Rapid detection tool for welding strength of digital contact arm

Abstract

The utility model discloses a rapid detection tool for the welding strength of a digital contact arm, and relates to the technical field of detection. The device comprises an L-shaped detection frame. The L-shaped detection frame comprises a horizontal section and a vertical section; a contact arm is arranged on the horizontal section; a detection assembly is arranged on the vertical section; the detection assembly comprises a sliding block and two mounting rings; a detection gear ring is rotationally arranged between the two mounting rings; mounting plates are fixed on the peripheral side surfaces of the mounting rings; a detection gear is rotationally arranged on the surface of the mounting plate; slip rings are arranged on the inner walls of the mounting rings; a connecting plate is fixed between the sliding ring and the mounting ring; and an elastic diaphragm is hermetically connected between the slip ring and the mounting ring. According to the utility model, whether the contact arm has a leak can be judged by detecting the change of the contact arm and the elastic diaphragm by ventilating the inside of the contact arm, the position of the leak can be detected by a signal of the pressure sensor, the operation is convenient, and compared with ultrasonic detection, radiographic detection and the like, the detection cost is reduced.

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