate bottom wing 14, the lower end of secondary reaming wing plate bottom wing 19 are cut with scissors outside reaming bit body down tube 15
Connect, pin joint in same level, one-level reaming wing plate upper limb 13, secondary reaming wing plate upper limb 18 times
End and one-level reaming wing plate bottom wing 14, the upper end thereof of secondary reaming wing plate bottom wing 19.Described reaming bit body
The external cylindrical surface of down tube 15 and the inner hole of pipe 12 on reaming bit body also move axially along endoporus, institute
Stating pipe 12 on reaming bit body and be provided with internal spline, reaming bit body down tube 15 is provided with external splines, reaming bit
On body, pipe 12 is connected by internal spline, external splines matched in clearance with reaming bit body down tube 15, reaming bit
The bottom of body down tube 15 is provided with grout outlet 17.
The reaming wing is driven by the oil pump drive installation reaming oil cylinder 2 on stake machine swivel joint 7 top and struts or receive
Hold together.During work, first reaming cylinder piston rod 3 is in the state of stretching out, and promotes reaming connecting rod 5 and one-level to expand
Hole wing plate upper limb 13, secondary reaming wing plate upper limb 18, under one-level reaming wing plate bottom wing 14, secondary reaming wing plate
The wing 19 is in rounding state, with the boring of long spire drilling tool to prescribed depth, forms the diameter shown in Fig. 3 big
The little boring for d2, foot of hole is the boring that diameter is d1 that leading drill bit is formed.
After diameter d2 has holed, stake machine continues original place and turns clockwise, and starts oil pump simultaneously and gradually regains
Reaming cylinder piston rod 3, pull-up reaming connecting rod 5 makes reaming bit body down tube 15 pipe 12 on reaming bit body
Inside moving up, drive reaming wing plate gradually to strut to assigned position, then revolution limit in limit puies forward brill, different groups
Reaming wing plate in hole, expand the boring that the diameter shown in Fig. 3 is d3, d4 respectively, ultimately form with
The longest reaming wing plate expansion equal diameter cylinder.The one-level reaming upper flange ratio little due to upper length is long
The little one-level of diameter after opening completely on the upper flange of the secondary reaming spending big bottom, but setting height(from bottom) is slightly
Height a bit, proposes leading reaming when drilling tool rotates reaming upper, and then the secondary reaming wing is at previous stage counter bore diameter
On the basis of expand aperture again, thus realize classification reaming, effectively reduce reaming difficulty.
After rotation expansion pore-forming completes, start delivery pump in hole, pump cement mortar, treat the cylinder that rotation is expanded
When body is full of cement mortar, starts oil pump and gradually stretch out reaming cylinder piston rod 3, under push away reaming connecting rod 5 and make
Reaming wing plate draws in, continues pumping cement mortar, and long spire drilling tool keeps rotary speed counterclockwise and promotes speed
Degree, needs in lifting process to ensure that the grout outlet 17 bottom reaming bit is embedded in below cement sand pulp, directly all the time
Fill to regulation absolute altitude to cement mortar pressure.
Promote and in hole after cement injection mortar 27 completing the revolution of long spire drilling tool, propose long spire drilling tool,
In boring, insert anchor rod body 26 and fix between two parties, completing enlarging anchor rod construction.
A kind of long auger enlarging anchor rod construction, comprises the following steps:
First hole with the auger stem 10 with leading drill bit 16 and revolution Counterboring apparatus, make reaming oil cylinder live
Plug is in the state of stretching out, and reaming wing plate is in rounding state, holes to prescribed depth, is formed shown in Fig. 3
The boring that diameter is d2, foot of hole be leading drill bit formed the boring that diameter is d1.
2. after diameter d2 has holed, rig continues original place and turns clockwise, and starts oil pump simultaneously and gradually regains
Reaming oil cylinder piston, pull-up reaming connecting rod makes reaming bit body down tube move up in pipe on reaming bit body,
Drive one-level reaming wing plate upper limb 13, secondary reaming wing plate upper limb 18, one-level reaming wing plate bottom wing 14, secondary
Reaming wing plate bottom wing 19 gradually struts to assigned position, while auger stem 10 rotates, one-level is expanded
Hole wing plate upper limb 13, secondary reaming wing plate upper limb 18, under one-level reaming wing plate bottom wing 14, secondary reaming wing plate
The wing 19 is gradually flared to counter bore diameter；
The most then go up rotation and carry brill, auger stem 10 gradually on carried Counterboring apparatus the base expanding and base expanding of foot of hole stirred
With the expansion to hole wall, the reaming wing plates of different groups expand in hole respectively the diameter shown in Fig. 3 be d3,
The boring of d4, ultimately forms and the longest reaming wing plate expansion equal diameter cylinder, it is achieved classification reaming,
Effectively reduce reaming difficulty；
4., after rotation expansion pore-forming completes, start delivery pump in hole, pump cement mortar, treat in the cylinder that rotation is expanded
When being full of cement mortar, start oil pump and gradually stretch out reaming oil cylinder piston, under push away reaming connecting rod and make one-level reaming
Wing plate upper limb 13, secondary reaming wing plate upper limb 18, one-level reaming wing plate bottom wing 14, secondary reaming wing plate bottom wing
19 draw in, continue pumping cement mortar, and rotation limit, auger stem 10 limit promotes, keeps rotary speed counterclockwise
With lifting speed, lifting process ensureing, the grout outlet bottom reaming bit is embedded in below cement sand pulp all the time,
Until cement mortar pressure fills to regulation absolute altitude；
5. complete the revolution of long spire drilling tool to promote and in hole after cement injection mortar, propose auger stem 10, to boring
Middle insertion anchor rod body is also fixed between two parties, completes enlarging anchor rod construction.
Embodiment two: below in conjunction with Fig. 8, Figure 10, illustrates present embodiment, and first reaming oil cylinder is lived
Stopper rod 3 is in the state of stretching out, and promotes reaming connecting rod 5 and reaming bit body down tube 15, makes one-level reaming wing plate
Upper limb 13, secondary reaming wing plate upper limb 18, one-level reaming wing plate bottom wing 14, secondary reaming wing plate bottom wing 19
Being in rounding state, hole to prescribed depth with long spire drilling tool, forming the diameter shown in Fig. 3 is
The boring of d2, foot of hole is the boring that diameter is d1 that leading drill bit is formed.
After diameter d2 has holed, stake machine continues original place and turns clockwise, and starts oil pump simultaneously and gradually regains
Reaming cylinder piston rod 3, pull-up reaming connecting rod 5 makes reaming bit body down tube 15 pipe 12 on reaming bit body
Inside moving up, drive reaming wing plate gradually to strut to assigned position, then revolution limit in limit puies forward brill, different groups
Reaming wing plate in hole, expand the boring that the diameter shown in Fig. 3 is d3, d4 respectively, ultimately form with
The longest reaming wing plate expansion equal diameter cylinder, it is achieved classification reaming, effectively reduces reaming difficulty.
After spiral drill is mentioned design expansion body segment mark high position, repeat to turn clockwise sinking reaming to hole
The end, starting delivery pump and pump cement mortar in hole, long spire drilling tool keeps dextrorotation rotary speed and lifting
Speed, needs in lifting process to ensure that the grout outlet 17 bottom reaming bit is embedded in below cement sand pulp all the time,
In time carrying to reaming section end face on reaming wing plate is fast, start oil pump and gradually stretch out reaming cylinder piston rod 3, under push away
Reaming connecting rod 5 makes reaming wing plate draw in, continues pumping cement mortar, and long spire drilling tool continues to lift up, and promotes
During need to ensure that the grout outlet 17 bottom reaming bit is embedded in below cement sand pulp all the time, until cement bonded sand
Slurry pressure fills to regulation absolute altitude.
Promote and in hole after cement injection mortar 27 completing the revolution of long spire drilling tool, propose long spire drilling tool,
In boring, insert anchor rod body 26 and fix between two parties, completing enlarging anchor rod construction.
Although the detailed description of the invention of invention is described by the above-mentioned accompanying drawing that combines, but not protects the present invention
Protecting the restriction of scope, on the basis of technical scheme, those skilled in the art need not pay wound
The property the made various amendments that can make of work or deformation are still within protection scope of the present invention.
Claims (3)
- null1. a long auger base expanding and base expanding device，Including the auger stem being provided with helical blade、Leading drill bit，The top of described auger stem is connected with the headstock of stake machine by swivel joint，Swivel joint is provided with stock inlet，Both sides, headstock top are provided with motor，Reaming cylinder bracket it is provided with in the middle of headstock top、Reaming oil cylinder，It is provided with engaging lug in the middle of the top of described cylinder bracket，Reaming oil cylinder is hinged with reaming cylinder bracket by engaging lug，The piston-rod lower end of reaming oil cylinder is connected by transfer adapter with reaming connecting rod top，Described reaming connecting rod bottom is arranged in the axial central through hole of auger stem，It is provided with revolution Counterboring apparatus between described leading drill bit and auger stem，The lower end of reaming connecting rod is connected with revolution Counterboring apparatus，Revolution Counterboring apparatus bottom is connected with leading drill bit，It is characterized in that，Described revolution Counterboring apparatus includes managing on reaming bit body、Reaming bit body down tube，And manage with on reaming bit body respectively、The reaming wing that reaming bit body down tube connects，On described reaming bit body, pipe upper end is connected with auger stem，Reaming bit body down tube lower end is connected with leading drill bit，The described reaming wing is provided with many groups，Many group reaming wings are uniform around auger stem axis，The described reaming wing includes upper flange、Lower wing plate，Outside the upper end of described upper flange and pipe on reaming bit body hinged，The length of each group upper flange is different，The pin joint of each group upper flange is not on sustained height，Wherein the pin joint of the upper flange that length is longer is positioned at lower section；Outside the lower end of lower wing plate and reaming bit body down tube hinged, pin joint is in same level, the lower end of upper flange and the upper end thereof of lower wing plate, the external cylindrical surface of described reaming bit body down tube and the inner hole of pipe on reaming bit body also move axially along endoporus, and the bottom of reaming bit body down tube is provided with grout outlet.
- 2. long auger base expanding and base expanding device as claimed in claim 1, it is characterized in that, on described reaming bit body, pipe is provided with internal spline, and reaming bit body down tube is provided with external splines, and on reaming bit body, pipe is connected by internal spline, external splines matched in clearance with reaming bit body down tube.
- 3. a long auger enlarging anchor rod construction, comprises the following steps:1) first with the auger stem boring with leading drill bit and revolution Counterboring apparatus, making reaming oil cylinder piston be in the state of stretching out, the reaming wing plate of revolution Counterboring apparatus is in rounding state, and boring is to prescribed depth；2) after having holed, rig continues to rotate in place, start oil pump simultaneously and gradually regain reaming oil cylinder piston, pull-up reaming connecting rod makes reaming bit body down tube move up in pipe on reaming bit body, the upper flange of the reaming wing, lower wing plate is driven gradually to strut to assigned position, while auger stem rotates, upper flange, lower wing plate are gradually flared to counter bore diameter；3) then go up rotation and carry brill, auger stem gradually on carried Counterboring apparatus and the base expanding and base expanding of foot of hole stirred and expansion to hole wall, the reaming wing plate of different groups expands the boring of different-diameter size respectively in hole, ultimately form and the longest reaming wing plate expansion equal diameter cylinder, realize classification reaming, effectively reduce reaming difficulty；4) after rotation expansion pore-forming completes, start delivery pump in hole, pump cement mortar, when being full of cement mortar in the cylinder that rotation is expanded, start oil pump and gradually stretch out reaming oil cylinder piston, under push away reaming connecting rod and make upper flange, lower wing plate draw in, continue pumping cement mortar, rotation limit, auger stem limit promotes, keep auger stem rotary speed and promote speed, lifting process ensureing, the grout outlet bottom reaming bit is embedded in below cement sand pulp all the time, until cement mortar pressure fills to regulation absolute altitude；5) complete auger stem revolution to promote and in hole after cement injection mortar, propose auger stem, in boring, insert anchor rod body and fix between two parties, complete enlarging anchor rod construction.
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| CN201410691456.7A CN104453717B (en) | 2014-11-26 | 2014-11-26 | Long auger drilling and bottom expanding device and expanded anchor rod construction method |
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| CN104847266B (en) * | 2015-04-29 | 2017-09-05 | 王春龙 | A kind of anchor pole multi-section reaming equipment and its application |
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| CN105019453B (en) * | 2015-07-31 | 2016-09-07 | 新乡市嘉汇科技有限公司 | A kind of band skeleton expands body anchor cable |
| CN105089506B (en) * | 2015-09-18 | 2017-09-05 | 洛阳中岩工程材料有限公司 | A kind of double-layer cross self-drilling anchor rod bit |
| CN106401502A (en) * | 2016-08-31 | 2017-02-15 | 中国冶集团有限公司 | Rotating hole-forming device with hydraulic expanding head and construction method |
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| CN113073641B (en) * | 2021-04-25 | 2022-08-26 | 浙江工业职业技术学院 | Multi-section expanding and punching equipment |
| CN114151012A (en) * | 2021-12-07 | 2022-03-08 | 中建东设岩土工程有限公司 | Jet grouting pile expanding and jet grouting assisting construction and pile diameter detection method |
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| JP4638744B2 (en) * | 2004-03-31 | 2011-02-23 | 株式会社テノックス | Enlarging head in hollow pile digging press |
| CN2866602Y (en) * | 2006-02-24 | 2007-02-07 | 祝慧佳 | Long-auger drill reaming bottom stirring and in-hole reaming concrete pile-grouting piling apparatus |
| CN200943204Y (en) * | 2006-08-02 | 2007-09-05 | 刘润郊 | Peg forming device for drilling pump filling large flowing concrete finger ring peg |
| CN101691754B (en) * | 2009-09-30 | 2011-05-11 | 广东三岛地工低碳技术研发有限公司 | Multi-plate body type anchor rod |
| CN103410142B (en) * | 2013-08-09 | 2015-09-30 | 武汉中力岩土工程有限公司 | A kind of construction method of punching bottom-enlarging filling pile and expansion end device |
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