| 摘要 |
PURPOSE:To enable a burying block to be easily carried without bulking and also it to withstand great loads by a method in which a branch line bar having a connecting ring on its upper end is fixed to a base plate, and resistor plates matching the regulating ribs of the base plate is provided. CONSTITUTION:A connecting ring 2 is formed on the upper end of a branch line bar 1, and a threaded portion 3 to be connected with a base plate 6 is formed on the lower end portion of the bar 1. Notches 5b matching a regulating rib 7 provided to the plate 6 are formed on both end edges of the central part of the side plate 5a of a resistor plate 5 having an inverted U-shaped groove. Plural resistor plates 5 are set in parallel on the base plate 6, and the bar 1 is thrust through the hole 13 and its threaded portion 3 is connected through the hole 9 of the base plate 6 with a nut 10. Necessary space prior to assembling can thus be greatly reduced, and the burying block can withstand great loads. |
