Discussion on equipment lifting techniques

Techniques need to be analyzed on a case-by-case basis, but for such types of construction, compliance with standards is more important; safety is what matters most

Lifting operations must be carried out based on the specific conditions of the site and the characteristics of the object to be lifted. Generally, the first step in lifting is to determine the appropriate lifting equipment needed for the task; this involves considering the weight, shape of the object to be lifted, the lifting points, the installation location, the working height, as well as the working radius, in order to select lifting equipment with the right capacity. Additionally, lifting operations require preparation for auxiliary tasks, such as identifying the lifting points and ropes, using auxiliary equipment (such as cranes for lifting long objects), determining the route for the crane to reach the site, deciding on the appropriate placement of the lifted object, establishing signals for directing the lifting operation, and setting up barriers to ensure safety during the operation； An excellent lifting plan requires various types of calculations. As for the techniques involved in actual operation, accurate judgment and keen observation are necessary, along with good psychological resilience. It is necessary to ensure stability in the movement of the lifted load, accurate determination of distances, as well as precise understanding and execution of the signals related to lifting operations. It can’t be agreed upon just with words; continuous practice and effort are required. Last edited by bht11 on 2008-6-29 09:39.]

Lifting operations pose high requirements for the lifting of tower arrays; generally, the construction party is responsible for preparing a lifting plan that details the lifting methods to be used, the type of lifting equipment required, the conditions of the site, the area where the lifted objects will be stored, the routes that the lifting equipment will take, and the relevant standards to be followed.

Lifting techniques are a detailed and specific aspect; the original poster should narrow down the scope of the topic by specifying the conditions under which lifting will take place, such as the equipment involved, its volume and weight, the method of lifting, and the conditions at the site. Rather than having such general discussions, it would be better to discuss various lifting methods and their advantages and disadvantages.

For some tower-shaped containers that are transported as a whole, it is necessary to decide at the manufacturing site whether the top of the tower should be at the back or the front of the vehicle; otherwise, it will cause problems upon arrival at the site. Developing a lifting plan in advance can make things much easier

This morning, a piece of equipment (35 tons) was just lifted in. Initially, it was planned to have some employees from the lifting company assist with positioning it, with the labor costs to be paid later. However, the lifting company said that if they came to help with positioning, it would be considered as them installing the equipment, and they would therefore be charged according to fixed rates for installation work and labor costs, etc. It turned out to be much more expensive than the lifting cost; there were only 3 people from the manufacturer on site, which forced me to spend the whole morning looking for someone to help get it in. I didn’t realize there was such a rule before. . . Was it not standardized before?

Equipment installation should include primary and secondary grouting of the equipment – can these lifting companies handle that?

I know grouting doesn’t fall under lifting, but it is part of the installation; my previous question was a rhetorical one. My expression was unclear; please forgive me.

The last edit to this post was made by ms3210 on 2009-10-12 at 20:29. Reply to post #9: Regarding the initial grouting of the equipment foundation: Initial grouting refers to the process of filling the holes for the foot bolts after the equipment has been initially aligned and the foot bolts have been fixed, before the equipment is installed. In other words, filling those holes, as well as constructing the foundation and preparing the spaces for the foot bolts, all fall under the category of initial grouting. This process involves casting the foot bolts along with the foundation at the same time; it is therefore essential that the conditions of the foundation are very precise, otherwise problems will arise during installation； Secondary grouting refers to the process of filling the gaps between the equipment base and the foundation after the equipment has been installed in its proper position, with its center aligned correctly, and after the pipe connections have been completed. Generally, this is done by first creating a foundation with pre-drilled holes; once the equipment arrives, it is lifted onto this foundation and foot bolts are inserted. After leveling it using shims, grouting material is then used to fill the gaps. In a professional definition, grouting falls under the category of civil engineering. Hehe, I’m not sure if it was clear enough!