| 摘要 |
<p>PURPOSE:To improve the handling efficiency and the maintainability by moving a front hood frame without a rod. CONSTITUTION:A front hood frame 2 is provided with narrow side plates 30, which are extended to the side of a rear hood frame 3, in both sides of a substrate 29 where an angular hole is formed, and guide grooves 32 consisting of long holes which are parallel with the substrate 29 and are extended vertically are formed on side plates 30. Through holes 39 are provided in lower parts of side plates 30 on center lines of guide grooves 32. Guide grooves 25 and 32 make substrates 22 and 29 parallel with each other and align a ring part 21 and the angular hole to arrange front and rear hood frames 2 and 3 in parallel with each other, and guide grooves 25 and 32 are at right angles to the axis connecting centers, and through holes 26 and 39 have the same height.</p> |
