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How do cranes lift shipping containers?

Jun 06, 2025

Enjue Container spreader:
Structure: The four corners of the spreader are provided with a twistlock device and a guide device.
Working principle: through the hydraulic system to drive the twistlock and container corner fittings to combine and disengage. When the twist lock enters the corner parts hole of the container, the twist lock is in a closed state under the action of the hydraulic system, and the container can be lifted at this time; When the twistlock is unlocked, the twistlock can freely enter and exit the top corner hole of the container, and the container spreader can be detached from the container.

lifting spreader

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Guides:
Purpose: Plays a positioning role when the spreader is close to the container to ensure that the twistlock can be accurately inserted into the lock hole of the container.
Common type: deflector type, the end of which is a corner pyramid made of steel plate, which can be rotated 180° and downward when used, and is just set on the four corners of the container.

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