公开(公告)号：US20220205526A1

公开(公告)日：2022-06-30

申请号：US17525262

申请日：2021-11-12

Applicant: KUBOTA CORPORATION

Inventor： Tomonari TSUCHIDA ,  Atsuro HAYAMI ,  Hiroyuki SADAMOTO ,  Keitaro MORINAGA ,  Kazuhiro WADA ,  Rikuto ARAKI ,  Ryoma IWASE ,  Tomoyuki TANAKA ,  Takahiro MATSUO ,  Hiroyuki AIKAWA

IPC: F16H57/021 ,  F16H57/04

Abstract: A power transmission device for a work vehicle includes a transmission case, a gear transmission housed in the transmission case and configured to transmit power to a travel device, and a transmission gear provided in the gear transmission in a state of sitting in lubricating oil stored in an internal space of the transmission case, the transmission case being provided with a wall part supporting a support shaft of the transmission gear in a state of being adjacent to the transmission gear, and the wall part being provided with a cover part protruding toward the outer periphery of the transmission gear from the wall part and covering the transmission gear.

公开(公告)号：US20230204096A1

公开(公告)日：2023-06-29

申请号：US17987327

申请日：2022-11-15

Applicant: KUBOTA CORPORATION

Inventor： Atsushi JINNAI ,  Tomonari TSUCHIDA ,  Ryoma IWASE ,  Tomoyuki TANAKA ,  Takahiro MATSUO ,  Hiroyuki AIKAWA ,  Atsuro HAYAMI ,  Keitaro MORINAGA ,  Yosui NISHIJIMA ,  Satoru NAGANO ,  Takuma HOKEGUCHI

IPC: F16H57/04 ,  F16H57/037 ,  B60K17/28

CPC classification number: F16H57/0483 ,  F16H57/0435 ,  F16H57/0423 ,  F16H57/037 ,  F16H57/0457 ,  F16H57/0453 ,  F16H57/0445 ,  B60K17/28 ,  B62D49/06

Abstract: There is provided a work vehicle including a partition wall to keep partition between a first space zone as part of an internal space of the transmission case in which a differential mechanism is located and a second space zone as part of the internal space which is adjacent to the first space zone. An upper space is disposed above the partition wall and configured to allow lubricating oil scooped up from the first space zone by a ring gear to flow in the second space zone. A flow-out path is disposed below the upper space and configured to allow the lubricating oil to flow out of the second space zone to the first space zone.