Three-way catalyst subassembly assembly testing fixture

The utility model relates to a three-way catalyst subassembly assembly testing fixture, which comprises a mounting bottom plate and a clamping mechanism, a mounting frame is fixedly mounted at the top of the mounting bottom plate, the clamping mechanism comprises a bracket, and a connecting ring is fixedly mounted at the top of the bracket. According to the three-way catalytic converter subassembly assembly testing fixture, when a user uses the three-way catalytic converter subassembly assembly testing fixture, the user can firstly sleeve a three-way catalytic converter into the inner side of a bracket, then the user can rotate a connecting rod to simply fix the three-way catalytic converter, and then the user can connect a sliding frame to the bottom of a mounting bracket in a sliding manner; then, a user can adjust a sliding frame to slide towards the inner side under the action of a mounting bracket until a limiting ring is tightly connected with the three-way catalyst, and at the moment, the user can pres