Transfer ramp systems for loading, unloading, or transferring cargo between one or more commercial vehicles and associated systems, devices, and methods

A transfer ramp system mountable beneath a top platform at a rear of a vehicle or trailer, the transfer ramp system comprising:

• a transfer ramp;
• and
• at least one extendable arm attached to the transfer ramp and usable to extend or retract the transfer ramp,
• wherein, when the transfer ramp system is mounted beneath the top platform, the transfer ramp is moveable, using the at least one extendable arm, between (a) a stowed position in which the transfer ramp is positioned beneath the top platform and (b) a deployed position in which the transfer ramp is positioned above the top platform and another structure such that the transfer ramp is usable to bridge a gap between the top platform and another structure for moving cargo between (i) the vehicle or trailer and (ii) the other structure, and
• wherein, in the deployed position, the transfer ramp is in a deployed orientation in which a top surface of the transfer ramp is generally parallel to a top surface of the top platform.

A cargo transferring system mountable to or under frame rails of a vehicle or trailer, the cargo transferring system comprising:

• a bridge deck;
• one or more extendable arms operably coupled to the bridge deck;
• and
• one or more actuators configured to extend and retract the one or more extendable arms,
• wherein, during operation of the cargo transferring system when mounted to or under the frame rails of the vehicle or trailer, the one or more actuators are controllable to transition the bridge deck between a stowed position under the frame rails,
• a transition position in which the one or more actuators are controllable to maneuver the bridge deck from beneath the platform of the vehicle or trailer, upwards and through a space between the vehicle or trailer and the other structure, and to a position above the platform of the vehicle or trailer, and
• a deployed position in which a top sruface of the bridge deck is generally parallel to a top surface of a platform of the vehicle or trailer and is usable to transfer cargo between (i) the platform of the vehicle or trailer and (ii) a surface of another structure different from the vehicle or trailer.