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    TRACKED VEHICLE
    1.
    发明公开
    TRACKED VEHICLE 审中-公开

    公开(公告)号：EP3929066A1

    公开(公告)日：2021-12-29

    申请号：EP19915946.8

    申请日：2019-02-19

    申请人： Hitachi Construction Machinery Co., Ltd.

    发明人： UEKI, Tomohiro ,  SHIBUKAWA, Takeshi ,  MORITA, Tomoharu ,  IWABUCHI, Yutaro ,  YAMABUKI, Taira ,  SUGIYAMA, Koki

    IPC分类号： B62D55/08

    摘要： A traveling motor (19) of a reduction device (16) is mounted on a reduction gear (17) in a state protruding to an inner side in a left-and-right direction from a left side frame (7) and a right side frame (14) toward a center frame (6). Moreover, a motor guard (22) provided on a rear side which is the other side in a front-and-rear direction of each of the side frames (7) and (14), respectively, and covering the traveling motor (19) is constituted by an inner guard member (23) covering the traveling motor (19) and an outer guard member (25) covering the inner guard member (23) from an outer side.

    REDUCTION GEAR
    3.
    发明公开
    REDUCTION GEAR 审中-公开
    减速器

    公开(公告)号：EP3306134A1

    公开(公告)日：2018-04-11

    申请号：EP16802862.9

    申请日：2016-03-01

    申请人： Hitachi Construction Machinery Co., Ltd.

    发明人： SHINOHARA, Takeshi ,  SHIBUKAWA, Takeshi

    IPC分类号： F16H1/46 ,  F16H57/04

    摘要： A reduction device (18) includes a fixed-side housing (19) accommodating a hydraulic motor (12) having an output shaft (16) and a rotating-side housing (21) rotated with respect to the fixed-side housing (19), and a first-stage planetary gear reduction mechanism (24) having a first sun gear (28) and a second-stage planetary gear reduction mechanism (32) having a second sun gear (33) are provided in the rotating-side housing (21). The first-stage planetary gear reduction mechanism (24) has a rotational shaft (25) having one side in an axial direction spline-connected with the output shaft (16), while the first sun gear (28) is provided on the other side in the axial direction of the rotational shaft (25). A small-diameter shaft (27B) is provided on the rotational shaft (25), and first and second half bushes (40, 41) are fitted with the small-diameter shaft (27B) from a radial direction. Thereby, the first sun gear (28) and a stepped part (34A) of the second sun gear (33) are slidably brought into contact with flange parts (40B, 41B) of the first and second half bushes (40, 41).

    摘要翻译： 减速装置18包括容纳具有输出轴16的液压马达12和相对于固定侧壳体19旋转的旋转侧壳体21的固定侧壳体19， 在该旋转侧壳体（内部）设有具有第一太阳轮（28）的第一级行星齿轮减速机构（24）和具有第二太阳轮（33）的第二级行星齿轮减速机构（32） 21）。 第一级行星齿轮减速机构24具有旋转轴25，该旋转轴25的轴向一侧与输出轴16花键连接，而第一太阳齿轮28设置在另一侧 在旋转轴（25）的轴向上。 在旋转轴25上设有小直径轴27B，从半径方向将小径轴27B与第一以及第二半衬套40,41嵌合。 由此，第一太阳齿轮28和第二太阳齿轮33的阶梯部34A与第一半衬套40和第二半衬套41的凸缘部40B，41B滑动接触。