Drag chains in dockyard cranes

Drag Chains in Dockyard Cranes


Dockyard cranes play a crucial role in the efficient operation of ports and shipyards. These cranes are designed to handle heavy loads and work in challenging environments. One essential component of dockyard cranes is the drag chain, which ensures the safe and reliable transmission of power and control signals to various moving parts. In this article, we will explore the significance of drag chains in dockyard cranes and how they contribute to the smooth operation of these powerful machines.

The Function of Drag Chains

Drag chains, also known as cable carriers or energy chains, are flexible conduits that house and protect cables, hoses, and other vital components. They provide a secure pathway for electrical, hydraulic, and pneumatic connections, allowing uninterrupted communication and power transmission while accommodating the crane’s movement. By preventing entanglement and excessive bending, drag chains ensure the reliability and longevity of the cables and hoses within the crane, reducing the risk of downtime and costly repairs.

Applications of Drag Chains

Drag chains find extensive use in various applications within dockyard cranes. Let’s explore some of the key areas where drag chains play a vital role:

1. Hoisting System

The hoisting system of a dockyard crane is responsible for lifting and lowering heavy loads. Drag chains ensure the seamless transmission of power and control signals to the hoist motor, allowing precise and efficient operation.

2. Trolley System

The trolley system enables the horizontal movement of the crane’s load. Drag chains protect the cables and hoses that supply power and control signals to the trolley motor, ensuring smooth and reliable movement.

3. Slewing System

The slewing system allows the crane to rotate horizontally. Drag chains provide a flexible conduit for the cables and hoses required for the slewing motor, enabling continuous and precise rotation.

4. Traveling System

The traveling system allows the crane to move along the rails. Drag chains safeguard the cables and hoses that power the crane’s travel motor, ensuring uninterrupted movement and positioning accuracy.

Advantages of Drag Chains

Drag chains offer several benefits that make them indispensable in dockyard cranes:

1. Protection

Drag chains protect cables, hoses, and other components from external influences such as abrasion, impact, and exposure to harsh environments. This protection increases the lifespan of the crane’s vital connections, reducing maintenance and replacement costs.

2. Flexibility

The inherent flexibility of drag chains allows them to accommodate the dynamic movements of dockyard cranes. They can withstand bending, twisting, and lateral forces without compromising the integrity of the cables and hoses inside.

3. Safety

By preventing cable entanglement and reducing the risk of tripping hazards, drag chains contribute to a safer working environment. They also minimize the chances of electrical or hydraulic failures, enhancing overall operational safety.

Our Company and Products

At our leading company in the Chinese chain market, we specialize in the production of high-quality drag chains and related products. Our wide range of offerings includes flexible chains, plastic drag chains, bushchains, plastic chains, tabletop chains, multiflex chains, and more. With 300 sets of various fully automatic CNC production equipment and automated assembly facilities, we ensure the precision and efficiency of our products.

We take pride in our commitment to delivering top-notch products, competitive prices, and attentive customer service. We welcome custom orders based on customer specifications and samples. Connect with us today to experience the excellence of our drag chains and other chain-related solutions.

Author: Czh