| 摘要 |
FIELD: transport.SUBSTANCE: invention relates to railway transport, particularly, to self-dumping boxcars. Boxcar top frame 1 is made of one sheet with hardness and stiffness selected with due allowance for dynamic and static loads originating in operation. Said sheet rests at edges on lengthwise rails 3 and brackets 4 binding lengthwise rails with the sheet with body run axles fitted therein. Sheet mid part rests on resilient elements 9 secured at center sill over its entire length.EFFECT: decreased car weight, easier unloading cargoes frozen to car bottom.1 dwg |
