RU2780856C1 - Method for welding an extended part with a base and a jig for implementing the method - Google Patents

Abstract

FIELD: welding.

SUBSTANCE: inventions group consists of a method for welding an extended part with a base and a device for its implementation and can be used in hydraulic engineering, transport and industrial civil construction in sheet pile wall structures of structures erected in various climatic regions of construction, including the construction of sea and river berths , as well as in construction when erecting retaining walls for various purposes in the ground, preferably in hard-to-reach places and regions of the Far North. In the welding process, the elongated part to be welded is used as a guide for moving the conductor with the welding head of at least one welding machine along the elongated part to create a weld. The conductor is a platform (3) mounted on wheels (4) adjustable in height. A welding machine (5) with welding heads (6) is installed on the conductor. The conductor contains orienting rods (9). For rigging work with the conductor, rigging loops (11) are provided. The execution of the conductor in the form of a moving platform allows you to move all the equipment attached to it, in a given direction. The orienting rods, installed in pairs towards each other, are designed to rest against the longitudinal sides of the extended part in order to create the necessary direction of movement of the platform.

EFFECT: possibilities of using the conductor are increased due to the presence of an adjusting displacement of the orienting rods in the vertical and horizontal directions.

10 cl, 3 dwg, 1 ex

Description

The invention relates to tubular welded sheet piles and can be used in hydraulic engineering, transport and industrial civil engineering in the construction of sheet pile walls of capital and temporary structures erected in all climatic areas of construction, including the construction of sea and river berths, as well as in construction during construction of retaining walls in the ground for various purposes, preferably in hard-to-reach places and regions of the Far North.

Welded tubular sheet piling is usually used as part of an assembly called a pipe sheet pile scheme, which is developed based on the results of preliminary geological studies carried out before construction begins. At the same time, the tubular welded piles themselves are piles, each of which consists of a pipe and a steel sheet pile welded to its outer surface with locks on free non-welded edges, through which adjacent piles are interconnected, also referred to as connectors.

Currently, welding of extended parts to a steel base, for example, a sheet pile to a pipe pile, is carried out in stationary factory conditions on special stands. The production stands at which the process of welding a sheet pile to a pipe pile takes place are given on the Internet, for example, on the page https://stroy-podskazka.ru/dom/shpunt/vse-o-truboshpuntah/ or on the page https://rtst.ru /piboshpunt/. From the photographs shown on the websites, it can be seen that the welded conductor moves along the parts to be welded using a special lifting mechanism, as an option in the form of a gantry crane, and the positioning itself is carried out by numerous optical sensors. Such a technology for welding extended parts to a steel base has significant disadvantages, since setting up and aligning optical sensors outside the shop space is difficult and very time consuming.

Another disadvantage of prefabrication of welded tubular sheet piles is the difficulty associated with the fact that it is not possible to vary the pipe sheet pile scheme developed based on the results of preliminary geological studies, since the set of welded tubular sheet piles delivered to the construction site is intended exclusively for the developed sheet pile scheme. If it is necessary to use a tubular welded sheet pile that is not included in a prefabricated set, its additional production and delivery from the manufacturer to the construction site is required, which significantly increases the logistics costs during construction.

The task set before the claimed invention is to reduce the construction time of sheet pile walls and reduce the costs associated with logistics.

At the same time, the achieved technical result is obtaining the technological possibility of manufacturing sheet piles at the construction site, including in the conditions of the Far North.

The problem is solved, and the technical result is achieved in that for welding the extended part with the base, a method is used, which consists in positioning and fixing the extended part on the base in the required position. A conductor is installed and welding is carried out by moving the installed conductor along the extended part. In this case, after fixing the extended part, the conductor with at least one welding machine is installed on the base so that the orienting rods of the conductor abut against the extended part from two opposite longitudinal sides to use the extended part as a guide. Expose the conductor with a fixed welding machine, providing the necessary positioning of the welded heads relative to the welded extended part and perform welding by moving the conductor along the extended part.

In a particular case, before welding, the welding zone is cleaned.

As an option, before welding, it is possible to warm up the welding zone.

Also, the problem is solved, and the technical result is achieved by the fact that the jig for welding an extended part with a base is a moving platform with at least one welding machine fixed on it. In this case, the platform is equipped with at least four wheels and four orienting rods installed in pairs towards each other and designed to rest against the longitudinal opposite sides of the extended part. The orienting rods have the possibility of adjusting displacement in the vertical and horizontal directions. Moreover, the welding machine has the possibility of vertical, horizontal and circular adjustment movement of the welded heads for their precise positioning relative to the welded extended part.

In a particular case, the ends of the orienting rods of the jig, abutting against the longitudinal opposite sides of the extended part, are provided with a movable element that reduces the friction force of the rods with the extended part.

As an option, the conductor can be additionally equipped with a cleaning device installed in front of the welding machine.

Also, in a particular case, the conductor can be additionally equipped with a heating device installed in front of the welding machine.

In a particular case, the conductor wheels have the ability to move vertically.

Also, in a particular case, the wheels can be driven by a propeller.

It is desirable that the conductor be equipped with a rigging loop.

The proposed method of welding an extended part with a base is easily implemented on almost any construction site, since it does not require additional sophisticated equipment. So for the location of an extended part, such as a pipe, a platform is needed, which may be located near the place of their storage. It is possible to fix an extended part, for example, by spot welding.

The use of an extended part fixed on the base in the required position as a guide allows the jig to be moved along the extended part. The presence on the conductor of at least one welding machine, fixed with the possibility of adjusting movement, allows welding of an extended part with a base. Orienting rods with which the jig is provided, resting against the extended part from two longitudinal sides, allow using the extended part as a guide.

To improve the quality of the weld, it is possible to clean the welding zone, and in the case of work in zones with low temperatures, for example, in the Far North, preheating of the welding zone is possible.

The conductor proposed in the invention makes it easy to implement a method of welding an extended part with a base.

The execution of the conductor in the form of a moving platform allows you to move all the equipment attached to it in a given direction. The orienting rods, installed in pairs towards each other, are designed to rest against the longitudinal sides of the extended part in order to create the necessary direction of movement of the platform. The possibilities of using the conductor are increased due to the presence of an adjusting displacement of the orienting rods in the vertical and horizontal directions.

For precise positioning of the welded heads relative to the extended part to be welded, they have the possibility of vertical, horizontal and circular adjustment movement.

For smooth movement of the conductor along the extended part, the ends of the orienting rods, abutting against the longitudinal sides of the extended part, are equipped with a movable element that reduces the friction force of the rods with the extended part.

To improve the quality of the weld, the conductor can be additionally equipped with a cleaning device installed in front of the welding machine. And for the possibility of using the conductor in conditions of low temperatures, for example, in the conditions of the Far North, the conductor can be additionally equipped with a heating device installed in front of the welding machine.

Equipping the platform with height-adjustable wheels allows placing the platform on pipes with different diameters, which expands the possibilities of using the jig.

It is possible to use wheels driven by a propulsion device, such as an electric motor. However, the movement of the platform can be organized in another way.

For movement and installation by hoisting mechanisms, the conductor can be equipped with a rigging loop.

Thus, all the features of the claims are aimed at achieving a technical result, which is to obtain the technological possibility of manufacturing sheet piles at the construction site, including in the conditions of the Far North.

In the following, the claimed invention is explained by a detailed description of a specific, but not limiting, present solution, an example of its implementation and the accompanying drawings, in which:

- figure 1 is a schematic representation of a variant of the conductor for implementing the method of welding an extended part with a base, front view;

- figure 2 - schematically shows the embodiment of the conductor for the implementation of the method of welding an extended part with a base, side view;

- figure 3 - a schematic representation of a variant of the conductor for implementing the method of welding an extended part with a base, rear view.

The idea of the method for welding an elongated part to a base according to the invention is to use the elongated part itself as a guide for moving the weld head of at least one welding machine along the elongated part to create a weld. The description gives an example of a method for welding a base in the form of a pipe 1 with an extended part in the form of a steel tongue 2 with locks on the free non-welded edges.

To implement the proposed method in the claimed invention, it is proposed to use a conductor, an embodiment of which is shown in the attached drawings.

The conductor shown in figure 1, figure 2 and figure 3 is installed on the surface of the pipe 1 and is a platform 3 mounted on eight wheels 4, adjustable in height. The adjustment of the wheels 4 in height allows the use of the jig when welding pipes 1 of various diameters with steel sheet pile 2.

On the conductor in the above example, two welders 5 with welded heads 6 are installed. Each welding machine is mounted on a rod 7 and equipped with a regulating unit 8, which makes it possible to adjust their position in the vertical, horizontal and circular directions.

The conductor is equipped with orienting rods 9. It is preferable that the orienting rods 9 are located in pairs opposite each other, which allows them to be most optimally installed relative to the two longitudinal walls of the steel sheet pile 2. elements 10. In a specific example, balls are used as rotating elements 10.

For rigging work with the conductor, rigging loops 11 are provided.

The conductor can be equipped with a drive for movement, powered by a mover. An electric motor located directly on the platform 3 can be used as a mover. Also, the platform 3 can be moved using a winch. There are other ways to move the platform 3.

It is also possible to use conductor structures, which provide for the installation of devices that clean the welding zone and devices that heat the welding zone, which are not shown in the drawings.

Rotating metal brushes can be used as a cleaning device for the welding zone, for example, and burners can be used as heating devices. However, these devices can be located on separate bases and used separately from the conductor intended directly for welding.

The process of welding pipe 1 with steel sheet pile 2, according to the claimed invention, is carried out as follows.

The pipe 1 is installed and fixed in such a way that the welding zone of the steel tongue 2 is located in the upper part of the pipe, preferably along the top guide.

Steel sheet pile 2 is installed in the design position on the pipe 1 and fixed on it, for example, in several places by manual spot welding.

Installed in the design position and fixed to the steel sheet 2, a conductor is installed, which has its own adjustable drive for moving along the surface of the pipe 1, and is also equipped with two welding machines 5 with welded heads 6. If necessary, the conductor can be equipped with devices for preliminary cleaning of the welding place and heating welding spots. To simplify the design, it is possible to sequentially move two or more conductors equipped with the above devices.

The conductor in the horizontal plane is centered relative to the steel tongue 2 by means of orienting rods 9 located on two longitudinal sides of the steel tongue 2, preferably opposite each other. To reduce the friction force of the orienting rods 9 on the surface of the steel tongue 2, antifriction devices, such as balls or rollers, can be installed at their ends.

Adjust the position of the wheels 4 depending on the diameter of the pipe used, as well as choosing the optimal position of the platform 3 of the conductor.

Welding machines, as well as devices for pre-cleaning the welding spot and preheating the weld spot, are installed on the platform 3 of the conductor in such a way that their own adjustment systems are fine-tuning systems, while the alignment and adjustment mechanisms of the conductor control the overall setting of the system with its preliminary setting for further fine tuning.

After installation and fixing in the design position of the steel tongue 2, installation on the pipe 1 of the conductor with a set of necessary devices, the welding process itself begins. Depending on the used welding machine 5 and design solutions, welding can be carried out both under a flux and in a shielding gas environment. The welding process itself and its characteristics correspond to the passport characteristics of the equipment used, however, the positioning of the platform 3 of the conductor relative to the parts to be welded along the horizon is carried out using orienting rods 9 located on two longitudinal sides of the steel sheet pile 2, and vertically - by the position of the wheels 4 of the adjustable drive platform 3.

The welding process is controlled by the operator, who monitors the operation parameters of the welded head 6, such as current, voltage, wire feed, etc., and the speed of movement of the platform 3 of the conductor relative to the parts to be welded, that is, the welding speed.

In the process of work, the conductor, extended parts and the steel base itself are installed with the available construction lifting mechanisms. Installation and removal of the conductor is carried out using the existing rigging loop and takes minimal time. With the parallel arrangement of welding stations, additional time savings are achieved due to the parallel execution of work, and the small weight of the conductor with the installed equipment allows the use of affordable universal lifting construction equipment.

The method proposed in the invention for welding an extended part with a base and a conductor for implementing the method, for example, for manufacturing a sheet pile, has the following advantages associated with their manufacture at the construction site:

- the process of manufacturing welded piles is simplified due to the possibility of welding in the field;

- simplifies the design pipe-and-piling scheme in comparison with those currently used, which ultimately leads to material savings;

- it becomes possible, if necessary, to manufacture and use a sheet pile wall with a reduced center-to-center distance of piles;

- increases the convenience of transporting piles, due to the increase in the loading rate of wagons, which reduces transportation costs;

- allows the use of standard piling guides.

Thus, the invention proposed in the application is new, technically feasible and has good prospects for use in the construction of sea and river piers, as well as in the construction of retaining walls for various purposes in the ground, preferably in hard-to-reach places and regions of the Far North.

Claims (10)

1. A method for welding an extended part with a base, including the location of the extended part and its fixing on the base in the required position, the installation of the conductor and the welding while moving the installed conductor along the extended part, characterized in that after fixing the extended part, the conductor with at least one welding the apparatus is installed on the base in such a way that the orienting rods of the conductor abut against the extended part from two longitudinal opposite sides to use the extended part as a guide, and the conductor with the fixed welding machine is exposed, ensuring the necessary positioning of the welding heads relative to the extended part being welded, and then welding is performed , moving the conductor along the extended part. 2. The method according to claim 1, characterized in that the welding zone is cleaned before welding. 3. The method according to claim 1, characterized in that before welding, the welding zone is heated. 4. A jig for welding an extended part with a base, made in the form of a moving platform with at least one welding machine with welding heads fixed on it, characterized in that the platform is equipped with at least four wheels and four orienting rods installed in pairs towards each other and designed to rest against the longitudinal opposite sides of the extended part, while the orienting rods are installed with the possibility of adjusting displacement in the vertical and horizontal directions, and the welding machine is fixed on the platform with the possibility of vertical, horizontal and circular adjustment movement of the welding heads for their precise positioning relative to the welded extended details. 5. The jig according to claim 4, characterized in that the ends of the orienting rods, abutting against the longitudinal sides of the extended part, are equipped with a movable element that reduces the friction force of the rods with the extended part. 6. The conductor according to claim 4, characterized in that it is additionally equipped with a cleaning device installed in front of the welding machine. 7. The conductor according to claim 4, characterized in that it is additionally equipped with a heating device installed in front of the welding machine. 8. The conductor according to claim 4, characterized in that the wheels have the ability to move vertically. 9. The conductor according to claim 4, characterized in that the wheels are driven by a propeller. 10. The conductor according to claim 4, characterized in that it is equipped with a rigging loop.

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