To provide an upper frame for construction equipment mounted to swing on a lower driving structure, in which right and left side plates can be supported by exhibiting rigidity and flexibility against load being transferred to fixing pins through a working device during working.
In the upper frame for construction equipment mounted to swing on the lower driving structure and provided with the working device, the upper frame 2 for the construction equipment includes a base plate 13 on which a driving means for swing the upper frame is mounted, the right and left side plates 14 and 15 vertically welded on the base plate to face each other and composed of inner and outer vertical plates to which a boom and a boom cylinder are rotatably fixed by fixing pins 16 and 17, and a joint connection plate having both sides welded on inner sides of the inner vertical plates and a lower end part welded on the base plate, and supporting the right and left side plates by exhibiting rigidity and flexibility when reaction load is generated on the fixing pins due to the load generated on the working device during working.
| JP2006199103 | CONSTRUCTION MACHINE |
| WO/2006/038337 | WORKING VEHICLE |
SHIN JAI WOOK
HONG KYOUNG CHEOL
| JP2000265490A | 2000-09-26 | |||
| JP2005030090A | 2005-02-03 | |||
| JPS5664460U | 1981-05-30 |
| WO2006098082A1 | 2006-09-21 |
Hideo Shimizu
Yuichi Takagi
Yoshinao Nakano
Hideki Akiba
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