Page 205 - Water Standards
P. 205

Table 4   1   3  Installation tolerance or maximum deviation
                             of tainter gate hinged bearings

                                                Tolerance or maximum deviation
             No                Item
                                                        (mm)
                    Distance from hinged bearing center to
              1                                          ±1   5
                         sluice hole center line
              2               Mileage                    ±2   0
              3              Elevation                   ±2   0
              4       Axis hole tilt of hinged bearing  ±1/ 1000
              5      Axiality of two hinged bearings axes  ±1   0
              Note: Axis hole tilt of hinged bearing means tilt in any direction  
               2  When a sectional tainter gate leaf has been assembled, each size shall be rechecked
           according to the design drawings and the results shall meet the relevant requirements of this
           specification. If the segments are welded together, a qualified welding process shall be adopt⁃
           ed, and both the welding and checking of the welding quality shall meet the relevant require⁃
           ments of this specification. If the segments are bolted together, the bolts shall be tightened
           and checked according to the relevant requirements for bolting  
               3  The installation of tainter gates, support arms and supporting hinges shall meet the
           following requirements:
                 1) If the junction plates at two ends of a support arm need to be welded when being
                   installed, effective measures shall be taken to reduce any deformation during the
                   welding process to ensure the junction plates and main beams or hinges are well
                   connected.
                 2) Connecting bolts shall be tightened and checked according to the relevant require⁃
                   ments for bolting, and the junction surface shall be also checked according to the
                   relevant requirements to make sure the shear plate and the junction plate are later⁃
                   ally tightened and welded according to the design requirements.
                 3) The maximum deviation of R, the radius of the tainter gate outer surface whose
                   center is the hinge axis center, shall meet the following requirements: for tainter
                   gates with its upper portion exposed, the maximum deviation shall be ± 8   0mm
                   and the relative difference between the radii on two sides shall be no larger than
                   5   0mm. For submerged tainter gates, the maximum deviation shall be ±4   0mm
                   and the relative difference between the radii on two sides shall be no larger than
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