Dyneema rope traction lock and traction method thereof

The invention discloses a dyneema rope traction lock which comprises bolts, hanging plates, a limiting shell and a self-locking plate. The limiting shell is of a hollow trapezoidal tubular structure. A trapezoidal through hole is coaxially formed between the long bottom edge and the short bottom edge of the trapezoidal tubular structure. The self-locking plate is installed in the limiting shell. The self-locking plate is composed of a trapezoidal plate and a semi-arc plate. The trapezoidal plate and the trapezoidal through hole are coaxially arranged and scaled down at the same proportion. The semi-arc plate is manufactured on the long bottom edge of the trapezoidal plate. The diameter of the semi-arc plate coincides with the long bottom edge of the trapezoidal plate. The trapezoidal plate is embedded into the trapezoidal through hole, and the semi-arc plate extends out of the long bottom edge of the limiting shell. The front and rear end faces of the long bottom edge of the limiting shell are extended to be provided with the hanging plates. The bolts penetrate trough the middles of the hanging plates on the front and rear end faces. In the operation process, the end of a dyneema rope penetrates into the trapezoidal through hole in the limiting shell from the short bottom edge on one side of the self-locking plate, wounds around the self-locking plate, and then penetrates out of the short bottom edge on the other side of the self-locking plate, the self-locking plate transversely squeezes the limiting shell under the effect of traction force, and therefore the dyneema rope on the two sides is squeezed.