| 摘要 |
<p>992,107. Differential gear; toothed gearing. CATERPILLAR TRACTOR CO. March 20, 1964 [April 1, 1963], No. 11848/64. Drawings to Specification. Headings F2D and F2Q. A limited slip differential gear for motor vehicles comprises an input carrier mounting sets of three intermeshed helically-toothed pinions arranged radially with the outer pinions of each set meshing helicallytoothed face gears splined for axial movement upon half-shafts and biased inwards towards the pinions for tooth loading by stacks of Belleville springs within the differential casing. Should one or other of the half-shafts spin, as with vehicle road wheel slip, the friction between the teeth of the outer pinions and the teeth of the face gears opposes relative movement between the gear parts. If the torque transmitted is sufficient, either one or both of the facially - toothed gears is forced back, collapsing its stack of Belleville springs into friction driving engagement. The flank angles of the teeth upon the gears and pinions are steeper on one side of each tooth than the other, Fig. 3 (not shown), so that in operation with a spinning half-shaft, increasing the torque transmitted always collapses one stack of Belleville springs before both are collapsed.</p> |
