CN103460910A - Nut type drill bit fixing sleeve of corn harvester - Google Patents
Nut type drill bit fixing sleeve of corn harvester Download PDFInfo
- Publication number
- CN103460910A CN103460910A CN2013104419791A CN201310441979A CN103460910A CN 103460910 A CN103460910 A CN 103460910A CN 2013104419791 A CN2013104419791 A CN 2013104419791A CN 201310441979 A CN201310441979 A CN 201310441979A CN 103460910 A CN103460910 A CN 103460910A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- nut type
- fixing sleeve
- drill
- type 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.)
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- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention structurally provides a nut type drill bit fixing sleeve of a corn harvester. The nut type drill bit fixing sleeve is characterized in that the middle part of a drill sleeve is provided with an inner hole of which the diameter is a little larger than that of a drill bit, the inner hole is provided with internal threads in same thread pitch with a drill bit cutting groove, the drill bit can do rotation motion due to the internal threads when the drill bit stretches in the drill sleeve, and the thread pitch of the internal threads is larger than a self-locking angle. The nut type drill bit fixing sleeve provided by the invention has the advantages that the structure is simple, not only can the function of fixing the drill bit be realized, but also the drill bit can do rotation motion while doing stretching motion.
Description
Technical field
The present invention relates to the agricultural machinery field, be specifically related to a kind of corn picker nut type drill bit fixed cover.
Background technology
The tradition corn picker all only has the harvesting function; corn ear is directly entered after gathering in the hopper of machine; but the development along with mechanization; need corn picker to increase the peeling separating mechanism; in sheller unit, the threshing drill bit needs the automatic telescopic rotation; the back push rod is only to the flexible power of drill bit, and rotation realizes by the drill bit fixed cover.
Summary of the invention
For realizing the function of drill bit automatic rotation, the invention provides a kind of corn picker nut type drill bit fixed cover.
The technical solution used in the present invention is: a kind of corn picker nut type drill bit fixed cover, it is characterized in that having the endoporus that is a bit larger tham bit diameter in the middle of drill bushing, on endoporus, have and the internal thread of bit cutting groove with pitch, when drill bit is flexible in drill bushing, because internal thread is rotating.
Described internal thread pitch is greater than the self-locking angle.
Adopt beneficial effect of the present invention to be: the present invention is simple in structure, not only plays the effect of fixed drill bit, and is that drill bit is rotated in stretching motion.
The accompanying drawing explanation
Fig. 1 cutaway view of the present invention.
Reference numeral: 1-drill bushing, 2-drill bit.
Embodiment
A kind of corn picker nut type drill bit fixed cover as shown in Figure 1, is characterized in that having and the internal thread of drill bit 2 cutting slots with pitch in the middle of drill bushing 1, and drill bit 2 is interior when flexible at drill bushing 1, because internal thread is rotating.Described internal thread pitch is greater than the self-locking angle.
Claims (2)
1. a corn picker nut type drill bit fixed cover, is characterized in that having the endoporus that is a bit larger tham bit diameter in the middle of drill bushing, on endoporus, has and the internal thread of bit cutting groove with pitch, when drill bit is flexible in drill bushing, because internal thread is rotating.
2. a kind of corn picker nut type drill bit fixed cover claimed in claim 1, is characterized in that described internal thread pitch is greater than the self-locking angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104419791A CN103460910A (en) | 2013-09-26 | 2013-09-26 | Nut type drill bit fixing sleeve of corn harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104419791A CN103460910A (en) | 2013-09-26 | 2013-09-26 | Nut type drill bit fixing sleeve of corn harvester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103460910A true CN103460910A (en) | 2013-12-25 |
Family
ID=49786156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104419791A Withdrawn CN103460910A (en) | 2013-09-26 | 2013-09-26 | Nut type drill bit fixing sleeve of corn harvester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103460910A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2502647Y (en) * | 2001-11-06 | 2002-07-31 | 杜升荣 | Cranial drill |
| CN1408046A (en) * | 2000-03-02 | 2003-04-02 | 桑德维克公司 | Thread joint and rock drill element |
| CN201705334U (en) * | 2009-02-24 | 2011-01-12 | 布莱克和戴克公司 | Depthometer and complete set of appliances used with drill bit and drill bit |
| CN102648327A (en) * | 2009-08-05 | 2012-08-22 | 伯纳德·莱昂内尔·吉安 | Bit assembly for a down-the-hole hammer drill |
-
2013
- 2013-09-26 CN CN2013104419791A patent/CN103460910A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1408046A (en) * | 2000-03-02 | 2003-04-02 | 桑德维克公司 | Thread joint and rock drill element |
| CN2502647Y (en) * | 2001-11-06 | 2002-07-31 | 杜升荣 | Cranial drill |
| CN201705334U (en) * | 2009-02-24 | 2011-01-12 | 布莱克和戴克公司 | Depthometer and complete set of appliances used with drill bit and drill bit |
| CN102648327A (en) * | 2009-08-05 | 2012-08-22 | 伯纳德·莱昂内尔·吉安 | Bit assembly for a down-the-hole hammer drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20131225 |