CN207549864U - A kind of encapsulated half snap ring - Google Patents
A kind of encapsulated half snap ring Download PDFInfo
- Publication number
- CN207549864U CN207549864U CN201721558226.9U CN201721558226U CN207549864U CN 207549864 U CN207549864 U CN 207549864U CN 201721558226 U CN201721558226 U CN 201721558226U CN 207549864 U CN207549864 U CN 207549864U
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- China
- Prior art keywords
- snap ring
- half snap
- encapsulated
- wheel hub
- surface layer
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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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Abstract
A kind of encapsulated half snap ring, is made of half snap ring and the rubber glue surface layer being coated in half snap ring mating surface, and rubber glue surface layer is adhesively fixed on using sulfuration process on half snap ring and wheel hub, the matched mating surface of movable wheel rim.The elastic rubber that compression glue surface layer generates after assembling makes snap ring annulus head tightly be stuck in the groove in wheel hub outer circle Nei positioning without axial activity clearance, even if there is small play, the buffering of sticky surface layer, metal to metal contact impact is avoided, can effectively solve half snap ring contact fine motion abrasion damage problem.
Description
Technical field
The present invention particularly discloses a kind of Inspection Aircraft Wheels activity wheel rim and fixes encapsulated snap ring, belongs to Inspection Aircraft Wheels castor
Edge technique for fixing range.
Background technology
Movable wheel rim is one of tubeless Inspection Aircraft Wheels structural member, it is mounted on lateral ends on wheel hub, is limited by snap ring
Position, so as to which tire is reliably retained on wheel.Snap ring is typically to be made of a half and half clasp.Two and half snap rings are complete phases
With, Aluminium Alloys in Common Use forging is machined into circular part and is radially divided into two what cutting was opened again.In half snap ring
Two ring ends are additionally provided with screw hole, when tire, movable wheel rim, the assembling of half snap ring in place after, by auricle, screw and fuse,
By two and half snap ring lockings on wheel hub, so as not to flat half snap ring of tire of tire from wheel hub annular groove hauling-out fly movable wheel rim and
Tire leads to aircraft accident.The section of half snap ring is a cup head and a supporting leg, and cup head is caught in the snap ring on wheel hub
Slot, what supporting leg connected with cup head, which face directly, leans against on hub outside diameter, and the inclined-plane that supporting leg is connect with cup head is supported by outside movable wheel rim
Side endoporus scarf.Half snap ring is clamped between movable wheel rim and wheel hub, and half snap ring one side coordinates or is bonded, one with movable wheel rim
Face coordinates or is bonded with wheel hub.I to product using, experiment carry out the study found that since tire is taking off landing mission
Middle load variations, half snap ring are not stationary, but have small axial shaking (play) therewith, thus in contact site
Fretting damage (abrasion) is caused in position, this is that wheel hub annular groove and movable wheel rim and half snap ring is caused to occur fatigue too early in itself
An important factor for crackle, this is the shortcomings of the prior art, needs to arouse attention and be improved.
United States Patent (USP) 2856980 discloses a kind of structure of inclined-plane snap ring support activity wheel rim, prevents snap ring from deviating from, snap ring
About 30 ° of outer surface chamfer, castor marginal pore mouth has respective chamfered corners.The open snap ring round end side of United States Patent (USP) 5086821 and wheel hub
Snap ring groove sidewall is bonded for inclined-plane, and the angle of chamfer is 45 ± 20 °, and wheel hub annular groove is worn with reducing.United States Patent (USP) 5259430
Inclined-plane snap ring support activity wheel rim is announced, increases coupling mechanism force using voussoir connection principle, aluminum alloy materials oblique angle is 15-25 °, is prevented
Only and eliminate snap ring abjection and wear.The annular groove and corresponding snap ring of the open compound radius connection of United States Patent (USP) 6550510
Shape to reduce stress spike, improves the hub fatigue service life.
Chinese patent 201520763584.8 discloses the movable wheel rim and snap ring inclined-plane that a kind of wheel structure is different tolerances
Support, oblique angle take negative value for the oblique angle tolerance 5-30 ' of 30-60 ° of movable wheel rim, and snap ring oblique angle tolerance 5-30 ' takes positive value, thereby makes
Point of force application raising is supported, tire pressure acting force arm reduces, and burst pressure is born to improve wheel rim.
It makes a general survey of these public technologies and is directed to movable wheel rim snap ring and fix, but without reference to also uncomfortable even if being related to individually
Movable wheel rim snap ring contact fine motion abrasion damage problem should or cannot be solved.
Invention content
To overcome the shortcomings of abrasion exists in the prior art, the present invention proposes a kind of encapsulated half snap ring.
Encapsulated half snap ring proposed by the present invention is made of half snap ring and the rubber glue surface layer being coated in half snap ring mating surface.
Rubber glue surface layer is adhesively fixed on using sulfuration process on half snap ring and wheel hub, the matched mating surface of movable wheel rim.Half snap ring
There is the annulus head of the semicircle shape radially swelled in one end of inner circumferential surface, and the annulus head is located at the interior table of half snap ring
Face；The radius of the annulus head is identical with the radius of the annular groove on circumference of hub surface.The arc-shaped surface of the annulus head is blocked with half
It smoothly transits and connects between ring inner periphery inner surface；And between the arc-shaped surface of the annulus head and half snap ring inner periphery inner surface
The knuckle radius of joint is 0.5~2mm.The outer surface of half snap ring is made of inclined-plane and plane, which is located at half and blocks
Ring has one end of annulus head, and is smoothly transitted and connected with cambered surface with the surface of the annulus head of the protuberance；The inclined-plane and aviation machine
Angle between wheel axis is 30 °~60 °.The rubber glue surface layer is coated on the annulus head surface of half snap ring, half card
On the inclined-plane of the outer surface of the inner surface of ring and half snap ring.
Encapsulated half snap ring cross section is approximate trapezoid or subtriangular, the approximate trapezoid or subtriangular base
It is made of semicircle arc segment and straightway.The semicircle camber line is connected at straight line intersection with connecting arc camber line, switching half
Diameter is 0.5~2mm, has respective chamfered corners at wheel hub groove port.
Half snap ring of encapsulated half snap ring is light alloy material.Glue surface layer thickness is 1~1.5mm, and sizing material is nitrile rubber.Packet
The outer surface chamfer of half snap ring of glue is 30 °~60 °, fillet surface cooperation identical at movable wheel rim inner orifice.Annulus head and wheel after assembling
Annular groove in the outer circle of hub outer end has the decrement of 0.5~1mm.
The present invention uses half snap ring oblique angle to increase coupling mechanism force, increase activity wheel rim stability, in order to avoid axially moved after stand under load
It is dynamic and tumble, especially heavy duty and during aircraft turn.One layer of rubber is coated in half snap ring mating surface, slows down fine motion shock, eliminates
Contact fine motion abrasion damage.
In the present invention, rubber glue surface layer is adhesively fixed on half snap ring and wheel hub, activity wheel rims using sulfuration process
In the mating surface of conjunction, the elastic rubber that compression glue surface layer generates after assembling makes snap ring annulus head tightly be stuck in the groove in wheel hub outer circle
Interior positioning is without axial movable clearance, even if there is small play, the buffering of sticky surface layer avoids metal to metal contact from hitting
It hits, can effectively solve half snap ring contact fine motion abrasion damage problem.It is supported using rational oblique angle, it can both guarantee activity wheel rim tires
Angled seat intensity, rigidity, but guarantee activity wheel rim fixing is reliable, it is big using glue surface layer frictional force, contact surface fixed force is also increased,
Help to be reduced or eliminated half snap ring contact fine motion abrasion damage problem in use.Therefore, the present invention is rational in infrastructure, easy to be easy
Row, improvement improves Inspection Aircraft Wheels fatigue strength, so as to improve service life, safety and the economic benefit of product is improved.
Description of the drawings
Attached drawing 1 is the cooperation schematic diagram of the present invention and Inspection Aircraft Wheels.
Attached drawing 2 is encapsulated half snap ring and Inspection Aircraft Wheels assembling office enlarged drawing.
Attached drawing 3 is the structure diagram of snap ring.
Attached drawing 4 is the structure diagram of encapsulated half snap ring.
Attached drawing 5 is 4 cross-sectional view of attached drawing.
Attached drawing 6 is the cross-sectional view of half snap ring；Wherein：The cross section approximate trapezoid of half snap ring in 6a, half snap ring in 6b
Cross section is subtriangular.
Attached drawing 7 is the structure diagram of inventive die.
Attached drawing 8 is the drawing in side sectional elevation of attached drawing 8.In figure：
1. half snap ring；2. glue surface layer；3. semicircle anchor ring；4. half inner cylinder face；5. half outer conical surface.6. wheel hub；7. activity
Wheel rim；8. snap ring.
Specific embodiment
The present embodiment is a kind of encapsulated snap ring of the Inspection Aircraft Wheels for aircraft main landing gear, by two and half snap rings 1 and packet
The glue surface layer 2 overlayed in fifty-fifty snap ring mating surface forms.The glue surface layer is to be adhesively fixed on rubber by sulfuration process
On half snap ring 1 and wheel hub and the matched mating surface of movable wheel rim.
There is the annulus head of the semicircle shape radially swelled in one end of half snap ring, 1 inner circumferential surface, and the annulus head is located at institute
State the inner surface of half snap ring；The radius of the annulus head is identical with the radius of the annular groove of 6 circumferential surface of wheel hub.The annulus head
It smoothly transits and connects between arc-shaped surface and half snap ring inner periphery inner surface；And in the arc-shaped surface of the annulus head and half snap ring
The knuckle radius of joint is 0.5~2mm between circumferential inner surface.
The outer surface of half snap ring is made of inclined-plane and plane, which is located at one end that half snap ring has annulus head, and
It is smoothly transitted and connected with cambered surface with the surface of the annulus head of the protuberance；Angle between the inclined-plane and Inspection Aircraft Wheels axis is
30 °~60 °.
It is coated on the inner surface of annulus head surface, half snap ring in half snap ring and the inclined-plane of the outer surface of half snap ring
There is the glue surface layer 2 of rubber, form encapsulated half snap ring.
The annulus head of encapsulated half snap ring and the inner surface of encapsulated half snap ring are to be in contact with 6 external peripheral surface of wheel hub
Mating surface；The inclined-plane of encapsulated half snap ring is the mating surface being in contact with movable wheel rim inner surface.
The encapsulated half snap ring annulus head is inlaid in the groove on the excircle of wheel hub outer end, and in the outer circle of wheel hub outer end
Groove surface coordinates；Encapsulated half snap ring inner surface coordinates with wheel hub outer end external peripheral surface.The inclined-plane of encapsulated half collar outer surface with
The inclined-plane cooperation that chamfering at movable wheel rim bore orifice is formed.
There is screw hole 3 in encapsulated half snap ring, two ends, when the tire, movable wheel rim, encapsulated half snap ring are assembled to
Behind position, by auricle, screw and fuse, by two encapsulated half snap ring lockings on wheel hub, partly block in order to avoid the flat tire of tire is encapsulated
Ring abjection flies movable wheel rim and tire.
Encapsulated half snap ring cross section is approximate trapezoid or subtriangular, the approximate trapezoid or subtriangular base
Inner circumferential surface for encapsulated half snap ring.In the present embodiment, the cross section approximate trapezoid of encapsulated half snap ring.
Half snap ring 1 in encapsulated half snap ring is light alloy material.Glue surface layer thickness is 1~1.5mm, and sizing material is butyronitrile rubber
Glue is fixedly arranged at by sulfidization molding on half snap ring 1.Annular groove after assembling in annulus head and wheel hub outer end outer circle has 0.5~
The decrement of 1mm.
Two encapsulated half snap rings are combined as the snap ring of a circular ring shape.
When carrying out encapsulated to half snap ring 1, sizing material and half snap ring are first got out, the film of back mixing is put into preheating
Mold cavity puts half snap ring, then the placed film on half snap ring on film, covers upper mold, press cure.Sulfuration process
Parameter：Nitrile rubber, molding curing parameter are：145-165 DEG C of temperature, time 25-40min, pressure 6-10MPa.
The present embodiment sizing material is 5180 nitrile rubbers, and molding curing parameter is：153 DEG C, time 25min of temperature, pressure
8MPa.Half snap ring is aluminium alloy, and 3~5 μ brass of electroplating thickness is carried out before vulcanizing, then to the processing of surface blast.Blast technique is joined
Number：Sand grains a diameter of 0.2-0.5mm, wind pressure 0.3-0.8MPa.JQ-1 glues are applied two times to adhesive surface, painting brushes one times, Tu Hou
20-30min is dried, baking oven is put into 90-120 DEG C of dry 20-30min, then apply second time, 20-30min is dried after painting, is put into
Baking oven is in 90-120 DEG C of dry 20-30min.
The present embodiment is used for the Inspection Aircraft Wheels of aircraft main landing gear.The Inspection Aircraft Wheels include wheel hub 6, movable wheel rim 7,
Snap ring 8 and bearing.Wheel hub 6 is a kind of cylindrical member, and one end carries the fixed flange extended radially out；The other end has radially-inwardly
The disc of stretching, and cylinder outer round surface is provided with two circumferentially extending grooves, one of them is seal groove；Another
For annular groove, for installing the annulus head of snap ring 8.Movable wheel rim 7 is that an one end carries the cylinder of wheel rim extended radially out
Shape part in movable 7 outer end of wheel rim, that is, has at one end inner orifice of wheel rim and has chamfering, thus in movable 7 outer end endoporus of wheel rim
The conical surface is formed, and this conical surface is butt internal conical surface at mouthful.6 fixed flange of wheel hub, cylinder outer mold surface and movable wheel rim 7 it
Between the space that is formed, for assembling aviation pneumatic tyre without inner tube.After tire assembling, movable wheel rim is airtight with wheel hub mating surface
Property, ensured by the O shape sealing rings being mounted in wheel hub outer circumferential groove.The annulus head of the snap ring 8 is mounted on outside wheel hub outer end
In circumferential groove, pass through the fixation of the 8 realization activity wheel rim 7 of snap ring in 6 outer circle of wheel hub.
In the inner cavity that 6 cylinder of wheel hub and disc and hub portion are formed, for installing disc brake device.
Bearing is assemblied in 6 hub portion of wheel hub, for wheel is fixed on undercarriage wheel shaft.
Snap ring 8 includes a pair of encapsulated half snap ring, it is two identical parts.At two ring ends of encapsulated half snap ring
Equipped with screw hole.Snap ring 8 further includes snap ring locking device, it is made of auricle, screw and fuse.
It, will by auricle, screw and fuse after sealing ring, tire, movable wheel rim, encapsulated half snap ring assemble in place
Two encapsulated half snap ring lockings are on wheel hub, in case flat half snap ring of tire of tire detaches from the annular groove on wheel hub and flies castor
Edge and tire, lead to aircraft accident.
Claims (3)
1. a kind of encapsulated half snap ring, it is characterized in that, encapsulated half snap ring is by half snap ring and is coated in half snap ring mating surface
Rubber glue surface layer forms；Rubber glue surface layer is adhesively fixed on half snap ring using sulfuration process and wheel hub, movable wheel rim are matched
In mating surface；There is the annulus head of the semicircle shape radially swelled in one end of half snap ring inner circumferential surface, and the annulus head is located at institute
State the inner surface of half snap ring；The radius of the annulus head is identical with the radius of the annular groove on circumference of hub surface；The annulus head
It smoothly transits and connects between arc-shaped surface and half snap ring inner periphery inner surface；And in the arc-shaped surface of the annulus head and half snap ring
The knuckle radius of joint is 0.5~2mm between circumferential inner surface；The outer surface of half snap ring is made of inclined-plane and plane,
The inclined-plane, which is located at half snap ring, one end of annulus head, and is smoothly transitted and connected with cambered surface with the surface of the annulus head of the protuberance；
Angle between the inclined-plane and Inspection Aircraft Wheels axis is 30 °~60 °；The rubber glue surface layer is coated on the circle of half snap ring
On the inclined-plane of the outer surface on take capel surface, the inner surface of half snap ring and half snap ring.
2. encapsulated half snap ring as described in claim 1, it is characterized in that, encapsulated half snap ring cross section is approximate trapezoid or approximate triangle
Shape, the approximate trapezoid or subtriangular base are made of semicircle arc segment and straightway；The semicircle camber line and straight
Line intersection is connected with connecting arc camber line, and blend radius is 0.5~2mm, has respective chamfered corners at wheel hub groove port.
3. encapsulated half snap ring as described in claim 1, it is characterized in that, half snap ring of encapsulated half snap ring is light alloy material；Glue surface
Layer thickness is 1~1.5mm, and sizing material is nitrile rubber；The outer surface chamfer of encapsulated half snap ring is 30 °~60 °, with movable wheel rim inner orifice
Locate identical fillet surface cooperation；Annulus head has the decrement of 0.5~1mm with the annular groove in the outer circle of wheel hub outer end after assembling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721558226.9U CN207549864U (en) | 2017-11-21 | 2017-11-21 | A kind of encapsulated half snap ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721558226.9U CN207549864U (en) | 2017-11-21 | 2017-11-21 | A kind of encapsulated half snap ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207549864U true CN207549864U (en) | 2018-06-29 |
Family
ID=62679368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721558226.9U Expired - Fee Related CN207549864U (en) | 2017-11-21 | 2017-11-21 | A kind of encapsulated half snap ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207549864U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107757249A (en) * | 2017-11-21 | 2018-03-06 | 西安航空制动科技有限公司 | A kind of encapsulated snap ring and preparation method thereof |
| CN110154649A (en) * | 2019-06-24 | 2019-08-23 | 西安航空制动科技有限公司 | Antislip tubeless Inspection Aircraft Wheels |
| CN112297438A (en) * | 2020-07-28 | 2021-02-02 | 苏州大学 | Cylindrical plastic shell with built-in wide ribs and welding method thereof |
-
2017
- 2017-11-21 CN CN201721558226.9U patent/CN207549864U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107757249A (en) * | 2017-11-21 | 2018-03-06 | 西安航空制动科技有限公司 | A kind of encapsulated snap ring and preparation method thereof |
| CN110154649A (en) * | 2019-06-24 | 2019-08-23 | 西安航空制动科技有限公司 | Antislip tubeless Inspection Aircraft Wheels |
| CN112297438A (en) * | 2020-07-28 | 2021-02-02 | 苏州大学 | Cylindrical plastic shell with built-in wide ribs and welding method thereof |
| WO2022021763A1 (en) * | 2020-07-28 | 2022-02-03 | 苏州大学 | Cylindrical plastic housing with built-in wide rib and welding method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 Termination date: 20211121 |