From the principle of portal structure, the way of efficient loading and unloading of port crane is discussed

Port crane is a large mechanical equipment used for loading and unloading goods in the port, and its working principle mainly involves the following aspects:
1. Structure composition
The port crane is mainly composed of the following parts:
Steel structure: including boom, tower body, gantry, etc., to provide a stable support and bearing structure for the crane.
Lifting mechanism: composed of motor, reducer, reel, wire rope, etc., responsible for lifting and lowering goods.
Amplitude changing mechanism: used to change the amplitude of the lifting arm to adapt to the loading and unloading of different distances.
Rotary mechanism: enables the crane to rotate in the horizontal direction to expand the scope of operation.
Walking mechanism: Used for the crane to walk on the track of the port dock in order to adjust the position.
Second, the working process
Lifting operation:
When the goods need to be lifted, the motor of the lifting mechanism starts and drives the drum to rotate through the reducer.
The wire rope wound on the drum is then retracted, causing the hook to rise or fall.
After the hook is connected with the goods, the goods are lifted to the required height through the action of the lifting mechanism.
Amplitude operation:
According to the position of the goods and the loading and unloading requirements, the amplitude of the lifting arm is adjusted.
Usually hydraulic drive or mechanical transmission is used to change the Angle of the boom.
The variable amplitude operation can enable the crane to load and unload between goods at different distances and improve the operation efficiency.
Rotary operation:
The slewing mechanism enables the crane to rotate horizontally in order to move cargo from one position on a ship or dock to another.
The slewing mechanism is usually composed of a motor, a reducer and a slewing support, which realizes the slewing movement of the crane by controlling the speed and direction of the motor.
Walking operation:
The walking mechanism enables the crane to walk on the track of the port terminal in order to adjust the position and align the cargo.
The walking mechanism is usually composed of a motor, a reducer, a wheel and a track, which realizes the walking motion of the crane by controlling the speed and direction of the motor.
3. Control system
The control system of the port crane is its core part, which is responsible for coordinating the actions of various institutions to ensure the safe and efficient operation of the crane. The control system mainly includes the following aspects:
Electrical control system: composed of motor controller, frequency converter, sensor, etc., used to control the lifting, amplitude, rotation and walking of the crane.
Hydraulic control system: used to control the amplitude of the crane and the hydraulic cylinder in the lifting mechanism, to achieve the amplitude adjustment of the boom and the lifting of goods.
Safety protection system: including limit switch, overload protection device, anemometer, etc., used to ensure that the crane operates within a safe range to prevent accidents.
In short, the port crane realizes the loading, unloading and handling of goods through the coordinated action of lifting, amplitude changing, turning and walking mechanisms. Its working principle involves mechanical, electrical, hydraulic and other fields of technology, requiring a high degree of safety and reliability.