JPH0654468U - Wind shield for welding - Google Patents

Abstract

(57) [Abstract] [Purpose] Reinforcing steel bars (round bar, deformed round bar) by arc welding while blowing carbon dioxide gas can be performed even in places such as outdoors where there is a wind effect. Of equipment to do so. [Structure] A box-shaped cover body 4 having an operation port 2 on one side and an enclosed space 3 on the inside is provided, and the cover body 4 is divided into two, and these cover members 6, 7, 6, 7 are provided. Forming urging springs 8 and 8 for pivotally rotatably supporting each other and holding the shape of the cover body 4 in the pivotally attached portions 6a and 6a,
With the welding portion of the rod-shaped material to be welded being positioned in the inner surrounding space 3 at the facing portion on the counter operation port side of each cover member 6, 7, 6, 7, the cover body 4 is used as the material to be welded. A wind shield cover 1 for welding, in which mounting portions 5 and 5 to be mounted against each other are formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wind shield for welding that enables easy and complete addition of reinforcing bars, for example, when constructing a reinforced concrete structure.

[0002]

[Prior art]

 Since the reinforcing bars (round bars and deformed round bars) used for the above-mentioned reinforced concrete structures are set to a fixed length, it may be necessary to replenish them in order to use them. This work is performed by a pressure welding method in which the mutual end portions of the reinforcing bars are melted and these are pressed together to bond them.

However, in the case of performing pressure welding, it is necessary to bring a cylinder for pressure-welding a reinforcing bar material and various equipment for moving the same to the site, which is a large scale and costly.

Therefore, it is conceivable that an inert gas such as carbon dioxide may be sprayed on to supplement the arc by performing arc welding while preventing contact with nitrogen. However, since the work place is outdoors, carbon dioxide is used. Even if it is sprayed, it may be scattered by the wind, and there is the problem that it is not possible to perform perfect welding with sufficient strength.

[0005]

[Problems to be solved by the device]

 Then, this invention makes it a subject to provide the wind shield for welding which is a tool for performing work easily and completely.

[0006]

[Means for Solving the Problems]

 A means for solving the above-mentioned problems will be described with reference to FIG. 1 showing an embodiment. In the configuration of the first invention, a cover body 4 having an operation port 2 on one side and an enclosed space 3 inside is provided. At the same time, the cover body 4 is provided with attachment parts 5 and 5 for attaching to the material to be welded in a state where the welded portion of the material to be welded is located in the surrounding space 3 inside the cover body 4. The wind shield 1 is featured, and a wind shield having an operation window may be detachably or integrally provided on the operation side of the cover body.

Further, in the configuration of the second invention, the operation port 2 is opened on one side and the cover body 4 having the enclosed space 3 is provided on the inner side, and the cover body 4 is divided into two parts. 7, 6 and 7 are rotatably pivotally attached to each other, and urging means 8 and 8 for holding the shape of the cover body 4 are formed, and the cover members 6, 7, Welding in which mounting portions 5 and 5 for attaching the cover body 4 to the material to be welded are formed at the opposing portions of 6 and 7 with the welded portion of the rod-shaped material to be welded being located in the inner surrounding space 3. The windshield cover 1 for a vehicle is provided, and a windshield plate having an operation window may be detachably or integrally provided on the operation port side of the cover body.

[0008]

[Action]

 That is, according to the configuration of the first invention described above, when welding is performed, after the material to be welded is placed in a posture for performing welding, the cover body is attached to the material to be welded via the attachment portion, and the material to be welded is attached. Surround the welded part of and shield the wind. Then, the material to be welded located in the inner enclosed space is welded from the operation port on one side.

In addition, when the wind is strong or the direction of the wind cannot be determined, the opening area of the operation port can be reduced to that of the operation window by the wind shield plate on the operation port side to further prevent wind. To do so.

According to the configuration of the second invention, when performing welding, after disposing the material to be welded in a position to perform welding, each cover member of the cover body is rotated against the biasing force, The urging force attaches the cover body to the material to be welded through the attachment portion, and surrounds the welded portion of the material to be welded to shield the wind. Then, the material to be welded located in the enclosed space inside is welded from the operation port on one side.

In addition, when the wind is strong or the direction of the wind cannot be determined, the opening area of the operation port can be reduced to that of the operation window by the wind shield plate on the operation port side to further prevent wind. To do so.

[0012]

[Effect of device]

 As a result of the above, according to the first aspect of the present invention, the welded portion of the material to be welded is surrounded by the cover body so that wind can be shielded, so that carbon dioxide can be prevented from scattering, and simple equipment has sufficient strength. Welding can be done.

Further, since the wind shield for reducing the opening area is provided on the operation port side, the wind can be sufficiently shielded even during strong winds or when the wind direction is unstable, and good welding can be performed.

According to the second invention, in addition to the effect of the first invention described above, the cover body is composed of two cover members pivotally attached to each other, and the urging means is formed on the cover member. Since the mounting part for mounting on the material to be welded is formed by utilizing it, the effect of being able to easily perform the mounting and dismounting is not only by rotating the two cover members against the biasing force. Have.

Moreover, since the mounting portion is formed at the facing portion of each cover member that can be contacted and separated by rotation, that is, since the mounting portion performs the sandwiching action, the material to be welded is a reinforcing bar and its joint is When adding, the reinforcing material is positively held rather than being attached to the material to be welded, so that the material to be welded is stable and the work can be performed more easily.

[0016]

【Example】

 An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing a welding wind shield cover 1 used when arc welding is used to reinforce steel bars such as round bar steel and deformed round bar steel. First, the structure will be described. As shown in this figure, a welding wind shield cover 1 is provided with a box-shaped cover body 4 having one side as an operation port 2 and an enclosed space 3 inside, and the counter operation port 2 of the cover body 4 is provided. Two mounting portions 5 and 5 are formed on the outer surface on the side.

The above-mentioned cover body 4 includes two substantially U-shaped first cover members 6 and 6, and second cover members 7 and 7 fixed to the side opposite to the operation port 2 of the first cover members 6 and 6. Both ends of the above-mentioned first cover members 6 and 6 are pivotally attached to each other so as to be rotatable with respect to each other, and the two pivotally attached portions 6a and 6a are provided with the cover body 4 described above. In order to maintain the shape, a biasing spring 8 that biases the counter opening 2 side is interposed.

Also, two sandwiching pieces 5a ... One for forming the above-mentioned mounting portions 5, 5 are provided at the opposite edges of the second cover members 7, 7 on both sides except the intermediate portion, respectively. As shown in FIG. 2, the second cover members 7, 7 sandwiched between the sandwiching pieces 5a ... Form a bent piece 7a that is bent outward and formed in the middle of the second cover member 7, 7. Inside the bent piece 7a, a Bakelite cover plate 9 to which no ladle generated during welding adheres is detachably attached so that the reinforcing bar material is taken into the surrounding space 3 described above.

A plurality of types of the above-mentioned second cover members 7, 7 are prepared according to the size of the sandwiching pieces 5a, ..., Which can be selected according to the thickness of the reinforcing bar. Further, the second cover members 7, 7 are attached to the first cover members 6, 6 by appropriate means such as welding or screw fixing.

Further, when the cover plate 9 is attached to the bent piece 7a, the protrusion 9a formed on the outer surface of the cover plates 9 and 9 is formed with a groove (not shown) having an appropriate shape so as to have elasticity. It is performed by inserting it into the mounting hole 7b provided in the above.

Next, the operation and effect will be described. In order to connect the reinforcing bars, first, as shown in Fig. 3, connect the reinforcing bars A and A to be connected with a holding bracket having a C-shaped cross section at an appropriate interval such as 10 mm. Then, the attachment portions 5 and 5 of the welding wind shield cover 1 are fixed at upper and lower positions sandwiching the welded portion to which the holding metal fitting B is attached, and the above-mentioned welded portion is positioned in the enclosed space 3 inside the cover body 4. Let In addition, the welding wind shield cover 1 is fixed by holding the ends of the first cover members 6 and 6 against each other against the urging force of the urging spring 8 to form the mounting portions 5 and 5. The holding pieces 5a, ... Are separated from each other by a predetermined positional relationship, and the reinforcing bars A, A are held by the holding pieces 5a ,.

Then, since the welded portions of the reinforcing bars A and A are surrounded by the cover body 4 and are shielded from the wind, even if arc welding is performed while blowing carbon dioxide gas, carbon dioxide gas scatters. It does not get lost, and it is easy to perform complete welding with sufficient strength even when working outdoors.

Moreover, since the cover body 4 can be attached and detached by simply rotating the two cover members 6, 6, 7, and 7 against the urging force, the cover body 4 can be easily mounted. Further, since the mounting portions 5 and 5 not only simply mount but also act to sandwich and positively hold the reinforcing bars A and A, the reinforcing bars A and A are stable and the work can be performed more easily. .

The above is one embodiment of the present invention, and other structures may be adopted. For example, as shown in FIG. 4, although the mounting portion is formed on the outer surface on the side opposite to the operation port of the cover body in the above embodiment, it may be formed on the inner surface on the side opposite to the operation port.

The cover body 11 is composed of two cover members 12 and 12, and the cover members 12 and 12 are made of a reinforcing bar material at opposite sides of the cover members 12 and 12 except for the intermediate portion of the surface on the side opposite to the operation port. Grooves 11a, 11a that allow holding are formed, and planar closing plates 12a, 12a are integrally formed in the middle portion. The holding pieces 13a forming the mounting portions 13, 13 are arranged two by two on both sides of the closing plates 12a, 12a on the inner surface of each cover member 11 on the side opposite to the operation port. Even the holding pieces 13a ... Are selectively attached depending on the thickness of the reinforcing bar material. In such a wind shield for welding, since the blocking plate exists at the portion corresponding to the welded portion of the reinforcing bar, the wind can be more completely shielded.

Further, the two cover members are not pivotally attached as in the above-described respective embodiments, but, for example, the surface on the side opposite to the operation port is connected by a hinge having a biasing means, and the upper and lower ends of each cover member are connected. The surface may be provided with a mounting hole for mounting to the reinforcing bar.

Further, as shown in FIG. 5, attachment to the materials to be welded B, B may be performed by a magnet.

The welding wind shield cover 21 shown in this embodiment is suitable for use when, for example, an iron plate is added when constructing a pillar, and the cover body 22 has a square shape. It is formed in a tubular shape, and one opening surface serves as an operation port 23, and mounting plates 24, 24 are continuously provided on both upper and lower sides of the other opening surface. A recess 24a is formed on the surface of the attachment plates 24, 24 on the side opposite to the operation port, and the magnet 25 is housed in the recess 24a.

A positioning protrusion 22a for positioning is formed in a bulge at the vertical center position on both side surfaces of the cover body 22, and a string is attached to the upper edge side of the one mounting plate 24 described above. Insertion holes 24b, 24b for insertion are formed. For this purpose, for example, when an angle member is added to an iron plate, a string having a hook at the front end for engaging with the upper edge of the angle member is attached and used.

Further, like the wind shield covers 31 and 41 for welding shown in FIGS. 6 and 7, wind shield plates 34 and 44 may be provided on the side of the operation ports 33 and 43 of the cover bodies 32 and 42. The welding wind shield cover 31 shown in FIG. 6 has one side face as the operation port 33 and has an enclosed space 35 inside, and has a surrounding space 35 on the side opposite to the operation port side, as in the case shown in FIGS. 1 to 3. A wind shield 34 is pivotally attached to a cover body 32 having two mounting portions 36, 36.

The wind shield 34 is attached to one of the two first cover members 32 a and 32 b forming the cover body 32 so as to be openable and closable via a pivotal attachment portion 37. An operation window 38 having an appropriate length is formed from an intermediate position of the side 34a on the attachment portion side to the pivotal attachment portion side 34b. The size of the operation window 38 is set so small that it does not interfere with the welding work, and the portion of the wind shield plate 34 other than the operation window 38 shields air, so that the air in the enclosed space 35 is not necessary. I try to prevent such a flow.

Two holding pieces 39, 39 for holding the closed state of the wind shield 34 by frictional resistance are provided opposite to the first cover member 32b on the side opposite to the pivotally connecting portion 37. These holding pieces 39, 39 have a predetermined length so that the wind shield plate 34 can be kept closed regardless of the angle between the two first cover members 32a, 32b.

In the welding wind shield cover 31 configured as described above, the wind shield plate 34 having the operation window 38 small enough for welding is pivotally mounted, so that when the wind is strong or the wind direction is unfavorable. By closing the valve when it is stable, it is possible to further shield the wind and expect better welding. Since the wind shield plate 34 can be opened and closed, the interior space 35 can be easily cleaned by opening the wind shield plate 34.

Similar to that shown in FIG. 5, the welding wind shield 41 shown in FIG. 7 has mounting plates 45, 45 as mounting portions connected to the opening surface on the side opposite to the operation port of the rectangular tubular body. A wind shield 44 is integrally attached to the installed cover body 42.

The structure of the wind shield 44 is the same as that of FIG. 6 described above except that there is no pivot portion, and the structure of the cover body 42 is the same as that shown in FIG. , Their explanations are omitted. In the figure, 46 is an enclosed space and 47 is an operation window. Even with the welding wind shield cover 41 configured in this manner, good welding can be expected, as in the case of the welding wind shield cover 31 shown in FIG.

[Brief description of drawings]

FIG. 1 is a perspective view showing a welding wind shield.

FIG. 2 is a sectional view showing a wind shield for welding.

FIG. 3 is a partially cutaway perspective view showing an operating state.

FIG. 4 is a perspective view showing another embodiment.

FIG. 5 is a partially cutaway perspective view showing another embodiment.

FIG. 6 is a perspective view showing another embodiment.

FIG. 7 is a perspective view showing another embodiment.

[Explanation of symbols]

 1, 21, 31, 41 ... Wind shield for welding 2, 23, 33, 43 ... Operation port 3, 35, 46 ... Enclosing space 4, 11, 22, 32, 42 ... Cover body 5, 13, 36 ... Installation Part 6, 32a, 32b ... 1st cover member 7 ... 2nd cover member 8 ... Energizing means 12 ... Cover member 24, 45 ... Mounting plate (mounting part) 25 ... Magnet 34, 44 ... Wind shield 38, 47 ... Operation window

Claims (3)

[Scope of utility model registration request] 1. A cover body having an operation space on one side and an enclosed space inside is provided, and a welded portion of a material to be welded is located on the cover body in the enclosed space inside the cover body. A welding wind shield cover having a mounting portion to be mounted on the material to be welded. 2. A cover body having an operation opening on one side and an enclosed space inside is provided, the cover body is divided into two, and the respective cover members are rotatably pivotably attached to each other. An urging means for holding the shape of the cover body is formed, and at the facing portions of the respective cover members which can be brought into contact with and separated from each other by the above-mentioned rotation,
A windbreak cover for welding, in which a welding portion of a rod-shaped material to be welded is positioned in an inner surrounding space to form a mounting portion for attaching a cover body to the material to be welded. 3. The wind shield cover for welding according to claim 1 or 2, wherein a wind shield plate having an operation window is provided on the operation port side of the cover body.