The present invention hardly height and weight of the removable container can be mounted on the frame of the vehicle is limited, the structure is simple and inexpensive, the load cell unit arm roll vehicles that can weigh the load of the container easily and quickly I provide. A load cell unit 10, two or more pairs on the upper surface 3a of the pair of left and right chassis frame 3 a pair as a set are arranged, a pair of washers 11 before and after fixed spaced in the longitudinal direction, a pair of washers the fixed across the upper surface and the load cell 12 of rectangular shape along the longitudinal direction of the frame, the bottom side of the concave portion 13 formed on the upper surface 12a of the load cell is fixedly inserted, and the upper surface 15a is the upper surface of the load cell It also includes a support plate 15 located above. Since load cells across the washer is fixed, the amount of deflection due to a vertical load, can be reliably measured by the strain gauges 18 attached to the load cell. .BACKGROUND 2
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