JP3040433U - Parts for welded joints - Google Patents

Abstract

(57) [Abstract] [Problem] To easily determine a route interval when butt-welding reinforcing bars. SOLUTION: When joining two welded bars 5 and 5 to each other for welding, the joint member 1 is put on the outer side of the butted portion and welded together with the rebars 5, 5. Is formed in an arc shape that makes a substantially half circumference of the outer periphery of the reinforcing bar, and a notch 3 is formed in a substantially central portion of a side edge along the direction of the reinforcing bar with a width corresponding to the root interval.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention enables the reinforcing bars to face each other at a predetermined route interval when butt-welding the reinforcing bars, and also prevents burn-through of the weld metal during welding to ensure reliable spacing between the routes. The present invention relates to a welding joint member that can be filled with weld metal and can form a welded joint having high strength reliability.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, a welding joint cylinder has been devised in which an opening for welding is opened in a substantially central portion of a peripheral surface of a cylinder, and a stopper for determining a route interval is projected on an inner surface (JP-A-62-62). -4906). This is done by inserting the rebar from both ends of the cylinder, applying the tip of the rebar to the stopper to secure the route interval, inserting the welding wire from the opening, and using carbon dioxide shield welding to set the route interval by welding metal. It is buried and connects the reinforcing bars firmly.

The stopper for determining the root interval of the welding cylinder is melted at the root at the time of welding, and the stopper itself floats on the surface of the weld metal without being completely melted, and if solidified in this state, it can be used for welding inspection. It becomes a problem. The present invention discloses a member for a welded joint that can solve the above problems.

[0004]

[Means for solving the problem]

 The member (1) for welded joints according to claim 1 of the present invention is formed in an arc shape which substantially circumscribes the outer circumference of the reinforcing bars (5) (5), and has a root interval at a substantially central portion of a side edge along the direction of the reinforcing bars. A notch (3) is opened in the corresponding width.

The member (1) for a welded joint according to claim 2 of the present invention is formed in an arc shape which substantially circumscribes the outer circumference of the reinforcing bar (5) (5), and is formed at a substantially central portion of the side edge along the direction of the reinforcing bar. Two notches (3) (3) are opened next to each other.

[0006]

[Action and effect]

 Since the member (1) for welded joints of the present invention is formed in an arc shape that half-circulates the outer circumference of the reinforcing bars (5), (5), it can be covered from the outside by straddling the abutting portion of the reinforcing bars. , Workability is good.

Further, in the invention of claim 1, the root interval can be determined in accordance with the width of the notch (3) of the member (1) for welded joints, without depending on the feeling of the operator. , You can set the proper route interval. Unlike the stopper for the root gap in the conventional welding cylinder, there is no protrusion to the inside of the joint member (1), so the root of the stopper is melted during welding and the stopper itself does not completely melt. Therefore, there is no inconvenience of solidifying while being floated on the surface of the weld metal.

According to the second aspect of the invention, there is an advantage that a plurality of types of route intervals can be set in accordance with the width between the notches (3) and (3) and the width of the notch itself.

[0009]

【Example】

 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described based on the embodiments shown in the drawings, but the embodiments are for explaining the present invention, and are understood so as to limit or reduce the scope of utility model registration claims. Should not be.

The member (1) for welded joints used in the present invention is formed by bending a substantially rectangular plate having a thickness of 3.2 to 6 mm and a length of 25 to 60 mm into a substantially half arc in the width direction. The radius of curvature is slightly larger than 1/2 of the nominal diameter of the reinforcing bar to be welded. As shown by the chain double-dashed line in FIG. 3, both ends in the width direction of the welded joint member (1) may extend slightly parallel to each other beyond the diameter line of the member (1).

The welded joint member (1) is provided with a groove (2) extending along the entire length in the circumferential direction on the inner surface of the substantially central portion in the longitudinal direction, and a notch (3) is formed at one end of the groove (2). doing. In addition, a through hole (4) for welding inspection is provided at the center and both ends of the groove (2) in the longitudinal direction. The through hole (4) has a diameter of 2 to 3 mm and is small enough to prevent the weld metal from flowing out during welding.

The groove (2), the notch (3), and the through hole (4) are processed by a press machine when the welding joint member (1) is a flat plate, and then bent. The welding joint member (1) shown in FIG. 1 is completed.

However, as shown in FIG. 2, the two reinforcing bars to be welded are opposed to each other on the inner surface of the welded joint member (1). At this time, the interval between the reinforcing bars is set according to the width of the notch (3), and the welding joint member (1) is temporarily attached to the reinforcing bar by welding.

Next, carbon dioxide shield semi-automatic welding is performed on the interval between the reinforcing bars, that is, the root interval, and the root interval is filled with weld metal. Welding is performed by stacking multiple layers of weld metal from the bottom side of the member for welded joint (1), but the welding defect that is likely to occur in the lowermost layer is located in the groove (2) of the member for welded joint (1). Therefore, the region where the end faces of the reinforcing bars face each other becomes a good welded part as a whole, and the welding strength and reliability are improved.

After the welding is completed, the filling state of the weld metal on the bottom side of the route interval can be visually observed from the through hole (4), and it does not require a large-scale device such as nondestructive inspection or labor, and the welded joint can be easily welded. An inspection can be performed.

FIG. 5 shows another embodiment of the welded joint member (1), in which two notches (3) and (3) are formed adjacent to each other near the center of one side edge. There is. The width between the notches (3) and (3) corresponds to the root interval, and the width of both notches (3) is the same as, wider than, or narrower than the root interval. The width of the groove (2) corresponds between the outer ends of the notches (3).

In the case of FIG. 5, two types of route intervals can be selected depending on whether the distance between the reinforcing bars corresponds to the width between the notches (3) and (3) or the width of the notch (3) itself. . If the widths of the two notches (3) and (3) are different from each other, three types of route intervals can be selected.

6 and 7 show another embodiment of the welded joint member (1) in which the groove (2) is omitted.

As described above, since the welded joint member (1) of the present invention is formed in the shape of an arc that makes about 1/2 circumference of the outer circumference of the reinforcing bar, it does not straddle the butt portion of the reinforced reinforcing bars. Therefore, it can be covered from the outside and workability is good.

Further, the root interval can be determined in accordance with the width of the notch (3) of the welded joint member (1) or the width between the notches (3), depending on the feeling of the operator. It is possible to secure proper route intervals.

[Brief description of the drawings]

FIG. 1 is a perspective view of a welded joint member of a first embodiment.

FIG. 2 is an explanatory diagram for determining a route interval.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view of a welded joint portion.

FIG. 5 is a perspective view of the second embodiment.

FIG. 6 is a perspective view of another embodiment in which grooves and holes are omitted in the first embodiment.

FIG. 7 is a perspective view of another embodiment in which grooves and holes are omitted in the second embodiment.

[Explanation of symbols]

 (1) Welded joint members (2) Grooves (3) Notches (4) Holes

Claims (3)

[Utility model registration claims] 1. A joint member (1) for covering two outer reinforcing bars (5), (5) on the outer side of the butted portion and welding together with the reinforcing bars (5), (5) when welding them together. Yes, the joint member
(1) is a member for a welded joint, which is formed in an arc shape that substantially circumscribes the outer circumference of a reinforcing bar and has a notch (3) formed in a substantially central portion of a side edge along the direction of the reinforcing bar with a width corresponding to a root interval. . 2. A joint member (1) for welding two rebars (5) (5) together by butt welding, covering the outer side of the butted portion and welding together with the rebars (5) (5). Yes, the joint member
(1) is a member for welded joints, which is formed in an arc shape that substantially circumscribes the outer circumference of a reinforcing bar, and two notches (3) and (3) are opened side by side at the substantially central portion of the side edge along the direction of the reinforcing bar. 3. The welded joint according to claim 1 or 2, wherein a through hole (4) having a small diameter is formed in the groove-corresponding portion of the joint member (1) so that the weld metal does not flow out during welding. Element.