Safety apparatus for construction equipment

Details Safety apparatus for construction equipment Safety apparatus for construction equipment

1992-10-21

1993-06-08

Sotelo, Jesus D.

Traversing hoists

With haul-in line

212189, 212155, B66C 1316

Patent

active

052171264

ABSTRACT:
A safety apparatus which can set an appropriate rated load curve which can be grasped readily by an operator and takes a difference between horizontal extension amounts of outrigger jacks into consideration and can facilitate calculation of a load factor. Entire circumference load calculating means calculates a first rated load regarding a forward and backward direction and calculates a second rated load based on extended conditions of the front and rear outrigger jacks, and then calculates inflection angles of a rated load curve based on the rated loads and the extended conditions of the outrigger jacks, whereafter it sets, from the inflection angles, a final rated load curve which continues over the entire circumference. Further, load factor calculating means calculates a load factor making use of the rated load calculated by the entire circumference load calculating means, and a safety operation is performed in accordance with the load factor.

REFERENCES:
patent: 4198857 (1980-04-01), Treux
patent: 4705295 (1987-11-01), Fought
patent: 4860539 (1989-08-01), Parrett et al.
patent: 5119949 (1992-06-01), Kishi
patent: 5160056 (1992-11-01), Yoshimatsu et al.

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