1, sling specification, type selection when selecting sling specifications, must be the load size, weight, shape coefficient and lifting, jointly prepared by the lifting method is used in the calculation formula of ultimate stress, work requirements, at the same time, type of work environment, the load must be consider. Must choose not only has enough ability, and can meet the use of appropriate length of sling mode, if multiple sling hoisting load be used at the same time, must use the same type of sling; flat sling materials is not affected by environmental or load effects. No matter whether attachment or soft ear, careful consideration should be given to the terminal and rigging accessories and lifting equipment matching.

2, the restriction of the use of perspective of sling when using flat sling soft lug, minimal use of ear length and ear cannot be less than 3.5 times the maximum thickness of the contact part of the hook, and lug angle can not exceed 20 DEG activities. When the connection with soft ear slings and lifting appliances and lifting gear, sling contact portion must be kept, unless the axial width of no more than 75mm from the sling, bending radius of re attachment must be at least 0.75 times the width of the cable axial. For example, the width of sling in a cargo hook on the radius of at least 0.75 times the width of the fabric slings axial. Perhaps influenced by the hook inside radius, the curvature of the block hook effect results in the width of the fabric strength range of equilibrium function. Sling overloading is strictly prohibited, must use the coefficient of the right way, a part of extreme work force may have given on the label, multiple cable can not exceed the maximum angle and vertical direction.

3, follow the installation experience good plan lifting and portable operation scheme in the beginning before hoisting.

4, lifting, the correct use of rigging rigging in the way of security connection correct placement, connected with the load, should be placed in the sling load to load balance can sling width; always not kink or twist the sling suture site cannot be placed on a hook or a hoisting equipment, and always put in the vertical part of hangers, to prevent damage from the label by load, the hook and the locking angle.

Symmetry is evaluated using 5, multiple combinations of rigging note multiple slings limit work force depends on the combination of sling load, when the lifting sling, the branch is designed according to the uniform distribution, with the same vertical angle. 3 combined sling, if not to force branch of uniform design, the maximum strength in a branch, it is the sum of maximum force near the design angle of branch, and also in the 4 combination sling, if not a rigid load, the same account. Note: for the rigid load, the majority of gravity may be 3 of them, or even the 2 supporting arm, remaining the only protect the load balance

6, lifting slings sling, protection from sharp edges, friction and wear, whether it is from the load and lifting appliances, should strengthen the protection of the right part of the sling and without sharp edges and wear damage, strengthen the protection of the necessary additional is required.

7, to ensure that the crane, load balance in the lifting process, must use the safe way to use a sling, can not let the load skew or falling from the sling; must be arranged in the center of gravity and sling load hoisting point directly above, make the load balance and stability, if the load is not focused on lifting points under the sling in the movement of may cross key. Cause danger.

8, the lifting sling if using a basket hanging, can guarantee the safe load, because there is no lock locking behavior such as lifting slings, and can flip through the key recommendation two slings are used together, the sling body suspension as far as possible to ensure that the vertical load in the branch of the equal sharing of. When the flat cable lock hanging, should be allowed to put natural angle (120 degrees) of the state, so as to avoid the friction produces heat, neither by strong force in hanger position, clip mouth is not trying to build a tight security, the correct way of using a double lock lifting slings. Double lock to ensure safety and prevention of crane load falling from a sling.

9, to ensure the safety of personnel in the lifting process, pay close attention to ensure the safety of personnel, must warn in dangerous state personnel, if necessary, to immediately withdraw from the danger area. The other hands or body parts must be far away from the sling, prevent the damage sling relaxation.

10, in the lifting process, must use the way of lifting the lifting must be exemplary demonstration, slings from relaxation to pick up until the cable tension, the load has been raised to a predetermined position, it is particularly important in the tight basket hanging or free friction load.

11, to control the load rotation if the load tends to tilt, must put the lifting load, to ensure that the constraints, to prevent accidental load rotation is guaranteed.

12, to avoid the collision, pull, pull the rigging, friction, vibration, prevent the damage in the hoisting rigging, care must be taken to ensure that the load is restricted, to prevent accidental overturning or other object collision. To avoid drag, pull or oscillating load, if that will increase the stress of the rigging. If the sling load to bear, or load on the pressure in the rigging, not drag sling on the surface of the ground or rough.

13, rigging landing when lifting, the load will be landing in equality constraints.

14, the proper storage of sling sling hoisting operation when completed, must be put back, correct storage; if no longer in use, must be stored in a clean, ventilated, dry suspension under room temperature, good, and placed on the shelf, away from heat, gas, chemical erosion appearance, sunlight or other strong ultraviolet radiation. Give priority to the use of storage items, should any damage occurs in the use process check sling, sling is not damaged in storage. When the lifting sling is the pollution, acid and alkali, diluted with water or with the corresponding prior recommended storage media to neutralize. On the basis of lifting sling material and chemical properties of reference, from the supplier's recommendation, already used no problem products may be necessary. Sling is in use or the wet, clean, will be hung up to dry.