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特雷克斯起重机助力美国航天设施拆卸
2021-01-12 中国第一机械网

美国佛罗里达州租赁公司Beyel Brothers曾使用特雷克斯AC 350/6全地形起重机从肯尼迪航天中心的航天飞机装配大楼上拆卸了一台高架起重机

特雷克斯AC 350/6起重机、大臂和116,7吨配重仅用7辆卡车进行运输。AC 350/6起重机最高时速达53英里/小时,很快就到达了工作现场。

进入装配大楼后,Beyel Brothers的工作人员在四个小时内完成了起重机的安装。工作人员使用135英尺的主吊臂从世界上最大的单层建筑——526英尺高的建筑物中将一台高架起重机拆卸下来。一个关键点是拆除超过45.4吨的钢桶和缆车组件。 特雷克斯AC 350/6全地形起重机以40-45英尺的半径工作,最终将组件安全下放到建筑物的地板上。

美国国家航空航天局严格的起重安全标准要求起重机保持在其载荷图表的75%以内,AC 350/6起重机能够在没有侧向超举系统的情况下执行所有起吊作业。Beyel说,不用超举结构就可以进行举升,为他们节省了额外的卡车负载、四到五个小时的设置时间以及两个额外的劳动力。

工作人员还必须完成两个大梁的拆卸,一个重24吨、另一个重18.1吨。工作人员说,将80英尺长的大梁下放到地板上是一项艰巨的工作。最终,从进入工作场地、完成拆卸作业到起重机搬出共用时六天。

本文源自cranestodaymagazine.com,原文如下:

Terex crane in space station lift

Florida based rental firm Beyel Brothers used a Terex AC 350/6 all terrain crane to remove an overhead crane at the Kennedy Space Center in Florida, USA from the Space Shuttle’s Vehicle Assembly Building (VAB).

The AC 350/6 crane, boom and 116,7t counterweight was transported in only seven truckloads. With a top speed of 53mph the AC 350/6 got to the job site quickly, which the rental firm said was a timesaver.

Once inside the VAB, Beyel Brothers' crew set up the crane in four hours. Crews worked with 135ft of main boom to remove the overhead crane from the 526ft tall building, the largest single story building in the world. One critical pick was to remove the more than 45.4t drum and cable trolley assembly. Working at a 40-45ft radius, the AC 350/6 all terrain crane lowered the assembly to the floor of the building.

NASA's stringent lifting safety standards required the crane to stay within 75% of its load chart, the AC 350/6 crane was able to perform all lifts without the sideways superlift system. Beyel said that being able to do the lift without the superlift structure saved them an extra truck load, four to five hours of setup and two extra labourers.

Crews also had to complete two picks of the massive girders, one weighing 24t and the other 18.1t. Crew members said that getting the 80ft long girders to the floor was a tight job. The Terex crane performed four additional picks to remove braces between the girders. Once all seven picks were complete, the AC 350/6 crane was derigged and moved out. Total time on the job from move-in to lifts to move out was six days.

Source: http://www.cranestodaymagazine.com/news/terex-crane-in-space-station-lift-020813/

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