Best quality Round Head Bolt - Galvanizing, hoisting, shackle – Qiongyue

products description

The national standard shackles include general lifting shackles, marine shackles and ordinary shackles. Due to its heavy weight and large volume, it is generally not installed in the position that is not removed frequently. When selecting shackles, pay attention to the safety factor, which is generally 4 times, 6 times and 8 times. The rated load must be strictly observed when the shackle is used. Excessive and frequent use and overload use are not allowed.

Extended data

Shackle characteristics
1. Shackles shall be smooth and flat without cracks, sharp edges, overburning and other defects.
2. Cast iron or cast steel shackles are strictly prohibited. The buckle body can be forged with killed steel, and the shaft pin can be machined after bar forging.
3. Shackles shall not be drilled or repaired by welding. After permanent deformation of buckle body and axle pin, they shall not be repaired.
4. During use, the buckle and latch shall be checked to avoid serious wear, deformation and fatigue cracks.
5. When in use, the horizontal spacing shall not be subject to tension, and the axle pin must be inserted with a safety pin.
6. After the shaft pin is correctly assembled, the width of the buckle body shall not be significantly reduced, and the thread connection shall be good.

The common American standard shackles in the market are 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.

A kind of rigging. The 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; The American Standard is the most commonly used because of its small size and large bearing capacity. It can be divided into G209 (BW), G210 (DW), G2130 (BX), G2150 (DX) by category According to the type, it can be divided into bow type (Omega type) bow type shackle with female and D type (U type or straight type) D-type shackle with female; It can be divided into marine and land use according to the place of use. The safety factor is 4 times, 5 times, 6 times, or even 8 times (such as Sweden GUNNEBO super shackle). The common materials are carbon steel, alloy steel, stainless steel, high-strength steel, etc.

The shackles for lifting and reuse manufactured according to national standards are called national standard shackles. The rated load must be strictly observed when the shackle is used. Excessive and frequent use and overload use are not allowed. The operator shall be specially reminded not to stand under the lifting machinery and lifting appliances during the lifting process. The common national standard shackle specifications on the market are 3T 5T 8T 10T 15T 20T 25T 30T 40T 50T 60T 80T 100T 120T 150T 200T, a total of 16 specifications

Shackles are widely used in electric power, metallurgy, petroleum, machinery, railway, chemical industry, port, mining, construction and other industries.

Shackle scrapping standard

1. There is obvious permanent deformation or the axle pin cannot rotate freely.
2. The wear amount of any section of the buckle and the axle pin reaches more than 10% of the original size.
3. Cracks appear at any part of the shackle.
4. Shackles cannot be locked.
5. Unqualified after shackle test.
6. If the shackle body and shaft pin are corroded or rusted in a large area, they should be scrapped immediately.

Main purpose and scope of application of shackle
1. Shackles can be used for rigging end fittings, which can be directly connected with the object to be lifted during lifting operations.
2. Shackles can be used between rigging and end fittings for connection only.
3. When the rigging is used together with the beam, shackles can be used to connect the rigging with the padeye at the lower part of the beam instead of the lifting ring, which is convenient for installation and disassembly.