Causes of driving several variations of injury

     Driving is a modern industrial production 50 ton electric chain hoist, are widely used in lifting, transport, handling, and installation of various items of work for increasing labor productivity, play a huge role, and Shandong in the use of traffic there will inevitably be deformed, the following causes of traffic on the deformation and deformation may occur for analysis:
     1, trolley manualthe next bend. Because of traffic on both sides of stiffener beam welding finished weld cooling contraction, resulting in different internal stress, and the formation of lateral bending. Correction lateral bending triangular heating method, the horizontal flange plate correction, heating position when the election in the convex side of the horizontal flange plate, heated to a red triangle, cold water to cool quickly, by the contractile force to achieve the purpose of correction.
     When the vertical plate rigidity is large, the board may consider appropriate in the road vertical and horizontal position of the linear heating plate, the purpose is to reduce the role of the board to contain the horizontal flange plates. When one does not rectified, could close next continues heating correction, to avoid overlap the previous.
     2, arched. Camber deformation more material cut by the material, the heat caused by uneven. When the driving assembly is completed, because the web is wide, the upper and lower flange plates contain, triangular heating method, there is no effect. Therefore, prior to assembly staff must, to carefully examine the web, web correction after passing to assemble, otherwise, wasted time, money, and corrective effect is not obvious, the formation of defects.