CN202918659U - Anti-loosening rotary blade structure - Google Patents
Anti-loosening rotary blade structure Download PDFInfo
- Publication number
- CN202918659U CN202918659U CN 201220641445 CN201220641445U CN202918659U CN 202918659 U CN202918659 U CN 202918659U CN 201220641445 CN201220641445 CN 201220641445 CN 201220641445 U CN201220641445 U CN 201220641445U CN 202918659 U CN202918659 U CN 202918659U
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- CN
- China
- Prior art keywords
- installing hole
- rotary blade
- tool magazine
- knife
- utility
- 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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Abstract
The utility model discloses an anti-loosening rotary blade structure, which comprises a tool magazine and a rotary blade arranged in the tool magazine, wherein an installing hole of the tool magazine is in the form of an isosceles trapezoid and the bottom angles of the isosceles trapezoid are 80-88 degrees; a tool shank of the rotary blade is arranged in the installing hole, and the shape of the cross section of the tool shank adapts to the shape of the installing hole; and the tool shank is fastened in the installing hole through a bolt. When the tool shank is inserted into the installing hole, inclined surfaces are combined, so that stress can be effectively prevented from being concentrated onto the bolt, and loosening is prevented.
Description
Technical field
The utility model relates to the rotovator technical field, is specifically related to a kind of anti-loosening rotary blade structure.
Background technology
At present, rotovator, because it has the characteristics such as the hack ability is strong, cultivated rear earth's surface is smooth and is widely used as a kind of cultivation machinery.
The operation principle of rotovator is to utilize the rotary blade that is installed in rotating shaft to carry out fragmentation to the soil.And in a single day run into when lump, stone are arranged in the soil, rotary blade is easy to become flexible.Mainly because present rotary blade structure is more traditional: at tool magazine, the rectangle installing hole is set, and then the rectangular shaft that the handle of a knife of rotary blade is set to coordinate with it utilizes nut to carry out fastening.Have gap (this gap is one of reason that causes cutter and tool magazine damage) under this structure between handle of a knife and tool magazine, and the stressed meeting of rotary blade focuses on nut, thereby be easy to cause damage.
The utility model content
The technical problem that the utility model solves is to provide a kind of anti-loosening rotary blade structure, thereby solves the problem in the above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
A kind of anti-loosening rotary blade structure comprises tool magazine and the rotary blade that is installed in described tool magazine, it is characterized in that, the installing hole of described tool magazine is shaped as isosceles trapezoid, and the angle at base angle is 80～88 degree; The handle of a knife of described rotary blade is installed in described installing hole, and the shape of the shape of cross section of described handle of a knife and described installing hole adapts; Described handle of a knife utilizes bolted in described installing hole.
As a kind of improvement, the base angle angle of described installing hole is 84 degree.
Owing to having adopted above technical scheme, the utlity model has following beneficial effect:
Rotary blade structure of the present utility model, the installing hole shape of tool magazine is designed to isosceles trapezoid, and the angle at base angle is 80～88 degree, the shape of cross section of handle of a knife and the shape of described installing hole adapt simultaneously, the angle at base angle is that 80～88 degree are that the inventor draws through repeatedly exploring, under this angle, not only can guarantee the intensity of handle of a knife, and handle of a knife is combined closely with installing hole.Based on this structure, when handle of a knife inserted described installing hole, the inclined-plane combined, and can effectively avoid stress all to concentrate on bolt, prevents from becoming flexible.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation of tool magazine installing hole.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with specific embodiment, further set forth the utility model.
Referring to Fig. 1 and Fig. 2, a kind of anti-loosening rotary blade structure comprises tool magazine 1 and the rotary blade that is installed in described tool magazine 1, it is characterized in that, the installing hole 3 of described tool magazine 1 is shaped as isosceles trapezoid, and the angle at base angle is 84 degree; The handle of a knife 2 of described rotary blade is installed in described installing hole 3, and the shape of the shape of cross section of described handle of a knife 2 and described installing hole 3 adapts; Described handle of a knife 2 utilizes bolt 4 to be anchored in described installing hole 3.
Above demonstration and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. an anti-loosening rotary blade structure, comprise tool magazine and the rotary blade that is installed in described tool magazine, and it is characterized in that: the installing hole of described tool magazine is shaped as isosceles trapezoid, and the angle at base angle is 80～88 degree; The handle of a knife of described rotary blade is installed in described installing hole, and the shape of the shape of cross section of described handle of a knife and described installing hole adapts; Described handle of a knife utilizes bolted in described installing hole.
2. a kind of anti-loosening rotary blade structure according to claim 1 is characterized in that: the base angle angle of described installing hole is 84 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220641445 CN202918659U (en) | 2012-11-20 | 2012-11-20 | Anti-loosening rotary blade structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220641445 CN202918659U (en) | 2012-11-20 | 2012-11-20 | Anti-loosening rotary blade structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202918659U true CN202918659U (en) | 2013-05-08 |
Family
ID=48208655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220641445 Expired - Fee Related CN202918659U (en) | 2012-11-20 | 2012-11-20 | Anti-loosening rotary blade structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202918659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108124523A (en) * | 2017-12-19 | 2018-06-08 | 大连理工大学 | A kind of anti-dropout rotary blade fixed structure |
-
2012
- 2012-11-20 CN CN 201220641445 patent/CN202918659U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108124523A (en) * | 2017-12-19 | 2018-06-08 | 大连理工大学 | A kind of anti-dropout rotary blade fixed structure |
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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: 20151120 |
|
| EXPY | Termination of patent right or utility model |