Distribution box convenient to maintain

The utility model relates to the technical field of power distribution boxes, and discloses a power distribution box convenient to maintain, which comprises a box body, a mounting plate is arranged in the box body, four rotating columns are rotatably connected in the box body, limiting blocks are fixedly connected to the outer sides of the rotating columns, two mounting blocks are fixedly connected in the box body, and the two mounting blocks are fixedly connected to the inner side of the box body. A sliding groove is formed in the mounting block, two clamping holes are formed in the inner side of the sliding groove, an assembling block is slidably connected to the interior of the sliding groove, two locking blocks are slidably connected to the interior of the assembling block, a sliding plate is fixedly connected to one end of each locking block, and two springs are fixedly connected to the inner wall of the assembling block. According to the utility model, by pressing the slide bar, the fixation of the moun