JPH03211195A - Aircraft wheeled leg transfer exchange device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is an aircraft repair shop, etc. in which a wheeled landing gear is removed from an aircraft fuselage, transported to a maintenance site, and the wheeled landing gear that has been serviced is removed from the aircraft body. This invention relates to a wheeled aircraft landing gear transport/exchange device that is used to transport and attach the landing gear to the lower part of the aircraft's aircraft body.

[Conventional technology]

Nowadays, aircraft are getting larger and have a large number of wheeled legs (and the weight of each wheeled leg is also quite large).In aircraft maintenance shops, wheeled legs are removed from the aircraft fuselage one by one. When it is removed and transported to a maintenance site, the fuselage 17 of the aircraft 16 is supported by a number of support stands 18 as shown in FIG. 14, and then the wheeled legs 13 shown in FIG. Aircraft 16 not shown
The trees are removed one by one from the fuselage 17 and transported to a maintenance site using a transport and exchange device. Furthermore, after completing the maintenance of the wheeled leg 13, the wheeled leg ■3 is transported to the lower part of the wheeled leg attachment position on the fuselage 17 by a transport device,
Attaching the legs.

Conventionally, as a wheeled leg transport/exchange device, (1) as shown in FIG. A conveyor exchange device in which a groove-shaped loading platform 22 is supported by a hydraulic jack 2021 and a pantry car 23 is connected to the front part of the truck 19; (2) a driver's seat 24 and an operation control device 25 as shown in FIG. 11; The upper end of the fork elevating guide frame 3 is pivotally attached to the front upper end of a frame 27 in a self-propelled vehicle 26 with a horizontal shaft 28 extending in the left-right direction, and a guide frame inclination angle adjustment cylinder 29 that extends the front part of the frame 27 in the front-rear direction;
A fork 8 is connected to the guide frame 3 via a fork 8 and is moved up and down by a lifting drive device (not shown).
There is a known conveyance/exchange device equipped with a.

When transporting the wheeled legs 13 removed from the fuselage 17 back and forth between the fuselage 17 and the maintenance site using the transport exchange device (1) above, a transport vehicle is used as shown in FIG. A wheeled leg 13 is placed on a loading platform 22, and a cart 19 is moved and transported by a battery car 23.

In addition, when attaching and detaching the wheeled legs 13 to the fuselage 17,
It is necessary to adjust the X direction (back and forth direction), X direction (left and right direction), two directions (up and down direction), and the inclination of the wheeled legs 13. When adjusting the position in the The cart 19 is stopped at an approximate position by the car 23, and then, as shown in the 10th time, the worker uses the adjustment lever 56 to manually finely adjust the position of the cart 19.

In addition, when adjusting the position in the X direction, that is, the vertical direction, as shown in FIG.
The trolley 19 is placed on the platform, and the approximate level of the wheeled leg 13 is adjusted by the expansion and contraction of the underground cylinder 32, and then the wheeled leg 13 is adjusted by the simultaneous expansion and contraction of the front hydraulic jack 20 and the rear hydraulic jack 21. The level is being fine-tuned.

Furthermore, when adjusting the inclination of the wheeled legs 13, as shown in FIG.
The inclination of the wheeled leg 13 is adjusted eight times.

[Problem to be solved by the invention]

In the case of the wheeled leg transport/exchange device fl), there is a problem in that it takes a long time and labor to roughly and finely adjust the position of the wheeled leg.

Also, in the case of the wheeled leg conveyance/exchange device (2) above, the position of the wheeled leg in the X direction and the X direction must be adjusted.
In addition, since the fork 8 is placed ahead of the front wheels of the self-propelled vehicle 26, when a heavy wheeled leg 13 is placed on the fork 8, the center of gravity of the loaded self-propelled vehicle moves forward, causing an accident. It becomes stable.

The present invention solves the problems of the conventional wheeled leg transport and exchange device, and facilitates and quickly adjusts the position in the x, y, and X directions and the inclination when removing and attaching the wheeled leg. It is an object of the present invention to provide a wheeled aircraft leg transfer/change device that can perform the following steps.

[Means to solve the problem]

In order to achieve the above object, in the aircraft wheeled leg transfer/exchange device of the present invention, a fork elevating guide frame 3 is attached to a horizontal guide portion 2 provided on a bogie body 1 equipped with wheels for traveling in any direction. A guide roller 4 provided at the lower part of the guide frame 3 is fitted, and the upper part of the guide frame 3 and the truck body 1 are connected via an inclined link 5. The guide frame 3 is connected to the intermediate portion via a telescopic cylinder 6 for adjusting the inclination angle of the guide frame, and a fork 8 is attached to the guide frame 3, which is moved up and down by a lift drive device 7.

In addition, in order to be able to easily move the conveyor exchange device in any direction and to escape sudden drops in load, an air skater 9 for floating the conveyor vehicle that injects air downward is installed on the trolley body 1.
Attach to.

Furthermore, in order to be able to transport the wheeled legs in a stable state, a plurality of telescoping support devices 1 are provided on the trolley 11 having fork insertion holes 10 into which the forks of the transport device are inserted.
The lower part of 2 is fixed, and the upper part of the telescoping support device 12 is fixed,
A gripper 15 that grips the wheel shaft support arm 14 of the wheeled leg 13 and can be opened and closed is attached.

[For production]

When the telescopic cylinder 6 for adjusting the guide frame inclination angle is extended from the state where the guide frame 3 for raising and lowering the fork is vertically arranged, the guide frame 3 and the fork 8
is tilted, and when the elevating drive device 7 is driven, the fork 8 is moved up and down, and when compressed air is injected from the carrier vehicle floating air skater 9, the carrier device 30 is lifted up. Furthermore, the level of the wheeled leg 13 is finely adjusted by extending and contracting the telescopic support device 12 while holding the wheel shaft support arm 14 of the wheeled leg 13 with the gripping tool 15.

〔Example〕

Next, the present invention will be explained in detail using illustrated examples.

1 to 8 show an embodiment of the present invention, in which the rear end portions of a pair of side frames 34 extending parallel to each other in the front-rear direction are integrally connected to both ends of a rear frame 35. A truck main body 1 is constructed, and wheels 36 for running in any direction are attached to both left and right sides of the front portion and left and right sides of the rear portion of the truck body 1, and are rotated in forward and reverse directions by a drive device with a brake (not shown). and a plurality of transport vehicle floating air skaters 9 that inject air downward are attached to each side frame 34 at intervals in the front-rear direction,
An air pressure control device (not shown) that controls the compressed air supplied to the air skater 9 from the outside is connected to the trolley body 1.
Furthermore, moving handles 37 are fixed to the front and rear parts of the trolley body 1.

A horizontal guide part 2 consisting of a horizontal long hole extending from the middle part in the longitudinal direction to near the rear frame 35 is provided inside each of the side frames 34, and is provided on both left and right sides of the lower part of the guide frame 3 for raising and lowering the fork. The guide roller 4 attached to the frame is fitted into the horizontal guide part 2, and the upper part of the guide frame 3 and the rear part of the truck body 1 are connected via an inclined link 5 which is inclined upwardly and forwardly. The intermediate portion of the guide frame 3 in the vertical direction and the intermediate portion of the inclined link 5 are connected via a telescopic cylinder 6 for adjusting the guide frame inclination angle, which is a hydraulic cylinder, and further extends parallel to the guide frame 3. The lower end of a lifting drive device 7 consisting of a hydraulic cylinder is connected to the guide frame 3, and a support sheave 38 is attached to the upper end of a piston rod in the drive device 7.

The fork body 39, which is moved up and down along the guide frame 3, is slidably attached to the guide frame 3 and extends on both left and right sides of the lower end of the fork body 39 in a direction perpendicular to the fork body 39. The base end portions of the fork arms 40 are fixed together, and the fork body 39 and the fork arms 40 constitute the fork 8.

The middle part of the lifting strip 41 made of a chain or wire lobe is wrapped around the support sheave 38, and the strip 41 is wrapped around the support sheave 38.
1 is connected to the guide frame 3, and the other end of the strip 41 is connected to the fork body 39, and when the elevating drive device 7 is extended or contracted, the fork 8
is moved up and down along the guide frame 3. Further, a conveying device 30 is constituted by the truck body 1 and each part supported thereby.

Support members 43 in the form of downward opening grooves extending in the front-rear direction are fixed by welding to both left and right sides of the front and rear parts of the upper surface of the truck 11 equipped with running wheels 42, and the support members 43 and the upper surface of the truck 11 Fork insertion hole 10
is formed, and a pair of lower links 44 are attached to the support member 43.
．． 45 is pivotally connected, the upper end of one lower link 44 and the lower end of the upper link 48 are pivotally connected to the right female threaded member 46, and the upper end of the other lower link 45 is pivotally connected to the left female threaded member 47. The lower end of the upper link 49 is pivotally connected.

A telescopic screw punch 50 having a right female thread and a left female screw is screwed into the right female thread member 46 and the left female thread member 47, and a handle 51 for rotating the screw punch is attached to the screw punch 50, and each of the upper links 48 The upper end of .49 is pivotally connected to the lower clamp member 52;
One end of an upper clamp member 53 is pivotally attached to one end;
The other end of each lower clamp member 52, 53 is detachably connected by a bolt 54.

A vertical rod 59 is inserted into a vertical hole 58 in a lower guide member 57 that is rotatably fitted into the center of the telescopic screw punch 50.
is inserted into the support member 43, and the lower end of the guide rod 59 is connected to the support member 43.
The upper part of the guide rod 59 is slidably inserted into a vertical hole 61 in the lower part of an upper guide member 60 whose upper part is fixed to the lower clamp member 52.

The links 4.4, 45, 48. 49, the female screw members 46.47, and the screw punch with handle 50 constitute a pantograph-like telescopic support device 12, and the lower clamp member 52 and the upper clamp member 53 and bolt 54
A gripping tool 15 is constituted by the gripping tool 15, and a gripping tool-equipped cart 55 is constituted by the cart 11 and the gripping tool 15 attached to the cart 11 so as to be movable up and down via the telescopic support device 12.

As the wheels 36 for traveling in any direction, for example, Japanese Patent Publication No. 55
The one shown in Japanese Patent No. 50830 may be used, or a wheel support member rotated about a vertical axis by a swing drive device may be attached to the bogie body 1, and traveling wheels may be attached to the wheel support member. They may be attached to form wheels for running in any direction.

The wheeled landing gear 13 is attached to the aircraft 1 using the device of the above embodiment.
When removing the fork 8 from the body 17 of the fork 8, as shown in FIG. , with the gripper 15 opened, the lifting drive device 7 moves the gripper-equipped cart 55 upwardly via the fork 8, and the telescopic support device 12 adjusts the level of the gripper 15, allowing each gripper to be moved upwardly. After gripping each wheel shaft support arm 14 of the wheeled leg 13 with the tool 15 and removing the wheeled leg 13 from the body 17, the guide frame 3.
While gradually inclining the wheeled leg 13 via the fork 8 and the cart 55 with a gripper, the lifting drive device 7 gradually lowers the wheeled leg 13 via the fork 8 and the cart 55 with a gripper. . In this case, the transport device 3o is finely adjusted in the X and Y directions so that the wheeled legs 13 do not hit the protrusion of the aircraft body 17 near the leg installation position. Next, the wheeled leg 13 is tilted by the extension operation of the telescopic cylinder 6 to such an extent that the wheeled leg 13 can pass through the lower part of the body 17.

In addition, a conveyor device 30 and a cart 55 with a gripper are maintained.
When attaching the wheeled legs 13 that have been conveyed by The wheeled leg 13 is gradually raised through the upper part of the wheeled leg 13 to gradually approach the leg receiving hole of the fuselage 17.

Next, check whether the upper mounting part of the wheeled leg 13 is deviated from the leg mounting part of the aircraft body 17, or whether it is in the correct position.
Confirmed by visual inspection. If it is deviated in the X or Y direction, make a rough adjustment by driving the wheels 36 for traveling in any direction, and then jet compressed air downward from the air skater 9 to levitate the conveyor device 30. In this state, the operator can finely adjust the position in the X9Y directions by grasping the moving handle 37 and pressing the transport device, and if the deviation in the x and y directions is minute, the fine adjustment can be made by the above operations. only.

Furthermore, if the wheeled leg 13 has an angular deviation, the telescopic cylinder 6 expands and retracts the guide frame 3. Wheeled leg 13 via fork 8 and cart 55 with gripper
The wheeled legs 13 are finely adjusted in the Z direction by adjusting the angle of the telescopic support devices 12, and then rotating the telescopic screws 50 of each telescopic support device 12 to extend the telescopic support devices 12. The upper mounting portion of the attached leg 13 is attached to the fuselage 17.

When carrying out this invention, as a means for moving the fork 8 up and down, a lifting screw rotated by a lifting motor is arranged so as to extend in the longitudinal direction of the guide frame 3. A female screw member that is rotatably attached and screwed to the screw punch is attached to the frame 8,
It is also possible to employ means for moving the fork 8 up and down by rotating a screw punch using the motor. Also, the telescopic support device 12
As the gripping tool 15, any structure other than that shown in the drawings may be used. For example, as the telescoping support device 12, a hydraulic cylinder may be used.

The lower ends of each of the lower links 44, 45 may be pivotally connected to a bracket provided on a plywood, and the plywood may be fixed to the fork arm 40 of the fork 8 with bolts or the like. Also, the telescopic cylinder may be a hydraulic cylinder. Alternatively, an electric cylinder may be used, and furthermore, the conveying device 30 may be operated manually or by remote control.

In order to detect the load acting on the fork 8, it is preferable to provide a load sensor at an appropriate position on the transport device 30, and to attach a load display device connected to the load sensor to the truck body 1 or the guide frame 3. If the transport device 30 is operated while looking at the load display device, the wheeled legs 13
When the vehicle collides with the aircraft body 17 and an overload is applied, this can be detected, so safety can be ensured.

The load sensor may be provided in the upper part of the fork insertion hole 10, and when a hydraulic cylinder is used as the lifting drive device 7, a load sensor that detects the hydraulic pressure of the hydraulic cylinder may be used. good.

Furthermore, a horizontal member having a side opening groove-shaped cross section may be fixed to the inner surface of the side frame 34, and the groove of the horizontal member may be used as a horizontal guide portion.

〔Effect of the invention〕

Since this invention is configured as described above, it produces the effects described below.

By telescoping the extendable cylinder 6, the fork 8 can be easily tilted at any angle via the fork elevating guide frame 3, and by driving the elevating drive device 7, the fork 8 can be easily raised and lowered. At the same time, the transport device 30 can be made to travel in any direction by driving the wheels provided on the bogie body 1, so that the wheeled legs 13 can be attached and detached from the body 17 of the aircraft 16, and the The wheeled legs 13 can be easily, quickly and safely transported between the lower part of the fuselage 17 and the maintenance site, and furthermore, even if the guide frame 3 and the loaded claw 8 are tilted,
Since the center of gravity of the transport device 30 does not deviate significantly forward, the transport device 30 can be run in a stable state.

Furthermore, by jetting compressed air downward from the carrier vehicle floating air skater 9, the carrier device 30 can be levitated, so the position of the carrier device 30 in the longitudinal and lateral directions can be easily adjusted. The downward load can be released. Furthermore, lower portions of a plurality of telescoping support devices 12 are fixed to a truck 11 having fork insertion holes 10, and wheeled legs 1 are attached to the upper portions of the telescoping support devices 12.
By attaching a gripper 15 that can be opened and closed to grip the wheel shaft support arm 14 in 3, the wheeled leg 13 can be transported in a stable state, and the level of the wheeled leg 13 can be easily adjusted by the telescoping support device 12. can be fine-tuned.

[Brief explanation of drawings]

1 to 8 show an embodiment of the present invention, in which FIG. 1 is a side view of the conveyance exchange device, FIG. 2 is a front view thereof, and FIG. 3 is a plan view of the conveyance exchange device. , Fig. 4 is a longitudinal side view thereof, Fig. 5 is a side view of the trolley with gripping tools, Fig. 6 is a front view thereof, and Fig. 7 is a mounting of the wheeled legs on the conveyance exchange device via the trolley with gripping tools. A longitudinal side view showing a state in which
FIG. 8 is a front view thereof. Fig. 9 is a side view showing an example of a conventional wheeled leg transport/exchange device, Fig. 10 is a side view showing a state in which the wheeled leg is supported in an inclined state by the transport/exchange device, and Fig. 11 is a side view showing an example of a conventional wheeled leg transport/exchange device. It is a side view which shows another example of a support leg conveyance exchange device. Fig. 12 is a schematic front view showing a part of the aircraft, Fig. 13 is a schematic perspective view showing the wheeled legs of the aircraft, and Fig. 14 shows the aircraft body supported by a support base in order to attach and detach the wheeled legs. It is a schematic side view which shows a state. In the figure, ■ is the main body of the truck, 2 is the horizontal guide section, 3 is the guide frame for lifting the fork, 4 is the guide roller, 5 is the tilting link, 6 is the telescopic cylinder for adjusting the guide frame inclination angle, 7 is the lifting drive device, 8 is a fork, 9 is an air skater for floating the transport vehicle, 10 is a fork insertion hole, 11
1 is a trolley, 12 is a telescopic support device, 13 is a wheeled leg, 1
4 is a wheel shaft support arm, 15 is a gripping tool, 16 is an aircraft,
17 is a fuselage, 30 is a transport device, 34 is a side frame, 3
5 is a rear frame, 36 is a wheel for traveling in any direction, 37 is a handle for movement, 38 is a support sheave, 39 is a fork body,
40 is a fork arm, 41 is a lifting strip, 42 is a running wheel, 43 is a support member, 5° is a telescopic screw screw, 51 is a handle for rotating the screw screw, 52 is a lower clamp member, 53 is an upper clamp member, 54 is a bolt, and 55 is a cart with a gripper. ! 11

Claims (3)

[Claims] (1) A guide roller 4 provided at the lower part of a guide frame 3 for raising and lowering the fork is fitted into a horizontal guide portion 2 provided on a trolley body 1 equipped with wheels for traveling in any direction,
The upper part of the guide frame 3 and the truck main body 1 are connected via an inclined link 5, and a vertically intermediate portion of the guide frame 3 and an intermediate portion of the inclined link 5 are provided with a telescopic cylinder 6 for adjusting the guide frame inclination angle. A wheeled aircraft leg transport/exchange device in which a fork 8 is connected to the guide frame 3 through the guide frame 3 and is moved up and down by a lifting drive device 7. (2) The aircraft wheeled leg transport and exchange device according to claim 1, wherein an air skater 9 for floating the transport vehicle that injects compressed air downward is attached to the trolley body 1. (3) The lower portions of a plurality of telescoping support devices 12 are fixed to the trolley 11 having the fork insertion hole 10, and the upper portion of the telescoping support devices 12 is opened and closed to grip the wheel axle support arm 14 of the wheeled leg 13. 3. The aircraft wheeled landing gear transport and change device according to claim 1, further comprising a flexible gripper (15).