MOVABLE PERSONNEL PLATFORM FOR UNLOADING A UNIT LOAD DEVICE

• US 20150078866A1
• Filed: 09/13/2013
• Published: 03/19/2015
• Est. Priority Date: 09/13/2013
• Status: Active Grant

• Current Assignee: Deutsche Post AG
• Original Assignee: Deutsche Post AG
• Inventors: Laib, Jason, Cobb, Travis, Walters, Dan
• Granted Patent: US 9,517,845 B2
• Time in Patent Office: Days
• US Class Current: 414/298
• CPC Class Codes: B64F 1/32 for handling freight
• CPC Class Codes: B65G 69/22 Horizontal loading or unloading platforms as road or railway equipment B61B1/00, E01F1/00

Abstract

The invention relates to an unload access system for an unit load device, comprising a framework, the framework delimiting a cargo space arranged on a ground load deck and the framework comprising an unload deck for unloading shipments out of the unit load device, whereby the unload deck is arranged distant above the ground load deck and extends in an offset plane adjacent to the cargo space, the unload deck comprises a movable platform, and the platform extends coplanar with the unload deck and is movable between a retracted position and a maximum extracted position, whereby in the maximum extracted position the platform overlaps at least partly the cargo space by extending into the cargo space and in the retracted position the platform does not overlap the cargo space.

Claims

1. Unload access system for an unit load device, comprising a framework, the framework delimiting a cargo space arranged on a ground load deck and the framework comprising an unload deck for unloading shipments out of the unit load device, whereby

the unload deck is arranged distant above the ground load deck and extends in an offset plane adjacent to the cargo space,

the unload deck comprises a movable platform, and

the platform extends coplanar with the unload deck and is movable between a retracted position and a maximum extracted position, whereby

in the maximum extracted position the platform overlaps at least partly the cargo space by extending into the cargo space and

in the retracted position the platform does not overlap the cargo space.

2. The unload system according to claim 1, whereby the platform is fixable at any position between the retracted position and the maximum extracted position.

3. The unload system according to claim 1, wherein the platform comprises a rectangular surface that extends seamlessly with the unload deck, and wherein the platform is guided on two sites by roller rails and comprises a motorized means for moving the platform.

4. The unload system according to claim 1, wherein the framework comprises an elevator adapted for vertically elevating the unit load device between the ground load deck and the unload deck such that the unit load device is stoppable at any intermediate stop locations.

5. The unload system according to claim 1, further comprising a programmable logic controller for controlling the movement of the platform and of the elevation, whereby the programmable logic controller only allows for moving the platform from the retracted position to an extracted position if the elevator is elevated to the unload deck.

6. The unload system according to claim 4, whereby the cargo space and/or the elevator comprises rollers for loading and unloading the unit load device into and out of the elevator.

7. The unload system according to claim 4, whereby the cargo space and/or the elevator comprises a plurality of rollers arranged behind one another and/or in parallel rows in a drivable insertion direction into the elevator.

8. The unload system according to claim 1, wherein the unload deck comprises a foldable conveyer, which can be folded out into the framework.

9. The unload system according to claim 1, wherein the platform comprises a vertically slidable load deck door arranged on the ground load deck and/or a vertically slidable unload deck door arranged on the unload deck, whereby the moveable platform is configured such that a movement from the retracted position in a maximum extracted position is only possible if the unload deck door is opened.

10. The unload system according to claim 1, wherein the unit load device, whereby, if the unit load device is elevated to the unload deck, the extracted platform extends into the unit load device.

11. Method for unloading a unit load device, with an unload access system according to claim 4, comprising the steps of:

a) positioning the unit load device on the cargo space on the ground load deck,

b) elevating the unit load device from the ground load deck to the above unload deck with the elevator, and

c) moving the platform from the retracted position into an extracted position.

12. The method according to claim 11, comprising the step of:

c′

) moving the platform in step c) with a speed of 30 fpm.

13. The method according to claim 11, comprising the further steps of:

d) moving the platform from the extracted position into the retracted position,

e) elevating the unit load device from the above unload deck to the ground load deck, and

f) unloading the unit load device.