Sprayer boom lock valve for sequencing unfolding steps

Details Sprayer boom lock valve for sequencing unfolding steps Sprayer boom lock valve for sequencing unfolding steps

1997-11-04

1999-09-14

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

With mobile tank-type supply means

Spray boom or bar type distributor

239161, 239164, 239166, 239167, 91358A, 91392, B05B 120, B05B 302, F15B 1520

Patent

active

059509260

ABSTRACT:
The present invention relates to a sprayer boom lock valve for automating the setup sequence for sprayer operation from the transport position. The lock valve comprises a lever, spring biased toward a valve closing pin, and a cam secured on the secondary boom of the sprayer boom. When the secondary boom is rotated to release wheel locks in the setup sequence, the cam releases the lever which acts on the valve closing pin to close the valve and prevent any further rotation of the secondary boom. The valve is opened again by a linkage which is pulled tight when the sprayer wings are opened, retracting the lever and opening the valve. The hydraulic drive line is then reestablished to complete rotation of the secondary booms. The automated lock valve of the present invention prevents accidental under-rotation of the secondary booms which would be insufficient to release the wheel locks, and also prevents accidental over-rotation which would cause the secondary booms in the transport position to crash into each other damaging the sprayer.

REFERENCES:
patent: 4739930 (1988-04-01), Pask
patent: 4944355 (1990-07-01), Karchewski
patent: 5029757 (1991-07-01), Bourgault et al.
patent: 5154240 (1992-10-01), Carrick
patent: 5178328 (1993-01-01), Broyhill
patent: 5630547 (1997-05-01), Klemenhagen et al.

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