Crane vehicle

Details Crane vehicle Crane vehicle

1996-12-12

1998-09-29

Brahan, Thomas J.

Traversing hoists

Having random condition sensor combined with an indicator or...

Means determining overloading produced by load

212277, B66C 1506

Patent

active

058135510

ABSTRACT:
The present invention relates to a crane vehicle with a jib, preferably a telescoping jib, hinged to its superstructure which jib can be luffed by a luffing ram which is hinged to the jib and the superstructure, with extending sliding beams which are positioned at the end parts of the longitudinal sides of the carrier which face each other and which are provided at their ends with extending stabilizer bases, and with an overload safety unit which generates a signal and/or stops the crane operation when the crane reaches or exceeds limits which endanger its stability. In accordance with the invention a monitoring unit is provided which detects the extension state of the sliding beams and which feeds the signals corresponding to the relevant extension state of the individual sliding beams to the overload safety unit and the overload safety unit assumes the lowest extension length of one of the sliding beams for all sliding beams to determine the limits which endanger the stability.

REFERENCES:
patent: 3824578 (1974-07-01), Harders
patent: 5119949 (1992-06-01), Kishi
patent: 5160056 (1992-11-01), Yoshimatsu et al.
patent: 5217126 (1993-06-01), Hayashi et al.

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