CN104329553A - Stress-free lubricating passage structure - Google Patents
Stress-free lubricating passage structure Download PDFInfo
- Publication number
- CN104329553A CN104329553A CN201410569337.4A CN201410569337A CN104329553A CN 104329553 A CN104329553 A CN 104329553A CN 201410569337 A CN201410569337 A CN 201410569337A CN 104329553 A CN104329553 A CN 104329553A
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- lubrication
- lining
- axle
- seat
- center hole
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Abstract
The invention discloses a stress-free lubricating passage structure, which comprises a main bearing, a bushing and a base body, wherein the bushing is provided with a center hole, the base body is provided with a center hole, the main bearing is arranged in the center hole of the bushing and can rotate around the axial line of the main bearing, the bushing is arranged in the center hole of the base body and is in interference connection with the base body, a lubricating oil passage is arranged between the main bearing and the bushing, a lubricating ring is arranged on the main bearing shaft in an interference sleeving way, an oil injecting seat is arranged on the lubricating ring, an oil injecting nozzle is arranged on the oil injecting seat, and the oil injecting nozzle, the oil injecting seat, the lubricating ring and the lubricating oil passage are communicated to form an oil injecting passage. The stress-free lubricating passage structure has the advantages that the fatigue lifetime of a structural element is prolonged, and the installation and maintenance performance of the structural element is improved.
Description
Technical field
The present invention relates to aircraft landing gear structures design field, particularly relate to the unstressed lubrication channel structure of one of the important rotation portion of undercarriage.
Background technique
Undercarriage is the important component taken off, land, the inefficacy of each part or parts can cause the destruction of landing gear structure or the forfeiture of body function, therefore, the design of each component of the undercarriage fatigue that needs to consider that details is brought or cracks influence.For undercarriage joint, the Lubrication Design of especially important rotation portion, directly affects loading conditions and the mechanical property of main components.
The lubrication of undercarriage joint, not only contributes to corrosion protection, strengthens the usability of component, and dismounting joint when contributing to repairing, and brings convenience to the installation of equipment, maintenance.As Figure 1-3, traditional lubrication channel design is generally threaded type (Fig. 1), elastic conjunction type (Fig. 2), mandrel lubrication assistant type (Fig. 3).In Fig. 1, directly threaded screw thread on matrix, helical pump nozzle is selected directly to connect, the shortcoming of this mode is: through whole wall thickness or the screw thread that is positioned on basic load path, under repeated load effect, additional stress raisers and potential formation of crack will be produced, and the sharp corners place that machine adds screw thread also easily produces fatigue crack.In Fig. 2, directly threaded mounting hole on matrix, adopt the mode of elastic conjunction to be directly pressed in structural member by pump nozzle, the shortcoming of this lubricating system is: elastic conjunction may produce additional stress growth and cause cracking, and is not easy to later stage demolition and maintenance.In Fig. 3, in primary load bearing axle, increase mandrel, open lubrication assistant passage, to reach the object of many places lubrication, the shortcoming of this lubricating system is: easily cracked by the horizontal lubrication hole of primary load bearing axle, then cause structural member to lose efficacy.
Summary of the invention
The present invention aims to provide a kind of unstressed lubrication channel structure, by optimizing the structural type of this lubrication channel, can improve the fatigue life of structural member, improves the installation and maintenance performance of structural member.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of unstressed lubrication channel structure, its structural feature is, comprises and mainly holds axle, has the lining of center hole and have the matrix of center hole; Described master to hold in center hole that axle is contained in lining and can rotate around the main axis that hold axle, is connected in the center hole that described lining is contained in matrix with matrix interference; Described master holds between axle and lining has grease channel; Described master holds interference on axle drip ring, this drip ring is equipped with oiling seat, and described oiling seat is equipped with pump nozzle; Described pump nozzle, oiling seat, drip ring and grease channel are connected to form oiling passage.
Thus, the mode that the present invention is connected by interference is fixed together lining and matrix, simultaneously, lubricant oil injects in grease channel by oiling passage orientation, avoid leaking of lubricant oil, solve the lubrication channel design problem of the main rotation portion of traditional important feature part, the fatigue crack that the structural members such as the drip ring increased avoid direct threaded screw thread on important Force transmission parts and cause, is avoided the extra additional stress of pump nozzle elastic conjunction formation, it also avoid the crackle produced by the horizontal lubrication hole of primary load bearing axle simultaneously.
Be below the technological scheme of further improvement of the present invention:
Preferably, described grease channel is be opened in the lubrication groove on lining inwall.Further, described lubrication groove is spiral lubrication groove or spacing grid type lubrication groove.
As a kind of concrete installation form, described drip ring has oiling seat mounting hole, described oiling seat is profile of tooth pump nozzle seat, and the parts of tooth of described oiling seat is installed in described oiling seat mounting hole.
The inwall of described drip ring and main holding between axle outer wall are provided with the first seal ring, are provided with the second seal ring between the inwall of described drip ring and liner outer wall, and described first seal ring and the second seal ring divide and be located at oiling passage both sides.Thus, the path seal that leaks of lubricant oil is lived by two seals circle, and the grease channel only flowing to lining is interior to realize lubrication, realizes lubrication orientation object fast and effectively.
Compared with prior art, the invention has the beneficial effects as follows: the present invention installs, it is efficient and convenient to safeguard; Remain the structural integrity of important load-carrying member, improve the use fatigue life of load-carrying member.
Accompanying drawing explanation
Fig. 1 is a kind of conventional lubrication channels designs sketch;
Fig. 2 is another kind of conventional lubrication channels designs sketch;
Fig. 3 is another conventional lubrication channels designs sketch;
Fig. 4 is the structure principle chart of one embodiment of the invention.
In the drawings
1-matrix; 2-lining; 3-primary load bearing axle; 4-pump nozzle; 5-mandrel;
6-pump nozzle seat; 7-drip ring; 8-first seal ring; 9-second seal ring.
Embodiment
Below in conjunction with accompanying drawing 4 and embodiment, the present invention is further elaborated.
A kind of unstressed lubrication channel structure, as shown in Figure 4, sets up the structural members such as lining, drip ring, seal ring, pump nozzle seat in the main rotation portion of important feature part; For preventing directly contacting between the constitutional detail of cooperation, thus reducing the repair of joint defect, setting up lining herein.For ensureing that lubrication fully, lining is got on the bus and is made the lubrication groove of spiral or grid type.Threaded pump nozzle seat mounting hole on drip ring, not direct threaded lubrication hole on important load-carrying member, remain the structural integrity of important load-carrying member, then ensure that its usability is not destroyed.And the car system of lubrication groove and the installation of seal ring 8,9, ensure that the quick validity of lubrication on lining.
Concrete installation process is as follows:
1) hot-assembling method is adopted to be loaded by lining 2 in the hole of matrix 1;
2) primary load bearing axle 3 is loaded in lining 2 hole;
3) be pressed on drip ring 7 in corresponding aperture by profile of tooth pump nozzle seat 6, be pressed into by pump nozzle 4 in pump nozzle seat 6, by seal ring 8,9 are installed in sealed groove corresponding in drip ring 7 endoporus, and then integral installation is on primary load bearing axle 3.
The content that above-described embodiment is illustrated should be understood to these embodiments only for being illustrated more clearly in the present invention, and be not used in and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
Claims (5)
1. a unstressed lubrication channel structure, is characterized in that, comprises and main holds axle (3), has the lining (2) of center hole and have the matrix (1) of center hole; Described master to hold in center hole that axle (3) is contained in lining (2) and can rotate around the main axis that hold axle (3), is connected in the center hole that described lining (2) is contained in matrix (1) with matrix (1) interference; Described master holds between axle (3) and lining (2) has grease channel; Described master holds the upper interference of axle (3) drip ring (7), this drip ring (7) is equipped with oiling seat (6), described oiling seat (6) is equipped with pump nozzle (4); Described pump nozzle (4), oiling seat (6), drip ring (7) and grease channel are connected to form oiling passage.
2. unstressed lubrication channel structure according to claim 1, is characterized in that, described grease channel is for being opened in the lubrication groove on lining (4) inwall.
3. unstressed lubrication channel structure according to claim 2, is characterized in that, described lubrication groove is spiral lubrication groove or spacing grid type lubrication groove.
4. unstressed lubrication channel structure according to claim 1, it is characterized in that, described drip ring (7) has oiling seat mounting hole, described oiling seat (6) is profile of tooth pump nozzle seat, and the parts of tooth of described oiling seat (6) is installed in described oiling seat mounting hole.
5. according to the unstressed lubrication channel structure one of claim 1-4 Suo Shu, it is characterized in that, inwall and main the holding between axle (3) outer wall of described drip ring (7) are provided with the first seal ring (8), be provided with the second seal ring (9) between the inwall of described drip ring (7) and lining (2) outer wall, and described first seal ring (8) and the second seal ring (9) point are located at oiling passage both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410569337.4A CN104329553B (en) | 2014-10-23 | 2014-10-23 | Unstressed lubrication channel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410569337.4A CN104329553B (en) | 2014-10-23 | 2014-10-23 | Unstressed lubrication channel structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104329553A true CN104329553A (en) | 2015-02-04 |
| CN104329553B CN104329553B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410569337.4A Active CN104329553B (en) | 2014-10-23 | 2014-10-23 | Unstressed lubrication channel structure |
Country Status (1)
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| CN (1) | CN104329553B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598501A (en) * | 2016-03-31 | 2016-05-25 | 国营第六一六厂 | Converse boring processing device for intermittent deep hole |
| CN106195601A (en) * | 2016-07-29 | 2016-12-07 | 安徽江淮汽车股份有限公司 | A kind of grease nipple mounting structure |
| CN107902104A (en) * | 2017-11-17 | 2018-04-13 | 山东太古飞机工程有限公司 | Aircraft press-in type lubrication connection assembly and disassembly methods |
| CN111658930A (en) * | 2020-07-13 | 2020-09-15 | 河北云悦生物科技有限公司 | Desk type hydrogen-oxygen breathing machine |
| CN114738650A (en) * | 2022-04-29 | 2022-07-12 | 中国商用飞机有限责任公司 | Lubricating assembly and mounting mode thereof |
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| US4650430A (en) * | 1985-08-13 | 1987-03-17 | Brunswick Corporation | Marine drive gear case lubrication system |
| CN201895695U (en) * | 2010-11-12 | 2011-07-13 | 青特集团有限公司 | Knuckle bushing lubricating structure |
| CN102431875A (en) * | 2011-12-12 | 2012-05-02 | 苏州汉森电梯有限公司 | Step shaft sleeve for step shaft of escalator |
| CN202361049U (en) * | 2011-12-03 | 2012-08-01 | 太原矿山机器集团有限公司 | Oil inlet cover structure at pin shaft end of centralized lubricating system of heading machine |
| CN203430981U (en) * | 2013-09-13 | 2014-02-12 | 徐工集团工程机械股份有限公司科技分公司 | Novel lubricating structure for hinge pin of loading machine |
| CN203487903U (en) * | 2013-10-11 | 2014-03-19 | 中航飞机股份有限公司西安飞机分公司 | Bolt lock structure |
| CN203560701U (en) * | 2013-09-24 | 2014-04-23 | 广西柳工机械股份有限公司 | Solid grease filling device |
| CN103994146A (en) * | 2014-05-18 | 2014-08-20 | 金迪荣 | Balanced bearing |
| CN204164632U (en) * | 2014-10-23 | 2015-02-18 | 中航飞机起落架有限责任公司 | Unstressed lubrication channel structure |
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2014
- 2014-10-23 CN CN201410569337.4A patent/CN104329553B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4650430A (en) * | 1985-08-13 | 1987-03-17 | Brunswick Corporation | Marine drive gear case lubrication system |
| CN201895695U (en) * | 2010-11-12 | 2011-07-13 | 青特集团有限公司 | Knuckle bushing lubricating structure |
| CN202361049U (en) * | 2011-12-03 | 2012-08-01 | 太原矿山机器集团有限公司 | Oil inlet cover structure at pin shaft end of centralized lubricating system of heading machine |
| CN102431875A (en) * | 2011-12-12 | 2012-05-02 | 苏州汉森电梯有限公司 | Step shaft sleeve for step shaft of escalator |
| CN203430981U (en) * | 2013-09-13 | 2014-02-12 | 徐工集团工程机械股份有限公司科技分公司 | Novel lubricating structure for hinge pin of loading machine |
| CN203560701U (en) * | 2013-09-24 | 2014-04-23 | 广西柳工机械股份有限公司 | Solid grease filling device |
| CN203487903U (en) * | 2013-10-11 | 2014-03-19 | 中航飞机股份有限公司西安飞机分公司 | Bolt lock structure |
| CN103994146A (en) * | 2014-05-18 | 2014-08-20 | 金迪荣 | Balanced bearing |
| CN204164632U (en) * | 2014-10-23 | 2015-02-18 | 中航飞机起落架有限责任公司 | Unstressed lubrication channel structure |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598501A (en) * | 2016-03-31 | 2016-05-25 | 国营第六一六厂 | Converse boring processing device for intermittent deep hole |
| CN106195601A (en) * | 2016-07-29 | 2016-12-07 | 安徽江淮汽车股份有限公司 | A kind of grease nipple mounting structure |
| CN107902104A (en) * | 2017-11-17 | 2018-04-13 | 山东太古飞机工程有限公司 | Aircraft press-in type lubrication connection assembly and disassembly methods |
| CN107902104B (en) * | 2017-11-17 | 2020-08-04 | 山东太古飞机工程有限公司 | Dismounting method for press-in type lubricating joint of airplane |
| CN111658930A (en) * | 2020-07-13 | 2020-09-15 | 河北云悦生物科技有限公司 | Desk type hydrogen-oxygen breathing machine |
| CN111658930B (en) * | 2020-07-13 | 2023-05-26 | 河北云悦生物科技有限公司 | Desk type oxyhydrogen breathing machine |
| CN114738650A (en) * | 2022-04-29 | 2022-07-12 | 中国商用飞机有限责任公司 | Lubricating assembly and mounting mode thereof |
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| Publication number | Publication date |
|---|---|
| CN104329553B (en) | 2017-04-05 |
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