Method and transport device for transporting a container or pallet with air cargo

Abstract

Method for transporting a container or pallet with cargo, wherein at least one transport device is used comprising a frame consisting of an elongate central member (11) and carrying beams (12), each carrying beam (12) extending perpendicular to the central member (11) in the same direction from a different end of the central member (11) thus forming a generally U-shaped frame, wherein in use said U-shaped frame extends in a generally horizontal orientation, said carrying beams being arranged to engage and carry a bottom part of a container or a pallet, wherein the bottom side of said frame is provided with a plurality of air bearings (13) arranged to lift said frame with said cargo from a flat floor surface, wherein a container or pallet to be transported is moved into or out of a vehicle at an transshipment location, wherein for transporting said container or pallet in or out of said vehicle said container or pallet is engaged and lifted by said at least one transport device by activating said air bearings (13), wherein said transport device is moved in and/or out of said vehicle while said air bearings (13) are activated, and wherein said transport device is disengaged from said container or pallet by deactivating said air bearings (13).

Claims

1. Method for transporting a container or pallet with cargo comprising: extending a U-shaped frame of at least one transport device in a horizontal direction; engaging a plurality of carrying beams of the at least one transport device to carry a bottom part of a container or a pallet; and moving the container or pallet into or out of a vehicle at a transshipment location, wherein the at least one transport device comprises a frame comprising an elongate central member and the carrying beams, each carrying beam extending perpendicular to the central member in the same direction from a different end of the central member thus forming the U-shaped frame, wherein the bottom side of said frame is provided with a plurality of air bearings arranged to lift said frame with said cargo from a flat floor surface, wherein moving the container or pallet in or out of said vehicle comprises engaging and lifting the container or pallet by activating said air bearings, wherein said transport device is moved in and/or out of said vehicle while said air bearings are activated, and wherein said transport device is disengaged from said container or pallet by deactivating said air bearings, and wherein engaging a plurality of carrying beams of the at least one transport device to carry a bottom part of a container or a pallet comprises engaging a plurality of inwardly movable engaging members on said plurality of carrying beams with said bottom part of said container or said pallet when said bottom part of said container or said pallet extends between said carrying beams.

2. Method according to claim 1, wherein moving said container or pallet into or out of a vehicle at a transshipment location comprises: moving the container or pallet into said vehicle at a first transshipment location; transporting said vehicle to a second transshipment location; and moving said container or pallet out of said vehicle.

3. Method according to claim 2, wherein, after moving said container or pallet into said vehicle at a first transshipment location, carrying the at least one transport device from the first to the second transshipment location in the same vehicle used to move said container or pallet.

4. Transport device for moving a container or pallet loaded with cargo, comprising a frame comprising of an elongate central member and plurality of carrying beams, each carrying beam extending perpendicular to the central member in the same direction from a different end of the central member thus forming a generally U-shaped frame, wherein in use said U-shaped frame extends in a generally horizontal orientation, said carrying beams being arranged to engage and carry a bottom part of a container or a pallet, wherein the bottom side of said frame is provided with a plurality of air bearings arranged to lift said frame with said cargo from a flat floor surface, and wherein said frame further comprises a plurality of inwardly movable engaging members on said carrying beams arranged to engage said bottom part of said container or said pallet when said bottom part of said container or said pallet extends between said carrying beams.

5. Device according to claim 4, wherein said engaging members are arranged to clamp the bottom part of said container or said pallet.

6. Device according to claim 4, wherein said engaging members have an L-shape, such that the lower horizontal plate shaped part of the L-shaped engaging members can be inwardly moved under the sides of the container or pallet, and the vertical flat inwardly facing surfaces of the L-shaped engaging members can be inwardly pushed against the lower sides of the container or against the pallet.

7. Device according to claim 4, wherein said frame comprises at least four of said engaging members, one near each end of a carrying beam.

8. Device according to claim 4, wherein said frame is furthermore provided with a plurality of wheels, which allow the frame to roll over a flat floor surface.

9. Device according to claim 8, wherein said frame comprises at least four of said wheels, one near each end of a carrying beam.

10. Device according to claim 8, wherein said wheels are retractable into the frame, such that in the retracted position of the wheels the frame is prevented from rolling over a flat floor surface.

11. Device according to claim 8, wherein the wheels near the ends of the carrying beams on the central member side are caster wheels.

12. Device according to claim 8, wherein the wheels near the ends of the carrying beams opposite the central member side are fixed to drive in the direction perpendicular to the central member.

13. Device according to claim 4, further comprising a switch provided on the transport device such that when the transport device is moved against the container or pallet, the switch activates the inwardly movable engaging members on said carrying beams to engage said bottom part of said container or said pallet.

14. Device according to claim 4, wherein said frame comprises at least four of said air bearings, one near each end of a carrying beam.

15. Device according to claim 4, further comprising at least one compressor or air pump for providing compressed air to said air bearings.

16. Device according to claim 4, wherein the central part of said frame is provided with a push bar arranged to be engaged by the hands of an operator for manipulating the device.

17. Device according to claim 16, wherein said push bar extends parallel to the central member at a height of between 1 m and 1.8 m above the bottom side of the frame, such that an operator can engage it by the hands while standing on the floor.

18. Device according to claim 4, any of the previous claims, wherein the distance between said carrying beams is between 0.8 m and 3.3 m.

19. Device according to claim 4, wherein said vehicle is an aircraft and said transshipment location is an airport.

Description

(1) The invention will further be described by means of the preferred embodiment, as shown in the figures, wherein:

(2) FIG. 1 is a perspective view of the transport device for moving a container or pallet with air cargo;

(3) FIG. 2 is a front view of the transport device;

(4) FIG. 3 is a top view of the transport device;

(5) FIG. 4 is a bottom view of the transport device;

(6) FIGS. 5, 6 and 7 are side views of the transport device.

(7) According to the figures the transport device for moving a container or pallet with air cargo 1 comprises an elongate central member 2 and carrying beams 3. The carrying beams 3 extend perpendicular to the central member 2 in the same direction from different ends of the central member 2, forming a U-shaped frame. Four inwardly engaging members 4 are provided on the inwardly facing sides of the carrying beams 3, one near each end of a carrying beam 3, to engage and clamp a bottom part of a container or a pallet 1 between the carrying beams 3. The engaging member 4 have a generally L-shape, such that the lower horizontal plate shaped part of the L-shaped engaging members can be inwardly moved by a pneumatic actuator under the sides of the container or pallet in order to be able push it upwards, and the vertical flat inwardly facing surfaces of the L-shaped engaging members can be inwardly pushed by said actuator against the lower sides of the container or against the pallet in order to clamp it between them. The distance between the carrying beams 3 is such that standard containers or pallets 1 can be engaged between them. A mechanical push switch 41 is provided on the central member 2 such that when the transport device is moved against the container or pallet, the switch 41 pneumatically activates the pneumatic actuators.

(8) The bottom side of the frame is provided with air bearings 5, one near each end of a carrying beam 3, arranged to lift said frame together with said cargo 1 from the flat floor surface, such that the device with the cargo 1 can be moved over flat surfaces in and out of an airplane. The air bearings 5 are of the type that can lift the device approximately 25 or 30 mm.

(9) The frame is furthermore provided with wheels 6, 7, one near each end of a carrying beam 3, which allow the frame to roll over a flat floor surface and be moved when the device is not used for carrying cargo, as shown in FIG. 6. The wheels 6, 7 are retractable and extendible by a pneumatic actuator in the frame, such that in the retracted position of the wheels 6, 7 the frame is prevented from rolling away, as shown in FIG. 5. The wheels 6 near the ends of the carrying beams on the central member side are caster wheels, and the wheels 7 near the ends of the carrying beams opposite the central member side are fixed to drive in the forward/backward direction.

(10) A separate movable air pump 8 (not shown) is provided for providing compressed air to the air bearings 5 and the pneumatic actuators. Furthermore a push bar 9 is arranged on the central member 2 to be engaged by the hands of one or more operators 10 for manipulating the device. The push bar 9 extends parallel to the central member 2 at a sufficient height, such that an operator 10 can engage it by the hands while standing on the floor, as shown in FIG. 1. A control handle 8 is provided on the push bar for activating the air bearings 5.

(11) The device is thus operated entirely by the supply of compressed air, without any need for electronic components of the device for its operation.

(12) The invention has thus been described by means of a preferred embodiment. It is to be understood, however, that this disclosure is merely illustrative. Various details of the structure and function were presented, but changes made therein, to the full extent extended by the general meaning of the terms in which the appended claims are expressed, are understood to be within the principle of the present invention. The description and drawings shall be used to interpret the claims. The claims should not be interpreted as meaning that the extent of the protection sought is to be understood as that defined by the strict, literal meaning of the wording used in the claims, the description and drawings being employed only for the purpose of resolving an ambiguity found in the claims. For the purpose of determining the extent of protection sought by the claims, due account shall be taken of any element which is equivalent to an element specified therein.