Title:
OPERATION LEVER CHANGE-OVER CIRCUIT FOR ROTARY SNOWPLOW
Document Type and Number:
Japanese Patent JP3548388
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a device in which either operation lever of two operation levers can be selected with priority without preliminarily selecting one of them in operation of a shoot mechanism of a rotary snowplow.
SOLUTION: This change-over circuit is provided with an operator side operation lever 1a having plural action switches 6Aa, 6Ba, 6Ca, 6Da respectively connected to a actuators 10, 12, 13 to actuate a shoot mechanism (cap opening/ closing, expansion, revolving) of a rotary snowplow, and connected to a main power line 7a to which power is supplied to operate the shoot mechanism. It is also provided with an assistant side operation lever 1b having plural action switches 22E, 22F, 22G, 22H respectively connected to the actuators 10, 12, 13, and connected to an auxiliary power line 7j to operate the shoot mechanism, and priority switches 6Ab, 6Bb, 6Cb, 6Db disposed to correspond to the respective action switches 6Aa, 6Ba, 6Ca, 6Da, and serially connected between the main power line 7a and the auxiliary power line 7j to off-actuate by actuation of the action switches 6Aa, 6Ba, 6Ca, 6Da.
Inventors:
Masayoshi Suzuki
Application Number:
JP20450897A
Publication Date:
July 28, 2004
Filing Date:
July 30, 1997
Export Citation:
Assignee:
Niigata Iron Works Co., Ltd.
International Classes:
E01H5/04; E01H5/09; G05G9/047; H01H9/20; (IPC1-7): E01H5/04; E01H5/09; G05G9/047; H01H9/20
Domestic Patent References:
| JP9195238A |