CN104210652B - A kind of attachment structure of undercarriage - Google Patents
A kind of attachment structure of undercarriage Download PDFInfo
- Publication number
- CN104210652B CN104210652B CN201410425019.0A CN201410425019A CN104210652B CN 104210652 B CN104210652 B CN 104210652B CN 201410425019 A CN201410425019 A CN 201410425019A CN 104210652 B CN104210652 B CN 104210652B
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- Prior art keywords
- split bushing
- taper
- endoporus
- undercarriage
- hole
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- 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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- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
- General Details Of Gearings (AREA)
Abstract
A kind of attachment structure of undercarriage, belong to helicopter landing gear designing technique, it is characterized in that, including the first bolt, packing ring, check ring, ring flange, split bushing, taper bush and stud, circular inner hole is provided with the middle of ring flange, both sides have a through hole, and endoporus inwardly has a projection, for fixing split bushing；Split bushing endoporus is taper, and one end outer is provided with annular groove, for installing check ring and ring flange；Taper bush outer surface is taper, and endoporus is screwed hole, and a screwed hole is opened for installing Luo in outer surface.Beneficial effects of the present invention：The frame connecting structure that rises and falls belongs to circular conical surface interference connection, it is that displacement compression fit obtains interference combination to axial using external member and internal member, its axial displacement and compression are bolted to realize, because the pressing of circular conical surface interference connection is apart from short, it is easy to loading and unloading, and matching surface is difficult to be scratched during handling, can repeatedly assemble and disassemble.
Description
Technical field
The invention belongs to undercarriage technology, it is related to a kind of attachment structure.
Background technology
Helicopter mast formula undercarriage belongs to axle and is connected with axle with airframe structure installation, and bindiny mechanism needs can buffering branch
Column load is delivered on airframe structure.Undercarriage connection member is power transmission key component.Undercarriage needs being dismounted for multiple times when safeguarding.
Common interference connection is general using method or temperature differential method press-in assembling is pressed directly at normal temperatures, and normal temperature is pressed directly into the letter of method technique
It is single, but because in assembling process matching surface be scratched, thus reduce the magnitude of interference, reduce bonding strength, should not repeatedly tear open
Dress；And though temperature differential method is without disadvantages mentioned above, its technique is more complicated, is made troubles to use, maintenance.
The content of the invention
The purpose of the present invention：
This attachment structure is connected for helicopter landing gear with the installation of airframe structure, can meet the quick of undercarriage and tear open
Unload, installation requirement；Matching surface is difficult to be scratched when dismounting, installation, being dismounted for multiple times；And energy can under shock and vibration load
By work.Solve the fast quick-detach of undercarriage, installation question.
Technical scheme：
A kind of attachment structure of undercarriage, it is characterised in that including the first bolt 1, packing ring 2, check ring 5, ring flange
6th, split bushing 7, taper bush 8 and stud 9, are provided with circular inner hole in the middle of ring flange 6, both sides have a through hole, interior
Inwardly there is a projection in hole, for fixing split bushing 7；The endoporus of split bushing 7 is taper, and one end outer is provided with annular groove,
For installing check ring 5 and ring flange 6；The outer surface of taper bush 8 is taper, and endoporus is screwed hole, and a screw thread is opened in outer surface
Hole is used to install stud 9；
Taper bush 8 is fixedly connected by the screwed hole of its outer surface with stud 9, and taper bush 8 is inserted in split bushing 7,
The breach of split bushing 7 is snapped in by stud 9, the axial rotation of split bushing 7 and taper bush 8 in installation process, method is prevented
Blue disk 6, check ring 5 are sequentially loaded into the annular groove part of split bushing 7, and the first bolt 1 passes sequentially through packing ring 2, spring catch
The endoporus and taper bush 8 of circle 5, ring flange 6 and taper bush 8 are fastenedly connected；Ring flange 6 is bolted in structural member
On.
Beneficial effects of the present invention：
The frame connecting structure that rises and falls belongs to circular conical surface interference connection, is to utilize external member and internal member displacement pressure to axial
It is closely assembled to obtain interference combination, its axial displacement and compression are bolted to realize, due to circular conical surface interference connection
Pressing apart from short, it is easy to loading and unloading, and handling when matching surface be difficult to be scratched, can repeatedly assemble and disassemble.
Brief description of the drawings
Fig. 1 is a kind of overall installation figure of the invention
Fig. 2 is the sectional view of the upper and lower clamp assemblies of the invention
Specific embodiment
The present invention is described in further details below in conjunction with the accompanying drawings：Undercarriage is placed on installation site, rotation is risen and fallen
Frame is aligned up to the hole on the hole and damper leg outer barrel in the lower contact that main body mechanism is connected with undercarriage, solid with technique lock pin
It is fixed, stud 9 is installed in the screwed hole of the outer surface of taper bush 8, then taper bush 8 is arranged on split bushing 7, stud
In 9 breaches for snapping in split bushing 7, ring flange 6, check ring 5 are arranged on split bushing 7 successively, remove technique lock pin
Split bushing 7 is installed, the breach of the split bushing 7 in expansion pin assemblies is protected with HM109 fluid sealants, the first bolt 1 is installed and is twisted
It is tight and apply certain torque, the second bolt 4 is installed.
Embodiment：
A kind of attachment structure of undercarriage, including the first bolt 1, packing ring 2, check ring 5, ring flange 6, split bushing 7,
Taper bush 8 and stud 9, are provided with circular inner hole in the middle of ring flange 6, both sides have a through hole, and endoporus inwardly has one convex
Rise, for fixing split bushing 7；The endoporus of split bushing 7 is taper, and one end outer is provided with annular groove, for installing spring
Back-up ring 5 and ring flange 6；The outer surface of taper bush 8 is taper, and endoporus is screwed hole, and a screwed hole is opened for installing spiral shell in outer surface
Stake 9；
Undercarriage is placed on installation site, undercarriage is rotated up in the lower contact that main body mechanism is connected with undercarriage
Hole alignment on hole and damper leg outer barrel, is fixed with technique lock pin, installs screwed hole of the stud 9 in the outer surface of taper bush 8
It is interior, then by taper bush 8 be arranged on split bushing 7 on, stud 9 is snapped in the breach of split bushing 7, successively by ring flange 6,
Check ring 5 is arranged on split bushing 7, is removed technique lock pin and is installed split bushing 7, the split bushing 7 in expansion pin assemblies
Breach with HM109 fluid sealants protect, install the first bolt 1 tighten and apply certain torque, install the second bolt 4.
The endoporus of the split bushing 7 is taper, and the outer surface of taper bush 8 is taper, using external member and internal member phase
Interference combination is obtained to axial displacement compression fit, its axial displacement and compression are bolted to realize, it is ensured that dress
Matching surface is difficult to be scratched when unloading, and can repeatedly assemble and disassemble.
The endoporus of the ring flange 6 inwardly has a projection, for fixing split bushing 7, it is ensured that split bushing 7 will not be along its axle
Line is rotated.
Claims (3)
1. a kind of attachment structure of undercarriage, it is characterised in that including the first bolt (1), packing ring (2), check ring (5), method
Circular inner hole is provided with the middle of blue disk (6), split bushing (7), taper bush (8) and stud (9), ring flange (6), both sides are opened respectively
There is a through hole, endoporus inwardly has a projection, for fixing split bushing (7)；Split bushing (7) endoporus is taper, one end
Outer is provided with annular groove, for installing check ring (5) and ring flange (6)；Taper bush (8) outer surface is taper, endoporus
It is screwed hole, a screwed hole is opened for installing stud (9) in outer surface；
Undercarriage is placed on installation site, rotate undercarriage until hole in the lower contact that is connected with undercarriage of main body mechanism and
Hole alignment on damper leg outer barrel, is fixed with technique lock pin, installs screwed hole of the stud (9) in taper bush (8) outer surface
Interior, then by taper bush (8) on split bushing (7), stud (9) is snapped in the breach of split bushing (7), successively will
Ring flange (6), check ring (5) remove technique lock pin and install split bushing (7) on split bushing (7), expand pin bank
The breach of the split bushing (7) in part is protected with HM109 fluid sealants, is installed the first bolt (1) and is tightened and apply certain torque, is pacified
Fill the second bolt (4).
2. a kind of attachment structure of undercarriage according to claim 1, it is characterised in that split bushing (7) endoporus
It is taper, taper bush (8) outer surface is taper, using external member and internal member, displacement compression fit is obtained to axial
Interference combination, its axial displacement and compression are bolted to realize, it is ensured that matching surface is difficult to be scratched during handling, can be many
Secondary assembly and disassembly.
3. the attachment structure of a kind of undercarriage according to claim 1, it is characterised in that ring flange (6) endoporus to
Inside there is a projection, for fixing split bushing (7), it is ensured that split bushing (7) will not be rotated along its axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425019.0A CN104210652B (en) | 2014-08-26 | 2014-08-26 | A kind of attachment structure of undercarriage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425019.0A CN104210652B (en) | 2014-08-26 | 2014-08-26 | A kind of attachment structure of undercarriage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104210652A CN104210652A (en) | 2014-12-17 |
| CN104210652B true CN104210652B (en) | 2017-06-23 |
Family
ID=52092657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410425019.0A Active CN104210652B (en) | 2014-08-26 | 2014-08-26 | A kind of attachment structure of undercarriage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104210652B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205440853U (en) * | 2015-12-24 | 2016-08-10 | 广州亿航智能技术有限公司 | Unmanned aerial vehicle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4544116A (en) * | 1983-11-14 | 1985-10-01 | Shwayder Warren M | Helicopter landing skid shoe pad |
| CN103303472B (en) * | 2013-06-24 | 2015-06-10 | 中国科学院长春光学精密机械与物理研究所 | Free deflection lag-damping type nose landing gear of small unmanned air vehicle |
| CN203473239U (en) * | 2013-07-15 | 2014-03-12 | 中国民用航空飞行学院 | Mounting base for main landing gear of TB20 airplane |
| CN203738183U (en) * | 2014-06-13 | 2014-07-30 | 成都敏捷制造工程有限公司 | Device capable of achieving accurate positioning and clamping repeatedly |
-
2014
- 2014-08-26 CN CN201410425019.0A patent/CN104210652B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104210652A (en) | 2014-12-17 |
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