发明授权
- 专利标题： Truck frame for a construction machine
- 专利标题（中）： 建筑机械的车架
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申请号： US10514937申请日： 2003-11-21
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公开(公告)号： US07338081B2公开(公告)日： 2008-03-04
- 发明人: Kouhei Urase , Hironao Ishikawa , Saori Sawai
- 申请人： Kouhei Urase , Hironao Ishikawa , Saori Sawai
- 申请人地址： JP Tokyo
- 专利权人： Hitachi, Construction Machinery Co., Ltd.
- 当前专利权人： Hitachi, Construction Machinery Co., Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Mattingly, Stanger, Malur & Brundidge, P.C.
- 优先权： JP2002-345933 20021128
- 国际申请： PCT/JP03/14934 WO 20031121
- 国际公布： WO2004/048182 WO 20040610
- 主分类号： B62D24/00
- IPC分类号： B62D24/00
摘要：
A left fore leg (31) is formed to shape by a casting means, integrating an inner joint portion (31A), an outer joint portion (31B) and an intermediate tubular portion (31C) into an unitary tubular structure. In this case, a joining end (31A1) of the inner joint portion (31A) as well as an outer joining end (31B1) of the outer joint portion (31B) is in the form of an open end of a rectangular shape. Accordingly, it becomes possible to cut the production cost of truck frame (11) and to form a longer welding bead around the outer periphery of the respective inner and outer joining ends (31A1) and (31B1) to enhance the joint strength between the inner joint portion (31A) and a center frame (12) as well as the joint strength between the outer joint portion (31B) and a side frame (22).
公开/授权文献
- US20050225069A1 Truck frame for a construction machine 公开/授权日：2005-10-13
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