CN203488523U - Dual-self-locking fastening piece - Google Patents
Dual-self-locking fastening piece Download PDFInfo
- Publication number
- CN203488523U CN203488523U CN201320626898.4U CN201320626898U CN203488523U CN 203488523 U CN203488523 U CN 203488523U CN 201320626898 U CN201320626898 U CN 201320626898U CN 203488523 U CN203488523 U CN 203488523U
- Authority
- CN
- China
- Prior art keywords
- bolt
- locking
- self
- nut
- fastening piece
- 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 - Lifetime
Links
- 238000012856 packing Methods 0.000 claims description 17
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
Abstract
The utility model provides a dual-self-locking fastening piece provided with two independent locking devices. The fastening piece is composed of a bolt, a spring collar, a gasket, a nut and a cottor pin, wherein an annular groove is formed in the root of the bolt. The spring collar is embedded into the annular groove to form an elastic axial locking device, and the cottor pin forms a second locking device. The dual-self-locking fastening piece is mainly used in a flight control system of an aircraft, the spring collar can exit only under the condition that external force is large enough, and the bolt cannot fall off by itself even if an operator forgets to install the nut or the cottor pin.
Description
Technical field
The utility model relates to aircraft manufacturing technical field, particularly a kind of do not need special tool(s) installation and removal, can reusable two self-locking fasteners for Airplane Flight Control System '.
Background technique
In the key position of aircraft, only there is the fastening piece of single locking device can not meet reliability requirement.Such as the single fastening in main flight control system, its loss may cause forfeiture or the reduction of maneuvering capability; Joint connecting bolt on undercarriage, its loss may affect aircraft safety and land.By some aloft information, shown, the loss of these position fastening pieces repeatedly causes the catastrophic accident of aircraft.
In Domestic Aircraft flight control system, the connection of removable fasteners adopts bolt, nut, pad substantially at present, insurance forms adopts cotter pin form, cotter pin is unique locking safty device, and it because operator neglect, is omitted or cotter pin is lost, and can cause control failure.In order to meet the reliability requirement of aircraft, just must use the fastening piece with two cover locking safty device.Yet, the domestic enterprise that does not also have two self-locking fastener designs to produce and apply, this obtains airworthiness certificate to aircraft and has caused larger obstruction.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of pair of self-locking fastener, by bolt, check ring, packing ring, nut, cotter pin, formed, at bolt light rod root, process an annular groove, check ring is embedded in annular groove and forms elasticity axial locking, and packing ring is stepped ramp type packing ring, and spring washer is placed in the U-shaped groove of step packing ring, attaching nut outside step packing ring, cotter pin forms the second locking device through the nut and the bolt that coordinate.When bolt connects, check ring enters in bolt hole by the chamfering compression of institute's union piece, when check ring by and stretch out after bolt hole, automatic spreading, played stopping function, for being used in conjunction with check ring, by a step packing ring, be connected with institute union piece, outside attaching nut, finally plugs cotter pin and forms two self-locking structures.And because this pair of self-locking fastener is for flight control system, in this system, connecting bolt is mainly subject to shearing force, axial force is zero substantially.Check ring must just can exit having enough in large axial force situation, even if forget mounting nuts or open cotter pin, bolt can self falling yet.
The utility model has the advantage of and can significantly lower the rate of fault that fastening piece is lost, and this pair of self-locking fastener dismounting is simple, does not need special tool(s), cost is very low and can reuse.
Below in conjunction with specific embodiment accompanying drawing, this application is described in further detail.
Accompanying drawing explanation
The two self-locking fastener structural representations of Fig. 1
Number in the figure explanation: 1, bolt; 2, nut; 3, cotter pin; 4, step packing ring; 5, check ring; 6, part; 7, annular groove
Embodiment
According to two self-locking fasteners shown in Fig. 1, comprise bolt 1, the nut 2 matching with bolt 1, at bolt 1 polished rod root, can process an annular groove 7, check ring 5 is just embedded in the flexible axial locking of the interior formation of annular groove 7, the packing ring being used in conjunction with bolt 1 is stepped ramp type packing ring, spring washer 5 is placed in the U-shaped groove of step packing ring 4, step packing ring 4 outside attaching nuts 2, cotter pin forms the second locking device through the bolt 1 being connected and nut 2.
When using two self-locking fastener, firmly press bolt 1 head, check ring 5 is compressed, bolt 1 enters in bolt hole with the chamfering of check ring 5 by institute's union piece 6, until check ring 5, completely by automatic spreading after part 6, block part 6, bolt 1 is formed to locking position effect.Step packing ring 4 is inserted in to the outside of check ring 5, bolt 1 is stamped the double self locking effect that fastening piece has been played in cotter pin 3 after tightening by screw thread with nut 2.While decomposing dismounting, take off after cotter pin 3 and nut 2, firmly the threaded one end of bolt 1 is pressed in extruding, and check ring 5 is compressed, and bolt 1 exits part 6 with check ring 5.
The utility model has been realized the double self-locking function of fastening piece by cotter pin 3 and check ring 5, the situation of having avoided bolt 1 to lose or off normal due to the disengagement of nut 2, and this two covers locking device is to realize separately lock function, when wherein a set of because any reason is when inoperative, do not cause another set of inefficacy.
Claims (1)
1. a two self-locking fastener, by bolt, check ring, packing ring, nut, cotter pin, formed, it is characterized in that described bolt light rod root has an annular groove, described check ring is embedded in formation elasticity axial locking in annular groove, described packing ring is step packing ring, described spring flange is placed in the U-shaped groove of step packing ring, and step packing ring outside connects described nut, and described cotter pin forms the second locking device through the described bolts and nuts that match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320626898.4U CN203488523U (en) | 2013-10-11 | 2013-10-11 | Dual-self-locking fastening piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320626898.4U CN203488523U (en) | 2013-10-11 | 2013-10-11 | Dual-self-locking fastening piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203488523U true CN203488523U (en) | 2014-03-19 |
Family
ID=50259359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320626898.4U Expired - Lifetime CN203488523U (en) | 2013-10-11 | 2013-10-11 | Dual-self-locking fastening piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203488523U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477508A (en) * | 2016-07-19 | 2019-03-15 | 萧中民 | A kind of rotatable anchoring assembly |
| CN109707324A (en) * | 2019-01-30 | 2019-05-03 | 天津德华石油装备制造有限公司 | A kind of helicoid hydraulic motor anti-lost motor and helicoid hydraulic motor |
| CN113097945A (en) * | 2021-04-01 | 2021-07-09 | 河南金冠宇电力工程有限公司 | Cable bridge horizontal angle adjusting device and method for adjusting angle by using same |
-
2013
- 2013-10-11 CN CN201320626898.4U patent/CN203488523U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477508A (en) * | 2016-07-19 | 2019-03-15 | 萧中民 | A kind of rotatable anchoring assembly |
| CN109707324A (en) * | 2019-01-30 | 2019-05-03 | 天津德华石油装备制造有限公司 | A kind of helicoid hydraulic motor anti-lost motor and helicoid hydraulic motor |
| CN113097945A (en) * | 2021-04-01 | 2021-07-09 | 河南金冠宇电力工程有限公司 | Cable bridge horizontal angle adjusting device and method for adjusting angle by using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203488523U (en) | Dual-self-locking fastening piece | |
| EP1933046B1 (en) | Integrated captive fastener system and method of assembling same | |
| WO2018039947A1 (en) | Fastening connection assembly, fastening connection structure and rail structure | |
| CN205715164U (en) | Self-locking type check bolt assembly | |
| CN202926832U (en) | Fastener | |
| CN108119491A (en) | A kind of seperated auto-lock stop nut | |
| CN204284166U (en) | A kind of screw locking structure | |
| CN203067490U (en) | Locknut | |
| CN105889280A (en) | Non-disengagement fastening device and method | |
| CN105370773A (en) | Oil cylinder for railway vehicle brake clamp | |
| CN203812956U (en) | Anti-loose external storage battery combined terminal | |
| CN206092662U (en) | Elastic cone wedging formula locknut | |
| CN202926831U (en) | Locking structure of threaded connection pair | |
| CN205744835U (en) | A kind of anti-loose connector | |
| CN201723557U (en) | Riveted connecting screw component with lock ring | |
| CN206600343U (en) | Combination nut | |
| CN207033950U (en) | A kind of centering type anti-loosen screw nut component in flanged face | |
| CN205001355U (en) | Can prevent flange joint structure become flexible | |
| CN206175448U (en) | Nut fastener | |
| CN204253562U (en) | Two slot flange that cuts stops loose nut | |
| CN104454901A (en) | Novel looseness-preventive nut and connection method thereof | |
| CN201973046U (en) | Connecting structure for steel plate riveted nylon self-locking nuts | |
| CN205244089U (en) | A take protruding nut for snowmobile | |
| CN204186147U (en) | A kind of quick-detachable door locking handle assembly | |
| CN203488524U (en) | Nut |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 710089 in Shaanxi province Xi'an city Yanliang District West Avenue Patentee after: AVIC Xi'an Aircraft Industry Group Co.,Ltd. Address before: 1 No. 710089 Shaanxi province Xi'an city Yanliang District West Avenue Patentee before: AVIC AIRCRAFT Corp. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210618 Address after: 1 No. 710089 Shaanxi province Xi'an city Yanliang District West Avenue Patentee after: AVIC AIRCRAFT Corp. Address before: 1 No. 710089 Shaanxi province Xi'an city Yanliang District West Avenue Patentee before: XI'AN AIRCRAFT BRANCH OF XI'AN AIRCRAFT INTERNATIONAL Corp. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140319 |
|
| CX01 | Expiry of patent term |