子午线轮胎原理 更新时间: 2020-10-25

子午线轮胎(radial tire)的国际代号是“R”, 俗称为“钢丝轮胎”。


子午线轮胎胎体的帘线排列不同于斜交轮胎 ,子午线轮胎的帘线不是相互交叉排列的,而是与外胎断面接近平行,像地球子午线排列,帘线角度小,一般为0°,胎体帘线之间没有维系交点,当轮胎在行驶过程中,冠部周围应力增大,会造成周向伸张,胎体成辐射状裂口。因此子午线轮胎的缓冲层采用接近周向排列的打交道帘线层,与胎体帘线角度成90°相交,一般为70°到78°,形成一条几乎不能伸张的刚性环形带,把整个轮胎固定,限制轮胎的周向变形,这个缓冲层承受整个轮胎60%到70%的内应力,成为子午线轮胎的主要受力部件,故称之为子午线轮胎的带束层。斜交胎的主要受力部件不在缓冲层上,其80%到90%的内应力均由胎体的帘布层承担。由此可见,子午线轮胎带束层设计很重要,必须具有良好的刚性,可采用多层大角度,高强度而且不易拉伸的纤维材料,如钢丝或者玻璃纤维等。

radial tire cord arrangement is different from the tire, radial tire cord is not mutually staggered, but with the tire section close to parallel, like the earth's meridian arrangement, cord angle is small, usually 0 degrees, not to maintain the intersection between the carcass cords, when the tire in the running process, the crown the surrounding stress increases, will cause the circumferential stretch, carcass radial gap. Close to the circumferential direction dealing with cord layer so the buffer layer of radial tire, 90 degrees intersect with the cord angle, generally 70 to 78 degrees, forming a rigid ring with hardly done, the whole tire fixed, tire circumferential deformation, the stress buffer 60% to 70% layer under the entire tire, become the main force components of radial tire, called radial tire belt. The main components of the diagonal tire are not on the buffer layer, and the internal stress of 80% to 90% is borne by the carcass ply. It can be seen that the design of the radial tire belt is very important, and it must have good rigidity. It can be made of the fiber material with large angle, high strength and not easy to stretch.

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