CN202926216U - Drill pipe with enlarging drill bit - Google Patents
Drill pipe with enlarging drill bit Download PDFInfo
- Publication number
- CN202926216U CN202926216U CN 201220646025 CN201220646025U CN202926216U CN 202926216 U CN202926216 U CN 202926216U CN 201220646025 CN201220646025 CN 201220646025 CN 201220646025 U CN201220646025 U CN 201220646025U CN 202926216 U CN202926216 U CN 202926216U
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- CN
- China
- Prior art keywords
- drill bit
- drill
- enlarging
- pipe
- drilling rod
- 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.)
- Expired - Fee Related
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a drill pipe with an enlarging drill bit, which is characterized in that an anchor rod with the enlarging drill bit comprises a drill pipe end head, the drill pipe, a drill bit, the enlarging drill bit and a telescopic inner pipe; the drill pipe end head is connected with the drill pipe, the enlarging drill bit comprises at least two groups of blades, the blades are uniformly distributed on the circumference of the drill bit, each group of blades consists of two blades which are connected by bolts, the other end of the drill pipe is connected with the blade at one end of the enlarging drill bit, the blade at the other end of the enlarging drill bit is connected with the drill bit through bolts, and the telescopic inner pipe is arranged between the drill bit and the drill pipe. The drill pipe with the enlarging drill bit is widely applicable to various cohesive soil and sandy oil and solves the problems of sand layer hole collapse, small pull-out resistance and large displacement in a very ideal manner, and compared with a common anchor rod, the reliability of the drill pipe with the enlarging drill bit is remarkably improved.
Description
Technical field
The utility model relates to engineering machinery, specifically a kind of drilling rod with enlarging drill bit.
Background technology
Jackrod structure in existing anchorage cable engineering construction is a straight-bar, and the induration that the stressed dependence steel strand of anchor cable and cement paste form and the frictional resistance of the soil body require the length of stressed size and anchor cable proportional; But under the impacts such as national relevant policies, construction environment and safety requirements, it is long that anchor cable can't design, stressed like this can't meeting design requirement; Generally design will increase anchor cable quantity or change support form to be processed, but in any case, all will greatly increase cost.
Summary of the invention
The purpose of this utility model is to provide a kind of drilling rod with enlarging drill bit, and it adopts the method for anchor cable end expanding, can greatly increase anchor cable soil body resistance, and reduces cost, reduces the impact of anchor cable construction surrounding environment.
The technical solution of the utility model is: the anchor pole that band enlarges drill bit is made of drilling rod termination, drilling rod, drill bit, expansion drill bit, scalable inner tube; Drilling rod termination jointed rod, the blade that enlarges drill bit is made of at least two groups, be evenly distributed on the circumference of drill bit, every group of blade forms and connects with bolt by two, the drilling rod other end connects an end blade that enlarges drill bit with bolt, other end blade is connected with drill bit with bolt, is provided with scalable inner tube between drill bit and drilling rod.
During anchor bolt construction, first be drilled into designing requirement with common drilling rod and enlarge the part original position, then common drilling rod is changed into the anchor pole that band of the present utility model enlarges drill bit, when creeping into, the pressure by drill bit and the soil body passes to scalable inner tube, scalable inner tube is shunk, enlarge that drill bit is crooked to be enlarged, due to the effect of drilling pressure, use to enlarge drill bit cutting soil and enlarge the aperture in the process of creeping into, until get into projected depth, last high-pressure slip-casting forms and enlarges the drill bit anchor pole.
The drilling rod that band of the present utility model enlarges drill bit can be widely used in various cohesive soils and sand, and ideal solved the layer of sand collapse hole, uplift resistance is little, the problem that displacement is large, the reliability ratio common bolt significantly improves.
Description of drawings
Fig. 1 is the jackrod structure schematic diagram (not expanded state) that band of the present utility model enlarges drill bit.
Fig. 2 is the 1-1 sectional view in Fig. 1
Fig. 3 is the jackrod structure schematic diagram (expanded state) that band of the present utility model enlarges drill bit.
In figure: 1-drilling rod termination, the 2-drilling rod, the 3-bolt, the scalable inner tube of 4-, 5-enlarges drill bit, the 6-drill bit, 7-enlarges the blade of drill bit.
The specific embodiment
As Figure 1-3, the band of the present utility model drilling rod that enlarges drill bit by drilling rod termination 1, drilling rod 2, drill bit 6, enlarge drill bit 5, scalable inner tube 4 consists of; Drilling rod termination 1 jointed rod 2, expansion drill bit 5 is made of the blade of three groups, and be evenly distributed on the circumference of drill bit (as shown in Figure 2), every group of blade forms by two and uses bolt 3 to connect, the other end of drilling rod 2 connects with bolt 3 an end blade that enlarges drill bit, other end blade is connected with drill bit 6 with bolt 3, and 2, drill bit 6 and drilling rod are provided with scalable inner tube 4.
During anchor cable construction, first be drilled into designing requirement with common drilling rod and enlarge the part original position, then common drilling rod is changed into the anchor pole that band of the present utility model enlarges drill bit, when creeping into, the pressure by drill bit and the soil body passes to scalable inner tube, scalable inner tube is shunk, enlarge that drill bit is crooked to be enlarged, due to the effect of drilling pressure, use to enlarge drill bit cutting soil and enlarge the aperture in the process of creeping into, until get into projected depth, last high-pressure slip-casting forms and enlarges the drill bit anchor pole.
Claims (2)
1. one kind with the drilling rod that enlarges drill bit, it is characterized in that being made of drilling rod termination, drilling rod, drill bit, expansion drill bit, scalable inner tube with the anchor pole that enlarges drill bit; Drilling rod termination jointed rod, the blade that enlarges drill bit is made of at least two groups, be evenly distributed on the circumference of drill bit, every group of blade forms and connects with bolt by two, the drilling rod other end connects an end blade that enlarges drill bit with bolt, other end blade is connected with drill bit with bolt, is provided with scalable inner tube between drill bit and drilling rod.
2. band according to claim 1 enlarges the drilling rod of drill bit, it is characterized in that the blade of described expansion drill bit consists of by three groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220646025 CN202926216U (en) | 2012-11-30 | 2012-11-30 | Drill pipe with enlarging drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220646025 CN202926216U (en) | 2012-11-30 | 2012-11-30 | Drill pipe with enlarging drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926216U true CN202926216U (en) | 2013-05-08 |
Family
ID=48216189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220646025 Expired - Fee Related CN202926216U (en) | 2012-11-30 | 2012-11-30 | Drill pipe with enlarging drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926216U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953684A (en) * | 2012-11-30 | 2013-03-06 | 中铁建工集团有限公司 | Drill rod with ream bit |
-
2012
- 2012-11-30 CN CN 201220646025 patent/CN202926216U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953684A (en) * | 2012-11-30 | 2013-03-06 | 中铁建工集团有限公司 | Drill rod with ream 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: 20130508 Termination date: 20211130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |