Abstract:

Electromagnetic system is an important part of railway signal snap-in relay,the armature stroke in the electromagnetic system has a direct impact on the electrical characteristics of the railway signal snap-in relay,armature angle is an important factor affecting the armature stroke.In order to improve the screening accuracy of the armature angle,the armature parts in the railway signal snap-in relay is taken as the research object,A testing method for simulating the internal angle of the armature bending angle of the armature movement process in the relay is proposed.According to this method,the armature bending angle inner angle testing device is designed.After the design is completed,it is tested in actual production.It is found that the angle test results of the armature screened by the device are more in line with the normal distribution,and the electrical characteristics consistency of the armature assembled into the relay obtained by screening is better,which can prove that the screening error of the device is smaller than that of the existing method.

Key words: snap-in relays, electrical characteristics, armature inner fold, angle testing method