| 摘要 |
329,744. Karlovitz, L. March 15, 1929. Driving-gear of crank type. - Transmission gearing for electric locomotives &c. allowing relative displacement of parallel driving and driven shafts due to spring of the frame &c. comprises a pair of cranks at 180‹ on each shaft, cross-connected diagonally by transmission systems which are connected to an otherwise free shaft located at the intersection of the diagonals whereby completely constrained motion is obtained. In one form, Fig. 1, cranks 12, 15 are connected by a linkage system 17, 18, 20, 21 whilst diametrically opposite cranks 11, 13 and 14, 16 are connected by similar linkage systems, the tie links 20, 21 &c. being freely mounted on a common floating shaft 0 the position of which coincides with the intersection of the diagonals between the cranks. The shafts M, F rotate in the same direction. In a modification, Fig. 3, the crank pins carry blocks 35, 36 slidable in rocking guides 38, the two systems being pivotally connected by a pin or shaft located at the axis O. In this form complete constraint is obtained by hydraulic interconnecting means between the slide blocks 35, 36, comprising a closed cylinder 41 in which work a pair of eccentric pistons 49, 42 of equal displacements, the central piston 49 being connected by a rod 33 to the slide block 35 and the annular piston 42 by a rod 34 to the block 36. Packing rings being provided and there being no passage for the fluid 50, 51, displacement of either piston in one direction produces equal displacement of the other piston in the opposite direction, the motion of one crank being thus transmitted to the other, accompanied by rocking motion of the slide frame about the vertical axis O. The arrangements may be multiplied as between the same shafts or for connecting up a number of parallel shafts in lazytong fashion. |
