JPS62224008A - Connecton of resin forcement of electric apparatus tank - Google Patents

Abstract

PURPOSE:To eliminate the deformation in the direction of a welding line and simplify the deformation removal work by a method wherein two L-shaped steel members are combined, and in case of connecting them to the sidewall the three welding lines of the L-shaped steel member and connection part to the sidewall are simultaneously welded. CONSTITUTION:Rein forcing two L-shaped steel members 11, 12 are welded each other at the section C, the end corner is welded to the sidewall 1 at the welding sections a, b, and the three parts of welding sections are welded with welding torchs 14-16 at the same time. With this structure, it is not only possible to arbituraly select the most effective height of reinforcement material for the cross-sectional coeffient of the reinforcement material supporting the strength of the tank but also possible to select the direction of width and thickness of the plate out of the standardized product freely, thereby permitting the optimum design with respect to the strength of the tank. In the aspect of the work, the time spent on the welding work is the same, with the contraction of the three welding lines balancing and simplified work of eliminating deformation without deformation in the direction of welding line. Also, simplified sidewall permits the automatization of blast treatment coating.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a method for joining reinforcing materials for electrical equipment tanks.

More specifically, the present invention relates to a reinforcing material joining method for an electrical equipment tank, in which a reinforcing material made of section steel is welded to the side wall of a steel plate tank for electrical equipment such as a transformer.

[Conventional technology]

Conventionally, as reinforcing materials to be joined to the side walls of tanks such as transformers, H-shaped steel (2), single-necked steel (31, Mainly flat steel (D1 or L-shaped steel (5)), cut plates and bent reinforcing materials are welded to the side walls (C).
61 was joined.

On the other hand, future transformers and the like will require a tank design with even higher strength, and in addition, it is desired to establish an inexpensive structure and manufacturing method with good workability.

[Problem that the invention seeks to solve]

The conventional method of joining reinforcing materials for electrical equipment tanks as described above is superior in terms of section modulus in the case of H-beam steel, but because the shape is complex, it is difficult to apply surface treatments such as grid plastering or painting. Difficult to automate.

It also takes a lot of man-hours. In the case of mouth shape steel (31 or L shape steel (5).

If it is joined to the side wall (1) as shown in Figure DA (al [bl), a certain section modulus can be obtained, but surface treatment is still difficult. If it is joined to the side wall (C) as shown in Figure 5 (BL), surface treatment will be easier, but the section modulus will be inferior.

Furthermore, if a single-necked bending reinforcement material is used, any section modulus can be obtained and surface treatment can be easily performed. remains and becomes a major factor in deforming the side wall.

Furthermore, as shown in Figure 3, the welding line of the reinforcement material is centered on the side wall (C), so the section steel itself deforms in the longitudinal direction, as shown in Figure 6, and the side wall (C) also Because of the deformation, there was a problem in that it took a lot of man-hours to correct the strain on the 1llllI wall after joining the reinforcing material.

This invention was made to solve the above problems, and allows an arbitrary section modulus to be obtained.

The purpose of this invention is to obtain a method for joining reinforcing materials for electrical equipment tanks with excellent workability.

[Means for solving the problem] The method for joining reinforcing materials for electrical equipment tanks according to the present invention combines two L-shaped steel sections, which have the greatest degree of freedom among commercially available steel sections, and joins them to the side wall. In this case, the three weld lines of the L-beam joints and the joints to the side walls are simultaneously welded.

[For production]

In this invention, since the L-shaped steel pieces 3 are combined and the joints at three points are simultaneously welded, distortion due to welding is reduced.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to FIG. 7. One L-shaped 91m reinforcement (//) (/λ) is t
They are welded to each other at part e1, and the edge is attached to the side wall (the welded part fa
t (bl), but these three joints fal
fbl and fcl are simultaneously welded using a welding torch (c, (y!r>(/l,). This structure is based on the height of the reinforcing material that is most effective for the section modulus of the reinforcing material, which is the pillar of tank strength. Not only can you choose arbitrarily, but also 1
The width direction, plate thickness, etc. can be selected relatively freely from standard products, allowing for optimal tank strength design.

From the work point of view, three points can be simultaneously welded: the welds between the L-beams and the welds to the side walls, the welding time remains the same, and the welding HRd of the three welding lines is balanced7, as shown in Figure 2. As shown in , deformation in the direction of the weld line is eliminated, simplifying the strain relief work. Additionally, the surface of the side wall is simplified, making it possible to automate the blast treatment and painting, promoting rationalization in all operations from tank manufacturing to painting.In addition, if the welding groove of the fcl section is cut, ( c.
The welding heat of the l part and (alfb1 part) is well balanced, further reducing deformation.

〔Effect of the invention〕

As is clear from the above description, this invention is based on a single L
Since welding of the shaped steels to each other and welding to their side walls are performed simultaneously, deformation in the direction of the welding line is eliminated, simplifying the strain relief work. In addition, the side wall surface is simplified, making it possible to automate the blast treatment and painting, promoting rationalization of all operations from tank manufacturing to painting.

[Brief explanation of drawings]

FIG. 7 is a front view showing a welding operation for explaining one embodiment of the present invention, FIG. 2 is a partial perspective view for explaining the present invention in detail, and FIGS. 3 to 5 are conventional welding operations. FIG. 6 is a front view for explaining the reinforcing material joining method for an electric equipment tank, and FIG. 6 is a partial perspective view for explaining the problem. (c... side wall, (//) (/2)... L-shaped steel, fat
fbl [cl...Welding part. In each figure, the same reference numerals indicate the same or corresponding parts. For 1 Figure 1; Side wall 11.12: Lfi! jl a, b, c: Liaobo Fanwei 3 figure Bo 4 figure Tail 5 figure (G) (b) (C1) (b) leather 6 figure Tail 2 flash

Claims (1)

[Claims] ■Welding along the first weld line to join two L-shaped steels together to form a section; and second welding to join both ends of the section to the side wall of the tank made of steel plate. , a method for joining a reinforcing material for an electrical equipment tank, which simultaneously performs welding along a third welding line.