crane Equipment displacement Determination of lifting point position: lifting point refers to the position where slings are hung or tied when lifting goods. The location of lifting points is mainly determined according to the nature, specification, weight and center of gravity of the goods. If there are hooks or rings on the goods or on the package, it means that the lifting point has been determined. During hoisting, ropes can only be hung at the hooks or rings. If the goods are printed with the sign of "Lift from here", the lifting position shall be marked. During lifting, only ropes are allowed to be hung at the sign; For goods without hanging marks, the lifting point position shall be calculated according to the center of gravity of the goods. below Huai'an Crane Rental Company Let's get to know!
1、 The calculation method of lifting point position is as follows:
1. Calculation method of one lifting point position: crane During the hoisting operation, the hoisting method must be used to hang the rope or adjust the position of the goods, that is, there is only one lifting point for the goods. In general, the distance between the lifting point and the lifting end is 0.3L (L here represents the length of the goods, and the symbol letter is used below). During actual operation, due to the limitations of the site and goods stacking, the location of lifting points shall be determined based on the fact that goods and lifting ropes can be fastened without falling off. Ensure safety when hanging.
2. Calculation method of two lifting points: Huai'an crane In the operation of leasing, in order to ensure the balance of goods, the two-point lifting method is often used. Generally, the distance between the two lifting points and the two ends of the goods is 0.21l. In actual operation, when determining the position of the lifting point of extra long goods, the horizontal included angle between the lifting point and the object to be lifted shall not be less than 45 degrees, so as to avoid rope breaking or goods damage accidents.
3. Calculation method of three lifting points: for goods with extra length or under weight, to avoid deformation or rope breakage during lifting, three lifting points are often used to hang steel wire ropes. Generally, the distance between the lifting points at both ends and the lifting end is 0.13l, and the third lifting point is the center of gravity of the lifted object. Generally speaking, the center of gravity of the lifted object is the position of the middle lifting point. In the actual operation process, when selecting the lifting rope, it should be noted that the length of the lifting rope at both ends is the same, and the lifting rope in the middle is slightly shorter to ensure that the lifting rope is evenly stressed, and the goods are stable in the lifting process.
4. Calculation method of four lifting points: for special goods, four lifting points shall be selected to hang ropes to ensure stress balance during lifting. Generally, the lifting points at both ends are 0.095l, and then the distance between the two lifting points is divided into two lifting points.
