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The mobile crawler crane is specific crane made with either a lattice boom or a telescopic boom. These move upon the crawlers tracks. Since this crane is self-propelled, it can move around certain work sites without the need for much set up. Due to their enormous size and weight, crawler cranes are fairly costly and even hard to transport from one site to another. The crawler's tracks offer stability to the machinery and enable the crane to work without the use of outriggers, however, there are several units which do utilize outriggers. What's more, the tracks provide the machine's movement.
Early Mobile Cranes
The very first mobile cranes were initially mounted to train cars. They moved along short rail lines which were particularly constructed for the project. Once the 20th century arrived, the crawler tractor changed 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 featured the machine's versatility. It was not long after before manufacturers of cranes decided that the crawler track market was a safe bet.
The Very First Crawler Crane
Northwest Engineering, a crane manufacturer in the USA, was the very first to mount its crane on crawler tracks in the 1920s. It described the new machine 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
The Moore Speedcrane, developed by Charles and Ray Moore of Chicago, Illinois was one of the first attempts to replicate the rails for cranes. Manufactured within Fort Wayne, Indiana, the Speedcrane was 15 ton, steam-powered, wheel-mounted crane. During 1925, a company referred to as Manitowoc Shipbuilding Co, from Manitowoc, Wisconsin recognized the tracked crane's marketability and potential. They decided to team up with the Moore brothers in order to produce it and go into business.
The Crown RC 5500 Series was made on a vision that concentrates on realistic difficulties in the workplace. This innovative unit features best-in-class ergonomics and comfort and intelligent technology. Keeping the operator comfortable and safe normally results in more efficiency.
3-Wheel Stand-Up Counterbalanced Truck
The company manufactures a 3-Wheel Stand-Up Counterbalanced Truck in capacities ranging from three thousand, 3500\three thousand five hundred and four thousand lb. capacity.
Performance Versatility
Crown's RC 5500 have been made to work efficiently in a busy work environment. Whether it is operating on the dock or in an aisle, this unit achieves greatness. It has been made to offer the operator unparalleled ride control, unmatched visibility and the best ergonomics. The exclusive FlexRide technology offered by Crown provides a suspended floorboard in order to eliminate a lot of the shock and vibration which operators must work with on a daily basis. Interestingly enough, many of the competitor's sit-down truck units are unable to match the lessened impact levels provided by the RC 5500 Series.
Visibility - From a side-stance position in both directions of travel, this unit provide maximum visibility for the operator. A low-profile offers a clear view mast as well a sculpted chassis allows the operators to be able to clearly see the fork tips, all around the truck and the fender. This optimum view reduces damage and improves overall safety.
Speed - Through Access 1 2 3 Technology combined with the newest AC traction control, top travel speeds are amongst the best in the industry and achieved. Performance levels are able to be custom tuned in order to match the application requirement or the operator's level of skill.
Operator Safety & Comfort
Crown's FlexRide has a suspended floorboard that could greatly enhance the overall work performance of the worker by enhancing their comfort and lessening their fatigue. The continuous shock and vibration could lead to severe operator exhaustion for those exposed to those motions on a daily basis specially during travel over rough grounds, dock plates and expansion joints.
