Lower portion of three-leaf linkage hanging and pushing door

The utility model relates to the technical field of door and window profiles, in particular to a three-leaf linkage hanging and pushing door lower portion which comprises a first reinforcing frame and a second reinforcing frame, the lower side of the first reinforcing frame is connected with the second reinforcing frame, a first wool top clamping groove is formed in the bottom of the second reinforcing frame, and hook wheel installation grooves are symmetrically formed in the two sides of the second reinforcing frame. The sliding door is used for a middle leaf, the hook wheel is arranged in the hook wheel installation groove, the hook wheel is connected with the hook wheel abutting plate in a sliding mode, the sliding door is prevented from swinging left and right or being separated from a door frame, the sliding door is not prone to falling off, the structural stability is effectively improved, and the sliding door is convenient to use and high in practicability. By installing the sealing wool tops in the fi