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The crawler crane is a particular type of mobile crane which is available with either a lattice boom or a telescopic boom that moves upon crawler tracks. As this unit is a self-propelled crane, it could move around a jobsite and accomplishing jobs without much set-up. Because of their huge weight and size, crawler cranes are fairly pricey and even difficult to transport from one site to another. The crawler's tracks provide the machinery stability and enable the crane to work without using outriggers, although, there are some units that do utilize outriggers. Furthermore, the tracks provide the movement of the machine.
Early Mobile Cranes
Initially, the first mobile cranes were mounted to train cars and move along specially built short rail lines. When the 20th century arrived, the crawler tractor changed and this brought the introduction of crawler tracks to the construction business and the agricultural industry. Not long after, the crawler tracks were adopted by excavators and this further featured the versatility of the machine. It was not long after when crane manufacturers decided that the crawler track market was a safe bet.
The Very First Crawler Crane
Northwest Engineering, a crane company in the United States, was the first to mount its crane on crawler tracks during the 1920s. It described the new machinery 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 operations.
The Speedcrane
The Moore Speedcrane, developed by Charles and Ray Moore of Chicago, Illinois was amongst the first attempts to copy the rails for cranes. Manufactured in Fort Wayne, Indiana, the Speedcrane was 15 ton, steam-powered, wheel-mounted crane. In 1925, a company called 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 to be able to produce it and go into business.
Crown has designed their RC 5500 Series to focus on the realistic difficulties faced within the workplace. This ground-breaking unit features best-in-class comfort and ergonomics and intelligent technology. Keeping the operator comfortable and safe generally leads to more productivity.
3-Wheel Stand-Up Counterbalanced Truck
The 3-Wheel Stand-Up Counterbalanced Truck comes in three thousand, three thousand five hundred and 4000 lb. capacity.
Performance Versatility
The Crown RC 5500 excels in a busy work setting. This unit achieves greatness whether it is operating on the dock or in an aisle. It is made to provide the operator unmatched visibility, unparalleled ride control and the best ergonomics. The exclusive FlexRide technology offered by Crown offers a suspended floorboard so as to eliminate a lot of the shock and vibration which operators should work with on a daily basis. Interestingly enough, many of the competitor's sit-down truck models 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 offers a clear view mast as well a sculpted chassis enables the operators to be able to clearly see all around the truck, the fender and the fork tips. This optimum view enhances overall safety and reduces damage.
Speed - Through Access 1 2 3 Technology combined with the newest AC traction control, top travel speeds are amongst the best in the business and achieved. Performance levels are able to be custom tuned to be able to match the operator's skill level or the application requirement.
Operator Safety & Comfort
Crown's FlexRide has a suspended floorboard which could greatly enhance the overall work performance of the worker by improving their comfort and reducing their fatigue. The continuous shock and vibration can lead to extreme operator exhaustion for those exposed to those motions everyday specially during travel over expansion joints, rough floors and dock plates.
