Product introduction:

I. Basic Definition and Classification

A semi-automatic spreader is a mechanical device used for loading and unloading containers. While some of its operational components are automated, it still requires manual assistance to complete certain processes. Depending on its size and application range, semi-automatic spreaders are typically categorized into two specifications: 20-foot and 40-foot, to accommodate the loading and unloading needs of different-sized containers.

II. Working Principle

The working principle of a semi-automatic spreader primarily relies on mechanical structures and the elastic potential energy of springs During the lifting process, the spreader utilizes its self-weight and the force of the springs to rotate an intermediate axis, which subsequently engages the twistlocks into the corner castings of the container. Upon reaching the designated position, the spreader automatically unlocks and releases the container without manual intervention. Additionally, some semi-automatic spreaders are equipped with auxiliary devices such as rotating heads and hydraulic guide plates to adapt to different working conditions and enhance operational efficiency.

III. Structural Composition

A semi-automatic spreader primarily consists of a frame, twistlock devices, an operating mechanism, an anti-rotation device, lifting cables, and shackles. The frame serves as the main structure supporting the container. The twistlock devices lock onto the corner castings of the container. The operating mechanism controls the opening and closing of the twistlocks. The anti-rotation device ensures that the spreader does not rotate during lifting. Lastly, the lifting cables and shackles connect the spreader to the crane.

IV. Advantages and Characteristics

• Ease of Operation: Compared to fully manual spreaders, semi-automatic spreaders offer simpler operation, reducing the physical labor intensity for operators.

• Increased Efficiency: The higher level of automation minimizes manual intervention time, thereby enhancing the efficiency of container loading and unloading operations.

• Simple Structure: The relatively straightforward structure of semi-automatic spreaders makes maintenance and upkeep relatively easy.

• Versatility: They are suitable for handling various types and sizes of containers during loading and unloading operations.

V. Application Scenarios

Semi-automatic spreaders are widely used in ports, docks, cargo yards, and other locations requiring container loading and unloading operations. When paired with cranes, they efficiently perform tasks such as container lifting, transportation, and stacking

Our Services:
Act as a good adviser and assistant of client, we can help them to get rich and generous   returns  on their investment.

1. Pre-sale services:  
      a: Design customised project for clients.
      b: Design and manufcture products according to clients special requirement.
      c: Train technical personnel for clients.

2. Services during the sale:
      a: Help clients to find reasonable freight forwarders ahead of delivery.
      b: Help clients to draw solving plans.

3. After-sale services:
       a: Assist clients to prepare for the construction scheme.
       b: Install and debug equipment.
       c: Train the first-lin operators.
       d: Examine equipment.
       e: Take initiative to eliminate the troubles immediately.

If you are interested in our products, pls feel free to contact with us by email  or WECHAT/WHATAPP , if you can provide below inquiry informaion that would be better :
1:What is request  lifting capacity of spreader? 
What is type of spreader? Semi automatic container spreader, New I type spreader, motor spreader, hydraulic telescopic spreader or electro telescopic spreader? 

2:If what you need is telescopic spreader, please confirm it is hydraulic telescopic or electric telescopic? 

3:What is the using temperature of spreader? 

4:Will you match a rotator with the telescopic spreader? 

5.How many pcs do you need ?

6. Any special certificate request ?

7. Which port is the destination port ? 

Please never hesitate contact with me! Your reliable partner! 

My Whatsapp : +8615102153877