轮胎的带束层由钢丝帘线与对应胶料压延覆胶而成,它存在于胎面和胎体之间,是半钢子午线轮胎的特有结构。作为轮胎的主要受力部位,承担约60%~75%的轮胎应力,起到固定胎体及增大胎面的刚性,缓冲外部冲击维持胎面的接触面,提高行驶稳定性的作用。半钢子午线轮胎一般由2~3层带束层组成,角度为20°~30°,安全系数一般大于10。 The belt of the tire is made of the steel cord and the corresponding rubber compound, which exists between the tread and the carcass, and is a unique structure of the semi-steel radial tire. As the main force of the tire, it takes about 60% -75% of the tire stress, plays the role of fixing the carcass and increasing the rigidity of the tread, cushioning the contact surface of the tread by the external impact, and improving the running stability. Semi-steel radial tire is generally composed of 2 to 3 layers of belt, the angle of 20 ° ~ 30 °, the safety factor is generally greater than 10.