公开(公告)号：US10570893B2

公开(公告)日：2020-02-25

申请号：US15165976

申请日：2016-05-26

申请人： Kanzaki Kokyukoki Mfg. Co., Ltd.

发明人： Toshifumi Yasuda ,  Daisuke Murashima ,  Takehiro Ota

IPC分类号： F04B1/32 ,  F04B27/22 ,  F04B1/324

摘要： A housing of a hydraulic pump is configured to have a servo unit detachably attached thereto so as to control tilt direction and angle of its movable swash plate. A port block is formed therein with a pair of main ports and, and a pair of main fluid passages and fluidly connecting respective main ports and to cylinders in its cylinder block. Main ports are used to have respective external pipes connected thereto so as to fluidly connect the hydraulic pump to a hydraulic motor disposed outside of the hydraulic pump, thereby constituting a hydrostatic transmission.