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    • 11. 发明授权
    • 건설장비 주행속도 제어용 유압 구동장치
    • 用于控制施工设备速度的液压驱动装置
    • KR1019920005501B1
    • 1992-07-06
    • KR1019880017995
    • 1988-12-30
    • 대우중공업(주)
    • 이성철김일선
    • E02F3/65E02F9/20
    • The system for controlling running speed by two speeds of high and low, has a velocity-constant type hydraulic motor to get high torque in high speed and preventing power decreasing in low speed by cutting the maximum flow rate of a main pump and keeping the maximum rpm of engine in low-speed controlling. The system comprises a velocity-constant type hydraulic motor (11) connected with the main pump (13) and an oil tank (14) via direction change valve (12); means for controlling running controlling piston (16) to control negative pilot spool (15) mounted in a pump regulator of the motor (11). The means for controlling the piston (16), comprises a pilot line (19) connected with pilot pump (18) and the piston (16) via speed-change valve (17); a negative pilot line (20) connected with the tank (14) and the piston (16).
    • 用于控制高速和低速两个运行速度的系统具有速度常数型液压马达,通过切割主泵的最大流量并保持最大值,在高速下获得高扭矩并防止低速下降的功率 发动机转速低速控制。 该系统包括通过方向切换阀(12)与主泵(13)连接的速度常数型液压马达(11)和油箱(14)。 用于控制行驶控制活塞(16)以控制安装在电动机(11)的泵调节器中的负先导阀芯(15)的装置。 用于控制活塞(16)的装置包括通过变速阀(17)与先导泵(18)和活塞(16)连接的先导管线(19)。 与所述箱(14)和所述活塞(16)连接的负先导管路(20)。
    • 15. 发明公开
    • 굴삭기의 도저 장치
    • 挖掘机推土机装置
    • KR1020160150219A
    • 2016-12-29
    • KR1020150087419
    • 2015-06-19
    • 현대중공업 주식회사
    • 윤혁준방영민
    • E02F3/76E02F3/65E02F3/815
    • 본발명은굴삭기의도저장치에관한것으로서, 보다구체적으로는버킷동작에의해도저용실린더커버가파손되는것을방지할수 있는굴삭기의도저장치에관한것이다. 이를위해, 굴삭기에설치되는도저장치에있어서, 굴삭기의프레임일측에고정되는브라켓; 상기브라켓의상부에설치되고피스톤왕복운동을하는실린더; 상기브라켓의하단에설치되어회동하되, 상기실린더의피스톤로드가체결되어실린더의왕복운동에의해회동가능한제1링크; 상기브라켓의중심부분에일측이회동가능하게설치되고, 상측으로커버고정부가설치된제2링크; 상기커버고정부에설치되어실린더를보호하고, 일측은유동적으로회동가능하고타측은커버고정부로부터용이하게분리되도록형성된실린더커버; 및상기제1링크와제2링크의일측끝단에힌지고정되고, 지면의흙을모으기위한배토판이설치된블레이드;를포함하여구성되는굴삭기의도저장치를제공한다.