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It is in the design of bridge cranes, it should be the main frame design for strict calculation and analysis by the webs in the main panel, a reasonable arrangement of fresh board specifications and vertical angles, thus enhancing the stability beam.

Therefore in design bridge type hoist crane time, should carry on the strict computation and the stress analysis to the king post design, in king post web plate reasonable arrangement certain specification vertical vigor board and angle steel, thus strengthens the king post the stability.

So when the design of overhead traveling crane, should be on the design of main girder for strict calculation and stress analysis, rational arrangement in the main beam must be perpendicular to the specifications of the plate and angle, so as to enhance the stability of the girders.

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