Gate-type train sampling machine

The utility model discloses a door type train sampling machine which comprises a support, a sliding trolley is installed on the support, and a spiral sampler is installed on the sliding trolley. A first feeder is installed in cooperation with the spiral sampler, a pulverizer is installed below the first feeder, a divider is installed below the pulverizer, and a second feeder is installed in cooperation with the divider; a sample collector is mounted below the divider, an excess material collecting hopper is mounted at the feeding tail end of the second feeder, the crusher comprises a crushing shell, and a cylindrical filter screen cover is mounted in the crushing shell; the filter screen cover comprises a fixed screen cover and a movable screen cover which are mutually coupled; two rotating shafts which are arranged in parallel are mounted in the filter screen cover, and crushing rollers are fixed on the rotating shafts; one rotating shaft is connected with an outer gear and a rotating device; and the outer g