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Guarantee the accuracy and stability of the driving electronic scale
Jul 11, 2018

The crane scale, as its name suggests, is an instrument for airborne loading and unloading and weighing. The crane and the driving are all popular names for lifting machinery. The crane scale is an electronic scale installed on a crane. It is a non-standard scale and is usually used in some steel and metallurgical plants.

In some steel metallurgical plants, because of the high temperature or the insufficient lifting height of the crane, the electronic crane scale can not be used, especially in the case of particularly large lifting tonnage, the cost of the large tonnage of the electronic crane scale is increased and safe. The nature is also reduced, the lifting height and the high temperature limit, the use of the hook scale is limited, but the heavy objects to be lifted must be measured during work. It is in this case, the individual weighing instrument factory and the crane The factory jointly developed a crane scale (driving scale). However, due to the influence of the manufacturing process and sensor performance, the crane scale (driving scale) is usually not too high, probably about 0.5% -1%. Therefore, according to national standards, the standard three-level scale can be used as a scale for industrial and commercial use, while the crane scale (driving scale) can only be classified as a four-level scale, so in general, the crane scale (driving scale) is only used inside the factory. Settlement or process control. In the crane (driving), due to many restrictions, such as space, installation difficulty, safety and other factors, the crane scale (driving scale) installation methods are also diverse, such as fixed pulley type, small model, track type, etc. This needs to be based on the situation on the spot.

Since the driving electronic scale is loaded with the sensor through the transmission shaft, the loading position is generally U-shaped, so that the transmission shaft and the sensor are in line contact, and the loading point is deviated due to difficulty in maintaining the installation level requirement of the sensor during installation and loading. The force axis of the sensor moves to the outer edge of the sensor, which affects the accuracy of the scale. After the “fish-back” loading structure, the contact between the force transmission shaft and the sensor can be changed into point contact, and it will not be because The horizontal degree of change between the sensors causes the loading point to shift to the outside of the sensor, which ensures the accuracy and stability of the driving electronic scale.


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