Sampling device for coal geological survey

A sampling device for coal geological exploration belongs to the technical field of geological exploration and comprises a placing plate, an outer tooth gear ring arranged above the placing plate in a matched mode, a control mechanism arranged on one side of the top end of the placing plate in a matched mode and used for controlling the outer tooth gear ring to rotate, a screw hole formed in the middle of the top end of the placing plate and an annular groove formed in the top end of the placing plate. After the feeding cylinder is taken out, soil drilled by the feeding cylinder still exists in a drill hole, the situation that in the prior art, soil is taken out, and then backfilling is conducted after collection is completed is not needed, time is saved, when sampling needs to be continued, the feeding cylinder does not need to be taken out, and only the collection mechanism needs to be controlled to move; the operation is convenient. 一种煤炭地质勘测用取样装置，属于地质勘探技术领域，包括放置板，放置板上方配合设有外齿齿圈，放置板顶端一侧配合设有控制机构，控制机构控制外齿齿圈转动，