| 摘要 |
A load carrying structure (10) is, for example, the stick (12) of an excavator or another work element having at least three load input locations (70, 72, 74). In operating the excavator, for example, failure of the stick can occur owing to side, torsional, bending and columnar loading through bucket (16), boom (14), and control element connections (18, 20, 76) at associated load input locations. A method for making the structure (10) includes connecting top and bottom plates (22, 24) and side plates (30, 32) which extend outwardly to define respective load input locations (70, 74) Other load input locations (72, 74, 144) are on a box structure (82) formed with the side and top and bottom plates (30, 32; 22, 24) The structure (10) has a more uniform construction, particularly without weld discontinuities, and resists input forces more effectively owing to the relationship of the load input locations to substantially overcome failures associated with such structures. |
