Objective to acquire reasonable modification methods and values, and provide reference for gear modification of wind gearboxes. Methods the parallel level model of a MW wind gearbox is constructed which based on Romax software. To simulate the modification of high-speed gears under the method of profile modification, end relief, helical angle correction, lead crowing. Results According to the distribution of load on the tooth surface, acquired corresponding value. Conclusions Romax software greatly increase productivity, and it is a good platform for research on gear modification.
Wind turbine gearbox is a key component to transmit power in wind turbine driveline. It is necessary for gearbox to have high reliability and durable quality, and so, it is obviously important to analyze the reliability of key components and the root of common failure. By means of RomaxWIND software, gearbox simulation model was built which is based on the flexible FE structures. Considering the effects of flexible FE structures, such as housing and ring gear, and capturing system effects, analysis is performed to estimate the performance of components under 20 years’ LDD, and the bearing and gear report were generated. Gear mesh misalignment is one of the major gearbox failure causes. In view of it, three different models were built for the analysis of mesh misalignment, the result reveal that the effect of flexible FE structures should not be ignored.
Aim at technical improve of the control system in the Wind Turbine Gearbox Test Device at a factory of Yinchuan , the design plan of the control system Based on Mitsubishi FX series PLC,FX2n-4AD,FX2n-4DA,Mitsubishi FX series Ethernet adapters and King View are put forward ,lower processor was composed by FX2N series CPU module and I/O module in that control system , moreover , centralized management and real-time monitoring of collect data are carried out through the upper processor that adopts industrial computer and King View . Through the improvement device become automation, enhance safety and capacity of product development of company.
In this paper, based on B & K pulse system, the noise test analysis had been implemented on the load test station of a company in Yinchuan. It is clear and concise that displayed noise distribution situation of the load test set by BK sound intensity probe, 3560B-type multi-analysis system and pc machine. Through the CPB analysis, it can quickly get the main segment of the noise and the real-time monitoring of the gearbox, so the quality of the product is guaranteed.
Objective The principle and method of the force application is researched in orthodontics field, providing the scale and location of force for clinical orthodontics. Methods Reverse engineering software is used to reconstruct a 3-D mandible finite element model, the MBT bracket and straight archwire on the dentition are modeled on it. Change the elastic module of archwire to simulate four stages of orthodontics and the displacement and stress on dentition and mandible are acquired. Results The finite element results of dentition and mandible under short Ⅱ elastics are obtained, the results show that titanium-nickel archwire may provide major displacement for dentition; O and stainless steel have good force-transmission in teeth. The stress of single tooth and mandible are symmetrical except for the position where loads are applied. Conclusions Under the short II elastics loads, bone absorption don’t appear and the bodily movement of mandible is arose.
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