CN203161859U - Flange mounting hole boss structure - Google Patents
Flange mounting hole boss structure Download PDFInfo
- Publication number
- CN203161859U CN203161859U CN 201320065888 CN201320065888U CN203161859U CN 203161859 U CN203161859 U CN 203161859U CN 201320065888 CN201320065888 CN 201320065888 CN 201320065888 U CN201320065888 U CN 201320065888U CN 203161859 U CN203161859 U CN 203161859U
- Authority
- CN
- China
- Prior art keywords
- flange
- boss
- mounting hole
- hole
- boss structure
- 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 relates to a flange mounting hole boss structure which comprises a flange fork. A flange fork hole is arranged in each boss which is arranged at a flange fork hole position of the flange fork, and protrusions in certain height are arranged on the upper surface of each flange fork hole and the plane at the flange fork hole position. The flange mounting hole boss structure has the advantages that a blank at a mounting hole is made into a boss, and the protrusions in certain height exist on the boss after countersinking, so that a suddenly-changed edge of a countersunk hole caused by countersinking is avoided, stress concentration degree at the position of countersinking can be lowered, fatigue life can be prolonged, and the problem that the position is prone to fatigue fracture is solved.
Description
Technical field
The utility model relates to the flange field, mainly is a kind of flange mounting hole boss structure.
Background technique
Structure behind domestic each end face tooth flanged yoke mounting hole place spot-facing generally is that spot-facing sinks several millimeters at present; Through turning round tired stand test checking and Market Feedback, region of stress concentration is counterbore edge behind the spot-facing, and counterbore edge phase commute generation fatigue fracture behind the spot-facing exists stress to concentrate herein, belongs to the fatigue crack source.
The model utility content
The purpose of this utility model is to overcome the deficiency that prior art exists, and provides a kind of flange mounting hole boss structure, the problem that the spot-facing edge stress is concentrated behind the solution mounting hole spot-facing.
The purpose of this utility model is finished by following technical solution, this flange mounting hole boss structure, comprise flanged yoke, place, flange entry position at flanged yoke is provided with boss, boss is provided with the flange entry, and there is the projection of certain altitude on the plane at the upper surface of flange entry and place, flange entry position.
The beneficial effects of the utility model are: mounting hole place blank is done a boss, also there is the projection of certain altitude in the spot-facing rear boss, the counterbore sudden change edge that does not so just exist spot-facing to cause, can reduce stress concentration degree herein, improve fatigue life, solve the problem that fatigue fracture easily takes place herein.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Label in the accompanying drawing is respectively: flange entry 1, boss 2, flanged yoke 3.
Embodiment
Below in conjunction with accompanying drawing the utility model is done detailed introduction:
As shown in Figure 1, this flange mounting hole boss structure comprises flanged yoke 3, is provided with boss 2 at the place, flange entry position of flanged yoke 3, boss 2 is provided with flange entry 1, and there is the projection of certain altitude on the plane at the upper surface of flange entry 1 and place, flange entry position.Also have the projection of certain altitude behind the spot-facing, form a boss structure, reduce stress with this and concentrate, the sharp edges that does not exist counterbore to cause behind the spot-facing, stress greatly reduces herein.
Two kinds of structures of the old and new contrast through cae analysis, and it is little more than 30% that the old structure spot-facing of new structure spot-facing place stress ratio place stress is wanted; Behind the original structure spot-facing wedge angle is arranged, cae analysis stress herein is bigger.Do not have wedge angle behind the structure spot-facing of this patent, rounding off, cae analysis stress herein diminish.
The utility model is not limited to above-mentioned mode of execution; no matter do any variation in its shape or material formation; every employing structural design provided by the utility model all is a kind of distortion of the present utility model, all should think within the utility model protection domain.
Claims (1)
1. flange mounting hole boss structure, comprise flanged yoke (3), it is characterized in that: the place, flange entry position at flanged yoke (3) is provided with boss (2), boss (2) is provided with flange entry (1), and there is the projection of certain altitude on the plane at the upper surface of flange entry (1) and place, flange entry position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320065888 CN203161859U (en) | 2013-02-01 | 2013-02-01 | Flange mounting hole boss structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320065888 CN203161859U (en) | 2013-02-01 | 2013-02-01 | Flange mounting hole boss structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161859U true CN203161859U (en) | 2013-08-28 |
Family
ID=49023045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320065888 Expired - Fee Related CN203161859U (en) | 2013-02-01 | 2013-02-01 | Flange mounting hole boss structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161859U (en) |
-
2013
- 2013-02-01 CN CN 201320065888 patent/CN203161859U/en not_active Expired - Fee Related
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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: 20130828 Termination date: 20190201 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |