Crane transmission output flange seal damage analysis of the reasons

Crane the analysis of the causes of transmission oil seal damage output flanges - 2019 03 - A certain kind of crane configuration 11 according to user feedback, DANA transmission output flange before, often appear oil seal failure breakage, leakage, and change oil seal and the fault appear again soon. This article on the oil seal damage reasons are analyzed, and puts forward some improvement opinions. The crane transmission power relay route is shown in figure 1. The shaft connected to the transmission output flanges before 1, transfer power to the front axle. The shaft are connected to the transmission output flange after 2, transfer power to the rear axle. Including 1 shaft as the telescopic, 2 for extensible drive shaft. Output flange seal is located in before the output flange connected to the transmission it, as shown in figure 2, figure 2, the green part is the oil seal. We analyzed the structure of combined with the drive shaft and the shaft 1, 2, think before output flange seal damage is mainly caused by the shaft 1 not scale. The transmission adopts the elastic element, crane used in the process of transmission will produce vibration. Scalable transmission shaft 1 work, for the former pull output flange, prior to the transmission output flange along the axial displacement of the output shaft, oil seal in a long time under the action of squash and stretch, damage occurs. According to the damage reasons of oil seal, and we will drive shaft 1 changes as an extensible, to avoid the axial displacement of the output flanges before transmission. After using extensible drive shaft, the flange seal type hoisting transmission often damage problem has been effectively solved, that improving success.