目前應用(yong)的錘(chui)片(pian)(pian)形狀(zhuang)很(hen)多(duo),如圖(tu)(tu)(tu)(tu)5-6,但使用(yong)廣泛的是(shi)板狀(zhuang)矩形錘(chui)片(pian)(pian)(圖(tu)(tu)(tu)(tu)5-6a),因它形狀(zhuang)簡單(dan),易(yi)制(zhi)造(zao)(zao),通用(yong)性(xing)好。它有兩(liang)個銷軸上(shang),其(qi)中(zhong)一(yi)(yi)孔(kong)串(chuan)在銷軸上(shang),可輪(lun)換(huan)使用(yong)四角(jiao)來工(gong)作(zuo)。圖(tu)(tu)(tu)(tu)5-6b、c、d為工(gong)作(zuo)邊(bian)涂(tu)焊(han)、堆焊(han)碳化鎢或焊(han)上(shang)一(yi)(yi)塊特殊的耐磨合(he)金,以延(yan)長(chang)(chang)使用(yong)壽命(ming),但制(zhi)造(zao)(zao)成(cheng)本較高。圖(tu)(tu)(tu)(tu)5-6e、f、g將(jiang)四角(jiao)作(zuo)成(cheng)梯形、棱(leng)角(jiao)和尖角(jiao),提(ti)高其(qi)對牧草纖維飼料的粉碎效果(guo),但耐磨性(xing)差。圖(tu)(tu)(tu)(tu)5-6h環形錘(chui)片(pian)(pian)只有一(yi)(yi)個銷孔(kong),工(gong)作(zuo)中(zhong)自動變換(huan)工(gong)作(zuo)角(jiao),因此磨損均勻(yun),使用(yong)壽命(ming)較長(chang)(chang),但結(jie)構復雜(za)。圖(tu)(tu)(tu)(tu)5-6i復合(he)鋼矩形錘(chui)片(pian)(pian)是(shi)由(you)軋(ya)鋼廠提(ti)供的兩(liang)表層硬(ying)度大中(zhong)間夾層韌性(xing)好的鋼板,造(zao)(zao)制(zhi)簡單(dan)、成(cheng)本低(di)。
試(shi)驗(yan)表(biao)明(ming),錘片長度適當,有(you)利(li)于提高度電產量(liang)(liang),但過長則金屬耗量(liang)(liang)增加,度電產量(liang)(liang)降低。另據中國(guo)農業機械(xie)化研(yan)究院(yuan)用(yong)1.6mm、3.0mm、5.0mm、6.25mm四(si)種(zhong)厚度錘片作玉米粉碎試(shi)驗(yan)得出,1.6mm比(bi)6.25mm錘片粉碎效果提高45%,比(bi)5mm提高25.4%。用(yong)薄錘片粉碎效率高,但使用(yong)壽命(ming)相對縮短。用(yong)多厚的錘片,應(ying)視粉碎對象和機型大小而異。