The invention discloses a wheel disc which comprises a first blade disc, a second blade disc, a third blade disc and a connecting part, a first mounting hole is formed in the first blade disc, a second mounting hole is formed in the second blade disc, a third mounting hole is formed in the third blade disc, and the connecting part comprises a connecting rod with a fixing cap at one end and a nut matched with the connecting rod for use. An external thread is arranged on the outer surface of the other end of the connecting rod, the connecting rod sequentially penetrates through the first mounting hole, the second mounting hole and the third mounting hole and is fixed by sleeving the nut on the external thread of the connecting rod, and a plurality of annularly arranged convex shoulders are arranged on the outer surface of the connecting rod between the nut and the fixing cap; the convex shoulder is in clearance fit with the mounting hole I and/or the mounting hole II; the convex shoulder is in clearance fit with the mounting hole III; the invention further discloses an engine comprising the wheel disc and a method for prolonging the fatigue life of the wheel disc. The technical problem that the fatigue life of an existing wheel disc is short due to the fact that the stress of bolt holes in the positions of the blade disc radial plates is large can be solved.
本发明公开了一种轮盘,包括叶片盘一、叶片盘二、叶片盘三和连接部,所述叶片盘一上设有安装孔一,叶片盘二设有安装孔二,叶片盘三设有安装孔三,连接部包括一端带有固定帽的连接杆和与连接杆配套使用的螺母,连接杆的另一端的外表面上设有外螺纹,连接杆依次穿过安装孔一、安装孔二和安装孔三并通过螺母套设在连接杆的外螺纹上进行固定,螺母与固定帽之间的连接杆的外表面上设有若干个环形设置的凸肩,凸肩与安装孔一和/或安装孔二间隙配合,凸肩与安装孔三间隙配合;本发明还公开了包括上述轮盘的发动机及一种提高轮盘疲劳寿命的方法。本发明可以解决现有的轮盘在叶片盘辐板处的螺栓孔的应力较大而导致的轮盘疲劳寿命较低的技术问题。
Wheel disc, engine and method for prolonging fatigue life of wheel disc
轮盘、发动机及提高轮盘疲劳寿命的方法
09.12.2022
Patent
Elektronische Ressource
Chinesisch
IPC: | B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT |
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