| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a combine harvester not only capable of reaping unreaped grain culms (falling-down grain culms or the like) by singly changing the rotating speed of a hydraulic motor to the low-speed side irrelevantly to the rotating speed of a hydraulic pump, but also capable of changing the traveling speed to high-speed side by singly carrying out the changing operation of the rotating speed of the hydraulic motor irrelevantly to the rotating speed of the hydraulic pump on the travel on a road such as movement between fields. <P>SOLUTION: The combine harvester is obtained by installing a stepless hydraulic speed-changing mechanism 107 equipped with the hydraulic pump 105 and the hydraulic motor 106, and constituting the hydraulic pump 105 so as to be a variable volume type steplessly freely changing the speed to an advancing rotation state and a retreating rotation state. The hydraulic motor 106 is constituted so as to be a variable volume type enabling the changing operation of the rotation speed of the hydraulic motor 106 to a high speed such as an on-street traveling speed, a middle speed such as a standard reaping speed, and a low speed such as a falling-down grain culm-reaping speed for reaping the falling-down grain culms. <P>COPYRIGHT: (C)2012,JPO&INPIT |
