Page 216 - Water Standards
P. 216
Figure 4 1 10-7 Figure 4 1 10-8
3 Large cart track installation shall meet the following requirements:
1) The carts wheels shall be connected with the track s surface and not be suspended.
2) Before laying the steel tracks, the quality certifications of the steel tracks shall be
checked. Only when they have passed inspection can the tracks be laid.
3) Before hoisting the tracks, the track installation datum line shall be determined
and the deviation between the actual track center line and datum line shall be less
than 2mm.
4) The track gauge deviation shall be no larger than ±5mm.
5) The track s lateral local bending shall not be larger than 1mm in any 2m segment
length.
6) The difference between the highest and lowest points of each track over the whole
stroke shall be less than 2mm.
7) The relative difference in track elevation at the same cross section shall be less
than 5mm.
8) Joint positions of two parallel tracks shall be staggered and the staggered distance
shall be larger than the wheelbase between front and back wheels. The height
difference and lateral misalignment of the joints shall be less than 1mm and the
gap between joints shall be less than 2mm.
9) For ground wire connection with the track, a ground resistance test shall be done,
and the ground resistance shall be less than 4Ω.
4 The travelling mechanism installation shall meet the following requirements:
1) The span deviation shall be no larger than ±5mm and the span s relative difference
shall be less than 5mm.
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