Analysis of screw buckling in hoist and deformation control

The screw hoist is widely used in sluice and its safe operation has strict requirements on screw straightness. However, screw buckling and deformation are often found in engineering detection because of poor running and insufficient consideration of the slenderness ratio in the original design. Euler Formula Method and Stability Coefficient Method were used to calculate the screw pressure and the results of these two methods are compared. Besides, the eigenvalue buckling analysis of screw was carried out by ABAQUS software to obtain the deformation results and critical load. Meanwhile, the influence of two screw synchronization on destabilization was analyzed. The study results can provide corresponding engineering treatment measures and advice to prevention of buckling deformation.