On August 8th, the Central Meteorological Observatory issued an orange typhoon warning: This year's super strong typhoon "Lichma" was located at 10 am on August 8th, about 830 kilometers southeast of Xiangshan, Zhejiang, in the ocean east of Taiwan, with a maximum wind force of 16 near the center. It is expected to make landfall along the coast of central and northern Zhejiang during the day on the 10th.

    Reduce the independent height of the tower crane, or reduce the tower body suspension height above the tower crane attachment frame. The typhoon damage to the tower crane is proportional to the square of the independent height or suspension height, or the climbing frame is lowered to the lowest or the most attached place of the tower body, so that the climbing frame changes the force of the hanging plate, the oil cylinder is recovered, and the rope is fixed firmly, or the wind rope is pulled in the four directions at the connection point of the lower support of the tower crane or the top of the tower body.

    Check the strength of the attachment frame and strengthen it if necessary. Including the embedded part of the attachment frame, the adjusting screw, the attachment support rod, etc.

Check whether the strut in the attachment frame of the tower crane has been installed in place and ensure that the top two attachment frames have inner strut.

    Including pin shaft, high strength bolt, anchor bolt, etc.

    Disconnect the main cable from the electric control cabinet to prevent the main cable from being twisted

Check that the normally closed rotary vane brake is open, and the tower crane can turn 360° barrier-free.

    The hook is received at the highest point, the amplitude is about 10 meters, and the main cable is fixed.