RU1805198C - Method of mounting cylindrical structure on foundation - Google Patents

Abstract

The invention relates to the mine technique. also cylindrical structures such as pipes inside the frame with platforms. The invention solves the problem of simplifying and increasing installation security. Before the lifting of the sections, a frame with platforms is installed coaxially with the foundation. A lifting device is installed in the upper part of the frame. Using the last section, one by one, starting from the top, is lifted inside the frame and installed. them to the respective sites by means of temporary supports, which consist of support posts and beams. The last install the lower section directly on the foundation. Then the sections that are installed on the platforms, in turn, starting from the bottom, are removed from the corresponding sites using the same lifting means and lowered through the central openings in these areas to the lower sections. The sections thus mounted on top of each other are interconnected. 4 ill. Yo

Description

The invention relates to techniques for mounting cylindrical structures such as pipes on a foundation inside a frame with service areas.

The purpose of the invention is to simplify and increase installation security.

In FIG. 1 shows a diagram of the lifting of the upper (first) section of the frame; in FIG. 2 - all operations of a cylindrical structure, installed on the corresponding platform pads by means of temporary supports; in FIG. 3 is a diagram of a section sling; in FIG. 4 - frame platform with temporary supports (in plan).

The method of mounting a cylindrical structure on a foundation is as follows.

Initially aligned with foundation 1

frame 2 is vertically mounted with vertically numbered

platforms 3 for servicing the cylindrical structure during its further operation. Then, in the upper part of the frame 2, two mounting beams 4 are installed with four tap-off units 5 fixed to them. In this case, on each beam 4, one of the tap-off units 5 is fixed in the middle part. the specified beam, and the other at its end. Ropes b from two electric winchs are passed through blocks 5. Temporary supports are installed on platforms 3 of the frame 2, which consist of two support posts 8 and two support beams 9 located on them. Initially, the beams 9 are not located on the posts 8, but next to them directly on the platforms 3 so that these beams do not cover the central openings available in the platforms 3 10. The height of the indicated supports from platform to platform is different and

00

about eating

u with

increases from the lower platform to the upper one by a constant value equal to the mounting gap between the sections mounted on the supports.

Then, under the opening of the frame 2, the upper section 11 is fed to the foundation 1, which is pulled by ropes 6 from the electric hoists 7 and lifted through the openings 10 of the platforms 3 above the support posts 8 installed on the upper platform 3. After that, under the upper sections 11 (solid line in FIG. 1) the supporting beams 9 are brought in, which are laid on the supporting posts 8 so as to overlap the opening 10 of the upper platform 3, after which the section 11 is lowered onto the beams 3. Thus, all the other cylinder sections cal structure, except for the bottom 12. The bottom section 12 is set in the last instance directly on the foundation 1 and is secured to this base. Then, using the same lifting mechanism (beams 4 with winches 7), the sections installed on the platforms are alternately removed, starting from the bottom 13, from temporary supports (i.e., they are slightly lifted), the support beams 9 are removed, releasing the opening 10 of the corresponding platform, and lower each mounted section onto the downstream section, which are interconnected by welding or bolts.

In the described method, only one section is lifted at a time, and not the entire column. As a result, the load on the section housing from is significantly reduced. slings, as well as reduced load on the lifting means and the frame, which simplifies installation and increases its safety. These loads are reduced as many times as there are sections in the cylindrical structure.

Claims (1)

The formula has also been invented. A method of mounting a cylindrical structure on a foundation, including installing the frame for the dimensions of the structure being built, installing it in the upper part of the elevator frame, by which it is then lifted one by one, starting from the upper section of the structure above their design position, and after installing the lower section in the design position carry out one by one, starting from the second section from the bottom, setting all other sections to the design position by lowering them on the corresponding lower sections, characterized in that, in order to simplify and increase the safety of installation, horizontal platforms are pre-installed on the frame maintenance with central openings exceeding the transverse dimension of the sections, and the subsequent lifting of each section is carried out through the indicated openings of the service platforms above the corresponding platform, the opening of which is then blocked by support beams, onto which this design is then lowered, and each section is installed in the design position by lower it same. a hoist through the opening of the corresponding service platform, which is previously freed from said support beams. . FIG. 4