CN108729445A - The method for abolishing the drill bit of waste and old solid pile and abolishing old solid pile and new pile being perfused - Google Patents
The method for abolishing the drill bit of waste and old solid pile and abolishing old solid pile and new pile being perfused Download PDFInfo
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- CN108729445A CN108729445A CN201810916598.7A CN201810916598A CN108729445A CN 108729445 A CN108729445 A CN 108729445A CN 201810916598 A CN201810916598 A CN 201810916598A CN 108729445 A CN108729445 A CN 108729445A
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- scraper plate
- pile
- baffle ring
- drill bit
- solid pile
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- 239000007787 solid Substances 0.000 title claims abstract description 70
- 239000002699 waste material Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 17
- 210000000515 tooth Anatomy 0.000 claims abstract description 29
- 230000003014 reinforcing effect Effects 0.000 claims description 34
- 238000005553 drilling Methods 0.000 claims description 17
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 10
- 238000002788 crimping Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 239000002689 soil Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000007704 transition Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
-
- 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A kind of method abolished waste and old solid pile the invention discloses drill bit for abolishing waste and old solid pile and using the drill bit of the present invention and new pile is perfused, the drill bit includes mandrel and baffle ring, multiple first scraper plates and the second scraper plate are equipped between mandrel and baffle ring, the inner end of above two scraper plate is connect with mandrel and outer end is connect with baffle ring；The bottom of every piece of scraper plate is equipped with outer low and inner high bottom bevel edge, and the bottom bevel edge of the first scraper plate is equipped with multiple cutter teeths, and the bottom bevel edge of the second scraper plate is equipped with multiple picks；The key of this method is：Old stake is abolished be combined into one with two steps of new pile pore-forming, it is synchronous carry out, solid pile is crushed using cutter teeth and pick.The drill bit and method can effectively be crushed solid pile and efficiency is fast, at low cost.
Description
Technical field
It is especially a kind of drill bit that abolishing waste and old solid pile and utilization the present invention relates to construction foundation working technical field
The method that the drill bit abolishes waste and old solid pile and new pile is perfused.
Background technology
In engineering construction, it is often necessary to by the short demolishing buildings broken always, then build higher more in old place
The problem of new building, this relates into place the dismounting of waste and old stake and new pile pouring construction.And what the application was directed to, it is
Waste and old solid pile is abolished, and certainly, solid pile here should make the understanding of broad sense, it include cast-in-situ bored pile, CFG, it is real
Heart prefabricated pile etc..
The process for abolishing construction of the waste and old stake of the prior art is：It will be useless on ground using the pile-drawing machine with pile pulling casing
Old pile pile is extracted, and is then carried out reaming to remaining stake holes after pile pulling and is deepened, forms it into the deeper stake holes of bigger, then carry out
Borehole cleaning, is put into steel reinforcement cage, and concrete perfusion is allowed to form new cast-in-situ bored pile.In this way, by the small pile pile of old, bearing capacity
It extracts, perfusion is good new, stake diameter bigger, deeper, the stronger cast-in-situ bored pile of bearing capacity.
But there are a huge limitation, the i.e. prior arts to be only capable of processing pile pile for the scheme of the waste and old stake transformation of the prior art,
Solid concrete-pile is when it come to arrived, then existing technical solution is helpless, this also constitutes skill in a puzzlement industry
The technical barrier of art personnel for many years.And it is even directed to pile pile, there is also more defects for the scheme of the prior art, such as pile-drawing machine
The limited length of pile pulling casing is usually no more than 20 meters, therefore can only extract the pile pile within 20 meters of depth；Moreover, to work order
For position, it is also a no small cost to be specially equipped with a set of pile pulling device, if purchasing, utilization rate is not low cost-effective, if renting,
Its rent is again very high, but also must be born by the expense of equipment transition, therefore deficiency in economic performance, and equipment transition is time-consuming and laborious, very
It is difficult be sent in time thus schedule delays；Moreover it is that substep carries out that the process that bigger deeper drills is pulled out and drilled through in above-mentioned old stake
, therefore construction efficiency is not high.
Invention content
The invention solves a technical problem be to provide and a kind of can effectively be crushed solid pile and efficiency is fast, at low cost
The drill bit for abolishing waste and old solid pile.
The present invention a technical solution be to provide a kind of drill bit for abolishing waste and old solid pile, it include mandrel and
Baffle ring, the interconnecting piece for being docked with auger stem is equipped at the top of mandrel, be equipped between mandrel and baffle ring multiple first scraper plates and
The inner end of second scraper plate, above two scraper plate is connect with mandrel and outer end is connect with baffle ring；The bottom of every piece of scraper plate is equipped with outer low
The bottom bevel edge of interior high bottom bevel edge, the first scraper plate is equipped with multiple cutter teeths, and the bottom bevel edge of the second scraper plate is equipped with multiple picks, baffle ring
Internal diameter be more than and be intended to the outer diameter of broken solid pile, protrusion baffle ring base ring face under a cutter teeth of the first scraper plate bottommost.
The present invention abolishes the drill bit of waste and old solid pile compared with prior art, has the following advantages and effect：
Before lower brill, the shield ring sleeve of drill bit is being intended at the top of broken solid pile, plays preliminary position-limiting action, when lower brill, cutter teeth
It can be fast and effeciently crushed solid pile concrete, and grind the reinforcing bar on solid pile cages, the levigate mill length of reinforcing bar is made it easily
It is disconnected in hinge, and pick can further be crushed solid pile concrete, and the reinforcing bar that breaks is cut with scissors, while pick can hook and enwind disconnected steel
Muscle takes it out drilling；Moreover, seeing on the whole, the low inside and high outside scraper plate of polylith together constitutes the cutting face of taper, under
During brill, solid pile is cut into pyramidal structure, in this way, being bored under playing stable guiding, ensuring vertically, preventing drilling rod from deviating
Effect；To sum up, the drill bit solves the technical barrier perplexed always in industry for many years, that is, realizes the broken removing of solid pile.
Moreover two steps of old stake removing and new pile pore-forming are combined into one by drill bit of the invention, synchronous progress, accelerate construction effect
Rate；And the depth of old stake removing is no longer influenced by the constraint of the pile pulling casing of pile-drawing machine, lower as needed can bore different depth, with
Remove the waste and old solid pile that depth is more than 20 meters；It is combined with drill bit moreover, equipment is removed in above-mentioned old stake, so there is no need to
Be further provided with dedicated pile pulling device, reduce cost of carry, lease expenses and the transition expense of pile pulling device, and with with
It takes, without waiting for special pile pulling device transition as the prior art, therefore avoids delay the duration；Moreover it is equipped with pick and tooth
The bit cuttings of the gear teeth is efficient, pile-forming effect is good, thicker deeper, moreover it is possible to enter rock, so that new pile bearing capacity is strong, meet modern
Change the demand of high building.Certainly, this drill bit can be according to the stake diameter size of waste and old solid pile, to use different size of drill bit specification
It constructs.
Preferably, the bottom bevel edge of the first scraper plate is less than the bottom bevel edge of the second scraper plate, in this way, the cutter teeth on the first scraper plate
Solid pile body can be contacted one step ahead, play the role of main breaking concrete and grinding reinforcing bar, reinforcing bar is ground and is deformed, reinforcing bar is made
Become elongated to be easy to be broken, and the pick on the second scraper plate can lag the solid pile body of certain time contact, and it is mixed to play addi-tional crusher
The effect of soil and the disconnected reinforcing bar of hinge is coagulated, therefore the time difference of cutter teeth and pick makes the broken pile process of the drill bit have more stereovision, and
Cutter teeth first grinds deformation, then is broken by pick hinge and hook winding, and two kinds are bored teeth and cooperated, reasonable design.
As further preferred, mandrel is rotatably sheathed with outer tube, and the first scraper plate inner end is fixed with outer tube, and first scrapes
Plate outer end is fixed with baffle ring；Housing tube wall be equipped with the one-to-one p-shaped through-hole of the second scraper plate, p-shaped through-hole is by top
The straight hole of reaming and lower part is constituted lateral out, and the height of reaming matches with the height of the second scraper plate inner end lateral out, and straight hole is wide
Degree matches with the width of the second scraper plate inner end；Baffle ring inner peripheral surface is equipped with and the one-to-one p-shaped limiting slot of the second scraper plate, P
The straight trough that shape limiting slot is extended out slot and lower part by the transverse direction on top is constituted, and laterally extends out the height of the height and the second scraper plate outer end of slot
Degree matches, and straight trough width matches with the width of the second scraper plate outer end；Every piece of second scraper plate passes through corresponding p-shaped through-hole, the
The inner end of two scraper plates is fixed with mandrel, and the outer end of the second scraper plate is caught in corresponding p-shaped limiting slot.
The operating principle of above structure is, when lower brill, the second scraper plate both ends are stuck in reaming lateral out and laterally extend out
In slot, the second scraper plate and pick are in position relatively high in baffle ring, in this way, in the height in space between pick and cutter teeth
The time difference of poor and lower brill so that cutter teeth first contacts significantly breaking concrete with pile body and is ground in advance to reinforcing bar,
It plays the cutter teeth broken rock intensity obviously advantage bigger than pick, then is followed up by pick and breaking concrete and cut with scissors disconnected be ground
Elongated reinforcing bar；After getting into certain depth under and, core pipe is reversely rotated so that the second scraper plate is inverted to above straight hole and straight trough,
In this way, after being detached from reaming lateral out and laterally extending out slot limitation, core pipe can drive the second scraper plate that can decline, and make the second scraper plate both ends
Straight hole and straight trough bottom are dropped to, i.e., so that the second scraper plate and pick are in position relatively low in baffle ring, convenient for above carrying drill bit
When pick winding as much as possible hook broken reinforcing bar, i.e., so that broken reinforcing bar is maximumlly carried out brill by pick
Hole；And after drill bit is by upper extraction ground, during the reinforcing bar wound on cutting away pick, the second scraper plate is located at again
The upper end of straight hole and straight trough, at this point, worker easily can reset baffle ring by manual rotation in hell so that the second scraper plate both ends
Again it is caught in reaming lateral out and laterally extends out in slot, convenient for repeating lower to bore, reversion, above carry.
As still more preferably, baffle ring is equipped with multiple cushion blocks, and cushion block lower part is equipped with crimping, and cushion block top is equipped with bolt
Hole, the crimping of cushion block are hooked with baffle ring, and cushion block top is spirally connected with baffle ring, in this way, removable outside baffle ring be mounted with multiple pads
Block avoids baffle ring from crossing quick-wearing for protecting baffle ring, moreover, above-mentioned cushion block dismounting is efficient and convenient, it is only necessary to catch on lower part
Upper part is spirally connected can be achieved with the Fast Installation of cushion block again by crimping, in this way, after old pad wear, convenient and efficient can more renew
Cushion block.
The invention solves another technical problem be to provide and a kind of can effectively be crushed that solid pile and efficiency is fast, cost
The low method abolished waste and old solid pile using drill bit of the invention and new pile is perfused.
The technical solution of the present invention, which is to provide, a kind of to be abolished waste and old solid pile using drill bit and new pile is perfused
Method, step includes：
It is first intended to the broken solid pile top perimeter soil body to remove to expose stake top, driving drill bit declines so that drill bit
Baffle ring entangles solid pile stake top tentatively to limit；Under original state, the second scraper plate inner end is located in the reaming lateral out of p-shaped through-hole
And the transverse direction that outer end is located at p-shaped limiting slot extends out in slot, at this point, the second scraper plate and pick are located at a baffle ring high position；
Driving drilling rod is drilled down into, and since the pick of the second scraper plate is located at a baffle ring high position, therefore the cutter teeth of the first scraper plate is first
The concrete of pile body, the reinforcing bar on the solid pile cages of simultaneous grinding are contacted and be crushed with solid pile, and are located at a baffle ring high position
Second scraper plate and pick, which then follow up, is crushed solid pile concrete, while the reinforcing bar of the disconnected steel reinforcement cage of pick hinge, and will be taken off from steel reinforcement cage
From reinforcing bar wind hook；During drill bit is crept into, boring mud is upward through the gap between scraper plate, by the helical blade band of drilling rod
Go out ground；
After lower brill certain depth, drilling rod and mandrel are reversely rotated so that the second scraper plate inner end is extended out from the transverse direction of p-shaped through-hole
Hole rotates to above straight hole presses to straight hole bottom end again, while the second scraper plate inner end being made to extend out slot from the transverse direction of p-shaped limiting slot
Rotate to above straight trough and press to the bottom end of straight trough again so that the second scraper plate and pick drop to baffle ring low level, then after
It is continuous to reversely rotate several circles, to ensure that pick hooks the reinforcing bar being more broken；
Hell will be proposed on drill bit again, during above carrying, the second scraper plate both ends can rise to the upper end of straight hole and straight trough,
Then the reinforcing bar being wrapped on drill bit pick is cut away with autogenous cutting, and rotates baffle ring so that the both ends of the second scraper plate are caught in again
Reaming is extended out with lateral in slot lateral out；
Get into certain depth under continuing, then reversely rotate, make pick that low level be kept to hook reinforcing bar, then on pull out cleaning, and answer
Position baffle ring, and so on, until waste and old solid pile is fully erased, then proceed to down the projected depth for getting into new pile；At this point, old
Stake is removed and new pile pore-forming is completed；
Borehole cleaning sinks to steel reinforcement cage and pours new pile concrete.
After above step, the method for the present invention has the following advantages：Casing can entangle solid stake top, preliminary to be oriented to,
When drilling, each tapered cutting face of spoke type scraper plate group, broken solid pile continues to provide stable guiding simultaneously, ensures vertical
Lower brill；Successively contact and breaking concrete, stereovision are strong, efficient, broken thorough for cutter teeth and pick when lower brill；Energy when above carrying
Pick is reduced, it is made fully to hook reinforcing bar, bottom hole reinforcing bar remnants is reduced to greatest extent, improves follow-up pile quality；It is synchronous to carry out
Waste and old solid pile is crushed and new pile pore-forming, further speeds up construction efficiency；Waste and old solid pile grinding depth is unrestricted, grinding depth
More than 20 meters；Without special pile pulling device, cost is saved；New stake holes is thicker deeper, and bearing capacity is stronger.
Description of the drawings
Positive schematic cross-sectional view when Fig. 1 is the pick low level for the drill bit that the present invention abolishes waste and old solid pile.
Positive schematic cross-sectional view when Fig. 2 is a pick high position for the drill bit that the present invention abolishes waste and old solid pile.
Fig. 3 is the structural schematic diagram for the drill bit that the present invention abolishes waste and old solid pile.
Fig. 4 is the structural schematic diagram of the mandrel for the drill bit that the present invention abolishes waste and old solid pile, interconnecting piece and the second scraper plate.
Fig. 5 is the configuration schematic diagram for the drill bit that the present invention abolishes waste and old solid pile.
As shown in the figure 1, mandrel, 2, baffle ring, 3, interconnecting piece, the 4, first scraper plate, the 5, second scraper plate, 6, bolt hole, 7, bottom it is oblique
Side, 8, cutter teeth, 9, pick, 10, outer tube, 11, p-shaped through-hole, 11.1, reaming lateral out, 11.2, straight hole, 12, p-shaped limit
Slot, 12.1, laterally extend out slot, 12.2, straight trough, 13, cushion block, 14, crimping.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments.
As shown in figure 1, figure 2, figure 3, figure 4 and figure 5, the present invention abolishes the drill bit of waste and old solid pile, it includes mandrel 1 and gear
Circle 2,1 top of mandrel are equipped with the interconnecting piece 3 for being docked with auger stem.
4 and second scraper plate 5 of multiple first scraper plates, 4 He of the first scraper plate in the present embodiment are equipped between mandrel 1 and baffle ring 2
Second scraper plate 5 is three pieces.The first above-mentioned scraper plate 4 and the second scraper plate 5 are spaced laying and the equal spoke type of each scraper plate is circumferentially equal
Even distribution.
The bottom of every piece of scraper plate is equipped with outer low and inner high bottom bevel edge 7, the bottom bevel edge 7 of the first scraper plate 4 is rotatably mounted have it is more
The bottom bevel edge 7 of a cutter teeth 8, the second scraper plate 5 is fixed with multiple picks 9.The internal diameter of baffle ring 2, which is more than, is intended to the outer of broken solid pile
Diameter, 8 times 2 base ring faces of protrusion baffle ring of a cutter teeth of 4 bottommost of the first scraper plate.
The inner end of above two scraper plate is connect with mandrel 1 and outer end is connect with baffle ring 2.Above-mentioned connection type can be solid
Fixed, i.e., the inner end of two kinds scraper plates is fixed with mandrel 1 and outer end is fixed with baffle ring 2.At this point, the bottom bevel edge 7 of the first scraper plate 4 is low
In the bottom bevel edge 7 of the second scraper plate 5, be first crushed pile body convenient for cutter teeth 8 and pick 9 subsequently follow-up is broken.
The connection of scraper plate and mandrel 1 and baffle ring 2 can also use structure in detail below.
Mandrel 1 is rotatably sheathed with outer tube 10, and 4 inner end of the first scraper plate is fixed with outer tube 10,4 outer end of the first scraper plate with
Baffle ring 2 is fixed；10 tube wall of outer tube is equipped with and three 5 one-to-one three p-shaped through-holes 11 of the second scraper plate, p-shaped through-hole 11
It is made of the straight hole 11.2 of the reaming lateral out 11.1 on top and lower part, lateral out in the height of reaming 11.1 and the second scraper plate 5
The height at end matches, i.e., the height of reaming 11.1 is greater than or equal to the height of 5 inner end of the second scraper plate lateral out, and straight hole 11.2 is wide
Degree matches with the width of 5 inner end of the second scraper plate；I.e. 11.2 width of straight hole is greater than or equal to the width of 5 inner end of the second scraper plate.
2 inner peripheral surface of baffle ring be equipped with 5 one-to-one p-shaped limiting slot 12 of the second scraper plate, p-shaped limiting slot 12 is by top
The straight trough 12.2 for laterally extending out slot 12.1 and lower part is constituted, and the height for laterally extending out slot 12.1 is greater than or equal to outside the second scraper plate 5
The height at end, 12.2 width of straight trough are greater than or equal to the width of 5 outer end of the second scraper plate.
Every piece of second scraper plate 5 passes through corresponding p-shaped through-hole 11, inner end and the mandrel 1 of the second scraper plate 5 to fix, the second scraper plate 5
Outer end be caught in corresponding p-shaped limiting slot 12.
Removable on baffle ring 2 to be connected with multiple cushion blocks 13, specifically, 13 lower part of cushion block is equipped with crimping 14, on cushion block 13
Portion is equipped with bolt hole 6, and crimping 14 and the baffle ring 2 of cushion block 13 hook, and 13 top of cushion block is spirally connected with baffle ring 2.
To make up the hypodynamic problem of 2 central cutting of baffle ring, one group of three tooth bringing together is secured in 1 bottom end of mandrel
The gear teeth 8.Above three cutter teeth 8 also with mandrel 1 reversion or above carry and lift, i.e., normal lower when boring, above three gear wheel
Tooth 8 is also located at a high position as pick 9, avoids the too low vertical lower brill for influencing drill bit in position.
Using the drill bit of the present invention come the method abolished waste and old solid pile and new pile is perfused, its step are as follows.
According to the size for the waste and old solid pile outer diameter that prospecting obtains, the drill bit of appropriate size is selected.
It is intended to the broken solid pile top perimeter soil body to remove to expose stake top, driving drill bit declines so that the gear of drill bit
Circle 2 entangles solid stake top tentatively to limit；More specifically, being that three cutter teeths 8 of three 4 lowermost ends of the first scraper plate resist
Tentatively to limit at the top of solid pile.
Under original state, 5 inner end of the second scraper plate is interior positioned at the reaming lateral out 11.1 of p-shaped through-hole 11 and outer end is located at p-shaped
The transverse direction of limiting slot 12 extends out in slot 12.1, at this point, the second scraper plate 5 and pick 9 are located at relatively high position in baffle ring 2.
Driving drilling rod is drilled down into, since the pick 9 of the second scraper plate 5 is located at the high position of baffle ring 2, therefore the gear wheel of the first scraper plate 4
Tooth 8 first contacts with solid pile and is crushed the concrete of pile body, the reinforcing bar on the solid pile cages of simultaneous grinding, and is located at baffle ring 2
High-order the second scraper plate 5 and pick 9, which then follows up, continues to be crushed solid pile concrete, while the reinforcing bar of the disconnected steel reinforcement cage of the hinge of pick 9, and
The reinforcing bar being detached from from steel reinforcement cage is wound and is hooked；That is, cutter teeth 8 first contacts simultaneously shatter most concrete and grinding steel
Muscle, and 9 later stage of pick follows up, further breaking concrete and cut with scissors it is disconnected be ground deformed reinforcing bar, in this way so that boring mud powder
It is broken more thorough, it is easy to be discharged.In drilling process, boring mud is upward through the gap between each adjacent scraper plate, then by the spiral shell of drilling rod
Vane piece takes ground out of to be discharged.Certainly, synchronous to carry out mud off in drilling rod going down process.And when mud off, it can profit
Add water with the mud in stratum and do not have to specially be further provided with mud, therefore can further reduce the cost.
Lower brill certain depth as it is lower bore 2 meters after, reversely rotate drilling rod and mandrel 1 so that 5 inner end of the second scraper plate is from P
The reaming lateral out 11.1 of shape through-hole 11 rotates to 11.2 top of straight hole and presses to 11.2 bottom end of straight hole again, while so that second scrapes
5 inner end of plate from the transverse direction of p-shaped limiting slot 12 extends out slot 12.1 and rotates to above straight trough 12.2 presses to the bottom end of straight trough 12.2 again,
So that the second scraper plate 5 and pick 9 drop to position relatively low in baffle ring 2, then proceed to reversely rotate several circles, to ensure
Pick 9 hooks the reinforcing bar of fracture as much as possible.
Hell will be proposed on drill bit again, during above carrying, 5 both ends of the second scraper plate can rise to straight hole 11.2 and straight trough
12.2 upper end.Drill bit fishes for concrete block and reinforcing bar remaining in hole after being proposed in drilling, then with pawl bucket is rushed, meanwhile, work
People cuts away the reinforcing bar being wrapped on bit prong 8 and pick 9, and spinning reduction baffle ring 2 in drilling external application autogenous cutting so that the
The both ends of two scraper plates 5 are caught in reaming lateral out 11.1 and laterally extend out in slot 12.1 again.Certainly, the spinning reduction baffle ring
2 can be manual operation, can also be to set convex block in 2 excircle of baffle ring, and ground level is fixed with one section of spiral limit inclined-plane,
Inclined-plane is met in 2 uphill process of baffle ring to hinder, it can only be along inclined-plane spiral, that is to say, that during being pulled out on drilling rod,
Synchronously complete the spinning reduction of baffle ring 2.
Get into certain depth under continuing, then reversely rotate, make pick 9 that low level be kept to hook reinforcing bar, then on pull out cleaning, and answer
Position baffle ring 2, and so on, until waste and old solid pile is fully erased, then proceed to down the projected depth for getting into new pile；At this point,
Old stake removing and new pile pore-forming are completed.
Borehole cleaning sinks to steel reinforcement cage and pours new pile concrete.
Claims (5)
1. a kind of drill bit for abolishing waste and old solid pile, it includes mandrel (1) and baffle ring (2), is equipped with and is used for and spiral shell at the top of mandrel (1)
The interconnecting piece (3) of rotary drill bar docking, it is characterised in that：Multiple first scraper plates (4) and the are equipped between mandrel (1) and baffle ring (2)
The inner end of two scraper plates (5), above two scraper plate is connect with mandrel (1) and outer end is connect with baffle ring (2)；The bottom of every piece of scraper plate is set
There are outer low and inner high bottom bevel edge (7), the bottom bevel edge (7) of the first scraper plate (4) to be equipped with multiple cutter teeths (8), the bottom of the second scraper plate (5)
Bevel edge (7) is equipped with multiple picks (9), and the internal diameter of baffle ring (2) is more than the outer diameter for being intended to broken solid pile, the first scraper plate (4) most bottom
Baffle ring (2) base ring face is protruded under one cutter teeth (8) in portion.
2. the drill bit according to claim 1 for abolishing waste and old solid pile, it is characterised in that：The bottom bevel edge of first scraper plate (4)
(7) it is less than the bottom bevel edge (7) of the second scraper plate (5).
3. the drill bit according to claim 1 for abolishing waste and old solid pile, it is characterised in that：Mandrel (1) is rotatably sheathed with
Outer tube (10), the first scraper plate (4) inner end is fixed with outer tube (10), and the first scraper plate (4) outer end is fixed with baffle ring (2)；Housing
Manage (10) tube wall be equipped with the one-to-one p-shaped through-hole (11) of the second scraper plate (5), p-shaped through-hole (11) by top lateral out
The straight hole (11.2) of reaming (11.1) and lower part is constituted, lateral out the height of the height of reaming (11.1) and the second scraper plate (5) inner end
Degree matches, and straight hole (11.2) width matches with the width of the second scraper plate (5) inner end；
Baffle ring (2) inner peripheral surface be equipped with the one-to-one p-shaped limiting slot (12) of the second scraper plate (5), p-shaped limiting slot (12) is by upper
The transverse direction in portion extends out slot (12.1) and the straight trough (12.2) of lower part is constituted, and laterally extends out the height and the second scraper plate of slot (12.1)
(5) height of outer end matches, and straight trough (12.2) width matches with the width of the second scraper plate (5) outer end；
Every piece of second scraper plate (5) passes through corresponding p-shaped through-hole (11), and the inner end of the second scraper plate (5) and mandrel (1) are fixed, and second
The outer end of scraper plate (5) is caught in corresponding p-shaped limiting slot (12).
4. the drill bit according to claim 3 for abolishing waste and old solid pile, it is characterised in that：Baffle ring (2) is equipped with multiple pads
Block (13), cushion block (13) lower part are equipped with crimping (14), and cushion block (13) top is equipped with bolt hole (6), the crimping (14) of cushion block (13)
It is hooked with baffle ring (2), cushion block (13) top is spirally connected with baffle ring (2).
5. the method abolished waste and old solid pile using the drill bit described in any one of Claims 1 to 44 and new pile is perfused,
It is characterized in that：Its step includes：
It is first intended to the broken solid pile top perimeter soil body to remove to expose stake top, driving drill bit declines so that the baffle ring of drill bit
(2) solid stake top is entangled tentatively to limit；Under original state, the second scraper plate (5) inner end is located at p-shaped through-hole (11) lateral out
The transverse direction that in reaming (11.1) and outer end is located at p-shaped limiting slot (12) extends out in slot (12.1), at this point, the second scraper plate (5) and section
Tooth (9) is located at baffle ring (2) high position；
Driving drilling rod is drilled down into, and since the pick (9) of the second scraper plate (5) is located at, baffle ring (2) is high-order, therefore the first scraper plate (4)
Cutter teeth (8) first contacts with solid pile and is crushed the concrete of pile body, the reinforcing bar on the solid pile cages of simultaneous grinding, and is located at
The second scraper plate (5) and pick (9) of baffle ring (2) high position, which then follow up, is crushed solid pile concrete, while the disconnected steel reinforcement cage of pick (9) hinge
Reinforcing bar, and by the reinforcing bar being detached from from steel reinforcement cage wind hook；Drill bit creep into during, boring mud through the gap between scraper plate to
On, ground is taken out of by the helical blade of drilling rod；
After lower brill certain depth, drilling rod and mandrel (1) are reversely rotated so that cross of the second scraper plate (5) inner end from p-shaped through-hole (11)
Outside reaming (11.1) rotates to above straight hole (11.2) presses to straight hole (11.2) bottom end again, while making the second scraper plate (5)
Inner end from the transverse direction of p-shaped limiting slot (12) extends out slot (12.1) and rotates to above straight trough (12.2) presses to straight trough (12.2) again
Bottom end then proceedes to reversely rotate several circles, with true so that the second scraper plate (5) and pick (9) drop to baffle ring (2) low level
It protects pick (9) and hooks the reinforcing bar being more broken；
Hell will be proposed on drill bit again, during above carrying, the second scraper plate (5) both ends can rise to straight hole (11.2) and straight trough
(12.2) then the reinforcing bar being wrapped on drill bit pick (9) is cut away in upper end with autogenous cutting, and rotate baffle ring (2) so that second
The both ends of scraper plate (5) are caught in reaming lateral out (11.1) and laterally extend out in slot (12.1) again；
Get into certain depth under continuing, then reversely rotate, make pick (9) that low level be kept to hook reinforcing bar, then on pull out cleaning, and reset
Baffle ring (2), and so on, until waste and old solid pile is fully erased, then proceed to down the projected depth for getting into new pile；At this point,
Old stake removing and new pile pore-forming are completed；
Borehole cleaning sinks to steel reinforcement cage and pours new pile concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810916598.7A CN108729445B (en) | 2018-08-13 | 2018-08-13 | Drill bit for breaking waste solid piles and method for breaking old solid piles and filling new piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810916598.7A CN108729445B (en) | 2018-08-13 | 2018-08-13 | Drill bit for breaking waste solid piles and method for breaking old solid piles and filling new piles |
Publications (2)
| Publication Number | Publication Date |
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| CN108729445A true CN108729445A (en) | 2018-11-02 |
| CN108729445B CN108729445B (en) | 2023-12-19 |
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| CN110952916A (en) * | 2019-11-28 | 2020-04-03 | 武汉金瑞威基础工程有限公司 | Construction method for crushing and dismantling deep part of old building pile foundation |
| CN111877344A (en) * | 2020-06-24 | 2020-11-03 | 中煤江南建设发展有限公司 | Old pipe pile breaking method |
| CN113897958A (en) * | 2021-10-22 | 2022-01-07 | 中铁四局集团建筑工程有限公司 | Precise cutting construction method for rotary digging pile |
| CN114352185A (en) * | 2021-12-13 | 2022-04-15 | 广东君豪高科地下空间建设有限公司 | Variable speed drill bit for underground space development field |
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