How are ship cranes calibrated and serviced to ensure accuracy?

Calibration and maintenance of ship cranes is a key step in ensuring the accuracy and reliability of the equipment. The following are the general steps for calibration and repair:

Calibration steps:

Sensor calibration:

Calibrate hook position sensors, load sensors, etc., to ensure they accurately sense and record the status of the crane.

Using professional calibration equipment, according to the guidance provided by the crane manufacturer, carry out the zero point calibration and sensitivity adjustment of the sensor.

Control system calibration:

Calibrate the control system to ensure that the individual control buttons, switches and remote controls function properly and are consistent with the actual crane action.

Check the wiring of the electrical system to ensure that the cable is securely connected to prevent electrical problems resulting in control errors.

Load test:

Carry out load test to verify the accuracy of load sensor. Tests can be performed using known weights to compare actual and expected readings.

Rotation system calibration:

Calibrate the crane's slewing system to ensure the accuracy and smoothness of the slewing motion. Adjust the rotary motor and sensor so that the crane can accurately stop at the specified position during the rotation.

Limit switch calibration:

Calibrate the limit switch to ensure that the limit switch at each working position can be accurately triggered to avoid exceeding the set working range.

Remote control calibration:

If the crane is equipped with a remote control, calibrate the remote control to ensure that the signal transmission of the remote control is accurate and reliable.

Maintenance steps:

Regular inspection:

Carry out regular inspection, including hook, rope, sensor, hydraulic system, electrical system, etc. Check for worn, damaged or loose parts.

Lubrication maintenance:

Check the lubrication system regularly to ensure that the various mechanical components and transmission systems are sufficiently lubricated. Replace lubricating oil in time to prevent failure caused by insufficient lubrication.

Fastening bolts and connections:

Periodically check the bolts and connections of the individual components to ensure that they are securely fastened. Loose bolts may cause instability and inaccurate operation of the device.

Electrical system inspection:

Check electrical systems regularly, including cables, switches, circuit breakers, etc. Ensure that the electrical system is operating properly to avoid safety problems caused by electrical failures.

Hydraulic system maintenance:

Check the hydraulic system regularly, including the state of the hydraulic oil, the working condition of the pump, the tightness of the valve, etc. Repair or replace faulty hydraulic components.

Parts replacement:

Replace vulnerable parts regularly, such as ropes, bearings, seals, etc. According to the maintenance manual provided by the manufacturer, replace parts on time to extend the life of the equipment.

Fault analysis and repair:

If a fault is found, it is necessary to quickly analyze the fault, find out the cause and take appropriate repair measures. You can follow the troubleshooting procedure provided in the device manual.

Maintenance records:

Record the content, time and operator of each repair and calibration. Establishing the maintenance history of the equipment helps to better manage and predict the maintenance needs of the equipment.

Through regular calibration and maintenance work, it is possible to ensure that the ship crane always maintains an accurate and reliable operating state, reducing the risk of accidents and improving work efficiency.