本文介绍一种新的调距桨系列。桨毂设计采用一个运动油缸,它带有置于桨叶之间的伺服油缸。其特征包括高强度曲柄环和改进了的桨叶密封。输油箱所在的轴上安装了变距主泵,高压油就在旋转轴中,因此不需要大直径的高压密封。在低速工作时有一个辅助泵供给低压油。采用两个辅助伺服油缸的一个简单装置,即使当主液压系统失灵时,也能控制主液压控制阀和把桨叶转动到正车位置。 This article describes a new pitch paddle series. The hub design uses a moving cylinder with a servo cylinder placed between the blades. Features include a high-strength crank ring and improved paddle seal. A variable-pitch main pump is installed on the shaft where the fuel tank is located, and high-pressure oil is in the rotating shaft, thus eliminating the need for large-diameter, high-pressure seals. An auxiliary pump supplies low pressure oil at low speed. A simple device with two auxiliary servo cylinders controls the main hydraulic control valve and turns the paddle to the front position, even when the main hydraulic system fails.