C-shaped contact rail intermediate joint

A C-shaped contact rail intermediate joint comprises an inner clamping plate (1), an outer clamping plate (2) and a connecting bolt (3). The cross section of the inner clamping plate (1) is in a T shape matched with an inner cavity of a C-shaped contact rail (4), the inner clamping plate (1) is embedded in the inner cavity on the two sides of a connector of the adjacent C-shaped contact rail (4), the outer clamping plate (2) is arranged on one side of the rail bottom of the C-shaped contact rail (4) and penetrates through the outer clamping plate (2) through the connecting bolt (3) to be connected with the inner clamping plate (1), and the adjacent C-shaped contact rail (4) is fixedly connected together. According to the utility model, the ribs are arranged on the joint surface of the outer clamping plate or the inner clamping plate, so that the intermediate joint and the contact rail form linear contact, and the phenomenon of virtual connection of electricity caused by poor contact due to uneven joint surfac