我厂修造大型铁道起重机每年需Φ19～32mm钢丝绳数百根,长度由45m到450m不等,累计总长度约3万米。过去一直沿用人工测量计数的方法,劳动强度大,积累误差大,每年浪费钢丝绳1000m以上,价值20000余元。 为此,我们设计制成了一架钢丝绳自动测长计数装置(见图),它可以测录通过该机构的钢丝绳的长度(误差0.2％),使用方便而正确。 I plant to build large-scale railway cranes each year to be Φ19 ~ 32mm hundreds of rope, length from 45m to 450m, the total length of about 30,000 meters. In the past, the method of manually counting and counting was used. The labor intensity was large and the accumulated error was large. Each year, wire rope was wasted over 1000m and the value was over 20,000 yuan. To this end, we have designed a rope length measuring device (see picture), which can measure the length of rope through the mechanism (error 0.2%), easy to use and correct.