Meanwhile the construction and working principle of brake clearance self-adjusting devices of screw push rod type, ratchet gear type and cam type for brakes of leading and trailing brake shoe type are analysed and studied. 对领从蹄式制动器的螺纹推杆型制动间隙自调装置、棘齿型制动间隙自调装置和凸轮型制动间隙自调装置的结构和工作原理进行了分析和研究。
Parking brake system for mechanical disc brakes, after manually using remote control cable ratchet body. 驻车制动系统为机械式手动后盘式制动,采用远距离棘轮拉索操纵机构。
The main work includes the following several parts: touch the pump body, make way for agencies, balance weight protection, brake mechanism. Firstly, the overall program design of energy-saving pumping unit change direction by ratchet. 本课题的研究主要工作包括以下几个部分:首先,棘轮换向节能式抽油机的总体方案设计。