公开(公告)号：US20020139600A1

公开(公告)日：2002-10-03

申请号：US09940251

申请日：2001-08-27

Applicant: KUBOTA CORPORATION

Inventor： Yasunobu Nakatani ,  Kenji Kato ,  Isamu Morimoto ,  Atsushi Shinkai ,  Keishiro Nishi

IPC: B60K001/00

CPC classification number: B60K17/105 ,  B60K26/02 ,  B60K26/04 ,  B60Y2200/41 ,  B62D49/0671 ,  F16H47/02

Abstract: A frameless type working vehicle includes an intermediate vehicle body 5 acting as a body forming member for interconnecting a front vehicle body 3 and a rear vehicle body 4. The intermediate vehicle body is formed of a case block 10 housing a hydrostatic stepless transmission (HST) 20. The case block 10 includes, formed integral with one another, a small diameter portion 11 connected to the rear vehicle body 4 and providing case walls for a pump P and a motor M of HST 20, a large diameter portion 12 connected to the front vehicle body 3 and having an upper edge at a higher level than an upper surface of the small diameter portion 11, and a transitional portion 12A disposed between the small diameter portion 11 and the large diameter portion 12. The large diameter portion 12 defines an accommodating space S1 for a main clutch 9 that receives drive from an engine E.

Abstract translation: 无框式作业车辆包括作为用于互连前车体3和后车体4的主体形成部件的中间车体5.中间车体由容纳静液压无级变速器（HST）的箱体10形成， 壳体块10包括彼此一体形成的连接到后车体4的小直径部分11，并且为HST 20的泵P和马达M提供壳壁，连接到 前车体3，并且具有比小直径部分11的上表面高的高度的上边缘，以及设置在小直径部分11和大直径部分12之间的过渡部分12A。大直径部分12限定 用于接收来自发动机E的驱动的主离合器9的容纳空间S1。

公开(公告)号：US20030033898A1

公开(公告)日：2003-02-20

申请号：US10215385

申请日：2002-08-08

Applicant: KUBOTA CORPORATION

Inventor： Isamu Morimoto ,  Hidetaka Yoshioka ,  Megumi Sawai ,  Kenichi Sato ,  Kiyoshi Hanamoto ,  Yasunobu Yamaue ,  Shinji Osawa ,  Makoto Saegusa ,  Shinji Yamamoto ,  Daisuke Kobayashi ,  Tatsuyuki Kashimoto

IPC: F16H059/00 ,  G05G009/00

CPC classification number: F16H59/10 ,  B60Y2200/41 ,  F16H59/02 ,  F16H2059/0256 ,  Y10T74/19223 ,  Y10T74/19251 ,  Y10T74/20018 ,  Y10T74/20159

Abstract: A change speed apparatus for a working vehicle that engages in an operation while moving forward and backward, includes a first shaft (14) for receiving driving torque from an engine, a second shaft (18) for transmitting the driving torque to a rear wheel differential, a change speed mechanism (9) for changing speed of the driving torque received from the first shaft and transmits the driving torque to the second shaft, and a shift lever (33) for selectively switching the change speed mechanism. The change speed mechanism (9) has a high forward speed stage for changing the speed of the driving torque received from the first shaft to a high forward speed for transmission to the second shaft, a low forward speed stage for changing the speed of the driving torque received from the first shaft to a low forward speed for transmission to the second shaft, a backward drive stage for changing the speed of the driving torque received from the first shaft to a low backward speed for transmission to the second shaft, and a neutral stage. The shift lever is movable along shift control paths including a transverse control path (P0) extending transversely, a first longitudinal control path (P1) extending longitudinally from one side of the transverse control path, a second longitudinal control path (P2) extending longitudinally from the one side of the transverse control path and spaced from the first longitudinal control path, and a third longitudinal control path (P3) extending longitudinally from the other side of the transverse control path. The high forward speed stage is selected when the shift lever is operated to an end (H) of the first longitudinal control path. The low forward speed stage is selected when the shift lever is operated to an end (L) of the second longitudinal control path. The backward drive stage is selected when the shift lever is operated to an end (R) of the third longitudinal control path. The neutral stage is selected when the shift lever is operated to the transverse control path.