DEVICE TO CHANGE OVER MECHANICAL GEARBOX OF PRIME MOVER OF ROAD CLEANING AND MAINTAINING MACHINE WHICH MOVES WITH OPERATING MOUNTED EQUIPMENT Russian patent published in 2007 - IPC B60K20/02 B60K17/28 

FIELD: road machinery.

SUBSTANCE: proposed machine contains prime mover with cab and engine 3 which is connected with mechanical gearbox 4 through clutch 5 provided with clutch release pedal 6. Power takeoff box 15 is mechanically coupled with gearbox 4. Mounted equipment is provided with power coupling with gearbox 4. Said coupling is made in form of hydraulic system including hydraulic pump 17 driven by power takeoff box 15. To change over gearbox 4 of prime mover clutch 5 is released by pressing on pedal 6. This breaks mechanical coupling between engine 3 and gearbox 4. Simultaneously with release of clutch 5, bracket of pedal 6 closes electric switch of hydraulic valve 20, and power coupling between gearbox 4 and mounted equipment is interrupted after change over of gears, pedal 6 is returned in upper position and clutch 5 is engaged. Simultaneously, bracket breaks contacts of electric switch, thus restoring power coupling between gearbox 4 and mounted equipment.

EFFECT: improved reliability of gearbox.

2 cl, 6 dwg