公开(公告)号：EP3184809A1

公开(公告)日：2017-06-28

申请号：EP14900246.1

申请日：2014-08-22

申请人： Komatsu Ltd.

发明人： NABATA, Jun ,  OCHIAI, Takashi ,  HORI, Shuuji

IPC分类号： F03C1/253 ,  F04B1/22

CPC分类号： F01P5/04 ,  F01P7/044 ,  F04B1/24 ,  F04B2201/0805 ,  F16K31/0682 ,  G11B7/0903

摘要： An object of the present invention is to provide a hydraulic pump/motor with a rotation detection mechanism, capable of detecting a rotational direction and a rotation speed of a rotational shaft with a simple structure and easily performing machining of a detection target section. To achieve the object, the rotation detection mechanism includes a detection target section 52 including three or more recesses 6a to 6c (6) formed on an outer peripheral surface of a cylinder block 14, the three or more recesses 6 being formed in a unique arrangement pattern with different arc lengths R1 to R3 between the three continuous recesses with respect to a forward rotational direction F of a rotational shaft 13 and being formed so as not to include the unique arrangement pattern with respect to a reverse rotational direction B of the rotational shaft 13, and a rotation sensor 50 arranged in a casing in a state of facing the detection target section 52 and configured to detect the detection target section 52. Each of the three or more recesses 6 having a cross section having a same semicircular shape, perpendicular to a direction of the rotational shaft 13.

摘要翻译： 本发明的目的在于提供一种具有旋转检测机构的液压泵/马达，能够以简单的结构检测旋转轴的旋转方向和旋转速度，并且容易进行检测对象部位的加工。 为了实现该目的，旋转检测机构包括检测目标部分52，该检测目标部分52包括形成在气缸体14的外周表面上的三个或更多个凹部6a至6c（6），三个或更多个凹部6形成为独特的布置 在相对于旋转轴13的正向旋转方向F的三个连续凹部之间具有不同的弧长R1至R3并且被形成为不包括相对于旋转轴的反向旋转方向B的唯一布置模式 13以及旋转传感器50，该旋转传感器50以与检测对象部位52相对的状态配置在壳体内，检测检测对象部位52.三个以上的凹部6具有相同的半圆形状， 朝向旋转轴13的方向。