Transport mechanism and heat treatment furnace having the same

摘要

A transport mechanism and a heat treatment furnace capable of smoothly transporting an object to be heated inside a furnace. A plurality of pipes 15 are continuously arranged to form a rail 5 and among the plurality of pipes constituting the rail, when viewed from mutually opposed ends of a pair of pipes adjacent in the carrying direction, rails , The upper portion of the end portion 17 of the tube 15 b on the downstream side in the transport direction is located at a position lower than the upper portion of the end portion 16 of the tube 15 a on the upstream side in the transport direction , The object to be heat-treated 4 moving on the pipe 15a on the upstream side in the conveying direction can be transferred onto the pipe 15b on the downstream side in the conveying direction without colliding with the end portion of the pipe 15b on the downstream side in the conveying direction, Even when the pipe thermally expands the largest among at least a part of opposed end portions among a plurality of opposed end portions formed by arranging a plurality of tubes in a continuous manner, A gap G that prevents the deformation 5 from being deformed is provided.