In industry, bucket elevator application tensioning device in  role is to make early traction chain has enough tension to make the traction chain often in tension, to ensure normal working elevator. In addition tensioning device and also to meet the new system after installation and adjustment of the overhaul, the compensation chain, sprocket wear and the chain elongation under load and so on. Bucket elevator traction chain elongation in general is not at work, even after elongation can also removed some of the chain link, thus tensioning stroke tensioning device is also smaller, usually spiral tensioning device can meet the needs of their work. Spiral tensioning device features aerated concrete equipment bucket elevator is in the adjustment screw rotation and forward movement, and nuts. The bearing 1, the screw 3 and the guide 2 composed of a soft. Screw-type tensioning device, the traction during operation of the chain tension varies with time. During use, the wear of the sprocket and chain, the chain is gradually stretched tension decreases, it must be regularly checked and adjusted. Spiral t tensioning device should be larger than the stroke of the chain pitch some general admission l = t + (50-100) mm, so that in the future be able to remove the chain elongation of a chain link. Bucket elevator is part of aerated concrete production line equipment, but also the vital equipment, welcome people with lofty ideals to Zhengzhou Yufeng Heavy Machinery Co., conducted site visits and visits!