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1. 发明申请

WO1997028316A1 SWING TYPE HYDRAULIC EXCAVATOR 审中-公开
标题翻译： SWING型液压挖掘机
公开(公告)号：WO1997028316A1
公开(公告)日：1997-08-07
申请号：PCT/JP1997000182
申请日：1997-01-28
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD. , YAMADA, Kazuyoshi , KOBORI, Masashi , NISHIMURA, Takaharu
发明人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
IPC分类号： E02F03/36
CPC分类号： E02F3/32 , E02F3/301 , E02F3/325 , E02F3/384 , E02F3/964 , E02F9/0833 , E02F9/0891
摘要： Formed on an end portion of an upper cover (8) on a side of a work front (5) is a curved portion (45), by which interference with the work front (5) is avoided. The curved portion (45) comprises a concave surface (45A) having a central axis on an axis (m) of a vertical pin of a swing post (4), a first stepped portion (45B) provided on a lower end of the concave surface (45A) and defining a substantially uniform gap between it and a path, which a rear projection (4A) of the swing post (4) describes when the work front (5) swings, and a second stepped portion (45C) provided on a vertically middle portion of the concave surface (45A) and provided with a substantially horizontal surface (45C1), by which scaffolding is ensured. The concave surface (45A) is shaped to extend along and define a gap between it and a path, which a rear surface of a boom (16) describes when the work front (5) swings in its minimum swinging posture. The first stepped portion (45B) comprises a substantially vertical curved surface (45B1) formed contiguous to the lower end of the concave surface (45A) and defining a substantially uniform gap between it and a path, which the rear projection (4A) of the swing post (4) describes when the work front (5) swings, and a substantially horizontal surface (45B2) formed contiguous to the curved surface (45B1) on the side of the work front (5) and defining a substantially uniform gap between it and a path, which a lower end of the rear projection (4A) of the swing post (4) describes when the work front (5) swings.
摘要翻译：在工作前面（5）侧的上盖（8）的端部上形成弯曲部（45），由此避免与工作前部（5）的干涉。弯曲部分（45）包括在摆动柱（4）的垂直销的轴线（m）上具有中心轴的凹面（45A），设置在凹部（4）的下端的第一台阶部分表面（45A）并且在其与路径之间限定基本上均匀的间隙，当工作前缘（5）摆动时，摆动柱（4）的后突起（4A）描述;以及第二台阶部分（45C），其设置在所述凹面（45A）的垂直中间部分设置有大致水平的表面（45C1），由此确保了脚手架。凹面（45A）成形为沿工件前缘（5）以最小的摆动姿态摆动时在悬臂（16）的后表面与路径之间延伸并限定一个间隙。第一台阶部分（45B）包括与凹面（45A）的下端邻接形成的基本垂直的弯曲表面（45B1），并且在其与路径之间形成基本均匀的间隙，摆动杆（4）描述了工件前部（5）何时摆动，以及在工作前部（5）侧面上与弯曲表面（45B1）邻接形成的基本上水平的表面（45B2），并且在其之间限定了基本均匀的间隙以及当工作前缘（5）摆动时，摆动柱（4）的后突起（4A）的下端描述的路径。

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