《改装成大滚筒的联合收割机》(见本刊1975年第4期)发表后,一些单位反映,按原文图5做的凹板架,装不下四块凹板(即原三块凹板上再增加一块第三凹板)即使把图中的梳齿紧固架前移,免强装上四块凹板,在收割机工作时,发动机负荷很重,小麦籽粒破粹严重,茎秆打得较碎,分离及清选损失大,因而失去了改装大滚筒的优越性。 After the publication of the Combine Harvester Retrofitted into a Large Roller (No. 4, 1975), some units reported that the intaglio plate, as shown in original image 5, could not hold four intaglio plates (that is, the original three intaglio plates And then add a third concave plate) Even if the figure of the comb tooth rack forward, avoid strong mounted on the four concave plate, the harvester work, the engine load is heavy, severe grain of wheat shelling, stem Playing more broken, separation and loss of large election, which lost the advantages of modified large drum.