桥式起重机的新型运行机构

大型桥式起重机的分别驱动运行机构常布置在箱形主染内部，为此要求它外形尺寸小，重量轻，并昼减少因主染变形引起的传动部件变位，延长零部件的使用寿命，本文介绍的新型运行机构可以基本满足这些要求，特别是由于采用了涡流制动器调速系统，更加改善了运行机构的运行特性。

New crane travelling mechanism for overhead travelling crane

Crane travelling mechanism with individual driving units for large overhead travelling crane is often situated within crane's box girders. The mechanism should be small in size, light in weight and not sensitive to the deformation of main girders, which might cause displacement of transmission parts of the mechanism and thus shorten their working life. A new design of crane travelling mechanism introduced in this paper meets above mentioned requirements. Particularly the use of eddy current speed control system improves performance of the mechanism.