Container-handling vehicle

A storage system comprising:

• a three-dimensional grid;
• and
• at least one container-handling vehicle comprising:
• a lifting shaft having first and second end sections, a motor for rotating the lifting shaft, a lifting frame for releasably connecting to a storage container, and a first pair of lifting bands and a second pair of lifting bands connecting the lifting shaft to the lifting frame, wherein:
• each lifting band has a first end connected to the lifting shaft and a second end connected to the lifting frame;
• each pair of lifting bands has a first lifting band connected at the first end section of the lifting shaft and a second lifting band connected at the second end section of the lifting shaft;
• the first pair of lifting bands extends in a substantially horizontal direction from the lifting shaft towards a band guiding assembly arranged to change the direction of the first pair of lifting bands to extend in a vertical direction;
• and
• the second pair of lifting bands extends in a vertical direction from the lifting shaft at the side of the lifting shaft facing away from the band guiding assembly,
• wherein the grid comprises multiple storage columns, in which storage containers may be stored on top of one another in vertical stacks, and
• wherein the container handling vehicle is operated on rails at a top level of the grid for retrieving storage containers from, and storing storage containers in, the storage columns, and for transporting the storage containers horizontally across the grid.