Safe load indicator

Details Safe load indicator Safe load indicator

1980-05-13

1983-01-18

Reeves, Robert B.

Traversing hoists

With haul-in line

340685, 364424, G08B 2100

Patent

active

043688241

ABSTRACT:
A crane having a novel data processing system which uses a microprocessor (22), to calculate mathematically the actual jib radius (R.sub.1) from inputs corresponding to jib head angle elevation, jib base elevation and jib length from head (9) to base (8). The system provides actual data which can be fed to a display (10) and which can actuate alarms (24), (26) on reading a safe load stored in a load table in a microcomputer of which the microprocessor forms a part. The actual data can also control motion cut offs, automatic luffing and automatic stowage. A novel dynamometer (30) is also included which can measure crane hoist loads, speed and direction.

REFERENCES:
patent: 3922789 (1975-12-01), Sarrell
patent: 4133032 (1979-01-01), Spurling
patent: 4178591 (1979-12-01), Geppert
patent: 4185280 (1980-01-01), Wilhelm

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