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最近，三一重工股份有限公司推出了新研制开发的ＴＱ２３０履带式全液压推土机。该推土机减少了主离合器（或液力变矩器）、传动轴、变速器、中央传动、转向离合器等机械传动部件及相关复杂的操纵系统，由微电脑控制的两个独立的液压系统（包括泵、阀、马达和减速机构）驱动左
Recently, Sany Heavy Industry Co., Ltd. introduced a newly developed TQ230 track-type full hydraulic bulldozer. The bulldozer reduces mechanical transmission components such as the main clutch (or torque converter), drive shaft, transmission, central drive, steering clutch and related complex control systems. Two independent hydraulic systems controlled by the microcomputer, including pumps, Valve, motor and reduction gear) drive left