Olive-shaped bidirectional tapered thread bolt and nut connection structure having large left taper and small right taper

An olive-shaped bidirectional tapered thread bolt and nut connection structure having a large left taper and a small right taper, namely, a bolt and nut connection structure of an olive-like (left taper is larger than right taper) shaped asymmetrical bidirectional tapered thread, comprising:

• an external thread (9) and an internal thread (6) which are in mutual thread fit, wherein the complete unit thread of the olive-like (left taper is larger than right taper) shaped asymmetric bidirectional tapered thread (1) is a helical olive-like (93) shaped asymmetric bidirectional tapered body which is large in the middle and small in two ends, has a left taper (95) being larger than a right taper (96) and comprises a bidirectional tapered hole (41) and/or bidirectional truncated cone body (71);
• the thread body of the internal thread (6) is presented by the helical bidirectional tapered hole (41) on the inner surface of the cylindrical body (2) and exists in a form of “non-entity space”, and the thread body of the external thread (9) is presented by the helical bidirectional truncated cone body (71) on the outer surface of the columnar body (3) and exists in a form of “material entity”;
• the left conical surface of the asymmetric bidirectional tapered body forms the left taper (95) corresponding to a first taper angle (α1), the right conical surface forms the right taper (96) corresponding to a second taper angle (α2), and the left taper (95) and the right taper (96) are opposite in direction and different in taper;
• the internal thread (6) and the external thread (9) contain cones in the tapered holes till inner and outer conical surfaces bear each other;
• the technical performance mainly depends on the conical surfaces and tapers of the mutually fit threaded bodies, preferably, 0°<first taper angle (α1)<53°, 0°<second taper angle (α2)<53°;
• for individual special fields, preferably, 53° first taper angle (α1)<180°.