论文部分内容阅读
索道承载索的拉力,在很大程度上受中央挠度系数S的大小左右。S偏小,容易产生超拉力;S偏大,又增大了冲击应力和弯曲应力,还可能使木捆碰地影响运行。挠度系数是影响承载索发生破断事故的最大原因。因此,承载索松紧度的测定,不仅在架设时需要,而且在索道的经常维护中也必不可少。近来,由于在承载索上常设有防止承重后下垂的装置等,故不能采用震动波法测定承载索的中央挠度系数,而采用倾角法。倾角法测定系统由新近研制成功的钢索倾角测定器和表示θ角与α角和S的关系的数值表所构成。角θ_1、θ_2为钢索倾角,即上、下支点间承载索切线与水平线所成之夹角。角α为跨距倾角,即
The cable tension of the cableway is largely influenced by the size of the central deflection factor S. S is small, prone to super-pull; S is too large, but also increased the impact stress and bending stress, but also may affect the impact of wood bales run. Deflection coefficient is the biggest cause of broken load cable. Therefore, the determination of the load carrying cable tension is required not only during erection but also during the regular maintenance of the ropeway. Recently, the inclination deflection method can not be used to determine the central deflection coefficient of a carrier rope by the method of vibration wave method, since there are often devices such as a device for preventing the load from sagging after the load-bearing cable. Inclination measurement system consists of a newly developed cable inclination tester and a numerical table representing the relationship between the angle θ and the angle α and S. The angles θ_1, θ_2 are the inclination of the cable, that is, the angle formed by the bearing of the cable cutting line and the horizontal line between the upper and lower fulcrums. Angle α is the span pitch, ie