Experimental teaching aid for epicyclic gear train
A kind of technology of turnover wheel system and teaching aids, applied in the field of teaching tools, can solve problems such as difficulty for students to fully understand
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Embodiment 1
[0038] figure 1 It is a structural schematic diagram of the epicyclic train experimental teaching aid in Embodiment 1 and Embodiment 2 when the epicyclic train is a minus sign mechanism.
[0039] figure 2 It is a structural schematic diagram of the epicyclic gear train experimental teaching aid in Embodiment 1 and Embodiment 2 when the epicyclic gear train is the first positive sign mechanism.
[0040] image 3 It is a structural schematic diagram of the epicyclic gear train experimental teaching aid in Embodiment 1 and Embodiment 2 when the epicyclic gear train is the second positive sign mechanism.
[0041] Such as figure 1 , figure 2 with image 3 As shown, the epicyclic train experimental teaching aid 50 has an epicyclic train, an input unit, and a data acquisition and display unit.
[0042] Epicyclic gear train comprises: large sun gear 1, first small sun gear 22, second small sun gear 20, third small sun gear 7, first planetary gear 2, second planetary gear 3, th...
Embodiment 2
[0061] When the large sun gear 1, the first small sun gear 22 and the first planetary gear 2 are in the meshing state in the epicyclic gear train experimental teaching aid 50 in Embodiment 1, the epicyclic gear train is a negative sign mechanism, and it is a 2k-H type Epicyclic gear train, then the calculation formula of the transmission ratio of the epicyclic gear train should be: i 122 H =(n 22 -n H ) / (n 1 -n H )=(-1) 1 Z 1 / Z 2 ;
[0062] converted into (n 22 / n H -1) / (n 1 / n H -1)=(-1) 1 Z 1 / Z 2 ;
[0063] Let X=n 22 / n H ,Y=n 1 / n H ;
[0064] Get (X-1) / (Y-1)=-Z 1 / Z 2 .
[0065] Among them, n 22 is the rotational speed of the first small sun gear 22, n 1 is the rotational speed of the big sun gear 1, n H is the rotational speed of the second flange 5; then X is the rotational speed ratio between the first small sun gear 22 and the second flange 5, and Y is the rotational speed ratio between the large sun gear 1 and the second flange 5. Z 1 ...
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