Brake means for a center pivot irrigation system

Details Brake means for a center pivot irrigation system Brake means for a center pivot irrigation system

1975-05-06

1976-06-29

Blunk, Evon C.

Fluid handling

With casing, support, protector or static constructional...

Vehicle

188 827, 239177, B05B 312

Patent

active

039659240

ABSTRACT:
A brake for a center pivot irrigation system which prevents the drive towers of the system from undesirably moving in either a forwardly or rearwardly direction unless the brake means is released. The brake means comprises a spring loaded arm pivotally secured to the drive tower frame and having a lug receiving notch formed therein which is adapted to receive a lug provided on the drive wheel to prevent rotation of the drive wheel in either direction when the arm is in a first position. An actuating arm is also pivotally connected to the drive tower frame and is interconnected to the brake arm by a flexible cable extending therebetween and over a pulley. As the trojan bar on the drive tower moves through its drive stroke, the trojan bar engages the actuator arm to pivotally move the same so that the locking arm is moved upwardly out of engagement with the drive lug. If the drive wheel should rotate at a faster rate than that which the trojan bar is attempting to drive the same, the brake arm moves into engagement with one of the drive lugs to limit the forward movement of the drive tower. The locking arm also prevents the tower from being moved rearwardly during those times that the system is inoperative.

REFERENCES:
patent: 3386661 (1968-06-01), Olson et al.
patent: 3766937 (1973-10-01), Lundvall et al.
patent: 3866836 (1975-02-01), Dowd

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