公开(公告)号：US10309390B2

公开(公告)日：2019-06-04

申请号：US14452112

申请日：2014-08-05

Applicant: Danfoss Power Solutions Inc.

Inventor： Peter Zavadinka ,  Stanislov Smolka ,  Pavol Sedo

IPC: F04B1/32 ,  F04B49/00 ,  F04B49/08 ,  F04B49/12

Abstract: Control device for hydraulic variable displacement pumps operated in an open hydraulic circuit and adjustable in their displacement volume by means of a servo control device. The control device comprises a control piston with two control edges to which pressure can be applied by means of pressurized pressure fluid from a variable displacement pump, the control piston being mounted in a housing so that it shifts longitudinally. The housing of the control piston comprises an inlet for the connection of a high pressure line of a variable displacement pump, an outlet which can be connected to a tank and a servo connection which can be linked to a servo cylinder, whereby a link between the inlet and the servo connection can be made via a first control edge. It is possible to create a link between the servo connection and the outlet via a second control edge.

公开(公告)号：US20150050165A1

公开(公告)日：2015-02-19

申请号：US14452112

申请日：2014-08-05

Applicant: Danfoss Power Solutions Inc.

Inventor： Peter Zavadinka ,  Stanislav Smolka ,  Pavol Sedo

IPC: F04B49/08 ,  F04B49/00 ,  F04B1/32

CPC classification number: F04B49/08 ,  F04B1/324 ,  F04B49/002

Abstract: Control device for hydraulic variable displacement pumps operated in an open hydraulic circuit and adjustable in their displacement volume by means of a servo control device. The control device comprises a control piston with two control edges to which pressure can be applied by means of pressurized pressure fluid from a variable displacement pump, the control piston being mounted in a housing so that it shifts longitudinally. The housing of the control piston comprises an inlet for the connection of a high pressure line of a variable displacement pump, an outlet which can be connected to a tank and a servo connection which can be linked to a servo cylinder, whereby a link between the inlet and the servo connection can be made via a first control edge. It is possible to create a link between the servo connection and the outlet via a second control edge.

Abstract translation: 用于液压可变排量泵的控制装置，其操作在开放的液压回路中，并通过伺服控制装置可调节其排量。 控制装置包括具有两个控制边缘的控制活塞，通过来自可变排量泵的加压压力流体可以施加压力，控制活塞安装在外壳中，使其纵向移动。 控制活塞的壳体包括用于连接可变排量泵的高压管线的入口，可连接到罐的出口和可连接到伺服缸的伺服连接件， 入口和伺服连接可以通过第一控制边缘进行。 可以通过第二控制边缘在伺服连接和出口之间建立连接。