Bypass system for electronically controlled implement lift

Details Bypass system for electronically controlled implement lift Bypass system for electronically controlled implement lift

A - Human Necessities

01

B

A01B 63/32 (2006.01) A01B 63/10 (2006.01)

Patent

CA 2298819

An implement lift with a plurality of individual electrohydraulically controlled lift cylinders spaced on a tool frame includes a bypass system for facilitating continued implement operation in the event of a failure of the electronics or wiring. The system includes an electrically controlled valve at each cylinder normally operated by an electronic controller but manually lockable in an open position if there is a circuit failure so the operator can control the implement from the tractor selective control valve (SCV). Hydraulic hoses with quick disconnects compatible with both the tractor SCV connections and the main electrohydraulic valve on the tractor are connected to the tractor valve for normal automatic operation but can be easily rerouted to the SCV connections for control by the SCV when the cylinder valves are manually locked in the open position.

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