Patent ID: 8469211
Filing Date: 2013-06-25
Classification: B61G

Abstract:
1. A lower lockpin rotation shaft assembly comprising: a lower lockpin rotation shaft body, an outer end portion thereof having a first coupler lifting bar hole, and an intermediate portion thereof having a connecting key, wherein the lower lockpin rotation shaft assembly further comprises a lower lockpin rotation shaft bush, an outer end portion of the lower lockpin rotation shaft bush has a second coupler lifting bar hole, and an inner end portion of the lower lockpin rotation shaft bush is operatively connected to an inner end portion of the lower lockpin rotation shaft body; and the inner end portion of the lower lockpin rotation shaft body has a first radial through hole, the inner end portion of the lower lockpin rotation shaft bush has a second radial through hole, and after the inner end portion of the lower lockpin rotation shaft bush is capped on the inner end portion of the lower lockpin rotation shaft body, central lines of the first radial through hole and the second radial through hole coincide with each other, further comprising a rivet or threaded fastener that is provided in the through holes such that the lower lockpin rotation shaft body is fixedly connected to the lower lockpin rotation shaft bush.