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The crawler crane is a specific type of mobile crane that is offered with either a lattice boom or a telescopic boom which moves upon crawler tracks. As this model is a self-propelled crane, it could move around a jobsite and accomplishing tasks without a lot of set-up. Due to their enormous weight and size, crawler cranes are rather pricey and even hard to transport from one place to another. The crawler's tracks offer the machine stability and enable the crane to function without utilizing outriggers, however, there are several units which do utilize outriggers. What's more, the tracks provide the equipment's movement.
Early Mobile Cranes
Initially, the very first mobile cranes were mounted to train cars and move along specifically designed short rail lines. 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, the crawler tracks were adopted by excavators and this further featured the machine's versatility. It was not long after before crane manufacturers decided that the crawler track market was a safe bet.
The Very First Crawler Crane
Around the 1920s, Northwest Engineering, a crane company in the USA, 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 middle part of the nineteen twenties, crawler tracks had become the preferred 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. Made within Fort Wayne, Indiana, the Speedcrane was 15 ton, steam-powered, wheel-mounted crane. During the year 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 in order 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 best-in-class ergonomics and comfort and intelligent technology. Keeping the operator safe and comfortable usually results in more efficiency.
3-Wheel Stand-Up Counterbalanced Truck
The company manufactures a 3-Wheel Stand-Up Counterbalanced Truck in capacities varying from three thousand, 3500\three thousand five hundred and 4000 lb. capacity.
Performance Versatility
Crown's RC 5500 have been designed to work efficiently in a busy work setting. Whether it is operating in an aisle or on the dock, this model achieves greatness. It has been designed to provide the operator unparalleled ride control, unmatched visibility and the ultimate 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 need to work with on a daily basis. Interestingly enough, a lot of the competitor's sit-down truck models can not 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 improves overall safety and lessens damage.
Speed - Through Access 1 2 3 Technology combined with the newest AC traction control, top travel speeds are among the best within the business and achieved. Levels of performance can be custom tuned in order to match the operator's skill level or the application requirement.
Operator Safety & Comfort
Crown's FlexRide has a suspended floorboard that can greatly improve the overall work performance of the worker by improving their comfort and lessening their exhaustion. The continuous vibration and shock could lead to severe operator exhaustion for those exposed to those motions on a daily basis especially during travel over expansion joints, rough surfaces and dock plates.
