Several methods of sling used correctly
Rigging used very frequently, Qingdao cargo hook production here small make up today
1, sling specifications, types of choice When choosing a sling specifications, must take the lifting load of size, weight, shape, and prepare lifting methods such as the use of common influence coefficient into consideration, given the limits of the requirements of the work force, the work environment at the same time, the kinds of load must be considered. Must choose to have enough ability, and can satisfy the use of appropriate length of the sling, if more than one sling is used at the same time lifting load, must choose the same type of sling; The raw material of flat sling cannot be affected by the environment or load. Whether attachment or soft lug need, must be considered the end of the sling and auxiliary accessories and lifting equipment matching.
2, sling the restrictions on the use of point of view When using soft lug flat sling, minimum use of lug length cannot be less than 3.5 times the maximum thickness, and lug contact part of the hook and lug Angle should not exceed 20 °. When the connection with soft lug slings and lifting equipment, slings and lifting gear contact part must be always, unless the axial line width is not more than 75 mm, lifting accessories bending radius must be at least 0.75 times of the width of the sling axial. For example: sling on cargo hook at least 0.75 times of the radius of the sling axial width. Fabric width may be affected by cargo hook part inside radius, cargo hook curvature results the influence of block strength in the range of the width of the fabric a balanced role. Coefficient of sling it is strictly prohibited to overload, it is necessary to use the right way, the way of part of the limit of the work force may have been given on the label, multiple sling cannot exceed Angle and vertical direction.
3, follow the good assembly experience Before starting lifting plan for lifting and handy operation scheme.
4, hoisting, the correct way of using sling connections Sling under the safe way to correct placement, connected load, must put a sling on the load to load can balance the role of the width of the sling; Always cant knot or distorted sling suture placed on a hook or lifting equipment, and is always in the vertical section of the sling, by far away from load, Angle of the hook and lock to prevent damage to the tags.
5, the use of multiple combination sling matters needing attention Multiple sling evaluation depends on the combination of the limit of the work force of load on the sling symmetry, namely when lifting sling branch according to the design of uniform distribution is symmetrical, the same vertical Angle. 3 composite sling, if branch cannot according to the stress of the uniform design, the biggest strength on a branch, it will be near branch the sum of maximum tolerance design Angle, the same result in 4 composite sling, if not rigid load, takes into account the same. Note: for the rigid load, the majority of gravity may be three teams, or even two, that only protect the rest of the balance of the load
6, hoisting, the protection of the sling sling away from sharp edges, the friction and wear, whether its far away from the load or lifting appliances, should strengthen and protect the cable from the sharp edge and wear appropriate part of the damage, the necessary additional strengthening protection supplement is a must.
