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The crawler crane is a specific kind of mobile crane which is offered with either a lattice boom or a telescopic boom that moves upon crawler tracks. Because this unit is a self-propelled crane, it could move around a jobsite and completing jobs without much set-up. Because of their huge weight and size, crawler cranes are rather expensive and even hard to transport from one location to another. The crawler's tracks offer the machinery stability and enable the crane to function without the use of outriggers, although, there are some models that do utilize outriggers. In addition, 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 which were specifically constructed for the project. Once the 20th century arrived, the crawler tractor evolved and this brought the introduction of crawler tracks to the agricultural industry as well as the construction industry. Not long after, the crawler tracks were adopted by excavators and this further featured the versatility of the machinery. It was not long after when manufacturers of cranes decided that the crawler track market was a safe bet.
The Very First Crawler Crane
Around the 1920s, Northwest Engineering, a crane manufacturer in the United States, mounted its very first crane on crawler tracks. It described the new machinery as a "locomotive crane, independent of tracks and moveable under its own power." By the mid-1920s, crawler tracks had become the chosen means of traction for heavy crane uses.
The Speedcrane
Developed by Charles and Ray Moore of Chicago, Illinois; the Moore Speedcrane was among the first to attempt to replicate rail lines for cranes. Manufactured within Fort Wayne, Indiana, the Speedcrane was a wheel-mounted, steam-powered, fifteen ton crane. During 1925, a company called Manitowoc Shipbuilding Co, from Manitowoc, Wisconsin recognized the marketability and the potential of the tracked crane. They decided to team up with the Moore brothers so as to manufacture it and go into business.
The Crown RC 5500 Series was made on a vision that focuses on realistic difficulties in the workplace. This ground-breaking unit features intelligent technology and best-in-class ergonomics and comfort. Keeping the operator comfortable and safe usually leads to more productivity.
3-Wheel Stand-Up Counterbalanced Truck
The company produces a 3-Wheel Stand-Up Counterbalanced Truck in capacities varying from three thousand, 3500\three thousand five hundred and 4000 pound capacity.
Performance Versatility
Crown's RC 5500 have been made to work effectively in a busy work environment. Whether it is operating in an aisle or on the dock, this unit achieves greatness. It has been made to provide the operator unmatched visibility, unparalleled ride control and the ultimate ergonomics. The exclusive FlexRide technology provided by Crown offers a suspended floorboard so as to eliminate a lot of the shock and vibration that operators must work with each and every day. Interestingly enough, a lot of the competitor's sit-down truck units could not match the reduced impact levels offered by the RC 5500 Series.
Visibility - Maximum visibility is offered for the operator from a side-stance position in both directions of travel. A low-profile offers a clear view mast as well a sculpted chassis enables the operators to be able to clearly see the fender, the fork tips and all around the truck. This optimum view improves overall safety and lessens damage.
Speed - Through Access 1 2 3 Technology combined with the latest AC traction control, top travel speeds are amongst the best in the industry and achieved. Levels of performance can be custom tuned in order to match the operator's skill level or the application needs.
Operator Safety & Comfort
The suspended floorboard offered by Crown's FlexRide greatly enhances overall work performance by improving comfort and exhaustion is greatly reduced. The continuous vibration and shock could lead to extreme operator exhaustion for those exposed to those motions on a daily basis particularly during travel over expansion joints, rough floors and dock plates.
