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圆环链是刮板输送机的重要牵引部件,圆环链质量的好坏,直接关系着刮板输送机的安全运行,本文就中小型刮板输送机广泛使用的φ18×64mm圆环链的使用与失效原因谈几点意见。一、圆环链的受力状态及破断形式圆环链的外形及受力情况如图1(a)。由于链环的几何形状与受力状态对于竖向和横向都是对称的,所以取1/4个环进行分析。当作用在链环上的外力为P时,则作用在OO′、AA′截面上的力和力矩如图1(b)所示。根据材料力学推导,其弯矩为:
Circular chain scraper conveyor is an important traction components, the quality of the circular chain is directly related to the safe operation of the scraper conveyor, scraper conveyor in this paper widely used φ18 × 64mm circular chain Talk with the reason of the failure. First, the circular chain of the force state and the form of broken circular chain shape and force situation shown in Figure 1 (a). As the link geometry and the force state are vertical and horizontal are symmetrical, so take 1/4 ring analysis. When the external force acting on the link is P, the forces and moments acting on the OO ’and AA’ sections are shown in Fig. 1 (b). According to the material mechanics deduction, the bending moment is: