SU588091A1 - Plant for welding cylindrical articles - Google Patents

Description

(54) INSTALLATION FOR WELDING CYLINDRICAL

PRODUCTS

one

The invention relates to the field of automatic welding of swivel joints of long cylindrical products in field conditions, mainly of pipe sections, during the construction of trunk pipelines.

A known installation for welding main pipelines, comprising a device for transporting the product to the welding position, a device for unloading the product, rollers, and cabs to protect the workplace and welding equipment mounted on the turn brackets with the possibility of lifting 1.

The disadvantage of this installation is low productivity due to the need to lift all the cabs over the workplace during transverse transportation of the product to the working position, while the installation does not provide welding of products from pipes of different lengths, since the protective cabins do not move along the product.

The closest to the proposed invention to the technical essence and the achieved result is an installation containing a device for transporting the product to the welding position, a device for unloading the product, rollers, racks with a cable, on which, by means of supporting blocks, cabs are mounted to protect the workplace and welding equipment movable along the product and made in the form of walls and roofs 2.

The disadvantage of this installation is low productivity due to the need for idle movements of the cabin along the product beyond the zone of transportation of the product during its transverse transportation to the working position.

In order to increase productivity by eliminating idle movements of the cabs, the walls of each cabin are made in the form of two rigid lifting frames, hinged on the roof and covered with elastic material, while the roof of the cabin is mounted on the roof, the cable ends of which are fixed on the framework, and the supporting rollers of the cabin are adjustable in the vertical direction.

FIG. 1 shows the proposed installation, general view; on fit. 2 - the same, top view; in fig. 3 is a section A-A in FIG. one.

Claims (2)

The installation includes a device 1 for transporting pipe sections 2 to the position of welding and unloading finished products from it, driving 3 and non-driving 4 roller supports, welding machines 5 and cab 6 to protect the workplace of the welder AND welding equipment. The cabs are suspended on cables 7, tensioned between racks 8 and 9. One end of the torsy is fixed without moving beyond the bracket 10 on the rack 9, and the other end, passing through the blocks 11 on the rack 8 and blocks 12 on the rack 9, is fixed on the tension device 13 (for example, a tension screw, as shown in Fig. 1, or a winch, manual or mechanical). Cables 14, welding machines supplying welding current and auxiliary mechanisms located in cabs, are also suspended to these cables. The cabin has a rigid supporting frame of the roof 15, sewn with metal sheet 16, and side walls made in the form. the two frames 17 and 18 attached to the roof frame by hinges 19. The frames 17 and 18 can be lifted with the help of cables 20 and lifting mechanism 21, which makes it possible to freely feed the pipe sections to the welding position and unload them with their cross section transported. Frames 17 and 18 are covered with elastic material 22. In the flat position, the frames rest on fixed pads 23, located below the plane 24, which have been transnorted into tube sections, giving rigidity to the elastic walls of the cabin, which is especially important when working in windy weather. The platforms 23 serving as the cabin floor are at one end supported on the frame 25 of the installation, and the other end is supported by height-adjustable supports 26. The cabin is suspended on the cables by means of support rollers 27 fixed to the roof frame, which can be adjusted in the vertical direction on inclined cables. Welding machine 5 using cables 28 and. lift mechanism 29 can be lowered onto the pipe at the time of welding and raised when loading or unloading the pipe. The installation works as follows. Before rolling the first pipe section, the frame of the side walls of the 17 cabs and the welding machines are raised. Using the lever system of the device I, a single pipe section is cut off from the battery sections and placed on rollers 3 and 4. The lifting mechanism 21 of the frames 17 is turned on, which by means of the cable 20 lowers the frames on the fixed platforms 23, while the walls of the cabin form a rigid frame. Includes a double boom mechanism 29 and lowers the welding machines to the section to be welded. Then the section is turned on and the welding is produced. At the end of the welding frame 18 with a lifting mechanism 21 is raised to the extreme position. Welding machines also raise to the top position. The welded pipe section is unloaded by the transport unit from the welding position, freeing up the space of the next section. In this case, the frames 17 are raised to the upper position. The installation is ready for the next section. The use of this plant improves labor productivity by reducing the cost of auxiliary operations through the use of a cabin with lifting walls and by depleting the possibility of simultaneous welding of several joints of pipe sections. In addition, the installation improves working conditions, thanks to the possibility of organizing work at any time of the year and in any weather. Tests have shown reliability and good performance of the installation. Claims An installation for welding cylindrical products, comprising a device mounted on the base for transporting the product to the welding position, the device for. unloading of the product, rollers, racks with a cable on which cabins are mounted by means of supporting blocks to protect the workplace and welding equipment mounted for movement along the product and made in the form of walls and roof, characterized in that by eliminating idle movements of the cabs, the walls of each cab are made in the form of two rigid lifting frames, hinged on the roof and covered with elastic material, while the cable lead is mounted on the roof At the bottom of the cabin wall, the ends: the cable of which is fixed on the framework, and the supporting rollers of the cabin are made adjustable in the vertical direction. Sources of information taken into account in the examination 1. A. Falkievich “Welding of main and factory pipelines, M .., 1962, p. 126, FIG. 74. 2. Certificate of author No. 368959, cl. In 23K 37/02, 1970. -four ici