我国定型生产的 HL300链条提升机,原设计的张紧链轮为整体式,材料采用 HT18-36,磨损较快,更换时劳动强度、工作量都很大,停机的时间也较长。考虑到这种链轮重量大,为了不影响生产,常得先组装一套链轮组备用,因此备件费用也较高。针对这种情况,我们根据一种荷兰制造的链条提升机结构,对张紧链 China HL300 chain hoist stereotypes production, the original design of the tension sprocket as a whole, the material used HT18-36, wear faster, labor-intensive replacement, the workload are large, downtime is longer. Taking into account the heavy weight of this sprocket, in order not to affect the production, often have to assemble a sprocket set spare, spare parts costs are higher. In view of this situation, according to a Dutch-made chain hoist structure, the tension chain