Insulator

And an insulator. The wire clamping device mainly solves the problem that a wire clamping device of an existing insulator is difficult to clamp when clamping the wire. The wire clamping device is characterized in that the wire clamping device comprises a bottom plate (31), a lower clamping plate (32), a middle plate (33), an upper clamping plate (34) and a top cover (35) which are sequentially arranged from bottom to top, the bottom plate is connected with the rod body, and the wire clamping device further comprises a fastener (5) which sequentially penetrates through the top cover (35), the upper clamping plate (34), the middle plate (33), the lower clamping plate (32) and the bottom plate (31) to be connected with the rod body. A first wire clamping groove (41) is formed between the bottom plate and the lower clamping plate, a second wire clamping groove (42) is formed between the upper clamping plate and the top cover, the upper end face of the middle plate is matched with the inclined face of the upper cl