| 摘要 |
The weighing machine for conveyor belts consisting of a conveyor belt, a weight roller joint by a connection member with a balancing lever fitted with counterweights balancing the mass of the weight roller and the belt, a set of devices for receiving changes in the lever position, a set of power supply devices and signal send and process devices, and a set of readout and sum up devices for processed signals and for generating control signals for packing equipment, consisting in that the set of devices that receive changes in the lever position (4) consists of a photoelectric sensor of position shift and current/equilibrant force sensor (17a) that operates in parallel, and set of devices for power supply and for sending and processing signals related to this process includes an amplifier (18) for the position shift sensor (14) signal to control the temporary belt load meter (19), and the current/equilibrant forces converter (17a) bringing the lever into equilibrium, and at the same time, a signal compensating the lever (4) shift in form of the current intensity is converted in a resistor (20) first into a proportional voltage and then into a digital form in a voltage/frequency converter (21) and such a digital signal is transferred, in a known way, to the equipment set out for reading out and summing up and counted in a digital counter (22) which at the same time shows the number of counted impulses, and having counted the pre-set number of pulses, it generates a control signal for the packing system, resets and measures the next batch.<IMAGE>
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