Page 217 - Water Standards
P. 217

2) The wheel  s vertical deflection shall be measured when the wheel is overhead and
                   the vertical deflection shall be less than L / 400mm (L is the measuring length).
                 3) The wheel  s horizontal deflection shall be less than L/ 1000 ( L is the measuring
                   length). The deflection on the same wheel axial line shall be in opposite direc⁃
                   tions.
                 4) Differential position of wheels in the same end beam: if there are two wheels, it
                   shall be less than 2mm; if there are more than two wheels, it shall be less than
                   3mm. The differential position of wheels in the same balance beam shall be no lar⁃
                   ger than 1mm  
           4   1   11  Screw⁃type headstock gear installation shall meet the following requirements:
               1  After arrival at the site, the headstock gear shall be unpacked and checked. Only
           when the headstock gear has passed the acceptance can it be installed  
               2  After cleaning the headstock gear box, new lubricant oil shall be added to meet the
           oil level requirements. The oil seal and interface shall have no oil leakage  
               3  Check the position of the embedded foundation bolts to ensure the bolt extension
           length shall meet the installation requirements  
               4  The elevation deviation of headstock gear platform shall be no larger than ±5mm and
           its horizontal deviation no larger than 0   5/ 1000  
               5  The distance deviation between the lengthwise or crosswise centers line of headstock
           gear base and the center line of the gate hoisting eye shall be no larger than ±1mm  
               6  The local gap between the headstock gear base and the foundation plate shall be no
           larger than 0   2mm and the non⁃contacting surface area shall be no larger than 20% of the total
           contact surface area.
           4   1   12  Trial operation of fixed winch headstock gear shall meet the following requirements:
               1  The requirements for electrical equipment tests are as follows: before the power con⁃
           nection test, all the wiring shall be checked carefully to meet the drawing requirements. Only
           when the whole circuit insulation resistance is larger than 0   5MΩ can the power connection
           test be done. During the test, the temperature rises of each electric motor and electrical com⁃
           ponent cannot be larger than their allowable values. The headstock gear  s own electrical e⁃
           quipment shall be used for the test. If any component such as a contact terminal is burnt out
           in the test, it shall be replaced  
               2  Zero load tests. The headstock gear shall be operated back and forth along the whole
           stroke 3 times in the zero⁃load test. Check and adjust the following electrical and mechanical
           parts:
                 1) The electric motor shall run steadily and the degree of unbalance of the three⁃
                   phase current shall be no larger than ±10%. The electrical equipment shall have
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