JPH0860851A - Maintenance work floor for airplane - Google Patents

Abstract

PURPOSE: To increase workability, by forming an extensible lifting trough supported by traveling carriers at both sides and providing auxiliary working floors so as to be transferable in the width direction of the trough to be adjustable in accordance with the magnitude of airplane. CONSTITUTION: A lifting trough 3 supported by mobile carriers 1a, 2a and 1b, 2b is constituted so as to be longitudinally extensible and auxiliary working decks 10 are installed to be movable toward the airplane. When the distance between the mobile carriers is widened in accordance with the magnitude of airplane 6, the trough is extended or contracted and the distance from the airplane is adjusted by stretching or retracting the working deck 10 so that the transferable maintenance work deck of the airplane 6 can be applied for various sizes of planes. In this way, investment cost is reduced and the workability is increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a maintenance work floor of an aircraft, which is mainly applied to inspection and repair of an aircraft body.

[0002]

2. Description of the Related Art FIG. 3 is an explanatory view of a conventional work floor for maintenance of an aircraft mainly used for inspection and repair of the fuselage of the aircraft. In the figure, a conventional work floor for maintenance of an aircraft is installed in a hangar, and a nose-side traveling carriage 1 and a tail-side traveling carriage 2 are provided on the left and right sides of the loaded aircraft 6, respectively.
And the work elevating and lowering troughs 18 are synchronously moved up and down so as to be held horizontally via an elevating device (hoist) (not shown) provided in each of the traveling carriages 1 and 2. Is suspended. The traveling carriages 1 and 2 on both sides of the aircraft 6 are interlocked with each other so that the traveling carriages 1 and 2 can independently come into contact with and separate from the fuselage of the aircraft 6 which is carried in the middle.
It is configured to be able to move through.

When inspecting or repairing the aircraft 6 using this work floor, first, the left-side traveling carriages 1 and 2 and the right-side traveling carriages 1 and 2 are respectively retracted to predetermined positions and suspended. By raising the lifting trough 18 to the uppermost position, the aircraft 6 is carried into the air space formed in the middle and stopped at a predetermined position. Subsequently, the traveling carriages 1 and 2 on both sides are brought closer to the body side of the aircraft 6, and the elevating trough 18 is lowered according to the body to engage with the side wall of the body. The worker moves using the lifting trough 18 as a scaffold to inspect and repair the machine body.

[0004]

In the conventional work floor for maintenance of an aircraft as described above, the traveling carriages 1 and 2 and the elevating trough 18 are substantially dedicated to the body of an aircraft 6 of a specific model. Since it is made in a general way, it is not versatile, and when a larger aircraft 6 than before is carried in, the work elevating trough 18 does not reach the tip of the aircraft, for example inspection and repair of the nose etc. Can't work. For this reason, measures have been taken such as adding an auxiliary work floor 17 for maintenance work such as a nose that lacks scaffolding, which not only increases equipment costs but also requires time for preparatory work and structure. Work efficiency decreases due to the above problems,
There is also a problem that the safety of the most important worker is impaired.

[0005]

A workbench for maintenance of an aircraft according to the present invention is intended to solve the above-mentioned problems, and is used as a scaffold between a plurality of traveling carriages provided on the aircraft side of the aircraft so as to be self-propelled. In a maintenance work floor of an aircraft that is lifted up and down with the lifting troughs stretched over, the lifting troughs are provided so as to be capable of expanding and contracting according to the distance between the traveling carriages.

Further, the work floor for maintenance of an aircraft according to the present invention is used for maintenance of an aircraft in which an elevating trough for scaffolding is stretched between a plurality of traveling carriages provided on the aircraft side so as to be self-propelled. In the working floor, the elevating trough is provided so as to be capable of expanding and contracting in accordance with the distance between the traveling carriages, and an auxiliary working floor is attached to the elevating trough so that it can be brought into contact with and separated from the aircraft body. .

[0007]

That is, in the maintenance work floor of the aircraft according to the present invention, the lifting trough for scaffolding is stretched between a plurality of traveling carriages provided on the machine side of the aircraft so as to be self-propelled. An elevating trough on the maintenance work floor is provided so as to be capable of expanding and contracting according to the distance between the traveling carriages, and the elevating trough for scaffolding can be set by appropriately expanding and contracting according to the length of the machine body. This makes it possible to handle a plurality of types of aircraft with one maintenance work floor.

Further, in the maintenance floor of the aircraft according to the present invention, the lifting trough for scaffolding is stretched between a plurality of traveling carriages provided on the aircraft side of the aircraft so as to be self-propelled. An elevating trough on the maintenance work floor is provided so that it can expand and contract according to the distance between the traveling carriages, and an auxiliary work floor is attached to the elevating trough so that it can move toward and away from the aircraft body. Can be appropriately expanded and contracted in accordance with the length of the airframe, and the auxiliary work floor can be set toward and away from the airframe of the aircraft. This makes it possible to handle a plurality of types of aircraft with one maintenance work floor.

[0009]

1 and 2 are explanatory views of a work floor for maintenance of an aircraft according to an embodiment of the present invention. In the figure, the work floor for maintenance of the aircraft according to the present embodiment is mainly used for inspection and repair of the fuselage of the aircraft, and is installed in the hangar as shown in the figure and on both left and right sides of the loaded aircraft 6. Are provided with traveling carriages 1a and 1b on the nose side and traveling carriages 2a and 2b on the tail side, respectively, and are horizontally moved through an unillustrated lifting device (hoist) provided in each traveling carriage 1a to 2b. The lifting trough 3 for work is suspended so as to rise and fall synchronously so as to be kept. The traveling carriages 1a to 2b on both sides of the aircraft 6 are capable of moving independently in the lateral direction of the aircraft via the traveling wheels 7 in such a manner that they can independently come into contact with and separate from the fuselage of the aircraft 6 carried in the middle. It is configured.

In addition, in order to enhance versatility by allowing a plurality of aircraft of different captains carried into the hangar to be accommodated on the work floor, the lifting trough 3 as shown in FIG.
Has a telescopic structure in which a substantially central portion is formed by an outer cylinder 4 and an inner cylinder 5, and the elevating trough 3 can be appropriately expanded and contracted in the longitudinal direction by laterally moving the traveling carriages 1a to 2b. That is, the traveling carriage 1a-
2b supports the elevating trough 3 and travels in the lateral direction of the aircraft 6 so as to approach and separate from the aircraft 6 and at least the nose-side traveling carriages 1a, 1b also travel in the longitudinal direction of the aircraft. You can do it. To convert the traveling directions of the traveling vehicles 1a and 1b, the traveling wheels 7 arranged orthogonal to each other are switched to the ground through an elevating means (not shown) so as to travel in the front-rear, left-right directions or the traveling wheels 7 are not shown. Various types are conceivable, for example, steering the vehicle in a desired direction through the steering device to drive the vehicle. The traveling vehicles 2a and 2b on the tail side may also be configured to be able to travel by moving in the front-rear direction of the machine body. The traveling carriages 1a to 2b forming a pair having such a structure are moved in correspondence with the body of the aircraft 6 carried into a predetermined position, and after setting the length of the lifting trough 3 for work, they are brought close to the body. As a result, it is possible to inspect and repair even a plurality of types of aircraft 6 having different body lengths.

The elevating trough 3 is constructed so that its central portion can be expanded and contracted, and as shown in FIG. 2, an inner cylinder 5 having a guide roller 8 axially mounted along an outer cylinder 4 fixed at a longitudinal position.
Can be moved. Lifting trough 3 for work
The maximum amount of expansion and contraction is 2S, and it can be set in a state in which only one side is expanded. Further, the inner cylinder 5 includes a work floor 10 fixedly supported by an upper swing arm 9 and a work floor 12 fixedly supported by a lower swing arm 11. By the operation of various types of expansion and contraction drive devices such as a hydraulic cylinder 14 rotatably supported by a bracket 13 or a linear motor cylinder,
It can be moved downwards. That is, by extending the hydraulic cylinder 14, the work floors 10, 12 are
Can be set horizontally by projecting to the fuselage side, and will be used as an auxiliary scaffold for inspection and repair work on the fuselage of the aircraft 6. Further, by contracting the hydraulic cylinder 14, the upper and lower work floors 10 and 12 can be housed in the frame of the inner cylinder 5, respectively. Reference numeral 15 in the figure is a cushioning member formed of a rubber material or the like and attached to the front ends of the work floors 10 and 12.
It functions to prevent damage to the fuselage of the fuselage caused by contact between 0 and 12 and the fuselage. Further, 16 is a crossing board, which is designed to improve the safety of the worker during walking and moving by closing the gap formed between the work floor 10 or the work floor 12.

When the aircraft 6 is to be inspected and repaired using the work floor, first, the lifting trough 3 is to be loaded before loading the aircraft.
While moving up to the top, each traveling carriage 1a-2
b to the predetermined positions, and the aircraft 6
Is formed in advance, and in this state, the aircraft 6 is carried to a predetermined position in the hangar and stopped. Then, the nose-side traveling carriages 1a and 1b are moved in the front-rear direction of the machine body to expand and contract the elevating trough 3,
After the elevating trough 3 is set to a length corresponding to the machine body, the traveling carriages 1a to 2b are moved to the machine body in association with each other for each pair to adjust the position and suspend the elevating trough 3
Lower to the height corresponding to the body. For example, when the machine body is long A, the elevating trough 3 is extended and the work floors 10 and 12 which are rocked are set horizontally, and then the traveling carriages 1a to 2 are set.
Bring b closer to the aircraft. Further, when the machine body is short B, the lifting trough 3 is reduced and the position is set as in the case where the machine body is long.

In the conventional maintenance floor of an aircraft,
Poor versatility because traveling trolleys, lifting troughs, etc. are made almost exclusively corresponding to the aircraft of a certain specific type of aircraft, and are used for work when a larger aircraft than before is carried in. The elevating trough does not reach the tip of the airframe, and it is impossible to inspect or repair the nose, for example. For this reason, measures such as adding an auxiliary work floor for maintenance work such as the nose with insufficient footing are taken,
Not only the equipment cost rises, but also the preparation work takes time, the work efficiency decreases due to structural defects, and the safety of the most important worker is impaired, but there are problems. In the maintenance work floor of the present aircraft, two sets of traveling carriages 1a to 2b arranged on both sides of the body of the aircraft 6 are provided with lifting hoisting troughs for work in order to cope with these problems and increase safety and versatility. The guide roller 8 is constructed such that 18 is suspended and brought into contact with and separated from the machine body, and that a substantially central portion of the elevating trough 3 is telescopically formed so as to expand and contract, and is rolled and contacted with the rectangular outer cylinder 4. It is possible to set the working floors 10 and 12 for the auxiliary scaffolding to the storage position and the horizontal position for work by swinging the inner cylinder 5 that expands and contracts in the longitudinal direction through the upper and lower sides through the traveling carriage 1a to. At least one side of 2b was loaded It is configured so that it can also move in the front-back direction of the body, and the elevating and lowering trough 3 for work is set by appropriately expanding and contracting in the longitudinal direction in the front-rear direction of the machine body, and the work floors 10 and 12 for auxiliary scaffolding are used as the machine body Two types or a plurality of types of aircraft 6 that can be brought into contact with and separated from each other by expanding and contracting the work elevating trough 3 according to the length of the body of the aircraft 6 that is carried into the hangar for inspection, repair, etc. Can be supported. As a result, it is not necessary to provide an auxiliary work floor for the nose even when the airframe is long, and the construction cost of the maintenance facility is reduced. In addition, it is possible to shorten the time required for inspection and repair work including preparation of the scaffold, and it is possible to significantly improve the safety of workers involved in walking and moving. Moreover, the facility cost can be reduced and the workability can be significantly improved.

The aircraft maintenance work floor according to the present invention is not limited to the above-mentioned embodiments, and various modifications can be made without departing from the scope of the present invention.

[0015]

The maintenance work floor of the aircraft according to the present invention is configured as described above, and since one maintenance work floor can be used for a plurality of types of aircraft, the body is long. Even in such a case, it is not necessary to provide an auxiliary work floor and the like, the facility cost is reduced, the time required for the maintenance work of the aircraft is shortened, and the safety of the worker is significantly improved.

[Brief description of drawings]

FIG. 1A is a front view of a maintenance work floor of an aircraft according to an embodiment of the present invention, and FIG. 1B is a plan view thereof.

2 (a) is a sectional view of the lifting trough, FIG. 2 (b) is a sectional view taken along the line BB in FIG. 2 (a), and FIG. 2 (c) is a sectional view in FIG. 2 (a). FIG. 6 is a cross-sectional view taken along the arrow C.

FIG. 3 (a) is a front view of a conventional maintenance work floor of an aircraft, and FIG. 3 (b) is an operation explanatory view thereof.

[Explanation of reference symbols] 1a traveling carriage 1b traveling carriage 2a traveling carriage 2b traveling carriage 3 telescopic lifting trough 4 outer cylinder 5 inner cylinder 6 aircraft 7 traveling wheel 8 guide roller 9 upper swing arm 10 working floor 11 lower side Swing arm 12 Working floor 13 Bracket 14 Hydraulic cylinder (extendable drive device) 15 Cushion member 16 Cross plate

Claims (2)

[Claims] 1. A work platform for maintenance of an aircraft, in which an elevating trough for scaffolding is stretched between a plurality of traveling bogies provided on the machine side of an aircraft so as to be self-propelled. A work floor for maintenance of an aircraft, which is provided so as to be capable of expanding and contracting according to the space between. 2. The work floor for maintenance of an aircraft according to claim 1, wherein an auxiliary work floor is attached to the lifting trough so as to be able to approach and separate from a body of the aircraft.