| 摘要 |
<p>Disclosed is a transmission that makes it possible to transmit a driving force for backing to a vehicle inexpensively and in a state of good transmission efficiency, while also making it possible to transmit a driving force for advancing in a wide speed range to the vehicle. A planetary transmission unit (30) is configured so as to output the driving force for advancing in a state where a hydrostatic continuously variable transmission unit (11) is in a positive rotation speed state or a reverse rotation speed state. A low-speed transmission clutch (45) for integrally and rotatably connecting a low-speed-side transmission gear (41) engaged with a low-speed-side output gear (31) in the planetary transmission unit (30) to a countershaft (44), and a high-speed transmission clutch (46) for integrally and rotatably connecting a high-speed-side transmission gear (42) engaged with a high-speed-side output gear (32) in the planetary transmission unit (30) to the countershaft (44) are provided. An output shaft gear (48) engaged with a counter gear (47) supported integrally and rotatably by the countershaft (44) is provided. A backing transmission clutch (52) for integrally and rotatably connecting a backing transmission gear (51) engaged with the low-speed-side output gear (31) to an output shaft (43) is provided.</p> |
