Pinch roll portal frame

The utility model aims to provide a novel portal frame for a pinch roll, which saves the dismounting and mounting workload for replacing an upper pinch roll and improves the production efficiency by improving the structure of the portal frame. According to the pinch roll portal frame, the part, comprising the adjusting rocker arm shaft, of the top of the portal frame is arranged to be an integrally detachable adjusting driving mechanism, and the left supporting wall and the right supporting wall are arranged to be integrally separable parts through the top mounting base; and the adjustment driving mechanism and the left supporting wall part only need to be disassembled in sequence, so that the original troublesome and laborious multi-step disassembly and assembly work is simplified into two steps, the disassembly and assembly process is simplified to a great extent, and the production efficiency is improved. 本实用新型的目的是提出一种新型的夹送辊龙门架，通过改良龙门架的结构，节省更换上夹送辊的拆装工作量，提高生产效率。该夹送辊龙门架通过将龙门架的顶部包括调节摇臂轴的部分设置成整体可拆卸的调节驱动机构以及通过顶