Loader Scale: Real-time weighing during the loading process of the loader

With the integrated development of modern science, technology, and measurement techniques, measurement applications in various settings have seen significant advancements, greatly improving both efficiency and accuracy. However, in the loading and transportation industry, there are notable deficiencies, particularly in the challenge of measuring bulk materials. This is especially evident in industrial and mining sites, railway yards, and ship terminals where loaders are used for mass loading and unloading of goods. Traditional weighing methods can no longer meet the demands for accuracy and weighing efficiency. For loader loading operations, the inability to achieve precise weighing during the loading process directly results in repeated loading and unloading, which is time-consuming, labor-intensive, increases costs, and causes economic losses to enterprises.

In response to the expanding need for weighing during vehicle loading processes, the emergence of the loader scale is an inevitable trend. The loader scale is a weighing device for loaders, integrated with the mechanical control system of the loader, enabling real-time weighing during the loading process. It allows for simultaneous "loading" and "weighing", and the weight of the loaded material is immediately known upon completion of loading. Due to its efficient loading and weighing capabilities, the loader scale is widely used in coal mines, ports, construction sites, and railway transportation for controlling cargo loading volumes.

Based on the weighing requirements during the loader loading process, the loader scale is installed in the cab. Given the limited space in the cab, the loader scale instrument is designed with a compact structure to minimize space occupation. Additionally, to facilitate real-time monitoring of the loaded weight by the driver, the instrument features a large color LCD screen display, along with standard voice announcements for each scoop, enabling the driver to monitor the weight without distraction, thereby enhancing safety.

Industrial and mining sites, ship terminals, and other operating environments often require shift work, including nighttime operations, where lighting conditions are poor, especially inside the cab. Under dim nighttime conditions, the keyboard of the loader scale instrument has a sensory function that automatically activates the backlight mode, allowing for easy operation even in low light.

The loader scale is not only designed to suit the operation and application scenarios of loaders but also features functional characteristics tailored for fully automatic dynamic weighing during the loading process.

The loader scale operates based on two pressure sensors installed on the oil inlet and return lines of the loader's boom cylinder, which measure the changes in cylinder pressure during the lifting process and adjust the speed. The central processor in the in-vehicle instrument automatically calculates the weight data, which is then displayed on the instrument screen.

During the loader's bucket lifting process, the pressure sensors transmit signals to the computer for data conversion and processing. When the loader scoops up cargo and the boom is immediately returned to its starting position, the instrument displays the cargo weight. When the loader's bucket is tilted to unload the cargo, the screen displays the cumulative weight. When the bucket descends back to its starting point, the screen shows the total cumulative weight of the cargo.

As evident from the loader's operation process, the entire procedure is fully automatic and dynamically changes in real-time along with the loader's scooping process. Whether the loader is moving or stationary during loading, it does not affect the operation of the loader scale. It is a fully automatic dynamic weighing device installed in the loader cab. The loader scale transforms the cumbersome and inefficient traditional vehicle loading measurement process, providing technical support for enterprise weighing and management.