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QUY50A型履带起重机主、副卷扬滚筒为同轴式布置,主、副卷扬共用1个液压马达。主、副卷扬滚筒各有1套鼓式离合器、带式制动器和棘爪锁定装置组成的控制机构。其中鼓式离合器用于控制主、副卷扬滚筒与液压马达的接合与分离,带式制动器和棘爪锁定装置用于主、副卷扬滚筒的制动与锁定。现分别就鼓式离合器、带式制动器、棘爪锁定装置的结构特点及操作调整要点加以说明。
QUY50A-type crawler crane main and auxiliary winch drum for the coaxial layout, the main and auxiliary winch share a hydraulic motor. The main and auxiliary winch drums each have a drum clutch, belt brake and pawl locking device consisting of a control mechanism. The drum clutch is used to control the engagement and disengagement between the main and auxiliary winch drums and the hydraulic motor. The belt brake and the pawl locking device are used for braking and locking of the main and auxiliary winch drums. Now on the drum clutch, belt brakes, pawl locking device structure and operation of the main points to be explained.