1. Installation Methods and Positions    - Normal Hanging:        - Normal hanging refers to the way that the electric hoist is suspended vertically downward in a normal manner. During installation, the suspension point of the electric hoist is above the object, and it is directly connected to the object to be lifted below through devices such as a hook. For example, in the initial stage of stage construction, when some heavy set frames need to be lifted from the ground and installed at an appropriate position above the stage, the normal - hanging method can be adopted. This method is in line with people's daily intuitive understanding of the use of lifting equipment. The installation position is relatively easy to determine, and it is convenient for operators to observe and control the lifting process when lifting.    - Inverted Hanging:        - Inverted hanging means that the electric hoist is hung upside - down below the object, for example, hung upside - down on the truss structure of the stage. Its suspension point is below the object, and the object is lifted upward through a special connection device. In some stage performance scenarios, in order to achieve special visual effects, such as lowering props or actors from the top of the stage, the inverted - hanging method will be used. However, the installation of inverted hanging is relatively complex, and it is necessary to ensure that the electric hoist is firmly fixed. Because the direction of its own gravity and the gravity of the lifted object are the same, the pressure on the suspension point is greater. 2. Force - bearing Conditions    - Normal Hanging:        - When lifting an object with normal hanging, the main force - bearing components of the electric hoist are the hook and the chain, etc. The chain bears the gravity of the object, and the direction of the pulling force is downward along the chain. The hook bears the pulling force from the object, and its force - bearing direction is basically vertically downward. For example, when lifting a 100 - kilogram stage prop, the pulling force of the chain and the pulling force received by the hook are approximately equal to the gravity of a 100 - kilogram object (about 980N), and these forces mainly act vertically downward on the corresponding components.    - Inverted Hanging:        - In the case of inverted hanging, the force - bearing situation of the electric hoist is more complex. In addition to bearing the gravity of the lifted object, its own weight will also generate additional pulling force on the connecting components. For example, when lifting a 100 - kilogram prop, assuming the weight of the inverted - hanging electric hoist itself is 50 kilograms, then the pulling force borne by the suspension point connecting the electric hoist is approximately equal to the gravity of a (100 + 50) - kilogram object (about 1470N). Moreover, since the object is lifted upward in inverted hanging, the direction of the force is upward, and the direction of the force acting on the internal transmission components and braking components of the electric hoist is opposite to that in normal hanging, which requires higher performance of these components. 3. Application Scenarios and Effects    - Normal Hanging:        - Normal hanging is suitable for most conventional stage set construction and prop handling. For example, when building a stage background frame, the frame components are lifted from the ground by normal hanging to an appropriate height for installation. In terms of visual effects, the object lifted by normal hanging gives the impression of moving from bottom to top, which is more in line with the audience's visual perception of normal object lifting.    - Inverted Hanging:

       - Inverted hanging is often used to create some special stage effects. For example, in some large - scale concerts or dance performances, actors slowly descend from the top of the stage through an inverted - hanging electric hoist, as if descending from the sky, which can create a very shocking visual effect. Or in some fantasy - themed stage plays, the inverted - hanging electric hoist can lower props with special - effect lights from above, increasing the sense of layering and fantasy on the stage.