公开(公告)号：WO1998007992A2

公开(公告)日：1998-02-26

申请号：PCT/RU1997000265

申请日：1997-08-20

Applicant: PASYNKOV, Rafail Moiseevich ,  SMOLYANITSKY, Eduard Anatolievich ,  LUKASHOV, Vladimir Semenovich

IPC: F15B00/00

CPC classification number: F15B11/17 ,  E02F9/2239 ,  E02F9/2292 ,  E02F9/2296 ,  F15B21/14 ,  F15B2211/20546 ,  F15B2211/20569 ,  F15B2211/20576 ,  F15B2211/71 ,  F15B2211/78

Abstract: The present invention may be used in excavators, cranes, manipulators, loaders and bulldozers as well as in other machines with multiple engines or in cyclic-action mechanisms comprising hydraulic cylinders and motors. This invention essentially relates to a hydraulic actuator which exhibits high energy-saving capacities due to its reduced fuel and power consumption during combined operations. This device also has an improved reliability and causes little thermal losses thanks to the volume adjustment and energy recovery. The hydraulic actuator of the present invention comprises a pump unit, hydraulic cylinders, hydraulic motors, an inflow and cooling unit, hydraulic distributing devices as well as a working-fluid tank. The pump unit includes at least two adjustable double pumps each consisting of two hydraulic reversible machines having different and varying working volumes. The two hydraulic reversible machines are fitted with control units and are kinetically connected together. The chambers of the hydraulic reversible machines having the largest working volume are connected in closed loop to the chambers of the hydraulic cylinders and motors. One of the chambers of said machines having the smallest working volume is connected by a hydraulic distributing device to the piston cavity of a hydraulic cylinder or to the tank, while the other chamber having the smallest working volume is connected to said tank. The relation between the diameters of the pistons and the diameters of the hydraulic cylinder rods is a function of the relation between the largest and the smallest working volumes of said hydraulic reversible machines.

Abstract translation: 本发明可以用于挖掘机，起重机，操纵器，装载机和推土机以及具有多个发动机的其它机器或包括液压缸和马达的循环动作机构中。 本发明基本上涉及由于在组合操作期间燃料和功率消耗降低而显示出高节能能力的液压致动器。 该设备还具有改进的可靠性，并且由于音量调节和能量回收而导致很少的热损失。 本发明的液压致动器包括泵单元，液压缸，液压马达，流入和冷却单元，液压分配装置以及工作流体箱。 泵单元包括至少两个可调节的双泵，每个由具有不同和变化的工作容积的两个液压可逆机构组成。 两台液压可逆机器配有控制单元，动力学连接在一起。 具有最大工作容积的液压可逆机器的腔室以闭环方式连接到液压缸和马达的腔室。 具有最小工作体积的所述机器的一个室通过液压分配装置连接到液压缸的活塞腔或罐，而具有最小工作容积的另一个室连接到所述罐。 活塞的直径和液压缸的直径之间的关系是所述液压可逆机器的最大和最小工作容积之间的关系的函数。