The invention discloses a room-changing belt-type binding
machine. The binding
machine consists of installation plates, a feed channel, a chain mechanism, a compressor and wheels, wherein the feed channel is arranged on the lower part in front of a space between the two installation plates and is connected with a
discharge hole of a harvester; the compressor is arranged in middle of the space between the installation plates; and the chain mechanism is arranged on the front parts of the outer side surfaces of the installation plates. When the room-changing belt-type binding
machine works, straws are primarily compressed, so that gaps among the stalks are fully reduced, part of gas is exhausted, the surfaces of fibers can be sufficiently contacted with one another, and the compression rate of the stalks can be improved since the fibers are staggered with one another in the compression process; and the stalks are secondarily compressed by a
rubbing and pressing forming manner with a high core forming rate, thereby guaranteeing the forming rate of bales. When the compressor is used for forming roll cores, a
hydraulic control mechanism implements force application in a
rubbing and pressing process, so that compressing force is large, the bales are stressed uniformly in the compression process, and the shapes of
hay cores and the formed bales are regular. The room-changing belt-type binding machine is simple in structure and low in cost, can achieve a high
binding efficiency, and can be widely applied to agricultural production.