Abstract
Mechanical analysis of scissor transmission mechanism has been of concern for researchers. Analysis methods of kinematic pair frictions effect on efficiency and mechanical properties have been a difficult problem. To solve the problem, a mechanical model has been established for the research on the scissor transmission mechanism considering connecting points kinematic pairfriction. Forcesofnodes of multi-unit transmission mechanism, on the basis of principle of virtual work, were expressed in terms of therecursive matrix. The method used to calculate the efficiency of multi-unittransmission mechanism has been obtained. Analysis on friction factors, including the total number of units, situation of hydraulic cylinder and the eccentric coefficient was carried out with real mechanism and their relationships with efficiency have been expressed by curves. The results indicated that the efficiency decreased with the increase of unit number and the eccentric coefficient. The conclusions obtained could serve as theoretical guidance and reference for mechanical analysis and optimal design on scissor transmission mechanism.
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