| 摘要 |
PURPOSE:To contrive easier fitting and detachment of an openable panel at the time of maintenance by fastening a support pin between a support frame of a panel frame and a fixed plate, providing a side face of the openable panel with a slot on one side and with an L-shaped notch having a closing position on the other side, and supporting the slot of the openable panel by the support pin. CONSTITUTION:A panel frame 22 is jointed to a lower surface of a ceiling 21. A U-shaped fixed plate 29 is attached to the outer surface of a side face 28 of a support frame 27 extended upward vertically from an opening part 26 of the ceiling. A support pin 30 is fastened between the side face 28 and the fixed plate 29, and a fixing pin 35 is attached to the side plate 28 by welding or the like. Each of both side plates 36 of an openable panel 25 is provided with a horizontally elongate slot 37 on one side and with an L-shaped notch 38 on the other side, the notch 38 having a closing position 39. In the condition where the panel 25 is supported, the L-shaped notch 38 is supported by the support pin 30, and the slot 37 is supported by the fixing pin 35. At the time of detaching the panel 25, the support pin 30 is disengaged from the slot 37 of the panel 37, and the panel 25 can be detached easily. Thus, the panel 25 can be detached and fitted speedily at the time of inspection or maintenance. |
