Metering box convenient to adjust and fix

The utility model discloses a metering box convenient to adjust and fix, and belongs to the technical field of metering boxes, the metering box specifically comprises a box body and a placing frame, two sides in the box body are fixedly provided with fixing rods, a sealing mechanism used for blocking the bottom of a sliding groove is arranged below the fixing rods, U-shaped clamping pieces are slidably clamped on the fixing rods, and the U-shaped clamping pieces are arranged on the placing frame. The opposite sides of the two ends of the U-shaped clamping piece are rotationally connected with limiting wheels through bearing seats, a mounting plate is fixedly arranged below the U-shaped clamping piece, and a locking assembly is arranged on the mounting plate; through the sealing mechanism, the U-shaped clamping pieces can be conveniently installed or taken down from the bottom of the fixing rod, and the number of the placing frames is controlled by controlling the number of the U-shaped clamping pieces, so tha