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塔式起重机静刚度是产品性能指标之一。起重机臂架端部在承载后的位移量作为使用对需要的静刚度指标,位移量分别为水平及垂直位移。过去采用的检测方法是在测量前将二把直(标)尺按置在臂架端部,并精确地调整直尺位置使与地面分别保持水平和垂直,用二台经纬仪各自观察其标尺在起重机承载前后的移动量,变幅后要求重新调整直尺的水平及垂直位置并可靠紧固。对于塔式起重机在高空中调整直尺位置困难较大,位置精度难以保证。此外,标尺在承载后不仅作平移而且还产生转角,由此带来了测量中不可忽视的误差。为了克服上述缺点,我们采用了激光配
Static stiffness of tower cranes is one of the performance indicators. The displacement of the end of crane boom after bearing is used as an index of static stiffness required for use. The displacement is horizontal and vertical displacement, respectively. In the past, the test method used was to place two straight (standard) rulers on the end of the boom prior to the measurement and adjust the position of the ruler precisely so as to be horizontal and vertical to the ground respectively. Observe the scale with two theodolites Crane before and after carrying the amount of movement, after luffing requirements to re-adjust the horizontal and vertical ruler and reliable fastening. It is difficult to adjust the ruler position in the tower crane at high altitude, and the position accuracy is difficult to guarantee. In addition, the scale does not only translate but also generate a corner after it has been carried, resulting in an undeniable error in the measurement. In order to overcome the above shortcomings, we use a laser with