The first ray of sunshine in the morning has not yet fully fallen, and the lights inside the rail transit station are already bright. A group of workers dressed in work uniforms gathered around the upcoming installation of automatic ticket checking equipment, which is an important part of the rail transit equipment installation project.

This automatic ticket checking device has a complex structure, with precise electronic components and mechanical transmission devices inside. The accuracy of its installation position directly affects whether passengers can pass through the ticket smoothly in the future. However, due to the limited space of the station and certain errors in the preliminary foundation construction, it is not easy to accurately install this equipment.

Just as everyone was feeling a bit worried, the inconspicuous chain hoist in the corner caught Wang's attention. Although this chain hoist has a simple structure, it has a unique function. Wang instructed his colleagues to firmly connect the hook of the chain hoist to the lifting point of the equipment, and then he personally grasped the chain to start the operation.

Every time you pull the chain, the device moves slightly. Wang Gong's forehead oozed fine beads of sweat, and his eyes were fixed on the measuring instrument, not missing any deviation. To the left, slow down... Okay, stop! "Under his command, the device gradually adjusted to the optimal position under the traction of the chain hoist. The workers around couldn't help but breathe a sigh of relief. They knew that this seemingly ordinary chain hoist was like a nimble "calibration elf" at this critical moment, allowing complex equipment installation work to proceed smoothly and ensuring the first step of orderly operation of the rail transit system.