According to the characters of the stage lifter,we have innovatively applied the movable pulley mechanism to it,which is of simple construction, low cost and easily to manipulate.

• 根据舞台升降机的工作特点和使用要求,对其工作原理和结构进行了创新构思,巧妙地运用滑轮机构完成舞台升降机设计和制造工作。