Experts in the field advise determining the load capacity and range of the crane by utilizing the load chart supplied with the crane. Mobile cranes can be manually, electrically, or pneumatically powered and are available in a wide array of designs.Ĭhoosing construction cranes requires an understanding of the task as well as the crane. Mobile cranes are used to load container ships, offer crane service (like setting roof trusses), transport building materials, and virtually any other lifting function. In contrast to static cranes, mobile cranes are carried in or mounted on a vehicle designed to be used on site, as opposed to a permanent installation in a factory setting. Mobile cranes are designed to be transported from job to job with minimal setup required. The base of a tower crane is often set in concrete to prevent the object being lifted from gaining leverage on the crane and tipping it over. Tower cranes have the longest lifting range and power of any crane design. Tower cranes include the tower, (also known as a mast) and a jib. Tower cranes are commonly used to build large structures, like a skyscraper. In this configuration, the hoist component of the crane moves the object vertically and the trolly moves it horizontally. Overhead cranes are typically used to vertically lift heavy objects and often employ a trolley. Overhead cranes are available in a number of configurations, such as gantry, jib, bridge, workstation and monorail. Overhead cranes employ chains or wire rope to gain mechanical leverage on an object and lift it. The jib on a jib crane is fixed in length and is often designed for a specific purpose. Jib cranes allow separation from the object being lifted. Jib cranes incorporate a jib, which is the top horizontal component from which a load can be suspended. Gantry cranes are common in automobile and modular home manufacturing because they are reliable and often have long duty cycles. Gantry cranes can be powered electrically, but the majority are pneumatically powered due the increased power it provides. Gantry cranes are most often used in manufacturing to lift heavy objects vertically, transport them horizontally, and lower them back to the floor. Gantry cranes are cranes that move along a track and employ posts and girders to lift heavy objects. Cranes often employ either electrical or pneumatic power to move objects horizontally, in addition to an attached hoist to raise and lower the object vertically. ![]() Cranes come in several forms, such as overhead, rough terrain, and tower. Gantry, jib, monorail, bridge, and overhead cranes can fall into the static crane category.Ī crane is a machine that uses mechanical leverage, wire rope, and/or chains to lift and relocate heavy objects. ![]() In contrast, mobile cranes are usually mounted to vehicles, allowing them to be transported from job site to job site. Static does not mean the crane does not move at all, but rather that it moves along a predetermined path. Static cranes, as the name implies are permanently or semi-permanently installed cranes.
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