| 摘要 |
A hydrostatic continuously variable transmission device includes: a variable displacement type hydraulic pump; a variable displacement type first hydraulic motor operated by a hydraulic oil from the hydraulic pump; a fixed displacement type second hydraulic motor operated by the hydraulic oil from the hydraulic pump; a parallel circuit for continuously connecting hydraulic oil input ports of the first and second hydraulic motors and continuously connecting oil drain ports of the first and second hydraulic motors; and an output confluence mechanism for allowing a rotational output of the first hydraulic motor and a rotational output of the second hydraulic motor to interflow. Switching is selectively made between a first speed state in which a cam plate angle of the variable displacement type first hydraulic motor is equal with a cam plate angle of the fixed displacement type second hydraulic motor and a second speed state in which the cam plate angle of the variable displacement type first hydraulic motor is zero. |
