CN204357870U - A kind of diameter adjusting mechanism for pivot pin - Google Patents
A kind of diameter adjusting mechanism for pivot pin Download PDFInfo
- Publication number
- CN204357870U CN204357870U CN201420649803.5U CN201420649803U CN204357870U CN 204357870 U CN204357870 U CN 204357870U CN 201420649803 U CN201420649803 U CN 201420649803U CN 204357870 U CN204357870 U CN 204357870U
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- lining
- pivot pin
- pad
- little
- nut
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Abstract
The utility model belongs to aircaft configuration link technical field, particularly relates to a kind of diameter adjusting mechanism for pivot pin.Comprise pivot pin 1, nut 2, pad 3, lining 4, wherein, lining 4 is coated at outside bearing pin 1, and lining 4 is made up of some little linings, adopts wedge surface to coordinate between little lining, nut 2 and pad 3 are arranged on pivot pin 1 side successively, making pad 3 compress lining 4 by rotating nut 2, can ensureing that the little lining of lining 4 is by moving axially, and produce radial expansion because wedge surface coordinates, thus indirectly change pivot pin 1 diameter, be convenient to dismounting.The structural type of this structure to aircraft pivot pin is improved, under the guarantee shearing resistance suitable with the solid pivot pin of same material and tensile strength index prerequisite, one group of lining is added at pivot pin outer surface, wedge surface is adopted to coordinate between lining with lining, along with compression and the release of lining and lining, can be there is radial change in pivot pin external diameter, to realize pivot pin circumference and hole closely cooperates.
Description
Technical field
The invention belongs to airframe linkage structure technical field, particularly relate to a kind of diameter adjusting mechanism for pivot pin.
Background technique
Former aircraft is in the quick mounting and unloading process of motor, seat, testing installation etc., and press fit or the taper pin of adopting connects more, and dismounting speed is slow, and housing construction is fragile.Along with improving constantly, in the urgent need to improving this Placement of requiring home-built aircraft reliability, maintenance.
Summary of the invention
Goal of the invention
The structural type of the present invention to aircraft pivot pin is improved, under the guarantee shearing resistance suitable with the solid pivot pin of same material and tensile strength index prerequisite, one group of lining is added at pivot pin outer surface, wedge surface is adopted to coordinate between lining with lining, along with compression and the release of lining and lining, radial change can be there is in pivot pin external diameter, to realize pivot pin circumference with hole closely cooperates, and zero tolerance connection.
Technological scheme
A kind of diameter adjusting mechanism for pivot pin, it is characterized in that, this structure comprises pivot pin 1, nut 2, pad 3, lining 4, wherein, lining 4 is coated at outside bearing pin 1, lining 4 is made up of some little linings, wedge surface is adopted to coordinate between little lining, nut 2 and pad 3 are arranged on pivot pin 1 side successively, making pad 3 compress lining 4 by rotating nut 2, can ensureing that the little lining of lining 4 is by moving axially, and produce radial expansion because wedge surface coordinates, thus indirectly change pivot pin 1 diameter, be convenient to dismounting.
Beneficial effect of the present invention
A) this structure is used for airframe quick connection position, can improve aircraft maintainability;
B) this structural type is simple, achieves the adjustable of pin diameter owing to adding one group of lining in pivot pin radial direction;
C) this structure can be used for the position that airplane engine, seat and airborne equipment etc. need quick-release to mount and dismount;
D) meet Project R&D demand, promote the technological progress of domestic air mail standard piece.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention, wherein, and pivot pin-1, nut-2, pad-3, lining-4.
Fig. 2 is scheme of installation of the present invention.
Embodiment
A kind of diameter adjusting mechanism for pivot pin, it is characterized in that, this structure comprises pivot pin 1, nut 2, pad 3, lining 4, wherein, lining 4 is coated at outside bearing pin 1, lining 4 is made up of some little linings, wedge surface is adopted to coordinate between little lining, nut 2 and pad 3 are arranged on pivot pin 1 side successively, making pad 3 compress lining 4 by rotating nut 2, can ensureing that the little lining of lining 4 is by moving axially, and produce radial expansion because wedge surface coordinates, thus indirectly change pivot pin 1 diameter, be convenient to dismounting.
The present invention can be applicable to the pivot pin of metric diameter 8mm, 10mm at present.The material that pivot pin uses presses AMS5643 or AMS5629 for stainless steel PH17-4 or 13-8, and the current manufacturability of excessive or too small diameter specifications is poor.Lining adopts stainless steel PH17-4 or 13-8 to press AMS5643 or AMS5629; Nut adopt standard thread and pivot pin with the use of, material is stainless steel; Gasket material stainless steel PH17-4/17-7, by AMS5643/AMS5528.
An example of the present invention is as follows: pivot pin head adopts outer-hexagonal structure, and setting tool is standard hex spanner; Lining is installed on pivot pin radial outside in groups, leaves gap, as shown in Figure 1 during payment between little lining; From pivot pin threaded end rotating nut compress gasket, force pad to promote lining and produce axial displacement, pivot pin generation radial variation after expanding, as shown in Figure 2.
Under normal working, pivot pin, due to the effect of expanded liner, forms zero tolerance fit or interference fit with mounting hole, ensure that the Security of connection, and meanwhile, disassembly process meets the maintenance requirement of housing construction easily.
Claims (1)
1. the diameter adjusting mechanism for pivot pin, it is characterized in that, comprise pivot pin (1), nut (2), pad (3), lining (4), wherein, lining (4) is coated at bearing pin (1) outward, lining (4) is made up of some little linings, wedge surface is adopted to coordinate between little lining, nut (2) and pad (3) are arranged on pivot pin (1) side successively, pad (3) is made to compress lining (4) by rotating nut (2), can ensure that the little lining of lining (4) is by moving axially, and produce radial expansion because wedge surface coordinates, thus indirectly change pivot pin (1) diameter, be convenient to dismounting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420649803.5U CN204357870U (en) | 2014-11-03 | 2014-11-03 | A kind of diameter adjusting mechanism for pivot pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420649803.5U CN204357870U (en) | 2014-11-03 | 2014-11-03 | A kind of diameter adjusting mechanism for pivot pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204357870U true CN204357870U (en) | 2015-05-27 |
Family
ID=53259343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420649803.5U Active CN204357870U (en) | 2014-11-03 | 2014-11-03 | A kind of diameter adjusting mechanism for pivot pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204357870U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331819A (en) * | 2018-02-13 | 2018-07-27 | 北京宇航系统工程研究所 | Adaptive reducing connector |
-
2014
- 2014-11-03 CN CN201420649803.5U patent/CN204357870U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331819A (en) * | 2018-02-13 | 2018-07-27 | 北京宇航系统工程研究所 | Adaptive reducing connector |
| CN108331819B (en) * | 2018-02-13 | 2021-12-31 | 北京宇航系统工程研究所 | Self-adaptive reducing connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |