Container House Spreaders Images

Currently, images of container house spreaders cannot be provided directly, but their common types, structural features, and working principles can be described.

I. Common Types Container house spreaders can be classified into fixed, telescopic, and rotating types based on their structure. Fixed spreaders are only suitable for single-specification containers (such as 20-foot or 40-foot containers), featuring a simple structure and light weight. Telescopic spreaders can adjust their length through hydraulic or electric drive to accommodate containers of different specifications ranging from 20 feet to 45 feet. Rotating spreaders add a rotation function to the telescopic type, allowing adjustment of the container's direction and enhancing operational flexibility.

II. Structural Features

1. Main Frame: Typically welded from high-strength steel (such as Q345), ensuring sufficient strength and rigidity when carrying containers. For example, the lifting beam of a spreader may be welded from rectangular steel pipes or plates, with pin holes and lugs at both ends for connecting upper and lower lifting slings.
2. Locking Mechanism: The core component is the twist-lock device, located at the four corners of the spreader. The twist-locks rotate 90 degrees to engage with the internal slots of the container's top corner fittings, forming a rigid connection. Some spreaders use a semi-automatic elastic latch control structure, allowing the twist-locks to be opened and closed by pulling a rope on the ground without auxiliary components.
3. Connecting Components: These include pins, lifting slings, and shackles. Pins are used to connect the lifting beam to the lifting slings, which are directly attached to the crane hook. Shackles are used to secure the lifting slings to the connection holes at the bottom of the container.

III. Working Principle

1. Lowering and Alignment: The spreader is lowered above the container, with the twist-lock heads aligned with the top corner fitting holes. Guide plates assist in precise positioning.
2. Insertion and Locking: The spreader continues to descend, inserting the twist-lock heads into the corner fitting holes. Subsequently, the twist-locks rotate 90 degrees to engage with the slots, forming a rigid connection. At this point, the safety interlock mechanism activates, ensuring that the crane can only lift the container after all four twist-locks are securely locked.
3. Lifting and Transportation: The crane lifts the container using the lifting slings and transports it to the target location. After arrival, the twist-locks rotate 90 degrees in the opposite direction to release the container.

IV. Application Scenarios Container house spreaders are widely used in ports, logistics parks, construction sites, and other scenarios for lifting, transferring, and stacking container houses. For example, in construction expansion projects, spreaders can quickly disassemble and reassemble modular container houses, improving construction efficiency.