收割机的滚筒是与装在它下面的凹齿板协同进行工作的。在滚筒和凹齿板上分别装有许多钉齿(图1),滚筒转动时,两者上面的钉齿产生相对运动,从而对谷内进行粉碎脱粒。为了避免钉齿工作时相碰,其位置必须安装正确。 The drum of the harvester works in conjunction with a gear plate mounted underneath it. In the roller and the concave plate are equipped with a number of spikes (Figure 1), the drum rotation, the two above the relative movement of the teeth, so as to pulverize the threshing inside the valley. In order to avoid touching the nail work, its location must be installed correctly.