The precise positioning of each device in the substation is crucial for the stable operation of the power network. As dozens of tons of transformers and circuit breakers slowly rise, drawing precise arcs between the criss crossing steel frames, the hand pulled hoist hidden behind the lifting rope is silently writing the miracle of the project.

This seemingly simple mechanical device is actually a concrete expression of precision mechanics. On the debugging site, the engineer held the chain and gently pulled it, carrying the trust of tens of thousands of tons in the subtle sound of gear meshing. When the substation equipment approaches the preset coordinates, the operator adjusts the chain length to complete the docking with millimeter level accuracy, achieving precise positioning.

When night falls, the substation is still brightly lit. The chain hoist is still silently working hard, cooperating with the debugging team to complete the final calibration. Every traction and hover of it gradually turns the cold steel equipment into a reliable fortress guarding the light. This machine without temperature, with precise force, played the most moving melody of power engineering in the symphony of electric current and steel.