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Crane upper works to lower works alignment system

  • US 5,427,256 A
  • Filed: 09/20/1991
  • Issued: 06/27/1995
  • Est. Priority Date: 09/20/1991
  • Status: Expired due to Term
First Claim
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1. A method for aligning the upper works of a crane to the lower works of a crane to facilitate redecking the upper works to the lower works, the lower works comprising a car body supporting a swing bearing, which comprises the steps of:

  • a) supporting said crane upper works in a generally level manner;

    b) placing said crane lower works beneath and in general alignment with said upper works;

    c) attaching a means for suspending said lower works beneath and from said upper works;

    d) suspending said lower works by said suspending means;

    e) aligning said lower works with said upper works through the influence of gravity on said lower works; and

    f) redecking said upper works with said lower works.

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