The utility model relates to a sintering machine grate -layer material thickness of bed adjusting device belongs to sintering process equipment technical field. Technical scheme is: containing swing funnel, base, pull rod, limiting plate, sintering machine platform truck and scraper and constructing, the base is fixed in one side of swing funnel, the upper end and the base screw rod transmission connection of pull rod, and the lower extreme of pull rod constructs with the scraper through round pin axle and free bearing to be connected, the scraper constructs and to contain channel -section steel, bottom plate and antifriction plate, and the channel -section steel is fixed on the bottom plate, bottom plate and antifriction plate fixed connection, and the one end of limiting plate is fixed on the swing funnel, channel -section steel control connection during the other end of limiting plate constructs with the scraper. The beneficial effects of the utility model are that: can in time adjust grate -layer material thickness of bed according to the condition of production, improve sintering deposit quality and sintering deposit yield. Simple structure, maintenance convenient operation, low cost.