Specification for safe use of shackles:

1. Operators can only use shackles after receiving relevant training.

2. Before operation, check whether all shackle models match and whether the connection is firm and reliable.

3. It is forbidden to use bolts or metal rods instead of nut pins.

4. The lifting process shall be as stable as possible, and no large impact and collision are allowed.

5. Check that the pin shaft thread can rotate flexibly in the lifting hole, and there is no jamming.

6. The shackle body cannot bear the transverse bending moment, that is, the bearing capacity should be in the body plane.

7. When the bearing capacity in the body plane has different angles, the working load of the shackle is also adjusted.

8. The included angle between the two legs of the shackle shall not be greater than 120 °.

9. The shackle should correctly support the load, that is, the force should be along the axis of the centerline of the shackle. Avoid bending, unstable load, and overload.

10. Avoid eccentric load of shackles.

11. According to the frequency of use and the severity of working conditions, a reasonable periodic inspection should be determined. The periodic inspection period should not be less than half a year and not longer than one year, and inspection records should be made.

12. When the shackle is used together with the wire rope rigging as a binding rigging, the transverse pin part of the shackle should be connected with the eyelet of the wire rope rigging to avoid friction between the wire rope and the shackle when the rigging is lifted, causing the transverse pin to rotate and causing the transverse pin to disengage from the buckle body.

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