COMPENSATING APPARATUS FOR FURNACE GRATES

摘要

Apparatus which compensates for thermally induced changes in the width of gaps between longitudinally extending marginal portions of grate sections in industrial furnaces has two rows of plate-like cheeks which abut against the marginal portions of neighboring sections and can swivel on fulcra defined by the webs of inverted u-shaped supporting devices whose legs are turnable about pivots mounted in a frame and extending in parallelism with the marginal portions of grate sections. The cheeks are urged away from each other and against the marginal portions of neighboring grate sections by pairs of two-armed levers mounted on a common shaft which is biased downwardly by a package of dished springs through the medium of a pull rod. The cheeks of each row are secured to plate-like carriers which are disposed between the respective rows of cheeks and the corresponding arms of the levers and are swingable on the associated fulcra. The upper portions of cheeks which face each other define orifices for discharge of heated or cooling gases into the spaces above the neighboring grate sections.