共查询到20条相似文献,搜索用时 71 毫秒
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叶片式气动马达作为一种通用动力设备,在油田、矿山、交通等行业都有较广泛的应用。由于叶片式气动马达工作转速较高,叶片在转子槽中高频率伸缩并随转子高速转动,对缸体内表面产生冲击和摩擦的双重作用,因此缸体在要求内表面耐磨的同时,缸体的基体还应有较高的硬度。 相似文献
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活塞式气动马达的动力特性分析 总被引:1,自引:0,他引:1
简要介绍活塞式气动马达的结构原理,利用能量守恒原理,推导出转速与负荷的计算公式。以本公司使用的发动机为例,通过计算,绘制出气动马达的动力特性n-M曲线。 相似文献
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介绍叶片式低速大扭矩液压马达性能与实验特点,以及试验台的设计和安装特点,对低速大扭矩液压马达的试验台设计和安装有实际指导意义. 相似文献
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气动齿轮马达静态特性的理论与实验研究 总被引:1,自引:0,他引:1
根据流体力学和气压传动原理,分析齿轮式气动马达的结构和特点,以力矩平衡的方法建立了气动式齿轮马达静态特性的数学模型,对一种用于锚杆钻机的气动式齿轮马达进行了理论计算,并和实验数据进行了比较,为齿轮式气动马达的优化奠定了理论基础。 相似文献
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针对目前气动微流控芯片控制系统微型化集成化的需求,提出了一种采用步进电机的微流控芯片气压驱动系统,通过控制器信号驱动步进电机,使PDMS流道产生了形变从而改变了阀口开度,实现了气体容腔的压力控制,对微阀的流量和气体容腔的压力进行了分析,采用Simulink搭建非线性模块,建立了系统的仿真模型,对系统的压力特性进行了仿真,得到了在不同的步进电机阶跃信号作用下的气压驱动系统压力的动态响应特性,并搭建了试验平台进行了验证。结果表明:试验结果与仿真结果基本吻合,该系统能够较快地响应于气压容器,阀口开度越大,气体容器的压力上升越快,稳定压力越高。 相似文献
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防滑阀为高速机车防滑制动的关键执行部位,当前缺少对其动特性的全面研究,存在仿真结果和检测结果无法统一的问题。首先,基于MATLAB/Simulink软件设计了防滑阀的物理仿真模型,获得了不同工作压力下防滑阀动特性的仿真曲线。其次,基于数据采集技术及气动控制技术研制了检测系统,实现对其动特性检测;通过获得高度拟合的仿真曲线和实验曲线,交互验证了仿真模型的正确性和检测系统的可靠性。最后,为全面分析相关参数对防滑阀动特性的影响,基于显著性分析理论和回归分析理论,在完成试验因子和动特性显著性分析的基础上,采用响应曲面法应用拟合总效果判定系数R~2=0.999 9、0.996 7,修正判定系数R■=0.998 5、0.995 2和预测判定系数R■=0.997 7、0.992 7的量化指标评估了试验设计的合理性,为防滑阀的结构优化设计提供了合理、可行的方法。 相似文献
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Ning CHEN Jieji ZHENG Xianliang JIANG Shixun FAN Dapeng FAN 《Frontiers of Mechanical Engineering》2020,15(4):585-599
Frontiers of Mechanical Engineering - Micro-stepping motion of ultrasonic motors satisfies biomedical applications, such as cell operation and nuclear magnetic resonance, which require a precise... 相似文献
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以0.5T气动葫芦为研究对象,对其马达进行了结构设计,并从运动学和动力学角度对马达叶片进行了计算和校核,确定了叶片所受的各种外力和各种惯性力,找出了叶片接触和弯曲疲劳的最危险截面,并进行了弯曲和疲劳强度校核计算,以最终确定了叶片的几何尺寸及形状。该计算过程和结果为0.5t气动葫芦的马达设计提供了理论依据。 相似文献
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The most common booster is called input pressure reduced (IPR) booster. However, this type of booster has its own shortages, such as its small output flow, when the boosting ratio is higher, the shortage becomes more distinct. Recent research on pneumatic boosters mainly focused on the factors that influence the characteristics of the boosters, some new kinds of pneumatic booster structures were designed, but the efficiency and output flow of these boosters are still not improved sufficiently. In order to improve the output flow of the pneumatic booster, a new kind of booster, expansion energy used (EEU) booster, is proposed. Non-linear differential equations of the pneumatic booster are set up. By using the software MATLAB/Simulink for simulation, the motion characteristics of the pistons, the characteristics of the output flow of the boosters are obtained for analysis of a principle. The principle, which is used to elevate the output flow of the two kinds of boosters, is that the average pressure of the air in the driving chambers of the EEU booster is higher than that of the IPR booster. The simulation and experimental research of the output flow characteristics are done. The simulation and experimental results are in a good accordance. And the simulation and experimental results show that when the air source pressure and the output pressure are set at 0.6 MPa and 0.8 MPa, respectively, with the increase of the terminal pressure of the air in the driving chamber, the output flow of the IPR booster ascends stably. As the terminal pressure of the air in the driving chamber goes up, the output flow of the EEU booster rises, and later it almost remains constant. In addition, with the same terminal pressure, the output flow of the EEU booster is greater than that of the IPR booster, and the difference decreases when the terminal pressure grows. At last, the output pressure is set at 0.8 MPa, under the optimum work state of the EEU booster, the output flow of the two kinds of boosters all declines with the rise of the boosting ratio. Furthermore, the output flow of the EEU booster is higher than that of IPR booster by 95 L/min approximately. The proposed research lays the foundation for optimistic of the EEU booster. 相似文献
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介绍了某一电站的导叶变形现象,详述导叶变形的情况,深入分析了变形产生的原因,阐述了修复的方法。从而强调了防止小型水电站的不规范化操作的重要性。丰富了导叶修复的常规方法。 相似文献