Distribution box mounting rack

The invention provides a distribution box mounting rack which comprises a box body with an open front side, two guide columns arranged in parallel are fixedly connected in the box body, a rotatable transmission rod is arranged in one guide column in a penetrating mode, a sliding groove extending in a spiral mode is formed in the circumferential surface of the transmission rod, the end of the transmission rod is meshed with a screw arranged in the box body, and the end of the transmission rod is meshed with the screw arranged in the box body. The guide columns are sleeved with sliding sleeves in a sliding mode, a supporting rod is arranged between every two corresponding sliding sleeves, the supporting rods are fixedly connected with a protective curtain hung on the top of the box body, and bolts with the inner ends clamped with the sliding grooves in a sliding mode are screwed on the sliding sleeves. By optimizing and improving an existing mounting frame, the baffle matched with the protective curtain is addi