JPH0810945A - Welded structure of girder member - Google Patents

Abstract

PURPOSE:To weld a pair of girders so as to correctly arrange lower flanges. CONSTITUTION:U-shaped notched parts 14a, 14b extending inward from the joined end surface K of a web 11 are formed on the web 11 of girder members 10a, 10b, and a strip-shaped plate 16 for joining is fitted in these notched parts 14a, 14b. When the respective girder members 10a, 10b arc welded, lower flanges 13 of the respective girder members 10a, 10b are arranged first, and the outer peripheral edge part of the plate 16 for joining is welded on each side of the web 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welded joint structure of garter materials.

[0002]

2. Description of the Related Art FIG. 3 and FIG. 4 show a conventionally used garter material 1 for a crane. As shown in FIG. 4, the wheel 3 of the trolley 2 is rolled on the lower flange 4 of the garter material 1 and thus the lower flange 4 of the garter material 1.
Serves as a rail for the wheels 3 of the trolley 2. This garter material 1 is spliced if necessary, and FIG. 3 shows a pair of garter materials 1a, 1b joined together at their axial ends K.

Conventionally, when joining a pair of garter materials 1a and 1b to each other, first of all, each garter material 1a and 1b is joined.
Of the garter members 1a and 1b are joined to each other by welding the end portions K of the garter members 1a and 1b to each other, and then the joining plates 6 and 7 are welded to both side surfaces of the web 5 of the garter members 1a and 1b, respectively. Then, at the welded portions 8a and 8b, the upper flange 9 and the lower flange 4 of the gutter members 1a and 1b are welded to each other.

[0004]

However, in each garter member 1a, 1b, the lower flange 4 for the web 5 is to be solved.
Do not necessarily have the same mounting angle, and the mounting positions of the lower flange 4 with respect to the web 5 do not necessarily match. Therefore, in such a case, first, the webs 5 of the garter materials 1a and 1b are aligned with each other and joined by the joining plates 6 and 7, and
A step is generated at the joint portion of the lower flange 4 of 1b, thus causing a problem that the wheel 3 cannot roll smoothly on the lower flange 4.

[0005]

In order to solve the above-mentioned problems, according to the present invention, a pair of garter members each having a horizontally extending flange formed at the upper end and the lower end of a vertically extending web are provided. In a welded joint structure of garter materials that are welded to each other at their axial end portions, cuts that extend inward from the axial end faces of the garter materials that are butted against each other during welding and that communicate with each other when butted The notch is formed in each web of garter material, a common joining plate is fitted in both notches, and this plate is welded to the web of each garter material.

[0006]

The joining plate is welded to each web with the flanges formed at the lower end of each garter material web aligned with each other. Therefore, the flanges formed at the lower end of the web are always aligned.

[0007]

1 shows a pair of garter members 10a, 10b joined together at their axial ends K. As shown in FIG. These garter materials 10a and 10b have the same shape. As shown in FIGS. 1 and 2, each garter material 10a and 10b is integrally formed on a vertically extending web 11 and an upper end portion of the web 11. Upper flange 12
And a lower flange 13 formed integrally with the lower end of the web 11. Notches 14a and 14b having a U-shaped cross section are formed on the webs 11 of the garter members 10a and 10b and extend inward from the joint end surface K of the webs 11. These notches 14a and 14b are formed so that when the ends K of the garter members 10a and 10b are butted against each other for welding and joining, an opening 15 is formed which communicates with each other and has a rectangular shape. .

A rectangular joining plate 16 having substantially the same contour shape as the rectangular opening 15 is fitted in the notches 14a and 14b. As can be seen from FIG. 2, this joining plate 16 has a greater thickness than the web 11. When welding and joining, first of all, each gutter material 10
Axial end portions of a and 10b are butted against each other, and then a joining plate 16 is fitted into an opening 15 formed by each notch portion 14a and 14b. Then, the lower flange 13 of each gutter member 10a, 10b is accurately aligned. At this time, if the mounting angle or the mounting position of the lower flange 13 with respect to the web 11 in each garter 10a, 10b, or both of them are different from each other, the webs 11 of each garter 10a, 10b will not be aligned correctly. Next, the entire outer peripheral edge of the bonding plate 16 is 17,18.
As shown by (3), both garters 10a and 10b are welded and fixed on both side surfaces of the web 11. Therefore, at this time, each garter 10
The webs 11 of a and 10b may not be accurately aligned with each other, but the lower flanges 13 of the garters 10a and 10b are necessarily aligned with each other. Therefore, when the wheels 3 of the trolley 2 as shown in FIG. 4 roll on the lower flange 13, the wheels 3 can roll smoothly on the lower flange 13.

Next, as shown by 19 and 20, the upper flange 12 and the lower flange 13 of the garter members 10a and 10b are welded to each other. FIG.
2 and the web 1 in the vicinity of the welds 19 and 20 in FIG.
The semicircular openings 21 and 22 formed on the 1 are openings for inspecting the welded portions 19 and 20.

[0010]

[Effect of the Invention] When a pair of garter materials are welded and joined, the lower flanges of each garter material can be accurately aligned.

[Brief description of drawings]

FIG. 1 is a side view of a garter material according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a side view of a garter material that has been conventionally used.

4 is a sectional view taken along line IV-IV in FIG.

[Explanation of symbols]

 10a, 10b ... Garter material 11 ... Web 12, 13 ... Flange 14a, 14a ... Notch 16 ... Joining plate

Claims (1)

[Claims] 1. A welded joint of garter members, wherein a pair of garter members each having a flange extending in the horizontal direction formed at the upper end and the lower end of a vertically extending web are welded to each other at their axial ends. In the structure, notches that extend inward from the axial end faces of the garter materials that are butted against each other at the time of welding and communicate with each other when they are butted are formed in the webs of the garter materials, and are common to both notches. A welding and joining structure of garter materials, in which the joining plate of (1) is fitted and the plate is welded to the web of each garter material.