Comedil Construction Cranes Fresno

Crawler Crane

The crawler crane is a specific kind of mobile crane that is available with either a lattice boom or a telescopic boom which moves upon crawler tracks. Because this unit is a self-propelled crane, it is capable of moving around a jobsite and completing tasks without a lot of set-up. Because of their enormous weight and size, crawler cranes are fairly expensive and even hard to transport from one place to another. The crawler's tracks provide stability to the machinery and enable the crane to function without utilizing outriggers, although, there are some models that do utilize outriggers. As well, the tracks provide the movement of the equipment.



Early Mobile Cranes

The first mobile cranes were initially mounted to train cars. They moved along short rail lines which were specifically built for the project. When the 20th century arrived, the crawler tractor changed and this brought the introduction of crawler tracks to the agricultural business as well as the construction industry. Not long after, excavators adopted the crawler tracks and this further showcased the versatility of the machinery. It was not long after before crane manufacturers decided that the crawler track market was a safe bet.



The Very First Crawler Crane

Northwest Engineering, a crane company within the United States, was the very first to mount its crane on crawler tracks during the 1920s. 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 preferred means of traction for heavy crane uses.



The Speedcrane

The Moore Speedcrane, developed by Ray and Charles Moore of Chicago, Illinois was amongst the first attempts to copy the rails for cranes. Manufactured within Fort Wayne, Indiana, the Speedcrane was a steam-powered, wheel-mounted, 15 ton crane. During 1925, a company called Manitowoc Shipbuilding Co, from Manitowoc, Wisconsin recognized the tracked crane's marketability and potential. They decided to team up with the Moore brothers to be able to manufacture it and go into business.

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