CN201874473U - Reducing drill bit - Google Patents
Reducing drill bit Download PDFInfo
- Publication number
- CN201874473U CN201874473U CN2010206449115U CN201020644911U CN201874473U CN 201874473 U CN201874473 U CN 201874473U CN 2010206449115 U CN2010206449115 U CN 2010206449115U CN 201020644911 U CN201020644911 U CN 201020644911U CN 201874473 U CN201874473 U CN 201874473U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- drill bit
- slide
- bar
- reducing drill
- 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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- Earth Drilling (AREA)
Abstract
The utility model relates to a reducing drill bit which comprises a columnar sliding shaft, wherein a sliding sleeve capable of sliding up and down is arranged on the sliding shaft; adjusting rods are fixed on the sliding sleeve; the lower ends of plate-like drilling cutters are connected at the lower end of the sliding shaft in a hinged manner; and the upper ends of the drilling cutters are sequentially connected with two sides of the adjusting rods and the sliding sleeve in a hinged manner. When the reducing drill bit is used, people can change the diameter of the drilling cutter as required; therefore, the reducing drill bit is convenient, quick and practical.
Description
Technical field
The utility model relates to a kind of drill bit of geological drilling, especially can change the expansion bit of cutting diameter.
Background technology
At present, its cutting diameter of known drill bit is fixed, and when people need cut the object of different-diameter, often needs to change different drill bits, uses very inconvenient.
The utility model content
In order to overcome the unalterable problem of existing drill bit cutting diameter, the utility model provides a kind of expansion bit, and this drill bit can allow people manually adjust the contact area of boring cutter and object as required, and is easy to use.
The technical scheme that its technical problem that solves the utility model adopts is: this drill bit has the slide-bar of a cylindricality, slide-bar is provided with a sliding sleeve that can slide up and down, fixing adjusting rod on the sliding sleeve, tabular brill cutter lower end is hinged and connected to the lower end of slide-bar, and the upper end order of boring cutter is hinged with adjusting rod and sliding sleeve both sides.When the less object of needs cuttings area, sliding sleeve is moved up, under the drive of adjusting rod, the contact area of boring cutter and object reduces; Otherwise, sliding sleeve is moved down.
The beneficial effects of the utility model are that people can change the diameter that bores cutter, convenient practicality as required.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural principle schematic diagram of the present utility model.
Among the figure, 1. sliding sleeve, 2. slide-bar, 3. adjusting rod 4. bores cutter.
The specific embodiment
In Fig. 1, this drill bit has the slide-bar 2 of a cylindricality, and slide-bar 2 is provided with a sliding sleeve that can slide up and down 1, is fixing adjusting rod 3 on the sliding sleeve 1, tabular brill cutter 4 lower ends are hinged and connected to the lower end of slide-bar 2, and the upper end order of boring cutter 4 is hinged with adjusting rod 3 and sliding sleeve 1 both sides.When the less object of needs cuttings area, sliding sleeve 1 is moved up, under the drive of adjusting rod 3, the contact area of boring cutter 4 and object reduces; Otherwise, sliding sleeve 1 is moved down.
Claims (1)
1. expansion bit is made up of sliding sleeve (1), slide-bar (2), adjusting rod (3), brill cutter (4); It is characterized in that: this drill bit has the slide-bar (2) of a cylindricality, slide-bar (2) is provided with a sliding sleeve that can slide up and down (1), fixing adjusting rod (3) on the sliding sleeve (1), tabular brill cutter (4) lower end is hinged and connected to the lower end of slide-bar (2), and the upper end order of boring cutter (4) is hinged with adjusting rod (3) and sliding sleeve (1) both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206449115U CN201874473U (en) | 2010-12-03 | 2010-12-03 | Reducing drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206449115U CN201874473U (en) | 2010-12-03 | 2010-12-03 | Reducing drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874473U true CN201874473U (en) | 2011-06-22 |
Family
ID=44162396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206449115U Expired - Fee Related CN201874473U (en) | 2010-12-03 | 2010-12-03 | Reducing drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874473U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103004329A (en) * | 2013-01-17 | 2013-04-03 | 山东理工大学 | Planting digging machine drill with variable diameter |
| CN108086919A (en) * | 2017-12-25 | 2018-05-29 | 郑州格瑞塔电子信息技术有限公司 | One kind is adjustable to adopt mining-drilling machine |
-
2010
- 2010-12-03 CN CN2010206449115U patent/CN201874473U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103004329A (en) * | 2013-01-17 | 2013-04-03 | 山东理工大学 | Planting digging machine drill with variable diameter |
| CN108086919A (en) * | 2017-12-25 | 2018-05-29 | 郑州格瑞塔电子信息技术有限公司 | One kind is adjustable to adopt mining-drilling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20111203 |