The invention discloses a bent pull rod, which comprises a straight rod part and a bent rod part. The straight rod part is fixedly connected with the bent rod part; the bent rod part and the straight rod part connected with the bent rod part are positioned in a first plane; the bent rod part is an oval rod, and the long axis of the section of the oval rod is located in the first plane. According to the invention, the bent rod part of the bent pull rod is made into the ellipse of which the long axis of the cross section is positioned in the first plane, so that the force of the pull rod in the pulling and pressing process is uniformly distributed on the whole bent rod part, and atoms with strong combination orbit change are not concentrated in a certain small area any more, so that obvious stress concentration points are eliminated; therefore, the bent pull rod can bear pulling and pressing for more times without generating metal fatigue, the service life of the bent pull rod is greatly prolonged, and the bent pull rod can be bent for more than one million times when being applied to the field of automobiles.
本发明公开了一种弯曲拉杆,包括直杆部及弯杆部;所述直杆部与所述弯杆部固定连接;所述弯杆部及与所述弯杆部相连的直杆部位于第一平面内;所述弯杆部为椭圆杆,所述椭圆杆截面的长轴位于所述第一平面内。本发明通过将所述弯曲拉杆的弯杆部制成截面的长轴位于所述第一平面内的椭圆,使拉杆在拉、压过程中的力均匀分布在整段弯杆部,也即使得发生强结合轨道变化的原子不再集中于某一小区域,消除了明显的应力集中点,从而使弯曲拉杆能承受住更多次的拉、压而不产生金属疲劳,大大提升了弯曲拉杆的使用寿命,应用在汽车领域可使弯曲拉杆的寿命超过100万次弯折。
Bent pull rod, manufacturing method thereof and automobile chassis
一种弯曲拉杆及其制作方法、一种汽车底盘
2021-07-13
Patent
Electronic Resource
Chinese
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