Track assembly for a storage system

A grid framework structure for a storage and retrieval system, comprising:

• a track system, comprising:
• a plurality of tracks arranged in a grid pattern for guiding one or more load handling devices operable on the track system;
• a plurality of track supports arranged in a grid pattern comprising a first set of track supports extending in a first direction and a second set of track supports extending in a second direction, the second direction being substantially perpendicular to the first direction such that the first set of track supports intersect the second set of track supports at one or more nodes in the track system, each of the plurality of track supports being formed from a sheet metal blank folded along a plurality of bend lines, wherein the first set of track supports intersects the second set of track supports by the second set of track supports being received within one or more cut-outs in the first set of track supports at the one or more nodes in the track system;
• and
• one or more anti-crush devices, wherein:
• the one or more anti-crush devices are interposed between a supporting framework structure and the track supports,
• the one or more anti-crush devices each comprise at least one raised positioning feature, and the plurality of track supports and the supporting framework structure each comprise one or more holes for accommodating at least one raised positioning feature of the one or more anti-crush devices, and
• the at least one raised positioning feature comprises a pair of raised positioning features on a top surface of an anti-crush device and a pair of raised positioning features on a bottom surface of the one or more anti-crush devices;
• the supporting framework structure supporting the track system;
• and
• a plurality of stacks of containers arranged in storage columns located below the track system.