─     1: Trolley (wire rope hoist or chain hoist)

─     2: Drive

─     3: End carriage

─     4. Travel mechanism

─     5: Main girder

─     6: Mobile control

─     7: Bottom block

─     8: Crane track

─     9. Non-powered travel mechanism

─     10: Side panel

─     11: End carriage

─     12: Joint face

─     13: Safety buffer

─     14. Powered travel mechanism