Muaj peb hom kev tsav tsheb: txoj siv tiaj tiaj, daim duab peb sab siv thiab synchronous toothed siv. Tag nrho peb yam ntawm txoj siv sia muaj cov qauv hauv tebchaws. Txawm li cas los xij, vim muaj kev hloov pauv loj hauv kev sib kis thiab lub zog, tsis muaj qhov sib thooj ntawm lub teb chaws tus qauv lossis lub teb chaws tus qauv, uas tsis tuaj yeem npog tag nrho cov ntsiab lus, tab sis lub teb chaws tus qauv txiav txim siab txog kev xaiv, siv cov xwm txheej, tsim qauv thiab lwm yam ntsiab lus.
For example, the national standard stipulates that there are seven types of V-belts: O, a, B, C, D, e and F, and the corresponding pulley groove angles are 34 °, 36 ° and 38 °. At the same time, it specifies the minimum diameter of the small pulley corresponding to each pulley groove angle of each type of V-belt, but the large pulley is not specified. The groove angle of the pulley is divided into 34 degrees, 36 degrees and 38 degrees. The specific selection shall be based on the groove type and reference diameter of the pulley; The groove angle of the belt pulley is related to the diameter of the belt pulley. The recommended groove angle degrees of the groove angle of different types of belt pulley in different diameter ranges are as follows: the O-type belt pulley is 34 degrees when the diameter range of the belt pulley is 50mm ~ 71mm; 36 degrees at 71mm ~ 90mm and 38 degrees at > 90mm; Type a pulley is 34 degrees when the pulley diameter ranges from 71mm to 100mm and 36 degrees when the pulley diameter ranges from 100mm to 125mm; > 38 ° at 125mm; B-type pulley is 34 degrees when the pulley diameter ranges from 125mm to 160mm; 36 degrees for 160mm ~ 200mm and 38 degrees for > 200mm; C-type pulley is 34 degrees when the pulley diameter ranges from 200mm to 250mm, 36 degrees when 250mm to 315mm, and 38 degrees when > 315mm; When the diameter range of D-type pulley is 355mm ~ 450mm, it is 36 degrees, and when the diameter range is > 450mm, it is 38 degrees; Type E is 36 degrees when it is 500mm ~ 630mm and 38 degrees when it is >6 30mm.
Cov qauv ntawm V-siv muaj xws li: zoo tib yam oa BCDE 3V 5V 8V, zoo tib yam reinforced ax BX CX DX ex 3vx 5vx 8vx, nqaim V- siv SPZ spa SPB SPC, muaj zog nqaim V{{8} } siv XPA XPB XPC; Txhua tus qauv ntawm txoj siv tawv triangular qhia txog qhov loj ntawm txoj siv triangular. Qhov luaj li cas ntawm hom daim duab peb sab yog: sab saum toj dav yog 13 hli thiab thickness yog 8 hli; Qhov luaj li cas ntawm B- hom daim duab peb sab siv yog: sab saum toj dav yog 17 hli thiab thickness yog 10.5 hli; Qhov luaj li cas ntawm C- zoo li daim duab peb sab siv yog: sab saum toj dav yog 22 hli thiab thickness yog 13.5 hli; Qhov luaj li cas ntawm D-zoo li tus daim duab peb sab siv yog: sab saum toj dav yog 21.5 hli thiab lub thickness yog 19 hli; Qhov luaj li cas ntawm E-zoo li tus daim duab peb sab siv yog: sab saum toj dav yog 38mm thiab thickness yog 25.5mm. Qhov loj me (dav qhov siab): O (10 6), a (12.5 9), B (16.5 11), C (22 14), D (21.5 19), e (38 25.5).
Txoj kab uas hla thiab lwm qhov ntev ntawm lub pulley yog sib npaug raws li qhov txo qis thiab tsim raws li kev ua haujlwm ceev thiab ceev ntawm lub cev muaj zog. Ua hauj lwm ceev / lub cev muaj zog ceev {{0}} driven pulley txoj kab uas hla / tsav pulley txoj kab uas hla 0.98 (sliding coefficient). Yog tias siv cov hlau rub, lub linear ceev yuav tsum tsis txhob siab tshaj 40m / s. yog siv cam khwb cia hlau pulley, linear ceev yuav tsum tsis txhob siab tshaj 35m / s. Qhov sib piv ntawm lub cev muaj zog ceev thiab txoj kab uas hla, qhov sib piv ceev=tso zis ceev: input ceev=load pulley pitch txoj kab uas hla: lub cev muaj zog pulley pitch txoj kab uas hla. Lub suab diam yog tib yam li qhov siv txoj kab uas hla. Txoj kab uas hla - 2H=pitch txoj kab uas hla, h yog qhov zawj qhov tob ntawm kab siv, thiab H sib txawv rau cov qauv sib txawv ntawm V-siv. YZ ib BCDE, qhov tob tob ntawm kab siv yog h=1.6 2.75 3.5 4.8 8.1 9.6 raws. Pulley pitch txoj kab uas hla yog lub theoretical txoj kab uas hla ntawm pulley pitch kab txoj hauj lwm, uas yog ib tug me ntsis zoo li lub indexing lub voj voog txoj kab uas hla ntawm iav Nws yog feem ntau qhia los ntawm PD, thiab lub voj voog sab nrauv yog feem ntau qhia los ntawm OD Cov qauv hloov dua siab tshiab ntawm lub voj voog thiab lub voj voog sab nrauv ntawm sib txawv groove hom yog txawv. Feem ntau, peb tuaj yeem ntsuas lub voj voog sab nraud ntawm lub pulley thiab xam lub suab lub voj voog raws li cov qauv SPZ:OD=PD ntxiv rau 4; SPA:OD=PD ntxiv 5.5; SPB:OD=PD plus 7; SPC:OD=PD ntxiv rau 9.6. Qhov tsawg kawg nkaus txoj kab uas hla ntawm lub pulley ntawm ib tug los yog spa yog 80mm. Yog tias nws tsawg dua qhov loj me no, tshwj xeeb tshaj yog nyob rau hauv kev kub ceev, txoj siv tawv yuav ua rau delamination thiab tawg hauv qab. SPZ siv, lub log me me tsis pub tsawg dua 63 hli. Nyob rau tib lub sijhawm, xyuam xim rau txoj kev teeb tsa thiab kev nruj ntawm txoj siv. Yog tias nws me dhau, nws yooj yim plam, thiab yog tias nws loj dhau, nws yooj yim rau kev puas tsuaj rau txoj siv thiab cov kabmob.
Tsis tas li ntawd, ISO 1081-1995, tus qauv zoo ib yam li lub teb chaws tus qauv, qhia txog kev xaiv thiab tsim tshwj xeeb ntawm kev tsav tsheb, daim duab peb sab, daim duab peb sab Ribbed siv thiab grooved pulley. Muaj tsib hom kev rub: SPZ, spa, SPB, SPC thiab SPD.
