Crane vehicle
US5813551A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1996 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Dec 12, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C23/88
- WIPO fieldHandling
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.