LAYING AND LEVELING EQUIPMENT FOR TRENCH EXCAVATION

PROBLEM TO BE SOLVED: To form a laid and leveled floor easily, quickly and automatically in pipe embedding work or the like. SOLUTION: A main body box 4 is towed by a trencher 3. An almost square cylindrical shape having a width corresponding to the trench width of the excavated trench 11 is formed and supported in a movable manner on the excavated trench bottom 111 by means of a sleigh-shaped leg portion 8. A receiving hole 5 for crushed stone S is formed by an upper wall 41, a hopper-shaped crushed stone housing portion is formed by the front and rear sloped walls 43, 45 and both side walls 44, and a discharge outlet 7 opened to an upper position by the thickness of laid and leveled floor 12 from the sleigh-shaped leg portion 8 is formed. At the rear side position of the discharge hole, a rolling tamper 9 is arranged. The thickness of laid and leveled floor can be changed and adjusted by adjusting the up-down position of the discharge gate 51. In addition, the up-down position of the rolling tamper 9 is also changed. Together with the advance of the trencher 3, the main body box 4 also advances, and the crushed stones are gradually discharged while advancing and laid and leveled thereby forming the laid and leveled floor.