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in of So to to it is of of of of a a we in of a a an is a in an is to an a a a is is an to of a it is to at by in an as a of of to it in in is a of of in of to be as as as a of on in an a in in By of it is in a to at in to be as of by of of of PM or of is by of To PM or is by of on on of of is by of a In or a of a is in by PM or to a of so of by or to be of of It is to be or is of of of is to is to of Of a he/as of or of to be of of is to in of to As to is of of So it is to of to in be of of is be by by in at in to of be be at or is is 4 8 ,of in a in by of is it be of or is of of is 5 m/s, we as of is 5 0 m/s, we is 5 5 , we or we to as is be in or is by on an in of of is in be is is as we of we of of is In to we to it =25— 45m/應(yīng)采用球墨鑄鐵、鑄鋼或鍛鋼，也可采用鋼板沖壓后焊接帶輪。 小功率傳動(dòng)時(shí)，帶輪可以采用鑄鋁或塑料等材料。帶輪由輪緣、腹板和輪轂三部分組成。 市場上帶輪的槽寬是變化不定的，帶輪的有效直徑也 是 變化 不定的，因此，傳動(dòng)比的合理改變得到了保證。通常，小帶輪用作主動(dòng)輪，大帶輪被用作從動(dòng)輪。 了解了帶傳動(dòng)的一般結(jié)構(gòu)之后，還要對帶傳動(dòng)進(jìn)行受力分析，其中主要是帶的受力分析，帶的受力主要是拉力和應(yīng)力兩種，其中應(yīng)力又可以分為拉應(yīng)力、彎曲應(yīng)力和離心應(yīng)力。在設(shè)計(jì)時(shí)，應(yīng)當(dāng)使拉力和應(yīng)力之和均小于帶的極限值。為了避免帶出現(xiàn)打滑現(xiàn)象 ，還 應(yīng)當(dāng)使帶傳動(dòng)所傳遞的功率、帶的有效拉力和帶速三者之間滿足一定的關(guān)系，即 p<=傳動(dòng)的設(shè)計(jì)準(zhǔn)則一定要得到滿足，即在傳遞功率時(shí)不打滑，同時(shí)具有足夠的疲勞強(qiáng)度和一定的壽命。