| 摘要 |
1521705 Pivots CATERPILLAR TRACTOR CO 24 Sept 1975 [22 Nov 1974] 39151/75 Heading E2F [Also in Division F2] A bearing assembly for securing a pivotable element 12 to a supporting element 14 comprises a trunnion shaft 17 adapted for attachment to said element 14 at one end and having an annular shoulder 24 facing the other end, a sleeve 27 disposed coaxially on said shaft in abutment with said shoulder, said sleeve having an outer surface 28 of spherical configuration, a pair of bearing cap members 29, 30 secured together by releasable means and having inner surfaces 32, 33 which conform to said surface 28, one of said members 29 being attached to said element 12, a circular retainer 38 disposed against said other end of said shaft in coaxial relationship therewith and being of greater diameter than said other end in order to hold said sleeve thereon, and disengageable fastener means 39 to hold said retainer on said shaft. The member 29 may be secured to the element 12 by welding. The sleeve 27 may be a shrink fit on the shaft and may have different metallurgical characteristics therefrom, e.g. the sleeve may be harder. The assembly may be used to couple the push arm of a bulldozer attachment to the side of a tractor. |
