Abstract: A movable device for filling one or more chambers with solid particles in the divided state, the device includes a movable frame, metering means for metering the solid particles comprising two or more metering plates comprising one or more perforations, the metering plates being arranged on top of one another such that the perforation or perforations of one metering plate is/are in connection with the perforation or perforations of the metering plate situated below and/or above it, so as to form one or more metering columns intended to be placed in connection with the chamber or chambers, means for simultaneously releasing the solid particles from the metering means to the chamber or chambers, a storage tank for storing the solid particles, which comprises a bottom pierced with through-holes that are connected with, or can be placed in connection with, the metering column or columns, and comprising unloading means for releasing the solid particles from the storage tank to the metering column or columns.