A grab-type crane trolley is designed for operation under demanding loading and lifting conditions where additional dynamic loads may occur due to grab handling operations. Such conditions require enhanced reliability and a higher duty classification compared to standard crane trolleys.

Grab-type trolleys are widely used across various industrial sectors:

• Mining and metallurgical industries — for handling raw materials, coal, and ore;
• Port operations and shipbuilding — for rapid loading and unloading of bulk materials;
• Construction — for handling building materials;
• Agriculture — for transporting fertilizers, grain and compound feed.

Structurally, grab-type trolleys are divided into several types depending on the grab closing method:

 1. Self-closing grab — in this configuration, the grab closes under its own weight, therefore the trolley is equipped only with a hoisting mechanism that performs the primary loading and unloading operations.

 2. Rope-operated closing mechanism — when a rope closing system is used, the trolley is equipped with two main mechanisms: one for hoisting the load and one for controlling the grab closing function. The rope mechanism enables controlled opening and closing of the grab, accelerating unloading operations.

 3. Hydraulic or electric closing drives — in this configuration, the trolley is equipped with additional systems for supplying hydraulic fluid (for hydraulic drives) or electrical power (for electric drives). These may include cable reel systems for supplying hydraulic hoses and/or power cables.

Such design solutions ensure reliable operation of the grab-type crane trolley under various load conditions, maintaining stability and controllability even in demanding operating environments.

On our website, you can review selected completed projects. We manufacture grab-type trolleys tailored to your individual technical specifications and operational requirements. To purchase COSE grab-type trolleys, please contact our managers for consultation using the phone numbers listed on the website.