shackle should be smooth, no crack, sharp edges, burning and other defects.
A kind of rigging.
The domestic market commonly used shackle, according to production standards are generally divided into American Standard, GB, the standard three class; one of the most commonly used American Standard because of its small size, large weight capacity and is widely used. According to the types can be divided into G209 (BW), G210 (DW), G2130 (BX), G2150 (DX). According to the type can be divided into the bow type (OMEGA bow shaped) with female shackle and D type (U type or D type straight type) with female shackles; by the use of places can be divided into the boat and land two. The safety coefficient is 4 times, 5 times, 6 times, even 8 times (such as the Swedish GUNNEBO super shackle). Its material, common carbon steel, alloy steel, stainless steel, high strength steel, etc.. Surface treatment is divided into galvanized (hot plating and electroplating, painting, plating dacrome) (Dacormet).
The common market American Standard shackle the specifications for the 0.33T, 0.5T, 0.75T, 1T, 1.5T, 2T, 3.25T, 4.75T, 6.5T, 8.5T, 9.5T, 12T, 13.5T, 17T, 25T, 35T, 55T, 85T, 120T, 150T.
Shackle is widely used in electric power, metallurgy, petroleum, chemical, machinery, railways, ports, mines, construction and other industries.
1, shackle should be smooth, no crack, sharp edges, burning and other defects.
2, prohibited the use of cast iron or steel shackle. Button body can be made of steel, forging, shaft pin can be processed after forging.
3, should not be in the shackle drilling or welding repair. The body and the shaft pin must be permanently repaired.
4, use, should check the button body and bolt, not serious wear, deformation and fatigue crack.
5, the use of horizontal spacing shall not be subject to tension, shaft pin must be inserted pin.
6, after the correct assembly of the shaft pin, buckle body width shall not be significantly reduced, good thread connection.
7, shackle shall not exceed the safe load specified.
1, should be smooth, no cracks, sharp edges and over burning defects, such as the use of a magnifying glass can be used to detect suspicious areas.
2, to two times the safe load as the shackle test load test. The shaft pin shall not have permanent deformation, and can rotate freely after loosening. The length of the buckle body shall not exceed O.25% or O.5mm. 300 tons less than 2 times the safe load as the test load for the test, more than 300 tons of safety load for the test load of 1.33 times
3, shackle may sample reliability test. Load is two times the test load. No deformation fracture or shackle shackle loss of bearing capacity.
4, the safety load of shackle by M (4) level approval.
5, in the body should be marked on the strength level, safety load and other markers.
1, there is obvious permanent deformation or shaft pin can not rotate freely.
2, the buckle body and the shaft pin any section of the wear amount of 10% of the original size.
Crack 3, shackle any.
4, can not lock shackle.
5, after the test of unqualified shackle.