Stabilizing roll expansion joint structure

The utility model provides a stabilizing roll expansion joint structure which comprises an expansion joint connecting a drive side flange face with an operation side flange face, wherein the expansion joint is formed by sleeving at least two layers of corrugated pipes, at least two layers of corrugated pipes are divided into two sections, and the two sections of corrugated pipes are connected by a nipple. The stabilizing roll expansion joint structure has the beneficial effects that the working condition requirement of back-and-forth swing of the expansion joint can be met through deformation of the nipples, so that deformation on all the wavelength of the expansion joint is prevented from being accumulated in one direction and deformation can be separated on two wave bands, thus preventing the problem of too high local stress of the expansion joint, reducing the thickness of the expansion joint, reducing the rigidity of swing of the expansion joint, reducing the weight of the expansion joint, improving the t