【摘要】 本文从理论上分析了绳槽半径差△R、钢绳有效长度差△L、衬垫刚度及衬垫材料耐磨性等因素对多绳摩擦提升机衬垫使用寿命的影响。导出了确定衬垫使用寿命的计算式,并通过实例说明,衬垫维护的好坏对其使用寿命的影响是相当大的。当衬垫处于磨合运转状态时,△R及△L的存在对衬垫的最高寿命几乎没有影响。当衬垫处于加剧磨损状态时,衬垫的使用寿命将急剧减小。此外,本文还通过实例说明,若将衬垫简化为刚性体,其使用寿命的计算误差是很大的。因此,衬垫使用寿命的计算应当考虑其本身弹性的影响。更多还原

【Abstract】 The following factors which will affect a service life of a liner on a multirope friction hoist are theoretically analysed in this paper:1. △R—a radius difference of a rope slot;2. △L—a effective length difference of a wire rope;3. a stiffness of a liner;4. an abrasiveness of a liner material.Formulas have been introduced to determine a service life of the liner. The experiments have shown that a good or poor maintenance on the liner will have a relatively great effect on the service life of the liner.When the liner is in a frictional contact state,the existence of AR and △L will have almost no effect on the max. service life of the liner. Therefore, when the liner is in a serious abrasive state, the service life of the liner will be sharply reduced.This paper also provides some examples to show that as if the liner is regarded as a rigid body, there will be a great error in the calculation of the service life.Therefore, an elastic effect of the liner must be taken into account in the calculation of the service life.更多还原