CN108082454A - A kind of undercarriage rocking arm joint mounting structure and method based on self-lubricating bushing - Google Patents
A kind of undercarriage rocking arm joint mounting structure and method based on self-lubricating bushing Download PDFInfo
- Publication number
- CN108082454A CN108082454A CN201711256541.0A CN201711256541A CN108082454A CN 108082454 A CN108082454 A CN 108082454A CN 201711256541 A CN201711256541 A CN 201711256541A CN 108082454 A CN108082454 A CN 108082454A
- Authority
- CN
- China
- Prior art keywords
- rocking arm
- bushing
- limitation
- neck bush
- external bushing
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The present invention relates to a kind of undercarriage rocking arm joint mounting structures and method based on self-lubricating bushing, belong to helicopter mounting structure technical field, it is by having redesigned inside and outside bush structure, and work is added afterwards by first installing external bushing, neck bush is installed again afterwards and adds two step of work and realizes that the concentricity of two earholes of rocking arm connector is met the requirements.The assembly method based on self-lubricating can realize the lubrication for finally needing the neck bush endoporus and side wall being connected with rocking arm in the present invention, the high-precision matching requirements (high-axiality requirement) of undercarriage rocking arm can be met, while line is non-maintaining during meeting bushing service life.
Description
Technical field
The invention belongs to helicopter mounting design technical fields more particularly to a kind of undercarriage based on self-lubricating bushing to shake
Arm connection mounting structure and method.
Background technology
The existing general layout according to aircraft as shown in Figure 1, need to arrange undercarriage rocking arm connector 10 on certain main bulkhead 30,
To transfer 20 load of undercarriage.The ears piece design that the rocking arm connector 10 uses should ensure that stringent geometric tolerance between auricle hole
It is required that (concentricity requirement), with guarantee and the stringent assembly precision of undercarriage rocking arm, simultaneously because 10 junction of rocking arm connector is
The region of high stress and have relative motion, easily occur wearing and fatigue failure, should ensure that left auricle 11 and auris dextra piece 12 endoporus and
The surface roughness of side and other abrasionproof Lubrication Designs should have region (the Tu Zhong thick lines area as shown in Figure 2 of abrasionproof lubrication
Domain).
As shown in Figure 3 and Figure 4, four bushings are attached separately to two ears to the bushing mounting technology used at present using temperature differential method
On piece using the method for adding work after having assembled, ensures the concentricity between four bushings, on rocking arm connector 10 by bore hole
It is provided with oil filler point 13, gap 17 is left between two bushings (left bushing 14 and right bushing 16) in each auricle as oiling
Slot, by oil filler point 13 to oiling inside two bushings, two bushings are equipped with oil storage tank 16 and oil storage, guarantee to lubricate for a long time.
However in current assembly method, oiling be easy to it is insufficient, cannot realize bushing inner wall all areas lubricate；Together
When can not achieve bush end face side wall lubrication；Regular oiling is frequently necessary to simultaneously, and it is inconvenient to safeguard；Undercarriage rocking arm is high stress
Area opens oil filler point and easily generates fatigue crack.
The content of the invention
The purpose of the present invention is the requirement in terms of adaptation general layout and rocking arm connector installation accuracy, abrasionproof lubrication, is selected
Self-lubricating bushing with lubrication pad, designs a kind of rocking arm connector high-precision assembling model based on self-lubricating bushing, uses
New assembly method realizes the installation of bushing, realizes the non-maintaining requirement of bushing.
In order to achieve the above objectives, the technical solution adopted by the present invention is：A kind of undercarriage rocking arm based on self-lubricating bushing
Joint mounting structure, for causing the axis collinear of two mounting holes of rocking arm connector, including：
External bushing, the external bushing have limitation external bushing along the limitation outer end moved of installation axially bored line and with it is described
The vertical external bushing body in outer end is limited, the external bushing body is installed in the mounting hole and matches somebody with somebody with the mounting hole interference
It closes, and the limitation outer end is bonded with the end face of the mounting hole；
Neck bush, the neck bush have limitation neck bush along the limitation inner end moved of installation axially bored line and with it is described
The vertical neck bush body in inner end is limited, the neck bush body is installed in the external bushing and matches somebody with somebody with the external bushing interference
It closes, the limitation inner end is located at the one side of the separate limitation outer end of mounting hole and is bonded with the mounting hole；And
Selflubricating liner, it is outer away from erection joint that the selflubricating liner is arranged at the limitation outer end and limitation inner end
Surface and the bore area of the neck bush body.
Further, the material selection linear expansion coefficient of the external bushing and neck bush, hardness are all higher than the rocking arm
Joint material.
Further, the material is stainless steel material.
The present invention also provides a kind of undercarriage rocking arm fitting installation process based on self-lubricating bushing, including：
Step 1：Rocking arm connector completes machining and actual effect processing, and rocking arm connector and external bushing are assembled using temperature differential method, and
Interference fit, after handled through actual effect, work is added to the endoporus of external bushing so that coaxial precision meets tolerance between outer lining sets of holes
It is required that；
Step 2：It is placed in external bushing endoporus, protected using external bushing and rocking arm connector room temperature, neck bush shrinkage assembling liner
The installation concentricity between the neck bush endoporus between neck bush and outer layer bushing in interference fit and two mounting holes is demonstrate,proved in tolerance
In the range of.
The undercarriage rocking arm joint mounting structure based on self-lubricating bushing and method of the present invention realizes undercarriage rocking arm
Connector, self-lubricating bushing assembling ensure assembly precision, lubrication and maintenance-free requirement, while realize that rocking arm load is efficiently spread
And transmission.
Description of the drawings
Attached drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the present invention
Example, and the principle for explaining the present invention together with specification.
Fig. 1 is the undercarriage rocking arm joint arrangement form schematic diagram of the prior art.
Fig. 2 is that the bushing of the prior art needs lubricant housings schematic diagram.
Fig. 3 is the rocking arm connector oiling schematic diagram of the prior art.
Fig. 4 is the bushing assembling schematic diagram of the prior art.
Fig. 5 A and 5B are respectively the external bushing of the present invention and liner structure schematic diagram.
Fig. 6 is the external bushing of the present invention and neck bush installation diagram.
Fig. 7 is the rocking arm connector of the present invention and inside and outside bushing mounting structure figure.
Specific embodiment
To make the purpose, technical scheme and advantage that the present invention is implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, the technical solution in the embodiment of the present invention is further described in more detail.
As shown in Fig. 5 A, Fig. 5 B and Fig. 6, in the present invention using self-lubricating bushing, self-lubricating bushing carries lubrication pad,
Self-lubricating lining is divided into external bushing 100 and neck bush 200, and external bushing 100 has what limitation external bushing 200 was moved along installation axially bored line
Limit outer end 101 and with the vertical external bushing body 102 in limitation outer end, external bushing body 102 be installed in mounting hole and with peace
Hole interference fit is filled, and limits outer end 101 and is bonded with the end face of mounting hole, neck bush 200 has limitation neck bush 200 along installation
The limitation inner end 201 of axially bored line movement and the neck bush body 202 vertical with limitation inner end, neck bush body 202 are installed on outer
Be interference fitted in bushing 200 and with external bushing 200, limitation inner end 201 be located at the one side of the separate limitation outer end 101 of mounting hole and
It is bonded with mounting hole.
For the outer lining 100 of self-lubricating, there is lubricating pad at limitation 101 position of outer end, and for the liner of self-lubricating
Set 200 is respectively provided with lubricating pad in limitation inner end 201 and 202 position of neck bush body.
Since self-lubricating bushing pad cannot add work, using pervious mounting technology it is difficult to ensure that last installation essence
In degree, I therefore the present invention undercarriage rocking arm connector 10 and self-lubricating are realized by using specific structure type and process
Bushing assembles, and ensures assembly precision, lubrication and maintenance-free requirement, while realizes that rocking arm load efficiently spreads and transfers.
Rocking arm connector 10 is with self-lubricating bushing mounting structure form of the invention as shown in fig. 7, using internal layer and outer layer two
The form installation of layer bushing interference fit, external bushing 100 and 10 elastic conjunction of rocking arm connector, external bushing 100 and 200 mistake of neck bush
It is full of assembling, realizes the lubrication of endoporus and side wall, rocking arm connector 10 uses extra super duralumin alloy material, and interior external bushing is using line expansion system
The stainless steel material that number is larger, hardness is high and wear-resisting.
To ensure the installation accuracy of rocking arm, it need to ensure the lining in the ears film perforation of self-lubricating bushing assembling rear arm connector 10
The concentricity of set, while need to ensure rocking arm connector 10 and bushing installation interference volume, therefore bushing is installed using above-mentioned installation method.
Rocking arm connector 10 completes machining and actual effect processing first, using temperature differential method assembling rocking arm connector 10 and external bushing 100, ensures big
Then interference volume is handled through actual effect, the endoporus of external bushing 100 is carried out adding work, height is same between ensureing 100 endoporus of external bushing
Then axis precision is assembled neck bush 200 using the method for 10 room temperature of 200 shrinkage of neck bush, external bushing 100 and rocking arm connector, is prevented
Only 10 heat distortion of external bushing 200 and rocking arm connector ensures larger interference volume and liner between neck bush 200 and external bushing 100
The installation concentricity between 200 endoporus is covered, helicopter rocking arm installation accuracy can be met by above-mentioned assembly method.
In the present invention assembly method based on self-lubricating can realize the neck bush endoporus that finally needs to be connected with rocking arm and
The lubrication of side wall, can meet the high-precision matching requirements (high-axiality requirement) of undercarriage rocking arm, while can meet bushing use
Line is non-maintaining during service life.
The above is only the optimal specific embodiment of the present invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Subject to enclosing.
Claims (4)
1. a kind of undercarriage rocking arm joint mounting structure based on self-lubricating bushing, for causing two mounting holes of rocking arm connector
Axis collinear, which is characterized in that including
External bushing, the external bushing have limitation external bushing along the limitation outer end moved of installation axially bored line and with the limitation
The vertical external bushing body in outer end, the external bushing body are installed in the mounting hole and are interference fitted with the mounting hole,
And the limitation outer end is bonded with the end face of the mounting hole；
Neck bush, the neck bush have limitation neck bush along the limitation inner end moved of installation axially bored line and with the limitation
The vertical neck bush body in inner end, the neck bush body are installed in the external bushing and are interference fitted with the external bushing,
The limitation inner end is located at the one side of the separate limitation outer end of mounting hole and is bonded with the mounting hole；And
Selflubricating liner, the selflubricating liner are arranged at the limitation outer end and limitation outer surface of the inner end away from erection joint
And the bore area of the neck bush body.
2. the undercarriage rocking arm joint mounting structure according to claim 1 based on self-lubricating bushing, which is characterized in that institute
State the material selection linear expansion coefficient of external bushing and neck bush, hardness is all higher than the rocking arm joint material.
3. the undercarriage rocking arm joint mounting structure according to claim 2 based on self-lubricating bushing, which is characterized in that institute
Material is stated as stainless steel material.
4. a kind of undercarriage rocking arm fitting installation process based on self-lubricating bushing, which is characterized in that the undercarriage rocking arm connects
Head installation method includes
Step 1：Rocking arm connector completes machining and actual effect processing, and rocking arm connector and external bushing, and interference are assembled using temperature differential method
Cooperation, after handled through actual effect, work is added to the endoporus of external bushing so that coaxial precision meets tolerance between outer lining sets of holes；
Step 2：It is placed on using external bushing and rocking arm connector room temperature, neck bush shrinkage assembling liner in external bushing endoporus, in guarantee
The installation concentricity between neck bush endoporus between bushing and outer layer bushing in interference fit and two mounting holes is in the margin of tolerance
It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711256541.0A CN108082454B (en) | 2017-12-03 | 2017-12-03 | Undercarriage rocker arm joint mounting structure and method based on self-lubricating bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711256541.0A CN108082454B (en) | 2017-12-03 | 2017-12-03 | Undercarriage rocker arm joint mounting structure and method based on self-lubricating bushing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108082454A true CN108082454A (en) | 2018-05-29 |
| CN108082454B CN108082454B (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711256541.0A Active CN108082454B (en) | 2017-12-03 | 2017-12-03 | Undercarriage rocker arm joint mounting structure and method based on self-lubricating bushing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916247A (en) * | 2018-08-06 | 2018-11-30 | 浙江长盛塑料轴承技术有限公司 | A kind of automotive seat axis plain bearing unit |
| CN111922631A (en) * | 2020-06-28 | 2020-11-13 | 湖北三环锻造有限公司 | Steering knuckle bushing push-free process |
| CN112086840A (en) * | 2019-06-14 | 2020-12-15 | 赛峰起落架系统英国有限公司 | Self-lubricating conductive bearing piece |
| CN112173072A (en) * | 2020-09-25 | 2021-01-05 | 中国直升机设计研究所 | Control surface control mechanism of high-speed helicopter |
| CN112412983A (en) * | 2020-11-16 | 2021-02-26 | 贵州贵航飞机设计研究所 | Gap adjusting shaft sleeve for support and rotary rocker arm |
| CN112461526A (en) * | 2020-11-20 | 2021-03-09 | 中国直升机设计研究所 | Fatigue test loading device for main starting rocker arm joint of unmanned helicopter |
| CN118124312A (en) * | 2024-02-04 | 2024-06-04 | 浙江春风动力股份有限公司 | All-terrain vehicle |
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| CN202991874U (en) * | 2012-12-12 | 2013-06-12 | 浙江博宇机电有限公司 | Wear-proof sleeve of tail shaft of vertical conveyor |
| CN204387110U (en) * | 2014-12-19 | 2015-06-10 | 昆山旭祥钣金工业有限公司 | A kind of axle sleeve of rotary axis of machine tool |
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| CN204646995U (en) * | 2014-12-25 | 2015-09-16 | 上海市轴承技术研究所 | Self-lubricating bushing joint shaft bearing and helicopter |
| CN106812794A (en) * | 2017-03-13 | 2017-06-09 | 浙江双飞无油轴承股份有限公司 | A kind of tandem composite bearing |
| CN107264781A (en) * | 2016-04-06 | 2017-10-20 | 赛峰起落架系统英国有限公司 | Aircraft landing gear component |
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| CN2649857Y (en) * | 2003-09-29 | 2004-10-20 | 明基电通股份有限公司 | Combined bush bearing unit |
| CN2837595Y (en) * | 2005-03-13 | 2006-11-15 | 福建龙溪轴承(集团)股份有限公司 | Self-lubricating joint bearing |
| CN201461740U (en) * | 2009-05-11 | 2010-05-12 | 封仪 | Thermometal extrusion bushing |
| CN202991874U (en) * | 2012-12-12 | 2013-06-12 | 浙江博宇机电有限公司 | Wear-proof sleeve of tail shaft of vertical conveyor |
| CN204387110U (en) * | 2014-12-19 | 2015-06-10 | 昆山旭祥钣金工业有限公司 | A kind of axle sleeve of rotary axis of machine tool |
| CN204433045U (en) * | 2014-12-19 | 2015-07-01 | 成都飞机设计研究所 | Compound type self-lubricating rotating cylinder |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916247A (en) * | 2018-08-06 | 2018-11-30 | 浙江长盛塑料轴承技术有限公司 | A kind of automotive seat axis plain bearing unit |
| CN112086840A (en) * | 2019-06-14 | 2020-12-15 | 赛峰起落架系统英国有限公司 | Self-lubricating conductive bearing piece |
| CN112086840B (en) * | 2019-06-14 | 2023-11-24 | 赛峰起落架系统英国有限公司 | Self-lubricating conductive bearing piece |
| CN111922631A (en) * | 2020-06-28 | 2020-11-13 | 湖北三环锻造有限公司 | Steering knuckle bushing push-free process |
| CN111922631B (en) * | 2020-06-28 | 2021-10-15 | 湖北三环锻造有限公司 | Steering knuckle bushing push-free process |
| CN112173072A (en) * | 2020-09-25 | 2021-01-05 | 中国直升机设计研究所 | Control surface control mechanism of high-speed helicopter |
| CN112412983A (en) * | 2020-11-16 | 2021-02-26 | 贵州贵航飞机设计研究所 | Gap adjusting shaft sleeve for support and rotary rocker arm |
| CN112461526A (en) * | 2020-11-20 | 2021-03-09 | 中国直升机设计研究所 | Fatigue test loading device for main starting rocker arm joint of unmanned helicopter |
| CN112461526B (en) * | 2020-11-20 | 2022-06-21 | 中国直升机设计研究所 | Fatigue test loading device for main starting rocker arm joint of unmanned helicopter |
| CN118124312A (en) * | 2024-02-04 | 2024-06-04 | 浙江春风动力股份有限公司 | All-terrain vehicle |
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|---|---|
| CN108082454B (en) | 2022-03-08 |
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