液压伺服马达密封性研究
发布时间：2018-08-06 19:54
【摘要】：雷达是机载电子设备的核心,通过雷达探测为载机火控系统获取敌我目标的准确位置和速度信息,从而实现对既定目标及时的跟踪或精确打击。由于探测的需要,需借助液压伺服马达实现天线按一定速度运转和调整姿态。由于结构空间的限制,在密封设计上应用O形密封圈沟槽结构来保证液压伺服马达密封。根据载机所使用的10号或15号航空液压油,常用耐航空液压油的5080丁腈橡作胶作为液压马达的密封件材料。某雷达液压伺服系统与飞机起落架系统直接连接,雷达密封性直接决定飞机液压系统安全,因此对该雷达液压系统的外部渗漏具有严格规定,要求雷达在正常工作30分钟内密封结合表面无油滴滴落。而GJB2189-94中对单位飞机定量液压马达要求为马达连续工作60min内,泄漏量不大于5ml,因此对雷达液压系统中液压伺服马达的密封性能要求明显高于国军标中的相关密封性能要求。本文首先使用大型有限元分析软件,依据液压伺服马达工作油压、背压环境和安装间隙等典型条件,研究液压马达中O形橡胶密封圈的内应力和接触压力规律,并通过正交试验,对有限元分析结果进行了验证。然后,加工和设计了系列调整垫片,进行了间隙密封压差试验,并测试了马达密封结构的内漏与压差。最后,对加工和设计的液压伺服马达进行了低温密封试验和长周期寿命试验,试验结果表明,马达密封性能满足要求。
[Abstract]:Radar is the core of airborne electronic equipment. The accurate position and velocity information of the target is obtained by radar detection for the onboard fire control system, so that the target can be tracked or struck accurately in time. Because of the need of detection, it is necessary to use hydraulic servo motor to realize the antenna running at a certain speed and adjusting the attitude. Due to the limitation of structure space, O-ring groove structure is applied to seal design to ensure hydraulic servo motor seal. According to the aviation hydraulic oil No. 10 or No. 15, the rubber of 5080 butadiene rubber is used as the sealing material of hydraulic motor. The radar hydraulic servo system is directly connected with the aircraft landing gear system, and the radar seal directly determines the safety of the aircraft hydraulic system, so the external leakage of the radar hydraulic system is strictly regulated. The radar is required to seal off the oil-free drop on the surface within 30 minutes of normal operation. However, the quantitative hydraulic motor of unit aircraft in GJB2189-94 is required to work continuously in 60min, and the leakage is not greater than 5 ml, so the sealing performance of hydraulic servo motor in radar hydraulic system is obviously higher than that in the national military standard. In this paper, the internal stress and contact pressure of O-shaped rubber seal ring in hydraulic motor are studied according to the typical conditions of hydraulic servo motor, such as working oil pressure, back pressure environment and installation clearance, by using large-scale finite element analysis software. The results of finite element analysis are verified by orthogonal test. Then, a series of adjusting gaskets are processed and designed, the clearance seal pressure difference test is carried out, and the internal leakage and pressure difference of the motor seal structure are tested. Finally, the low temperature seal test and long cycle life test of the hydraulic servo motor are carried out. The experimental results show that the sealing performance of the motor meets the requirements.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN957
本文编号：2168818
[Abstract]:Radar is the core of airborne electronic equipment. The accurate position and velocity information of the target is obtained by radar detection for the onboard fire control system, so that the target can be tracked or struck accurately in time. Because of the need of detection, it is necessary to use hydraulic servo motor to realize the antenna running at a certain speed and adjusting the attitude. Due to the limitation of structure space, O-ring groove structure is applied to seal design to ensure hydraulic servo motor seal. According to the aviation hydraulic oil No. 10 or No. 15, the rubber of 5080 butadiene rubber is used as the sealing material of hydraulic motor. The radar hydraulic servo system is directly connected with the aircraft landing gear system, and the radar seal directly determines the safety of the aircraft hydraulic system, so the external leakage of the radar hydraulic system is strictly regulated. The radar is required to seal off the oil-free drop on the surface within 30 minutes of normal operation. However, the quantitative hydraulic motor of unit aircraft in GJB2189-94 is required to work continuously in 60min, and the leakage is not greater than 5 ml, so the sealing performance of hydraulic servo motor in radar hydraulic system is obviously higher than that in the national military standard. In this paper, the internal stress and contact pressure of O-shaped rubber seal ring in hydraulic motor are studied according to the typical conditions of hydraulic servo motor, such as working oil pressure, back pressure environment and installation clearance, by using large-scale finite element analysis software. The results of finite element analysis are verified by orthogonal test. Then, a series of adjusting gaskets are processed and designed, the clearance seal pressure difference test is carried out, and the internal leakage and pressure difference of the motor seal structure are tested. Finally, the low temperature seal test and long cycle life test of the hydraulic servo motor are carried out. The experimental results show that the sealing performance of the motor meets the requirements.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN957
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2 吕和祥;橡皮环大变形接触问题[J];应用数学和力学;1986年03期
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