The Advantages of Fully Suspended Electronic Belt Scales

Electronic belt scales are devices designed for continuous weighing and measurement of industrial bulk materials. They have become an indispensable scientific measurement method in the automated and serialized loading and unloading processes of bulk cargo. With the development of society and science and technology, the accuracy requirements for material measurement have become increasingly stringent. To enhance the accuracy of electronic belt scales, improvements must be made to aspects such as the scale frame, sensors, and instrumentation.

Sensor technology has rapidly advanced, with domestic sensors now boasting high sensitivity and accuracy rates of 0.05% to 0.02%. As technology progresses, intelligent display instruments have become more sophisticated, featuring simpler internal hardware, advanced software, rich and comprehensive functionalities, enhanced stability, and reliability, with accuracy rates reaching 0.03% to 0.02%. However, the scale frames of electronic belt scales have relatively lagged behind. In comparison, the accuracy of scale frames is lower than that of instruments. Therefore, the scale frame is a crucial factor in improving the accuracy, performance, and verification methods of electronic belt scales. Based on a summary of market measurement needs and our extensive experience, we have designed and developed the fully suspended high-precision electronic belt scale.

There are various types of electronic belt scales, classified by the number of rollers (single-roller or multi-roller) or by the scale frame type (suspended or lever). Currently, most manufacturers still produce lever-type scales, predominantly double-lever multi-roller frames. Although these frames offer relatively high structural accuracy, they involve multiple mechanical force transmission links, leading to measurement errors. Lever-type frames are not entirely obsolete and can still be used in applications where high accuracy is not required. However, in scenarios requiring high accuracy, such as trade settlements, lever-type frames fall short.

The fully suspended electronic belt scale adopts a multi-roller frame that is entirely different from the mechanical lever transmission method. It utilizes a special connection method with high-precision sensors to cleverly suspend the weighing frame within the belt conveyor space, eliminating the lever force transmission links. Each unit is independent yet freely combinable, completely eradicating the measurement errors and faults caused by lever-type force transmission. Even in environments with vibration or uneven material distribution, it maintains normal operation, significantly enhancing the accuracy and stability of the electronic belt scale.

The fully suspended multi-roller frame employs four weighing sensors for direct force transmission, eliminating mechanical transmission links. These four sensors exhibit high sensitivity and consistency in output. Compared to lever-type frames, fully suspended frames offer higher efficiency in monitoring signals. Under the same conditions of material flow, roller spacing, and belt speed, the total effective force on the weighing sensors is greater in fully suspended frames, thus improving the frame's accuracy.

The fully suspended frame consists of weighing rollers, supports, and a scale frame. The scale frame is suspended within the belt conveyor frame through four sensors. To prevent movement, adjustable limiters are used to connect the scale frame to the belt conveyor frame. This design eliminates fulcrums and torque, has no moving or wearing parts, avoids rubber aging issues, and ensures long-term reliable and stable operation.

Installation and debugging of the fully suspended frame are simpler and more convenient. The frame adopts rectangular formed tubing, providing sufficient rigidity while reducing weight. Installation time for the fully suspended frame is significantly less than that for lever-type frames. Additionally, the fully suspended frame has a smaller horizontal surface, accumulates less dust, and requires less frequent cleaning, eliminating the need for routine maintenance.

Extensive practical applications across multiple industries, fields, and settings have demonstrated that the fully suspended high-precision electronic belt scale offers high measurement accuracy, stable performance, and is suitable for high-flow, high-accuracy applications.