SU937684A1 - Method and apparatus for erecting a mast - Google Patents

Description

one

The invention relates to the construction, namely to the supporting structures of the antenna structures, and can be used as a support for the illuminator, etc. devices.

There is a known method of mounting a mast consisting of separate sections interconnected by raising each subsequent section, placing it on the previously mounted one and connecting them together 1.

The disadvantage of this method. is that the installation must be carried out using a crane whose height is greater than the height of the mast being constructed, i.e. mast height is limited by crane height.

The closest to the proposed technical essence and the achieved result is a method of mounting the mast, including mounting the lower sections to the foundation, mounting the subsequent sections by alternately lifting each of them using the mounting device installed on the previously mounted section and mounting the mounting device in a vertical direction. .v on previously mounted sections with the subsequent connection of the sections among themselves.

The method is carried out by a mounting device including a frame with a hinged axis of attachment to a previously mounted section and a winch for raising sections and rotating the base in the vertical plane 2.

However, the known method requires rearranging the mounting device on

Q reassembled section after it is fixed to the previous one. Because of this, the installation of the mast in a known manner is complicated and time-consuming, which negatively affects the labor productivity in the construction of the mast.

15 The purpose of the invention is to simplify installation and increase productive labor. This goal is achieved by the fact that, according to the method of mounting the mast, including the installation on the foundation of the lower sections, the installation

Claims (2)

20 subsequent sections by alternately lifting each of them using a mounting device pre-installed on a previously mounted section and installing a mounting device in a vertical plane onto previously mounted sections followed by connecting the sections together, lifting each mounted section with the base upwards, which is aligned with the level of the upper end of the previously mounted section, fix the mounted section in the mounting device, and then rotate the mounting device in together with the mounted section and set it to a previously mounted. This method can be implemented with a device that includes a frame with a hinged axis attached to a previously mounted section and a winch for raising sections and rotating the base in a vertical plane, the base being made as a truss with rounded ends and provided with distances equal to the height of the sections, two mounting platforms, on each of which a winch is mounted for raising sections. FIG. 1 shows the installation stages of the mast; in fig. 2 - mounting fixture. On the prepared foundation using a self-propelled mounting crane install sections 1.-3 fastened together. With this crane, the mounting device is pivotally fixed to section 3, with which further 4, 5, etc. are mounted. sections. The mounting device includes a frame and a hoist for lifting sections 6 and 7 and turning the base 8 in a vertical plane. The frame is a spatial truss, made in the form of two flat frames 9 rigidly fastened among themselves, located one relative to another at a distance equal to the width of the section. On each frame 9 at a distance equal to the height of the section, mounting platforms 10 and 11 are installed with barriers 12 and 13. At each of the platforms, winches are rigidly fixed to lift sections 6 and 7. The ends 14-17 of frames 11 are rounded. At the perimeter of the frame 9, a rim with a groove 18 is mounted under the cable 19 of the winch turning the base 8. At the level of installation sites 10 and 11, rails 20 and 21 are mounted for a hinge joint using bolt 22 with corresponding lugs 23 in sections 1-3 n, etc. . The method of mounting the mast is as follows. After mounting the sections 1-3 on the foundation and hinging the frame of the mounting device to section 3, the bolt 22 is used to lift the winch 6 of section 4 with the base up to the level that the base is aligned with the level of the upper end of the previously mounted section and fixed They are her in a mounting device. Rotating the drum of the winch 8 through the cable 19 rotate the frame 180 ° relative to the bolt 22. Then the mounted section 4 is rigidly connected to the previously mounted section 3. Then the frame is fixed with the help of the bolt 22 by the lugs of section 4 and the winch 7 lifts the next section 5. Further, all operations are repeated. Using the proposed method of mounting the mast and the device for its implementation will simplify the installation and disassembly of the mast. When mounting the mast in comparison with the known methods, the number of installation work at height is significantly reduced, the number of special equipment is reduced, which will allow to increase labor productivity in the construction of fast-deployed masts. Claim 1. The method of mounting the mast, including installation on the foundation of the lower sections, the installation of subsequent sections by alternately lifting each of them using a mounting device pre-installed on a previously mounted section and installing a mounting device by rotating in a vertical plane onto previously mounted sections and then connecting sections among themselves, characterized in that, in order to simplify installation and increase productivity, each section being mounted is lifted about Considerations up, which is aligned with the level of the upper end section previously mounted, is secured section mounted in the mounting device, the mounting device is then rotated together with the mounted section and set it to a previously mounted. 2. A device for mounting a mast, including a base with a hinged axis of attachment to a previously mounted section and a winch for raising sections and rotating the base in a vertical plane, characterized in that the base is made in the form of a spatial truss with rounded ends and fitted with spaced, equal to the height of the sections, two installation sites, each of which is mounted a winch for lifting sections. Sources of information taken into account in the examination 1. B.Vroverman G. B. Construction of tower and tower structures. M., stroiizdat, 1970, p. 92, fig. 24 2. Handbook fitter steel structures. M., stroiizdat, 1948, p. 546. "about "41 Zl /// 15 J9 X Fig2