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The mobile crawler crane is specific crane made with either a telescopic boom or a lattice boom. These move upon the crawlers tracks. Because this crane is self-propelled, it can move around particular work locations without the need for a lot of set up. Because of their huge size and weight, crawler cranes are fairly costly and even hard to transport from one site to another. The crawler's tracks provide the machine stability and allow the crane to work without utilizing outriggers, however, there are some models that do use outriggers. Furthermore, the tracks provide the movement of the machine.
Early Mobile Cranes
The first mobile cranes were initially mounted to train cars. They moved along short rail lines that were specifically made for the project. Once the 20th century arrived, the crawler tractor evolved and this brought the introduction of crawler tracks to the construction industry and the agricultural industry. Not long after, excavators adopted the crawler tracks and this further featured the versatility of the machine. It was not long after before crane manufacturers decided that the crawler track market was a safe bet.
The Very First Crawler Crane
Northwest Engineering, a crane company within the USA, was the first to mount its crane on crawler tracks during the nineteen twenties. It described the new equipment 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 amongst the first to attempt to replicate rail lines for cranes. Made in Fort Wayne, Indiana, the Speedcrane was fifteen ton, steam-powered, wheel-mounted crane. In the year 1925, a company called Manitowoc Shipbuilding Co, from Manitowoc, Wisconsin recognized the tracked crane's marketability and potential. They decided to team up with the Moore brothers so as to manufacture it and go into business.
Crown has made their RC 5500 Series to concentrate on the realistic challenges experienced within the workplace. This ground-breaking unit features intelligent technology and best-in-class comfort and ergonomics. Keeping the operator safe and comfortable usually results in more efficiency.
3-Wheel Stand-Up Counterbalanced Truck
The 3-Wheel Stand-Up Counterbalanced Truck comes in 3000, three thousand five hundred and 4000 lb. capacity.
Performance Versatility
Crown's RC 5500 have been designed to work efficiently in a busy work environment. Whether it is operating on the dock or in an aisle, this model 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 offers a suspended floorboard in order to eliminate a lot of the vibration and shock that operators must work with on a daily basis. Interestingly enough, many of the competitor's sit-down truck units could not match the reduced impact levels offered by the RC 5500 Series.
Visibility - From a side-stance position in both directions of travel, this model offer maximum visibility for the operator. A low-profile provides 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 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 industry and achieved. Performance levels are able to be custom tuned to be able to match the application needs or the operator's level of skill.
Operator Safety & Comfort
Crown's FlexRide has a suspended floorboard that can greatly improve the overall work performance of the worker by enhancing their comfort and lessening their exhaustion. The continuous shock and vibration can lead to extreme operator fatigue for those exposed to those motions everyday especially during travel over rough grounds, dock plates and expansion joints.
