What types of container spreader can be divided into?

Container spreader by structure can be divided into basically non-retractable fixed spreader and telescopic spreader two categories. Fixed spreader can be divided into stand-alone spreader and master-slave spreader (also known as child-type spreader).

First, fixed spreader

1, independent spreader. From the connection with the crane, it can be divided into fixed and separable.

A, fixed-linked spreader is generally suitable for lifting a single specification of the container occasions, generally directly to the moving pulley installed on the spreader. The type of spreader lock mechanism is generally driven by power, so the crane with a spreader lock control circuit. The advantages of such spreaders can save the lifting height, because the spreader with multi-point connection, you can greatly reduce the spread of the spreader, while the spreader without rotation, using the spreader itself with a simple guide, can greatly improve the work effectiveness. As the wire rope directly spread the spreader on the pulley, the replacement of the spreader will be relatively more trouble.

B, can be sub-linked spreader, the general application of container box miscellaneous but the lifting is not very frequent occasions or need to take into account the lifting of containers and other general cargo occasions. This type of spreader in the production factory has been spreader and sling connected, the user only need to hang on the crane hanging on the crane hook can be. The type of spreader lock mechanism is generally used heavy hammer or ratchet type, no additional power source installation, installation is very convenient. Because the crane hook is generally no power can be rotated, resulting in hanging on the hook on the spreader will follow the rotation, so the use of such spreaders in the following assistance to the box, in the yard on the stack over 2 layer, not suitable for the use of such spreaders.

2, master-slave spreader (child-type spreader). The 20-foot spreader is a 20-foot spreader with a 20-foot spreader for lifting a 20-foot container and a 20-foot lift when lifting a 40-foot container. Foot spreader, and lift the 40-foot container with a 40-foot spreader. The 20-foot spreader and the 40-foot spreader each have a power source to drive the lock mechanism. As the 40-foot spreader hanging point size larger, therefore, 40 feet spreader heavier, generally more than 5t, so the crane from the weight of more than 45t to use this spreader. The advantage is that the relative telescopic spreader, the spreader low price, simple structure, easy maintenance.

Second, telescopic spreader

The telescopic spreader consists of two parts: fixed frame and telescopic beam. The telescopic beam is telescopic driven by telescopic drive mechanism, so it can adapt to different specifications of the container. Spreader and rotation of the spreader is generally driven by the hydraulic (now a small number of spreaders using pure motor drive), in the crane driver room by the driver to control. As a result of the installation of a number of sensors on the spreader, and the lifting of the crane interlock, you can greatly improve the safety of lifting containers lifting, reduce the risk of various types. In order to improve the efficiency and adapt to the lifting requirements of different cranes, the manufacturer has installed various mechanisms such as hydraulic guide plate, tilting device, rotating mechanism and center of gravity adjustment mechanism, which makes the telescopic spreader more and more complicated, Function more and more. Telescopic spreader for professional container terminals, yard and other occasions for frequent lifting of various types of containers, so the telescopic spreader is the current large port container terminal with the most widely used a spreader. This type of spreader structure is complex, the weight is also large, about 8 ~ 10t; maintenance is also more complex, generally need professionals to repair, repair cycle is also long.