초록 ▼

A vehicle mounted spray boom assembly includes a breakaway spray boom and shock absorbing means for absorbing the shock on the boom assembly when a boom returns to normal position after striking an obstacle. The shock absorbing means includes a swing cylinder for rigging in and rigging out the spray

A vehicle mounted spray boom assembly includes a breakaway spray boom and shock absorbing means for absorbing the shock on the boom assembly when a boom returns to normal position after striking an obstacle. The shock absorbing means includes a swing cylinder for rigging in and rigging out the spray boom and a tilt cylinder for tilting the boom when the boom has been rigged out. Upon occurrence of shock after an obstacle is struck, a portion of the hydraulic fluid in the swing cylinder is forced into the tilt cylinder to lift the spray boom to dissipate the shock. In addition, another cylinder may be provided for absorbing shock imparted to the boom due to vertical movement of the boom. Also the swing cylinder and tilt cylinder are hydraulically connected in parallel so that when rig out has been completed, pressurized hydraulic fluid continues to be ported to the tilt cylinder to elevate the end of the boom.

대표청구항 ▼

In a spray boom assembly mountable on a vehicle for movement with the vehicle, at least one boom, shock absorbing means for absorbing shock imparted to said boom assembly in a direction substantially parallel to the direction of movement of the vehicle, said shock absorbing means including fluid cir

In a spray boom assembly mountable on a vehicle for movement with the vehicle, at least one boom, shock absorbing means for absorbing shock imparted to said boom assembly in a direction substantially parallel to the direction of movement of the vehicle, said shock absorbing means including fluid circuit means for converting said shock to a force pivotally lifting said boom in a direction substantially perpendicular to the direction of said shock in response to the occurrence of said shock to dissipate said shock.