Shanghai ENJUE Machinery Equipment Co., Ltd is one of the most experienced manufacturers and suppliers of 20‘semi-auto spreaders in China. If you're going to buy custom 20‘semi-auto spreaders made in China, welcome to get more information from our factory. For price consultation, contact us.
This is a lightweight, Enjue semi-automatic spreader specifically designed for 20- and 40-foot standard containers. It employs a purely mechanical interlocking mechanism, requiring no external power supply or hydraulic system; the synchronous opening and closing of the four rotary locks is achieved solely through the lifting and lowering of the hook.
With a self-weight of 2.0 tons and a safe working load of 32 tons, it is an ideal lifting tool for ports, railway freight yards, and container yards, balancing efficiency and safety.
Core Application Value
1. Foolproof "Lift and Release" Operation, Say Goodbye to Complex Training
Traditional container spreader requires workers to climb and manually operate the four corner locks. This product, through the linkage design of the eccentric lock control unit and crank-connecting rod mechanism, achieves semi-automatic operation: "locking upon lifting and unlocking upon lowering." New employees only need to observe once to learn how to operate it, significantly reducing the risk of human error.
2. Lightweight Doesn't Mean Fragile, 32-Ton Heavy Load Verified
While maintaining a lightweight 2.0-ton self-weight (facilitating rapid movement and return to position on the ground), its Safe Working Load (SWL) still reaches 32 tons, providing a sufficient safety factor. Suitable for frequent lifting operations and scenarios sensitive to semi-auto spreaders' weight (such as mobile cranes or light gantry cranes).
3. Enhanced Details for Harsh Working Conditions
Buffer Spring System: Absorbs mechanical impact when the turnlock rotates into the correct position, preventing jamming from hard collisions.
Guide plates assist positioning: Large guide plates are installed at all four corners of the spreader, easily guiding the semi-auto container spreader to align with the container corner fittings, even in poor visibility or wind conditions.
Purely mechanical reliability: No risk of hydraulic oil leakage or water ingress into electrical components, making it especially suitable for dusty, humid, or temperature-sensitive outdoor storage yards.
| Item | Data |
|---|---|
| Applicable container | 20-foot ISO Standard Container |
| The SWL of Spreader | 32 T |
| Deadweight | 2.0 T |
| Wire rope Dia | 32 mm |
| Dimension | 6046 × 2435 × 700 mm |
| Minimum use height | 2650 mm |
Working principles of the semi-automatic spreaders
When the spreader is in a no-load state and descends close to the container, the eccentric locking mechanism is automatically triggered, causing the sliding unit to enter the "release" state. At this time, the spreader continues to descend slowly, the sliding unit rolls smoothly along the guide groove, and drives the buffer spring to start storing energy. Driven by the spring force, the turnlock gradually rotates 90°, precisely inserting into the container corner casting hole, completing the initial locking.
When the spreader begins to lift, as the weight of the spreader and the container cargo gradually applies load, the turnlock further tightens under the vertical pulling force, forming a self-locking state, ensuring absolute safety and stability during the lifting process.
During the unloading stage, the operation process is equally simple: after the container is placed steadily on the ground, the spreader continues to descend a small distance (about several tens of millimeters). At this time, the eccentric locking mechanism is automatically triggered in reverse, the sliding unit returns, and the turnlock rotates 90° in the opposite direction to unlock. The spreader then disengages from the container and can be easily lifted away, ready for the next operation.
The entire locking and unlocking process requires no manual operation of the turnlock, nor does it require an external power or hydraulic system. It is fully completed by the self-adaptive action of the mechanical mechanism, improving operational efficiency while reducing operating risks and maintenance costs.
Why Choose Enjue Semi-Automatic Spreaders?
Cost-Free: No need for a separate hydraulic station or electrical control system for the spreader.
Worry-Free: Minimal potential for mechanical failure; maintenance only requires periodic lubrication of pins and inspection of springs.
Labor-Saving: One person and one vehicle can complete container loading and unloading; no ground workers are needed to manually unlock th
e spreader.
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