DEVICE FOR SELECTION AND ENGAGEMENT OF REQUIRED STAGE OF GEAR-BOX OF TRANSPORT FACILITY Russian patent published in 1999 - IPC

FIELD: mechanical engineering. SUBSTANCE: device includes AC tachogenerator, logic unit and gear actuating gear shift mechanism consisting of actuating gear shift mechanisms and clutch disengagement actuating mechanism. Outputs of logic unit corresponding to gears to be engaged are connected with first inputs of AND logic gate and with clutch disengagement actuating mechanism via normally closed contacts of microswitches, feedback diode limiter unit and amplifier, as well as second inputs of AND logic gates via contacts of switch. Outputs of AND logic gates are connected via amplifiers with respective actuating gear shift mechanisms. EFFECT: extended field of functional capabilities of gear-boxes due to automated shift. 3 dwg