Internal expansion type wire clamp of switch cabinet handcart type switch loop resistance tester

The utility model discloses an internal expansion type wire clamp of a handcart type switch loop resistance tester of a switch cabinet, the middle part of a clamp body I (1) is rotatably connected with the middle part of a clamp body II (2), the clamp body I (1) and the clamp body II (2) are crossly connected to form a scissor type wire clamp body, and a wire clamp contact I (3) at one side of the clamp body I (1) and a wire clamp contact II (4) at one side of the clamp body II (2) are located at the same side. A voltage lead (5) connected with the other side of the clamp body I (1) and a current lead (6) connected with the other side of the clamp body II (2) are located on the same side, the current lead (6) and the voltage lead (5) are both connected with a test instrument, and after the clamp body I (1) and the clamp body II (2) are opened, the wire clamp contact I (3) and the wire clamp contact II (4) are in close contact with the inner wall of the switch cabinet handcart switch tulip contact. According t