CN103434655B - A kind of aircraft nose landing gear assembling test car - Google Patents
A kind of aircraft nose landing gear assembling test car Download PDFInfo
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- CN103434655B CN103434655B CN201310384309.0A CN201310384309A CN103434655B CN 103434655 B CN103434655 B CN 103434655B CN 201310384309 A CN201310384309 A CN 201310384309A CN 103434655 B CN103434655 B CN 103434655B
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Abstract
The invention discloses a kind of aircraft nose landing gear assembling test car, utilize four cardan wheels and five servo electric jars, realize the rotation along wheel shaft of the six-freedom motion of nose-gear and the pillar of nose-gear.The amount of movement of nose-gear along X-axis, Y-axis and the amount of spin around Z axis can manual quick adjustment, nose-gear quantitatively regulates by servo electric jar along Z axis amount of movement with around X-axis and the amount of spin of Y-axis, the pillar of nose-gear along the amount of spin of wheel shaft, and real time and determine amount control realizes six-freedom motion.The degree of freedom of nose-gear assembling test car is high, accurate positioning during assembling, easily, can realize fixing quantity when assembling, and manual quick adjustment flexibly, the assembly precision of nose-gear is improved greatly, saves time of setting up.
Description
Technical field
The present invention relates to Design of Mechanical Structure and equipment technical field, specifically, relate to a kind of aircraft nose landing gear assembling test car.
Background technology
At present, its Degree of Structure Freedom of test car being applied to aircraft nose landing gear assembling is dumb, and operation is aimed at by manual operation and assembles difficulty, not only expends time in and affects the precision of undercarriage assembling, and affect the safety of aircraft.The nose-gear assembling test car flexible operation of six-freedom degree motion, activity space scope is large, and test car can carry out three-dimensional and move and Three dimensional rotation, the free motion of implementation space.
Disclose a kind of six degree of freedom buttjunction platform in patent CN101081504, this docking platform is superimposed by the function of plane regulating mechanism and setting regulating mechanism, realizes the motion of six-freedom degree.In patent CN2677679, describe a kind of six-freedom hydraulic servo platform with ball pivot, this hydraulic servo platform uses the running of ball strand, and utilize servocontrol to realize programming control, whole platform can operate arbitrarily and stop.Above-mentioned technology adopts the superposition of motion to realize six degree of freedom, six degree of freedom buttjunction platform can manual regulation, but its degree of freedom cannot quantitatively regulate, though the six-freedom hydraulic servo platform with ball pivot quantitatively can be regulated by servo, but some less demanding degree of freedom cannot realize manually quick adjustment flexibly, completing fast of the carrying operation of whole mechanism cannot be realized.
Summary of the invention
The present invention proposes a kind of aircraft nose landing gear assembling test car, be mainly used in nose-gear transport in assembling test factory building and nose-gear position when docking with assembling test type frame, attitude adjustment.Nose-gear is assemblied on nose-gear assembling test car, utilizes air floating platform to realize the movement of nose-gear along X-axis, Y-axis and the rotation around Z axis; Four vertical servo electric jars are utilized to realize nose-gear along the movement of Z axis and the rotation around X-axis, Y-axis; A horizontal servo electric cylinder is utilized to realize the rotation of pillar along wheel shaft of nose-gear.The horizontal radial of wheel shaft is X-direction, and the axis of wheel shaft is Y direction, vertical direction is Z-direction, rotates to be pitching around wheel shaft.Test car can move, turn in factory building, nose-gear is transported to type frame installation site from assembly station, realize nose-gear in X-axis, Y-axis, the movement of Z axis three axis and the rotation around three axles, realize the fine motion adjustment of nose-gear pitch attitude, namely realize the rotation of pillar along wheel shaft of nose-gear.
The technical solution adopted for the present invention to solve the technical problems is: alighting gear assembling test car, comprise erecting stage, cardan wheel, push rod, wherein, also comprise control housing, V shaped slab, vertical plate, overhanging adapter plate, flap, servo electric jar, slide block mechanism, safety limit switch, control housing is positioned at the outside of vertical plate on erecting stage, push rod is fixed on vertical plate outer upper, and cardan wheel is installed in corner, erecting stage bottom surface; Described V shaped slab is fixed on erecting stage middle part, slot is had in the middle of on two plate faces of V shaped slab, V shaped slab quadripolar corners is connected by middle connecting plate and four the vertical servo electric jar ends be fixedly mounted on erecting stage, and flap and side shield are connected and are positioned at V shaped slab side; Slide block mechanism and horizontal servo electric cylinder are mounted between overhanging adapter plate and flap, and safety limit switch is separately fixed between the vertical servo electric jar at V shaped slab two ends; Described overhanging adapter plate side and V shaped slab are connected, and horizontal servo electric cylinder is connected with the vertical plate of overhanging adapter plate, and horizontal servo electric cylinder bar coordinates with the tapped bore of fixture block bottom; Described flap is that L shape and side shield are connected, and have round tube hole in the middle of the vertical section of flap, lower end has dovetail furrow; Described slide block mechanism comprises fixture block and dovetail furrow slide block, the rectangular slab of slide block lower end snaps in the Baltimore groove of fixture block, little rotating shaft is through the through hole of rectangular blocks and the through hole of fixture block side, and dovetail furrow slide block is around little axis of rotation, and dovetail furrow slide block snaps in the dovetail furrow of flap; Described servo electric jar comprises four vertical servo electric jars and a horizontal servo electric cylinder; Four vertical servo electric jars are separately fixed on erecting stage, and spherical nut is installed in the end of four vertical servo electric jar bars, and is fixed by large jam nut and little jam nut; The ball screw thread of four spherical nuts is arranged in the square slotted eye of the circular hole of the first spherical nut connecting panel, the circular slotted eye of the second spherical nut connecting panel, the circular slotted eye of the 3rd spherical nut connecting panel, the 4th spherical nut connecting panel respectively; Four spherical nut connecting panels are connected with the corner of V shaped slab respectively.
Beneficial effect
A kind of aircraft nose landing gear assembling test car that the present invention proposes, utilizes four cardan wheels and five servo electric jars, realizes the rotation along wheel shaft of the six-freedom motion of nose-gear and the pillar of nose-gear.Nose-gear along X-axis, Y-axis amount of movement and around Z axis amount of spin can manual quick adjustment, nose-gear quantitatively regulates by servo electric jar along Z axis amount of movement with around X-axis and the amount of spin of Y-axis, the pillar of nose-gear along the amount of spin of wheel shaft, can real time and determine amount control, realize six-freedom motion.The degree of freedom of nose-gear assembling test car is high, aims at easily during assembling, can realize fixing quantity when assembling, and manual quick adjustment flexibly, the assembly precision of nose-gear is improved greatly, saves time of setting up.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, a kind of aircraft nose landing gear assembling test of the present invention car is described in further detail.
Fig. 1 is that assembling test car of the present invention and nose-gear assemble schematic diagram.
Fig. 2 is assembling test bassinet structure schematic diagram of the present invention.
Fig. 3 is assembling test axletree mapping of the present invention.
Fig. 4 is that assembling test car of the present invention and nose-gear assemble positive direction view.
Fig. 5 is the first spherical nut connecting panel of assembling test car.
Fig. 6 is the second spherical nut connecting panel of assembling test car.
Fig. 7 is the 3rd spherical nut connecting panel of assembling test car.
Fig. 8 is the 4th spherical nut connecting panel of assembling test car.
Fig. 9 is the spherical nut schematic diagram of assembling test car.
Figure 10 is slide block mechanism schematic diagram.
Figure 11 is slide block mechanism birds-eye view.
Figure 12 is the positive direction view of flap.
Figure 13 is aircraft nose landing gear structural representation.
Figure 14 is aircraft nose landing gear structure side direction view.
In figure:
Experimental 1. 2. The landing gear tires before 3. 4. The landing gear struts is before installation platform 5. 6. V board vertical servo electric cylinder 7. Universal wheel 8. Left the safety limit switch 9. Left baffle the overhanging fixed plate 11. 12. Horizontal servo electric cylinder slider mechanism 13. 14. Turn plate rotation 15. Right baffle 16. Right safety limit switch 17. Side platens 18. The vertical plate 19. The push rod, the fourth ball nut connecting plate 21. The second ball nut connecting plate 22. The intermediate connecting plate 23. The third ball nut connecting plate. The first ball nut connecting plate 25. The control cabinet 26. The safety limit switch 27 after welding plate 28. The baffle 29 before and after the safety limit switch before 30. Vertical servo electric cylinder rod 31. Small lock nut 32. Big lock nut 33. Threaded ball 34 dovetail groove slider 35 small shaft 36 card block with a lock nut 38. The horizontal servo electric cylinder rod
Detailed description of the invention
The present embodiment is a kind of aircraft nose landing gear assembling test car.
Consult Fig. 1-Figure 14, invention aircraft nose landing gear assembling test car, comprise erecting stage 4, cardan wheel 7, push rod 19, wherein, also comprise control housing 25, V shaped slab 5, vertical plate 18, overhanging adapter plate 10, flap 13, servo electric jar, slide block mechanism 12, safety limit switch, the cylinder rod end surface of horizontal servo electric cylinder 11 is fixed with slide block mechanism 12, cylinder bar can drive slide block mechanism 12 to move, one end of slide block mechanism and the cylinder bar of horizontal servo electric cylinder 11 are fixed, the other end is connected with L shape flap 13, and can slide in the dovetail furrow of flap 13, nose-gear pillar 3 leans against on flap 13, along with flap motion.When the cylinder bar of horizontal servo electric cylinder moves, slide block mechanism 12 will be made to drive flap to move, the rotation of flap drives nose-gear pillar 3 around the rotation of wheel shaft, and adjustable nose-gear is around the rotation of wheel shaft.When the cylinder bar of horizontal servo electric cylinder 11 is static, pillar is pressed on the cylinder bar of horizontal servo electric cylinder 11 by flap and slide mechanism due to Action of Gravity Field, realizes the fixing of nose-gear in fitting process, facilitates the assembling of nose-gear and fuselage.
Erecting stage four angles on a cardan wheel is installed respectively, and cardan wheel 7 is connected with the tapped bore hole of erecting stage 4 by self stud.Vertical plate 18 is welded on the right side of erecting stage 4, and push rod 19 is welded on the rear side of vertical plate 18.Control housing 25 is fixed on welded plate and is welded on after erecting stage.The tire of nose-gear is placed on V shaped slab 5, tire respectively with the horizontal plate of V shaped slab 5 and two hang plates tangent.One end of welded plate is welded on the upper end of hang plate on the right side of V shaped slab 5, and keeps the vertical of welded plate and V shaped slab 5 horizontal surface.
Four vertical servo electric jars 6 are connected with air floating platform respectively by four bolts, respectively at the upper end Plane Installation spherical nut of four vertical servo electric jar bars, and are fixed by large jam nut 32 and little jam nut 31.The ball screw thread of four spherical nuts is arranged on respectively in the square groove of the circular hole of the first spherical nut connecting panel 24, the circular trough of the second spherical nut connecting panel 21, the circular trough of the 3rd spherical nut connecting panel 23, the 4th spherical nut connecting panel 20.Its vertical plate is connected with one end of middle connecting plate respectively by four bolts by four spherical nut connecting panels.The other end of four middle connecting plates is linked together with four angles of V shaped slab hang plate respectively by welding, welds four gussets respectively fix in four junctions of middle connecting plate and V shaped slab 5.
The side of the horizontal plate of overhanging adapter plate 10 and the trailing flank of V shaped slab horizontal plate are by being welded to connect.Horizontal servo electric cylinder 11 is connected with the vertical plate of overhanging adapter plate 10 by four bolts.Horizontal servo electric cylinder bar 38 is threaded connection and coordinates with the tapped bore of fixture block bottom.The rectangular slab of slide block lower end snaps in the Baltimore groove of fixture block, and the through hole of rectangular blocks is concentric with the through hole of fixture block side.Little rotating shaft 35 is through the through hole of rectangular blocks and the through hole of fixture block side.Dovetail furrow slide block 34 freely can rotate around little rotating shaft 35.Dovetail furrow slide block 34 snaps in the dovetail furrow groove of flap, and dovetail furrow slide block 34 can slide in dovetail furrow.The manhole of flap and V shaped slab vertical plate is passed in rotating shaft, and flap 13 can freely rotate around the shaft, and the horizontal plate of flap contacts with nose-gear pillar 3.One end flatbed horizontal of left baffle is fixed on the edge of V shaped slab horizontal plate trailing flank, and makes other end flatbed horizontal forward.The biside plate of front and rear baffle is horizontally fixed on the downside of welding, and makes U-board level towards the right side.Four safety limit switchs are bolted on erecting stage.Sinistral safety limit switch 8 is fixed on the left side of left side board, and dextral safety limit switch 16 is fixed on the right side of right side board, and front and back safety limit switch is arranged on front side and the rear side of front and rear baffle respectively.
The first step, is assemblied in nose-gear on nose-gear assembling test car.First the tire of nose-gear is placed on V-type plate, tire respectively with the horizontal plate of V-type plate and two hang plates tangent, then the pillar of nose-gear and the horizontal plate of rotor plate are close together, concrete assembly drowing is as shown in Figure 1.
Second step, realizes the movement of nose-gear along X-axis, Y-axis and the rotation around Z axis.Owing to having installed cardan wheel on erecting stage four angles, operation push rod moves the movement and rotation that can drive cardan wheel, can be light make assembling car along X-axis, y-axis shift is dynamic and rotate along Z axis, and nose-gear is along with the assembling movement of car along X-axis, Y-axis and the rotation around Z axis.When assembling car and adjusting to correct position, fix cardan wheel by the brake gear of cardan wheel, realize the fixing of whole mechanism.Operating personal operation push rod, can be light move in factory building, turn, is transported to type frame installation site by nose-gear from assembly station, and fixed mechanism, realize transportation function.
3rd step, realizes the movement of nose-gear along Z axis.After nose-gear is carried to installation site, the motion of five servo electric jars can be controlled by operation control housing.The movement of V shaped slab along Z-direction can be realized by the lifting of four vertical servo electric jars, and adjustable amount of movement.Principle of work: the rising of four vertical servo electric jars drives the rising of four spherical nuts, four spherical nuts head on four spherical nut connecting panels risings simultaneously, drive V shaped slab to rise.The decline of four vertical servo electric jars drives the decline of four spherical nuts, simultaneously due to the isostructural deadweight of V shaped slab, makes four spherical nut connecting panels press against four spherical nuts respectively all the time.
4th step, realizes the rotation of nose-gear around X-axis, Y-axis.V-type plate can be realized respectively in X direction, the rotation of Y-direction by the lifting controlling certain two vertical servo electric jar.Principle of work: the lifting of two vertical servo electric jars, drive the rising of two spherical nuts, centre distance then between four spherical nuts changes, spherical nut slides in by circular trough, square groove and realizes the change of centre distance, first spherical nut is fixing can not slide, second spherical nut slides in left and right directions circular trough, realize the motion of left and right directions only, 3rd spherical nut slides in fore-and-aft direction circular trough, realize the motion of left and right directions only, and the 4th spherical nut slides in square groove, the motion of XY plane can be realized.Four spherical nuts are with the use of the rotation realized along X-axis, Y-axis.
5th step, realizes the rotation of pillar along wheel shaft of nose-gear.Its fundamental diagram: by the motion of level of control servo electric jar, drives slide block mechanism to move back and forth.Dovetail furrow slide block can slide in the dovetail furrow of flap.Drive flap to rotate around the axis while dovetail furrow skid, flap rotates and drives the pillar of nose-gear to rotate around wheel shaft, realizes the rotation of pillar along wheel shaft of nose-gear.
Four safety limit switchs are separately fixed on erecting stage; safety limit switch and corresponding baffle plate with the use of, for the safe spacing of V shaped slab all around, preserve to protect operating personal; and prevent the V shaped slab anglec of rotation excessive, cause between parts and bump against.
The device such as motion controller, servo-driver is had in control housing, motion controller is the core of whole control system, it accepts the operating order of operator, controls the power elements such as each servo electric jar and carries out action by predetermined speed, realizes the adjustment to each attitude of equipment in fitting process.Motion controller accepts the location information of each power element, carries out half-closed loop control to the position of each power element, ensures the accurate control of position.Motion controller controls the motion of five axles: servo electric jar is according to the instruction of motion controller, and realize driving nose-gear along the movement of Z-direction and the rotation around X-axis, Y-axis, horizontal servo electric cylinder realizes the rotation of pillar along wheel shaft of nose-gear.Servo electric jar by coder by current servo electric cylinder position feedback to motion controller, realize the half-closed loop control to servo-electric cylinder position, to realize the accurate control to position.
Realize nose-gear by operational test car to transport in assembling test factory building, when can realize the docking of assembling test type frame by controller, nose-gear moves along X-axis, y-axis shift, and rotate around Z axis, pillar is around the rotation of wheel shaft.The movement of nose-gear along Z axis can be realized by the lifting of four vertical servo electric jars, the rotation of nose-gear around X-direction, Y-direction can be realized respectively by the lifting of certain two vertical servo electric jar, drive slide block mechanism and flap can realize the rotation of pillar around wheel shaft of nose-gear by horizontal servo electric cylinder.
Claims (1)
1. an aircraft nose landing gear assembling test car, comprise erecting stage, cardan wheel, push rod, it is characterized in that: also comprise control housing, V shaped slab, vertical plate A, overhanging adapter plate, flap, servo electric jar, slide block mechanism, safety limit switch, control housing is positioned at the outside of vertical plate A on erecting stage, push rod is fixed on vertical plate A outer upper, and cardan wheel is installed in corner, erecting stage bottom surface; Described V shaped slab is fixed on erecting stage middle part, slot is had in the middle of on two plate faces of V shaped slab, V shaped slab quadripolar corners is connected by middle connecting plate and four the vertical servo electric jar ends be fixedly mounted on erecting stage, flap and side shield are all fixed on V shaped slab, and are positioned at V shaped slab side; Slide block mechanism and horizontal servo electric cylinder are mounted between overhanging adapter plate and flap, and safety limit switch is separately fixed between the vertical servo electric jar at two ends, V shaped slab left and right; Described overhanging adapter plate side and V shaped slab are connected, and horizontal servo electric cylinder is connected with the vertical plate B of overhanging adapter plate, and horizontal servo electric cylinder bar coordinates with the tapped bore of fixture block bottom; Described flap is L shape, and flap is connected by rotating shaft with side shield, and have round tube hole in the middle of the vertical section of flap, lower end has dovetail furrow; Described slide block mechanism comprises fixture block and dovetail furrow slide block, the rectangular slab of slide block lower end snaps in the Baltimore groove of fixture block, little rotating shaft is through the through hole of rectangular blocks and the through hole of fixture block side, and dovetail furrow slide block is around little axis of rotation, and dovetail furrow slide block snaps in the dovetail furrow of flap; Described servo electric jar comprises four vertical servo electric jars and a horizontal servo electric cylinder; Four vertical servo electric jars are separately fixed on erecting stage, and spherical nut is installed in the end of four vertical servo electric jar bars, and is fixed by large jam nut and little jam nut; The ball screw thread of four spherical nuts is arranged in the square slotted eye of the circular hole of the first spherical nut connecting panel, the circular slotted eye of the second spherical nut connecting panel, the circular slotted eye of the 3rd spherical nut connecting panel, the 4th spherical nut connecting panel respectively; Four spherical nut connecting panels are connected with the corner of V shaped slab respectively.
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| CN201310384309.0A CN103434655B (en) | 2013-08-29 | 2013-08-29 | A kind of aircraft nose landing gear assembling test car |
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| CN103434655B true CN103434655B (en) | 2015-10-28 |
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| CN105292519B (en) * | 2015-11-11 | 2018-01-05 | 北京特种机械研究所 | A kind of aircraft nose landing gear attaching/detaching apparatus |
| CN105345420B (en) * | 2015-11-11 | 2017-08-08 | 北京特种机械研究所 | A kind of undercarriage attaching/detaching apparatus |
| CN106379392B (en) * | 2016-11-17 | 2019-11-26 | 中航通飞华南飞机工业有限公司 | A kind of aircraft nose landing gear flexible installing and storage dual-purpose apparatus |
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| CN109333474A (en) * | 2018-10-30 | 2019-02-15 | 广西玉柴机器股份有限公司 | A kind of universal support arrangement |
| CN110834739A (en) * | 2019-11-14 | 2020-02-25 | 昌河飞机工业（集团）有限责任公司 | Undercarriage moving installation device and method |
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