Large tension's hot rolling coiling machine reel

The utility model discloses a large tension's hot rolling coiling machine reel, including breathing hydro -cylinder, half -coupling, key, dabber, piston rod and the dabber of breathing hydro -cylinder all set up in half -coupling, and the piston rod of breathing hydro -cylinder is connected with the dabber, and the piston rod of dabber and breathing hydro -cylinder and half -coupling's the department of cooperateing all are provided with the stress relieving structure. Stress concentration has been eliminated to this novel reel, has better bearing capacity and joint strength to large tension's belted steel can be batched, the belted steel of thick specification, high strength can be batched promptly. 本实用新型公开了种大张力的热轧卷取机卷筒，包括胀缩油缸、半联轴器、键、芯轴，胀缩油缸的活塞杆和芯轴均设置在半联轴器内，且胀缩油缸的活塞杆与芯轴连接，芯轴和胀缩油缸的活塞杆与半联轴器的相配合处均设置有应力消除结构。本新型卷筒消除了应力集中，具有更好的承载能力和连接强度，从而能卷取大张力的带钢，即能够卷取厚规格、高强度的带钢。