Gear-shift device of dual steel wheel vibratory roller

The utility model relates to a gear-shift device of a dual steel wheel vibratory roller. The gear-shift device is characterized in that the device comprises a transmission operation handle (1), a handle controller (2), a gear selecting switch (3) and a variable traveling pump proportional solenoid coil (4); the input terminal of the gear selecting switch (3) is connected with the output terminal of the handle controller (2); the output terminal of the gear selecting switch (3) is connected with one end of the variable traveling pump proportional solenoid coil (4); the input terminal of the handle controller (2) is connected with the OUT positive terminal of the transmission operation handle (1); and the OUT negative terminal of the transmission operation handle (1) is connected with the common terminal of the handle controller (2) and the other end of the variable traveling pump proportional solenoid coil (4). The utility model ensures that a traveling hydraulic system of the dual steel wheel vibratory roller