Despite the ease of operation of stage electric hoists, equipment sway during use is a major safety hazard that must be taken extremely seriously. Once sway occurs, it will not only seriously compromise operational safety but also potentially exert a fatal impact on the performance. This is especially true during the lifting of performance props and stage set pieces. If an electric hoist sways while carrying a heavy load, two major risks will arise: on the one hand, it may cause the props to collide and become damaged, disrupting the rhythm and effect of the performance and even leading to an interruption; on the other hand, the swaying heavy load may deviate from its predetermined trajectory and collide with stage facilities, lighting, and sound equipment. More seriously, in the event of a load falling or equipment losing control, it will directly threaten the personal safety of the actors and staff on stage, with unimaginable consequences. Therefore, controlling the sway of stage electric hoists is a core prerequisite for ensuring the safety and smooth progress of stage performances.
During the operation of the equipment, safety operating procedures must be strictly followed. Working in harsh environments (such as strong winds, heavy rains, or excessively high dust concentrations) is absolutely prohibited. At the same time, it is strictly forbidden to lift loads exceeding the rated capacity of the equipment, or to exceed the limit of 120 rated switching operations per hour. These prohibitions are in place to prevent performance degradation of the equipment due to overloading or frequent start-stop cycles, which could trigger sway. In terms of operating techniques, the core principle is "stable and uniform speed". Oblique pulling and lifting are strictly forbidden - oblique pulling will cause uneven force on the heavy load, inevitably leading to severe sway and simultaneously accelerating the wear of the steel wire rope. When moving the equipment horizontally, it should be started slowly to allow the equipment and the heavy load to gradually adapt to the moving state before accelerating smoothly. When lifting a load, the operation must be carried out in a gradual and steady manner, and abrupt lifting is strictly prohibited. Even if thorough equipment inspections and environmental assessments have been conducted in advance, abrupt lifting will cause the heavy load to sway significantly due to inertia, disrupting the stable operating state of the equipment.