Pull-type twin-row potato harvester

The utility model relates to a pull-type twin-row potato harvester which comprises a rack, a transmission mechanism, a combined digging mechanism, a sectionalized conveying device and land wheels. The combined digging mechanism is fixedly connected with the forefront end of the rack, and comprises a digging machine frame, a press depth roller mechanism, a cutting disc mechanism, and a digging shovel mechanism. The sectionalized conveying device comprises a front conveying chain, a front drive shaft mechanism, a rear conveying chain, and a rear drive shaft mechanism, the front drive shaft mechanism and the rear drive shaft mechanism are both provided with a cinquefoil gear, and the cinquefoil gears are close to the conveying chains. A hitch frame is fixedly connected with the forefront end of the rack, the rear end of the hitch frame is connected with the rack in a hung mode, and the front end of the hitch frame is connected with a three-link hitch of a tractor through a three-link hitch. The transmission mechanism is fixedly connected on the rack, and comprises a transmission shaft group and a speed changing box. The transmission mechanism transmits driving force to the sectionalized conveying device through a chain and a chain wheel. The rearmost end of the rack is fixedly connected with a potato collecting barrier strip which is arranged at the rear end of the rear conveying chain.