Regarding a travel power transmission apparatus for a tractor, in which a creep speed changing apparatus is housed in a transmission case, the present invention increases a deceleration ratio throughout the creep speed change while suppressing an increase in the size of the transmission case. A creep speed changing apparatus 60 includes: a first power transmission gear 66 that is provided on an output shaft gear 54b of a gear transmission 40; a first deceleration gear 62 that is supported by a relay shaft 61 so as to be rotatable relative to the relay shaft 61, in a state of meshing with the first power transmission gear 66; a second power transmission gear 67 that is provided on the first deceleration gear 62; a second deceleration gear 63 that is supported by an output shaft 43 of the gear transmission 40 so as to be rotatable relative to the output shaft 43, in a state of meshing with the second power transmission gear 67; a third power transmission gear 68 that is provided on the second deceleration gear 63; a third deceleration gear 64 that is supported by the relay shaft 61 so as not to be rotatable relative to the relay shaft 61, in a state of meshing with the third power transmission gear 68; and a pair of deceleration gears 65 that are provided so as to span the relay shaft 61 and the output shaft 43, and decelerate power from the relay shaft 61 and transmit the resulting power to the output shaft 43.
TRACTOR, TRAVEL TRANSMISSION DEVICE FOR TRACTOR, AND TRACTOR EQUIPPED WITH TRAVEL TRANSMISSION DEVICE FOR TRACTOR
TRAKTOR, FAHRÜBERTRAGUNGSVORRICHTUNG FÜR EINEN TRAKTOR SOWIE TRAKTOR MIT EINER FAHRÜBERTRAGUNGSVORRICHTUNG FÜR EINEN TRAKTOR
TRACTEUR, DISPOSITIF DE TRANSMISSION DE DÉPLACEMENT POUR TRACTEUR, ET TRACTEUR ÉQUIPÉ D'UN DISPOSITIF DE TRANSMISSION DE DÉPLACEMENT POUR TRACTEUR
2023-10-18
Patent
Elektronische Ressource
Englisch
Europäisches Patentamt | 2020
|Europäisches Patentamt | 2021
|Europäisches Patentamt | 2020
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