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针对现有起重机超起装置在随主臂伸缩臂动作的动态过程中容易出现瞬时松绳而导致卷扬乱绳的问题,提出一种超起装置卷扬钢丝绳收放绳控制系统及方法,即在超起机构中增加补偿液压缸及对应的液压控制系统,并根据实际工况制定防松控制策略,同时在出现松绳之前给钢丝绳施加一个预拉力,以弥补在伸缩臂过程中由于加减速导致的钢丝绳拉力瞬时降低。实际应用表明,该方法可以有效防止钢丝绳乱绳,使排绳时刻紧密规则,保证起重机安全吊载。
Aiming at the problem that the existing crane super-lifting device is prone to winch and rope disturbance during the dynamic process of the telescopic arm movement of the main arm, a control system and method for the hoisting wire rope retracting rope of the super-lifting device are proposed Add compensating hydraulic cylinder and corresponding hydraulic control system in super mechanism, and make the anti-loosening control strategy according to the actual working conditions. At the same time, apply a pre-tensioning force to the wire rope before the appearance of slack rope to make up for the acceleration and deceleration Resulting in the instantaneous reduction of the rope tension. The practical application shows that the method can effectively prevent the rope from being disturbed and the rules of the rowing rope are kept close at all times to ensure the safety of the crane.