Analysis and solution of common faults of cranes

When we use the equipment, we will also encounter machine failures. We also need to briefly understand what is wrong with the machine. Now we will give you a brief analysis of the small series: Analysis and Solution of Crane Common Faults When we use the equipment, Will encounter machine failure, we must also briefly understand what is wrong with the machine, now Xiaobian will give you a simple analysis:
1. Determine whether a crane is equipped with a torque detecting sensor or a weight detecting sensor, that is, whether the input of the lifting wire rope ratio is required when the torque limiter is set, and if necessary, the weight detecting sensor, and vice versa, the torque detecting sensor .
2. The most common torque detecting sensor is installed at the connecting pin of the variable amplitude hydraulic cylinder. Since the two sensors are bridges, the potential level is low and sensitive, so shielded wires are often used, and once the shield or joint If it is damaged, it often has a great influence on the test results. Therefore, when replacing the cable, it is necessary to use a whole intact shielded wire, and the solder joint is required to be smooth and reliable, and the joint should also be waterproof.
3. The angle detection, arm length detection and orientation detection sensors generally use a potentiometer. Its common fault phenomenon is that the display value jumps, changes or changes on the display. The inspection method is to use a multimeter to detect whether the sensor output signal is continuous, or to remove the sensor, and rotate it by hand at a constant speed. Check the resistance change of the output terminal and the total resistance of the output terminal through the multimeter to match the calibration value. If there is an abnormality, the sensor has a problem. Just replace it. However, the installation position of the angle detector and the orientation detector is very important. Appropriate marking should be made when disassembling, and care should be taken when installing. Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn

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