公开(公告)号：KR100816661B1

公开(公告)日：2008-03-26

申请号：KR1020070025444

申请日：2007-03-15

Applicant: 울산대학교 산학협력단

Inventor： 안경관 ,  윤주현 ,  강종민 ,  이상봉

IPC: F15B11/02 ,  F15B11/00

CPC classification number: F15B11/02 ,  B60Y2200/41 ,  F15B13/02 ,  F15B2211/205 ,  F15B2211/20515

Abstract: An energy saving type hydraulic circuit is provided to improve durability and save manufacturing and maintenance costs by using a low capacity electric motor. An energy saving type hydraulic circuit includes an electric motor(9), a fixed hydraulic pump(8), an actuator(1), an unloading valve(21), and a direction conversion valve(12). The fixed hydraulic pump is connected with the electric motor in one body and is driven in both directions. The actuator is installed on working fluid flowing paths(14,15) connected with the hydraulic pump and is driven by working fluid discharged from the hydraulic pump. The unloading valve is installed on a divergence path(20) connected with the working fluid flowing paths in parallel, opens the divergence path in accordance with a driving signal, and initially drives the electric motor in a no-load state. The direction conversion valve is installed between a hydraulic tank(13) and the working fluid flowing paths.

Abstract translation: 提供一种节能型液压回路，以通过使用低容量电动机来提高耐久性并节省制造和维护成本。 节能型液压回路包括电动机（9），固定液压泵（8），致动器（1），卸载阀（21）和方向转换阀（12）。 固定液压泵与电动机连接在一体，并沿两个方向驱动。 致动器安装在与液压泵连接的工作流体流动路径（14,15）上并由从液压泵排出的工作流体驱动。 卸载阀安装在与工作流体流动路径并联连接的发散路径（20）上，根据驱动信号打开发散路径，并且最初驱动电动机处于空载状态。 方向转换阀安装在液压箱（13）和工作流体流动路径之间。

公开(公告)号：KR1020090111964A

公开(公告)日：2009-10-28

申请号：KR1020080037597

申请日：2008-04-23

Applicant: 울산대학교 산학협력단 ,  볼보 컨스트럭션 이큅먼트 에이비

Inventor： 안경관 ,  이병룡 ,  윤홍수 ,  이민수 ,  강종민 ,  김재홍 ,  송주영

IPC: E02F9/22 ,  E02F9/20

CPC classification number: E02F9/2217 ,  B60Y2200/412 ,  E02F9/2267 ,  E02F9/2296 ,  F15B2211/20515

Abstract: PURPOSE: An energy saving type hydraulic circuit is provided to minimize energy loss by supplying working oil to a hydraulic cylinder using an electric motor. CONSTITUTION: A hydraulic cylinder(1) is installed in a flow channel of a hydraulic pump and operated with working fluid of the hydraulic pump. The hydraulic pump is driven according to the rotational direction or speed of an electric motor(10). A branch valve(3) is installed in the flow channel between the hydraulic cylinder and the hydraulic pump and converts a spool according to a control signal from the outside. A generator(16) is axis-connected in a hydraulic motor(17). The hydraulic motor is driven by the working fluid. An electronic control unit(12) drives the branch valve or the electric motor by outputting the control signal.

Abstract translation: 目的：提供一种节能型液压回路，通过使用电动机向液压缸供给工作油来最小化能量损失。 构成：液压缸（1）安装在液压泵的流道中，并与液压泵的工作流体一起操作。 液压泵根据电动机（10）的旋转方向或速度被驱动。 分支阀（3）安装在液压缸和液压泵之间的流动通道中，并根据来自外部的控制信号转换阀芯。 发电机（16）在液压马达（17）中轴向连接。 液压马达由工作液驱动。 电子控制单元（12）通过输出控制信号来驱动分支阀或电动机。

公开(公告)号：KR1020080107494A

公开(公告)日：2008-12-11

申请号：KR1020070055298

申请日：2007-06-07

Applicant: 울산대학교 산학협력단 ,  볼보 컨스트럭션 이큅먼트 에이비

Inventor： 안경관 ,  윤주현 ,  강종민 ,  김재홍 ,  송주영

IPC: F15B15/00 ,  F15B11/00

CPC classification number: F15B13/02 ,  B60Y2200/412 ,  F15B11/024 ,  F15B2211/20515

Abstract: Potential energy restoring device for the hydraulic cylinder and reviving method are provided to save the energy and to improve the efficiency of the oil-hydraulic system since the operating oil amount which is supplied to the hydraulic cylinder is controlled according to the rotational direction and speed of the electric motor. A potential energy restoring device for the hydraulic cylinder comprises an electric motor(50) driven according to the control signal input from outside, a fixed hydraulic pump(51) which is driven while being connected to the electric motor, a hydraulic cylinder(54) which is expanded and contracted by the working fluid discharged according to the rotational direction and speed of the electric motor from the hydraulic pump, a direction selecting valve(56) feeding back the working fluid from the hydraulic cylinder to the pressure-oil tank, a divergence valve(57) in which the inside spool is switched with the control signal input from outside in case the load of the hydraulic cylinder is descended, a hydraulic motor(58) driven by the working fluid fed back through the divergence valve from the hydraulic cylinder, a generator(59) axis-connected in the hydraulic motor, a converter(60) converting the electrical energy generated by the generator through the hydraulic motor into the direct current, a battery(61) charging the direct current transformed with converter, a main controller(ECU) outputting the control signal in order to run the converter, the divergence valve and the electric motor according to the signal input from outside.

Abstract translation: 提供液压缸的潜能恢复装置和恢复方法，以节省能量并提高油压系统的效率，因为供应到液压缸的工作油量根据旋转方向和速度 电动机。 一种用于液压缸的势能恢复装置包括根据从外部输入的控制信号驱动的电动机（50），连接到电动机的驱动的固定液压泵（51），液压缸（54） 其由根据电动机的旋转方向和速度从液压泵排出的工作流体膨胀和收缩;将工作流体从液压缸反馈到压力油箱的方向选择阀， 在液压缸的负载下降的情况下，在从外部输入的控制信号切换内侧阀芯的分接阀（57）中，由通过分流阀从液压回送的工作流体驱动的液压马达（58） 气缸，轴向连接在液压马达中的发电机（59），转换器（60），通过液压马达将发电机产生的电能转换为直流 租用，用转换器转换的直流电的电池（61），输出控制信号的主控制器（ECU），以便根据从外部输入的信号来运行转换器，发散阀和电动机。