JPH06322995A - Field welding operation tent for steel pipe pile - Google Patents

Abstract

PURPOSE:To carry out welding work without interruptions from wind and rain in a construction site where steep pipe piles are connected by welding and driven into the ground. CONSTITUTION:A tent main body 1 which spreads around a steel pipe pile P in the shape of a skirt and a ring-shaped skeleton 3 which holds its expanded part are arranged to form a welding construction tent. The tent main body 1 is mainly composed of a waterproofing sheet which can be closed around the steel pipe pile P in its single turn. A belt 5 which is clapped with the steel pipe P, a droop covering curtain 7 for an expanded part of a skirt and a curtain 9 are connected to the steel pipe P one after another. When the skeleton 3 is mounted to the lower end of the covering curtain 7 with a string 17 after the steel pile P is clamped with the belt 5, the covering curtain 7 is equally pulled up over the whole circumference with the weight so that the skirt-like expansion may be held as if it were provided with a large number of frameworks.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention particularly avoids rainfall and snowfall when welding steel pipe piles for the purpose of preventing landslides driven into mountains or hillsides, or for the purpose of building foundation, on site. For work awnings used for.

[0002]

2. Description of the Related Art For example, in a landslide area, especially when there are roads and buildings below the piles, in order to prevent the risk of sediment collapse, piles are driven to a predetermined depth at a suitable position for preventing the collapse. . This is generally called a steel pipe pile.

A thick steel pipe is used for a steel pipe pile, but since one pipe is insufficient, it is usually a few pipes such that one pipe is first driven and then further pipes are added to add the steel pipe. The linking of books is driven in. Although electric welding is performed for this connection, there has conventionally been no working awning for this purpose.

As a field welding method for steel pipe piles, a hand welding method,
There are three types of semi-automatic welding and full-automatic welding, but the most widely used at present is the semi-automatic welding, which uses self-shielded arc welding. Also,
200V AC is generally used for the welding power source,
Many require a large current of about 350 to 480A.

[0005]

The quality of welding of steel pipe piles often depends not only on the skill of the welder but also on the climatic conditions. When rain or snow falls, the welding work is stopped.
This hindered work efficiency. Also, 10 m / sec
When the above-mentioned strong wind is blowing, the work is done by providing a screen to prevent the wind.

At the spot during welding, 1
Since a molten pool having a high temperature of about 000 ° C. is generated, when raindrops come into contact with the molten pool, not only welding defects are caused, but also a dangerous state in which a welding portion explodes is caused.

In view of the above circumstances, the present invention eliminates the need for interrupting the welding operation because it does not touch the spot being welded even if there is rain or snow, and it prevents wind. The purpose is to provide an awning for on-site welding work of steel pipe piles.

[0008]

In order to achieve the above object, an awning for field welding work of a steel pipe pile according to the present invention comprises an awning body which can be spread in a skirt shape around the steel pipe pile, and a ring which holds the spread. The awning body is mainly composed of a waterproof sheet that is closed around the steel pipe pile in a single turn. The spreading curtain and the curtain from the lower end of the curtain are successively connected, and fasteners that can be connected to each other for closing are attached to both ends, and an elastic core material is attached to the strip so that it can adhere to the steel pipe pile. It is characterized in that a mounting means for mounting and dismounting a marginal bone is provided at the lower end of the curtain.

[0009]

[Operation] Since the awning for on-site welding of steel pipe piles is configured as described above, the work procedure is as follows. After tentatively connecting, attach the awning body to the succeeding steel pipe pile and attach the rim bone to the awning to assemble.

When the awning body is attached, the awning body is turned to the steel pipe pile and both ends are closed with fasteners, and at the same time, the band portion is fastened to the steel pipe pile. Then, a fixed state that does not descend due to the tightening is obtained. Therefore, when the rim bone is attached, the curtain is pulled evenly to the periphery by the weight of the rim bone, so that the stable skirt-like spread shape is maintained. After the welding is completed, remove it by just following the reverse procedure.

[0011]

Embodiments of the present invention will now be described with reference to the drawings.

The tent T for on-site welding work of a steel pipe pile is composed of a combination of an awning body 1 mounted on the steel pipe pile P and a ring-shaped rim 3 to be assembled thereto.

The awning body 1 is made of a waterproof sheet such as resin sheet or tent cloth, and is a band portion 5 that is fastened to the steel pipe pile P.
A cover curtain 7 that spreads in a skirt shape from the lower end thereof and a hanging curtain 9 that descends from the periphery thereof are formed, and the periphery is end so that it can be attached to the steel pipe pile P in one turn.

The waterproof sheet having such a shape of the awning main body 1 has surface fasteners 11 which are mutually coupled to both ends in order to tighten the steel pipe pile P and maintain the skirt state.
13 are attached and each have two attachments to strengthen the bond. The surface fasteners 11, 1
The attachment of 3 may be omitted in the banner 9 as shown.

The band portion 5 is fastened to the steel pipe pile P by the fastening of the surface fasteners 11 and 13, whereby the attached state is maintained. However, this is the only steel pipe pile P
Since it is difficult to make close contact with and the rainwater may infiltrate between them, the elastic core materials 15 are attached to the band portion 5 in two upper and lower stages.

As the elastic core material 15, a band-shaped member having elasticity such as urethane foam resin or rubber is used. In addition, both ends 1
5a and 15b are projected from the end of the band 5. By doing so, it is easy to pull and tighten both ends 15a and 15b of the elastic core material 15. Further, although the both end portions 15a and 15b are overlapped with each other, the lower end portion 15a is crushed, so that the elastic core material 15 closely adheres to the steel pipe pile P even at the end thereof without a gap.

In order to improve such adhesion at the overlapping portion of the elastic core member 15, it is desirable to attach the elastic core member 15 inside the band portion 5 as shown in the drawing. However, it is also possible to improve the adhesion even if it is attached to the outside.
For example, the elastic core material 15 is shortened so that both ends thereof are not overlapped. Alternatively, the insertion portion of the elastic core material may be formed in the shape of a bag along the band portion 5 and the elastic core material may be covered therewith.

At the lower end of the covering screen 7, strings 17 are attached to the outside at equal intervals as a means for detachably attaching the rim bone 3. Also, a string 19 is also attached to the lower end of the hanging curtain 9.
Is attached. A seat 4 for preventing wind and rain from being blown in can be attached by the string 19 below this. Further, when the hanging curtain 9 is formed so as to hang down for a long time, the hanging curtain 9 can also be used for attaching another edge 3 to the lower end so that the hanging curtain 9 is not agitated by the wind. Then, the blowing of wind can be effectively prevented.

The rim bone 3 is formed of metal or plastic in a ring shape, and if it is heavy like iron,
The weight stabilizes the opening of the curtain 9. Further, the ring shape may be, for example, a two-piece assembly type.

As for the work procedure, when the preceding steel pipe pile P is driven, the marginal bone 3 is inserted in advance in the steel pipe pile P, and then the succeeding steel pipe pile P is temporarily connected. For this temporary fixing, an iron ring 21 is welded in advance by fitting it on the end of one steel pipe pile P. When the rim bone 3 is of the assembly type as described above, it is not necessary to put it in the preceding steel pipe pile P in advance.

After the subsequent steel pipe pile P is temporarily fixed, the awning body 1 is turned around the steel pipe pile P, both ends are closed by the surface fasteners 11 and 13, and the band portion 5 is tightened. Then, the strip portion 5 is fixed to the steel pipe pile P, and the covering curtain 7 and the hanging curtain 9 hang down around the steel pipe pile P. Therefore, the rim bone 3 is lifted to the outside of the steel pipe pile P and the edge is held by the string 17 while holding the position. The bone 3 is tied up.

In order to hold the edge frame 3, a support table for the edge frame 3 is assembled on the work table 23. Then, it is easy to tie the string 17. Then, when the support frame is removed, the open state of the cover 7 is held by the weight of the edge bone 3. Further, since the steel pipe pile P is tightly adhered to the band 5 so that rainwater does not intrude between them, even if there is rainfall or snowfall, it does not touch the welding spot.

It should be noted that, in order to strengthen the welding by fleshing out, the lower end of the steel pipe pile P is easily fleshed out and is cut out so as to be inclined all around the outside. Moreover, when welding is completed and the awning T is removed, the driving operation of the subsequent steel pipe pile P is started,
If necessary, steel pipe piles are connected, and finally steel pipe piles P
Concrete is driven in by arranging with a pipe.

[0024]

Since the awning for welding a steel pipe pile in the field according to the present invention is as described above, it exhibits the following excellent effects.

By assembling, the entire periphery of the welded portion of the steel pipe pile is covered, and since the elastic core material is closely attached to the steel pipe pile, rainwater is prevented from entering from the tightened portion. There is no danger of rain or snow coming into contact with the hot spots, it is not necessary to interrupt the welding work even if there is rain or snow, and there is no possibility of welding failure due to contact with water.

Since the awning body can be easily assembled by tightening it to the subsequent steel pipe pile and then attaching the rim to it, work efficiency can be improved in response to sudden changes in the climate, and the awning body and Since it is separate from the curb and is assembled at the same time as mounting to the steel pipe pile, it can be transported and stored compactly. Further, it is extremely convenient for handling such as mounting and dismounting work.

The awning body has no skeleton, and not only is it lightweight, but the rim bone to be assembled to it has a simple ring shape, and there are many skeletons just by mounting it. It can be used not only for rain and snow, but also for preventing relatively strong winds because the spread of the shape is kept stable and the curtains hang down around it.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an exploded view.

FIG. 2 is a vertical cross-sectional explanatory view showing a state of use.

[Explanation of symbols]

 P steel pipe pile T tent for field welding work of steel pipe pile 1 awning body 3 rim bone 5 band 7 cover curtain 9 hanging curtain 11, 13 fastener 15 elastic core material 17 cord as a detachable attachment means for rim bone

Claims (1)

[Claims] 1. A combination of an awning main body (1) which is spread in a skirt shape around a steel pipe pile (P) and a ring-shaped rim bone (3) which holds the spread, of which the awning main body is included. As for (1), mainly a waterproof sheet that is closed around the steel pipe pile (P) around once, and a band portion (5) to be fastened to the steel pipe pile (P), and a cover curtain extending from the lower end to a skirt shape. (7) and a curtain (9) from its bottom edge
Are sequentially connected, fasteners (11, 13) that can be connected to each other for closing are attached to both ends, and an elastic core material is attached to the strip (5) so as to be closely attached to the steel pipe pile (P). (15) is attached, and the edge bone (3) is attached to the lower end of the curtain (7).
An awning for on-site welding of steel pipe piles, which is provided with detachable attachment means (17).