一、结构及工作原理棘轮机构是一种常见的间歇运动机构。它主要由棘轮和棘爪两部分组成,如图1所示。棘爪和棘轮间的啮合通过压紧弹簧或其它压紧装置实现。由图1不难看出,当装棘爪的摆杆顺时针方向摆动时,棘爪插进棘齿间,推动棘轮旋转;摆杆反时针方向摆动时,棘爪在棘轮 First, the structure and working principle Ratchet mechanism is a common intermittent movement mechanism. It is mainly composed of ratchet and pawl two parts, as shown in Figure 1. Engagement between the pawl and the ratchet is achieved by a compression spring or other pressing device. It is easy to see from Figure 1, when the pawl mounted pendulum swings clockwise, the pawl inserted between the ratchet teeth, pushing the ratchet rotation; swinging the pendulum anti-clockwise direction, the ratchet ratchet