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公开(公告)号：USD970559S1
公开(公告)日：2022-11-22
申请号：US29820249
申请日：2021-12-21
设计人： Zhimin Guo , Xiaogang Wang , Gang Chen , Shujun Shen , Hui Jin
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公开(公告)号：US11841716B2
公开(公告)日：2023-12-12
申请号：US17559193
申请日：2021-12-22
发明人： Zhongxiao Ma , Likui Zhai , Shenzhi He
CPC分类号： G05D16/101 , G05D16/0404
摘要： Disclosed is a load-sensing multi-way valve work section comprising a valve body, which comprises a compensation valve and a reversing valve both formed therein, wherein the compensation valve is provided with a compensation valve bore formed in the valve body and a compensation valve spool accommodated in the compensation valve bore, with a compensation valve oil inlet chamber, a compensation valve oil outlet chamber, a spring-side control chamber and a springless-side control chamber all being formed inside the compensation valve bore; wherein the reversing valve is provided with a reversing valve bore formed in the valve body and a reversing valve spool accommodated in the reversing valve bore, the reversing valve spool being configured to control communications among a main oil inlet chamber, a first working oil chamber, a second working oil chamber, a first oil return chamber, a second oil return chamber, a first load-sensing feedback pressure sensing opening and a second load-sensing feedback pressure sensing opening formed in the reversing valve bore, the compensation valve oil outlet chamber being communicated to the main oil inlet chamber; and wherein the load-sensing multi-way valve work section also defines a feedback passage formed within the valve body, the feedback passage being configured to communicate one of the first and second load-sensing feedback pressure sensing openings with the spring-side control chamber depending on a position of the reversing valve spool in the reversing valve bore.
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公开(公告)号：USD964426S1
公开(公告)日：2022-09-20
申请号：US29687951
申请日：2019-04-17
设计人： Zhimin Guo , Xiaogang Wang , Gang Chen , Shujun Shen , Hui Jin
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公开(公告)号：US20240200686A1
公开(公告)日：2024-06-20
申请号：US18541804
申请日：2023-12-15
发明人： Zhongxiao MA , Yanre LUO , Linmu ZHANG , Xueli LU
CPC分类号： F16K31/602 , F16K31/523
摘要： An actuator and a spool type directional control valve is disclosed. The actuator includes a catcher and a shaft. The catcher is provided with a first connecting portion and a second connecting portion. The first connecting portion is used to connect to a spool, and the second connecting portion includes a first limiting portion and an avoidance slot which are connected in a circumferential direction. The shaft includes a shaft body and a control member. The shaft body is used to connect to an operation mechanism and is driven to rotate by the operation mechanism, so that: the control member is capable of abutting against the first limiting portion, and driving the catcher to rotate forward by a first angle a via the first limiting portion so as to drive the spool move forward to a first working position; and the control member is capable of rotating freely in the avoidance slot, and the maximum rotation angle c of the control member in the avoidance slot is not less than the first angle a. With the actuator, the hysteresis of the directional control valve may be reduced, and asymmetrical hysteresis of the directional control valve when the spool moving in different directions can also be avoided.
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公开(公告)号：US20220206517A1
公开(公告)日：2022-06-30
申请号：US17559193
申请日：2021-12-22
发明人： Zhongxiao Ma , Likui Zhai , Shenzhi He
摘要： Disclosed is a load-sensing multi-way valve work section comprising a valve body, which comprises a compensation valve and a reversing valve both formed therein, wherein the compensation valve is provided with a compensation valve bore formed in the valve body and a compensation valve spool accommodated in the compensation valve bore, with a compensation valve oil inlet chamber, a compensation valve oil outlet chamber, a spring-side control chamber and a springless-side control chamber all being formed inside the compensation valve bore; wherein the reversing valve is provided with a reversing valve bore formed in the valve body and a reversing valve spool accommodated in the reversing valve bore, the reversing valve spool being configured to control communications among a main oil inlet chamber, a first working oil chamber, a second working oil chamber, a first oil return chamber, a second oil return chamber, a first load-sensing feedback pressure sensing opening and a second load-sensing feedback pressure sensing opening formed in the reversing valve bore, the compensation valve oil outlet chamber being communicated to the main oil inlet chamber; and wherein the load-sensing multi-way valve work section also defines a feedback passage formed within the valve body, the feedback passage being configured to communicate one of the first and second load-sensing feedback pressure sensing openings with the spring-side control chamber depending on a position of the reversing valve spool in the reversing valve bore.
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公开(公告)号：US10767667B2
公开(公告)日：2020-09-08
申请号：US15812516
申请日：2017-11-14
发明人： Zhimin Guo , Stanislav Smolka , Carsten Fiebing
摘要： The present invention relates to an electronically controlled valve for a variable displacement pump, a hydraulic pump and a hydraulic pump system with switchable control functions. Multiple control functions of different types of hydraulic pumps can be implemented via one single electronically controlled valve combined with control elements and sensors. The hydraulic pump systems can be easily integrated into the overall application systems for intelligent control.
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