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The mobile crawler crane is specific crane designed with either a telescopic boom or a lattice boom. These move upon the crawlers tracks. Since this crane is self-propelled, it could move around certain work locations without the need for a lot of set up. Because of their enormous size and weight, crawler cranes are rather pricey and even difficult to transport from one site to another. The crawler's tracks offer stability to the machinery and enable the crane to function without the use of outriggers, however, there are several units which do utilize outriggers. Moreover, the tracks provide the machine's movement.
Early Mobile Cranes
The very first mobile cranes were originally mounted to train cars. They moved along short rail lines that were specifically built for the project. When the 20th century arrived, the crawler tractor evolved and this brought the introduction of crawler tracks to the agricultural industry and the construction industry. Not long after, excavators adopted the crawler tracks and this further featured the equipment's versatility. It was not long after when manufacturers of cranes 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 first to mount its crane on crawler tracks in the nineteen twenties. It described the new equipment as a "locomotive crane, independent of tracks and moveable under its own power." By the mid-1920s, crawler tracks had become the preferred means of traction for heavy crane operations.
The Speedcrane
Developed by Charles and Ray 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 steam-powered, wheel-mounted, fifteen ton crane. During nineteen twenty five, a company known as 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.
Crown has made their RC 5500 Series to focus on the realistic difficulties faced in the workplace. This innovative model features intelligent technology and best-in-class ergonomics and comfort. Keeping the operator comfortable and safe normally leads to more efficiency.
3-Wheel Stand-Up Counterbalanced Truck
The company manufactures a 3-Wheel Stand-Up Counterbalanced Truck in capacities varying from 3000, 3500\three thousand five hundred and four thousand lb. capacity.
Performance Versatility
The Crown RC 5500 excels in a busy work environment. This unit achieves greatness whether it is operating on the dock or in an aisle. It is designed to offer the operator unmatched visibility, unparalleled ride control and the ultimate ergonomics. The exclusive FlexRide technology offered by Crown offers a suspended floorboard in order to eliminate a lot of the shock and vibration which operators should work with on a daily basis. Interestingly enough, a lot of the competitor's sit-down truck units are unable to match the lessened impact levels provided by the RC 5500 Series.
Visibility - Maximum visibility is provided for the operator from a side-stance position in both directions of travel. A low-profile provides a clear view mast as well a sculpted chassis allows the operators to be able to clearly see the fender, the fork tips and all around the truck. This optimum view enhances overall safety and reduces damage.
Speed - Top travel speeds are among the best within the business and achieved through Access 1 2 3 Technology combined with the latest AC traction control. Levels of performance could be custom tuned in order to match the application requirement or the operator's skill level.
Operator Safety & Comfort
The suspended floorboard offered by Crown's FlexRide greatly improves overall work performance by enhancing comfort and exhaustion is significantly lessened. The constant vibration and shock can result in extreme operator fatigue for those exposed to those motions everyday particularly during travel over expansion joints, rough surfaces and dock plates.
