Trunnion Transportation System for Mobile Lift Cranes

The connection system is segmented into modular components: the carbody with integrated connection ears, the crawler with matching connection ears, and removable pins with retaining structures. This segmentation allows the connection to be quickly assembled and disassembled by simply inserting and securing pins, rather than threading multiple bolts, while maintaining structural integrity through the distributed pin connection system.

Pins serve as intermediary elements that mediate the connection between the carbody and crawler. These pins include retaining structures (such as retaining plates or locking mechanisms) that prevent accidental disengagement while allowing controlled removal. The pins transfer loads between the connection ears of the carbody and crawler, providing a simplified alternative to bolted connections that reduces assembly complexity and time.

The connection system divides the load-bearing function across multiple discrete pins rather than requiring numerous large bolts. Each pin is a simple, standardized component that can be quickly inserted and secured, reducing the skill level and time required for assembly while distributing structural loads across multiple connection points between the carbody and crawler.

The connection system incorporates self-aligning and self-securing features. The connection ears on the carbody and crawler are positioned to naturally guide the pins into place, and the retaining structures on the pins automatically engage to secure the connection. This self-service mechanism reduces the need for complex alignment procedures and multiple fastening operations, significantly improving setup efficiency.