Fall restraint apparatus for a grid framework structure

A fall restraint apparatus for manually moving on a grid structure including a first set of parallel tracks and a second set of parallel tracks running transversely to the first set in a substantially horizontal plane and arranged in a grid pattern including a plurality of grid cells, each grid cell having a length in a range 600-800 mm and a width in a range 400-600 mm so defining a grid opening defined by a pair of adjacent tracks of the first set of parallel tracks and a pair of adjacent tracks of the second set of parallel tracks;

• the fall restraint apparatus comprising:
• a frame having a weight less than 100 kg and an upper portion and a lower portion, the upper portion being configured for restraining at least one operative;
• and
• a moving assembly mounted to the lower portion of the frame, the moving assembly being configured for moving the frame on the grid structure, said moving assembly includes a rolling assembly;
• a front wheel assembly and a rear wheel assembly, each of the front wheel assembly and the rear wheel assembly extends across the at least one grid cell such that each of the front wheel assembly and the rear wheel assembly will contact different tracks of the grid structure and the fall restraint apparatus will be operative to move in any direction on the grid structure.