CN105439039B - Change nose-gear wheel equipment - Google Patents
Change nose-gear wheel equipment Download PDFInfo
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- CN105439039B CN105439039B CN201510881311.8A CN201510881311A CN105439039B CN 105439039 B CN105439039 B CN 105439039B CN 201510881311 A CN201510881311 A CN 201510881311A CN 105439039 B CN105439039 B CN 105439039B
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- fuel tank
- valve
- pressurized strut
- piston rod
- hand
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Abstract
One kind changes nose-gear wheel equipment, and it includes base, pressurized strut, piston rod, fuel tank and hand pump, and technical points are：The upper middle side part of the base is provided with fuel tank, the fuel tank is equipped with filler cap, pressurized strut and hand pump with handle are respectively arranged on the base with fuel tank both sides, piston rod is provided with pressurized strut, adjusting screw rod is provided with piston rod, is provided with support and top from the bottom to top in adjusting screw rod.The through hole of the equipment top alignment aircraft nose landing gear piston rod axis bottommost of the present invention, independent support top aircraft；With " jack-up ", " decline " double-direction control；Hydraulic system has the safety guard for being used for preventing hypertonia；The maintaining of the equipment is simple, safe and reliable, service life length.
Description
Technical field
It is more particularly to a kind of to change nose-gear wheel equipment the invention belongs to hydraulic hoisting apparatus technical field.
Background technology
It is well known that it is that support top aircraft nose landing gear pillar carries out replacing front airplane wheel of airplane to change nose-gear wheel equipment
Special equipment.The equipment is an innovative product, and its innovation and application, which solve, to be not required to the full machine of support top aircraft and can change
The problem of airplane wheel, the maintenance work efficiency of outfield undercarriage is improved, had to the rate of attendance for improving aircraft particularly significant
Meaning.If to changing the mandril of lifting jack finishing of nose-gear equipment and to supporting stand size redefinition, can make the equipment should
With the dismantlement work that wheel is carried out on polytype aircraft, therefore, this innovative technology has very big market value.
Existing product, particularly when dismounting nose-gear wheel, it is necessary to very heavy before the main jack of aircraft and aircraft
Topmast top aircraft, so its maintenance procedures is complicated, maintenance time length, maintenance cost height.
The content of the invention
In order to solve the above technical problems, the present invention proposes a kind of replacing nose-gear wheel equipment, pass through equipment pressurized strut
Push rod, the nose-gear pillar lower seat of direct support top aircraft, shake manual pump pressurized strut rise make before wheel it is liftoff, i.e.,
Wheel inspection can be carried out and change aero tyre work.When carrying out this work, two main wheels of aircraft are being supported on
On ground.
The technical proposal of the invention is realized in this way：
One kind changes nose-gear wheel equipment, and it includes base, pressurized strut, piston rod, fuel tank and hand pump, the bottom
The upper middle side part of seat is provided with fuel tank, and the fuel tank is equipped with the filler cap with passage, is set respectively on the base of fuel tank both sides
Pressurized strut and the hand pump with handle are equipped with, piston rod is provided with pressurized strut, the piston rod is that two level is telescopic, in work
Adjusting screw rod is provided with stopper rod, is provided with support and top from the bottom to top in adjusting screw rod；The handle of the hand pump exists
Suction interior with oil inlet is connected with two single-stage plungers, and the suction with spring is provided with each single-stage plunger and is lived
Door, plunger cavity oil outlet end corresponding to suction valve are provided with check valve, booster cavity parallel connection pressure piping corresponding to check valve,
The pressure piping outwards connects hand-operated direction valve through oil-out, and the hand-operated direction valve is sequentially connected by lift line and cut manually
Only valve, choke valve and the lifting of pressurized strut chamber, the pressure of pressurized strut decline chamber and connect hand-operated direction valve and oil by declining pipeline
Case；The oil inlet connection fuel tank of the suction room.
As further technical scheme, the base is provided at both ends with handle.
As further technical scheme, equipped with the stock rod for checking fuel tank operating fluid level on the filler cap.
As further technical scheme, the pressurized strut bottom is provided with the drain oil for being easy to discharge working solution.
As further technical scheme, holding top is provided with the gap between top and adjusting screw rod vertical
The rubber bumper of position.
As further technical scheme, the pressure piping inwardly connects suction room through safety valve.
As further technical scheme, the upper end edge placement of the pressurized strut is connected with protective cover by adaptor.
Beneficial effects of the present invention are：
1. the through hole of equipment top alignment aircraft nose landing gear piston rod axis bottommost, independent support top aircraft；
2. there is " jack-up ", " decline " double-direction control；
3. hydraulic system has the safety guard for being used for preventing hypertonia；
4. the maintaining of the equipment is simple, safe and reliable, service life length.
Brief description of the drawings
Fig. 1 is the broken section structure schematic diagram of the present invention；
Fig. 2 is Fig. 1 top view；
Fig. 3 is the hydraulic schematic diagram of the present invention；
Fig. 4 is the hydraulic schematic diagram of handlance in Fig. 1.
In figure：1st, protective cover；2nd, fuel tank；3rd, filler cap；4th, stock rod；5th, adjusting screw rod；6th, support；7th, come directly towards；8th, serve as a contrast
Set；9th, adaptor；10th, pressurized strut；11st, hand-operated direction valve；12nd, hand stop valve；13rd, rubber bumper；14th, second piston
Bar；15th, first stage piston bar；16th, choke valve；17th, base；18th, handle；19th, handle；20th, hand pump；21st, safety valve；22、
First plunger；23rd, the first suction valve；24th, the first check valve；25th, pressure piping；26th, the second check valve；27th, second
Suck valve；28th, the second note plug；A, chamber is lifted；B, force to decline chamber；A, room is sucked；B, plunger cavity；C, booster cavity；D, buffer
Chamber.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
As shown in figures 1-4, it is a kind of replacing nose-gear wheel equipment of the present invention, including：
Base 17, pressurized strut 10, piston rod, fuel tank 2 and hand pump 20, the upper middle side part of the base 17 are provided with fuel tank
2, the fuel tank 2 is equipped with the filler cap 3 with passage, and pressurized strut 10 and band are respectively arranged with the base 17 of the both sides of fuel tank 2
The hand pump 20 of handle 19, piston rod is provided with pressurized strut 10, and the piston rod is that two level is telescopic, i.e.,：Second piston
Bar 14 and first stage piston bar 15；Adjusting screw rod 5 is provided with second piston rod 14, is set from the bottom to top in adjusting screw rod 5
There are support 6 and top 7；The handle 19 of the hand pump 20 is connected with two single-stage plungers in the suction room a with oil inlet,
I.e.：First note plug 22 and the second note plug 28, are provided with the suction valve with spring, i.e., on each single-stage plunger：First suction
Valve 23 and second sucks valve 27, and plunger cavity b oil outlet ends corresponding to suction valve are provided with check valve, i.e.,：First is unidirectional
The check valve 26 of valve 24 and second, booster cavity c parallel connections pressure piping 25 corresponding to check valve, the pressure piping 25 outwards pass through
Oil-out connects hand-operated direction valve 11, and the hand-operated direction valve 11 is sequentially connected hand stop valve 12, throttling by lift line
Valve 16 and the lifting chamber A of pressurized strut 10, the pressure of pressurized strut 10 decline chamber B and connect hand-operated direction valve 11 and oil by declining pipeline
Case 2；The oil inlet connection fuel tank 2 of the suction room a.The pressure piping 25 inwardly connects suction room a through safety valve 21.
The base 17 is provided at both ends with handle 18.
Equipped with the stock rod 4 for checking the operating fluid level of fuel tank 2 on the filler cap 3.
The bottom of pressurized strut 10 is provided with the drain oil for being easy to discharge working solution.
The rubber bumper for keeping top 7 in upright position is provided with gap between top 7 and adjusting screw rod 5
13。
The upper end edge placement of the pressurized strut 10 is connected with protective cover 1 by adaptor 9.
In addition, also include bushing 8 and cushion chamber d in figure.
The operation principle of hand pump
In the direction of arrows shake hand pump handle when, see Fig. 4, the first plunger 22 moves up, liquid from suction a grams of room
The resistance for taking the first suction valve 23 enters the plunger cavity b of the first plunger 22；Stop moment in the first plunger 22, the first suction is lived
Door 23 closes fuel feed hole under the action of the spring；While being moved upwards with the first plunger 22, the second plunger 28 moves down.This
When, suction valve 28 is closed, and note plug chamber b work fluid washes the second check valve 26 open and is squeezed into increasing corresponding to the second plunger 28
Pressure pipe road 25；When the pressure in pressure piping 25 is increased to greater than 16MPa, safety valve 21 is opened, booster cavity c and suction
Room a is connected；Partially liq metaideophone plays a protective role to suction room to hydraulic system.
The operation principle of the present invention
As shown in Figure 3：A) when hand pump 20 works, working solution is by hydraulic oil container 2, along Pipeline transport to hand pump 20；
Under pressure, hydraulic oil enters hand-operated direction valve 11 along pipeline, and piston rod is risen or fallen depending on hand-operated direction valve 11
Position, hand-operated direction valve 11 is placed in " jack-up " position, hydraulic oil is along hand stop valve 12 and choke valve of the pipeline through opening
16 enter pressurized strut lifting chamber A, and piston rod raises；When piston rod raises, force to decline chamber B diminutions, hydraulic oil is through manual
Reversal valve 11 returns to fuel tank 2；
When hand-operated direction valve handle b) being placed in into " decline " position, under load effect, lifting chamber A is compressed, hydraulic oil
Fuel tank 2 is returned to through choke valve 16 and hand stop valve 12, simultaneously because forcing to decline the increase of chamber B cavity spaces, some hydraulic pressure
Oil, which enters, to be forced to decline chamber B；
When hand-operated direction valve handle c) being placed in into " forcing decline " position, hydraulic oil enters pressurized strut along pipeline through reversal valve
Force to decline chamber B, hydraulic oil forces piston rod to decline, and lifting chamber A is compressed, and hydraulic oil is through choke valve 16 and hand stop valve 12
Return to fuel tank 2；
D) when piston rod is in loaded state in jack-up position, (the hand stop valve handle that turns clockwise is closing) closes
Hand stop valve 12 can ensure to lift chamber A sealing；
E) pressurized strut is from during lifting chamber A oil extractions, and the check valve in choke valve 16 is closed, and fluid can only lead to from aperture
Cross, limit the sinking speed of piston rod.
Application method
1. the preparation before use
A) have to check for changing each position of nose-gear wheel equipment before use, and determine that all parts should stand intact,
Threaded connection should be fixed normally, and fuel tank 2 truly has working solution and should meet requirement；
B) filler cap 3 of fuel tank 2 is unscrewed into 1.5-2 circles, protective cover 1 is removed；
C) hand-operated direction valve 11 is placed in " jack-up " position, opens hand stop valve 12, shaking hand pump 20 makes piston rod
Move out to whole stretchings, the handle of hand-operated direction valve 11 be then placed in " forcing decline " position, open hand stop valve 12,
Shaking hand pump 20 declines piston rod, and so ascending, descending several times, makes the air in pressurized strut 10 exclude completely repeatedly.
D) adjusting screw rod 5 in pressurized strut 10 is screwed out certain altitude with spanner；
2. jack up, put down, forcing and put down aircraft
A) replacing nose-gear wheel equipment is placed under aircraft nose landing gear position, makes replacing nose-gear wheel equipment
The one diameter phi 34mm of alignment aircraft nose landing gear piston rod axis bottommost of top 7, wall thickness 10mm through hole, rise before seeing replacing
Fall frame wheel device location schematic diagram；
B) hand-operated direction valve 11 is placed on " jack-up " position, opens hand stop valve 12, shake the handle 19 of hand pump 20,
Piston rod is increased and jack up aircraft, in the liftoff 30-50 millimeters of wheel, close hand stop valve 12 and (turn clockwise and cut manually
Only valve handle is closing), you can dismounting wheel；
C) after wheel installs, hand-operated direction valve 11 is placed on " decline " position, slowly opens hand stop valve 12
(rotate counterclockwise hand stop valve handle is opening), make replacing nose-gear wheel equipment piston rod under aircraft weight effect
Steadily put down, allow wheel to land；
D) to continue to fall piston rod, hand-operated direction valve 11 is placed on " forcing decline " position, shakes the hand of hand pump 20
Handle 19, replacing nose-gear wheel equipment top is set to fall until completely disengaged with nose-gear piston rod；
E) nose-gear wheel equipment will be changed to remove under aircraft, is screwed into adjusting screw rod 5, puts and change nose-gear machine
Equipment protection cover 1 is taken turns, the fuel tank cap of filler cap 3 is tightened, unloads the handle 19 of pump, replacing nose-gear wheel equipment and hand
Handle 19 loads Special packaging box.
Maintaining
1. change nose-gear wheel equipment when not in use, it is necessary to be screwed into adjusting screw rod 5, put protective cover 1, load special
Packing case, to keep the cleaning of landing piston rod and antirust.
2. to check within every six months that ne-leakage is answered in conduit installation junction comprehensively, motive position should more oil change, it is necessary to
When should change within 2 years the sealing ring of a pressurized strut and piston rod, and No. 15 aircraft fluids in hydraulic system.
3. the exchonge step of hydraulic fluid is as follows：
A) filler cap 3 is backed out, oily filter is taken out, replacing nose-gear wheel equipment is turned over and poured out in fuel tank 2
Residual oil；
B) oily filter is placed in fuel tank oral pore, and oil dropping apparatus adds fresh oil, until the depth of groove on scale；
C) handle 19 of hand pump 20 is placed on operating position and piston rod is raised to highest, then force to drop by piston rod
Under；
D) oily filter is taken out, the Residual oil in fuel tank 25 is released, then fuel tank 2 refuels to standard volume；
E) shaking hand pump 20 makes piston rod rise, decline, and so ascending, descending several times, excludes the gas in pressurized strut 10 repeatedly
Body；
F) filler cap 3 is screwed home, puts protective cover 1, and the handle 19 of hand pump 20 is put well.
4. the exchonge step of lubricating grease is as follows in screw pair：
A) dust and dirt of pressurized strut 10 and piston rod end face are removed；
B) back out screw rod and pull down the replacing nose-gear wheel equipment top 7 of deflection；
C) rubber bumper 13 is backed out with spanner；
D) fixing nut and adjusting screw rod 5 of inner piston rod are turned, adjusting screw rod 5 is backed out from inner piston rod；
E) adjusting screw rod 5, piston rod cavity and deflection are cleaned with kerosene to come directly towards, and dries them；
F) screw pair and deflection head are applied with aviation general-purpose grease and rinsed uniformly, adjusting screw rod 5 is screwed into inner piston rod, used
Nut is fixed and pinned with screw；
G) rubber bumper 13 is screwed home, deflection top is installed in place and pinned with screw.
5. nose-gear wheel equipment is changed using should load Special packaging box after complete and be stored in rain-proof shelter；
6. change nose-gear wheel equipment for a long time without using (more than six months) when, perform oil using extraordinary antirust oil
Envelope, and be stored in storehouse.
The step of oil sealing works is as follows：
A) nose-gear wheel equipment will be changed to be placed on overhanging heavy frame；
B) dirt and dust changed in nose-gear wheel equipment are removed；
C) two layers of priming paint and two layers of orange-yellow enamel paint are applied to the surface for having damaged skin of paint；
D) all unvarnished working surfaces are cleaned with gasoline, and coat be warmed to 60-80 DEG C 7023 aviation low temperature profit
Consistent lubricant, thickness 0.2-0.5mm；
E) new hydraulic oil is injected to hydraulic system；
F) term of validity of oil sealing is 2 years, and after the time limit expires, changing nose-gear wheel equipment should oil sealing again.
These are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (1)
1. one kind changes nose-gear wheel equipment, it includes base, pressurized strut, piston rod, fuel tank and hand pump, and its feature exists
In：The upper middle side part of the base is provided with fuel tank, and the fuel tank is equipped with the filler cap with passage, the base in fuel tank both sides
On be respectively arranged with pressurized strut and the hand pump with handle, piston rod is provided with pressurized strut, the piston rod stretches for two level
Formula, adjusting screw rod is provided with piston rod, is provided with support and top from the bottom to top in adjusting screw rod；The hand pump
Handle be connected with two single-stage plungers in the suction interior with oil inlet, be provided with each single-stage plunger with spring
Valve is sucked, plunger cavity oil outlet end corresponding to suction valve is provided with check valve, and booster cavity corresponding to check valve is in parallel to be increased
Pressure pipe road, the pressure piping outwards connect hand-operated direction valve through oil-out, and the hand-operated direction valve is connected successively by lift line
Hand stop valve, choke valve and the lifting of pressurized strut chamber are connect, the pressure of pressurized strut declines chamber and changed manually by declining pipeline connection
To valve and fuel tank；The oil inlet connection fuel tank of the suction room；The base is provided at both ends with handle；On the filler cap
Equipped with the stock rod for checking fuel tank operating fluid level；The pressurized strut bottom is provided with the drain oil for being easy to discharge working solution；Coming directly towards
The rubber bumper for keeping top in upright position is provided with gap between adjusting screw rod；The pressure piping inwardly passes through
Safety valve connection suction room；The upper end edge placement of the pressurized strut is connected with protective cover by adaptor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510881311.8A CN105439039B (en) | 2015-12-04 | 2015-12-04 | Change nose-gear wheel equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510881311.8A CN105439039B (en) | 2015-12-04 | 2015-12-04 | Change nose-gear wheel equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105439039A CN105439039A (en) | 2016-03-30 |
| CN105439039B true CN105439039B (en) | 2018-01-12 |
Family
ID=55549764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510881311.8A Active CN105439039B (en) | 2015-12-04 | 2015-12-04 | Change nose-gear wheel equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105439039B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089853B (en) * | 2016-08-25 | 2018-04-17 | 中航飞机起落架有限责任公司 | The pressurized strut and its locking of a kind of built-in machines lock, the method unlocked |
| CN108313326B (en) * | 2018-03-16 | 2023-11-28 | 广州飞机维修工程有限公司 | Integral dismounting device and method for A330 type main landing gear |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB296455A (en) * | 1927-05-30 | 1928-08-30 | Henry Chipman Miller | Improvements in and connected with hydraulic and other fluid pressure jacks |
| CN2062724U (en) * | 1990-03-27 | 1990-09-26 | 吴兴中 | Jack for plane axletree |
| CN2236478Y (en) * | 1995-11-22 | 1996-10-02 | 吴英杰 | Hand-carrying jack for airplane wheel shaft |
| CN2876044Y (en) * | 2006-01-25 | 2007-03-07 | 吴兴中 | Pneumatic hydraulic airplane wheel axle lifting jack |
| CN201580947U (en) * | 2009-12-19 | 2010-09-15 | 四川航泰航空装备有限公司 | Double plunger hydraulic jack |
| CN102358594A (en) * | 2011-10-11 | 2012-02-22 | 上海航空机械有限公司 | Hydraulic jack of portable airplane wheel |
| CN202518975U (en) * | 2012-04-01 | 2012-11-07 | 公主岭国家农业科技园区航空地面设备有限公司 | Novel jack for aircraft wheel shaft |
| CN203845751U (en) * | 2014-05-15 | 2014-09-24 | 上海航空机械有限公司 | Quick hand pump used for aircraft hydraulic jack |
| CN204125115U (en) * | 2014-05-15 | 2015-01-28 | 上海航空机械有限公司 | A kind of rod-pulling type hydraulic jack for airplane |
| CN204356005U (en) * | 2014-12-30 | 2015-05-27 | 哈尔滨通航科技开发有限公司 | Multistage pressurized strut aircraft jack |
-
2015
- 2015-12-04 CN CN201510881311.8A patent/CN105439039B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105439039A (en) | 2016-03-30 |
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