Comedil Construction Cranes Tucson

Crawler Crane

The mobile crawler crane is specific crane made with either a lattice boom or a telescopic boom. These move upon the crawlers tracks. As this crane is self-propelled, it could move around particular work sites without the need for much set up. Due to their huge size and weight, crawler cranes are are hard to transport from one location to another and are fairly pricey. The crawler's tracks provide the equipment stability and allow the crane to work without the use of outriggers, although, there are several models that do use outriggers. In addition, the tracks provide the movement of the equipment.



Early Mobile Cranes

Originally, the very first mobile cranes were mounted to train cars and move along specially built short rail lines. When the 20th century arrived, the crawler tractor evolved and this brought the introduction of crawler tracks to the construction business and the agricultural business. Not long after, the crawler tracks were adopted by excavators and this further showcased the equipment's versatility. It was not long after when manufacturers of cranes decided that the crawler track market was a safe bet.



The First Crawler Crane

Around the 1920s, Northwest Engineering, a crane manufacturer in the United States, mounted its first crane on crawler tracks. It described the new equipment as a "locomotive crane, independent of tracks and moveable under its own power." By the middle part of the 1920s, crawler tracks had become the chosen means of traction for heavy crane uses.



The Speedcrane

Developed by Ray and Charles Moore of Chicago, Illinois; the Moore Speedcrane was one of the first to attempt to copy rail lines for cranes. Manufactured in Fort Wayne, Indiana, the Speedcrane was a wheel-mounted, steam-powered, 15 ton crane. During the year 1925, a company called Manitowoc Shipbuilding Co, from Manitowoc, Wisconsin recognized the potential and the marketability of the tracked crane. They decided to team up with the Moore brothers so as to produce it and go into business.

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