Arrangement for loading a cargo compartment, in particular that of an aircraft, with piece goods

• US 4,984,756 A
• Filed: 01/12/1989
• Issued: 01/15/1991
• Est. Priority Date: 05/12/1986
• Status: Expired due to Term

• Current Assignee: Scandinavian Bellyloading Company
• Original Assignee: Scandanavian Bellyloading Company AB
• Inventors: Anders, Helmner
• Primary Examiner(s): BAREFOOT, GALEN L
• Application Number:
  US07/322,477
• Time in Patent Office: 733 Days
• Field of Search: 244/137.1, 244/118.1, 414/527, 414/528, 414/510, 414/514, 414/515, 414/521, 198/750, 198/496, 198/827, 198/840
• US Class Current: 244/137.1
• CPC Class Codes: B60P 1/365 the chains or belts being fixed to a rigid pusher plate other charging and discharging devices with pusher plates B60P1/006
• CPC Class Codes: B64C 1/22 Other structures integral with fuselages to facilitate loading , e.g. cargo bays, cranes
• CPC Class Codes: B64D 9/003 Devices for retaining pallets or freight containers securing freight containers on vehicles B60P7/00
• CPC Class Codes: B65G 15/62 Guides for sliding belts
• CPC Class Codes: B65G 2201/02 Articles
• CPC Class Codes: B65G 35/04 comprising a flexible load carrier, e.g. a belt, which is wound up at one end and paid out at the other reciprocating belt conveyors B65G25/06
• CPC Class Codes: Y02T 50/40 Weight reduction

Abstract

An arrangement for loading of a cargo compartment (3), in particular that of an aircraft fuselage (1), with piece goods, is proposed, consisting of a conveying device (9) in the form of a number of high-tensile belts (10) located at intervals from one another and which are provided with a carpet-like conveying surface (18), for instance in nylon fabric, in that section of them which covers the cargo area of the cargo compartment (3) in the fully-loaded position. A rear cargo wall (23) fixed to the belts (10) provides the rear stowage room limit for the goods transported. Loading and unloading can be performed by means of movement backwards and fowards of the belts (10). Since tensile loadings are concentrated exclusively in the belts (10), reversal can be performed in the vicinity of the loading aperture (5) of the cargo compartment (3) on a thin guide section located near the floor, which can be designed to accord with any contour of the floor (14) of the cargo compartment (3). There thus results in a design for the conveying device (9) in the form of a carpet which fluidly adapts itself to any contour on which the goods transported can be safely and reliably conveyed into and out of the cargo in compartment (3).

Claims

1. Arrangement for loading a cargo compartment (3) of an aircraft having a curved fuselage floor with piece goods, with at least one conveying device (9), able to be moved by a motor from a loading aperture (5) of an aircraft cargo compartment (3) outwardly in a direction toward its opposite end (6) and back,

which device covers the curved surface of the aircraft fuselage floor (14) of the cargo compartment (3), and by means of which piece goods placed on the conveying device (9) in the region of the loading aperture (5) can be conveyed away from the loading aperture (5) into the cargo compartment (3) and back in the direction of the loading aperture (5) during unloading,

which device comprises a plurality of high-tensile flexible tensioning elements (belts 10), disposed adjacently to each other, which are held at the end (6) of the cargo compartment (3) opposite the loading aperture (5),

which device features in a portion at least approximately equivalent to the depth of the cargo compartment (3) a carpetlike conveying surface (18) of a flexible textile material, and

which device is reversed over a plurality of rotatable reversing rolls (84) arranged in the area of the loading aperture (5),

characterized in that

the reversing rolls (84) are fixed to a guide profile (13) arranged between the upper and lower portions of the conveying device (9), said guide profile being curved to conform the guide profile (13) to, and the conveying surface (18) being curved to conform to, the curved surface of the aircraft fuselage floor (14) of the cargo compartment (3),

the motor drive (8) for the conveying device (9) is positioned in the area of the end (6) of the conveying compartment (3) opposite the loading aperture (5), and

the guide profile (13) is supported against the tensile stress of the conveying device (9) at its side opposite to the reversing rolls (84) by a slide plate (96;

143) supported against the drive (8) at the opposite end.

2. Arrangement in accordance with claim 1, characterised in that the belts (10) in any case in a functional respect are formed as endless belts, which are reversed over rollers (11) at the end (6) of the cargo compartment (3) opposite the loading aperture (5).

3. Arrangement in accordance with claim 2, characterised in that the belts (10) are formed for a positive locking motive drive, for example, are provided with drive recesses or are formed as toothed belts.

4. Arrangement in accordance with claim 1, characterised in that there is disposed on the belts (10) in the region of the rear end of the conveying surface (18) as seen in the loading direction (arrow 19), a portion of the conveying device (9) forming a loading rear wall (23).

5. Arrangement in accordance with claim 4, characterised in that the rear cargo wall (23;

23a) is secured against tipping by way of lateral extension elements (25;

25a) with support elements (support rollers 27,

     28) disposed at intervals from each other in the direction of motion (arrows 19,

     20), which rollers run on slide rails (29) on the lateral walls (15) of the cargo compartment (3).

6. Arrangement in accordance with claim 1, characterised in that the slide plate (96;

143) following the rear edge (17) of the guide section (13) features a surface having good sliding properties, such as of slideable plastic material like tetra fluor carbon (Teflon), and extends at least over half the depth, preferably over the entire depth, of the cargo compartment (3).

7. Arrangement in accordance with claim 6, characterised in that the slide plate (96;

143) directly supports the guide profile (13) on the side opposite the reversing edge (16).

8. Arrangement according to claim 6, characterized in that said cargo compartment (3) has side walls (15) mounting sectional rails (31;

31a) and the slide plate (96;

143) is attached to the sectional rails (31;

31a) of the aircraft on the side walls (15) of the cargo compartment (3).

9. Arrangement in accordance with claim 8, characterised in that the slide plate (143) is supported in a suspended manner above the floor support structure (145) of the cargo compartment (3) and forms the floor.

10. Arrangement in accordance with claim 9, characterised in that the lateral securement of the slide plate (143) is achieved by means of springs (148), the hardness of which should preferably be selected in such a way that contact of the slide plate (143) with the floor support structure (145) of the cargo compartment (3) does not occur under maximum rated loading on the conveying surface (18).

11. Arrangement in accordance with claim 9. characterised in that support rails (147) running longitudinally along the mid-section of the cargo compartment (3) are provided and form defined supports for the slide plate (143) in case of exceptional deflection in a downward direction of the slide plate (143).

12. Arrangement in accordance with claim 6, characterised in that the slide plate (143) takes the form of a composite lightweight structure employing rigid honeycomb or sandwich structure materials.

13. Arrangement in accordance with claim 6, characterised in that the lateral edges of the conveying surface (18) are secured against undesired lateral contraction movement by a mechanical retaining mechanism, and that the retaining mechanism is positioned on the upper side of the sliding plate (143).

14. Arrangement according to claim 13, characterised in that the retaining mechanism features a retaining rail (159) with a catch lip (158), which projects above the projecting retaining elements (157) arranged on the upper side of the conveying surface (18), preferably with a degree of play.

15. Arrangement in accordance with claim 1, characterised in that in the region of the belts (10), at least in the central section of the guide profile (13) between the lateral walls (15) of the cargo compartment (3), support rollers (85, 86, 87, 97) are provided in the floor (14) of the cargo compartment (3) and/or of a slide plate (96) adjacent thereto.

16. Arrangement in accordance with claim 15, characterised in that floor-mounted support rollers (85, 86) are provided close to the reversing edge (16) of the guide profile (13).

17. Arrangement in accordance with claim 1, characterised in that in the region of the belts (10) at the reversing edge (16) in the guide profile (13) bearing-supported reversing rollers (84) are disposed that preferably protrude at most insignificantly above the outline of the reversing edge (16).

18. Arrangement in accordance with claim 1, characterised in that on the side of the conveying surface (18) opposite the reversing edge (16) of the guide profile (13) a sealing arrangement (64;

65) is disposed in the immediate vicinity of or in contact with the conveying surface (18), with the sealing arrangement (64,

     65) preferably being formed as formed as a brush arrangement (66;

     72), below which a dirt collection pan (75) is suitably disposed.

19. Arrangement in accordance with claim 1 characterized by including rollers (11) for winding up the front and/or rear ends of the belts (10) are attached to adjacent shafts (121;

122) disposed inclined to one another.