Device for sampling vertical suspended materials in river

The invention discloses a device for sampling vertical suspended materials in a river. The device is characterized by comprising a collection device and a placement device, wherein the collection device is a square container and comprises a left side plate, a right side plate, a bottom plate and a cover plate; a front opening and a back opening of the collection device are provided with water-proof plates capable of moving up and down; the placement device comprises a plurality of box bodies which are movably connected vertically for placement of the collection device, a drawing device, a top plate and a first connection device arranged on the top plate; each box body comprises a left side plate, a right side plate and a bottom plate; the height of each box body is greater than that of the collection device; the collection device is movably arranged on the bottom plates of the box bodies; the drawing device is connected with the waterproof plates; and a second connection device is arranged at the top of the d