What is the function of the frame in an electronic belt scale? What are the advantages of a fully suspended electronic belt scale?

As we all know, an electronic belt scale is a measuring instrument installed on a section of a belt conveyor to dynamically and continuously weigh the material passing over the belt. It mainly consists of a frame, a load cell, a speed sensor, and instrumentation.

The frame of an electronic belt scale serves as the foundation for the scale's operation, acting as both a load-bearing and force-transmission device that supports the weight of the material. The frame includes fixed and movable parts, with the movable part primarily being the weighing idler. The material (including the weight of the belt) on the belt is transmitted to the frame through the weighing idler, and then the force is transmitted to the load cell.

Since the frame of an electronic belt scale is a force-transmission device, its structural design directly affects measurement accuracy. A more stable, durable frame with less friction, displacement, and force transmission loss, as well as a longer effective weighing area, results in higher measurement accuracy.

A qualified electronic belt scale frame should meet the following requirements:

(1) Reasonable structural design with a good force transmission system capable of overcoming horizontal forces;

(2) High strength, rigidity, and minimal deflection and deformation;

(3) Lightweight with few movable parts and minimal mechanical interference;

(4) Small horizontal surface area to reduce dust accumulation, suitability for dusty industrial environments, low maintenance;

(5) Simple structure for ease of manufacturing, transportation, installation, commissioning, and maintenance, as well as cost-effectiveness;

(6) Adjustment measures and space available.

There are various structural designs for electronic belt scale frames, including single-idler and multi-idler designs based on the number of idlers, and lever, suspended, and lever-suspended designs based on the force transmission method.

Lever designs can be further divided into single-lever and double-lever types. Different frame designs have distinct characteristics and can accommodate different conveyor lengths and inclination angles.

Generally, single-idler frames have a shorter effective weighing area and lower measurement accuracy, making them suitable for short conveyors where high accuracy is not required.

Lever-type frames offer a longer weighing area, sturdy load-bearing, and strong resistance to horizontal forces and off-center loads.

However, the force transmission process can affect measurement accuracy, resulting in moderate to high accuracy levels. Currently, the high-precision, new-type frame design is the fully suspended electronic belt scale.

The fully suspended electronic belt scale features a new, fully suspended structural design that is directly load-bearing, eliminating the measurement errors caused by force transmission through levers. It is lighter, simpler, and has fewer mechanical components, reducing the impact of the scale's own mechanics on measurement accuracy. With high structural strength and rigidity, it effectively minimizes the influence of lateral forces on measurement.

The fully suspended frame design can utilize multiple sets of idlers, with each set equipped with multiple load cells to form a weighing unit. These units can be flexibly combined based on conveyor conditions and weighing requirements to extend the effective weighing area and create a matrix-style weighing platform, resulting in higher measurement accuracy and stability.

Therefore, the frame of a fully suspended electronic belt scale offers high measurement accuracy and adaptability, making it suitable for applications with long conveyors, inclination angles, limited space, and high accuracy requirements such as trade settlements and production lines.

Guonuo Technology offers a range of low, medium, and high-series electronic belt scales and can customize a suitable and accurate frame based on specific user requirements and on-site environmental conditions.