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Maatregels by it kiezen fan in skyfkoppeling

It folgjende is eins in stekproef applikaasje makke gebrûk fan te yllustrearjen de konvinsjonele metoade foar picking in Disc coupling. Elke oerienkomst mei in oanwêzich bedriuw? De applikaasje is net opsetlik noch bedoeld om te lykjen op dat bedriuw? ¡¥s eigentlike applikaasje.
Foarbyldapplikaasje:
In organisaasje hat in kompressorapplikaasje dy't wurket mei in elektryske motor fan 225 pk dy't wurket by 1,150 RPM om in trije-silinder multi-stage reciprocating luchtkompressor te riden. De elektryske motor hat in 3-3/8 inch skacht mei in 7/8 inch keyway plus de kompressor hat in 92mm skacht troch it brûken fan in 25mm keyway. De skachtskieding is sawat sân inch oangeande skachteinen mei wat mooglikheid om it motorgebiet te feroarjen. De shafts hawwe in parallelle misalignment / offset fan likernôch 1/32 fan in inch.
Step 1: The primary phase is always Maatregels by it kiezen fan in skiifkoppelskiif%20koppelingom fêst te stellen hokker koppelingsstyl foar dizze applikaasje keazen wurde moat. Sûnt de SU Sort coupling allinnich stipet
in inkele flex plane, it kin allinnich plak foar hoeke en axial misalignment, mar net parallel misalignment. De folgjende kar kin wêze om te ferskinen by in SX- of DI-foarmkoppeling. De 6-bout SX Kind sil elke parallelle misalignment oanpasse, lykas de definieare skachtskieding. De grutte sil wierskynlik wurde fêststeld troch it assortimintkoppel plus de skaftdiameters.
Stage 2: Following, calculate the application torque and apply the service element to determine the choice torque.The formula employed to calculate torque is as follows:
Application Torque ( in¡§Clb ) = ( HP x 63025 )/RPM
or Nm = ( KW x 9550)/RPM
Ynstekke binnen de nûmers fan jo applikaasjebeskriuwing:
Application Torque ( in-lbs ) =(HP x 63025)/RPM = (225 x 63025)/1150 = twelve,331 in-lbs
Application Torque x Service Issue = Selection Torque
twelve,331 in-lbs x 3.0 = 36,993 in-lbs
Stage three: Make use of the SX coupling tables and note that the SX 202-6 is rated at 40,700 in-lbs, a lot more than adequate to handle the variety torque calculated in phase 2. The SX202-6, having said that, will not assistance the 92mm shaft dimension. The subsequent more substantial size coupling, the SX228-6, will assistance the 92mm shaft size plus the shaft separation dimension (BSE) is 6.88 inches, incredibly near to the application?¡¥s desired 7 inch separation. The SX228-6 is rated at 62,000 in-lbs which may appear to be extreme, on the other hand, the coupling dimension is important to deal with the bore size.
Stage 4: The SX228-6 coupling is rated to get a optimum unbalanced pace of three,400 RPM, a lot more than adequate to support the application pace of 1,150 RPM.
Phase five: To find out should the coupling will take care of the parallel misalignment, make use of the trig perform of tan 1?? = offset allowed for one inch = 0.0174
Fermannichfâldigje de 0.0174 x de ôfstân wêrby't skiifpakketten of ??S?¡¥ diminsje yn 'e tabel op side D-13, of fiif,50 inch.
De tastiene parallel offset is 0.0174 x 5.50 = 0.096 inches. De maksimale offset oan 'e applikaasje is 1/32 inch (0.031), as gefolch kin dizze koppeling de parallelle misalignment oanpasse.
Opmerking: It kin faaks advisearre wurde om te sykjen om de koppeling op likernôch 20% op 'e tastiene misalignment op te stellen. Foar dizze keppeling moat de ynstallearder wirklik sykje om superieur te berikken dan 0.020 parallelle misalignment op it momint fan ynstallaasje. Dit kin ynskeakelje de mear misalignment dy't sil barre omdat it einresultaat fan ark fêstigje en algemiene gear dress yn.

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