CN206111092U - Prevent collapsing crowded counterboring utensil of bidirectional screw of hole and undergauge - Google Patents
Prevent collapsing crowded counterboring utensil of bidirectional screw of hole and undergauge Download PDFInfo
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- CN206111092U CN206111092U CN201621176562.2U CN201621176562U CN206111092U CN 206111092 U CN206111092 U CN 206111092U CN 201621176562 U CN201621176562 U CN 201621176562U CN 206111092 U CN206111092 U CN 206111092U
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Abstract
The utility model discloses a prevent collapsing crowded counterboring utensil of bidirectional screw of hole and undergauge, the drilling rod bottom is connected with the crowded counterboring head of bidirectional screw, and the top is equipped with the connecting piece, and the drilling rod is equipped with the steel outward and protects a section of thick bamboo, and the steel protects and is connected through the flange dish between a section of thick bamboo and the drilling rod, and the last centering support that is equipped with of drill pipe wall protects a section of thick bamboo to the steel and plays to stablize supporting role. The utility model discloses the technique is feasible, simple structure, economical and practical, utilizes the crowded native bored concrete pile of this kind of drilling tool construction spiral, and the steel protects a section of thick bamboo and descends or promote along with the drill bit is synchronous, can be in time carries out the rigidity dado to the crowded stake hole lateral wall of accomplishing before back, thick liquid material are pressed and is irritated that expands, the emergence of prevent to collapse hole and undergauge phenomenon, and the one -tenth stake quality of native bored concrete pile is crowded to the improvement spiral, is applicable to including various bad grounds such as flour sand, soft clays.
Description
Technical field
This utility model is related to a kind of bidirectional helix extruding expanding drilling tool of the anti-collapse hole and undergauge for being applied to pile foundation engineering field.
Background technology
In pile foundation engineering field, stake is typically divided into by non-Squeezing Soil Pile, part Squeezing Soil Pile according to impact of the pile to stratum
And the complete class of Squeezing Soil Pile three.Because non-Squeezing Soil Pile (such as drilled pile, Percussion Piles, CFA stakes) is in the side such as technology, environmental protection, cost
There are problems in face, pile foundation engineering circle be devoted to developing always a kind of high capacity, construction environment pollute less, good in economic efficiency
New soil compaction type stake.China in Recent Years Jing Ye engineering technology company limited has researched and developed successfully a kind of complete soil compaction type spiral soil compaction
Bored concrete pile, the helix extruding-enlarging drill bit/drilling tool of particular design is extruded into the soil body in original stake holes in the wall of stake holes side and base during construction
This does not discharge ground, improves physics, the mechanical property of soil around pile, improves bearing capacity of pile foundation, while in whole work progress
Pollution-free, without friction, low noise.At present its representative patents is as follows：
" bidirectional helix extruding-enlarging pile construction method and the bidirectional helix closed extruding-enlarging aiguille " of application number 200710063983.3
Utility model patent
" adjustable multiple coil extruding and expanding drilling tool " utility model patent of application number 201010172621.X
" the bidirectional helix extruding enlarging aiguille of controllable soil compaction amount " utility model patent of application number 201010177548.5
" the bidirectional helix extruding enlarging aiguille that can be lengthened " utility model patent of application number 201020169448.3
However, such as being applied in flour sand or high-moisture percentage bury stratum in some special formations using above-mentioned drill bit/drilling tool
Man-hour, or when pile depth is deeper, easily there is collapse hole or contracting in the stake holes side wall after the completion of pile hole extruding-extending, before pressure injection material
Footpath, causes pile silted, the problems such as pile bottom sediment is blocked up, reduces pile quality.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, with a kind of technical feasibility, simple structure, economical and practical
Mode a kind of bidirectional helix extruding counterboring that can effectively prevent anti-collapse hole and undergauge in spiral extrusion soil filling pile work progress is provided
Tool.
The technical solution adopted in the utility model is：The bidirectional helix extruding expanding drilling tool of a kind of anti-collapse hole and undergauge, including in
Empty drilling rod, bidirectional helix extruding enlarging aiguille, connector, steel pile casting and to medium-height trestle；
The bottom of the hollow drill pipe is connected with bidirectional helix extruding enlarging aiguille, and the top of hollow drill pipe is provided with connector, in
The periphery of empty drilling rod is provided near steel pile casting, the connector circle of welding one ring flange one, the steel on the outer wall of hollow drill pipe
Ring flange two is enclosed in welding one on the outer wall of casing top, and the ring flange one is adapted with ring flange two, and is bolted into
One entirety；It is welded with some to medium-height trestle on the outer wall of the hollow drill pipe, ring flange one and ring flange is located to medium-height trestle
Two lower section.
Preferably, the steel pile casting material is using Q235 steel, the length that steel pile casting is arranged is：From hollow drilling-rod external wall method
Blue disk one extends to the top of bidirectional helix extruding enlarging aiguille；The wall thickness of steel pile casting is between 5～10mm.
Preferably, the external diameter to medium-height trestle is slightly less than the internal diameter of steel pile casting, the internal diameter of the steel pile casting is equal to double
To the maximum outside diameter of helix extruding-enlarging drill bit.
Preferably, steel pile casting bottom tube wall makes cutting shoe.
Implement the construction technology of spiral extrusion soil filling pile using above-mentioned drilling tool, comprise the following steps：
1) pile work drilling machine of the bidirectional helix extruding expanding drilling tool of anti-collapse hole and undergauge will be installed according to stake holes unwrapping wire position just
Position, gets out concrete pump and the piling for needing.Piling is concrete grout material or cement, flyash and crushed stone slurry material and steel reinforcement cage.
2) start moment of torsion and vertical pressure that pile work drilling machine applies dextrorotation, carry out backspin using bidirectional helix extruding enlarging aiguille and squeeze
Expand pore-forming, during this, steel pile casting synchronously declines with hollow drill bit, and the top stake holes side wall after the completion of squeezed can be entered in time
Row retaining wall, prevents collapse hole and undergauge, and lower spiral expanded finished hole process is till drill bit reaches design hole depth.
3) after the completion of first step lower spiral expanded finished hole, moment of torsion and axle upwards that pile work drilling machine applies clockwise direction are started
To lifting power, bidirectional helix extruding enlarging aiguille is moved upwards and is rotated squeezed stake holes again, in the process, start grouting pump,
The hollow channel of Jing hollow drill pipes presses injection material in stake holes, squeezed by starching material pressure, makes to complete to starch the stake holes that material pressure is filled
Diameter meets design requirement, does not press the stake holes section of injection material and collapse hole and undergauge also will not occur under the retaining wall of steel pile casting, and second
Squeezed filling process is revolved in step and lasts till that hollow drill bit is promoted to earth's surface.
4) according to design requirement, according to known methods ready steel reinforcement cage is inserted in stake holes slurry material, is so far formed
The spiral extrusion soil filling pile of cylinder.
The beneficial effects of the utility model：1) by setting up steel pile casting outside drilling rod, lower brill and when carrying brill steel pile casting together with
Bidirectional helix extruding enlarging aiguille declines together and is lifted, and realizes the rigid retaining wall to stake holes wall after the completion of squeezed, before pressure injection material
Function, it is therefore prevented that the appearance of collapse hole and undergauge phenomenon in flour sand and bury stratum.2) by setting up on drilling-rod external wall
Support, after steel pile casting is enclosed within drilling rod, there is support, Stabilization to steel pile casting, lower brill and steel pile casting will not left and right pendulum when carrying brill
The dynamic disturbance stake holes side wall soil body, and stake holes has higher perpendicularity.3) steel pile casting bottom tube wall is made sharp cutting shoe, steel
Casing can reduce penetration resistance when declining with drill bit, while the soil block or stone sticked on stake holes wall can be cut, make stake
Hole wall is more smooth.
Description of the drawings
Fig. 1 is the bidirectional helix extruding-enlarging drilling tool structure schematic diagram of a kind of anti-collapse hole of this utility model and undergauge；
Fig. 2 is connected with drilling rod for the steel pile casting of a kind of anti-collapse hole of this utility model and the bidirectional helix extruding expanding drilling tool of undergauge and shows
It is intended to；
Fig. 3 is the steel pile casting bottom tube wall cutting shoe of the bidirectional helix extruding expanding drilling tool of a kind of anti-collapse hole of this utility model and undergauge
Schematic diagram.
Specific embodiment
This utility model is described further with reference to the accompanying drawings and detailed description.
As Figure 1-3, a kind of bidirectional helix extruding expanding drilling tool of anti-collapse hole and undergauge, including hollow drill pipe 1, bidirectional screw
Extruding-enlarging aiguille 2, connector 3, steel pile casting 4 and to medium-height trestle 8；
The bottom of the hollow drill pipe 1 is connected with bidirectional helix extruding enlarging aiguille 2, and the top of hollow drill pipe 1 is provided with connector
3, the periphery of hollow drill pipe 1 is provided near steel pile casting 4, the connector 3 circle of welding one ring flange one on the outer wall of hollow drill pipe 1
5, ring flange 26 is enclosed in welding one on the top outer wall of the steel pile casting 4, and the ring flange 1 is adapted with ring flange 26, and leads to
Cross bolt 7 and connect into an entirety；It is welded with some to medium-height trestle 8 on the outer wall of the hollow drill pipe 1, medium-height trestle 8 is located at
The lower section of ring flange 1 and ring flange 26.
The material of the steel pile casting 4 adopt Q235 steel, steel pile casting 4 arrange length be：From the outer wall ring flange one of hollow drill pipe 1
5 tops for extending to bidirectional helix extruding enlarging aiguille 2；The wall thickness of steel pile casting 4 is between 5～10mm.The external diameter to medium-height trestle 8
The internal diameter of steel pile casting 4 is slightly less than, the internal diameter of the steel pile casting 4 is equal to the maximum outside diameter of bidirectional helix extruding enlarging aiguille 2.The steel shield
4 bottom tube walls of cylinder make cutting shoe.
Implement the construction technology of spiral extrusion soil filling pile using this utility model, comprise the following steps：
1) pile work drilling machine of the bidirectional helix extruding expanding drilling tool of anti-collapse hole and undergauge will be installed according to stake holes unwrapping wire position just
Position, gets out concrete pump and the piling for needing.Piling is concrete grout material or cement, flyash and crushed stone slurry material and steel reinforcement cage.
2) start moment of torsion and vertical pressure that pile work drilling machine applies dextrorotation, carry out backspin using bidirectional helix extruding enlarging aiguille and squeeze
Expand pore-forming, during this, steel pile casting synchronously declines with hollow drill bit, and the top stake holes side wall after the completion of squeezed can be entered in time
Row retaining wall, prevents collapse hole and undergauge, and lower spiral expanded finished hole process is till drill bit reaches design hole depth.
3) after the completion of first step lower spiral expanded finished hole, moment of torsion and axle upwards that pile work drilling machine applies clockwise direction are started
To lifting power, bidirectional helix extruding enlarging aiguille is moved upwards and is rotated squeezed stake holes again, in the process, start grouting pump,
The hollow channel of Jing hollow drill pipes presses injection material in stake holes, squeezed by starching material pressure, makes to complete to starch the stake holes that material pressure is filled
Diameter meets design requirement, does not press the stake holes section of injection material and collapse hole and undergauge also will not occur under the retaining wall of steel pile casting, and second
Squeezed filling process is revolved in step and lasts till that hollow drill bit is promoted to earth's surface.
4) according to design requirement, according to known methods ready steel reinforcement cage is inserted in stake holes slurry material, is so far formed
The spiral extrusion soil filling pile of cylinder.
It should be pointed out that for those skilled in the art, before without departing from this utility model principle
Put, some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection domain of the present utility model.This reality
Applying not clear and definite each ingredient in example can use prior art to be realized.
Claims (4)
1. the bidirectional helix extruding expanding drilling tool of a kind of anti-collapse hole and undergauge, it is characterised in that：Including hollow drill pipe, bidirectional helix extruding-enlarging
Drill bit, connector, steel pile casting and to medium-height trestle；
The bottom of the hollow drill pipe is connected with bidirectional helix extruding enlarging aiguille, and the top of hollow drill pipe is provided with connector, hollow brill
The periphery of bar is provided near steel pile casting, the connector circle of welding one ring flange one, the steel pile casting on the outer wall of hollow drill pipe
Ring flange two is enclosed in welding one on the outer wall of top, and the ring flange one is adapted with ring flange two, and is bolted into one
It is overall；It is welded with some to medium-height trestle on the outer wall of the hollow drill pipe, ring flange one and ring flange two is located to medium-height trestle
Lower section.
2. the bidirectional helix extruding expanding drilling tool of a kind of anti-collapse hole according to claim 1 and undergauge, it is characterised in that：The steel
Casing material adopt Q235 steel, steel pile casting arrange length be：Bidirectional helix extruding is extended to from hollow drilling-rod external wall ring flange one
The top of enlarging aiguille；The wall thickness of steel pile casting is between 5 ~ 10mm.
3. the bidirectional helix extruding expanding drilling tool of a kind of anti-collapse hole according to claim 1 and undergauge, it is characterised in that：It is described right
The external diameter of medium-height trestle is slightly less than the internal diameter of steel pile casting, and the internal diameter of the steel pile casting is equal to outside the maximum of bidirectional helix extruding enlarging aiguille
Footpath.
4. the bidirectional helix extruding expanding drilling tool of a kind of anti-collapse hole according to claim 1 and undergauge, it is characterised in that：The steel
Casing bottom tube wall makes cutting shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621176562.2U CN206111092U (en) | 2016-10-27 | 2016-10-27 | Prevent collapsing crowded counterboring utensil of bidirectional screw of hole and undergauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621176562.2U CN206111092U (en) | 2016-10-27 | 2016-10-27 | Prevent collapsing crowded counterboring utensil of bidirectional screw of hole and undergauge |
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| Publication Number | Publication Date |
|---|---|
| CN206111092U true CN206111092U (en) | 2017-04-19 |
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| CN201621176562.2U Active CN206111092U (en) | 2016-10-27 | 2016-10-27 | Prevent collapsing crowded counterboring utensil of bidirectional screw of hole and undergauge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351585A (en) * | 2016-10-27 | 2017-01-25 | 东南大学 | Hole collapse and shrinkage prevention bidirectional spiral extrusion and expansion drilling tool and construction technology thereof |
-
2016
- 2016-10-27 CN CN201621176562.2U patent/CN206111092U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351585A (en) * | 2016-10-27 | 2017-01-25 | 东南大学 | Hole collapse and shrinkage prevention bidirectional spiral extrusion and expansion drilling tool and construction technology thereof |
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