DRIVE SYSTEM HAVING AT LEAST ONE HYDRAULIC ACTUATOR,申请号EP20110708414-传众专利搜索

DRIVE SYSTEM HAVING AT LEAST ONE HYDRAULIC ACTUATOR

申请公布号：EP2569546(A1)

申请号：EP20110708414

申请日期：2011.03.15

申请公布日期：2013.03.20

申请人：

HYDAC ELECTRONIC GMBH

发明人：HEROLD, FRANK;REMUS, KAI;KATTLER, FRANK

分类号：F15B7/00

主分类号：F15B7/00

摘要：<p>The invention relates to a drive system having at least one hydraulic actuator (2), which is supplied with pressure medium (4) by means of at least one pressure-medium pump (3) in a main circuit, the pressure-medium pump (3) being a rotational-speed-controlled pressure-medium pump that is driven by a motor (5) at a variable rotational speed and a controlled torque, said drive system being characterized in that leakage fluid (7) that escapes from a displacement chamber (6) of the pressure-medium pump (3) is discharged through a fluid-conducting connection (8) having at least one check valve (9, 16), and the at least one check valve (9, 16) is installed in the fluid-conducting connection (8) in such a way that the check valve prevents pressure medium from flowing back out of the main circuit into the displacement chamber (6) or another interior chamber of the pressure-medium pump (3) and feeds leakage fluid (7) into the main circuit of the drive system (1) when there is a slight excess pressure.</p>