Self-made tension spring suitable for fish scale removing mechanism

The utility model discloses a self-made tension spring suitable for a fish scale removing mechanism. The tension spring comprises a tension spring body, a locking washer and a spline washer, the innerdiameter of a spiral ring of the tension spring body is 25-30mm; wherein a tension spring section with the spring distance of 12-15mm is arranged at one end of the tension spring body; a tension spring section with the spring distance ranging from 1 mm to 3 mm is arranged at the other end of the tension spring body, the steel wire is sleeved with a plurality of locking washers and spline washers,and the length of the tension spring section sleeved with the locking washers and the spline washers is 1/4-1/2 of the length of the tension spring body. The locking washer is an outer sawtooth locking washer, and the front faces of the locking washers arranged on the tension spring body in a sleeving mode point to the same direction and point to the end with the long spring distance. The splinetooth gasket is a saddle-sh