活(huo)(huo)塞(sai)桿,包(bao)括活(huo)(huo)塞(sai)桿本(ben)(ben)(ben)(ben)(ben)體(ti)、活(huo)(huo)塞(sai)芯桿以及連接螺(luo)桿,活(huo)(huo)塞(sai)桿本(ben)(ben)(ben)(ben)(ben)體(ti)為(wei)中空的圓柱結構。本(ben)(ben)(ben)(ben)(ben)實用(yong)(yong)新型(xing)具有結構簡(jian)單(dan)、重(zhong)(zhong)量(liang)(liang)輕(qing)、制(zhi)作成(cheng)本(ben)(ben)(ben)(ben)(ben)低、實用(yong)(yong)性強、使(shi)(shi)用(yong)(yong)壽命(ming)長等優(you)點。活(huo)(huo)塞(sai)桿設置為(wei)空心(xin)結構,不(bu)僅減(jian)少了(le)材料用(yong)(yong)量(liang)(liang),從(cong)而大大減(jian)少了(le)制(zhi)作成(cheng)本(ben)(ben)(ben)(ben)(ben),同(tong)時活(huo)(huo)塞(sai)桿的重(zhong)(zhong)量(liang)(liang)也大幅度減(jian)輕(qing),使(shi)(shi)活(huo)(huo)塞(sai)桿在運動過程(cheng)中的慣性減(jian)小(xiao),從(cong)而活(huo)(huo)塞(sai)桿與油封的摩(mo)(mo)擦(ca)減(jian)弱,延(yan)長了(le)活(huo)(huo)塞(sai)桿的使(shi)(shi)用(yong)(yong)壽命(ming)。雖然活(huo)(huo)塞(sai)桿的重(zhong)(zhong)量(liang)(liang)減(jian)輕(qing),材料變少,但同(tong)樣能(neng)(neng)保證較強的剛性。另外(wai),摩(mo)(mo)擦(ca)壓(ya)力焊(han)(han)接方式(shi)(shi)是(shi)利用(yong)(yong)摩(mo)(mo)擦(ca)力產生(sheng)熱量(liang)(liang)從(cong)而產生(sheng)焊(han)(han)縫。這(zhe)種焊(han)(han)接方式(shi)(shi)能(neng)(neng)夠使(shi)(shi)活(huo)(huo)塞(sai)芯桿、連接螺(luo)桿與活(huo)(huo)塞(sai)桿本(ben)(ben)(ben)(ben)(ben)體(ti)的連接滿足(zu)活(huo)(huo)塞(sai)桿強度的要求。