Transmission mechanism, opening apparatus and textile machine

A transmission mechanism, an opening apparatus and a textile machine are provided, and the transmission mechanism includes: a first toggle mechanism; a first connecting rod that is pivotally connected at its first end with a first end of the first toggle mechanism; a second connecting rod that is pivotally connected at its first end with a second end of the first toggle mechanism; a first heald frame connecting member that is pivotally connected at its first end with a third end of the first toggle mechanism and pivotally connected at its second end with a heald frame; a first rocking rod pivotally connected with a second end of the first connecting rod; a second rocking rod pivotally connected with a second end of the second connecting rod; a first transmission rod that is pivotally connected at its first end with the first rocking rod and connected its second end with one output rod of a shedding unit; and a second transmission rod that is pivotally connected at its first end with the second rocking rod and connected at its second end with the other output rod of the shedding unit; The transmission mechanism allows for reciprocation of the heald frame among the three positions.