The stretching device is the belt conveyer essential part, is affects the transportation to lead one of tensity major components, its direct relation belt type conveyer's safe operation and the service life, speaking of the great transportation amount, the long distance and so on large-scale belt conveyer's normal operation especially important.
This belt conveyer hydraulic pressure stretching device's design is in the absorption country, the inside and outside conveyers tighten in the technical foundation, according to domestic belt conveyer's movement characteristic and request development one kind of new hydraulic pressure stretching device. Uses the proportional control technology and the reliability high programmable control technology, may carry on the multi-spot control to the tensioning force, momentarily adjusts the tensioning force according to the different working condition the size. Realizes automatically in the adhesive tape machine when the start provides the big tensity (approximately for normal operation when tensity 1.5 times), when normal operation small tensity. Enables the adhesive tape to have the science reasonable tensity in the work process, namely prevented the adhesive tape started when to slip, might also cause the adhesive tape machine normal operation not at the tight condition. May lengthen adhesive tape's life using this equipment, saves conveyer's run cost greatly. In this design, increased using the pulley organization has tightened the traveling schedule, avoided using the traveling schedule long hydraulic cylinder, reduced has made hydraulic cylinder's difficulty. In the hydraulic system uses the accumulator, may the absorption line shock maximum limit, reduce to the variation of load to the adhesive tape the impact, enhances adhesive tape's service life.
Key words: Belt-type conveyer, full automatic hydraulic tension station , proportional control, programmable control