FM9925A-E模块备件数据库

由于压力油作用，受力不平衡使转子产生转矩。叶片式液压马达的输出转矩与液压马达的排量和液压马达进出油口之间的压力差有关，其转速由输入液压马达的流量大小来决定。由于液压马达一般都要求能正反转，所以叶片式液压马达的叶片要径向放置。为了使叶片根部始终通有压力油，在回、压油腔通入叶片根部的通路上应设置单向阀，为了确保叶片式液压马达在压力油通入后能正常启动，必须使叶片顶部和定子内表面紧密接触，以保证良好的密封，因此在叶片根部应设置预紧弹簧。叶片式液压马达体积小、转动惯量小、动作灵敏、可适用于换向频率较高的场合；但泄漏量较大、低速工作时不稳定。因此叶片式液压马达一般用于转速高、转矩小和动作要求灵敏的场合。径向柱塞式液压马达工作原理，当压力油经固定的配油轴4的窗口进入缸体内柱塞的底部时，柱塞向外伸出，紧紧顶住定子的内壁，由于定子与缸体存在一偏心距。在柱塞与定子接触处，定子对柱塞的反作用力为 。力可分解为和 两个分力。当作用在柱塞底部的油液压力为p，柱塞直径为d，力和之间的夹角为X时，力对缸体产生一转矩，使缸体旋转。缸体再通过端面连接的传动轴向外输出转矩和转速。以上分析的一个柱塞产生转矩的情况，由于在压油区作用有好几个柱塞，在这些柱塞上所产生的转矩都使缸体旋转，并输出转矩。径向柱塞液压马达多用于低速大转矩的情况下。

Due to the action of pressure oil, the unbalanced force makes the rotor produce torque. The output torque of the vane hydraulic motor is related to the displacement of the hydraulic motor and the pressure difference between the inlet and outlet of the hydraulic motor, and its speed is determined by the flow of the input hydraulic motor. Since hydraulic motors generally require positive and negative rotation, the blades of vane hydraulic motors should be placed radially. In order to ensure that the blade root is always filled with pressure oil, a check valve should be set on the path from the return and pressure oil chamber to the blade root. In order to ensure that the blade type hydraulic motor can start normally after the pressure oil is connected, the top of the blade must be in close contact with the inner surface of the stator to ensure a good seal. Therefore, a pre tightening spring should be set at the blade root. The vane hydraulic motor has small volume, small moment of inertia, sensitive action, and can be used in occasions with high commutation frequency; However, the leakage is large and unstable at low speed. Therefore, vane hydraulic motors are generally used in occasions with high speed, small torque and sensitive action requirements. Working principle of radial plunger hydraulic motor: when the pressure oil enters the bottom of the plunger in the cylinder through the window of the fixed oil distribution shaft 4, the plunger extends outward and firmly presses against the inner wall of the stator, because there is an eccentric distance between the stator and the cylinder block. At the contact between the plunger and the stator, the reaction force of the stator on the plunger is. The force can be decomposed into two components, and. When the oil pressure acting on the bottom of the plunger is p, the diameter of the plunger is D, and the included angle between the force and is x, the force generates a torque on the cylinder block to make the cylinder block rotate. The cylinder block then outputs torque and speed through the transmission shaft connected to the end face. In the case of a plunger generating torque analyzed above, because there are several plungers acting in the oil pressure area, the torque generated on these plungers rotates the cylinder block and outputs torque. Radial piston hydraulic motors are mostly used in the case of low speed and high torque.