Working machine

A working machine comprising:

• a machine body;
• a prime mover:
• a pair of traveling devices on the machine body;
• a pair of traveling motors to provide power to the pair of traveling devices, respectively, and to be switched between a first speed and a second speed higher than the first speed;
• a pair of traveling pumps driven by the prime mover to supply operation fluid to the pair of traveling motors, respectively;
• a controller configured to automatically shift down the pair of traveling motors from the second speed to the first speed;
• a mode switch connected to the controller and configured for an operator to select an ON position allowing the controller to automatically shift down the first traveling motor from the second speed to the first speed and an OFF position preventing the controller to automatically shift down the first traveling motor from the second speed to the first speed;
• a display connected to the controller and configured to display that the operator selects the ON position of the mode switch allowing the controller to automatically shift down the first traveling motor from the second speed to the first speed;
• and
• a speed-changing switch connected to the controller and configured for the operator to manually select the pair of traveling motors to be switched to the first speed or the second speed, wherein
• the display is configured to display whether the operator manually selects the pair of traveling motors to be switched to the first speed or the second speed.

A working machine comprising:

• a machine body;
• a prime mover;
• a pair of traveling devices on the machine body;
• a pair of traveling motors to provide power to the pair of traveling devices, respectively, and to be switched between a first speed and a second speed higher than the first speed;
• a pair of traveling pumps driven by the prime mover to supply operation fluid to the pair of traveling motors, respectively;
• a controller configured to automatically shift down the pair of traveling motors from the second speed to the first speed;
• a mode switch connected to the controller and configured for an operator to select an ON position allowing the controller to automatically shift down the first traveling motor from the second speed to the first speed and an OFF position preventing the controller to automatically shift down the first traveling motor from the second speed to the first speed;
• a display connected to the controller and configured to display that the operator selects the ON position of the mode switch allowing the controller to automatically shift down the first traveling motor from the second speed to the first speed;
• a hydraulic pump driven by the prime mover to output pilot fluid;
• and
• a second switching valve connected to the hydraulic pump and configured to switch whether the pilot fluid is supplied to a pair of first switching valves, wherein
• the second switching valve is configured to switch a first position causing the pilot fluid not to be supplied to the pair of first switching valves so as to switch the pair of traveling motors to the first speed, and a second position causing the pilot fluid to be supplied to the pair of first switching valves so as to switch the pair of traveling motors to the second speed, and
• the controller is configured to automatically shift down the pair of traveling motors from the second speed to the first speed, by switching the second switching valve from the first position to the second position.

A working machine comprising:

• a machine body;
• a prime mover;
• a pair of traveling devices on the machine body;
• a pair of traveling motors to provide power to the pair of traveling devices, respectively, and to be switched between a first speed and a second speed higher than the first speed;
• a pair of traveling pumps driven by the prime mover to supply operation fluid to the pair of traveling motors, respectively;
• a controller configured to automatically shift down the pair of traveling motors from the second speed to the first speed, when a predetermined condition is satisfied;
• and
• a display connected to the controller and configured to display that the pair of traveling motors is automatically shifted down from the second speed to the first speed, wherein
• the display includes a lamp which flashes when the controller automatically shifts down the pair of traveling motors from the second speed to the first speed.

A working machine comprising:

• a machine body;
• a prime mover;
• a pair of traveling devices on the machine body;
• a pair of traveling motors to provide power to the pair of traveling devices, respectively, and to be switched between a first speed and a second speed higher than the first speed;
• a pair of traveling pumps driven by the prime mover to supply operation fluid to the pair of traveling motors, respectively;
• a controller configured to automatically shift down the pair of traveling motors from the second speed to the first speed, when a predetermined condition is satisfied;
• a display connected to the controller and configured to display that the pair of traveling motors is automatically shifted down from the second speed to the first speed;
• and
• a speed-changing switch connected to the controller and configured for the operator to manually select the pair of traveling motors to be switched to the first speed or the second speed, regardless whether the predetermined condition is satisfied, wherein
• the display is configured to display whether the operator manually selects the pair of traveling motors to be switched to the first speed or the second speed.

A working machine comprising:

• a machine body;
• a prime mover;
• a pair of traveling devices on the machine body;
• a pair of traveling motors to provide power to the pair of traveling devices, respectively, and to be switched between a first speed and a second speed higher than the first speed;
• a pair of traveling pumps driven by the prime mover to supply operation fluid to the pair of traveling motors, respectively;
• a controller configured to automatically shift down the pair of traveling motors from the second speed to the first speed, when a predetermined condition is satisfied;
• a display connected to the controller and configured to display that the pair of traveling motors is automatically shifted down from the second speed to the first speed;
• a hydraulic pump driven by the prime mover to output pilot fluid;
• and
• a second switching valve connected to the hydraulic pump and configured to switch whether the pilot fluid is supplied to a pair of first switching valves, wherein
• the second switching valve is configured to switch a first position causing the pilot fluid not to be supplied to the pair of first switching valves so as to switch the pair of traveling motors to the first speed, and a second position causing the pilot fluid to be supplied to the pair of first switching valves so as to switch the pair of traveling motors to the second speed, and
• the controller is configured to automatically shift down the pair of traveling motors from the second speed to the first speed, by switching the second switching valve from the first position to the second position.