Weft-searching transmission mechanism for loom

The utility model discloses a weft-searching transmission mechanism for a loom and belongs to the field of loom parts. A conventional weft-searching transmission mechanism for a loom has defects that the sealing effect of a tank is poor, and the mounting and the maintenance are difficult. The main characteristics of the utility model are that a mounting through hole and a shaft hole are disposed on the tank; the center line of the mounting through hole is coaxial with the center line of the shaft hole; a transverse shaft is disposed across the shaft hole; a worm gear worm set is arranged in the inner cavity of the tank; an auxiliary end cap is disposed in the mounting through hole, and is provided with a central through hole; a worm gear is arranged on a worm gear hub; the worm gear hub is composed of a shaft sleeve and a wheel hub disc, wherein the shaft sleeve and the wheel hub disc are connected to be a whole body; the shaft sleeve is sleeved on the transverse shaft via the supporting of a bearing, and ext