Bow shackle is a kind of connecting part used for hoisting and traction. Because its shape is similar to bow and arrow, it is called bow shackle. Bow shackle is also often called: Horseshoe shackle or B shackle.
The bow shackles commonly used in the domestic market are generally divided into three categories according to the production standards: national standard, American Standard and Japanese standard; according to the type, they can be divided into bow type female free shackle (omega type) and bow type female shackle with belt. According to the place of use, it can be divided into ship use and land use. The safety factor is 4 times, 5 times and 6 times. The common materials are carbon steel, alloy steel, stainless steel, high-strength steel, etc. Surface treatment is generally divided into galvanized (hot plating and electroplating).
Connecting ring, also known as shackle, is a common connecting equipment in mechanical engineering. The common shackles in engineering include European large bow shackle, European large Dee shackle, round head shackle, square head shackle, D-shaped shackle, etc. In the rescue operation, shackle is usually called connecting ring, which is the necessary connecting equipment between steel wire ropes, between steel wire ropes and car body, between steel wire ropes and pulleys, between rigid traction frame and car body. According to different purposes, the form of connecting ring is also different. Commonly used are D-shaped connecting ring, double D-shaped connecting ring, connecting sleeve, etc. In addition, connecting ring also refers to a part of fishing tackle, which is a very small metal ring connecting brain line and main line.
There are many kinds of shackles. According to the shape of the bent ring, there are two types: straight ring D-shaped and horse shoe shaped (bow shaped); according to the connection form of the pin and the bent ring, there are two types: screw type and movable pin type.
The pin and bent ring of screw shackle are connected by thread. There are two kinds of pins for the loose pin type shackle, i.e. round and oval. It is in smooth contact with the curved ring hole and can be directly drawn out.
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