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    TRANSMISSION STRUCTURE AND WORKING VEHICLE
    1.
    发明公开
    TRANSMISSION STRUCTURE AND WORKING VEHICLE 审中-公开

    公开(公告)号：EP3715671A3

    公开(公告)日：2020-11-18

    申请号：EP19203552.5

    申请日：2019-10-16

    Applicant: Kanzaki Kokyukoki Mfg. Co., Ltd.

    Inventor： IWAKI, Koji ,  OWADA, Kazuhiro ,  SASAHARA, Kengo

    IPC: F16H37/04 ,  F16H47/04 ,  F16H61/02 ,  F16H61/462 ,  B60K17/02 ,  B60K17/10 ,  F16H37/08

    Abstract: In a transmission structure according to this invention, speed change ratios of input side first and second transmission mechanisms (50(1)-(2)) are set so that the rotational speed of a planetary second element (38) is same when an HST output is set to a second HST speed in a first transmission state and when a second transmission state is engaged, and the rotational speed of a planetary first element (36) is same when the HST output is set to the second HST speed in the second transmission state and when the first transmission state is engaged. The speed change ratios of output side first and second transmission mechanisms (70(1)-(2)) are set so that the rotational speed developed in a speed change output shaft (45) when the HST output is set to the second HST speed is same in the first and second transmission states.

    Mechanical-hydraulic transmission gear system and method of controlling power transmission using the system
    4.
    发明公开
    Mechanical-hydraulic transmission gear system and method of controlling power transmission using the system 失效
    机械 - 液压传动系统和用于电力传输控制方法，具有这样的系统

    公开(公告)号：EP0754883A3

    公开(公告)日：1998-05-13

    申请号：EP96115594

    申请日：1989-05-31

    Applicant: KOMATSU MFG CO LTD

    Inventor： KANAYAMA NOBORU

    IPC: F16H3/74 ,  F16H47/02 ,  F16H61/42 ,  F16H61/421 ,  F16H61/431 ,  F16H61/46 ,  F16H61/462 ,  F16H1/46

    CPC classification number: F16H47/02 ,  F16H61/421 ,  F16H61/431 ,  F16H61/462

    Abstract: A mechanical-hydraulic transmission gear system for use in construction vehicles or construction equipment and a method of controlling power transmission using the system arranged such that when a prime mover is rotating at high speeds power transmission is effected only through a mechanical transmission gear to thereby reduce the power loss due to fluid pressure substantially to zero, whilst when the prime mover is rotating at low speeds power transmission is effected only through a hydraulic transmission gear so as to facilitate control of the speed of the vehicle and control of changing forward running over to reversing and vice versa. The mechanical-hydraulic transmission gear system comprises a hydraulic transmission gear (10) having a hydraulic pump (11) and a hydraulic motor (13); a mechanical transmission gear (30); change-over means (26) for changing forward running of the vehicle over to reversing and vice versa; a speed control means (27); a sensor means (22) for sensing the rotational speed of output shaft (14); and control means (20) for comparing the signals transmitted by the change-over means, the speed control means and the rotational speed sensor means so as to effect control of disconnection and connection of a clutch (31) mounted on an input shaft (2) of the mechanical transmission gear and control of discharge of fluid from the pump and the motor. The method of controlling power transmission using this system includes the steps of disconnecting the clutch of the mechanical transmission so as to transmit the power from the prime mover only through the hyraulic transmission gear to the output shaft when the rotational speed of the output shaft is lower than a predetermined value; and connecting the clutch of the mechanical transmission gear so as to transmit the power only through the mechanical transmission gear to the output shaft and minimizing the power required by the hydraulic transmission gear according to a command from the control means when the rotational speed of the output shaft is higher than the predetermined value.

    TRANSMISSION STRUCTURE
    5.
    发明公开
    TRANSMISSION STRUCTURE 审中-公开

    公开(公告)号：EP4443020A1

    公开(公告)日：2024-10-09

    申请号：EP24161287.8

    申请日：2024-03-04

    Applicant: KANZAKI KOKYUKOKI MFG. CO., LTD.

    Inventor： TAKAHASHI, Takumi ,  OGURA, Kohei ,  ITO, Fumiaki ,  INOUE, Tasuku

    IPC: F16H47/04 ,  F16H61/431 ,  F16H61/462 ,  F16H61/472

    CPC classification number: F16H61/431 ,  F16H47/04 ,  F16H2037/088620130101 ,  F16H61/462 ,  F16H61/47 ,  F16H59/44 ,  F16H2059/687620130101 ,  F16H61/472

    Abstract: [Problem] The problem is in providing a transmission structure which includes low gear and high gear transmission mechanisms and an HST and can improve the vehicle speed responsiveness at the time of switching between a low gear transmission state and a high gear transmission state.
    [Solution] At the time of switching between low gear and high gear transmission states, the present invention creates an idling state in which the power transmission state from a drive source to a drive wheel is cut off, and calculates an excess vehicle speed HST gear ratio by adding an excess correction value, which is for changing the vehicle speed at the switching completion point in time in excess of the actual vehicle speed by a predetermined speed, to an actual vehicle speed ratio, which represents an HST gear ratio that causes the vehicle speed at the switching completion point in time to match the actual vehicle speed attained immediately before the completion of the switching, so as to operate an HST actuator using the excess vehicle speed HST gear ratio as a control target value during the idling state.

    METHOD FOR AUTOMATICALLY CONTROLLING THE GEAR RATIO OF A TRANSMISSION OF A VEHICLE, CONTROL SYSTEM, VEHICLE AND COMPUTER PROGRAM FOR CARRYING OUT SUCH METHOD
    8.
    发明公开
    METHOD FOR AUTOMATICALLY CONTROLLING THE GEAR RATIO OF A TRANSMISSION OF A VEHICLE, CONTROL SYSTEM, VEHICLE AND COMPUTER PROGRAM FOR CARRYING OUT SUCH METHOD 审中-公开
    自动控制车辆传动装置的齿轮比的方法，控制系统，车辆和计算机程序以实施这种方法

    公开(公告)号：EP3217043A1

    公开(公告)日：2017-09-13

    申请号：EP16425021.9

    申请日：2016-03-10

    Applicant: Dana Rexroth Transmission Systems S.r.l.

    Inventor： The designation of the inventor has not yet been filed

    IPC: F16H61/462 ,  B60W10/06 ,  B60W10/103 ,  B60W30/188

    CPC classification number: F16H61/462 ,  B60W10/06 ,  B60W10/103 ,  B60W30/1884 ,  B60Y2200/415

    Abstract: The method according to the invention, for automatically controlling the gear ratio of a transmission (1, 1') of a vehicle such as a wheel loader, comprises the step of determining the disturbance torque fraction (T_ext) of the load torque applied to the first input shaft (3) at a predetermined instant (i) on the basis of the rotational speed (n_eng) of the first input shaft (3) and of one or more of the following quantities: A) the torque (T_eng) applied to the engine shaft or to the first input shaft (3) by the primary engine (29); B) the torque (T_c) applied at least to the first output shaft (19); C) the rotational inertia of the primary engine (J_eng) reduced to the first input shaft (3); D) the rotational inertia (J_htv) of the transmission (1) reduced to the first input shaft (3).

    Abstract translation: 根据本发明的用于自动控制诸如轮式装载机的车辆的变速器（1,1'）的传动比的方法包括以下步骤：确定施加到轮式装载机的负载转矩的干扰转矩分数（T_ext） 在第一输入轴（3）的转速（n_eng）的基础上的预定时刻（i）以及一个或多个以下量的第一输入轴（3）：A）施加到 发动机轴或由主发动机（29）连接至第一输入轴（3）; B）至少施加到第一输出轴（19）的扭矩（T_c）; C）主发动机的转动惯量（J_eng）减小到第一输入轴（3）; D）变速器（1）的转动惯量（J_htv）减小到第一输入轴（3）。

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