CN110481762A - A kind of structure improving brake distributor reliability - Google Patents
A kind of structure improving brake distributor reliability Download PDFInfo
- Publication number
- CN110481762A CN110481762A CN201910711171.8A CN201910711171A CN110481762A CN 110481762 A CN110481762 A CN 110481762A CN 201910711171 A CN201910711171 A CN 201910711171A CN 110481762 A CN110481762 A CN 110481762A
- Authority
- CN
- China
- Prior art keywords
- mandril
- dirt
- proof boot
- brake distributor
- improving brake
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 229920002457 flexible plastic Polymers 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 7
- 239000004744 fabric Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface
- B64C25/42—Arrangement or adaptation of brakes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of structure for improving brake distributor reliability, including mandril, fabrication hole is offered in the middle part of mandril, it is plane that mandril, which opens up process hole position two sides,.By structure upper ejector pin Curve guide impeller, the process hole position on mandril is designed as to two sides facing cut is flat, and loaded area increases, optimizes loaded area, the pressure that can be carried improves 2.7 times, and maximal bending moment improves 2 times, effectively improves mandril intensity and bending resistance.
Description
Technical field
The invention belongs to cold air brake system fields, are related to a kind of structure for improving brake distributor reliability.
Background technique
The distributor that brakes is applied to aircraft cold air brake system, and according to different manipulations, brake left and right two chamber of distributor
Air pressure is equal or different, to generate identical torque or different torque, two chambers generate different torques to control aircraft on ground
Face turning, improves the reliability of product, more preferably meets aircraft utilization requirement.The push rod structure that existing brake distributor uses determines
The part is easy fracture part, need to from Structure Improvement Design.If product by the impact of non-normal use or is installed not because of mandril
Coordinate and foreign matter falls into piston and mandril is caused to be broken, product loses brake function, will affect aircraft taxi turning and safety of landing.
Summary of the invention
Goal of the invention
To solve the above problems, increasing brake point the present invention provides a kind of structure for improving brake distributor reliability
The intensity and bending resistance of cloth device mandril improve the design remaining of mandril, reduce mandril failure probability, to improve brake point
Cloth device reliability meets aircraft utilization requirement, and it is safe to guarantee that army uses.
Inventive technique solution
In order to achieve the above-mentioned object of the invention, the present invention uses following technical solutions:
A kind of structure improving brake distributor reliability, including mandril, mandril middle part offer fabrication hole, and mandril opens up
Process hole position two sides are plane.
Preferably, mandril top is threaded with nut, hex nut, and ejector rod bottom end is ball shape structure, the installation of shell
Piston is provided in hole, there are gaps between piston and shell bores inner wall；Setting tip-lever support and adjustment nut, top in piston
The ball shape structure and tip-lever support of bar bottom end cooperate；Adjustment nut is set to mandril lower part, and the locked adjustment nut of punching point guarantees adjustment
Gap between nut bottom surface and the intersecting lens of ball shape structure and mandril is not more than 0.1mm.
Preferably, dirt-proof boot is installed in shell bores, dirt-proof boot is set to above piston, and mandril passes through dirt-proof boot,
There is gap between mandril and dirt-proof boot.
Preferably, gap is 0.05mm~0.1mm between mandril and dirt-proof boot.
Preferably, shell bores inner wall offers annular groove, and the outer eaves card of dirt-proof boot is in a ring groove.
Preferably, it is tapered protrusion in the middle part of dirt-proof boot top surface, has bellmouth at dirt-proof boot and mandril cooperation.
Preferably, dirt-proof boot is made of soft nonmetallic materials.
Preferably, dirt-proof boot is made of flexible plastic or rubber.
Preferably, mandril opens up process hole position two sides plan range not less than 3mm.
Preferably, piston and shell bores inner wall gap are 0.02mm~0.08mm.
Advantages of the present invention
The present invention has the advantages that
(1) by structure upper ejector pin Curve guide impeller, the process hole position on mandril is designed as two sides facing cut flat, carrying
Area increases, and optimizes loaded area, and the pressure that can be carried improves 2.7 times, and maximal bending moment improves 2 times, effectively improves mandril intensity
And bending resistance.
(2) there are certain intervals between shell and piston, if there is foreign matter to fall into piston, increase and rub between shell and piston
It wipes, mandril is easily caused to be broken by excessive moment of flexure, by rationally designing dustband, foreign matter is effectively prevent to fall into piston.
By the above Curve guide impeller, the design remaining of mandril is improved, mandril failure probability is reduced, improves brake distribution
The reliability of device.
Detailed description of the invention
Fig. 1 is a kind of structure chart of the structure of raising brake distributor reliability of the invention.
In figure: 1- nut, 2- control stick, 3- stop washer, 4- hex nut, 5- mandril, 6- shell, 7- tip-lever support, 8-
Adjusting nut, 9- piston, 10- dirt-proof boot.
Specific embodiment
In conjunction with summary of the invention general introduction and attached drawing, the specific embodiment that the present invention will be described in detail.
A kind of structure improving brake distributor reliability, including mandril 5 offer fabrication hole, mandril 5 in the middle part of mandril 5
It is plane with fabrication hole intersection, two planes are parallel, and when two sides plan range is not less than 3mm, loaded area is optimal, mandril
Intensity and bending resistance are most strong, while being more conducive to assemble.By 5 Curve guide impeller of structure upper ejector pin, the fabrication hole on mandril 5 is set
It is calculated as two sides and is designed as plane, 5 loaded area of mandril increases, and optimizes loaded area, and the pressure that can be carried improves 2.7 times, most
Big moment of flexure improves 2 times, effectively improves 5 intensity of mandril and bending resistance.
5 top of mandril is threaded with nut 1, hex nut 4, is provided with stop washer between nut 1, hex nut 4
3.5 bottom end of mandril is ball shape structure, is provided with piston 9 in the mounting hole of shell 6, deposits between 6 inner wall of the hole installing of piston 9 and shell
In gap, gap is controlled within 0.02mm~0.08mm；Setting tip-lever support 7 and adjustment nut 8,5 bottom end of mandril in piston 9
Ball shape structure and tip-lever support 7 cooperate；Adjustment nut 8 is set to 5 lower part of mandril, and the locked adjustment nut 8 of punching point guarantees adjustment spiral shell
Gap between 8 bottom surface of cap and ball shape structure and the intersecting lens of mandril 5 is not more than 0.1mm.It is clamped on mandril 5 with assembly tool
It is locked to twist hex nut 4 for plane.
6 inner wall of the hole installing of shell offers annular groove, and the outer eaves card of dirt-proof boot 10 is in a ring groove.Dirt-proof boot 10 is set to work
9 top of plug, mandril 5 pass through dirt-proof boot 10, there is the gap 0.05mm~0.1mm between mandril 5 and dirt-proof boot 10.Dirt-proof boot 10 uses
Soft nonmetallic materials are made, such as flexible plastic or rubber.Be tapered protrusion in the middle part of 10 top surface of dirt-proof boot, increase dirt-proof boot 10 with
Guiding length between mandril 5, to keep 10 stability of dirt-proof boot more preferable, and at 10 upper and lower end of dirt-proof boot and 5 cooperation of mandril
Respectively there is a bellmouth, it is more effective dust-proof.Because there are certain intervals between shell 6 and piston 9, if there is foreign matter to fall into piston, increase
It rubs between big shell 6 and piston 9, mandril 5 is easily caused to be broken by excessive moment of flexure, by rationally designing dustband 10, have
Effect prevents foreign matter from falling into piston.By the above Curve guide impeller, the design remaining of mandril 5 is improved, reduces the failure probability of mandril 5,
Improve the reliability of brake distributor.
Claims (10)
1. a kind of structure for improving brake distributor reliability, including mandril (5), mandril (5) middle part offers fabrication hole, special
Sign is: it is plane that mandril (5), which opens up process hole position two sides,.
2. a kind of structure for improving brake distributor reliability as described in claim 1, it is characterised in that: mandril (5) top
It is threaded with nut (1), hex nut (4), mandril (5) bottom end is ball shape structure, is provided with work in the mounting hole of shell (6)
It fills in (9), there are gaps between piston (9) and shell (6) inner wall of the hole installing；Setting tip-lever support (7) and adjustment nut in piston (9)
(8), the ball shape structure of mandril (5) bottom end and tip-lever support (7) cooperate；Adjustment nut (8) is set to mandril (5) lower part, punching point lock
Dead adjustment nut (8) guarantees that the gap between adjustment nut (8) bottom surface and ball shape structure and the intersecting lens of mandril is not more than
0.1mm。
3. a kind of structure for improving brake distributor reliability as claimed in claim 2, it is characterised in that: shell (6) installation
It is equipped in hole dirt-proof boot (10), dirt-proof boot (10) is set to above piston (9), and mandril (5) passes through dirt-proof boot (10), mandril
(5) there is gap between dirt-proof boot (10).
4. a kind of structure for improving brake distributor reliability as claimed in claim 3, it is characterised in that: mandril (5) and anti-
Gap is 0.05mm~0.1mm between dirt set (10).
5. a kind of structure for improving brake distributor reliability as claimed in claim 3, it is characterised in that: shell (6) installation
Hole inner wall offers annular groove, and the outer eaves card of dirt-proof boot (10) is in a ring groove.
6. a kind of structure for improving brake distributor reliability as claimed in claim 3, it is characterised in that: dirt-proof boot (10) top
Middle face is tapered protrusion, has bellmouth at dirt-proof boot (10) and mandril (5) cooperation.
7. a kind of structure for improving brake distributor reliability as claimed in claim 3, it is characterised in that: dirt-proof boot (10) is adopted
It is made of soft nonmetallic materials.
8. a kind of structure for improving brake distributor reliability as claimed in claim 7, it is characterised in that: dirt-proof boot (10) is adopted
It is made of flexible plastic or rubber.
9. a kind of structure for improving brake distributor reliability as described in claim 1, it is characterised in that: mandril (5) opens up
Process hole position two sides plan range is not less than 3mm.
10. a kind of structure for improving brake distributor reliability as claimed in claim 2, it is characterised in that: piston (9) and shell
Body (6) inner wall of the hole installing gap is 0.02mm~0.08mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910711171.8A CN110481762B (en) | 2019-08-02 | Structure for improving reliability of brake distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910711171.8A CN110481762B (en) | 2019-08-02 | Structure for improving reliability of brake distributor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110481762A true CN110481762A (en) | 2019-11-22 |
| CN110481762B CN110481762B (en) | 2024-07-05 |
Family
ID=
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB205520A (en) * | 1923-10-16 | 1924-07-17 | Dobrivoje Bozic | A distributor for fluid-pressure brakes |
| GB1205294A (en) * | 1967-08-30 | 1970-09-16 | Autobrzdy Jablonec Narodni Pod | Improvements in or relating to brake force regulators |
| FR2918637A1 (en) * | 2007-07-09 | 2009-01-16 | Airbus France Sas | Braking energies balancing system for aircraft, has unit for balancing energies applied on gears during landing or aborted take-off phase of aircraft, and including calculator calculating delay according to mass and centering of aircraft |
| CN202493519U (en) * | 2012-01-20 | 2012-10-17 | 张厚美 | Anti-corrosive closed brake cylinder |
| CN202541758U (en) * | 2012-02-22 | 2012-11-21 | 隆鑫通用动力股份有限公司 | Motorcycle braking device and motorcycle comprising the same |
| CN106800087A (en) * | 2015-11-26 | 2017-06-06 | 中国直升机设计研究所 | A kind of manned wheel braking controller for helicopter |
| CN211139656U (en) * | 2019-08-02 | 2020-07-31 | 贵州新安航空机械有限责任公司 | Structure for improving reliability of brake distributor |
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB205520A (en) * | 1923-10-16 | 1924-07-17 | Dobrivoje Bozic | A distributor for fluid-pressure brakes |
| GB1205294A (en) * | 1967-08-30 | 1970-09-16 | Autobrzdy Jablonec Narodni Pod | Improvements in or relating to brake force regulators |
| FR2918637A1 (en) * | 2007-07-09 | 2009-01-16 | Airbus France Sas | Braking energies balancing system for aircraft, has unit for balancing energies applied on gears during landing or aborted take-off phase of aircraft, and including calculator calculating delay according to mass and centering of aircraft |
| CN202493519U (en) * | 2012-01-20 | 2012-10-17 | 张厚美 | Anti-corrosive closed brake cylinder |
| CN202541758U (en) * | 2012-02-22 | 2012-11-21 | 隆鑫通用动力股份有限公司 | Motorcycle braking device and motorcycle comprising the same |
| CN106800087A (en) * | 2015-11-26 | 2017-06-06 | 中国直升机设计研究所 | A kind of manned wheel braking controller for helicopter |
| CN211139656U (en) * | 2019-08-02 | 2020-07-31 | 贵州新安航空机械有限责任公司 | Structure for improving reliability of brake distributor |
Non-Patent Citations (1)
| Title |
|---|
| 罗裕富;: "赛斯纳172R型飞机刹车作动筒活塞杆断裂失效分析", 航空维修与工程, no. 09, 20 September 2018 (2018-09-20), pages 72 - 75 * |
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