Shanghai Waigaoqiao Shipyard's 800-ton gantry crane suddenly issued an alarm: The main beam's mid-span deflection exceeded the limit by 32 millimeters! The system instantly locked onto the disaster chain - the settlement of the west rail triggered the jamming of the large vehicle, and the structural stress continued to accumulate. The intelligent central system executes the emergency plan within 0.7 seconds: cutting off the power supply of the walking motor, initiating hydraulic deviation correction and lifting, laser scanning and reconstruction...

I. Vital Sign Network of Purgatory Equipment The intelligent operation and maintenance system implants a triple perception neural network into the steel giant: Youdaoplaceholder0 Structural state perception: capture the fatigue panting of metals Fiber Bragg grating sensor network: 128 strain monitoring points are buried at key nodes of the main beam, with a resolution of 1 microstrain (equivalent to 0.2MPa stress). Shengfa...

When a 260-ton casting crane at a steel plant in Hebei Province was hoisting ladles, the main control screen suddenly flashed blood red: the temperature curve of the west track abnormally soared! The system completed the diagnosis within 0.8 seconds - the settlement of the large vehicle track caused a sharp increase in flange friction. Instantaneous execution of three-level response: Automatic speed limit of 30% for the lifting mechanism, synchronous braking of dual brakes, laser...

At a major repair site of a ship lock at the mouth of the Yangtze River, a 1,600-ton gantry crane suddenly experienced vortex vibration while hoisting the gate, and the hook shot up at an abnormal speed of 1.8 meters per minute. When only 1.2 meters were left from the crane beam, the triple defense system was instantly activated: the laser rangefinder emitted a shrill beeping sound, the hydraulic damping system absorbed the kinetic energy of 70%, and the final counterweight was locked at the very top...

The review of the deep hole gate fall accident at the Three Gorges Flood Discharge is suffocating: At the moment when the hydraulic system collapsed and the electronic limit failed, the out-of-control gate hit the bottom embankment at a speed of 2.3 meters per second. At a critical juncture of life and death, the tungsten steel pin of the heavy hammer limit switch popped out within 0.28 seconds, forcibly seizing the spoke plate of the drum and trapping the 800-ton steel gate...

At the moment when the ship lift cabin at Xiangjiaba entered the water, the monitoring system suddenly triggered an alarm: the height of the left hook head downstream deviated abnormally by 67 millimeters! The hook head limit switch immediately initiates a three-level response - first cutting off the power supply of the main hoisting motor, then activating the hydraulic deviation correction system, and finally resetting the hook head to the safe envelope zone through laser guidance. Post-event arrangement...

In the monitoring room of the Three Gorges Ship Lock, the alarm sound broke the silence of the early morning - the downstream A-frame gate suddenly accelerated during the closing process, with the drum speed exceeding the limit by 120%! At the critical moment, multiple anti-overrolling switches acted simultaneously: the heavy hammer mechanism was the first to trigger the mechanical latch to lock the drum, and the laser ranging module confirmed that the door body exceeded the safety line by 0.3...

A terrifying scene once occurred at the water level monitoring center of the Anqing section of the Yangtze River: the opening degree of the arc-shaped gate was stable at 4.5 meters, but the load data suddenly dropped sharply from 230 tons to 65 tons. The dispatcher urgently locked the gate - a diving inspection revealed that the crossbeam at the bottom of the gate had twisted into an S shape. This classic case validates the iron law of water conservancy projects: the degree of opening...

In front of the spillway tunnel of a large hydropower station by the Lancang River, engineers repeatedly checked the opening degree data on the control panel. The gate is driven by two hydraulic hoists with a thrust of 500 tons, but the opening degree value displayed in the main control room keeps fluctuating. The stroke of the hydraulic cylinder has been fed back by 75 centimeters, but the door top opening gauge only shows 68 centimeters - 7 centimeters...

Preface Amid the tense atmosphere at the flood control dispatching station, the water level information of several major rivers kept flashing. The operator is nervously watching the arc-shaped gate in the surveillance screen, ready to adjust the opening degree according to the instructions and control the downstream flow. But right after the opening and closing command was issued, the feedback value of the opening degree on the panel made one's heart race...

The weight of a thousand-pound deviation of 0.1° The slight change in the inclination Angle of the arc-shaped gate conceals a danger: Hinge settlement of 0.5° : It may cause the gate seal to fail, with a leakage rate of over 300 liters per second. Temperature deformation difference: A 40℃ temperature difference in summer causes metal deformation, which is equivalent to an 8cm deviation at the end of a 10-meter-span arc door. ...

I. Fatal Pain Points in Arc Gate Operation Due to the special structure of the arc-shaped gate, the consequences of losing control of the opening degree are more serious: An Angle deviation of 1° may cause a flow error exceeding 15%, leading to irrigation accidents. Hinge jamming: Slight deformation of the arc-shaped track will amplify the frictional resistance, increasing the risk of the drive motor burning out by 300...