一、限矩型液力偶合器的设计在120顿米塔式起重机的行走机构中,采用了限矩型液力偶合器。它起动平稳,有良好的过载保护作用;它结构简单,加工方便,易于维修保养。该限矩型液力偶合器的工作腔采用限矩型流道。在额定工况,转差率较小,流道中是小循环,有较高的效率。在转差率增加时出现大循环,这时由于流道阻力的迅速增加,限制了传递扭矩的增大而达到限矩的目的。这种液力偶合器循环流道中油量不变,不需辅助油室和延充阀等辅助机构,从而结构简单,便于制造 First, the limit of the design of the hydraulic coupling In 120 m-tower crane walking agencies, using a torque limiting type fluid coupling. It starts smoothly, with good overload protection; it has the advantages of simple structure, convenient processing and easy maintenance. The working chamber of the limit-torque fluid coupling uses a limited-length flow path. In the rated conditions, the slip rate is small, the runner is a small cycle, a higher efficiency. When the slip increases, a large circulation occurs. At this time, the rapid increase of the flow resistance limits the increase of the transmission torque to achieve the limit torque. This fluid coupling circulating flow in the oil unchanged, without auxiliary oil chamber and extension valve and other auxiliary agencies, which is simple and easy to manufacture