The utility model discloses a tongue for elevating conveyor on edge is gone up with activity to activity medium plate, compared with the prior art, the activity medium plate can be dismantled with two risers and be connected in the middle of locating two risers, along being two, lie in the top of movable medium plate in the activity, can dismantle with two risers respectively and be connected. When the medium plate on or when the circumstances such as fracture or damage takes place along, change the fracture alone or the parts that damage can, need not overall change.