CN205277309U - Square drill bit - Google Patents
Square drill bit Download PDFInfo
- Publication number
- CN205277309U CN205277309U CN201620025713.8U CN201620025713U CN205277309U CN 205277309 U CN205277309 U CN 205277309U CN 201620025713 U CN201620025713 U CN 201620025713U CN 205277309 U CN205277309 U CN 205277309U
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- CN
- China
- Prior art keywords
- square
- drill bit
- square tube
- stiffening plate
- countervane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to a technical field of drill bit discloses square drill bit, and square drill bit includes a square section of thick bamboo, blade and connection structure to have the square inner chamber of lower extreme open -ended in the square section of thick bamboo, and the blade extends along the periphery of square section of thick bamboo lower extreme to be arranged, and the lower extreme of blade extends to the below of a square section of thick bamboo, and connection structure connects the upper end at a square section of thick bamboo. Compared with the prior art, the utility model provides a square drill bit, the plus -pressure is carried out to a square section of thick bamboo to the utilization, because the lower extreme of blade extends to the below of a square section of thick bamboo to, the lower extreme of blade can cut remaining the soil layer, so in remaining the soil layer the square stake of shaping hole, and fashioned square stake hole is of high quality, construction cost is low, the efficiency of construction is higher.
Description
Technical field
The utility model relates to the technical field of drill bit, particularly relates to square drill bit.
Background technology
Rotary drilling rig is a kind of for becoming the pile foundation construction equipment of hole operation, and the advantages such as along with greatly developing of domestic foundation works in recent years, rotary drilling rig is efficient with it, quick, environmental protection, hole quality height are widely used. Rotary drilling rig mainly utilizes unit head to drive drilling rod, and by drilling rod by the motivating force of unit head with add pressure and be passed to cutting that drill bit realizes formation and creep into.
At present, on market, the drill bit of rotary drilling rig is circle, is mainly used in the construction of cylinder stake holes, like this, when rotary drilling rig run into need to construct square stake holes time, the drill bit of rotary drilling rig is then difficult to meet service requirements. In addition, due to the size reason of equipment, length and width are all less than to the square stake holes of 2m, subterranean continuous wall hydraulic grab also cannot be adopted to carry out construction operation.
Practical novel content
The purpose of this utility model is to provide square method for forming pile, it is intended to solving in prior art, circular bite is difficult to the problem of shaping square stake holes.
The utility model realizes like this, square drill bit, described square drill bit comprises square tube, blade and connects structure, described square tube has the square cavities of lower ending opening, described blade extends layout along the periphery of the lower end of described square tube, and the lower end of described blade extends to the lower section of described square tube, connect anatomical connectivity in the upper end of described square tube.
Further, the outer side wall of described square tube being convexly equipped with countervane, the outside surface of described countervane is plane shape.
Further, the sidewall of described countervane is skewed, forms scarp, and extends outwardly direction along the outer side wall of described square tube, described scarp by outer towards tilted.
Further, each outer side wall of described square tube is equipped with multiple described countervane, and the multiple countervane flush arrangement on the outer side wall of described square tube.
Further, the inner chamber of described square tube is provided with multiple interior stiffening plate, described interior reinforcement version is arranged between two adjacent sidewalls of described square tube, and two sides of described interior stiffening plate are connected with two sidewalls of described square tube respectively, enclose between described interior stiffening plate and two sidewalls of described square tube and close formation Delta Region.
Further, being provided with breach in described interior stiffening plate, described breach runs through internal surface and the outside surface of described interior stiffening plate.
Further, the breach of described interior stiffening plate extends layout in strip from top to bottom.
Further, the upper end of described blade is connected by the sidewall of fastening piece with described square tube.
Further, described connection structure comprises connecting joint, and described connecting joint is connected to the central position of described square tube upper end.
Further, the upper end of described square tube connects multiple upper reinforcing plate in erectting shape, and multiple described upper reinforcing plate is arranged around the periphery of described connecting joint, and the side of described upper reinforcing plate is connected to the outer side wall of described connecting joint.
Compared with prior art, the square drill bit that the utility model provides, utilizes square shaped cylinder to carry out adding pressure, owing to the lower end of blade extends to the lower section of square tube, thus, the lower end of blade can cut remaining soil layer, and then is remaining shaping square stake holes in soil layer; Further, shaping square stake holes quality is good, and construction cost is low, and operating efficiency is higher.
Accompanying drawing explanation
Fig. 1 places the schematic perspective view of square casing after the perforate that provides of the utility model embodiment in fill stratum;
Fig. 2 is that the circular bite that utilizes that the utility model embodiment provides draws the schematic perspective view one in hole;
Fig. 3 is that the circular bite that utilizes that the utility model embodiment provides draws the schematic perspective view two in hole;
Fig. 4 is the schematic perspective view utilizing square bit bore that the utility model embodiment provides;
Fig. 5 be the utility model embodiment provide utilize circular bite to draw hole after schematic top plan view;
Fig. 6 is the schematic perspective view of the square drill bit that the utility model embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated. It is to be understood that specific embodiment described herein is only in order to explain the utility model, and it is not used in restriction the utility model.
Below in conjunction with specific embodiment, realization of the present utility model is described in detail.
With reference to shown in Fig. 1��6, it it is the better embodiment that the utility model provides.
With reference to shown in Fig. 6, in the present embodiment, square drill bit 12 comprises square tube 123, blade 126 and connects structure, wherein, square tube 123 has the square cavities of lower ending opening, blade 126 extends layout along the periphery of square tube 123 times ends, and the lower end of blade 126 extends to the lower section of square tube 123, connects the upper end that structure is then connected to square tube 123. Like this, when needs utilize square drill bit 12 to creep into, the connection structure of square drill bit 12 is connected with the drilling rod of rotary drilling rig, utilize drilling rod automatically and the unit head of rotary drilling rig add the blade 126 that pressure is passed to square drill bit 12, and then, the blade of square drill bit 12 126 square shaped casings 11 have cut remaining soil layer 3 or directly cutting remaining in soil layer 3 for circular hole 14, thus complete square stake holes 10 to repair wall shaping.
The square drill bit 12 of above-mentioned offer, square shaped cylinder 123 is utilized to carry out adding pressure, owing to the lower end of blade 126 extends to the lower section of square tube 126, thus, the lower end of blade 126 can cut remaining soil layer 3, and then is remaining shaping square stake holes 10 in soil layer 3; Further, shaping square stake holes 10 quality is good, and construction cost is low, and operating efficiency is higher.
Shown in Fig. 5, the barrette hole forming method that the present embodiment provides, comprises following construction procedure:
1), after needing the scene of shaping square stake holes 10 to complete stake position fixed point and pile-forming machine perching, perforate also transfers square casing 11, the lower end of square casing 11, through fill stratum 2, extends to and remains in soil layer 3, and the top on ground is extended in the upper end of square casing 11;
2), utilize the circular bite 13 of rotary drilling rig repeatedly to draw hole in square casing 11, formed and multiple extend to the circular hole 14 remaining in soil layer 3, and the diameter of circular bite 13 is consistent with the width of square stake holes 10 to be formed; Multiple circular hole 14 becomes row's sequentially connected layout along the length direction of square stake holes 10 to be formed, and the extension length in multiple circular hole 14 is consistent with the length of square stake holes 10 to be formed;
3), on the basis in above-mentioned shaping circular hole 14, utilize square drill bit 12 to creep in square casing 11 from top to bottom, form square stake holes 10.
Above-mentioned barrette hole forming method has the following advantages:
1), square stake holes 10 shaping speed is fast
Grope through site operation, establish the working procedure of a set of optimization, that is: the square casing 11 �� common rotary drilling rig circular bite 13 of perforate �� transfer draws hole �� square drill bit 12 and creeps into and repair hole squarely stake holes 10. A square stake holes 10 within 10, three hours, can be completed for the square stake holes of 2.0m �� 1.2m �� 15m (long �� wide �� dark).
2), square stake holes 10 quality is guaranteed
Drawing on the basis in hole at common rotary drilling rig circular bite 13, square drill bit 12 creeps into from top to bottom and is shaped as square stake holes 10, has concurrently simultaneously and repaiies hole effect, it is ensured that square 10 week of stake holes is complete, noresidue.
3), construction cost is low
Speed of application is fast, unit overall efficiency height, and mechanical execution cost is relatively low; Square drill bit 12 structure is simple, is easy to processing, and production and maintenance cost are low, good economy performance; Construction process does not use mud circulation, greatly reduces the usage quantity of mud and the outer freight volume of useless slurry waste residue, reduce construction cost.
4), workyard is cleaning, field management simplifies
Being mainly manifested in following aspect: construction mechanical type is few, constructability manages; Construction does not use mud circulation, and scene is no longer muddy, and place is more cleaning, and site operation environment is improved greatly; Current earthwork outward transport is a big principal element of engineering constraint construction speed, especially difficult treatment transported outward especially by useless slurry waste residue, this square stake holes forming method has lacked mud hole internal recycle, greatly reduce the daily management work such as waste mud storage, outward transport, on-the-spot shoofly, equipment are put and can be become more orderly, and corresponding management link is simplified greatly.
Specifically, the physical dimension of square casing 11 is slightly larger than the size of square stake holes 10 to be formed, and ensures through fill stratum 2, thus avoids in the process of shaping square stake holes 10, and the phenomenon of collapse hole occurs.
Construction procedure 2 above-mentioned) in, tangent connection between adjacent circular hole 14, or, according to the diameter of the length of square stake holes 10 to be formed and circular hole 14, overlap joint can also be intersected between adjacent circular hole 14, specifically determine by actual needs.
In the present embodiment, it is preferable that select circular bite 13 to draw hole twice, form the circular hole 14 of two overlap joints.
After square drill bit 12 has crept into from top to bottom, need to exit from bottom to top from square stake holes 10, in order to avoid when carrying brill, the hole wall of square stake holes 10 square shaped stake holes 10 damages, in the present embodiment, the outer side wall of square tube 123 is convexly equipped with countervane 124, the outside surface of this countervane 124 is plane shape, thus, when carrying brill, utilize the outside surface of countervane 124 to contact with the hole wall of square stake holes 10, avoid card to enter and hole wall destroys hole wall, and the agent structure avoiding square drill bit 12 is worn, extend the work-ing life of square drill bit 12.
Specifically, each outer side wall of square tube 123 is provided with multiple countervane 124, and multiple countervanes 124 flush arrangement on the outer side wall of square tube 123, like this, can ensure that square drill bit 12 is when mentioning, utilize multiple countervane 124 to realize multi-faceted guiding.
In addition, the sidewall of countervane 124 is skewed, form scarp 125, and extend outwardly direction along the outer side wall of square tube 123, scarp 125 is by being in tilted layout inwardly outward, and whole countervane 124 forms outer little interior big trapezoidal shape, like this, when carrying brill, utilize being in tilted layout of countervane 124 scarp 125, avoid the scarp 125 of countervane 124 to block with the hole wall of square stake holes 10.
In the present embodiment, the upper end of blade 126 is connected by the sidewall of the fastening pieces such as bolt with square tube 123, like this, after blade 126 weares and teares, then directly by operation fastening piece, can carry out the replacing of blade 126.
In the present embodiment, in order to strengthen the structural strength of square tube 123, the inner chamber of square tube 123 is provided with interior stiffening plate, this interior stiffening plate is arranged between two adjacent sidewalls of square tube 123, and two sidewalls connections that the dual-side of interior stiffening plate is adjacent with square tube 123 respectively, thus enclose between interior stiffening plate two sidewalls adjacent with square tube 123 to close and form Delta Region, like this, due to square tube 123 squarely shape, thus need to arrange four interior stiffening plates in the inner chamber of square tube 123, in utilizing, the structure of whole square tube 123 is played the effect of reinforcing by stiffening plate.
In addition, owing to square drill bit 12 is when creeping into or carry brill, mainly the countervane 124 of square drill bit 12 contacts with the hole wall of square stake holes 10, and the characteristic due to neutral wilkinite, the resistance of square shaped drill bit 12 is bigger, although bigger add pressure under, square drill bit 12 can complete to creep into, but the impact of the hole wall of square shaped stake holes 10 is bigger, even there will be the phenomenon of collapse hole, therefore, in practice, then need the width by countervane 124 suitably to reduce. In the present embodiment, enclose between two sidewalls that interior stiffening plate is adjacent with square tube 123 to close and form Delta Region, like this, the casting space of four corners in the inner chamber of square tube 123 can be strengthened, thus the width reducing countervane 124 is arranged, cost-saving, and be conducive to improving workability and the efficiency of square drill bit 12.
Square drill bit 12, when creeping into, easily piles up earth in above-mentioned Delta Region, and, along with the intensification of drilling depth, after earth dense extrusion, bigger resistance can be formed, cause square drill bit 12 to creep into difficulty. In the present embodiment, the middle part of each interior stiffening plate is formed with breach, this breach runs through internal surface and the outside surface of interior stiffening plate, like this, after Delta Region extrudes earth, the earth of Delta Region then can be expressed in the inner chamber of square tube 123 by breach, avoids forming the closely knit state of earth accumulation in Delta Region, reduces the resistance that square drill bit 12 creeps into.
Specifically, in order to the earth being more convenient in Delta Region is extruded, the breach of interior stiffening plate extends in bar shaped from top to bottom to be arranged, thus the direction coordinating square drill bit 12 to creep into, facilitate the earth in Delta Region to extrude.
Or, breach runs through the upper end of interior stiffening plate and lower end, and interior stiffening plate is divided into two halves; Or, breach is then formed in interior stiffening plate, it is not necessary to run through the upper end of interior stiffening plate and lower end, and concrete setting can depend on the needs.
In the present embodiment, connect structure and comprise connecting joint 122, this connecting joint 122 is connected to the central position of square tube 123 upper end, like this, after connecting joint 122 is connected with the drilling rod of rotary drilling rig, ensure the deadweight of drilling rod and rotary drilling rig unit head add the position, center that pressure can act on square tube 123 so that square tube 123 uniform force, it is possible to realize steadily creeping into or carrying brill.
In order to strengthen the strength of joint of connecting joint 122 with square tube 123 and firm property, in the present embodiment, being provided with upper reinforcing plate 121 on square tube 123, this upper reinforcing plate 121 is connected to the upper end of square tube 123 in erectting shape, and its side is connected with the outer side wall of connecting joint 122.
Concrete, the upper end of square tube 123 is furnished with multiple upper reinforcing plate 121, and the plurality of upper reinforcing plate 121, around connecting joint 122 periphery, becomes to arrange around shape. In the present embodiment, owing to square tube 123 is square-shaped, accordingly, connecting joint 122 is also square stake, and, square tube 123 is formed four upper reinforcing plates 121, and, stiffening plate be arranged on square tube 123, the diagonal lines direction along square tube 123 upper surface extends, and the side of stiffening plate is then connected to the side of connecting joint 122.
The foregoing is only better embodiment of the present utility model; not in order to limit the utility model; all any amendment, equivalent replacement and improvement etc. done within spirit of the present utility model and principle, all should be included within protection domain of the present utility model.
Claims (10)
1. square drill bit, it is characterized in that, described square drill bit comprises square tube, blade and connects structure, described square tube has the square cavities of lower ending opening, described blade extends layout along the periphery of the lower end of described square tube, and the lower end of described blade extends to the lower section of described square tube, connect anatomical connectivity in the upper end of described square tube.
2. square drill bit as claimed in claim 1, it is characterised in that, the outer side wall of described square tube is convexly equipped with countervane, the outside surface of described countervane is plane shape.
3. square drill bit as claimed in claim 2, it is characterised in that, the sidewall of described countervane is skewed, forms scarp, and extends outwardly direction along the outer side wall of described square tube, described scarp by outer towards tilted.
4. square drill bit as claimed in claim 2, it is characterised in that, each outer side wall of described square tube is equipped with multiple described countervane, and the multiple countervane flush arrangement on the outer side wall of described square tube.
5. square drill bit as described in item as arbitrary in Claims 1-4, it is characterized in that, the inner chamber of described square tube is provided with multiple interior stiffening plate, described interior reinforcement version is arranged between two adjacent sidewalls of described square tube, and two sides of described interior stiffening plate are connected with two sidewalls of described square tube respectively, enclose between described interior stiffening plate and two sidewalls of described square tube and close formation Delta Region.
6. square drill bit as claimed in claim 5, it is characterised in that, described interior stiffening plate is provided with breach, described breach runs through internal surface and the outside surface of described interior stiffening plate.
7. square drill bit as claimed in claim 6, it is characterised in that, the breach of described interior stiffening plate extends in strip from top to bottom to be arranged.
8. square drill bit as described in item as arbitrary in Claims 1-4, it is characterised in that, the upper end of described blade is connected by the sidewall of fastening piece with described square tube.
9. square drill bit as described in item as arbitrary in Claims 1-4, it is characterised in that, described connection structure comprises connecting joint, and described connecting joint is connected to the central position of described square tube upper end.
10. square drill bit as claimed in claim 9, it is characterized in that, the upper end of described square tube connects multiple upper reinforcing plate in erectting shape, and multiple described upper reinforcing plate is arranged around the periphery of described connecting joint, and the side of described upper reinforcing plate is connected to the outer side wall of described connecting joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620025713.8U CN205277309U (en) | 2016-01-12 | 2016-01-12 | Square drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620025713.8U CN205277309U (en) | 2016-01-12 | 2016-01-12 | Square drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205277309U true CN205277309U (en) | 2016-06-01 |
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ID=56061892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620025713.8U Expired - Fee Related CN205277309U (en) | 2016-01-12 | 2016-01-12 | Square drill bit |
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| Country | Link |
|---|---|
| CN (1) | CN205277309U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569572A (en) * | 2016-01-12 | 2016-05-11 | 深圳市工勘岩土集团有限公司 | Square drill bit |
-
2016
- 2016-01-12 CN CN201620025713.8U patent/CN205277309U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569572A (en) * | 2016-01-12 | 2016-05-11 | 深圳市工勘岩土集团有限公司 | Square drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20220112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |