Call Toll Free - 888-670-1195
2018 Skyjack SJ1056 Image
Stock Number: EQC012374
Make: Skyjack
Model: SJ1056
Year: 2018
2018 Skyjack SJ1056 Details
2015 Terex CTT 121A-5 TS16 Image
Stock Number: 600017
Make: Terex
Model: CTT 121A-5 TS16
Year: 2015
2015 Terex CTT 121A-5 TS16 Details
2007 Potain HDT80 Image
Stock Number: 600194
Make: Potain
Model: HDT80
Year: 2007
2007 Potain HDT80 Details
2013 Hyundai 110D-7E Image
Stock Number: EQU010604
Make: Hyundai
Model: 110D-7E
Year: 2013
2013 Hyundai 110D-7E Details
2012 Miller Big Blue 400D Image
Stock Number: 231276
Make: Miller
Model: Big Blue 400D
Year: 2012
2012 Miller Big Blue 400D Details
2008 Combilift C12000SL Image
Stock Number: EQU008108
Make: Combilift
Model: C12000SL
Year: 2008
2008 Combilift C12000SL Details
 
Comedil Self Erect Cranes

Comedil Self Erect Cranes

Typically the base which is bolted into a huge concrete pad provides the crucial support for a tower crane. The base is attached to a tower or a mast and stabilizes the crane that is affixed to the inside of the structure of the building. Often, this attachment point is to an elevator shaft or to a concrete lift.

Usually, the mast is a triangulated lattice structure measuring 10 feet square or 0.9m2. The slewing unit is attached to the very top of the mast. The slewing unit consists of a motor and a gear that enable the crane to rotate.

Tower cranes are able to have a maximum unsupported height of 80m or 265 feet. The maximum lifting capacity of a tower crane is 16,642 kilograms or 39,690 pounds with counter weights of 20 tons. Moreover, two limit switches are utilized to be able to make certain that the operator does not overload the crane. There is even another safety feature referred to as a load moment switch to make sure that the operator does not exceed the ton meter load rating. Lastly, the tower crane has a maximum reach of 230 feet or 70 meters.

Due to their extreme heights, there is a science involved to erecting a crane. The stationary structure would at first need to be brought to the construction location by using a large tractor-trailer rig setup. Next, a mobile crane is used in order to assemble the machinery portion of the crane and the jib. These parts are then connected to the mast. The mobile crane then adds counterweights. Forklifts and crawler cranes may be some of the other industrial equipment that is utilized to erect a crane.

Mast extensions are added to the crane when the building is erected. This is how the height of the crane can match the building's height. The crane crew utilizes what is known as a climbing frame or a top climber that fits between the top of the mast and the slewing unit. A weight is hung on the jib by the work crew so as to balance the counterweight. Once complete, the slewing unit is able to detach from the top of the mast. In the top climber, hydraulic rams are used to adjust the slewing unit up an additional 20 feet or 6.1m. Then, the driver of the crane utilizes the crane to insert and bolt into place one more mast section piece.

  • Caterpillar Narrow Reach Forklifts
    Narrow aisle forklifts Narrow aisle forklifts are generally utilized within warehousing operations. These forklifts are essential machines in the business as their small size and excellent maneuverability allow warehouses to use space to maximum storing... More
  • Genie Boom Lifts
    For all of your forklift requirements, there are many reasons to pick a Genie Lift Truck. The products which Genie produces are top-of-the-line, with exceptional service, and fantastic customer support to help you meet all... More
  • CAT Reach Stackers
    For railway handling, this might require bigger trucks which are equipped with both a longer reach and higher lift capacity. You may require a versatile truck with more functions to unload and load on many... More
  • Manitou Aerial Lifts
    There are several applications which entail a lot more reach than the average job. For these instances, the ever-growing range of articulating and telescopic booms is a good option. Electric or engine powered or bi-energy... More
  • Terex Loaded Container Handlers
    Terex's Port Crane division offers experience and unrivaled heritage. This is due to the combination of 2 of the world's best Port Crane builders. The combination of two of the world's best Port Crane manufacturers... More