Train brake pad thickness measuring instrument

A train brake pad thickness measuring instrument aims at overcoming the defect that no instrument suitable for measuring the thickness of a train brake pad at the bottom of a train exists in the prior art, and comprises a measuring part and a digital display instrument electrically connected with the measuring part, and the measuring part comprises a telescopic measuring head, a connecting rod and a handheld part; wherein one end of the connecting rod is fixedly connected with the measuring head, the other end of the connecting rod is fixedly connected with a shell of the handheld part, one end of the connecting wire is fixedly connected with the top end of the measuring head, the other end of the connecting wire is fixedly connected with a sliding block of the handheld part, and a capacitive grating sensor of the handheld part is electrically connected with the digital display instrument through an aviation plug. According to the utility model, through the combination of a mechanical structure and the capaci