Talk about the application of tracheal suction machines.

　　The air tube suction machine is divided into two types: cantilever crane frame or assembled crane frame, in addition to the crane frame. It consists of a vacuum suction cup, a control handle, a vacuum lifting air tube, a high flow connection air tube, an air filter, a vacuum pump, or a vacuum blower, etc. What are the precautions for operating the air tube suction machine?

　　First, before starting the machine, carefully check whether the mechanical equipment, electrical parts, and protective safety devices are intact and secure. If the controller, brake, limit switch, bell, emergency switch, and other main accessories fail, do not lift heavy objects. Must follow the signal person's instructions, but any emergency stop signal given by anyone should be acted upon immediately.

　　Second, the driver must confirm the command signal before operating and should ring the bell before starting. When approaching the winch limit switch, when the large and small vehicles approach the end or meet with nearby vehicles, the speed should be slow. Do not use reverse to replace braking, limit switches to replace stop switches, or emergency switches to replace general switches.

　　Third, one should walk up and down on designated safe walkways, platforms, or escalators. Walking is prohibited on both sides of the large vehicle track except for maintenance. Walking is prohibited on the small vehicle track. Do not cross from one crane to another. Fourth, when work is paused, do not leave the lifted object suspended in the air. During operation, if there are people on the ground or when lowering the lifted item, a bell should be rung as a warning. Do not let the lifted object pass over people's heads. The lifted object should not be too high off the ground. When two bridge cranes lift one object together, they must follow the command and coordinate their actions.