OCS of Beijing-Shanghai railway adopts special type swivel cantilever with the skewed tube supported by bracket and messenger wire seat installed at the top tube, the paper analyzes the calculation process of cantilevers used for Beijing-Shanghai railway and combines the software technology during application and shows that it has a good results in application.

Introduces the compiling of horizontal type cantilever structure parametrization analysis program by finite element method combined with ANSYS software.

The principal technical parameters, fundamental of operation, points of technical creation of the straight-advance self-propelled minimum sprinkler with double rotation arm which is newly-developed and the result of performance test are narrated in this paper.