Cranes, trains, planes and excavators and stuff like that

Kombigeräte

(very rough translation)

Combined stockpile and return loading units

If the dump operation requires simultaneous storage and recovery, separate devices are required for the stockpile loading and recharging.

However, no simultaneous storage and retention is necessary in many applications.

Then often combined stockpile and reload devices are used, which combine both functionalities.

https://www.beumergroup.com/de/pd/lagerplatztechnik/kombigeraete/