1.存在的问题在工程机械生产加工过程中,需要使用桥式起重机将不同规格型号的零部件吊运到相应工位进行加工或组装,这就需要随时更换不同用途的吊具。但是这些吊具用后经常随意摆放,其绳索容易缠绕到一起,再次取用吊具时十分不便,如图1所示。由于吊具质量较重,采用位置固定的器具存 1. Existing problems In the construction machinery production and processing, the need to use a bridge crane will be different specifications and parts of the lifting of the corresponding station for processing or assembly, which requires replacement of spreaders for different purposes. However, these spreaders are often placed freely after use. The ropes are easily entangled with each other. It is very inconvenient to use spreaders again, as shown in FIG. 1. Due to the heavier spreader, the use of a fixed position of storage equipment