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节流调速系统节流调速较多应用于具有定量泵的液压系统中,调节机构是节流阀(或控制滑阀),用以改变其通流截面积来控制进入油缸(或液压马达)的流量。在节流调速的液压系统中,油泵的流量应大于油缸(或液压马达)最大速度时所需要的流量,以保证运动速度和维持一定压力的需要以及补充液压系统中漏损量。因此,油缸(或液压马达)在任何工作速度下,总有一部份流量是通过溢流阀(或节流阀本身)流回油箱,没有作任何有效功,这是一种损失,当油缸(或液压马达)在低速工作时尤甚。所以这种稠速方法不宜用于大功率的传动装置中。(一)节流调的基本方式节流调速系统的特性和节流阀(或控制滑阀)的结构及其在系统中安装位置有关。节流阀(或控制滑阀)是可调的液压阻力,这可以通过改变它的通流截
Throttle speed control system Throttle speed control is more used in the hydraulic system with a fixed pump, the adjustment mechanism is a throttle valve (or control spool) to change its flow cross-sectional area to control the access to the cylinder (or hydraulic motor ) Of traffic. In the throttling speed of the hydraulic system, the pump flow should be greater than the maximum speed of the cylinder (or hydraulic motor) required flow, in order to ensure the movement speed and the need to maintain a certain pressure, and to supplement the hydraulic system leakage. Therefore, the cylinder (or hydraulic motor) at any operating speed, there is always a part of the flow through the relief valve (or throttle itself) back to the tank, without any effective work, which is a loss, when the fuel tank ( Or hydraulic motor) especially at low speeds. Therefore, this method of thick speed should not be used in high-power transmission. (A) the basic mode of throttling transfer throttling speed control system and the throttle valve (or control valve) structure and its location in the system installation. The throttle valve (or control spool) is adjustable hydraulic resistance, which can be changed by its flow through the cut