US 12,135,075 B2
Work vehicle
Tomonari Tsuchida, Osaka (JP); Ryoma Iwase, Osaka (JP); Tomoyuki Tanaka, Osaka (JP); Takahiro Matsuo, Osaka (JP); and Hiroyuki Aikawa, Osaka (JP)
Assigned to KUBOTA CORPORATION, Osaka (JP)
Filed by KUBOTA CORPORATION, Osaka (JP)
Filed on Nov. 15, 2022, as Appl. No. 17/987,296.
Claims priority of application No. 2021-210105 (JP), filed on Dec. 24, 2021.
Prior Publication US 2023/0204093 A1, Jun. 29, 2023
Int. Cl. F16H 57/02 (2012.01); F16H 1/28 (2006.01); F16H 37/08 (2006.01); F16H 57/04 (2010.01)
CPC F16H 57/02 (2013.01) [F16H 37/0813 (2013.01); F16H 57/0408 (2013.01); F16H 1/28 (2013.01); F16H 2057/02008 (2013.01); F16H 2057/02026 (2013.01); F16H 2057/02043 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A work vehicle comprising:
a gear transmission configured to vary power from a power source and output the power to a traveling device;
a transmission case containing the gear transmission; and
an oil outlet port opening to a bottom portion in one end side of the transmission case in a vehicle body front-back direction, the oil outlet port being configured to take out a lubricating oil from an interior of the transmission case, wherein
the work vehicle includes a partition part dividing an internal space of the transmission case into a first space zone along a sidewall portion of the transmission case, and a second space zone other than the first space zone on another end side in the vehicle body front-back direction of the transmission case, the partition part keeping the first space zone in a sealed state,
the oil outlet port is disposed at an upper portion and a lower portion in the bottom portion;
the bottom portion includes a communication chamber formation member disposed on an outer surface of a sidewall portion of the transmission case, the communication chamber formation member being configured to form a communication chamber between itself and the sidewall portion;
the oil outlet port at the upper portion opens to an upper portion of the communication chamber formation member;
the oil outlet port at the lower portion opens to a lower portion of the communication chamber formation member; and
a communication hole allowing the communication chamber to communicate with an internal space of the transmission case opens to a portion of the sidewall portion which is opposed to the oil outlet port at the lower portion.