Cranes
They can either be controlled from an operator in a cab that travels along with the crane, by a push button pendant control station, or by radio type controls. The crane operator is ultimately responsible for the safety of the crews and the crane. Medieval cranes Cranes of the Middle Ages were used to build the cathedrals of Europe. The crane was fixed on top of a wall as it was being constructed and was powered by men that ran inside of two large wheels on each side. Cranes were also used in medieval ports and in shipyards. Mobile cranes The most basic type of crane consists of a steel truss or telescopic boom mounted on a mobile platform, which could be a rail, wheeled, or even on a cat truck. The boom is hinged at the bottom and can be either raised or lowered by cables or hydraulic cylinders. Telescopic crane This type of crane offers a boom that consists of a number of tubes fitted one inside of the other. A hydraulic mechanism extends or retracts the tubes to increase or decrease the length of the boom. Tower crane The tower crane is a modern form of a balance crane. When fixed to the ground, tower cranes will often give the best combination of height and lifting capacity and are also used when constructing tall buildings. Truck mounted crane Cranes mounted on a rubber tire truck will provide great mobility. Outriggers that extend vertically or horizontally are used to level and stabilize the crane during hoisting. Rough terrain crane A crane that is mounted on an undercarriage with four rubber tires, designed for operations off road. The outriggers extend vertically and horizontally to level and stabilize the crane when hoisting. These types of cranes are single engine machines where the same engine is used for powering the undercarriage as it is for powering the crane. In these types of cranes, the engine is normally mounted in the undercarriage rather than in the upper portion. Loader crane A loader crane is a hydraulically powered articulated arm fitted to a trailer, used to load equipment onto a trailer. The numerous sections can be folded into a small space when the crane isn't in use. Overhead crane Also refered to as a suspended crane, this type is normally used in a factory, with some of them being able to lift very heavy loads. The hoist is set on a trolley which will move in one direction along one or two beams, which move at angles to that direction along elevated or ground level tracks, often mounted along the side of an assembly area. In the excavation world, cranes are used to move equipment or machinery. Cranes can quickly and easily move machinery into trenches or down steep hills, or even pipe. There are many types of cranes available, serving everything from excavation to road work. Cranes are also beneficial to building bridges or construction. For many years, cranes have proven to be an asset to the industry of construction and excavating. Crane operators make really good money, no matter what type of crane they are operating. |
Sponsored Ads:Related Articles:
Home Security / Home Security Appliance Control System Energy Efficient Home / Home Energy Evaluation Survey Solar Energy / Learning About Solar And Alternative Energy Equipment Pool Accessories / Popular Pool Accessories For Teens Waterfront Property / Why The Lakefront Is So Attractive To Buyers Moving / Car Moving Buying A New Home / Finding The Right Home: Guide To Buying A New Home Buying A New Home / New Home Buying: Tips To Protect Yourself Energy Efficient Home / Home Energy Magazine Moving / The Moving Company For You! Construction Management / Strategic Management In Construction Generators / The Advantages Of Diesel Generators: Construction Management / Construction Engineering And Management Excavation Machines / Trenching And Plowing Equipment Home Improvement / Landscaping For Improving Homes Also In This Category:Currently Online :9 member(s), 18 guest(s): CherryBerry, Commitment, FreeSpirit, Kevin, MazMaz, Splishsplash, TotallyChilled, Victory, WoolyFriend, Ask Jeeves, Crawler.de, Gigabot, Google, Archive.org, MSN.com, Nutch, Cobion.com, Slurp Search : |
No comments yet
let∞s preservative days years audible newsletters doors gun vegas radiation car wave germany holt odor surplus quality halogen nails monitor bad love hardness devices metal smartside windows fabrics quit making advantages heaters motivated grocery agricultural the deals out forwarders buying sparkling single refinance world illumination jewelry resumes school pendants party connected
Categories: Tenant Screening Declutter your Home List Building Decorate Your Home Porches Decks How to Start Your Own Cellar Kitchen Care Home Inspection Boo-Boos Paint Tips For Your Home Bathroom Accessories Waterfront Property Air Purifiers Vacuum Cleaners Waterfront Property Swimming Pools Sell Your House Roofing Power Tools Energy Efficient Home Excavation Equipment Metal Detector Alternative Energy Ceiling Fans Mini Blinds Home Security Excavation Equipment Home Improvement Carpet Pool Accessories Carport Home Makeover Lighting Construction Management Windows Water Treatment Solar Energy Shipping Security Roofing Remodeling Patio Mattress Home Refinancing Home Inspector Home DIY Generators Garage Remodeling Excavation Machines Chandelier Bathroom Accessories Alarm Systems Woodworking Termites Siding Rugs Home Security Realtor Real Estate Moving Relocation Window Blinds Kitchen Remodeling Flooring Buying A New Home