A quick release and reconnectable structure to allow additional movement beyond the limit of a powered arm providing assistance in the opening of a cover of an enclosure includes a support base, a connector, and a lock. The connector is slidably arranged on the support base and can be separated from the support base. The lock comprises a locking body and a clamping shaft. The locking body is positioned on the support base. The clamping shaft is slidably positioned on the locking body. A holding hole is defined in the connector. The sliding direction of the clamping shaft intersects with the sliding direction of the connector along the support base, and the clamping shaft can be inserted into or withdrawn from the holding hole.

An automated top door system is provided for selectively closing and opening a cargo container for top loading of cargo. The top door system includes: a door panel, a rotary actuator driven by a motor, and a coupling means connecting the door panel and the rotary actuator. The door panel is a self-supporting structural lightweight door panel, and the coupling means, which is a separate part or is part of said door panel, is configured to provide rotational movement of the door panel around a rotational axis of the rotary actuator, in response to the rotary movement provided by the rotary actuator, when in use. A top-loadable cargo container includes an automated top door system; and uses of the automated top door system in transport vehicles.