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指出了标准规定的螺栓联接扭紧力矩值不尽合理的问题 ,并从联合收割机上脱粒滚筒与纹杆间螺栓联接的受力分析和失效分析出发 ,提出了正确的设计计算方法。指出螺栓联接的扭紧力矩值不仅与螺栓的公称直径及性能等级有关 ,还与能否保证联接可靠工作有关。脱粒滚筒与纹杆间螺栓联接的扭紧力矩值应按保证工作时滚筒与纹杆间不发生滑移来确定。
It points out that the value of the bolt tightening torque in the standard is not reasonable. Based on the stress analysis and the failure analysis of the bolt connection between the threshing roller and the shank on the combine harvester, the correct design and calculation method is put forward. It is pointed out that the tightening torque of bolt connection is not only related to the nominal diameter and performance grade of bolts, but also to whether it can ensure the reliable work of connection. Tightening torque between the threshing cylinder and the shank bolt connection torque value should ensure that work does not occur between the roller and the lever rod slippage to determine.