| 摘要 |
<p>According to an aspect of the present disclosure, a boom apparatus comprises a clevis pin, a first boom, and a second boom. The first boom and the second boom are attached pivotally to one another at a knuckle of the boom apparatus by use of the clevis pin. The first boom comprises a first side wall, a second side wall spaced apart from the first side wall laterally of the first boom, a top wall, a bottom wall spaced apart from the top wall, and a monolithic knuckle body. The top wall and the bottom wall interconnect the first side wall and the second side wall.</p> |
